Coil panel, and cooking device

Abstract

The present application provides a coil disk and a cooking device, relating to the technical field of cooking appliances. The coil disk includes: a heat insulation component; and a winding provided at the heat insulation component, where the winding is in a strip shape and is spirally wound on the heat insulation component to form a coil, and the energized coil is capable of generating an electromagnetic field and thermal radiation. The coil disk defined in the present application has both electromagnetic heating capability and thermal-radiation heating capability, such that, without changing the original hardware structure of an induction-heating cooking appliance, the induction-heating cooking appliance can heat a non-metal cooking utensil, thereby improving the versatility of the induction-heating cooking appliance and achieving the technical effects of optimizing the structure of the coil disk, broadening the applicable range of the coil disk, improving the practicability of the coil disk, and reducing the production cost of the coil disk.

Description

[0001] The present application claims priority to Chinese Patent Application No. 202311614489.7, filed on November 29, 2023, Chinese Patent Application No. 202420631685.9, filed on March 29, 2024, Chinese Patent Application No. 202420631876.5, filed on March 29, 2024, Chinese Patent Application No. 202420631791.7, filed on March 29, 2024, and Chinese Patent Application No. 202421241772.X, filed on May 31, 2024. The entire contents of the above applications are incorporated herein by reference.TECHNICAL FIELD

[0002] The present application relates to the technical field of cooking devices, and in particular, to a coil disk and a cooking device.BACKGROUND

[0003] In the related art, induction heating appliances such as induction cookers use flameless heating and feature high heating speed and high safety. However, induction heating appliances have poor compatibility with cookware materials and shapes. For example, relatively good heating power and heating effects can be achieved for metal cookware with high magnetic permeability, while cookware with low magnetic permeability, such as non-metal cookware, cannot be heated.

[0004] To solve the above problem, related technologies have proposed hybrid heating, namely, additionally providing a resistance-type electric heating wire on the basis of the original induction coil, so that the electric heating wire generates heat when induction heating cannot be used. However, such products require an additional electric heating wire coil, resulting in relatively high cost. Therefore, how to overcome the above technical defects has become an urgent technical problem to be solved.SUMMARY

[0005] The present application is intended to solve at least one of the technical problems existing in the related art or related technologies.

[0006] To this end, a first aspect of the present application provides a coil disk.

[0007] A second aspect of the present application provides a cooking device.

[0008] In view of this, the first aspect of the present application provides a coil disk, comprising: a heat insulation component; a winding provided at the heat insulation component, where the winding is strip-shaped, the winding is spirally wound on the heat insulation component to form a coil, the coil, when energized, is capable of generating an electromagnetic field and thermal radiation.

[0009] The present application defines a coil disk with both electromagnetic heating and thermal radiation heating functions. The coil disk comprises a heat insulation component and a winding, and the winding is spirally wound around the heat insulation component. On the one hand, the heat insulation component provides positioning and support for the winding; on the other hand, the heat insulation component has excellent heat insulation performance and can prevent the heat transferred from the winding from diffusing to the outside of the heat insulation component.

[0010] Based on this, the winding is in the shape of a strip, and the strip winding is spirally wound on the heat insulation component to form a spiral coil on the heat insulation component. When the spiral coil is energized, it can generate an electromagnetic field above it. At the same time, due to the existence of a certain internal resistance of the coil, the energized coil can also generate thermal radiation.

[0011] The intensity of the electromagnetic field and thermal radiation generated by the coil can be distributed by changing the frequency of the power supply current to the coil. Specifically, when a high-frequency current is passed through the coil, the coil not only generates an electromagnetic field, but also generates heat due to its own impedance. Specifically, as the frequency of the alternating current flowing through the coil increases, the coil's impedance also increases. As the coil's impedance increases, the heat generated when the current passes through the coil also increases, thus enabling the coil to generate sufficient heat. This heat is then transferred to the cooking appliance to heat it.

[0012] During operation, if a magnetic cooking appliance is placed above the coil, the appliance will resonate in the electromagnetic field and generate eddy currents. Under the influence of the eddy currents, the appliance will gradually heat up, allowing food to be cooked through the high temperature. At the same time, the heat radiation generated by the coil can also provide auxiliary heating to the appliance, thereby increasing the heating power.

[0013] If a non-magnetic cooking appliance is placed above the coil, although the appliance cannot generate eddy currents through resonance in the electromagnetic field, the thermal radiation generated by the coil can directly heat the appliance, thus cooking the food through the high temperature of the appliance. Furthermore, because the coil generates a large amount of thermal radiation, the actual heating effect of the coil on the appliance will not be affected by the movement of the appliance when the user tosses the food in the pan, thereby simulating the effect of open flame cooking.

[0014] Therefore, the coil specified in the present application possesses both electromagnetic heating and thermal radiation heating capabilities. When the cooking appliance is a metal appliance or other cooking appliance with high magnetic permeability, it heats up by generating eddy currents within the appliance through traditional induction heating. When the cooking appliance is a non-metallic appliance or other cooking appliance without high magnetic permeability, a higher oscillation frequency is used to increase the coil's impedance based on the skin effect. This increased impedance heats the coil, which then heats the cooking appliance. Thus, without altering the original hardware structure of the induction heating cooking appliance, it enables the heating of non-metallic appliances, improving its versatility and solving the high-cost technical problem in the related art. This achieves the technical effects of optimizing the coil structure, broadening its application range, improving its practicality, and reducing its production cost.

[0015] By setting the windings to a strip shape, the contact area between the windings and the air can be increased, thereby enhancing the thermal radiation heating capability of the coil while retaining the electromagnetic heating capability.

[0016] Based on this, the wound winding, after processing, takes on a spiral shape. During the assembly of the coil, the winding is fixed by connecting the heat insulation component and a portion of the winding through a connection mechanism. Compared to enameled wire winding, the processed spiral winding does not require support from a spiral bracket; it can maintain its spiral shape on its own, requiring only a few dispersed contact points for fixation. Therefore, by selecting a processed spiral winding, the contact area between the winding and the heat insulation component can be reduced, thereby decreasing the heat transfer rate between them and ultimately lowering the temperature of the heat insulation component during operation.

[0017] Specifically, the electromagnetic heating capability and thermal radiation heating capability of the coil can be distributed by adjusting the frequency of the driving current to form a variety of different heating modes.

[0018] Specifically, the winding are made of a high-temperature-resistant metal material, and the winding is required to withstand at least 600°C.

[0019] Specifically, the material of the heat insulation component can be selected as white carbon black.

[0020] In addition, the coil disk provided in the present application may also have the following additional technical features.

[0021] In some technical solutions of the present application, the winding comprises: a first winding, where the first winding has a first thickness in the axial direction of the coil and a first width in the radial direction of the coil; the first width is greater than the first thickness; the ratio of the first width to the first thickness is greater than or equal to 2.

[0022] In some technical solutions of the present application, the winding further comprises: a second winding, where the second winding has a second thickness in the axial direction of the coil and a second width in the radial direction of the coil; the second thickness is greater than the second width; and the ratio of the second thickness to the second width is greater than or equal to 2.

[0023] In some technical solutions of the present application, a cross-sectional shape of the winding comprises: a rectangle, a trapezoid, a parallelogram, or an ellipse.

[0024] In some technical solutions of the present application, the coil comprises a plurality of layers in the radial direction, and the plurality of layers are circular or elliptical.

[0025] In some technical solutions of the present application, the coil comprises a plurality of layers in the radial direction, and the plurality of layers are polygonal.

[0026] In some technical solutions of the present application, the winding is a metal winding; the melting point of the metal winding is greater than or equal to 600°C.

[0027] In some technical solutions of the present application, the coil disk further comprises: a support component connected to the heat insulation component; and a magnetic component provided between the support component and the heat insulation component.

[0028] In some technical solutions of the present application, the heat insulation component comprises: a first heat insulation component, where a coil is provided on a first side of the first heat insulation component, and a magnetic component is provided on a second side of the first heat insulation component away from the coil; a second heat insulation component, at least partially located between the first heat insulation component and the magnetic component, where the first heat insulation component and the second heat insulation component are made of different materials; the first side of the support component comprises an accommodation groove, the coil and the first heat insulation component are provided in the accommodation groove, and the magnetic component is provided on the second side of the support component.

[0029] In some technical solutions of the present application, the second heat insulation component is located between the first heat insulation component and the magnetic component; the second heat insulation component is provided between the first heat insulation component and the support component.

[0030] In some technical solutions of the present application, the second heat insulation component wraps the magnetic component.

[0031] In some technical solutions of the present application, the thickness of the first heat insulation component is greater than or equal to 4 mm and less than or equal to 9 mm.

[0032] In some technical solutions of the present application, the first heat insulation component comprises a slot, and the coil is partially inserted into the slot; a depth of the slot is greater than or equal to 3 mm and less than or equal to 4mm.

[0033] In some technical solutions of the present application, between the first heat insulation component and the magnetic component, a thickness of the second heat insulation component is greater than or equal to 1 mm and less than or equal to 5 mm.

[0034] In some technical solutions of the present application, the first side of the first heat insulation component comprises a rib, and the rib and the coil are arranged in a staggered manner.

[0035] In some technical solutions of the present application, a center of the coil comprises an avoidance region; a protrusion is provided on a side of the magnetic component facing the heat insulation component.

[0036] In some technical solutions of the present application, the protrusion is annular; the protrusion and the coil share a common axis.

[0037] In some technical solutions of the present application, a plurality of protrusions are provided, and the plurality of protrusions are spaced apart in the radial direction of the coil.

[0038] In some technical solutions of the present application, among the plurality of protrusions, at least one protrusion is opposite to the avoidance region; and / or among the plurality of protrusions, at least one protrusion is located on a peripheral side of the avoidance region.

[0039] In some technical solutions of the present application, the magnetic component comprises: a plurality of magnetic strips provided at the heat insulation component, where the plurality of magnetic strips extend in the radial direction of the coil, and the plurality of magnetic strips are spaced apart in the circumferential direction of the coil; a first rib provided on the side of the plurality of magnetic strips facing the heat insulation component, where each magnetic strip comprises at least one first rib, and the first ribs on the plurality of magnetic strips are combined to form an annular protrusion.

[0040] In some technical solutions of the present application, the magnetic component comprises a plurality of arrays, and each array comprises a plurality of magnetic strips; the plurality of magnetic strips belonging to the same array are distributed in a fan-shaped region.

[0041] In some technical solutions of the present application, each array comprises: a first magnetic strip, where a first rib is provided at both the inner end and the outer end of the first magnetic strip in the radial direction of the coil; and a second magnetic strip, where the length of the second magnetic strip is less than the length of the first magnetic strip, and a first rib is provided at the outer end of the second magnetic strip in the radial direction of the coil.

[0042] In some technical solutions of the present application, the magnetic component comprises: a plurality of magnetic sheets, where the magnetic sheet is fan-shaped, and the plurality of magnetic sheets are distributed in the circumferential direction of the coil; a second rib, provided on the side of the plurality of magnetic sheets facing the heat insulation component, where each magnetic sheet comprises at least one second rib, and the second ribs on the plurality of magnetic sheets are combined to form an annular protrusion.

[0043] In some technical solutions of the present application, the second side of the support component comprises an installation groove, and the magnetic component is provided in the installation groove; the support component further comprises an avoidance hole, and the protrusion partially passes through the avoidance hole.

[0044] In some technical solutions of the present application, the second side of the heat insulation component comprises an avoidance groove, and the protrusion is partially located in the avoidance groove.

[0045] In some technical solutions of the present application, the distance between the coil and the magnetic strip in the axial direction of the coil is a first distance; the first distance is greater than or equal to 4 mm and less than or equal to 9 mm.

[0046] In some technical solutions of the present application, the heat insulation component comprises a boss located in the avoidance region, and the coil further comprises a temperature sensor provided at the boss.

[0047] In some technical solutions of the present application, the heat insulation component comprises a through hole, and the winding is wound on the first side of the heat insulation component to form a coil; an electrical connection assembly is at least partially provided on the second side of the heat insulation component; the electrical connection assembly is connected to the winding through the through hole, or the winding partially extends to the second side of the heat insulation component through the through hole, and the electrical connection assembly is connected to the winding located on the second side of the heat insulation component; the support component comprises a via hole, the via hole is opposite to the through hole, and the electrical connection assembly or the winding passes through the through hole and the via hole.

[0048] In some technical solutions of the present application, the winding is spirally wound on the first side of the heat insulation component; the winding comprises an inner end and an outer end, the through hole comprises a first through hole and a second through hole, the electrical connection assembly is connected to the inner end of the winding through the first through hole, and the electrical connection assembly is connected to the outer end of the winding through the second through hole.

[0049] In some technical solutions of the present application, the electrical connection assembly comprises: a wire provided on the second side of the heat insulation component; a first terminal passing through the through hole and the via hole, and connecting the winding and the first end of the wire; and a second terminal connected to the second end of the wire, and configured to be connected to a circuit board.

[0050] In some technical solutions of the present application, the wire is at least partially attached to the second side of the support component, and the second terminal is located on the peripheral side of the support component.

[0051] In some technical solutions of the present application, the wire comprises: a first wire connected to the inner end of the winding; and a second wire connected to the outer end of the winding; where the first wire and the second wire are arranged side by side on the second side of the heat insulation component.

[0052] In some technical solutions of the present application, the second side of the support component comprises a limit groove, and the wire is snapped into the limit groove.

[0053] In some technical solutions of the present application, the coil disk further comprises: a fixation member connected to the support component, and a wire is clamped between the fixation member and the support component.

[0054] In some technical solutions of the present application, the winding passes through the through hole and the via hole; the winding comprises a heating section and a connection section, the heating section is spirally wound on the first side of the heat insulation component, and the connection section is connected to the electrical connection assembly on the second side of the support component.

[0055] In some technical solutions of the present application, the electrical connection assembly further comprises a third terminal connected to the connection section.

[0056] In some technical solutions of the present application, the connection section comprises a folded section, and the folded section has a multi-layered structure in the width direction of the winding.

[0057] In some technical solutions of the present application, the diameter of the through hole is a first diameter, and the first diameter is greater than or equal to 2.5 mm and less than or equal to 12.5 mm.

[0058] In some technical solutions of the present application, the diameter of the via hole is a second diameter, and the second diameter is larger than the first diameter; the difference between the second diameter and the first diameter is greater than or equal to 2 mm.

[0059] In some technical solutions of the present application, the coil comprises a plurality of layers in the radial direction; the distance between two adjacent layers is the radial spacing of the coil, and the coil comprises a plurality of radial spacings; among the plurality of radial spacings, at least one radial spacing is different from the other radial spacings.

[0060] In some technical solutions of the present application, the winding comprises a first segment and a second segment connected in series; the first segment comprises a plurality of first layers, and the distance between two adjacent first layers is a first radial spacing; the second segment comprises a plurality of second layers, and the distance between two adjacent second layers is a second radial spacing; the second radial spacing is greater than the first radial spacing.

[0061] In some technical solutions of the present application, the number of first segments is N+1, the number of second segments is N, and N is an integer greater than or equal to 1; in the extension direction of the winding, N+1 first segments and N second segments are alternately connected in series.

[0062] In some technical solutions of the present application, the first segment and the second segment are wound along an arc.

[0063] In some technical solutions of the present application, the first segment is wound along an arc; the second segment is wound along a broken line; and / or the second segment is wound along a wavy line.

[0064] In some technical solutions of the present application, the first segment is wound along a broken line and / or a wavy line; the second segment is wound along a broken line and / or a wavy line.

[0065] In some technical solutions of the present application, in the circumferential direction of the coil, the distance between two adjacent bent segments or the distance between two adjacent waves is the circumferential spacing of the coil; the first segment comprises a first circumferential spacing, the second segment comprises a second circumferential spacing, and the first circumferential spacing is greater than the second circumferential spacing.

[0066] In some technical solutions of the present application, the radial spacing is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0067] In some technical solutions of the present application, the distance between two adjacent wave crests in the centerline direction of the wavy line is the tooth pitch of the wavy line; the tooth pitch is greater than or equal to 1 mm and less than or equal to 15 mm.

[0068] In some technical solutions of the present application, in the direction perpendicular to the center line of the wavy line, a maximum value of a distance between adjacent wave crests and wave troughs is the tooth height of the wavy line; the tooth height is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0069] A second aspect of the present application provides a cooking device, comprising: a body; and the coil disk according to any one of the above technical solutions, where the coil disk is provided at the body.

[0070] Additional aspects and advantages of the present application will become apparent in the following description, or may be learned through practice of the present application.BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments taken in conjunction with the accompanying drawings. FIG. 1 is an exploded view of a coil disk according to an embodiment of the present application. FIG. 2 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 3 is a schematic structural view of a coil according to an embodiment of the present application. FIG. 4 is a partial enlarged view of the coil in region A in the embodiment shown in FIG. 3. FIG. 5 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 6 is a partial enlarged view of the coil in region B in the embodiment shown in FIG. 5. FIG. 7 is a cross-sectional view of a winding according to an embodiment of the present application. FIG. 8 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 9 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 10 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 11 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 12 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 13 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 14 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 15 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 16 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 17 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 18 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 19 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 20 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 21 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 22 is a cross-sectional view of the coil disk in the embodiment shown in FIG. 21 along line C-C. FIG. 23 is a schematic structural view of a first heat insulation component according to an embodiment of the present application. FIG. 24 is a schematic structural view of the first heat insulation component according to an embodiment of the present application. FIG. 25 is a schematic structural view of a second heat insulation component according to an embodiment of the present application. FIG. 26 is a cross-sectional view of the second heat insulation component in the embodiment shown in FIG. 25 along line D-D. FIG. 27 is a partial enlarged view of the coil disk in region E in the embodiment shown in FIG. 26. FIG. 28 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 29 is a cross-sectional view of the coil disk in the embodiment shown in FIG. 28 along line F-F. FIG. 30 is a partial enlarged view of the coil disk in region G in the embodiment shown in FIG. 29. FIG. 31 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 32 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 33 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 34 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 35 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 36 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 37 is a schematic structural view of a coil disk according to an embodiment of the present application. FIG. 38 is a schematic structural view of an array according to an embodiment of the present application. FIG. 39 is a schematic structural view of a magnetic component according to an embodiment of the present application. FIG. 40 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 41 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 42 is a schematic structural view of a magnetic sheet according to an embodiment of the present application. FIG. 43 is a schematic structural view of the magnetic component according to an embodiment of the present application. FIG. 44 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 45 is a schematic structural view of the magnetic component according to an embodiment of the present application. FIG. 46 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 47 is a schematic structural view of an electrical connection assembly according to an embodiment of the present application. FIG. 48 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 49 is a partial enlarged view of the coil disk in region H in the embodiment shown in FIG. 48. FIG. 50 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 51 is a partial enlarged view of the coil disk in region I in the embodiment shown in FIG. 50. FIG. 52 is a partial enlarged view of the coil disk in region J in the embodiment shown in FIG. 50. FIG. 53 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 54 is a partial enlarged view of the coil disk in region K in the embodiment shown in FIG. 53. FIG. 55 is a schematic structural view of the electrical connection assembly according to an embodiment of the present application. FIG. 56 is a partial enlarged view of the electrical connection assembly in region L in the embodiment shown in FIG. 55. FIG. 57 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 58 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 59 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 60 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 61 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 62 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 63 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 64 is a partial enlarged view of the coil disk in region M in the embodiment shown in FIG. 63. FIG. 65 is a schematic structural view of the winding according to an embodiment of the present application. FIG. 66 is a partial enlarged view of the winding in region N in the embodiment shown in FIG. 65. FIG. 67 is a schematic structural view of the winding according to an embodiment of the present application. FIG. 68 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 69 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 70 is a schematic structural view of a cooking device according to an embodiment of the present application. Description of reference signs:

[0072] 100 coil disk; 110 heat insulation component; 1102 first heat insulation component; 11022 slot; 11024 rib; 1104 second heat insulation component; 1105 avoidance groove; 1106 boss; 1107 through hole; 11072 first through hole; 11074 second through hole; 120 winding; 1204 inner end; 1206 outer end; 1208 connection section; 1209 folded section; 122 coil; 1222 layer; 1223 avoidance region; 1224 first segment; 12242 first layer; 1226 second segment; 12262 second layer; 124 first winding; 126 second winding; 130 support component; 1302 accommodation groove; 1304 installation groove; 1306 avoidance hole; 1307 via hole; 1308 limit groove; 140 magnetic component; 142 protrusion; 1422 first rib; 1424 second rib; 144 magnetic strip; 1442 array; 1444 first magnetic strip; 1446 second magnetic strip; 146 magnetic sheet; 150 temperature sensor; 160 electrical connection assembly; 162 wire; 1622 first wire; 1624 second wire; 164 first terminal; 166 second terminal; 168 third terminal; 170 fixation member; 200 cooking utensil; 300 cooking device; 310 bodyDETAILED DESCRIPTION

[0073] To enable a clearer understanding of the above objectives, features, and advantages of the present application, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, insofar as there is no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0074] Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0075] A coil disk and a cooking device according to some embodiments of the present application are described below with reference to FIGS. 1 to 70.

[0076] As shown in FIGS. 1, 2, 5, and 19, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110; and a winding 120 provided at the heat insulation component 110. The winding 120 is strip-shaped, and is spirally wound on the heat insulation component 110 to form a coil 122. When energized, the coil 122 can generate an electromagnetic field and thermal radiation.

[0077] The present application provides a coil disk 100 having both electromagnetic heating and thermal-radiation heating functions. The coil disk 100 comprises a heat insulation component 110 and a winding 120. The winding 120 is spirally wound on the heat insulation component 110. On the one hand, the heat insulation component 110 can position and support the winding 120; on the other hand, the heat insulation component 110 has excellent thermal insulation performance and can prevent heat transferred from the winding 120 from diffusing to outside of the heat insulation component 110.

[0078] On this basis, the winding 120 is strip-shaped, and the strip-shaped winding 120 is spirally wound on the heat insulation component 110 to form a spiral coil 122 on the heat insulation component 110. After the spiral coil 122 is energized, it can generate an electromagnetic field above it. At the same time, because the coil 122 has a certain internal resistance, the energized coil 122 can also simultaneously generate thermal radiation.

[0079] The intensity of the electromagnetic field and the intensity of the thermal radiation generated by the coil 122 may be allocated by changing the frequency of the supply current of the coil 122. Specifically, after a high-frequency current is applied to the coil 122, the coil 122 can not only generate an electromagnetic field, but also generate heat due to its own impedance. Specifically, when the frequency of the alternating current applied to the coil 122 increases, the impedance of the coil 122 also increases accordingly. After the impedance of the coil 122 is increased, the heat generated when current passes through the coil 122 also increases accordingly. Therefore, the coil 122 itself can generate sufficient heat, and this heat is transferred to the cooking utensil 200 to heat the cooking utensil 200.

[0080] During operation, if a magnetically conductive cooking utensil 200 is placed above the coil disk 100, the magnetically conductive cooking utensil 200 resonates in the electromagnetic field and generates eddy currents. Under the action of the eddy currents, the magnetically conductive cooking utensil 200 is gradually heated up, so that food is cooked by the high-temperature magnetically conductive cooking utensil 200. Meanwhile, the thermal radiation generated by the coil 122 can also provide auxiliary heating for the magnetically conductive cooking utensil 200 to increase the heating power.

[0081] If a non-magnetically conductive cooking utensil 200 is placed above the coil disk 100, although the non-magnetically conductive cooking utensil 200 cannot generate eddy currents by resonance in the electromagnetic field, the thermal radiation generated by the coil 122 can directly heat the non-magnetically conductive cooking utensil 200, so that food is cooked by the high-temperature non-magnetically conductive cooking utensil 200. In addition, because the coil 122 generates a large amount of thermal radiation, when a user tosses the pan, the actual heating effect of the coil disk 100 on the cooking utensil 200 will not be affected by positional displacement of the cooking utensil 200, thereby simulating the effect of open-flame cooking.

[0082] Thus, it can be seen that the coil disk 100 defined in the present application has both electromagnetic heating capability and thermal-radiation heating capability. When the cooking utensil 200 is a cooking utensil 200 having relatively high magnetic permeability, such as a metal cooking utensil 200, the cooking utensil 200 is heated by forming an eddy current therein through conventional induction heating. When the cooking utensil 200 is a cooking utensil 200 without relatively high magnetic permeability, such as a non-metal cooking utensil 200, the coil 122 itself is heated by increasing its own impedance based on the skin effect of the coil 122 through a higher oscillation frequency, and the cooking utensil 200 is heated by the heat generated by the heated coil 122. Accordingly, without changing the original hardware structure of the induction-heated cooking utensil 200, the induction-heated cooking utensil 200 can also heat a non-metal cooking utensil 200, thereby improving the versatility of the induction-heated cooking utensil 200 and solving the high-cost technical problem existing in the related art. Further, the technical effects of optimizing the structure of the coil disk 100, broadening the application range of the coil disk 100, improving the practicability of the coil disk 100, and reducing the manufacturing cost of the coil disk 100 are achieved.

[0083] By arranging the winding 120 as strip-shaped, the contact area between the winding 120 and air can be increased, thereby enhancing the thermal-radiation heating capability of the coil disk 100 while retaining the electromagnetic heating capability.

[0084] On this basis, after processing is completed, the winding 120 is in a spiral shape. During assembly of the coil disk 100, the winding 120 can be fixed by connecting the heat insulation component 110 and partial regions of the winding 120 through a connection mechanism. Compared with an enameled-wire winding process, the processed spiral winding 120 does not require support from a spiral bracket, and it can maintain its spiral shape by itself. Only several discrete contact points are needed to fix the winding 120. Therefore, by selecting a processed spiral winding 120, the contact area between the winding 120 and the heat insulation component 110 can be reduced, correspondingly reducing the heat transfer rate between the winding 120 and the heat insulation component 110, thereby lowering the temperature of the heat insulation component 110 during operation.

[0085] Specifically, the electromagnetic heating capability and thermal-radiation heating capability of the coil disk 100 may be allocated by regulating the frequency of the driving current to form various different heating modes.

[0086] Specifically, the winding 120 is made of a high-temperature-resistant metal material, and the winding 120 is required to withstand at least 600°C.

[0087] Specifically, the material of the heat insulation component 110 may be selected as white carbon black.

[0088] As shown in FIGS. 3 and 4, in some embodiments of the present application, the winding 120 comprises: a first winding 124. A dimension of the first winding 124 in the axial direction of the coil 122 is a first thickness T1, and a dimension of the first winding 124 in the radial direction of the coil 122 is a first width W1. The first width W1 is greater than the first thickness T1, and a ratio of the first width W1 to the first thickness T1 is greater than or equal to 2.

[0089] In FIG. 3, arrow a indicates the axial direction of the coil 122, and arrow b indicates the radial direction of the coil 122.

[0090] In this embodiment, the winding 120 comprises the first winding 124. The first winding 124 is formed into a spiral first winding 124 from a sheet-like base material. Specifically, by cutting the first winding 124 with a plane perpendicular to the extension path of the first winding 124, a first cross section can be obtained. The dimension of the first cross section in the axial direction of the coil 122 is the first thickness T1, and the dimension in the radial direction of the coil 122 is the first width W1, where the first width W1 is greater than the first thickness T1. During assembly, the sheet-like first winding 124 can simply be laid flat on the heat insulation component 110.

[0091] By defining the width of the first winding 124 to be greater than its thickness, the first winding 124 can have relatively strong deformation resistance in the radial direction while maintaining the strip-shaped form of the winding 120, so that the first winding 124 on the heat insulation component 110 can maintain a spiral shape without the aid of other structures, thereby preventing the heating effect of the coil disk 100 from being affected by uncontrollable deformation of the first winding 124. Accordingly, the technical effects of improving the structural strength of the first winding 124 and improving the heating reliability of the coil disk 100 are achieved.

[0092] The ratio of the first width W1 to the first thickness T1 is greater than or equal to 2, to ensure that the first winding 124 has a sufficiently large broad side area, thereby increasing the amount of thermal radiation from the first winding 124.

[0093] Specifically, the sheet-like base material may be machined into the spiral first winding 124 by a mechanical processing process, for example by wire cutting, laser cutting, punching, or the like.

[0094] The sheet-like base material may also be chemically etched into a spiral shape by an etching solution.

[0095] Specifically, the range of the first thickness T1 is greater than or equal to 0.1 mm and less than or equal to 10 mm.

[0096] In this embodiment, the value range of the first thickness T1 of the first winding 124 is defined.

[0097] Specifically, by defining the first thickness T1 as greater than or equal to 0.1 mm, it can be ensured that the first winding 124 has a certain bending resistance in the axial direction, thereby reducing the possibility that the first winding 124 warps upward or even breaks.

[0098] By defining the first thickness T1 as less than or equal to 10 mm, the internal resistance of the first winding 124 can be limited by limiting the cross-sectional area, thereby accurately allocating the electromagnetic heating capability and the thermal-radiation heating capability of the first winding 124 and avoiding excessive encroachment of the thermal-radiation heating capability on the electromagnetic heating capability.

[0099] Specifically, the first thickness T1 is selected to be above 1 mm.

[0100] As shown in FIGS. 5 and 6, in some embodiments of the present application, the winding 120 further comprises a second winding 126. A dimension of the second winding 126 in the axial direction of the coil 122 is a second thickness T2, and a dimension of the second winding 126 in the radial direction of the coil 122 is a second width W2. The second thickness T2 is greater than the second width W2, and a ratio of the second thickness T2 to the second width W2 is greater than or equal to 2.

[0101] In FIG. 5, arrow a indicates the axial direction of the coil 122, and arrow b indicates the radial direction of the coil 122.

[0102] In this embodiment, the winding 120 comprises the second winding 126. The second winding 126 is wound into a spiral shape from a strip-shaped base material.

[0103] Specifically, by cutting the second winding 126 with a plane perpendicular to the extension path of the second winding 126, a second cross section can be obtained. The dimension of the second cross section in the axial direction of the coil 122 is the second thickness T2, and the dimension of the second cross section in the radial direction of the coil 122 is the second width W2, where the second width W2 is smaller than the second thickness T2. After assembly is completed, the broad sides of the strip-shaped second winding 126 define the gaps between layers 1222, and the narrow side of the strip-shaped second winding 126 contacts the heat insulation component 110.

[0104] By providing the second winding 126 with a relatively large thickness and a relatively small width, the contact area between the second winding 126 and the heat insulation component 110 can be reduced by narrow-side contact, thereby reducing the heat transferred to the heat insulation component 110 and lowering the operating temperature of the heat insulation component 110.

[0105] At the same time, the strip-shaped second winding 126 can be tightly rolled into a bundle during transportation, thereby reducing transportation difficulty and transportation cost.

[0106] The ratio of the second thickness T2 to the second width W2 is greater than or equal to 2, so as to ensure that the second winding 126 has a wide surface with sufficient area, thereby increasing the heat radiation of the second winding 126.

[0107] Specifically, the second width W2 is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0108] In this embodiment, the range of the second width W2 of the second winding 126 is defined.

[0109] Specifically, by defining the second width W2 as greater than or equal to 0.1 mm, it can be ensured that the second winding 126 has a certain bending resistance in the radial direction, thereby reducing the possibility that the second winding 126 warps upward or even breaks.

[0110] By defining the second width W2 as less than or equal to 0.2 mm, on the one hand, the internal resistance of the second winding 126 can be limited by limiting the cross-sectional area; on the other hand, the second winding 126 can be rolled tightly into a bundle more conveniently, thereby providing convenient conditions for the lightweight design of the second winding 126.

[0111] Specifically, the second winding 126 is wave-shaped in its extension direction.

[0112] In this embodiment, the second winding 126 is wave-shaped in its extension direction. By arranging the second winding 126 in a wave shape, effective self-support can be provided for the second winding 126 through the corresponding wave-shaped narrow side, thereby reducing the possibility that the second winding 126 tilts or even topples, and thus achieving the technical effect of improving the structural stability of the second winding 126. At the same time, by configuring the second winding 126 in a wave shape, it is also beneficial to increase the spacing between two adjacent layers 1222 and reduce the possibility of a short circuit caused by contact between two adjacent layers 1222, thereby achieving the technical effect of improving the safety and reliability of the coil disk 100.

[0113] As shown in FIGS. 7, 8, 9, and 10, in some embodiments of the present application, the cross-sectional shape of the winding 120 comprises rectangle, trapezoid, parallelogram, or ellipse.

[0114] In this embodiment, the cross-sectional shape of the winding 120 comprises rectangle, trapezoid, parallelogram, or ellipse. Different sections of the same winding 120 may have different cross-sectional shapes, as long as the requirement of increasing thermal radiation by means of the strip-shaped form is satisfied.

[0115] Specifically, as shown in FIGS. 11, 68, and 69, the cross section of the winding 120 further include a racetrack shape. The racetrack-shaped winding 120 has two straight sides, which facilitates laying the winding 120 flat on the heat insulation component 110.

[0116] As shown in FIGS. 12 and 14, in some embodiments of the present application, the coil 122 comprises a plurality of layers 1222 in the radial direction, and the layers 1222 are circular or elliptical.

[0117] In FIGS. 12, 13, and 14, arrow e indicates the radial direction of the coil.

[0118] In this embodiment, the winding 120 forms a plurality of layers 1222 during spiral winding, and each turn layer 1222 has the same shape but different size. On this basis, the layers 1222 of the coil 122 are circular or elliptical, so that the formed coil 122 can fit the circular bottom surfaces of common cooking utensils 200 on the market, thereby ensuring that the coil disk 100 can provide effective heating for the cooking utensils 200.

[0119] As shown in FIG. 13, in some embodiments of the present application, the coil 122 comprises a plurality of layers 1222 in the radial direction, and the layers 1222 are polygonal.

[0120] In this embodiment, the winding 120 forms a plurality of layers 1222 during spiral winding, and each turn 1222 has the same shape but different size. On this basis, the layers 1222 of the coil 122 are polygonal. Specifically, the layers 1222 of the coil 122 may be selected as regular hexagons. By configuring the layers 1222 of the coil 122 as polygons, the winding difficulty of the winding 120 can be reduced, and the number of positioning points of the winding 120 on the heat insulation component 110 can be reduced, thereby achieving the technical effects of reducing the process complexity of the coil disk 100 and reducing the cost of the coil disk 100.

[0121] In some embodiments of the present application, the winding 120 is a metal winding; and the melting point of the metal winding is greater than or equal to 600°C.

[0122] In this embodiment, the winding 120 is made of a high-temperature-resistant material, and the melting point of the high-temperature-resistant metal is greater than or equal to 600°C, to ensure that the winding 120 will not melt under a high-power thermal-radiation heating mode, thereby achieving the technical effects of improving the reliability of the coil disk 100 and reducing the failure rate of the coil disk 100.

[0123] In some technical solutions of the present application, the coil disk 100 further comprises pins provided at the winding 120, and the pins are at least partially inserted into the heat insulation component 110.

[0124] In this technical solution, the coil disk 100 is further provided with pins, and the pins are connected to the winding 120 and located on the side of the winding 120 facing the heat insulation component 110. The number of pins is plural, and the plurality of pins are spaced apart in the extension direction of the winding 120.

[0125] By providing the pins, the winding 120 can be inserted and mounted on the heat insulation component 110 during assembly. On the one hand, the winding 120 can be positioned by the pins and deformation of the winding 120 can be restricted; on the other hand, the assembly difficulty of the winding 120 and the structural complexity of the coil disk 100 can be simplified.

[0126] When a heat insulation component 110 with relatively high hardness is selected, insertion holes may be reserved on the heat insulation component 110, and the winding 120 can be assembled by correspondingly inserting the pins into the insertion holes.

[0127] When a heat insulation component 110 with relatively low hardness is selected, insertion marks may be provided at the heat insulation component 110, and the assembly can be completed by correspondingly inserting the pins aligned with the insertion marks into the heat insulation component 110.

[0128] As shown in FIGS. 15, 16, 17, and 18, in some embodiments of the present application, the coil disk 100 further comprises: a support component 130 connected to the heat insulation component 110; and a magnetic component 140 provided between the support component 130 and the heat insulation component 110.

[0129] In this embodiment, the coil disk 100 further comprises the support component 130 and the magnetic component 140. The support component 130 is connected to the heat insulation component 110, and the support component 130 can support and protect the heat insulation component 110 and the winding 120. The thermal radiation generated by the energized coil 122 is blocked by the heat insulation component 110, to reduce the operating temperature of the support component 130 and avoid melting of the support component 130 due to high temperature.

[0130] On this basis, the coil disk 100 further comprises the magnetic component 140. The magnetic component 140 is provided at the support component 130, and is located between the support component 130 and the coil 122. By providing the magnetic component 140, the distribution of the electromagnetic field on the side of the coil 122 away from the cooking utensil 200 can be changed, so that the electromagnetic field generated by the coil 122 can be concentrated on the side where the cooking utensil 200 is located, thereby concentratively heating the cooking utensil 200 and achieving the technical effects of improving electromagnetic heating efficiency and electromagnetic heating energy efficiency.

[0131] As shown in FIG. 17, in some embodiments of the present application, the magnetic component 140 is strip-shaped, and the length direction of the magnetic component 140 is consistent with the radial direction of the coil 122.

[0132] In this embodiment, the magnetic component 140 is strip-shaped, and the length direction of the magnetic component 140 is consistent with the radial direction of the coil 122. By arranging the magnetic component 140 along the radial direction of the coil 122, the deflection effect of the electromagnetic field can be enhanced, so that the electromagnetic field is concentrated on the cooking utensil 200 on the opposite side.

[0133] On this basis, a plurality of magnetic components 140 are provided, and the plurality of magnetic components 140 are uniformly distributed in the circumferential direction of the coil 122. By providing a plurality of uniformly distributed magnetic components 140, dead angles of magnetic field deflection on the side of the coil 122 away from the cooking utensil 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0134] On this basis, a plurality of magnetic components 140 are provided, and the plurality of magnetic components 140 are uniformly distributed in the circumferential direction of the coil 122. By providing a plurality of uniformly distributed magnetic components 140, dead angles of magnetic field deflection on the side of the coil 122 away from the cooking utensil 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0135] As shown in FIGS. 19, 20, and 31, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a first heat insulation component 1102; a coil 122 provided on a first side of the first heat insulation component 1102, where the coil 122 can generate thermal radiation and an electromagnetic field after being energized; a magnetic component 140 provided on a second side of the heat insulation component away from the coil 122; and a second heat insulation component 1104 at least partially located between the first heat insulation component 1102 and the magnetic component 140, where the first heat insulation component 1102 and the second heat insulation component 1104 are made of different materials.

[0136] In FIG. 19, arrow f indicates the direction of heat transfer generated by the coil 122.

[0137] In FIG. 20, arrow g indicates the axial direction of the coil 122, corresponding to the thickness direction of the coil disk 100.

[0138] The present application provides a coil disk 100 having both electromagnetic heating and thermal-radiation heating functions.

[0139] The coil disk 100 comprises a coil 122. The winding is spirally wound to form the spiral coil 122. After the spiral coil 122 is energized, it can generate an electromagnetic field above it. Meanwhile, because the coil 122 has a certain internal resistance, the energized coil 122 can also simultaneously generate thermal radiation.

[0140] The coil disk 100 further comprises the first heat insulation component 1102 and the magnetic component 140. The magnetic component 140 is opposite to the coil 122, and is located on the side of the coil 122 away from the cooking utensil 200. By providing the magnetic component 140, the distribution of the electromagnetic field on the side of the coil 122 away from the cooking utensil 200 can be changed, so that the electromagnetic field generated by the coil 122 can be concentrated on the side where the cooking utensil 200 is located, thereby concentratively heating the cooking utensil 200 and achieving the technical effects of improving electromagnetic heating efficiency and electromagnetic heating energy efficiency.

[0141] The first heat insulation component 1102 is provided between the coil 122 and the magnetic component 140. A first side of the first heat insulation component 1102 faces the cooking utensil 200, and the coil 122 is provided on the first side of the first heat insulation component 1102. A second side of the first heat insulation component 1102 faces away from the cooking utensil 200, and the magnetic component 140 is provided on the second side of the first heat insulation component 1102. The first heat insulation component 1102 has excellent thermal insulation performance and can reduce the heat diffused from the high-temperature cooking utensil 200 and the high-temperature coil 122 to the magnetic component 140, so that the magnetic component 140 remains at a relatively low temperature during operation, thereby preventing the magnetic component 140 from losing magnetism due to high temperature and ensuring the operation reliability of the coil disk 100.

[0142] On this basis, the coil disk 100 further comprises the second heat insulation component 1104. The second heat insulation component 1104 is provided on the side of the first heat insulation component 1102 facing away from the coil 122. After assembly is completed, the second heat insulation component 1104 at least fills the region between the first heat insulation component 1102 and the magnetic component 140. The second heat insulation component 1104 can form a second barrier between the first heat insulation component 1102 and the magnetic component 140, to further reduce the heat transfer efficiency between the coil 122 and the magnetic component 140.

[0143] The material of the second heat insulation component 1104 is different from that of the first heat insulation component 1102. The first heat insulation component 1102 not only needs to have excellent thermal insulation performance, but also needs to have sufficient hardness and rigidity to ensure that the first heat insulation component 1102 can provide effective and reliable support for the coil 122. For example, the material of the first heat insulation component 1102 may be a mixture of white carbon black and silicon carbide stone, or flexible vacuum silicon insulation cotton. The second heat insulation component 1104 does not contact the coil 122, and therefore has lower requirements for hardness and rigidity. Accordingly, the main task of the second heat insulation component 1104 is to reduce the heat conduction efficiency between the coil 122 and the magnetic component 140. Therefore, by selecting a different material, the second heat insulation component 1104 can have better thermal insulation performance than the first heat insulation component 1102. For example, the second heat insulation component 1104 may be made of aerogel.

[0144] When a single thermal insulation material is filled between the coil 122 and the magnetic component 140, the filling thickness required to meet the target thermal insulation requirement is relatively large, which is unfavorable for an ultra-thin design of the coil disk 100. In the present application, by using, in cooperation with the first heat insulation component 1102, the second heat insulation component 1104 having better filling-material insulation performance, the filling thickness between the coil 122 and the magnetic component 140 can be reduced while satisfying the positioning and support requirements of the coil 122, thereby solving the technical defect in the related art that the thickness of the coil disk 100 is relatively large, and further achieving the technical effects of optimizing the structure of the coil disk 100, improving the structural compactness of the coil disk 100, reducing the thickness of the coil disk 100, and facilitating miniaturized design of the coil disk 100.

[0145] As shown in FIGS. 20, 21, 22, and 23, in some embodiments of the present application, the coil disk 100 further comprises a support component 130. A first side of the support component 130 comprises an accommodation groove 1302. The coil 122 and the first heat insulation component 1102 are provided in the accommodation groove 1302, and the magnetic component 140 is provided on a second side of the support component 130.

[0146] In this embodiment, the first side of the support component 130 is formed with the accommodation groove 1302, and the accommodation groove 1302 faces the cooking utensil 200. The first heat insulation component 1102 and the coil 122 are provided in the accommodation groove 1302. The magnetic component 140 is fixed to the second side of the support component 130. During assembly, the magnetic component 140 is first assembled to the support component 130, and then the heat insulation component and the coil 122 are placed into the accommodation groove 1302 and fixedly connected to the support component 130.

[0147] As shown in FIGS. 28, 29, and 30, in some embodiments of the present application, the second heat insulation component 1104 is located between the first heat insulation component 1102 and the magnetic component 140.

[0148] In this embodiment, the second heat insulation component 1104 is provided only between the first heat insulation component 1102 and the magnetic component 140. The second heat insulation component 1104 is sheet-shaped, the second heat insulation component 1104 is provided on the second side of the support component 130, a gap is left between the magnetic component 140 and the support component 130, and the second heat insulation component 1104 fills the gap.

[0149] During operation, part of the heat generated by the coil 122 is transferred toward the direction where the magnetic component 140 is located. The first heat insulation component 1102 can reduce the rate at which the heat is transferred to the support component 130. After the heat passes across the support component 130 and is transferred to the second heat insulation component 1104, the second heat insulation component 1104 further reduces the rate at which the heat is transferred to the magnetic component 140, thereby forming two thermal insulation protections to reduce the temperature of the magnetic component 140 during operation, avoid demagnetization of the magnetic component 140 due to high temperature, ensure that the magnetic component 140 can concentrate the electromagnetic field on the cooking utensil 200 located on the first side of the coil 122, and further achieve the technical effects of improving the thermal insulation performance of the coil disk 100 and improving the heating efficiency and heating reliability of the coil disk 100.

[0150] As shown in FIGS. 28, 29, and 30, in some embodiments of the present application, the second heat insulation component 1104 is provided between the first heat insulation component 1102 and the support component 130.

[0151] In this embodiment, the second heat insulation component 1104 is provided only between the first heat insulation component 1102 and the magnetic component 140. The second heat insulation component 1104 is sheet-shaped, the second heat insulation component 1104 is provided inside the accommodation groove 1302, a gap is left between the first heat insulation component 1102 and the bottom surface of the accommodation groove 1302, and the second heat insulation component 1104 is provided in the gap.

[0152] During operation, part of the heat generated by the coil 122 is transferred toward the direction where the magnetic component 140 is located. The first heat insulation component 1102 can reduce the rate at which the heat is transferred to the second heat insulation component 1104. After the heat is transferred to the second heat insulation component 1104, the second heat insulation component 1104 further reduces the rate at which the heat is transferred to the support component 130 and the magnetic component 140, thereby forming two thermal insulation protections to reduce the temperature of the magnetic component 140 during operation, avoid demagnetization of the magnetic component 140 due to high temperature, ensure that the magnetic component 140 can concentrate the electromagnetic field on the cooking utensil 200 located on the first side of the coil 122, and further achieve the technical effects of improving the thermal insulation performance of the coil disk 100 and improving the heating efficiency and heating reliability of the coil disk 100.

[0153] As shown in FIGS. 32, 33, and 34, in some embodiments of the present application, the second heat insulation component 1104 wraps the magnetic component 140.

[0154] In this embodiment, the second heat insulation component 1104 is provided at the outer surface of the magnetic component 140, and the second heat insulation component 1104 at least covers the surface of the magnetic component 140 facing the support component 130. Specifically, the entire magnetic component 140 may be wrapped by the second heat insulation component 1104.

[0155] In this case, the second heat insulation component 1104 and the magnetic component 140 are combined into a module. During the process of assembling the magnetic component 140 to the support component 130, assembly of the second heat insulation component 1104 is completed simultaneously. Therefore, the second heat insulation component 1104 wrapped outside the magnetic component 140 reduces the rate at which heat is transferred to the magnetic component 140, so that the magnetic component 140 can remain at a relatively low temperature during operation, thereby achieving the technical effects of reducing the process complexity of the coil disk 100 and reducing the assembly difficulty of the coil disk 100.

[0156] As shown in FIG. 24, in some embodiments of the present application, the thickness H1 of the first heat insulation component 1102 is greater than or equal to 4 mm and less than or equal to 9 mm.

[0157] In this embodiment, the axial direction of the coil 122 corresponds to the thickness direction of the coil disk 100, and the thickness of the first heat insulation component 1102 needs to be greater than or equal to 4 mm and less than or equal to 9 mm.

[0158] By defining the thickness of the first heat insulation component 1102 as greater than or equal to 4 mm, it can be ensured that the first heat insulation component 1102 has sufficient hardness and rigidity, thereby ensuring that the first heat insulation component 1102 can effectively support and position the coil 122 and prolonging the service life of the first heat insulation component 1102.

[0159] By defining the thickness of the first heat insulation component 1102 as less than or equal to 9 mm, the space occupied by the first heat insulation component 1102 in the thickness direction of the coil disk 100 can be reduced on the basis of meeting the thermal insulation requirement of the first heat insulation component 1102, thereby facilitating ultra-thin design of the coil disk 100.

[0160] In an embodiment, when the coil disk 100 is applied to an induction cooker, the thickness of the first heat insulation component 1102 is greater than or equal to 5 mm and less than or equal to 7 mm.

[0161] As shown in FIG. 24, in some embodiments of the present application, the first heat insulation component 1102 comprises slots 11022, and the coil 122 is partially inserted into the slots 11022. The depth H2 of the slots 11022 is greater than or equal to 3 mm to less than or equal to 4 mm.

[0162] In this embodiment, the first side of the first heat insulation component 1102 is provided with the slots 11022, and correspondingly, the coil 122 is provided with pins. During assembly, the assembly of the coil 122 on the first heat insulation component 1102 can be completed simply by inserting the pins on the coil 122 into the slots 11022. The cooperation between the pins and the slots 11022 can maintain the coil 122 in a spiral shape on the first heat insulation component 1102, thereby reducing the possibility of misalignment and deformation of the coil 122, improving the heating reliability of the coil disk 100, and reducing the failure rate of the coil disk 100.

[0163] On this basis, the depth of the slots 11022 is greater than or equal to 3 mm and less than or equal to 4 mm.

[0164] By defining the depth of the slots 11022 as greater than or equal to 3 mm, it can be ensured that the slots 11022 can cooperate with the pins to provide effective positioning and support for the coil 122, thereby avoiding misalignment and deformation of the coil 122 due to external impact or internal stress and improving the positioning accuracy of the coil 122.

[0165] By defining the depth of the slots 11022 as less than or equal to 4 mm, structural damage to the first heat insulation component 1102 caused by the coil 122 can be reduced while satisfying the positioning requirement of the coil 122. On the one hand, it is ensured that the first heat insulation component 1102 has sufficient rigidity and hardness, thereby reducing the probability of damage to the heat insulation component; on the other hand, it is ensured that the first heat insulation component 1102 has sufficient thermal insulation performance, thereby reducing the heat transferred from the slots 11022 to the magnetic component 140.

[0166] As shown in FIGS. 25, 26, and 27, in some embodiments of the present application, between the first heat insulation component 1102 and the magnetic component 140, the thickness H3 of the second heat insulation component 1104 is greater than or equal to 1 mm to less than or equal to 5 mm.

[0167] In this embodiment, the thickness of the second heat insulation component 1104 located between the first heat insulation component 1102 and the magnetic component 140 needs to be greater than or equal to 1 mm and less than or equal to 5 mm.

[0168] By defining the filling thickness of the second heat insulation component 1104 between the first heat insulation component 1102 and the magnetic component 140 as greater than or equal to 1 mm, it can be ensured that the second heat insulation component 1104 can form an effective second thermal insulation protection on the basis of the first heat insulation component 1102, so that the magnetic component 140 can remain in a relatively low temperature range during operation.

[0169] By defining the filling thickness of the second heat insulation component 1104 between the first heat insulation component 1102 and the magnetic component 140 as less than or equal to 5 mm, the thickness of the coil disk 100 can be reduced while meeting the thermal insulation requirement, thereby facilitating ultra-thin design of the coil disk 100.

[0170] As shown in FIGS. 21 and 22, in some embodiments of the present application, the first side of the first heat insulation component 1102 comprises ribs 11024, and the ribs 11024 are arranged in a staggered manner with respect to the coil 122.

[0171] In this embodiment, the first side of the first heat insulation component 1102 is provided with the ribs 11024, and the ribs 11024 can improve the structural strength of the first heat insulation component 1102 to reduce the possibility of deformation or even breakage of the first heat insulation component 1102.

[0172] In an embodiment, the ribs 11024 comprise annular first ribs and columnar second ribs. The first ribs surround the coil 122. The first ribs can not only enhance the structural strength of the first heat insulation component 1102, but can also reduce the rate at which the coil 122 diffuses heat to the surroundings, thereby improving the heating energy efficiency of the coil disk 100.

[0173] The second rib is provided at the center of the spiral coil 122, that is, the coil disk 100 is wound around the second rib. The second rib can provide an installation space for a temperature sensor. The temperature sensor is configured to detect the temperature of the cooking utensil 200. By providing the temperature sensor at the second rib, the temperature sensor and the coil 122 can be staggered to avoid the heated coil 122 affecting the detection result of the temperature sensor, thereby improving the detection accuracy of the temperature sensor.

[0174] As shown in FIGS. 19, 35, 40, and 41, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110; a coil 122 provided on a first side of the heat insulation component 110, where the coil 122 can generate thermal radiation and an electromagnetic field after being energized, and a center of the coil 122 comprises an avoidance region 1223; and a magnetic component 140 provided on a second side of the heat insulation component 110 away from the coil 122, where the magnetic component 140 is provided, on a side facing the heat insulation component 110, with a protrusion 142.

[0175] In FIG. 19, arrow f indicates the transfer direction of the thermal radiation generated by the coil 122.

[0176] In FIG. 35, arrow g indicates the axial direction of the coil 122, corresponding to the thickness direction of the coil disk 100; arrow h indicates the radial direction of the coil 122; and arrow i indicates the circumferential direction of the coil 122.

[0177] In FIG. 41, arrow j indicates the converging direction of the magnetic field.

[0178] In this embodiment, the heat insulation component 110 is provided between the coil 122 and the magnetic component 140. A first side of the heat insulation component 110 faces the cooking utensil 200, and the coil 122 is provided on the first side of the heat insulation component 110. A second side of the heat insulation component 110 faces away from the cooking utensil 200, and the magnetic component 140 is provided on the second side of the heat insulation component 110. The heat insulation component 110 has excellent thermal insulation performance and can reduce the heat diffused from the high-temperature cooking utensil 200 and the high-temperature coil 122 to the magnetic component 140, so that the magnetic component 140 remains at a relatively low temperature during operation, thereby preventing the magnetic component 140 from demagnetizing due to high temperature and ensuring the operation reliability of the coil disk 100.

[0179] In an embodiment, the middle of the coil 122 is formed with the avoidance region 1223, in which no winding is provided. The avoidance region 1223 may be used for mounting a temperature sensor 150. The temperature sensor 150 is configured to detect the temperature of the cooking utensil 200 above the coil 122 to control the power of the coil 122 according to the detected temperature. Since no winding is arranged in the avoidance region 1223, interference of the coil 122 with the temperature sensor 150 during heating of the cooking utensil 200 is relatively small, and thus temperature measurement error can be reduced. Correspondingly, however, the avoidance region 1223 loses the ability to heat the cooking utensil 200 and forms a heating cold zone, causing the heating effect on the region of the cooking utensil 200 corresponding to the avoidance region 1223 to be weaker than that in other regions, thus resulting in the technical defect of uneven heating.

[0180] On this basis, the magnetic component 140 is provided with the protrusion 142. The protrusion 142 is provided on the side of the magnetic component 140 facing the heat insulation component 110. After the coil 122 is energized, on the basis that the magnetic component 140 can concentrate the electromagnetic field toward the side where the coil 122 is located, the protrusion 142 protruding toward the direction where the coil 122 is located can concentrate the electromagnetic field toward the avoidance region 1223 at the center of the coil 122, so as to increase the magnetic field strength in the avoidance region 1223 without changing the power of the coil 122, reduce the heating difference between the avoidance region 1223 and the surrounding other regions, and avoid forming an obvious cold zone on the cooking utensil 200, thereby alleviating the technical defect existing in the related art, and further achieving the technical effects of optimizing the structure of the coil disk 100 and improving the heating uniformity and heating reliability of the coil disk 100.

[0181] In an embodiment, the raw material of the winding wound into the coil 122 is a high-temperature-resistant metal material, and the high-temperature-resistant metal material also has a relatively low linear expansion coefficient so as to avoid damage or deformation of the coil 122 at high temperature. Specifically, the coil 122 may be made of copper alloy or iron alloy.

[0182] In an embodiment, the material of the heat insulation component 110 may be a mixture of white carbon black and silicon carbide stone, or flexible vacuum silicon insulation cotton.

[0183] As shown in FIGS. 38, 39, 40, 42, and 43, in some embodiments of the present application, the protrusion 142 is annular; and the protrusion 142 and the coil 122 share a common axis.

[0184] In this embodiment, the protrusion 142 on the magnetic component 140 is annular. Specifically, the protrusion 142 may be a continuous annular structure, or may be a discontinuous annular structure having a plurality of intervals. By providing the protrusion 142 as annular, the magnetic field can be converged from multiple directions or even all directions, so that the magnetic field can be concentrated toward the avoidance region 1223 at the center of the coil 122, thereby improving the heating capability of the avoidance region 1223.

[0185] The annular protrusion 142 and the spirally wound coil 122 share a common axis. The axis is located in the avoidance region 1223. By providing the coil 122 and the protrusion 142 coaxially, the effect of the annular protrusion 142 in converging the magnetic field generated by the coil 122 can be enhanced, so that the magnetic field generated by the spiral coil 122 can gather toward the avoidance region 1223 where the axis is located, thereby avoiding the converged magnetic field from deviating out of the avoidance region 1223 and compensating for the heating deficiency of the avoidance region 1223.

[0186] As shown in FIGS. 39, 40, and 43, in some embodiments of the present application, a plurality of protrusions 142 are provided, and the plurality of protrusions 142 are spaced apart in the radial direction of the coil 122.

[0187] In this embodiment, on the basis that the protrusion 142 is annular, the side of the magnetic component 140 facing the coil 122 is provided with a plurality of protrusions 142. The plurality of protrusions 142 are different in size, and are spaced apart in the radial direction of the coil 122, that is, the plurality of protrusions 142 are nested.

[0188] By providing a plurality of nested protrusions 142 on the magnetic component 140, multiple barriers can be formed in the radial direction of the coil 122, thereby enhancing the effect of converging the magnetic field toward the center of the coil 122, improving the electromagnetic heating capability of the avoidance region 1223, and avoiding an obvious heating cold zone on the cooking utensil 200.

[0189] In an embodiment, the number of protrusions 142 may be adjusted according to parameters such as the size of the coil 122, the size of the cooking utensil 200 frequently heated, and the rated heating power. In this embodiment, no strict limitation is imposed thereon, as long as the heating uniformity requirements of the cooking utensil 200 are satisfied.

[0190] As shown in FIGS. 39, 40, and 43, in some embodiments of the present application, among the plurality of protrusions 142, at least one protrusion 142 is opposite to the avoidance region 1223; and / or among the plurality of protrusions 142, at least one protrusion 142 is located on the peripheral side of the avoidance region 1223.

[0191] In this embodiment, among the plurality of annular protrusions 142, at least one protrusion 142 is opposite to the avoidance region 1223, that is, located on the inner side of the avoidance region 1223. When the coil 122 is energized, the electromagnetic field is concentrated along the protrusion 142 toward the corresponding avoidance region 1223, thereby increasing the magnetic field strength of the avoidance region 1223 and enhancing the heating effect of the avoidance region 1223.

[0192] Correspondingly, among the plurality of annular protrusions 142, at least one protrusion 142 is opposite to the region where the winding around the avoidance region 1223 is located, that is, located on the peripheral side of the avoidance region 1223. When the coil 122 is energized, the protrusion 142 located on the peripheral side of the avoidance region 1223 suppresses the tendency of the electromagnetic field to diffuse toward the surroundings, thereby increasing the magnetic field strength of the avoidance region 1223 and enhancing the heating effect of the avoidance region 1223.

[0193] In an embodiment, the annular protrusions 142 may be provided both on the inner side and the peripheral side of the avoidance region 1223 to reduce the heating difference between the avoidance region 1223 and the surrounding regions where the winding is located.

[0194] As shown in FIGS. 38, 39, and 40, in some embodiments of the present application, the magnetic component 140 comprises: magnetic strips 144 provided at the heat insulation component 110, the magnetic strips 144 extending in the radial direction of the coil 122, where a plurality of magnetic strips 144 are provided and the plurality of magnetic strips 144 are spaced apart in the circumferential direction of the coil 122; and first ribs 1422 provided on the side of the magnetic strips 144 facing the heat insulation component 110, where each magnetic strip 144 comprises at least one first rib 1422, and the first ribs 1422 on the plurality of magnetic strips 144 are combined to form the annular protrusion 142.

[0195] In this embodiment, the magnetic component 140 comprises a plurality of magnetic strips 144. The magnetic strips 144 extend in the radial direction of the coil 122, and the plurality of magnetic strips 144 are spaced apart along the circumferential direction of the coil 122. Specifically, the plurality of magnetic strips 144 may be uniformly distributed below the coil 122, that is, the angle between any two adjacent magnetic strips 144 among the plurality of magnetic strips 144 is the same.

[0196] On this basis, each of the plurality of magnetic strips 144 is provided with at least one first rib 1422. An comprised angle is formed between the extension direction of the first rib 1422 on the magnetic strip 144 and the radial direction of the coil 122. For example, a strip-shaped first rib 1422 perpendicular to the radial direction of the coil 122 can be provided, or an arc-shaped first rib 1422 extending on a circle with the axis of the coil 122 as the axis can be provided.

[0197] The first ribs 1422 on the plurality of magnetic strips 144 together form the annular and discontinuous protrusion 142. No first rib 1422 is provided between two adjacent magnetic strips 144, and correspondingly, a notch is provided in the protrusion 142.

[0198] When a plurality of annular protrusions 142 are provided in the radial direction of the coil 122, at least some of the plurality of magnetic strips 144 are correspondingly provided with a plurality of first ribs 1422, and the plurality of first ribs 1422 are spaced apart in the length direction of the magnetic strip 144, so as to form a plurality of protrusions 142 nested inside and outside.

[0199] This structure can make reasonable use of the structure of the magnetic strips 144 below the coil 122. Specifically, the annular protrusion 142 is formed by providing the ribs at the magnetic strip 144, thereby reducing the modification difficulty and modification cost of the coil disk 100 while satisfying the requirement for magnetic field convergence and improving the heating capability of the avoidance region 1223.

[0200] As shown in FIGS. 38 and 39, in some embodiments of the present application, the magnetic component 140 comprises a plurality of arrays 1442, and each array 1442 comprises a plurality of magnetic strips 144; the plurality of magnetic strips 144 belonging to the same array 1442 are distributed in a fan-shaped region.

[0201] In this embodiment, the magnetic component 140 comprises a plurality of arrays 1442, and each array 1442 comprises a plurality of magnetic strips 144, where each array 1442 corresponds to a sector below the coil 122. The plurality of arrays 1442 are spliced below the coil 122 to facilitate the formation of the annular protrusion 142 below the coil 122.

[0202] In an embodiment, the converging effect of the magnetic field may be adjusted by adjusting the number of arrays 1442 and the number of magnetic strips 144 comprised in each array 1442. For example, when high heating uniformity is required, the number of arrays 1442 and the number of magnetic strips 144 in each array 1442 may be increased; otherwise, the number of arrays 1442 and the number of magnetic strips 144 in each array 1442 may be reduced.

[0203] As shown in FIGS. 38 and 39, in some embodiments of the present application, the array 1442 comprises: a first magnetic strip 1444, where in the radial direction of the coil 122, both an inner end and an outer end of the first magnetic strip 1444 are provided with first ribs 1422; and a second magnetic strip 1446, where the second magnetic strip 1446 is shorter than the first magnetic strip 1444, and in the radial direction of the coil 122, an outer end of the second magnetic strip 1446 is provided with a first rib 1422.

[0204] In this embodiment, the magnetic component 140 comprises inner and outer two protrusions 142, where the outer protrusion 142 is located on the peripheral side of the avoidance region 1223, and the inner protrusion 142 is opposite to the avoidance region 1223.

[0205] On this basis, the array 1442 comprises the first magnetic strip 1444 and the second magnetic strip 1446. The first magnetic strip 1444 and the second magnetic strip 1446 are distinguished by their lengths and by the number of the first ribs 1422 thereon. The first magnetic strip 1444 is longer, and both ends thereof are provided with first ribs 1422. Viewed from the side, the first magnetic strip 1444 is U-shaped. The second magnetic strip 1446 is shorter than the first magnetic strip 1444, and only the outer end of the second magnetic strip 1446 is provided with a first rib 1422. Viewed from the side, the second magnetic strip 1446 is L-shaped.

[0206] After assembly of the plurality of arrays 1442 is completed, the first rib 1422 at the outer end of the first magnetic strip 1444 cooperates with the first rib 1422 at the outer end of the second magnetic strip 1446 to form the protrusion 142 located on the peripheral side of the avoidance region 1223, and the first rib 1422 at the inner end of the first magnetic strip 1444 forms the protrusion 142 opposite to the avoidance region 1223.

[0207] Thus, it can be seen that, by providing the second magnetic strip 1446 having a shorter length in cooperation with the first magnetic strip 1444, the small-size central region can be reasonably avoided. Only the first ribs 1422 at the inner ends of a few first magnetic strips 1444 are used to form the protrusion 142 having a relatively small circumferential dimension, thereby avoiding accumulation and interference of multiple magnetic strips 144 in the central region. Meanwhile, the combination of the first ribs 1422 at the outer ends of the first magnetic strips 1444 and the first ribs 1422 at the outer ends of the second magnetic strips 1446 can ensure the density of the protrusion 142 on the peripheral side of the avoidance region 1223, thereby avoiding excessive sparsity of the outer protrusion 142 having a relatively large circumferential dimension. Further, the technical effects of improving the converging effect and converging uniformity of the electromagnetic field, and improving the heating uniformity and reliability of the coil disk 100 are achieved.

[0208] As shown in FIGS. 42 and 43, in some embodiments of the present application, the magnetic component 140 comprises: magnetic sheets 146, where the magnetic sheets 146 are fan-shaped, a plurality of magnetic sheets 146 are provided, and the plurality of magnetic sheets 146 are distributed in the circumferential direction of the coil 122; and second ribs 1424 provided on the side of the magnetic sheets 146 facing the heat insulation component 110, where each magnetic sheet 146 comprises at least one second rib 1424, and the second ribs 1424 on the plurality of magnetic sheets 146 are combined to form the annular protrusion 142.

[0209] In this embodiment, the magnetic component 140 comprises a plurality of magnetic sheets 146, and the magnetic sheets 146 are fan-shaped. Each magnetic sheet 146 corresponds to a sector below the coil 122, and the plurality of magnetic sheets 146 are spliced below the coil 122 to form the annular magnetic component 140.

[0210] On this basis, both the inner end and the outer end of each magnetic sheet 146 are provided with second ribs 1424. The second ribs 1424 at the outer ends of the plurality of magnetic sheets 146 form the protrusion 142 on the peripheral side of the avoidance region 1223, and the second ribs 1424 at the inner ends of the plurality of magnetic sheets 146 form the protrusion 142 opposite to the avoidance region 1223, thereby forming inner and outer two magnetic-field converging structures.

[0211] Compared with the solution using the magnetic strips 144, the magnetic sheets 146 have a higher coverage rate below the coil 122. It is even possible to cover the entire region below the coil 122 with a plurality of closely fitted magnetic sheets 146, thereby reducing the magnetic field strength below the magnetic sheets 146 and improving the effect of the magnetic component 140 in converging the magnetic field upward. Meanwhile, compared with the solution using the magnetic strips 144, the notches in the protrusion 142 spliced by the plurality of magnetic sheets 146 are smaller, or can even be eliminated by close fitting, thereby improving the effect of the protrusion 142 in converging the magnetic field toward the center of the coil 122 and improving the heating capability of the avoidance region 1223.

[0212] As shown in FIGS. 35, 36, and 37, in some embodiments of the present application, the coil disk 100 further comprises a support component 130. A first side of the support component 130 comprises an accommodation groove 1302, the heat insulation component 110 and the coil 122 are provided in the accommodation groove 1302, and the magnetic component 140 is provided on a second side of the support component 130.

[0213] As shown in FIGS. 35 and 37, in some embodiments of the present application, the second side of the support component 130 comprises an installation groove 1304, and the magnetic component 140 is provided in the installation groove 1304. The support component 130 further comprises an avoidance hole 1306, and the protrusion 142 partially passes through the avoidance hole 1306.

[0214] In this embodiment, the support component 130 is formed of a non-magnetically conductive material to avoid the support component 130 interfering with the coil 122 and the magnetic component 140. On this basis, the side of the support component 130 away from the heat insulation component 110 is provided with the installation groove 1304, that is, the installation groove 1304 is opposite to the accommodation groove 1302. The shape of the installation groove 1304 matches the outer contour shape of the magnetic component 140, so that the magnetic component 140 can be embedded in the installation groove 1304.

[0215] By embedding the magnetic component 140 in the side of the support component 130 away from the heat insulation component 110, the support assembly can form a second barrier on the basis of the heat insulation component 110, thereby further reducing the heat diffused to the magnetic component 140. Meanwhile, the installation groove 1304 provided at the back surface of the support component 130 can, on the one hand, facilitate disassembly and assembly of the magnetic component 140, and on the other hand improve the heat dissipation effect of the magnetic component 140 by exposing the magnetic component 140.

[0216] On this basis, the support component 130 is further provided with the avoidance holes 1306. The avoidance holes 1306 communicate with the installation groove 1304 and penetrate through the support component 130. During assembly, the magnetic strips 144 or the magnetic sheets 146 are embedded into the installation groove 1304, and the first ribs 1422 or the second ribs 1424 are inserted into the avoidance holes 1306. By providing the avoidance holes 1306 for accommodating the protrusions 142, on the one hand, the structural compactness of the coil disk 100 can be improved, the thickness of the coil disk 100 can be reduced, and convenient conditions can be provided for miniaturized design of the coil disk 100. On the other hand, the effect of converging the magnetic field toward the avoidance region 1223 can be improved by the protrusion 142 penetrating through the support component 130, thereby reducing the influence of structural blocking on magnetic field convergence.

[0217] As shown in FIGS. 35 and 44, in some embodiments of the present application, the second side of the heat insulation component 110 comprises avoidance grooves 1105, and the protrusion 142 is partially located in the avoidance grooves 1105.

[0218] In this embodiment, the side of the heat insulation component 110 facing the support component 130 is provided with the avoidance grooves 1105, and the avoidance grooves 1105 are opposite to the avoidance holes 1306 on the support component 130. After assembly is completed, the protrusion 142 passing through the avoidance holes 1306 is inserted into the avoidance grooves 1105. By providing the avoidance grooves 1105 for inserting the protrusion 142, on the one hand, in cooperation with the avoidance holes 1306, the structural compactness of the coil disk 100 can be further improved, the thickness of the coil disk 100 can be reduced, and convenient conditions can be provided for miniaturized design of the coil disk 100. On the other hand, by shortening the distance between the protrusion 142 and the coil 122, the effect of converging the magnetic field toward the avoidance region 1223 can be improved, thereby reducing the influence of structural blocking on magnetic field convergence.

[0219] As shown in FIG. 44, in some embodiments of the present application, in the axial direction of the coil 122, the distance between the coil 122 and the magnetic strip 144 is a first distance H4; and the first distance H4 is greater than or equal to 4 mm and less than or equal to 9 mm.

[0220] In this embodiment, in the axial direction of the coil 122, the distance between the coil 122 and the magnetic strip 144 is the first distance H4. The first distance H4 can be reduced by providing the above-mentioned avoidance holes 1306 and avoidance grooves 1105.

[0221] In an embodiment, the first distance H4 needs to be greater than or equal to 4 mm and less than or equal to 9 mm, and specifically may be controlled between 5 mm and 7 mm.

[0222] As shown in FIGS. 39 and 45, while ensuring the thickness and rigidity of the heat insulation component 110, reducing the first distance H4 can reduce the number of magnetic strips 144. For example, in this embodiment, when the thickness of the heat insulation component 110 is selected as 7 mm, the total number of magnetic strips 144 is 23. If the thickness of the heat insulation component 110 is reduced to 5 mm, the number of magnetic strips 144 can be reduced to 17.

[0223] Thus, it can be seen that reducing the first distance H4 is beneficial to reducing the cost and structural complexity of the coil disk 100.

[0224] In an embodiment, the material of the heat insulation component 110 may be a white carbon black mixture or another material having good thermal insulation performance, and needs to satisfy the requirement that a high-temperature winding can be inserted into it. To ensure that 3.5 mm winding pins can be inserted, if the heat insulation component 110 is made only of white carbon black, the thickness needs to be controlled at at least 12 mm or more. Now, by selecting a white carbon black mixture or another material with stronger thermal insulation performance to make the heat insulation component 110, the thickness can be controlled at 4 mm to 9 mm, to satisfy the above requirement for the first distance H4.

[0225] As shown in FIG. 35, in some embodiments of the present application, the heat insulation component 110 comprises a boss 1106, and the boss 1106 is located in the avoidance region 1223. The coil disk 100 further comprises a temperature sensor 150 provided at the boss 1106.

[0226] In this embodiment, the side of the heat insulation component 110 away from the magnetic component 140 is provided with the boss 1106, and the position of the boss 1106 overlaps the position of the avoidance region 1223. After assembly is completed, the coil 122 surrounds the avoidance region 1223.

[0227] On this basis, the temperature sensor 150 is provided at the boss 1106. The temperature sensor 150 can detect the temperature of the cooking utensil 200 above the coil disk 100, and then a controller can correspondingly adjust the power of the coil 122 according to the temperature, thereby ensuring that the current heating power matches the heating demand.

[0228] By providing the boss 1106, the temperature sensor 150 can be raised, so that the temperature sensor 150 and the coil 122 are staggered, which reduces interference of the coil 122 with the temperature sensor 150, and enables the temperature detected by the temperature sensor 150 to approach the actual temperature of the cooking utensil 200. This further achieves the technical effects of improving the detection accuracy of the temperature sensor 150 and improving the heating reliability of the coil disk 100.

[0229] As shown in FIGS. 19, 46, 47, and 48, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110 comprising the through hole 1107; a winding 120 wound on a first side of the heat insulation component 110 to form a coil 122, where the coil 122 can generate thermal radiation and an electromagnetic field after being energized; and an electrical connection assembly 160, at least partially provided on a second side of the heat insulation component 110. The electrical connection assembly 160 is connected to the winding 120 through the through hole 1107, or a part of the winding 120 extends through the through hole 1107 to the second side of the heat insulation component 110, and the electrical connection assembly 160 is connected to the winding 120 located on the second side of the heat insulation component 110.

[0230] In FIG. 19, arrow f indicates the transfer direction of thermal radiation from the coil 122.

[0231] In this embodiment, the heat insulation component 110 is provided with the through hole 1107, and the through hole 1107 communicate the first side and the second side of the heat insulation component 110. The coil disk 100 further comprises the electrical connection assembly 160, and the electrical connection assembly 160 is at least partially mounted on the second side of the heat insulation component 110. The electrical connection assembly 160 is configured to connect the winding 120 and a circuit board. The circuit board may supply power to the winding 120 through the electrical connection assembly 160, so that the energized coil 122 generates thermal radiation and an electromagnetic field.

[0232] In a first case, the electrical connection assembly 160 extends from the through hole 1107 to the first side of the heat insulation component 110 and is connected to the ends of the winding 120 on the first side of the heat insulation component 110, thereby forming an energized circuit. At this time, the routing of the winding 120 and the routing of the electrical connection assembly 160 do not interfere with each other, and the electrical connection assembly 160 located on the second side of the heat insulation component 110 can freely select, as required, the lead-out direction of the inner end 1204 or the outer end 1206 of the spirally wound winding 120.

[0233] In a second case, the ends of the winding 120 extend through the through hole 1107 to the second side of the heat insulation component 110, and the electrical connection assembly 160 is connected to the winding 120 passing through the through hole 1107 on the second side of the heat insulation component 110, thereby forming an energized circuit. The heating performance of the coil 122 is mainly affected by the winding shape on the first side of the heat insulation component 110. Similarly, in this case, the routing of the winding 120 on the first side of the heat insulation component 110 and the routing of the electrical connection assembly 160 on the second side of the heat insulation component 110 do not interfere with each other, and the electrical connection assembly 160 located on the second side of the heat insulation component 110 can freely select, as required, the lead-out direction of the inner end 1204 or the outer end 1206 of the spirally wound winding 120.

[0234] Thus, it can be seen that, by providing the through hole 1107 at the heat insulation component 110 and providing the electrical connection assembly 160 on the second side of the heat insulation component 110 in cooperation with the through hole 1107, the inner and outer ends of the winding 120 can be led out separately by the through hole 1107, which eliminates the possibility of routing interference between the electrical connection line and the winding 120, and solves the technical defect in the related art that the inner and outer ends 1206 of the winding 120 cannot be led out separately. This further achieves the technical effects of optimizing the lead-out structure of the coil disk 100 and reducing the electrical connection difficulty of the coil disk 100.

[0235] Specifically, the raw material of the winding 120 wound into the coil 122 is a high-temperature-resistant metal material, and the high-temperature-resistant metal material also has a relatively low linear expansion coefficient so as to avoid damage or deformation of the coil 122 at high temperature. Specifically, the coil 122 may be made of copper alloy or iron alloy.

[0236] Specifically, the material of the heat insulation component 110 may be a mixture of white carbon black and silicon carbide stone, or flexible vacuum silicon insulation cotton.

[0237] As shown in FIGS. 46, 48, and 50, in some embodiments of the present application, specifically, the coil disk 100 further comprises a support component 130. A first side of the support component 130 comprises an accommodation groove 1302, and the heat insulation component 110 and the coil 122 are provided in the accommodation groove 1302. The support component 130 comprises a via hole 1307, the via hole 1307 is opposite to the through hole 1107, and the electrical connection assembly 160 or the winding 120 passes through the through hole 1107 and the via hole 1307.

[0238] In this embodiment, the electrical connection assembly 160 is provided on the second side of the support component 130 away from the cooking utensil 200, and the support component 130 is located between the heat insulation component 110 and the electrical connection assembly 160. The support component 130 is provided with the via hole 1307. After assembly is completed, the via hole 1307 are opposite to the through hole 1107. The via hole 1307 and the through hole 1107 collectively provide communication between the first side of the heat insulation component 110 and the second side of the support component 130.

[0239] When electrically connecting the winding 120, the winding 120 may extend through the through hole 1107 and the via hole 1307 to the second side of the support component 130, and the electrical connection assembly 160 is connected to the ends of the winding 120 on the second side of the support component 130. Alternatively, the electrical connection assembly 160 may extend from the via hole 1307 and the through hole 1107 to the first side of the heat insulation component 110, and the electrical connection assembly 160 is connected to the ends of the winding 120 on the first side of the heat insulation component 110.

[0240] Thus, it can be seen that, by providing the via hole 1307, the electrical connection assembly 160 or the ends of the winding 120 can cross the support component 130 to complete electrical connection, so that the electrical connection assembly 160 can be arranged outside the support component 130 while satisfying the requirement for separate lead-out from both ends, thereby avoiding interference between the electrical connection assembly 160 and the support component 130. Further, the technical effects of optimizing the structural layout of the coil disk 100, improving the structural compactness of the coil disk 100, and facilitating miniaturized design of the coil disk 100 are achieved.

[0241] As shown in FIGS. 46 and 50, in some embodiments of the present application, specifically, the winding 120 is spirally wound on the first side of the heat insulation component 110; the winding 120 comprises an inner end 1204 and an outer end 1206; the through holes 1107 comprise a first through hole 11072 and a second through hole 11074; the electrical connection assembly 160 is connected to the inner end 1204 of the winding 120 through the first through hole 11072; and the electrical connection assembly 160 is connected to the outer end 1206 of the winding 120 through the second through hole 11074.

[0242] In this embodiment, the winding 120 is spirally wound on the first side of the heat insulation component 110 to form a spiral coil 122 capable of simultaneously generating thermal radiation and an electromagnetic field. The inner end 1204 of the coil 122 is located in a central region of the heat insulation component 110, and the outer end 1206 of the coil 122 is located in an edge region of the heat insulation component 110.

[0243] On this basis, the heat insulation component 110 is provided with the first through hole 11072 and the second through hole 11074. The first through hole 11072 is provided in the central region of the heat insulation component 110, and the electrical connection assembly 160 is connected to the inner end 1204 of the winding 120 through the first through hole 11072. The second through hole 11074 is provided in the edge region of the heat insulation component 110, and the electrical connection assembly 160 is connected to the outer end 1206 of the winding 120 through the second through hole 11074, thereby realizing independent lead-out of the inner and outer ends of the spiral coil 122.

[0244] Thus, it can be seen that, by respectively providing the first through hole 11072 and the second through hole 11074 for the inner and outer ends 1206 of the winding 120, nearby lead-out of the inner and outer ends 1206 of the winding 120 can be achieved, thereby shortening the lead-out distance between the ends of the winding 120 and the electrical connection assembly 160, improving the structural compactness of the coil disk 100, and providing convenient conditions for miniaturized and lightweight design of the coil disk 100.

[0245] As shown in FIGS. 47, 50, 51, and 52, in some embodiments of the present application, specifically, the electrical connection assembly 160 comprises: a wire 162 provided on the second side of the heat insulation component 110; a first terminal 164 passing through the through hole 1107 and the via hole 1307, where the first terminal 164 connects the winding 120 and a first end of the wire 162; and a second terminal 166 connected to a second end of the wire 162, where the second terminal 166 is configured to connect to a circuit board.

[0246] In this embodiment, the electrical connection assembly 160 comprises the wire 162, the first terminal 164, and the second terminal 166.

[0247] The wire 162 is arranged on the second side of the heat insulation component 110. The first terminal 164 is connected to the first end of the wire 162, and the second terminal 166 is connected to the second end of the wire 162. The wire 162 is connected to the winding 120 through the first terminal 164, and the wire 162 is connected to a power supply circuit on the circuit board through the second terminal 166. Specifically, the first terminal 164 may be inserted through the through hole 1107 and the via hole 1307 so as to connect the winding 120 on the first side of the heat insulation component 110, or the first terminal 164 may be fixed on the second side of the heat insulation component 110 and connected, through the first terminal 164, to the winding 120 extending through the through hole 1107 and the via hole 1307.

[0248] By providing the first terminal 164 and the second terminal 166, this structure achieves independent connection on both the winding 120 side and the circuit board side, so that the assembly step of the winding 120 and the electrical connection step can be performed independently, thereby achieving the technical effects of optimizing the structure of the electrical connection assembly 160, reducing the difficulty of electrical connection, and reducing the assembly complexity of the coil disk 100.

[0249] As shown in FIGS. 48, 50, and 53, in some embodiments of the present application, specifically, the wire 162 is at least partially attached to the second side of the support component 130, and the second terminal 166 is located on the peripheral side of the support component 130.

[0250] In this embodiment, the wire 162 is at least partially attached to the second side of the support component 130. The support component 130 can position and support the wire 162, thereby avoiding looseness or deformation of the wire 162 and improving the electrical connection reliability of the coil disk 100.

[0251] In this case, the second end of the wire 162 extends from the second side of the support component 130 to the peripheral side of the support component 130, to realize side lead-out of the coil disk 100 and avoid the wire 162 and the second terminal 166 occupying space on the second side of the support component 130, thereby reducing the thickness of the coil disk 100 and facilitating ultra-thin design of the coil disk 100 and the cooking device.

[0252] As shown in FIGS. 48 and 53, in some embodiments of the present application, specifically, the wire 162 comprises: a first wire 1622 connected to the inner end 1204 of the winding 120; and a second wire 1624 connected to the outer end 1206 of the winding 120. The first wire 1622 and the second wire 1624 are arranged side by side on the second side of the heat insulation component 110.

[0253] In this embodiment, the wire 162 comprises the first wire 1622 and the second wire 1624. The first wire 1622 is connected to the inner end 1204 of the winding 120 through the first terminal 164, and the first wire 1622 is connected to a power supply circuit on the circuit board through the second terminal 166. The second wire 1624 is connected to the outer end 1206 of the winding 120 through the first terminal 164, and the second terminal 166 is connected to a power supply circuit on the circuit board through the second terminal 166.

[0254] The first wire 1622 and the second wire 1624 are arranged side by side on the second side of the support component 130. Both the first wire 1622 and the second wire 1624 extend in the radial direction of the coil 122. The lead-out length of the first wire 1622 connected to the inner end 1204 of the winding 120 is longer, and the lead-out length of the second wire 1624 connected to the outer end 1206 of the winding 120 is shorter.

[0255] By means of the first wire 1622 and the second wire 1624, this structure realizes independent lead-out of the inner and outer ends 1206 of the winding 120. In addition, by arranging the first wire 1622 and the second wire 1624 side by side, the structural compactness of the electrical connection assembly 160 is improved, the space occupied by the electrical connection assembly 160 is reduced, and convenient conditions are provided for miniaturized and lightweight design of the coil disk 100.

[0256] As shown in FIGS. 48 and 49, in some embodiments of the present application, specifically, the second side of the support component 130 comprises a limit groove 1308, and the wire 162 is snap-fitted into the limit groove 1308.

[0257] In this embodiment, the second side of the support component 130 is provided with the limit groove 1308, and the shape and dimension of the limit groove 1308 are matched with those of the wire 162. Specifically, a wire clip and the limit groove 1308 may be integrally formed on the second side of the support component 130. During assembly, the wire 162 is pressed into the limit groove 1308 so that positioning and installation of the wire 162 on the second side of the support component 130 are completed, thereby reducing the possibility of misalignment or even detachment of the wire 162, and further achieving the technical effects of improving the positioning accuracy and positioning reliability of the wire 162 and improving the electrical connection reliability of the coil disk 100.

[0258] As shown in FIGS. 53 and 54, in some embodiments of the present application, specifically, the coil disk 100 further comprises a fixation member 170. The fixation member 170 is connected to the support component 130, and the wire 162 is clamped between the fixation member 170 and the support component 130.

[0259] In this embodiment, the coil disk 100 further comprises the fixation member 170. The fixation member 170 is provided on the second side of the support component 130 and connected to the support component 130. During assembly, the wire 162 is first placed at a predetermined installation position and preliminarily positioned by means of the limit groove 1308, and then the wire 162 is clamped at the support component 130 by means of the fixation member 170, to prevent the wire 162 from becoming misaligned or even detached on the support component 130.

[0260] Specifically, a single fixation member 170 may simultaneously fix the first wire 1622 and the second wire 1624 arranged side by side.

[0261] By providing the fixation member 170, the positioning accuracy of the wire 162 can be improved in cooperation with the limit groove 1308, thereby reducing the possibility of electrical connection failure caused by looseness and misalignment of the wire 162, further reducing the electrical connection failure rate of the coil disk 100, and improving the practicability and reliability of the coil disk 100.

[0262] In some embodiments of the present application, specifically, the winding 120 passes through the through hole 1107 and the via hole 1307; the winding 120 comprises a heating section and a connection section 1208. The heating section is spirally wound on the first side of the heat insulation component 110, and the connection section 1208 is connected to the electrical connection assembly 160 on the second side of the support component 130.

[0263] In this embodiment, the winding 120 passes through the through hole 1107 and the via hole 1307, and the inner end 1204 and the outer end 1206 of the winding 120 extend to the second side of the heat insulation component 110 through the through hole 1107 and the via hole 1307.

[0264] On this basis, the winding 120 comprises the heating section and the connection section 1208. The cross-sectional shape of the heating section is rectangular, and the heating section is wound on the first side of the heat insulation component 110 to form the coil 122.

[0265] The connection section 1208 is located on the second side of the heat insulation component 110, and extends toward the peripheral side of the heat insulation component 110. The electrical connection assembly 160 is connected to the connection section 1208 on the peripheral side of the heat insulation component 110.

[0266] In this structure, the connection section 1208 of the winding 120 directly serves as a lead-out structure. The electrical connection assembly 160 can complete the electrical connection operation between the inner and outer ends 1206 of the winding 120 and the connection section 1208 on the second side of the heat insulation component 110. This omits the steps of inserting the first terminal 164 into the through hole 1107, resistance-welding the first terminal 164, and arranging the wire 162 on the second side of the heat insulation component 110, reducing the connection difficulty between the electrical connection assembly 160 and the winding 120, and further achieving the technical effects of reducing the assembly difficulty and assembly complexity of the coil disk 100.

[0267] As shown in FIGS. 55 and 56, in some embodiments of the present application, specifically, the electrical connection assembly 160 further comprises a third terminal 168 connected to the connection section 1208.

[0268] In this embodiment, the electrical connection assembly 160 further comprises the third terminal 168. The third terminal 168 is connected to the connection section 1208 and is located on the peripheral side of the heat insulation component 110. The third terminal 168 is configured to connect to a power supply circuit on the circuit board.

[0269] Thus, it can be seen that, in this structure, assembly of the winding 120 and lead-out of the winding 120 can be completed simultaneously. Specifically, the heating section and the connection section 1208 can be formed on the heat insulation component 110 by split casting, and finally the assembly of the coil disk 100 can be completed simply by connecting the third terminal 168, thereby achieving the technical effects of reducing the structural complexity of the coil disk 100 and reducing the assembly difficulty of the coil disk 100.

[0270] As shown in FIGS. 55 and 56, in some embodiments of the present application, specifically, the connection section 1208 comprises a folded section 1209, and the folded section 1209 has a multilayer structure in the width direction of the winding 120.

[0271] In this embodiment, the connection section 1208 comprises the folded section 1209, and the folded section 1209 has a multilayer structure in the width direction of the winding 120. Specifically, the connection section 1208 can be obtained by transversely folding the strip-shaped winding 120.

[0272] The folded section 1209 formed by folding the winding 120 multiple times can increase the current-carrying capability of the connection section 1208, so that the connection section 1208 can satisfy the power supply requirement of the heating section, ensuring that the connection section 1208 can replace the function of the wire 162 and overcoming the current conduction limitation of directly using the winding 120 as the lead-out structure. Further, the technical effects of optimizing the structure of the winding 120, broadening the power range of the coil disk 100, and enhancing the heating performance of the coil disk 100 are achieved.

[0273] In some embodiments of the present application, specifically, the diameter of the through hole 1107 is a first diameter, and the first diameter is greater than or equal to 2.5 mm and less than or equal to 12.5 mm.

[0274] In this embodiment, the diameter of the through hole 1107 on the heat insulation component 110 is the first diameter. The first diameter needs to be greater than or equal to 2.5 mm and less than or equal to 12.5 mm.

[0275] By defining the first diameter as greater than or equal to 2.5 mm, it can be ensured that the width of the first terminal 164 or the winding 120 in the through hole 1107 can satisfy the overload current requirement, thereby ensuring that the conductive supply current matches the heating requirement.

[0276] By defining the first diameter as less than or equal to 12.5 mm, on the basis of meeting the power supply requirement, damage to the heat insulation component 110 caused by the through hole 1107 can be reduced, thereby ensuring that the heat insulation component 110 has sufficient rigidity, ensuring that the heat insulation component 110 can provide stable and effective support for the coil 122, and reducing the possibility of breakage of the heat insulation component 110.

[0277] Specifically, when the coil disk 100 is applied to an induction cooker, the first diameter is greater than or equal to 5 mm and less than or equal to 7 mm.

[0278] In some embodiments of the present application, specifically, the diameter of the via hole 1307 is a second diameter, and the second diameter is greater than the first diameter. The difference between the second diameter and the first diameter is greater than or equal to 2 mm.

[0279] In this embodiment, the diameter of the via hole 1307 on the heat insulation component 110 is the second diameter, and the second diameter is greater than the first diameter. Considering that the winding 120 or the first terminal 164 in the via hole 1307 may generate heat and that there may be installation deviation between the via hole 1307 and the through hole 1107 on the heat insulation component 110, the second diameter needs to be greater than the first diameter so as to realize heat dissipation through a gap formed by the size difference and compensate for assembly error through the size difference.

[0280] On this basis, by defining the difference between the second diameter and the first diameter as greater than or equal to 2 mm, damage to the support component 130 caused by the via hole 1307 can be reduced on the basis of meeting heat dissipation requirements and assembly error compensation requirements, thereby improving the structural strength of the support component 130 and reducing the failure rate of the support component 130.

[0281] As shown in FIGS. 48 and 53, in some embodiments of the present application, specifically, the coil disk 100 further comprises: a magnetic component 140 provided on the second side of the heat insulation component 110. The magnetic component 140 avoids the electrical connection assembly 160.

[0282] As shown in FIGS. 1, 2, 57, 58, 59, 60, and 61, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110; and a winding 120 provided at the heat insulation component 110. The winding 120 is spirally wound on the heat insulation component 110 to form a coil 122, and in the radial direction of the coil 122, the coil 122 comprises a plurality of layers. The distance between two adjacent layers is a radial spacing of the coil 122, and the coil 122 comprises a plurality of radial spacings. Among the plurality of radial spacings, at least one radial spacing is different from the other radial spacings.

[0283] In this embodiment, the spirally wound coil disk 100 comprises a plurality of layers in the radial direction, and the distance between two adjacent layers in the radial direction is the radial spacing of the coil 122 at that location. The radial spacing can reflect the density of winding of the coil 122 at that location.

[0284] The coil 122 comprises a plurality of radial spacings, and at least one radial spacing is different from the other radial spacings, that is, the size of the radial spacings can be changed according to requirements, and the winding density of the spiral winding of the coil 122 can be adjusted according to requirements.

[0285] By adjusting the winding density of the spiral winding of the coil 122, the heating capability of the coil disk 100 in different regions can be adjusted, thereby facilitating adjustment of the heating uniformity and heating range of the coil disk 100. For example, the radial spacing in an overheated region may be increased to make the winding 120 in the overheated region sparser, and correspondingly the radial spacing in a region with relatively poor heating capability may be decreased to make the winding 120 in that region denser. Further, the technical effects of optimizing the winding structure of the winding 120, improving the heating uniformity and heating reliability of the winding 120, and improving the quality of the cooked food are achieved.

[0286] Specifically, the electromagnetic heating capability and thermal-radiation heating capability of the coil disk 100 may be allocated by regulating the frequency of the driving current, to form various different heating modes.

[0287] Specifically, the winding 120 is made of a high-temperature-resistant metal material, and the winding 120 needs to withstand at least 600°C.

[0288] Specifically, the material of the heat insulation component 110 may be selected as white carbon black.

[0289] As shown in FIG. 57, in some embodiments of the present application, the winding 120 comprises a first segment 1224 and a second segment 1226 connected in series. The first segment 1224 comprises a plurality of first layers 12242, and the distance between two adjacent first layers 12242 is a first radial spacing X1, X3. The second segment 1226 comprises a plurality of second layers 12262, and the distance between two adjacent second layers 12262 is a second radial spacing X2. The second radial spacing X2 is greater than the first radial spacings X1 and X3.

[0290] In this embodiment, the winding 120 is divided into the first segment 1224 and the second segment 1226 according to the winding density of the winding 120. The first segment 1224 and the second segment 1226 are connected in series, and after spiral winding, the first segment 1224 and the second segment 1226 are distributed in a staggered manner in the radial direction of the coil 122.

[0291] Specifically, the first segment 1224 comprises a plurality of first layers 12242, and the distance between two adjacent first layers 12242 among the plurality of first layers 12242 is the first radial spacing X1, X3. The second segment 1226 comprises a plurality of second layers 12262, and the distance between two adjacent second layers 12262 among the plurality of second layers 12262 is the second radial spacing X2. The second radial spacing X2 is greater than the first radial spacings X1 and X3, that is, the winding 120 in the region where the first segment 1224 is located is wound more densely, and the winding 120 in the region where the second segment 1226 is located is wound more sparsely.

[0292] By dividing the coil 122 into the first segment 1224 and the second segment 1226 having different winding densities, the heating uniformity and heating range of the coil disk 100 can be adjusted, thereby achieving the technical effects of optimizing the winding structure of the winding 120, improving the heating uniformity and heating reliability of the winding 120, and improving the quality of the cooked food.

[0293] As shown in FIGS. 57, 58, 59, 60, and 61, in some embodiments of the present application, the number of first segments 1224 is N+1, the number of second segments 1226 is N, and N is an integer greater than or equal to 1. In the extension direction of the winding 120, the N+1 first segments 1224 and the N second segments 1226 are alternately connected in series.

[0294] In this embodiment, the winding 120 comprises N second segments 1226 and N+1 first segments 1224, and in the extension direction of the winding 120, the N+1 first segments 1224 and the N second segments 1226 are alternately connected in series. Specifically, both front and rear ends of the winding 120 are first segments 1224, and the second segments 1226 are interposed in the middle section of the winding 120.

[0295] By providing the first segments 1224 and the second segments 1226 alternately connected in series, the first segments 1224 and the second segments 1226 on the formed coil 122 can be uniformly distributed, thereby avoiding the electromagnetic heating function and infrared heating function being limited to a small-area region, and thus improving the heating uniformity of the coil disk 100.

[0296] Meanwhile, by arranging both ends of the winding 120 as the first segments 1224, the second segments 1226 can be located in the central region of the coil 122 and avoid the edge region, thereby ensuring that the second segments 1226 can concentratively heat the non-magnetically conductive cooking utensil 200 placed above the coil 122 and avoiding ineffective heating of the cooking utensil 200 by eccentrically located second segments 1226.

[0297] Specifically, N is an integer greater than or equal to 1. For example, one second segment 1226 and two first segments 1224 may be provided. Increasing N can increase the distribution levels of the first segments 1224 and the second segment 1226, to enhance heating uniformity.

[0298] Specifically, the winding 120 comprises two first segments 1224 and one second segment 1226, one first segment 1224 is located in the central region of the coil 122, another second segment 1226 is located in the edge region of the coil 122, and the second segment 1226 is located between the first segment 1224 and the second segment 1226.

[0299] The resonant electromagnetic heating of the spirally wound coil 122 will be concentrated in a region between 1 / 3 and 1 / 2 of the diameter of the coil 122. In this region, the winding 120 may be sparsely wound by providing the second segment 1226, to compensate for the concentration problem of electromagnetic heating.

[0300] As shown in FIG. 57, in some embodiments of the present application, the first segment 1224 and the second segment 1226 are wound along arcs.

[0301] In this embodiment, the first segment 1224 and the second segment 1226 are wound along arcs, and the axis of the arcs coincides with the axis of the coil 122 formed by winding. For example, the first segment 1224 and the second segment 1226 may be wound along a spiral line.

[0302] On this basis, by adjusting the curvature of the arcs, the winding density of the winding 120 can be correspondingly adjusted to form the first segment 1224 and the second segment 1226 having different densities.

[0303] By winding both the first segment 1224 and the second segment 1226 along arcs, the process complexity for forming the winding 120 can be reduced, to achieve the technical effect of reducing the manufacturing cost of the coil disk 100.

[0304] As shown in FIGS. 58, 59, and 60, in some embodiments of the present application, the first segment 1224 is wound along an arc; the second segment 1226 is wound along a broken line; and / or the second segment 1226 is wound along a wavy line.

[0305] In this embodiment, the first segment 1224 is wound along an arc, and the axis of the arc coincides with the axis of the coil 122 formed by winding. For example, the first segment 1224 may be wound along a spiral line. The second segment 1226 is wound along a broken line and / or a wavy line. Specifically, the second segment 1226 may be wound only along one of the broken line and the wavy line, or the first half of the second segment 1226 may be wound along a broken line and the second half thereof may be wound along a wavy line. No strict limitation is imposed thereon in this embodiment.

[0306] Compared with a relatively smooth arc, a wavy line and a broken line have a longer extension distance when wound through the same angle, thereby extending the transmission path of current in the second segment 1226 and correspondingly increasing the internal resistance of the second segment 1226. After energization, the first segment 1224 having a smaller internal resistance generates less heat and has a smaller amount of infrared radiation. Correspondingly, the electromagnetic field generated by the first segment 1224 is relatively stable and stronger. After energization, the second segment 1226 having a larger internal resistance generates more heat and has a larger amount of infrared radiation. Correspondingly, due to the shape change of the second segment 1226 caused by the wavy line or the broken line, the intensity of the generated electromagnetic field is lower.

[0307] Thus, it can be seen that, by defining the shape of the winding path of the winding 120, the allocation ratio between the electromagnetic heating capability and the infrared heating capability of different sections of the winding 120 can be adjusted. Specifically, more electromagnetic heating capability is allocated through an arcuate path, and more infrared heating capability is allocated through broken-line and wavy-line paths, so that the coil 122 can simultaneously satisfy the electromagnetic heating requirement of magnetically conductive cooking utensils 200 and the infrared heating requirement of non-magnetically conductive cooking utensils 200, thereby achieving the technical effects of optimizing the structure of the coil disk 100, broadening the heating functions of the coil disk 100, improving the practicability of the coil disk 100, and optimizing the user experience.

[0308] At the same time, the coil 122 wound along a broken line or a wavy line has relatively strong deformation resistance, which can reduce the possibility of local warping, toppling, or disengagement of the coil 122 during high-temperature heating.

[0309] Specifically, as shown in FIG. 58, one set of winding 120 may have multiple spiral combinations, and a wave shape may be provided at sparse-winding or dense-winding locations, to enhance anti-toppling performance and adjust the length of the winding 120 so as to further adjust impedance and inductive reactance, thereby improving the heating effect.

[0310] As shown in FIGS. 61, 62, 63, and 67, in some embodiments of the present application, the first segment 1224 is wound along a broken line, and / or the first segment 1224 is wound along a wavy line; and the second segment 1226 is wound along a broken line, and / or the second segment 1226 is wound along a wavy line.

[0311] In this embodiment, both the first segment 1224 and the second segment 1226 are wound along a wavy line or a broken line. They may be entirely wound along a wavy line, entirely wound along a broken line, or alternately wound along a wavy line and a broken line.

[0312] By superimposing sparse winding and dense winding on the basis that the entire coil 122 is provided with a multiple-wave effect, the length of the winding 120 can be effectively adjusted to adjust impedance and inductive reactance, while simultaneously achieving the effects of resonant heating and infrared heating. Further, this mechanism features superior manufacturing processes, anti-toppling protection, and balance adjustment of infrared and electromagnetic cold zones.

[0313] As shown in FIG. 64, when the winding 120 is arranged in a wavy shape, a local portion indicated by arrow k may form a triangular shape, thereby enhancing the anti-toppling effect of the winding 120.

[0314] As shown in FIGS. 58, 59, 60, and 61, in some embodiments of the present application, in the circumferential direction of the coil 122, the distance between two adjacent bent sections or the distance between two adjacent waves is a circumferential spacing of the coil 122; the first segment 1224 comprises a first circumferential spacing, the second segment 1226 comprises a second circumferential spacing, and the first circumferential spacing is greater than the second circumferential spacing.

[0315] In this embodiment, when the winding 120 is wound along a broken line or a wavy line, the coil 122 further comprises a circumferential spacing. Taking the example that the winding 120 is wound along a wavy line, the distance between adjacent crests and troughs in the circumferential direction of the coil 122 is the circumferential spacing. Taking the example that the winding 120 is wound along a broken line, the distance between adjacent broken-line segments in the circumferential direction of the coil 122 is the circumferential spacing. Different from the radial spacing, the circumferential spacing can reflect the density of the winding 120 in the circumferential direction.

[0316] On this basis, the first segment 1224 comprises a first circumferential spacing, and the second segment 1226 comprises a second circumferential spacing.

[0317] Specifically, as shown in FIG. 59, denser waves may be formed in the sparse-winding second segment 1226. The waves are not necessarily symmetrical about a central axis, but may be arranged to cover as much as possible the infrared cold zone caused by sparse winding, so that the effects of electromagnetic heating uniformity and non-attenuated infrared heating can be satisfied as much as possible.

[0318] As shown in FIG. 60, the sparse-winding second winding 126 may further be superimposed with small equally spaced waves, which not only maintains the original effect of the coil disk 100 shown in FIG. 59, but also improves the infrared heating effect by increasing the length of the winding 120. Furthermore, better mechanical performance is provided due to the superimposed equally spaced small waves.

[0319] As shown in FIG. 57, in some embodiments of the present application, the radial spacing is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0320] In this embodiment, X1, X2, and X3 in FIG. 57 respectively represent radial spacings of different segments. The radial spacing needs to be greater than or equal to 0.5 mm and less than or equal to 10 mm, and may specifically be selected to be greater than or equal to 2.5 mm and less than or equal to 5 mm. By defining the dimensional range of the radial spacing, on the one hand, the manufacturing process of the winding 120 can be simplified and production cost can be reduced; on the other hand, it is beneficial to improve the heating uniformity of the coil 122.

[0321] As shown in FIGS. 65 and 66, in some embodiments of the present application, in a center-line direction of the wavy line, the distance between two adjacent wave crests is the tooth pitch of the wavy line; the tooth pitch is greater than or equal to 1 mm and less than or equal to 15 mm.

[0322] In a direction perpendicular to the center line of the wavy line, the maximum distance between adjacent crests and troughs is the tooth height of the wavy line; the tooth height is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0323] In this embodiment, the height between the crest and the trough of the wavy line is the tooth height H5, and the distance between the first crest and the second crest is the tooth pitch L. H5 needs to be greater than or equal to 0.5 mm and less than or equal to 10 mm, and may specifically be selected to be greater than or equal to 1 mm and less than or equal to 2 mm. L needs to be greater than or equal to 1 mm and less than or equal to 15 mm, and may specifically be selected to be greater than or equal to 3.5 mm and less than or equal to 6.5 mm.

[0324] The values of the tooth height H5 and the tooth pitch L may be equal throughout the entire coil 122, or may gradually increase or alternate in size.

[0325] In an embodiment, the waves of the coil 122 are arranged in an equal manner, which is more compatible with low-cost production processes and provides better electrical performance. The principle is that the tooth pitch and center distance of the impeller used to press the wave are fixed, which allows more stable production. Equal wave shapes result in more balanced stress after heating, as reflected in better resistance to deformation after heating, more uniform heating area, and better heating uniformity.

[0326] Specifically, as shown in FIGS. 14 and 15, a local portion of the winding 120 may be arranged in a wavy shape or a broken-line shape. Specifically, a wavy shape may be provided at a turning portion, which can effectively reduce the heating toppling phenomenon caused by different inner and outer radii at the turn. It can also adjust the length of the winding 120 to adjust impedance and inductive reactance, thereby simultaneously achieving the effects of resonant heating and infrared heating.

[0327] As shown in FIG. 70, an embodiment of the present application provides a cooking device 300. The cooking device 300 comprises: a body 310; and the coil disk 100 according to any one of the above embodiments, provided at the body 310.

[0328] In this embodiment, the cooking device 300 provided with the coil disk 100 according to any one of the above embodiments is proposed. Therefore, the cooking device 300 has the advantages of the coil disk 100 according to any one of the above embodiments and can achieve the technical effects achievable by the coil disk 100 according to any one of the above embodiments. To avoid repetition, details are not repeated herein.

[0329] On this basis, the cooking device 300 further comprises the body 310. The body 310 is the main frame structure of the cooking device 300, and is configured to position, support, and protect other working structures on the cooking device 300. The coil disk 100 may be provided inside the body 310, or may be embedded at the top of the body 310, to heat the cooking utensil 200 placed on the cooking device 300 by means of the coil disk 100.

[0330] In the description of the present application, the term " a plurality of" refers to two or more. Unless otherwise expressly defined, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present application. The terms "connection, " "installation," and "fixation" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in the present application based on the specific circumstances.

[0331] In the description of the present application, the terms "an embodiment, " "some embodiments," and "specific embodiment" etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is comprised in at least one embodiment or example of the present application. In the present application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0332] The above descriptions are some embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations may be made to the present application. Any modification, equivalent replacement, improvement, and the like made within the spirit and principles of the present application shall fall within the scope of the present application.

Examples

Embodiment Construction

[0073]To enable a clearer understanding of the above objectives, features, and advantages of the present application, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, insofar as there is no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0074]Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0075]A coil disk and a cooking device according to some embodiments of the present application are described below with reference to FIGS. 1 to 70.

[0076]As shown in FIGS. 1, 2, 5, and 19, an embodiment of the pres...

[0001] The present application claims priority to Chinese Patent Application No. 202311614489.7, filed on November 29, 2023, Chinese Patent Application No. 202420631685.9, filed on March 29, 2024, Chinese Patent Application No. 202420631876.5, filed on March 29, 2024, Chinese Patent Application No. 202420631791.7, filed on March 29, 2024, and Chinese Patent Application No. 202421241772.X, filed on May 31, 2024. The entire contents of the above applications are incorporated herein by reference.TECHNICAL FIELD

[0002] The present application relates to the technical field of cooking devices, and in particular, to a coil disk and a cooking device.BACKGROUND

[0003] In the related art, induction heating appliances such as induction cookers use flameless heating and feature high heating speed and high safety. However, induction heating appliances have poor compatibility with cookware materials and shapes. For example, relatively good heating power and heating effects can be achieved for metal cookware with high magnetic permeability, while cookware with low magnetic permeability, such as non-metal cookware, cannot be heated.

[0004] To solve the above problem, related technologies have proposed hybrid heating, namely, additionally providing a resistance-type electric heating wire on the basis of the original induction coil, so that the electric heating wire generates heat when induction heating cannot be used. However, such products require an additional electric heating wire coil, resulting in relatively high cost. Therefore, how to overcome the above technical defects has become an urgent technical problem to be solved.SUMMARY

[0005] The present application is intended to solve at least one of the technical problems existing in the related art or related technologies.

[0006] To this end, a first aspect of the present application provides a coil disk.

[0007] A second aspect of the present application provides a cooking device.

[0008] In view of this, the first aspect of the present application provides a coil disk, comprising: a heat insulation component; a winding provided at the heat insulation component, where the winding is strip-shaped, the winding is spirally wound on the heat insulation component to form a coil, the coil, when energized, is capable of generating an electromagnetic field and thermal radiation.

[0009] The present application defines a coil disk with both electromagnetic heating and thermal radiation heating functions. The coil disk comprises a heat insulation component and a winding, and the winding is spirally wound around the heat insulation component. On the one hand, the heat insulation component provides positioning and support for the winding; on the other hand, the heat insulation component has excellent heat insulation performance and can prevent the heat transferred from the winding from diffusing to the outside of the heat insulation component.

[0010] Based on this, the winding is in the shape of a strip, and the strip winding is spirally wound on the heat insulation component to form a spiral coil on the heat insulation component. When the spiral coil is energized, it can generate an electromagnetic field above it. At the same time, due to the existence of a certain internal resistance of the coil, the energized coil can also generate thermal radiation.

[0011] The intensity of the electromagnetic field and thermal radiation generated by the coil can be distributed by changing the frequency of the power supply current to the coil. Specifically, when a high-frequency current is passed through the coil, the coil not only generates an electromagnetic field, but also generates heat due to its own impedance. Specifically, as the frequency of the alternating current flowing through the coil increases, the coil's impedance also increases. As the coil's impedance increases, the heat generated when the current passes through the coil also increases, thus enabling the coil to generate sufficient heat. This heat is then transferred to the cooking appliance to heat it.

[0012] During operation, if a magnetic cooking appliance is placed above the coil, the appliance will resonate in the electromagnetic field and generate eddy currents. Under the influence of the eddy currents, the appliance will gradually heat up, allowing food to be cooked through the high temperature. At the same time, the heat radiation generated by the coil can also provide auxiliary heating to the appliance, thereby increasing the heating power.

[0013] If a non-magnetic cooking appliance is placed above the coil, although the appliance cannot generate eddy currents through resonance in the electromagnetic field, the thermal radiation generated by the coil can directly heat the appliance, thus cooking the food through the high temperature of the appliance. Furthermore, because the coil generates a large amount of thermal radiation, the actual heating effect of the coil on the appliance will not be affected by the movement of the appliance when the user tosses the food in the pan, thereby simulating the effect of open flame cooking.

[0014] Therefore, the coil specified in the present application possesses both electromagnetic heating and thermal radiation heating capabilities. When the cooking appliance is a metal appliance or other cooking appliance with high magnetic permeability, it heats up by generating eddy currents within the appliance through traditional induction heating. When the cooking appliance is a non-metallic appliance or other cooking appliance without high magnetic permeability, a higher oscillation frequency is used to increase the coil's impedance based on the skin effect. This increased impedance heats the coil, which then heats the cooking appliance. Thus, without altering the original hardware structure of the induction heating cooking appliance, it enables the heating of non-metallic appliances, improving its versatility and solving the high-cost technical problem in the related art. This achieves the technical effects of optimizing the coil structure, broadening its application range, improving its practicality, and reducing its production cost.

[0015] By setting the windings to a strip shape, the contact area between the windings and the air can be increased, thereby enhancing the thermal radiation heating capability of the coil while retaining the electromagnetic heating capability.

[0016] Based on this, the wound winding, after processing, takes on a spiral shape. During the assembly of the coil, the winding is fixed by connecting the heat insulation component and a portion of the winding through a connection mechanism. Compared to enameled wire winding, the processed spiral winding does not require support from a spiral bracket; it can maintain its spiral shape on its own, requiring only a few dispersed contact points for fixation. Therefore, by selecting a processed spiral winding, the contact area between the winding and the heat insulation component can be reduced, thereby decreasing the heat transfer rate between them and ultimately lowering the temperature of the heat insulation component during operation.

[0017] Specifically, the electromagnetic heating capability and thermal radiation heating capability of the coil can be distributed by adjusting the frequency of the driving current to form a variety of different heating modes.

[0018] Specifically, the winding are made of a high-temperature-resistant metal material, and the winding is required to withstand at least 600°C.

[0019] Specifically, the material of the heat insulation component can be selected as white carbon black.

[0020] In addition, the coil disk provided in the present application may also have the following additional technical features.

[0021] In some technical solutions of the present application, the winding comprises: a first winding, where the first winding has a first thickness in the axial direction of the coil and a first width in the radial direction of the coil; the first width is greater than the first thickness; the ratio of the first width to the first thickness is greater than or equal to 2.

[0022] In some technical solutions of the present application, the winding further comprises: a second winding, where the second winding has a second thickness in the axial direction of the coil and a second width in the radial direction of the coil; the second thickness is greater than the second width; and the ratio of the second thickness to the second width is greater than or equal to 2.

[0023] In some technical solutions of the present application, a cross-sectional shape of the winding comprises: a rectangle, a trapezoid, a parallelogram, or an ellipse.

[0024] In some technical solutions of the present application, the coil comprises a plurality of layers in the radial direction, and the plurality of layers are circular or elliptical.

[0025] In some technical solutions of the present application, the coil comprises a plurality of layers in the radial direction, and the plurality of layers are polygonal.

[0026] In some technical solutions of the present application, the winding is a metal winding; the melting point of the metal winding is greater than or equal to 600°C.

[0027] In some technical solutions of the present application, the coil disk further comprises: a support component connected to the heat insulation component; and a magnetic component provided between the support component and the heat insulation component.

[0028] In some technical solutions of the present application, the heat insulation component comprises: a first heat insulation component, where a coil is provided on a first side of the first heat insulation component, and a magnetic component is provided on a second side of the first heat insulation component away from the coil; a second heat insulation component, at least partially located between the first heat insulation component and the magnetic component, where the first heat insulation component and the second heat insulation component are made of different materials; the first side of the support component comprises an accommodation groove, the coil and the first heat insulation component are provided in the accommodation groove, and the magnetic component is provided on the second side of the support component.

[0029] In some technical solutions of the present application, the second heat insulation component is located between the first heat insulation component and the magnetic component; the second heat insulation component is provided between the first heat insulation component and the support component.

[0030] In some technical solutions of the present application, the second heat insulation component wraps the magnetic component.

[0031] In some technical solutions of the present application, the thickness of the first heat insulation component is greater than or equal to 4 mm and less than or equal to 9 mm.

[0032] In some technical solutions of the present application, the first heat insulation component comprises a slot, and the coil is partially inserted into the slot; a depth of the slot is greater than or equal to 3 mm and less than or equal to 4mm.

[0033] In some technical solutions of the present application, between the first heat insulation component and the magnetic component, a thickness of the second heat insulation component is greater than or equal to 1 mm and less than or equal to 5 mm.

[0034] In some technical solutions of the present application, the first side of the first heat insulation component comprises a rib, and the rib and the coil are arranged in a staggered manner.

[0035] In some technical solutions of the present application, a center of the coil comprises an avoidance region; a protrusion is provided on a side of the magnetic component facing the heat insulation component.

[0036] In some technical solutions of the present application, the protrusion is annular; the protrusion and the coil share a common axis.

[0037] In some technical solutions of the present application, a plurality of protrusions are provided, and the plurality of protrusions are spaced apart in the radial direction of the coil.

[0038] In some technical solutions of the present application, among the plurality of protrusions, at least one protrusion is opposite to the avoidance region; and / or among the plurality of protrusions, at least one protrusion is located on a peripheral side of the avoidance region.

[0039] In some technical solutions of the present application, the magnetic component comprises: a plurality of magnetic strips provided at the heat insulation component, where the plurality of magnetic strips extend in the radial direction of the coil, and the plurality of magnetic strips are spaced apart in the circumferential direction of the coil; a first rib provided on the side of the plurality of magnetic strips facing the heat insulation component, where each magnetic strip comprises at least one first rib, and the first ribs on the plurality of magnetic strips are combined to form an annular protrusion.

[0040] In some technical solutions of the present application, the magnetic component comprises a plurality of arrays, and each array comprises a plurality of magnetic strips; the plurality of magnetic strips belonging to the same array are distributed in a fan-shaped region.

[0041] In some technical solutions of the present application, each array comprises: a first magnetic strip, where a first rib is provided at both the inner end and the outer end of the first magnetic strip in the radial direction of the coil; and a second magnetic strip, where the length of the second magnetic strip is less than the length of the first magnetic strip, and a first rib is provided at the outer end of the second magnetic strip in the radial direction of the coil.

[0042] In some technical solutions of the present application, the magnetic component comprises: a plurality of magnetic sheets, where the magnetic sheet is fan-shaped, and the plurality of magnetic sheets are distributed in the circumferential direction of the coil; a second rib, provided on the side of the plurality of magnetic sheets facing the heat insulation component, where each magnetic sheet comprises at least one second rib, and the second ribs on the plurality of magnetic sheets are combined to form an annular protrusion.

[0043] In some technical solutions of the present application, the second side of the support component comprises an installation groove, and the magnetic component is provided in the installation groove; the support component further comprises an avoidance hole, and the protrusion partially passes through the avoidance hole.

[0044] In some technical solutions of the present application, the second side of the heat insulation component comprises an avoidance groove, and the protrusion is partially located in the avoidance groove.

[0045] In some technical solutions of the present application, the distance between the coil and the magnetic strip in the axial direction of the coil is a first distance; the first distance is greater than or equal to 4 mm and less than or equal to 9 mm.

[0046] In some technical solutions of the present application, the heat insulation component comprises a boss located in the avoidance region, and the coil further comprises a temperature sensor provided at the boss.

[0047] In some technical solutions of the present application, the heat insulation component comprises a through hole, and the winding is wound on the first side of the heat insulation component to form a coil; an electrical connection assembly is at least partially provided on the second side of the heat insulation component; the electrical connection assembly is connected to the winding through the through hole, or the winding partially extends to the second side of the heat insulation component through the through hole, and the electrical connection assembly is connected to the winding located on the second side of the heat insulation component; the support component comprises a via hole, the via hole is opposite to the through hole, and the electrical connection assembly or the winding passes through the through hole and the via hole.

[0048] In some technical solutions of the present application, the winding is spirally wound on the first side of the heat insulation component; the winding comprises an inner end and an outer end, the through hole comprises a first through hole and a second through hole, the electrical connection assembly is connected to the inner end of the winding through the first through hole, and the electrical connection assembly is connected to the outer end of the winding through the second through hole.

[0049] In some technical solutions of the present application, the electrical connection assembly comprises: a wire provided on the second side of the heat insulation component; a first terminal passing through the through hole and the via hole, and connecting the winding and the first end of the wire; and a second terminal connected to the second end of the wire, and configured to be connected to a circuit board.

[0050] In some technical solutions of the present application, the wire is at least partially attached to the second side of the support component, and the second terminal is located on the peripheral side of the support component.

[0051] In some technical solutions of the present application, the wire comprises: a first wire connected to the inner end of the winding; and a second wire connected to the outer end of the winding; where the first wire and the second wire are arranged side by side on the second side of the heat insulation component.

[0052] In some technical solutions of the present application, the second side of the support component comprises a limit groove, and the wire is snapped into the limit groove.

[0053] In some technical solutions of the present application, the coil disk further comprises: a fixation member connected to the support component, and a wire is clamped between the fixation member and the support component.

[0054] In some technical solutions of the present application, the winding passes through the through hole and the via hole; the winding comprises a heating section and a connection section, the heating section is spirally wound on the first side of the heat insulation component, and the connection section is connected to the electrical connection assembly on the second side of the support component.

[0055] In some technical solutions of the present application, the electrical connection assembly further comprises a third terminal connected to the connection section.

[0056] In some technical solutions of the present application, the connection section comprises a folded section, and the folded section has a multi-layered structure in the width direction of the winding.

[0057] In some technical solutions of the present application, the diameter of the through hole is a first diameter, and the first diameter is greater than or equal to 2.5 mm and less than or equal to 12.5 mm.

[0058] In some technical solutions of the present application, the diameter of the via hole is a second diameter, and the second diameter is larger than the first diameter; the difference between the second diameter and the first diameter is greater than or equal to 2 mm.

[0059] In some technical solutions of the present application, the coil comprises a plurality of layers in the radial direction; the distance between two adjacent layers is the radial spacing of the coil, and the coil comprises a plurality of radial spacings; among the plurality of radial spacings, at least one radial spacing is different from the other radial spacings.

[0060] In some technical solutions of the present application, the winding comprises a first segment and a second segment connected in series; the first segment comprises a plurality of first layers, and the distance between two adjacent first layers is a first radial spacing; the second segment comprises a plurality of second layers, and the distance between two adjacent second layers is a second radial spacing; the second radial spacing is greater than the first radial spacing.

[0061] In some technical solutions of the present application, the number of first segments is N+1, the number of second segments is N, and N is an integer greater than or equal to 1; in the extension direction of the winding, N+1 first segments and N second segments are alternately connected in series.

[0062] In some technical solutions of the present application, the first segment and the second segment are wound along an arc.

[0063] In some technical solutions of the present application, the first segment is wound along an arc; the second segment is wound along a broken line; and / or the second segment is wound along a wavy line.

[0064] In some technical solutions of the present application, the first segment is wound along a broken line and / or a wavy line; the second segment is wound along a broken line and / or a wavy line.

[0065] In some technical solutions of the present application, in the circumferential direction of the coil, the distance between two adjacent bent segments or the distance between two adjacent waves is the circumferential spacing of the coil; the first segment comprises a first circumferential spacing, the second segment comprises a second circumferential spacing, and the first circumferential spacing is greater than the second circumferential spacing.

[0066] In some technical solutions of the present application, the radial spacing is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0067] In some technical solutions of the present application, the distance between two adjacent wave crests in the centerline direction of the wavy line is the tooth pitch of the wavy line; the tooth pitch is greater than or equal to 1 mm and less than or equal to 15 mm.

[0068] In some technical solutions of the present application, in the direction perpendicular to the center line of the wavy line, a maximum value of a distance between adjacent wave crests and wave troughs is the tooth height of the wavy line; the tooth height is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0069] A second aspect of the present application provides a cooking device, comprising: a body; and the coil disk according to any one of the above technical solutions, where the coil disk is provided at the body.

[0070] Additional aspects and advantages of the present application will become apparent in the following description, or may be learned through practice of the present application.BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments taken in conjunction with the accompanying drawings. FIG. 1 is an exploded view of a coil disk according to an embodiment of the present application. FIG. 2 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 3 is a schematic structural view of a coil according to an embodiment of the present application. FIG. 4 is a partial enlarged view of the coil in region A in the embodiment shown in FIG. 3. FIG. 5 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 6 is a partial enlarged view of the coil in region B in the embodiment shown in FIG. 5. FIG. 7 is a cross-sectional view of a winding according to an embodiment of the present application. FIG. 8 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 9 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 10 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 11 is a cross-sectional view of the winding according to an embodiment of the present application. FIG. 12 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 13 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 14 is a schematic structural view of the coil according to an embodiment of the present application. FIG. 15 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 16 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 17 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 18 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 19 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 20 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 21 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 22 is a cross-sectional view of the coil disk in the embodiment shown in FIG. 21 along line C-C. FIG. 23 is a schematic structural view of a first heat insulation component according to an embodiment of the present application. FIG. 24 is a schematic structural view of the first heat insulation component according to an embodiment of the present application. FIG. 25 is a schematic structural view of a second heat insulation component according to an embodiment of the present application. FIG. 26 is a cross-sectional view of the second heat insulation component in the embodiment shown in FIG. 25 along line D-D. FIG. 27 is a partial enlarged view of the coil disk in region E in the embodiment shown in FIG. 26. FIG. 28 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 29 is a cross-sectional view of the coil disk in the embodiment shown in FIG. 28 along line F-F. FIG. 30 is a partial enlarged view of the coil disk in region G in the embodiment shown in FIG. 29. FIG. 31 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 32 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 33 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 34 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 35 is an exploded view of the coil disk according to an embodiment of the present application. FIG. 36 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 37 is a schematic structural view of a coil disk according to an embodiment of the present application. FIG. 38 is a schematic structural view of an array according to an embodiment of the present application. FIG. 39 is a schematic structural view of a magnetic component according to an embodiment of the present application. FIG. 40 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 41 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 42 is a schematic structural view of a magnetic sheet according to an embodiment of the present application. FIG. 43 is a schematic structural view of the magnetic component according to an embodiment of the present application. FIG. 44 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 45 is a schematic structural view of the magnetic component according to an embodiment of the present application. FIG. 46 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 47 is a schematic structural view of an electrical connection assembly according to an embodiment of the present application. FIG. 48 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 49 is a partial enlarged view of the coil disk in region H in the embodiment shown in FIG. 48. FIG. 50 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 51 is a partial enlarged view of the coil disk in region I in the embodiment shown in FIG. 50. FIG. 52 is a partial enlarged view of the coil disk in region J in the embodiment shown in FIG. 50. FIG. 53 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 54 is a partial enlarged view of the coil disk in region K in the embodiment shown in FIG. 53. FIG. 55 is a schematic structural view of the electrical connection assembly according to an embodiment of the present application. FIG. 56 is a partial enlarged view of the electrical connection assembly in region L in the embodiment shown in FIG. 55. FIG. 57 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 58 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 59 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 60 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 61 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 62 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 63 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 64 is a partial enlarged view of the coil disk in region M in the embodiment shown in FIG. 63. FIG. 65 is a schematic structural view of the winding according to an embodiment of the present application. FIG. 66 is a partial enlarged view of the winding in region N in the embodiment shown in FIG. 65. FIG. 67 is a schematic structural view of the winding according to an embodiment of the present application. FIG. 68 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 69 is a schematic structural view of the coil disk according to an embodiment of the present application. FIG. 70 is a schematic structural view of a cooking device according to an embodiment of the present application. Description of reference signs:

[0072] 100 coil disk; 110 heat insulation component; 1102 first heat insulation component; 11022 slot; 11024 rib; 1104 second heat insulation component; 1105 avoidance groove; 1106 boss; 1107 through hole; 11072 first through hole; 11074 second through hole; 120 winding; 1204 inner end; 1206 outer end; 1208 connection section; 1209 folded section; 122 coil; 1222 layer; 1223 avoidance region; 1224 first segment; 12242 first layer; 1226 second segment; 12262 second layer; 124 first winding; 126 second winding; 130 support component; 1302 accommodation groove; 1304 installation groove; 1306 avoidance hole; 1307 via hole; 1308 limit groove; 140 magnetic component; 142 protrusion; 1422 first rib; 1424 second rib; 144 magnetic strip; 1442 array; 1444 first magnetic strip; 1446 second magnetic strip; 146 magnetic sheet; 150 temperature sensor; 160 electrical connection assembly; 162 wire; 1622 first wire; 1624 second wire; 164 first terminal; 166 second terminal; 168 third terminal; 170 fixation member; 200 cooking utensil; 300 cooking device; 310 bodyDETAILED DESCRIPTION

[0073] To enable a clearer understanding of the above objectives, features, and advantages of the present application, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, insofar as there is no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0074] Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0075] A coil disk and a cooking device according to some embodiments of the present application are described below with reference to FIGS. 1 to 70.

[0076] As shown in FIGS. 1, 2, 5, and 19, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110; and a winding 120 provided at the heat insulation component 110. The winding 120 is strip-shaped, and is spirally wound on the heat insulation component 110 to form a coil 122. When energized, the coil 122 can generate an electromagnetic field and thermal radiation.

[0077] The present application provides a coil disk 100 having both electromagnetic heating and thermal-radiation heating functions. The coil disk 100 comprises a heat insulation component 110 and a winding 120. The winding 120 is spirally wound on the heat insulation component 110. On the one hand, the heat insulation component 110 can position and support the winding 120; on the other hand, the heat insulation component 110 has excellent thermal insulation performance and can prevent heat transferred from the winding 120 from diffusing to outside of the heat insulation component 110.

[0078] On this basis, the winding 120 is strip-shaped, and the strip-shaped winding 120 is spirally wound on the heat insulation component 110 to form a spiral coil 122 on the heat insulation component 110. After the spiral coil 122 is energized, it can generate an electromagnetic field above it. At the same time, because the coil 122 has a certain internal resistance, the energized coil 122 can also simultaneously generate thermal radiation.

[0079] The intensity of the electromagnetic field and the intensity of the thermal radiation generated by the coil 122 may be allocated by changing the frequency of the supply current of the coil 122. Specifically, after a high-frequency current is applied to the coil 122, the coil 122 can not only generate an electromagnetic field, but also generate heat due to its own impedance. Specifically, when the frequency of the alternating current applied to the coil 122 increases, the impedance of the coil 122 also increases accordingly. After the impedance of the coil 122 is increased, the heat generated when current passes through the coil 122 also increases accordingly. Therefore, the coil 122 itself can generate sufficient heat, and this heat is transferred to the cooking utensil 200 to heat the cooking utensil 200.

[0080] During operation, if a magnetically conductive cooking utensil 200 is placed above the coil disk 100, the magnetically conductive cooking utensil 200 resonates in the electromagnetic field and generates eddy currents. Under the action of the eddy currents, the magnetically conductive cooking utensil 200 is gradually heated up, so that food is cooked by the high-temperature magnetically conductive cooking utensil 200. Meanwhile, the thermal radiation generated by the coil 122 can also provide auxiliary heating for the magnetically conductive cooking utensil 200 to increase the heating power.

[0081] If a non-magnetically conductive cooking utensil 200 is placed above the coil disk 100, although the non-magnetically conductive cooking utensil 200 cannot generate eddy currents by resonance in the electromagnetic field, the thermal radiation generated by the coil 122 can directly heat the non-magnetically conductive cooking utensil 200, so that food is cooked by the high-temperature non-magnetically conductive cooking utensil 200. In addition, because the coil 122 generates a large amount of thermal radiation, when a user tosses the pan, the actual heating effect of the coil disk 100 on the cooking utensil 200 will not be affected by positional displacement of the cooking utensil 200, thereby simulating the effect of open-flame cooking.

[0082] Thus, it can be seen that the coil disk 100 defined in the present application has both electromagnetic heating capability and thermal-radiation heating capability. When the cooking utensil 200 is a cooking utensil 200 having relatively high magnetic permeability, such as a metal cooking utensil 200, the cooking utensil 200 is heated by forming an eddy current therein through conventional induction heating. When the cooking utensil 200 is a cooking utensil 200 without relatively high magnetic permeability, such as a non-metal cooking utensil 200, the coil 122 itself is heated by increasing its own impedance based on the skin effect of the coil 122 through a higher oscillation frequency, and the cooking utensil 200 is heated by the heat generated by the heated coil 122. Accordingly, without changing the original hardware structure of the induction-heated cooking utensil 200, the induction-heated cooking utensil 200 can also heat a non-metal cooking utensil 200, thereby improving the versatility of the induction-heated cooking utensil 200 and solving the high-cost technical problem existing in the related art. Further, the technical effects of optimizing the structure of the coil disk 100, broadening the application range of the coil disk 100, improving the practicability of the coil disk 100, and reducing the manufacturing cost of the coil disk 100 are achieved.

[0083] By arranging the winding 120 as strip-shaped, the contact area between the winding 120 and air can be increased, thereby enhancing the thermal-radiation heating capability of the coil disk 100 while retaining the electromagnetic heating capability.

[0084] On this basis, after processing is completed, the winding 120 is in a spiral shape. During assembly of the coil disk 100, the winding 120 can be fixed by connecting the heat insulation component 110 and partial regions of the winding 120 through a connection mechanism. Compared with an enameled-wire winding process, the processed spiral winding 120 does not require support from a spiral bracket, and it can maintain its spiral shape by itself. Only several discrete contact points are needed to fix the winding 120. Therefore, by selecting a processed spiral winding 120, the contact area between the winding 120 and the heat insulation component 110 can be reduced, correspondingly reducing the heat transfer rate between the winding 120 and the heat insulation component 110, thereby lowering the temperature of the heat insulation component 110 during operation.

[0085] Specifically, the electromagnetic heating capability and thermal-radiation heating capability of the coil disk 100 may be allocated by regulating the frequency of the driving current to form various different heating modes.

[0086] Specifically, the winding 120 is made of a high-temperature-resistant metal material, and the winding 120 is required to withstand at least 600°C.

[0087] Specifically, the material of the heat insulation component 110 may be selected as white carbon black.

[0088] As shown in FIGS. 3 and 4, in some embodiments of the present application, the winding 120 comprises: a first winding 124. A dimension of the first winding 124 in the axial direction of the coil 122 is a first thickness T1, and a dimension of the first winding 124 in the radial direction of the coil 122 is a first width W1. The first width W1 is greater than the first thickness T1, and a ratio of the first width W1 to the first thickness T1 is greater than or equal to 2.

[0089] In FIG. 3, arrow a indicates the axial direction of the coil 122, and arrow b indicates the radial direction of the coil 122.

[0090] In this embodiment, the winding 120 comprises the first winding 124. The first winding 124 is formed into a spiral first winding 124 from a sheet-like base material. Specifically, by cutting the first winding 124 with a plane perpendicular to the extension path of the first winding 124, a first cross section can be obtained. The dimension of the first cross section in the axial direction of the coil 122 is the first thickness T1, and the dimension in the radial direction of the coil 122 is the first width W1, where the first width W1 is greater than the first thickness T1. During assembly, the sheet-like first winding 124 can simply be laid flat on the heat insulation component 110.

[0091] By defining the width of the first winding 124 to be greater than its thickness, the first winding 124 can have relatively strong deformation resistance in the radial direction while maintaining the strip-shaped form of the winding 120, so that the first winding 124 on the heat insulation component 110 can maintain a spiral shape without the aid of other structures, thereby preventing the heating effect of the coil disk 100 from being affected by uncontrollable deformation of the first winding 124. Accordingly, the technical effects of improving the structural strength of the first winding 124 and improving the heating reliability of the coil disk 100 are achieved.

[0092] The ratio of the first width W1 to the first thickness T1 is greater than or equal to 2, to ensure that the first winding 124 has a sufficiently large broad side area, thereby increasing the amount of thermal radiation from the first winding 124.

[0093] Specifically, the sheet-like base material may be machined into the spiral first winding 124 by a mechanical processing process, for example by wire cutting, laser cutting, punching, or the like.

[0094] The sheet-like base material may also be chemically etched into a spiral shape by an etching solution.

[0095] Specifically, the range of the first thickness T1 is greater than or equal to 0.1 mm and less than or equal to 10 mm.

[0096] In this embodiment, the value range of the first thickness T1 of the first winding 124 is defined.

[0097] Specifically, by defining the first thickness T1 as greater than or equal to 0.1 mm, it can be ensured that the first winding 124 has a certain bending resistance in the axial direction, thereby reducing the possibility that the first winding 124 warps upward or even breaks.

[0098] By defining the first thickness T1 as less than or equal to 10 mm, the internal resistance of the first winding 124 can be limited by limiting the cross-sectional area, thereby accurately allocating the electromagnetic heating capability and the thermal-radiation heating capability of the first winding 124 and avoiding excessive encroachment of the thermal-radiation heating capability on the electromagnetic heating capability.

[0099] Specifically, the first thickness T1 is selected to be above 1 mm.

[0100] As shown in FIGS. 5 and 6, in some embodiments of the present application, the winding 120 further comprises a second winding 126. A dimension of the second winding 126 in the axial direction of the coil 122 is a second thickness T2, and a dimension of the second winding 126 in the radial direction of the coil 122 is a second width W2. The second thickness T2 is greater than the second width W2, and a ratio of the second thickness T2 to the second width W2 is greater than or equal to 2.

[0101] In FIG. 5, arrow a indicates the axial direction of the coil 122, and arrow b indicates the radial direction of the coil 122.

[0102] In this embodiment, the winding 120 comprises the second winding 126. The second winding 126 is wound into a spiral shape from a strip-shaped base material.

[0103] Specifically, by cutting the second winding 126 with a plane perpendicular to the extension path of the second winding 126, a second cross section can be obtained. The dimension of the second cross section in the axial direction of the coil 122 is the second thickness T2, and the dimension of the second cross section in the radial direction of the coil 122 is the second width W2, where the second width W2 is smaller than the second thickness T2. After assembly is completed, the broad sides of the strip-shaped second winding 126 define the gaps between layers 1222, and the narrow side of the strip-shaped second winding 126 contacts the heat insulation component 110.

[0104] By providing the second winding 126 with a relatively large thickness and a relatively small width, the contact area between the second winding 126 and the heat insulation component 110 can be reduced by narrow-side contact, thereby reducing the heat transferred to the heat insulation component 110 and lowering the operating temperature of the heat insulation component 110.

[0105] At the same time, the strip-shaped second winding 126 can be tightly rolled into a bundle during transportation, thereby reducing transportation difficulty and transportation cost.

[0106] The ratio of the second thickness T2 to the second width W2 is greater than or equal to 2, so as to ensure that the second winding 126 has a wide surface with sufficient area, thereby increasing the heat radiation of the second winding 126.

[0107] Specifically, the second width W2 is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0108] In this embodiment, the range of the second width W2 of the second winding 126 is defined.

[0109] Specifically, by defining the second width W2 as greater than or equal to 0.1 mm, it can be ensured that the second winding 126 has a certain bending resistance in the radial direction, thereby reducing the possibility that the second winding 126 warps upward or even breaks.

[0110] By defining the second width W2 as less than or equal to 0.2 mm, on the one hand, the internal resistance of the second winding 126 can be limited by limiting the cross-sectional area; on the other hand, the second winding 126 can be rolled tightly into a bundle more conveniently, thereby providing convenient conditions for the lightweight design of the second winding 126.

[0111] Specifically, the second winding 126 is wave-shaped in its extension direction.

[0112] In this embodiment, the second winding 126 is wave-shaped in its extension direction. By arranging the second winding 126 in a wave shape, effective self-support can be provided for the second winding 126 through the corresponding wave-shaped narrow side, thereby reducing the possibility that the second winding 126 tilts or even topples, and thus achieving the technical effect of improving the structural stability of the second winding 126. At the same time, by configuring the second winding 126 in a wave shape, it is also beneficial to increase the spacing between two adjacent layers 1222 and reduce the possibility of a short circuit caused by contact between two adjacent layers 1222, thereby achieving the technical effect of improving the safety and reliability of the coil disk 100.

[0113] As shown in FIGS. 7, 8, 9, and 10, in some embodiments of the present application, the cross-sectional shape of the winding 120 comprises rectangle, trapezoid, parallelogram, or ellipse.

[0114] In this embodiment, the cross-sectional shape of the winding 120 comprises rectangle, trapezoid, parallelogram, or ellipse. Different sections of the same winding 120 may have different cross-sectional shapes, as long as the requirement of increasing thermal radiation by means of the strip-shaped form is satisfied.

[0115] Specifically, as shown in FIGS. 11, 68, and 69, the cross section of the winding 120 further include a racetrack shape. The racetrack-shaped winding 120 has two straight sides, which facilitates laying the winding 120 flat on the heat insulation component 110.

[0116] As shown in FIGS. 12 and 14, in some embodiments of the present application, the coil 122 comprises a plurality of layers 1222 in the radial direction, and the layers 1222 are circular or elliptical.

[0117] In FIGS. 12, 13, and 14, arrow e indicates the radial direction of the coil.

[0118] In this embodiment, the winding 120 forms a plurality of layers 1222 during spiral winding, and each turn layer 1222 has the same shape but different size. On this basis, the layers 1222 of the coil 122 are circular or elliptical, so that the formed coil 122 can fit the circular bottom surfaces of common cooking utensils 200 on the market, thereby ensuring that the coil disk 100 can provide effective heating for the cooking utensils 200.

[0119] As shown in FIG. 13, in some embodiments of the present application, the coil 122 comprises a plurality of layers 1222 in the radial direction, and the layers 1222 are polygonal.

[0120] In this embodiment, the winding 120 forms a plurality of layers 1222 during spiral winding, and each turn 1222 has the same shape but different size. On this basis, the layers 1222 of the coil 122 are polygonal. Specifically, the layers 1222 of the coil 122 may be selected as regular hexagons. By configuring the layers 1222 of the coil 122 as polygons, the winding difficulty of the winding 120 can be reduced, and the number of positioning points of the winding 120 on the heat insulation component 110 can be reduced, thereby achieving the technical effects of reducing the process complexity of the coil disk 100 and reducing the cost of the coil disk 100.

[0121] In some embodiments of the present application, the winding 120 is a metal winding; and the melting point of the metal winding is greater than or equal to 600°C.

[0122] In this embodiment, the winding 120 is made of a high-temperature-resistant material, and the melting point of the high-temperature-resistant metal is greater than or equal to 600°C, to ensure that the winding 120 will not melt under a high-power thermal-radiation heating mode, thereby achieving the technical effects of improving the reliability of the coil disk 100 and reducing the failure rate of the coil disk 100.

[0123] In some technical solutions of the present application, the coil disk 100 further comprises pins provided at the winding 120, and the pins are at least partially inserted into the heat insulation component 110.

[0124] In this technical solution, the coil disk 100 is further provided with pins, and the pins are connected to the winding 120 and located on the side of the winding 120 facing the heat insulation component 110. The number of pins is plural, and the plurality of pins are spaced apart in the extension direction of the winding 120.

[0125] By providing the pins, the winding 120 can be inserted and mounted on the heat insulation component 110 during assembly. On the one hand, the winding 120 can be positioned by the pins and deformation of the winding 120 can be restricted; on the other hand, the assembly difficulty of the winding 120 and the structural complexity of the coil disk 100 can be simplified.

[0126] When a heat insulation component 110 with relatively high hardness is selected, insertion holes may be reserved on the heat insulation component 110, and the winding 120 can be assembled by correspondingly inserting the pins into the insertion holes.

[0127] When a heat insulation component 110 with relatively low hardness is selected, insertion marks may be provided at the heat insulation component 110, and the assembly can be completed by correspondingly inserting the pins aligned with the insertion marks into the heat insulation component 110.

[0128] As shown in FIGS. 15, 16, 17, and 18, in some embodiments of the present application, the coil disk 100 further comprises: a support component 130 connected to the heat insulation component 110; and a magnetic component 140 provided between the support component 130 and the heat insulation component 110.

[0129] In this embodiment, the coil disk 100 further comprises the support component 130 and the magnetic component 140. The support component 130 is connected to the heat insulation component 110, and the support component 130 can support and protect the heat insulation component 110 and the winding 120. The thermal radiation generated by the energized coil 122 is blocked by the heat insulation component 110, to reduce the operating temperature of the support component 130 and avoid melting of the support component 130 due to high temperature.

[0130] On this basis, the coil disk 100 further comprises the magnetic component 140. The magnetic component 140 is provided at the support component 130, and is located between the support component 130 and the coil 122. By providing the magnetic component 140, the distribution of the electromagnetic field on the side of the coil 122 away from the cooking utensil 200 can be changed, so that the electromagnetic field generated by the coil 122 can be concentrated on the side where the cooking utensil 200 is located, thereby concentratively heating the cooking utensil 200 and achieving the technical effects of improving electromagnetic heating efficiency and electromagnetic heating energy efficiency.

[0131] As shown in FIG. 17, in some embodiments of the present application, the magnetic component 140 is strip-shaped, and the length direction of the magnetic component 140 is consistent with the radial direction of the coil 122.

[0132] In this embodiment, the magnetic component 140 is strip-shaped, and the length direction of the magnetic component 140 is consistent with the radial direction of the coil 122. By arranging the magnetic component 140 along the radial direction of the coil 122, the deflection effect of the electromagnetic field can be enhanced, so that the electromagnetic field is concentrated on the cooking utensil 200 on the opposite side.

[0133] On this basis, a plurality of magnetic components 140 are provided, and the plurality of magnetic components 140 are uniformly distributed in the circumferential direction of the coil 122. By providing a plurality of uniformly distributed magnetic components 140, dead angles of magnetic field deflection on the side of the coil 122 away from the cooking utensil 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0134] On this basis, a plurality of magnetic components 140 are provided, and the plurality of magnetic components 140 are uniformly distributed in the circumferential direction of the coil 122. By providing a plurality of uniformly distributed magnetic components 140, dead angles of magnetic field deflection on the side of the coil 122 away from the cooking utensil 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0135] As shown in FIGS. 19, 20, and 31, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a first heat insulation component 1102; a coil 122 provided on a first side of the first heat insulation component 1102, where the coil 122 can generate thermal radiation and an electromagnetic field after being energized; a magnetic component 140 provided on a second side of the heat insulation component away from the coil 122; and a second heat insulation component 1104 at least partially located between the first heat insulation component 1102 and the magnetic component 140, where the first heat insulation component 1102 and the second heat insulation component 1104 are made of different materials.

[0136] In FIG. 19, arrow f indicates the direction of heat transfer generated by the coil 122.

[0137] In FIG. 20, arrow g indicates the axial direction of the coil 122, corresponding to the thickness direction of the coil disk 100.

[0138] The present application provides a coil disk 100 having both electromagnetic heating and thermal-radiation heating functions.

[0139] The coil disk 100 comprises a coil 122. The winding is spirally wound to form the spiral coil 122. After the spiral coil 122 is energized, it can generate an electromagnetic field above it. Meanwhile, because the coil 122 has a certain internal resistance, the energized coil 122 can also simultaneously generate thermal radiation.

[0140] The coil disk 100 further comprises the first heat insulation component 1102 and the magnetic component 140. The magnetic component 140 is opposite to the coil 122, and is located on the side of the coil 122 away from the cooking utensil 200. By providing the magnetic component 140, the distribution of the electromagnetic field on the side of the coil 122 away from the cooking utensil 200 can be changed, so that the electromagnetic field generated by the coil 122 can be concentrated on the side where the cooking utensil 200 is located, thereby concentratively heating the cooking utensil 200 and achieving the technical effects of improving electromagnetic heating efficiency and electromagnetic heating energy efficiency.

[0141] The first heat insulation component 1102 is provided between the coil 122 and the magnetic component 140. A first side of the first heat insulation component 1102 faces the cooking utensil 200, and the coil 122 is provided on the first side of the first heat insulation component 1102. A second side of the first heat insulation component 1102 faces away from the cooking utensil 200, and the magnetic component 140 is provided on the second side of the first heat insulation component 1102. The first heat insulation component 1102 has excellent thermal insulation performance and can reduce the heat diffused from the high-temperature cooking utensil 200 and the high-temperature coil 122 to the magnetic component 140, so that the magnetic component 140 remains at a relatively low temperature during operation, thereby preventing the magnetic component 140 from losing magnetism due to high temperature and ensuring the operation reliability of the coil disk 100.

[0142] On this basis, the coil disk 100 further comprises the second heat insulation component 1104. The second heat insulation component 1104 is provided on the side of the first heat insulation component 1102 facing away from the coil 122. After assembly is completed, the second heat insulation component 1104 at least fills the region between the first heat insulation component 1102 and the magnetic component 140. The second heat insulation component 1104 can form a second barrier between the first heat insulation component 1102 and the magnetic component 140, to further reduce the heat transfer efficiency between the coil 122 and the magnetic component 140.

[0143] The material of the second heat insulation component 1104 is different from that of the first heat insulation component 1102. The first heat insulation component 1102 not only needs to have excellent thermal insulation performance, but also needs to have sufficient hardness and rigidity to ensure that the first heat insulation component 1102 can provide effective and reliable support for the coil 122. For example, the material of the first heat insulation component 1102 may be a mixture of white carbon black and silicon carbide stone, or flexible vacuum silicon insulation cotton. The second heat insulation component 1104 does not contact the coil 122, and therefore has lower requirements for hardness and rigidity. Accordingly, the main task of the second heat insulation component 1104 is to reduce the heat conduction efficiency between the coil 122 and the magnetic component 140. Therefore, by selecting a different material, the second heat insulation component 1104 can have better thermal insulation performance than the first heat insulation component 1102. For example, the second heat insulation component 1104 may be made of aerogel.

[0144] When a single thermal insulation material is filled between the coil 122 and the magnetic component 140, the filling thickness required to meet the target thermal insulation requirement is relatively large, which is unfavorable for an ultra-thin design of the coil disk 100. In the present application, by using, in cooperation with the first heat insulation component 1102, the second heat insulation component 1104 having better filling-material insulation performance, the filling thickness between the coil 122 and the magnetic component 140 can be reduced while satisfying the positioning and support requirements of the coil 122, thereby solving the technical defect in the related art that the thickness of the coil disk 100 is relatively large, and further achieving the technical effects of optimizing the structure of the coil disk 100, improving the structural compactness of the coil disk 100, reducing the thickness of the coil disk 100, and facilitating miniaturized design of the coil disk 100.

[0145] As shown in FIGS. 20, 21, 22, and 23, in some embodiments of the present application, the coil disk 100 further comprises a support component 130. A first side of the support component 130 comprises an accommodation groove 1302. The coil 122 and the first heat insulation component 1102 are provided in the accommodation groove 1302, and the magnetic component 140 is provided on a second side of the support component 130.

[0146] In this embodiment, the first side of the support component 130 is formed with the accommodation groove 1302, and the accommodation groove 1302 faces the cooking utensil 200. The first heat insulation component 1102 and the coil 122 are provided in the accommodation groove 1302. The magnetic component 140 is fixed to the second side of the support component 130. During assembly, the magnetic component 140 is first assembled to the support component 130, and then the heat insulation component and the coil 122 are placed into the accommodation groove 1302 and fixedly connected to the support component 130.

[0147] As shown in FIGS. 28, 29, and 30, in some embodiments of the present application, the second heat insulation component 1104 is located between the first heat insulation component 1102 and the magnetic component 140.

[0148] In this embodiment, the second heat insulation component 1104 is provided only between the first heat insulation component 1102 and the magnetic component 140. The second heat insulation component 1104 is sheet-shaped, the second heat insulation component 1104 is provided on the second side of the support component 130, a gap is left between the magnetic component 140 and the support component 130, and the second heat insulation component 1104 fills the gap.

[0149] During operation, part of the heat generated by the coil 122 is transferred toward the direction where the magnetic component 140 is located. The first heat insulation component 1102 can reduce the rate at which the heat is transferred to the support component 130. After the heat passes across the support component 130 and is transferred to the second heat insulation component 1104, the second heat insulation component 1104 further reduces the rate at which the heat is transferred to the magnetic component 140, thereby forming two thermal insulation protections to reduce the temperature of the magnetic component 140 during operation, avoid demagnetization of the magnetic component 140 due to high temperature, ensure that the magnetic component 140 can concentrate the electromagnetic field on the cooking utensil 200 located on the first side of the coil 122, and further achieve the technical effects of improving the thermal insulation performance of the coil disk 100 and improving the heating efficiency and heating reliability of the coil disk 100.

[0150] As shown in FIGS. 28, 29, and 30, in some embodiments of the present application, the second heat insulation component 1104 is provided between the first heat insulation component 1102 and the support component 130.

[0151] In this embodiment, the second heat insulation component 1104 is provided only between the first heat insulation component 1102 and the magnetic component 140. The second heat insulation component 1104 is sheet-shaped, the second heat insulation component 1104 is provided inside the accommodation groove 1302, a gap is left between the first heat insulation component 1102 and the bottom surface of the accommodation groove 1302, and the second heat insulation component 1104 is provided in the gap.

[0152] During operation, part of the heat generated by the coil 122 is transferred toward the direction where the magnetic component 140 is located. The first heat insulation component 1102 can reduce the rate at which the heat is transferred to the second heat insulation component 1104. After the heat is transferred to the second heat insulation component 1104, the second heat insulation component 1104 further reduces the rate at which the heat is transferred to the support component 130 and the magnetic component 140, thereby forming two thermal insulation protections to reduce the temperature of the magnetic component 140 during operation, avoid demagnetization of the magnetic component 140 due to high temperature, ensure that the magnetic component 140 can concentrate the electromagnetic field on the cooking utensil 200 located on the first side of the coil 122, and further achieve the technical effects of improving the thermal insulation performance of the coil disk 100 and improving the heating efficiency and heating reliability of the coil disk 100.

[0153] As shown in FIGS. 32, 33, and 34, in some embodiments of the present application, the second heat insulation component 1104 wraps the magnetic component 140.

[0154] In this embodiment, the second heat insulation component 1104 is provided at the outer surface of the magnetic component 140, and the second heat insulation component 1104 at least covers the surface of the magnetic component 140 facing the support component 130. Specifically, the entire magnetic component 140 may be wrapped by the second heat insulation component 1104.

[0155] In this case, the second heat insulation component 1104 and the magnetic component 140 are combined into a module. During the process of assembling the magnetic component 140 to the support component 130, assembly of the second heat insulation component 1104 is completed simultaneously. Therefore, the second heat insulation component 1104 wrapped outside the magnetic component 140 reduces the rate at which heat is transferred to the magnetic component 140, so that the magnetic component 140 can remain at a relatively low temperature during operation, thereby achieving the technical effects of reducing the process complexity of the coil disk 100 and reducing the assembly difficulty of the coil disk 100.

[0156] As shown in FIG. 24, in some embodiments of the present application, the thickness H1 of the first heat insulation component 1102 is greater than or equal to 4 mm and less than or equal to 9 mm.

[0157] In this embodiment, the axial direction of the coil 122 corresponds to the thickness direction of the coil disk 100, and the thickness of the first heat insulation component 1102 needs to be greater than or equal to 4 mm and less than or equal to 9 mm.

[0158] By defining the thickness of the first heat insulation component 1102 as greater than or equal to 4 mm, it can be ensured that the first heat insulation component 1102 has sufficient hardness and rigidity, thereby ensuring that the first heat insulation component 1102 can effectively support and position the coil 122 and prolonging the service life of the first heat insulation component 1102.

[0159] By defining the thickness of the first heat insulation component 1102 as less than or equal to 9 mm, the space occupied by the first heat insulation component 1102 in the thickness direction of the coil disk 100 can be reduced on the basis of meeting the thermal insulation requirement of the first heat insulation component 1102, thereby facilitating ultra-thin design of the coil disk 100.

[0160] In an embodiment, when the coil disk 100 is applied to an induction cooker, the thickness of the first heat insulation component 1102 is greater than or equal to 5 mm and less than or equal to 7 mm.

[0161] As shown in FIG. 24, in some embodiments of the present application, the first heat insulation component 1102 comprises slots 11022, and the coil 122 is partially inserted into the slots 11022. The depth H2 of the slots 11022 is greater than or equal to 3 mm to less than or equal to 4 mm.

[0162] In this embodiment, the first side of the first heat insulation component 1102 is provided with the slots 11022, and correspondingly, the coil 122 is provided with pins. During assembly, the assembly of the coil 122 on the first heat insulation component 1102 can be completed simply by inserting the pins on the coil 122 into the slots 11022. The cooperation between the pins and the slots 11022 can maintain the coil 122 in a spiral shape on the first heat insulation component 1102, thereby reducing the possibility of misalignment and deformation of the coil 122, improving the heating reliability of the coil disk 100, and reducing the failure rate of the coil disk 100.

[0163] On this basis, the depth of the slots 11022 is greater than or equal to 3 mm and less than or equal to 4 mm.

[0164] By defining the depth of the slots 11022 as greater than or equal to 3 mm, it can be ensured that the slots 11022 can cooperate with the pins to provide effective positioning and support for the coil 122, thereby avoiding misalignment and deformation of the coil 122 due to external impact or internal stress and improving the positioning accuracy of the coil 122.

[0165] By defining the depth of the slots 11022 as less than or equal to 4 mm, structural damage to the first heat insulation component 1102 caused by the coil 122 can be reduced while satisfying the positioning requirement of the coil 122. On the one hand, it is ensured that the first heat insulation component 1102 has sufficient rigidity and hardness, thereby reducing the probability of damage to the heat insulation component; on the other hand, it is ensured that the first heat insulation component 1102 has sufficient thermal insulation performance, thereby reducing the heat transferred from the slots 11022 to the magnetic component 140.

[0166] As shown in FIGS. 25, 26, and 27, in some embodiments of the present application, between the first heat insulation component 1102 and the magnetic component 140, the thickness H3 of the second heat insulation component 1104 is greater than or equal to 1 mm to less than or equal to 5 mm.

[0167] In this embodiment, the thickness of the second heat insulation component 1104 located between the first heat insulation component 1102 and the magnetic component 140 needs to be greater than or equal to 1 mm and less than or equal to 5 mm.

[0168] By defining the filling thickness of the second heat insulation component 1104 between the first heat insulation component 1102 and the magnetic component 140 as greater than or equal to 1 mm, it can be ensured that the second heat insulation component 1104 can form an effective second thermal insulation protection on the basis of the first heat insulation component 1102, so that the magnetic component 140 can remain in a relatively low temperature range during operation.

[0169] By defining the filling thickness of the second heat insulation component 1104 between the first heat insulation component 1102 and the magnetic component 140 as less than or equal to 5 mm, the thickness of the coil disk 100 can be reduced while meeting the thermal insulation requirement, thereby facilitating ultra-thin design of the coil disk 100.

[0170] As shown in FIGS. 21 and 22, in some embodiments of the present application, the first side of the first heat insulation component 1102 comprises ribs 11024, and the ribs 11024 are arranged in a staggered manner with respect to the coil 122.

[0171] In this embodiment, the first side of the first heat insulation component 1102 is provided with the ribs 11024, and the ribs 11024 can improve the structural strength of the first heat insulation component 1102 to reduce the possibility of deformation or even breakage of the first heat insulation component 1102.

[0172] In an embodiment, the ribs 11024 comprise annular first ribs and columnar second ribs. The first ribs surround the coil 122. The first ribs can not only enhance the structural strength of the first heat insulation component 1102, but can also reduce the rate at which the coil 122 diffuses heat to the surroundings, thereby improving the heating energy efficiency of the coil disk 100.

[0173] The second rib is provided at the center of the spiral coil 122, that is, the coil disk 100 is wound around the second rib. The second rib can provide an installation space for a temperature sensor. The temperature sensor is configured to detect the temperature of the cooking utensil 200. By providing the temperature sensor at the second rib, the temperature sensor and the coil 122 can be staggered to avoid the heated coil 122 affecting the detection result of the temperature sensor, thereby improving the detection accuracy of the temperature sensor.

[0174] As shown in FIGS. 19, 35, 40, and 41, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110; a coil 122 provided on a first side of the heat insulation component 110, where the coil 122 can generate thermal radiation and an electromagnetic field after being energized, and a center of the coil 122 comprises an avoidance region 1223; and a magnetic component 140 provided on a second side of the heat insulation component 110 away from the coil 122, where the magnetic component 140 is provided, on a side facing the heat insulation component 110, with a protrusion 142.

[0175] In FIG. 19, arrow f indicates the transfer direction of the thermal radiation generated by the coil 122.

[0176] In FIG. 35, arrow g indicates the axial direction of the coil 122, corresponding to the thickness direction of the coil disk 100; arrow h indicates the radial direction of the coil 122; and arrow i indicates the circumferential direction of the coil 122.

[0177] In FIG. 41, arrow j indicates the converging direction of the magnetic field.

[0178] In this embodiment, the heat insulation component 110 is provided between the coil 122 and the magnetic component 140. A first side of the heat insulation component 110 faces the cooking utensil 200, and the coil 122 is provided on the first side of the heat insulation component 110. A second side of the heat insulation component 110 faces away from the cooking utensil 200, and the magnetic component 140 is provided on the second side of the heat insulation component 110. The heat insulation component 110 has excellent thermal insulation performance and can reduce the heat diffused from the high-temperature cooking utensil 200 and the high-temperature coil 122 to the magnetic component 140, so that the magnetic component 140 remains at a relatively low temperature during operation, thereby preventing the magnetic component 140 from demagnetizing due to high temperature and ensuring the operation reliability of the coil disk 100.

[0179] In an embodiment, the middle of the coil 122 is formed with the avoidance region 1223, in which no winding is provided. The avoidance region 1223 may be used for mounting a temperature sensor 150. The temperature sensor 150 is configured to detect the temperature of the cooking utensil 200 above the coil 122 to control the power of the coil 122 according to the detected temperature. Since no winding is arranged in the avoidance region 1223, interference of the coil 122 with the temperature sensor 150 during heating of the cooking utensil 200 is relatively small, and thus temperature measurement error can be reduced. Correspondingly, however, the avoidance region 1223 loses the ability to heat the cooking utensil 200 and forms a heating cold zone, causing the heating effect on the region of the cooking utensil 200 corresponding to the avoidance region 1223 to be weaker than that in other regions, thus resulting in the technical defect of uneven heating.

[0180] On this basis, the magnetic component 140 is provided with the protrusion 142. The protrusion 142 is provided on the side of the magnetic component 140 facing the heat insulation component 110. After the coil 122 is energized, on the basis that the magnetic component 140 can concentrate the electromagnetic field toward the side where the coil 122 is located, the protrusion 142 protruding toward the direction where the coil 122 is located can concentrate the electromagnetic field toward the avoidance region 1223 at the center of the coil 122, so as to increase the magnetic field strength in the avoidance region 1223 without changing the power of the coil 122, reduce the heating difference between the avoidance region 1223 and the surrounding other regions, and avoid forming an obvious cold zone on the cooking utensil 200, thereby alleviating the technical defect existing in the related art, and further achieving the technical effects of optimizing the structure of the coil disk 100 and improving the heating uniformity and heating reliability of the coil disk 100.

[0181] In an embodiment, the raw material of the winding wound into the coil 122 is a high-temperature-resistant metal material, and the high-temperature-resistant metal material also has a relatively low linear expansion coefficient so as to avoid damage or deformation of the coil 122 at high temperature. Specifically, the coil 122 may be made of copper alloy or iron alloy.

[0182] In an embodiment, the material of the heat insulation component 110 may be a mixture of white carbon black and silicon carbide stone, or flexible vacuum silicon insulation cotton.

[0183] As shown in FIGS. 38, 39, 40, 42, and 43, in some embodiments of the present application, the protrusion 142 is annular; and the protrusion 142 and the coil 122 share a common axis.

[0184] In this embodiment, the protrusion 142 on the magnetic component 140 is annular. Specifically, the protrusion 142 may be a continuous annular structure, or may be a discontinuous annular structure having a plurality of intervals. By providing the protrusion 142 as annular, the magnetic field can be converged from multiple directions or even all directions, so that the magnetic field can be concentrated toward the avoidance region 1223 at the center of the coil 122, thereby improving the heating capability of the avoidance region 1223.

[0185] The annular protrusion 142 and the spirally wound coil 122 share a common axis. The axis is located in the avoidance region 1223. By providing the coil 122 and the protrusion 142 coaxially, the effect of the annular protrusion 142 in converging the magnetic field generated by the coil 122 can be enhanced, so that the magnetic field generated by the spiral coil 122 can gather toward the avoidance region 1223 where the axis is located, thereby avoiding the converged magnetic field from deviating out of the avoidance region 1223 and compensating for the heating deficiency of the avoidance region 1223.

[0186] As shown in FIGS. 39, 40, and 43, in some embodiments of the present application, a plurality of protrusions 142 are provided, and the plurality of protrusions 142 are spaced apart in the radial direction of the coil 122.

[0187] In this embodiment, on the basis that the protrusion 142 is annular, the side of the magnetic component 140 facing the coil 122 is provided with a plurality of protrusions 142. The plurality of protrusions 142 are different in size, and are spaced apart in the radial direction of the coil 122, that is, the plurality of protrusions 142 are nested.

[0188] By providing a plurality of nested protrusions 142 on the magnetic component 140, multiple barriers can be formed in the radial direction of the coil 122, thereby enhancing the effect of converging the magnetic field toward the center of the coil 122, improving the electromagnetic heating capability of the avoidance region 1223, and avoiding an obvious heating cold zone on the cooking utensil 200.

[0189] In an embodiment, the number of protrusions 142 may be adjusted according to parameters such as the size of the coil 122, the size of the cooking utensil 200 frequently heated, and the rated heating power. In this embodiment, no strict limitation is imposed thereon, as long as the heating uniformity requirements of the cooking utensil 200 are satisfied.

[0190] As shown in FIGS. 39, 40, and 43, in some embodiments of the present application, among the plurality of protrusions 142, at least one protrusion 142 is opposite to the avoidance region 1223; and / or among the plurality of protrusions 142, at least one protrusion 142 is located on the peripheral side of the avoidance region 1223.

[0191] In this embodiment, among the plurality of annular protrusions 142, at least one protrusion 142 is opposite to the avoidance region 1223, that is, located on the inner side of the avoidance region 1223. When the coil 122 is energized, the electromagnetic field is concentrated along the protrusion 142 toward the corresponding avoidance region 1223, thereby increasing the magnetic field strength of the avoidance region 1223 and enhancing the heating effect of the avoidance region 1223.

[0192] Correspondingly, among the plurality of annular protrusions 142, at least one protrusion 142 is opposite to the region where the winding around the avoidance region 1223 is located, that is, located on the peripheral side of the avoidance region 1223. When the coil 122 is energized, the protrusion 142 located on the peripheral side of the avoidance region 1223 suppresses the tendency of the electromagnetic field to diffuse toward the surroundings, thereby increasing the magnetic field strength of the avoidance region 1223 and enhancing the heating effect of the avoidance region 1223.

[0193] In an embodiment, the annular protrusions 142 may be provided both on the inner side and the peripheral side of the avoidance region 1223 to reduce the heating difference between the avoidance region 1223 and the surrounding regions where the winding is located.

[0194] As shown in FIGS. 38, 39, and 40, in some embodiments of the present application, the magnetic component 140 comprises: magnetic strips 144 provided at the heat insulation component 110, the magnetic strips 144 extending in the radial direction of the coil 122, where a plurality of magnetic strips 144 are provided and the plurality of magnetic strips 144 are spaced apart in the circumferential direction of the coil 122; and first ribs 1422 provided on the side of the magnetic strips 144 facing the heat insulation component 110, where each magnetic strip 144 comprises at least one first rib 1422, and the first ribs 1422 on the plurality of magnetic strips 144 are combined to form the annular protrusion 142.

[0195] In this embodiment, the magnetic component 140 comprises a plurality of magnetic strips 144. The magnetic strips 144 extend in the radial direction of the coil 122, and the plurality of magnetic strips 144 are spaced apart along the circumferential direction of the coil 122. Specifically, the plurality of magnetic strips 144 may be uniformly distributed below the coil 122, that is, the angle between any two adjacent magnetic strips 144 among the plurality of magnetic strips 144 is the same.

[0196] On this basis, each of the plurality of magnetic strips 144 is provided with at least one first rib 1422. An comprised angle is formed between the extension direction of the first rib 1422 on the magnetic strip 144 and the radial direction of the coil 122. For example, a strip-shaped first rib 1422 perpendicular to the radial direction of the coil 122 can be provided, or an arc-shaped first rib 1422 extending on a circle with the axis of the coil 122 as the axis can be provided.

[0197] The first ribs 1422 on the plurality of magnetic strips 144 together form the annular and discontinuous protrusion 142. No first rib 1422 is provided between two adjacent magnetic strips 144, and correspondingly, a notch is provided in the protrusion 142.

[0198] When a plurality of annular protrusions 142 are provided in the radial direction of the coil 122, at least some of the plurality of magnetic strips 144 are correspondingly provided with a plurality of first ribs 1422, and the plurality of first ribs 1422 are spaced apart in the length direction of the magnetic strip 144, so as to form a plurality of protrusions 142 nested inside and outside.

[0199] This structure can make reasonable use of the structure of the magnetic strips 144 below the coil 122. Specifically, the annular protrusion 142 is formed by providing the ribs at the magnetic strip 144, thereby reducing the modification difficulty and modification cost of the coil disk 100 while satisfying the requirement for magnetic field convergence and improving the heating capability of the avoidance region 1223.

[0200] As shown in FIGS. 38 and 39, in some embodiments of the present application, the magnetic component 140 comprises a plurality of arrays 1442, and each array 1442 comprises a plurality of magnetic strips 144; the plurality of magnetic strips 144 belonging to the same array 1442 are distributed in a fan-shaped region.

[0201] In this embodiment, the magnetic component 140 comprises a plurality of arrays 1442, and each array 1442 comprises a plurality of magnetic strips 144, where each array 1442 corresponds to a sector below the coil 122. The plurality of arrays 1442 are spliced below the coil 122 to facilitate the formation of the annular protrusion 142 below the coil 122.

[0202] In an embodiment, the converging effect of the magnetic field may be adjusted by adjusting the number of arrays 1442 and the number of magnetic strips 144 comprised in each array 1442. For example, when high heating uniformity is required, the number of arrays 1442 and the number of magnetic strips 144 in each array 1442 may be increased; otherwise, the number of arrays 1442 and the number of magnetic strips 144 in each array 1442 may be reduced.

[0203] As shown in FIGS. 38 and 39, in some embodiments of the present application, the array 1442 comprises: a first magnetic strip 1444, where in the radial direction of the coil 122, both an inner end and an outer end of the first magnetic strip 1444 are provided with first ribs 1422; and a second magnetic strip 1446, where the second magnetic strip 1446 is shorter than the first magnetic strip 1444, and in the radial direction of the coil 122, an outer end of the second magnetic strip 1446 is provided with a first rib 1422.

[0204] In this embodiment, the magnetic component 140 comprises inner and outer two protrusions 142, where the outer protrusion 142 is located on the peripheral side of the avoidance region 1223, and the inner protrusion 142 is opposite to the avoidance region 1223.

[0205] On this basis, the array 1442 comprises the first magnetic strip 1444 and the second magnetic strip 1446. The first magnetic strip 1444 and the second magnetic strip 1446 are distinguished by their lengths and by the number of the first ribs 1422 thereon. The first magnetic strip 1444 is longer, and both ends thereof are provided with first ribs 1422. Viewed from the side, the first magnetic strip 1444 is U-shaped. The second magnetic strip 1446 is shorter than the first magnetic strip 1444, and only the outer end of the second magnetic strip 1446 is provided with a first rib 1422. Viewed from the side, the second magnetic strip 1446 is L-shaped.

[0206] After assembly of the plurality of arrays 1442 is completed, the first rib 1422 at the outer end of the first magnetic strip 1444 cooperates with the first rib 1422 at the outer end of the second magnetic strip 1446 to form the protrusion 142 located on the peripheral side of the avoidance region 1223, and the first rib 1422 at the inner end of the first magnetic strip 1444 forms the protrusion 142 opposite to the avoidance region 1223.

[0207] Thus, it can be seen that, by providing the second magnetic strip 1446 having a shorter length in cooperation with the first magnetic strip 1444, the small-size central region can be reasonably avoided. Only the first ribs 1422 at the inner ends of a few first magnetic strips 1444 are used to form the protrusion 142 having a relatively small circumferential dimension, thereby avoiding accumulation and interference of multiple magnetic strips 144 in the central region. Meanwhile, the combination of the first ribs 1422 at the outer ends of the first magnetic strips 1444 and the first ribs 1422 at the outer ends of the second magnetic strips 1446 can ensure the density of the protrusion 142 on the peripheral side of the avoidance region 1223, thereby avoiding excessive sparsity of the outer protrusion 142 having a relatively large circumferential dimension. Further, the technical effects of improving the converging effect and converging uniformity of the electromagnetic field, and improving the heating uniformity and reliability of the coil disk 100 are achieved.

[0208] As shown in FIGS. 42 and 43, in some embodiments of the present application, the magnetic component 140 comprises: magnetic sheets 146, where the magnetic sheets 146 are fan-shaped, a plurality of magnetic sheets 146 are provided, and the plurality of magnetic sheets 146 are distributed in the circumferential direction of the coil 122; and second ribs 1424 provided on the side of the magnetic sheets 146 facing the heat insulation component 110, where each magnetic sheet 146 comprises at least one second rib 1424, and the second ribs 1424 on the plurality of magnetic sheets 146 are combined to form the annular protrusion 142.

[0209] In this embodiment, the magnetic component 140 comprises a plurality of magnetic sheets 146, and the magnetic sheets 146 are fan-shaped. Each magnetic sheet 146 corresponds to a sector below the coil 122, and the plurality of magnetic sheets 146 are spliced below the coil 122 to form the annular magnetic component 140.

[0210] On this basis, both the inner end and the outer end of each magnetic sheet 146 are provided with second ribs 1424. The second ribs 1424 at the outer ends of the plurality of magnetic sheets 146 form the protrusion 142 on the peripheral side of the avoidance region 1223, and the second ribs 1424 at the inner ends of the plurality of magnetic sheets 146 form the protrusion 142 opposite to the avoidance region 1223, thereby forming inner and outer two magnetic-field converging structures.

[0211] Compared with the solution using the magnetic strips 144, the magnetic sheets 146 have a higher coverage rate below the coil 122. It is even possible to cover the entire region below the coil 122 with a plurality of closely fitted magnetic sheets 146, thereby reducing the magnetic field strength below the magnetic sheets 146 and improving the effect of the magnetic component 140 in converging the magnetic field upward. Meanwhile, compared with the solution using the magnetic strips 144, the notches in the protrusion 142 spliced by the plurality of magnetic sheets 146 are smaller, or can even be eliminated by close fitting, thereby improving the effect of the protrusion 142 in converging the magnetic field toward the center of the coil 122 and improving the heating capability of the avoidance region 1223.

[0212] As shown in FIGS. 35, 36, and 37, in some embodiments of the present application, the coil disk 100 further comprises a support component 130. A first side of the support component 130 comprises an accommodation groove 1302, the heat insulation component 110 and the coil 122 are provided in the accommodation groove 1302, and the magnetic component 140 is provided on a second side of the support component 130.

[0213] As shown in FIGS. 35 and 37, in some embodiments of the present application, the second side of the support component 130 comprises an installation groove 1304, and the magnetic component 140 is provided in the installation groove 1304. The support component 130 further comprises an avoidance hole 1306, and the protrusion 142 partially passes through the avoidance hole 1306.

[0214] In this embodiment, the support component 130 is formed of a non-magnetically conductive material to avoid the support component 130 interfering with the coil 122 and the magnetic component 140. On this basis, the side of the support component 130 away from the heat insulation component 110 is provided with the installation groove 1304, that is, the installation groove 1304 is opposite to the accommodation groove 1302. The shape of the installation groove 1304 matches the outer contour shape of the magnetic component 140, so that the magnetic component 140 can be embedded in the installation groove 1304.

[0215] By embedding the magnetic component 140 in the side of the support component 130 away from the heat insulation component 110, the support assembly can form a second barrier on the basis of the heat insulation component 110, thereby further reducing the heat diffused to the magnetic component 140. Meanwhile, the installation groove 1304 provided at the back surface of the support component 130 can, on the one hand, facilitate disassembly and assembly of the magnetic component 140, and on the other hand improve the heat dissipation effect of the magnetic component 140 by exposing the magnetic component 140.

[0216] On this basis, the support component 130 is further provided with the avoidance holes 1306. The avoidance holes 1306 communicate with the installation groove 1304 and penetrate through the support component 130. During assembly, the magnetic strips 144 or the magnetic sheets 146 are embedded into the installation groove 1304, and the first ribs 1422 or the second ribs 1424 are inserted into the avoidance holes 1306. By providing the avoidance holes 1306 for accommodating the protrusions 142, on the one hand, the structural compactness of the coil disk 100 can be improved, the thickness of the coil disk 100 can be reduced, and convenient conditions can be provided for miniaturized design of the coil disk 100. On the other hand, the effect of converging the magnetic field toward the avoidance region 1223 can be improved by the protrusion 142 penetrating through the support component 130, thereby reducing the influence of structural blocking on magnetic field convergence.

[0217] As shown in FIGS. 35 and 44, in some embodiments of the present application, the second side of the heat insulation component 110 comprises avoidance grooves 1105, and the protrusion 142 is partially located in the avoidance grooves 1105.

[0218] In this embodiment, the side of the heat insulation component 110 facing the support component 130 is provided with the avoidance grooves 1105, and the avoidance grooves 1105 are opposite to the avoidance holes 1306 on the support component 130. After assembly is completed, the protrusion 142 passing through the avoidance holes 1306 is inserted into the avoidance grooves 1105. By providing the avoidance grooves 1105 for inserting the protrusion 142, on the one hand, in cooperation with the avoidance holes 1306, the structural compactness of the coil disk 100 can be further improved, the thickness of the coil disk 100 can be reduced, and convenient conditions can be provided for miniaturized design of the coil disk 100. On the other hand, by shortening the distance between the protrusion 142 and the coil 122, the effect of converging the magnetic field toward the avoidance region 1223 can be improved, thereby reducing the influence of structural blocking on magnetic field convergence.

[0219] As shown in FIG. 44, in some embodiments of the present application, in the axial direction of the coil 122, the distance between the coil 122 and the magnetic strip 144 is a first distance H4; and the first distance H4 is greater than or equal to 4 mm and less than or equal to 9 mm.

[0220] In this embodiment, in the axial direction of the coil 122, the distance between the coil 122 and the magnetic strip 144 is the first distance H4. The first distance H4 can be reduced by providing the above-mentioned avoidance holes 1306 and avoidance grooves 1105.

[0221] In an embodiment, the first distance H4 needs to be greater than or equal to 4 mm and less than or equal to 9 mm, and specifically may be controlled between 5 mm and 7 mm.

[0222] As shown in FIGS. 39 and 45, while ensuring the thickness and rigidity of the heat insulation component 110, reducing the first distance H4 can reduce the number of magnetic strips 144. For example, in this embodiment, when the thickness of the heat insulation component 110 is selected as 7 mm, the total number of magnetic strips 144 is 23. If the thickness of the heat insulation component 110 is reduced to 5 mm, the number of magnetic strips 144 can be reduced to 17.

[0223] Thus, it can be seen that reducing the first distance H4 is beneficial to reducing the cost and structural complexity of the coil disk 100.

[0224] In an embodiment, the material of the heat insulation component 110 may be a white carbon black mixture or another material having good thermal insulation performance, and needs to satisfy the requirement that a high-temperature winding can be inserted into it. To ensure that 3.5 mm winding pins can be inserted, if the heat insulation component 110 is made only of white carbon black, the thickness needs to be controlled at at least 12 mm or more. Now, by selecting a white carbon black mixture or another material with stronger thermal insulation performance to make the heat insulation component 110, the thickness can be controlled at 4 mm to 9 mm, to satisfy the above requirement for the first distance H4.

[0225] As shown in FIG. 35, in some embodiments of the present application, the heat insulation component 110 comprises a boss 1106, and the boss 1106 is located in the avoidance region 1223. The coil disk 100 further comprises a temperature sensor 150 provided at the boss 1106.

[0226] In this embodiment, the side of the heat insulation component 110 away from the magnetic component 140 is provided with the boss 1106, and the position of the boss 1106 overlaps the position of the avoidance region 1223. After assembly is completed, the coil 122 surrounds the avoidance region 1223.

[0227] On this basis, the temperature sensor 150 is provided at the boss 1106. The temperature sensor 150 can detect the temperature of the cooking utensil 200 above the coil disk 100, and then a controller can correspondingly adjust the power of the coil 122 according to the temperature, thereby ensuring that the current heating power matches the heating demand.

[0228] By providing the boss 1106, the temperature sensor 150 can be raised, so that the temperature sensor 150 and the coil 122 are staggered, which reduces interference of the coil 122 with the temperature sensor 150, and enables the temperature detected by the temperature sensor 150 to approach the actual temperature of the cooking utensil 200. This further achieves the technical effects of improving the detection accuracy of the temperature sensor 150 and improving the heating reliability of the coil disk 100.

[0229] As shown in FIGS. 19, 46, 47, and 48, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110 comprising the through hole 1107; a winding 120 wound on a first side of the heat insulation component 110 to form a coil 122, where the coil 122 can generate thermal radiation and an electromagnetic field after being energized; and an electrical connection assembly 160, at least partially provided on a second side of the heat insulation component 110. The electrical connection assembly 160 is connected to the winding 120 through the through hole 1107, or a part of the winding 120 extends through the through hole 1107 to the second side of the heat insulation component 110, and the electrical connection assembly 160 is connected to the winding 120 located on the second side of the heat insulation component 110.

[0230] In FIG. 19, arrow f indicates the transfer direction of thermal radiation from the coil 122.

[0231] In this embodiment, the heat insulation component 110 is provided with the through hole 1107, and the through hole 1107 communicate the first side and the second side of the heat insulation component 110. The coil disk 100 further comprises the electrical connection assembly 160, and the electrical connection assembly 160 is at least partially mounted on the second side of the heat insulation component 110. The electrical connection assembly 160 is configured to connect the winding 120 and a circuit board. The circuit board may supply power to the winding 120 through the electrical connection assembly 160, so that the energized coil 122 generates thermal radiation and an electromagnetic field.

[0232] In a first case, the electrical connection assembly 160 extends from the through hole 1107 to the first side of the heat insulation component 110 and is connected to the ends of the winding 120 on the first side of the heat insulation component 110, thereby forming an energized circuit. At this time, the routing of the winding 120 and the routing of the electrical connection assembly 160 do not interfere with each other, and the electrical connection assembly 160 located on the second side of the heat insulation component 110 can freely select, as required, the lead-out direction of the inner end 1204 or the outer end 1206 of the spirally wound winding 120.

[0233] In a second case, the ends of the winding 120 extend through the through hole 1107 to the second side of the heat insulation component 110, and the electrical connection assembly 160 is connected to the winding 120 passing through the through hole 1107 on the second side of the heat insulation component 110, thereby forming an energized circuit. The heating performance of the coil 122 is mainly affected by the winding shape on the first side of the heat insulation component 110. Similarly, in this case, the routing of the winding 120 on the first side of the heat insulation component 110 and the routing of the electrical connection assembly 160 on the second side of the heat insulation component 110 do not interfere with each other, and the electrical connection assembly 160 located on the second side of the heat insulation component 110 can freely select, as required, the lead-out direction of the inner end 1204 or the outer end 1206 of the spirally wound winding 120.

[0234] Thus, it can be seen that, by providing the through hole 1107 at the heat insulation component 110 and providing the electrical connection assembly 160 on the second side of the heat insulation component 110 in cooperation with the through hole 1107, the inner and outer ends of the winding 120 can be led out separately by the through hole 1107, which eliminates the possibility of routing interference between the electrical connection line and the winding 120, and solves the technical defect in the related art that the inner and outer ends 1206 of the winding 120 cannot be led out separately. This further achieves the technical effects of optimizing the lead-out structure of the coil disk 100 and reducing the electrical connection difficulty of the coil disk 100.

[0235] Specifically, the raw material of the winding 120 wound into the coil 122 is a high-temperature-resistant metal material, and the high-temperature-resistant metal material also has a relatively low linear expansion coefficient so as to avoid damage or deformation of the coil 122 at high temperature. Specifically, the coil 122 may be made of copper alloy or iron alloy.

[0236] Specifically, the material of the heat insulation component 110 may be a mixture of white carbon black and silicon carbide stone, or flexible vacuum silicon insulation cotton.

[0237] As shown in FIGS. 46, 48, and 50, in some embodiments of the present application, specifically, the coil disk 100 further comprises a support component 130. A first side of the support component 130 comprises an accommodation groove 1302, and the heat insulation component 110 and the coil 122 are provided in the accommodation groove 1302. The support component 130 comprises a via hole 1307, the via hole 1307 is opposite to the through hole 1107, and the electrical connection assembly 160 or the winding 120 passes through the through hole 1107 and the via hole 1307.

[0238] In this embodiment, the electrical connection assembly 160 is provided on the second side of the support component 130 away from the cooking utensil 200, and the support component 130 is located between the heat insulation component 110 and the electrical connection assembly 160. The support component 130 is provided with the via hole 1307. After assembly is completed, the via hole 1307 are opposite to the through hole 1107. The via hole 1307 and the through hole 1107 collectively provide communication between the first side of the heat insulation component 110 and the second side of the support component 130.

[0239] When electrically connecting the winding 120, the winding 120 may extend through the through hole 1107 and the via hole 1307 to the second side of the support component 130, and the electrical connection assembly 160 is connected to the ends of the winding 120 on the second side of the support component 130. Alternatively, the electrical connection assembly 160 may extend from the via hole 1307 and the through hole 1107 to the first side of the heat insulation component 110, and the electrical connection assembly 160 is connected to the ends of the winding 120 on the first side of the heat insulation component 110.

[0240] Thus, it can be seen that, by providing the via hole 1307, the electrical connection assembly 160 or the ends of the winding 120 can cross the support component 130 to complete electrical connection, so that the electrical connection assembly 160 can be arranged outside the support component 130 while satisfying the requirement for separate lead-out from both ends, thereby avoiding interference between the electrical connection assembly 160 and the support component 130. Further, the technical effects of optimizing the structural layout of the coil disk 100, improving the structural compactness of the coil disk 100, and facilitating miniaturized design of the coil disk 100 are achieved.

[0241] As shown in FIGS. 46 and 50, in some embodiments of the present application, specifically, the winding 120 is spirally wound on the first side of the heat insulation component 110; the winding 120 comprises an inner end 1204 and an outer end 1206; the through holes 1107 comprise a first through hole 11072 and a second through hole 11074; the electrical connection assembly 160 is connected to the inner end 1204 of the winding 120 through the first through hole 11072; and the electrical connection assembly 160 is connected to the outer end 1206 of the winding 120 through the second through hole 11074.

[0242] In this embodiment, the winding 120 is spirally wound on the first side of the heat insulation component 110 to form a spiral coil 122 capable of simultaneously generating thermal radiation and an electromagnetic field. The inner end 1204 of the coil 122 is located in a central region of the heat insulation component 110, and the outer end 1206 of the coil 122 is located in an edge region of the heat insulation component 110.

[0243] On this basis, the heat insulation component 110 is provided with the first through hole 11072 and the second through hole 11074. The first through hole 11072 is provided in the central region of the heat insulation component 110, and the electrical connection assembly 160 is connected to the inner end 1204 of the winding 120 through the first through hole 11072. The second through hole 11074 is provided in the edge region of the heat insulation component 110, and the electrical connection assembly 160 is connected to the outer end 1206 of the winding 120 through the second through hole 11074, thereby realizing independent lead-out of the inner and outer ends of the spiral coil 122.

[0244] Thus, it can be seen that, by respectively providing the first through hole 11072 and the second through hole 11074 for the inner and outer ends 1206 of the winding 120, nearby lead-out of the inner and outer ends 1206 of the winding 120 can be achieved, thereby shortening the lead-out distance between the ends of the winding 120 and the electrical connection assembly 160, improving the structural compactness of the coil disk 100, and providing convenient conditions for miniaturized and lightweight design of the coil disk 100.

[0245] As shown in FIGS. 47, 50, 51, and 52, in some embodiments of the present application, specifically, the electrical connection assembly 160 comprises: a wire 162 provided on the second side of the heat insulation component 110; a first terminal 164 passing through the through hole 1107 and the via hole 1307, where the first terminal 164 connects the winding 120 and a first end of the wire 162; and a second terminal 166 connected to a second end of the wire 162, where the second terminal 166 is configured to connect to a circuit board.

[0246] In this embodiment, the electrical connection assembly 160 comprises the wire 162, the first terminal 164, and the second terminal 166.

[0247] The wire 162 is arranged on the second side of the heat insulation component 110. The first terminal 164 is connected to the first end of the wire 162, and the second terminal 166 is connected to the second end of the wire 162. The wire 162 is connected to the winding 120 through the first terminal 164, and the wire 162 is connected to a power supply circuit on the circuit board through the second terminal 166. Specifically, the first terminal 164 may be inserted through the through hole 1107 and the via hole 1307 so as to connect the winding 120 on the first side of the heat insulation component 110, or the first terminal 164 may be fixed on the second side of the heat insulation component 110 and connected, through the first terminal 164, to the winding 120 extending through the through hole 1107 and the via hole 1307.

[0248] By providing the first terminal 164 and the second terminal 166, this structure achieves independent connection on both the winding 120 side and the circuit board side, so that the assembly step of the winding 120 and the electrical connection step can be performed independently, thereby achieving the technical effects of optimizing the structure of the electrical connection assembly 160, reducing the difficulty of electrical connection, and reducing the assembly complexity of the coil disk 100.

[0249] As shown in FIGS. 48, 50, and 53, in some embodiments of the present application, specifically, the wire 162 is at least partially attached to the second side of the support component 130, and the second terminal 166 is located on the peripheral side of the support component 130.

[0250] In this embodiment, the wire 162 is at least partially attached to the second side of the support component 130. The support component 130 can position and support the wire 162, thereby avoiding looseness or deformation of the wire 162 and improving the electrical connection reliability of the coil disk 100.

[0251] In this case, the second end of the wire 162 extends from the second side of the support component 130 to the peripheral side of the support component 130, to realize side lead-out of the coil disk 100 and avoid the wire 162 and the second terminal 166 occupying space on the second side of the support component 130, thereby reducing the thickness of the coil disk 100 and facilitating ultra-thin design of the coil disk 100 and the cooking device.

[0252] As shown in FIGS. 48 and 53, in some embodiments of the present application, specifically, the wire 162 comprises: a first wire 1622 connected to the inner end 1204 of the winding 120; and a second wire 1624 connected to the outer end 1206 of the winding 120. The first wire 1622 and the second wire 1624 are arranged side by side on the second side of the heat insulation component 110.

[0253] In this embodiment, the wire 162 comprises the first wire 1622 and the second wire 1624. The first wire 1622 is connected to the inner end 1204 of the winding 120 through the first terminal 164, and the first wire 1622 is connected to a power supply circuit on the circuit board through the second terminal 166. The second wire 1624 is connected to the outer end 1206 of the winding 120 through the first terminal 164, and the second terminal 166 is connected to a power supply circuit on the circuit board through the second terminal 166.

[0254] The first wire 1622 and the second wire 1624 are arranged side by side on the second side of the support component 130. Both the first wire 1622 and the second wire 1624 extend in the radial direction of the coil 122. The lead-out length of the first wire 1622 connected to the inner end 1204 of the winding 120 is longer, and the lead-out length of the second wire 1624 connected to the outer end 1206 of the winding 120 is shorter.

[0255] By means of the first wire 1622 and the second wire 1624, this structure realizes independent lead-out of the inner and outer ends 1206 of the winding 120. In addition, by arranging the first wire 1622 and the second wire 1624 side by side, the structural compactness of the electrical connection assembly 160 is improved, the space occupied by the electrical connection assembly 160 is reduced, and convenient conditions are provided for miniaturized and lightweight design of the coil disk 100.

[0256] As shown in FIGS. 48 and 49, in some embodiments of the present application, specifically, the second side of the support component 130 comprises a limit groove 1308, and the wire 162 is snap-fitted into the limit groove 1308.

[0257] In this embodiment, the second side of the support component 130 is provided with the limit groove 1308, and the shape and dimension of the limit groove 1308 are matched with those of the wire 162. Specifically, a wire clip and the limit groove 1308 may be integrally formed on the second side of the support component 130. During assembly, the wire 162 is pressed into the limit groove 1308 so that positioning and installation of the wire 162 on the second side of the support component 130 are completed, thereby reducing the possibility of misalignment or even detachment of the wire 162, and further achieving the technical effects of improving the positioning accuracy and positioning reliability of the wire 162 and improving the electrical connection reliability of the coil disk 100.

[0258] As shown in FIGS. 53 and 54, in some embodiments of the present application, specifically, the coil disk 100 further comprises a fixation member 170. The fixation member 170 is connected to the support component 130, and the wire 162 is clamped between the fixation member 170 and the support component 130.

[0259] In this embodiment, the coil disk 100 further comprises the fixation member 170. The fixation member 170 is provided on the second side of the support component 130 and connected to the support component 130. During assembly, the wire 162 is first placed at a predetermined installation position and preliminarily positioned by means of the limit groove 1308, and then the wire 162 is clamped at the support component 130 by means of the fixation member 170, to prevent the wire 162 from becoming misaligned or even detached on the support component 130.

[0260] Specifically, a single fixation member 170 may simultaneously fix the first wire 1622 and the second wire 1624 arranged side by side.

[0261] By providing the fixation member 170, the positioning accuracy of the wire 162 can be improved in cooperation with the limit groove 1308, thereby reducing the possibility of electrical connection failure caused by looseness and misalignment of the wire 162, further reducing the electrical connection failure rate of the coil disk 100, and improving the practicability and reliability of the coil disk 100.

[0262] In some embodiments of the present application, specifically, the winding 120 passes through the through hole 1107 and the via hole 1307; the winding 120 comprises a heating section and a connection section 1208. The heating section is spirally wound on the first side of the heat insulation component 110, and the connection section 1208 is connected to the electrical connection assembly 160 on the second side of the support component 130.

[0263] In this embodiment, the winding 120 passes through the through hole 1107 and the via hole 1307, and the inner end 1204 and the outer end 1206 of the winding 120 extend to the second side of the heat insulation component 110 through the through hole 1107 and the via hole 1307.

[0264] On this basis, the winding 120 comprises the heating section and the connection section 1208. The cross-sectional shape of the heating section is rectangular, and the heating section is wound on the first side of the heat insulation component 110 to form the coil 122.

[0265] The connection section 1208 is located on the second side of the heat insulation component 110, and extends toward the peripheral side of the heat insulation component 110. The electrical connection assembly 160 is connected to the connection section 1208 on the peripheral side of the heat insulation component 110.

[0266] In this structure, the connection section 1208 of the winding 120 directly serves as a lead-out structure. The electrical connection assembly 160 can complete the electrical connection operation between the inner and outer ends 1206 of the winding 120 and the connection section 1208 on the second side of the heat insulation component 110. This omits the steps of inserting the first terminal 164 into the through hole 1107, resistance-welding the first terminal 164, and arranging the wire 162 on the second side of the heat insulation component 110, reducing the connection difficulty between the electrical connection assembly 160 and the winding 120, and further achieving the technical effects of reducing the assembly difficulty and assembly complexity of the coil disk 100.

[0267] As shown in FIGS. 55 and 56, in some embodiments of the present application, specifically, the electrical connection assembly 160 further comprises a third terminal 168 connected to the connection section 1208.

[0268] In this embodiment, the electrical connection assembly 160 further comprises the third terminal 168. The third terminal 168 is connected to the connection section 1208 and is located on the peripheral side of the heat insulation component 110. The third terminal 168 is configured to connect to a power supply circuit on the circuit board.

[0269] Thus, it can be seen that, in this structure, assembly of the winding 120 and lead-out of the winding 120 can be completed simultaneously. Specifically, the heating section and the connection section 1208 can be formed on the heat insulation component 110 by split casting, and finally the assembly of the coil disk 100 can be completed simply by connecting the third terminal 168, thereby achieving the technical effects of reducing the structural complexity of the coil disk 100 and reducing the assembly difficulty of the coil disk 100.

[0270] As shown in FIGS. 55 and 56, in some embodiments of the present application, specifically, the connection section 1208 comprises a folded section 1209, and the folded section 1209 has a multilayer structure in the width direction of the winding 120.

[0271] In this embodiment, the connection section 1208 comprises the folded section 1209, and the folded section 1209 has a multilayer structure in the width direction of the winding 120. Specifically, the connection section 1208 can be obtained by transversely folding the strip-shaped winding 120.

[0272] The folded section 1209 formed by folding the winding 120 multiple times can increase the current-carrying capability of the connection section 1208, so that the connection section 1208 can satisfy the power supply requirement of the heating section, ensuring that the connection section 1208 can replace the function of the wire 162 and overcoming the current conduction limitation of directly using the winding 120 as the lead-out structure. Further, the technical effects of optimizing the structure of the winding 120, broadening the power range of the coil disk 100, and enhancing the heating performance of the coil disk 100 are achieved.

[0273] In some embodiments of the present application, specifically, the diameter of the through hole 1107 is a first diameter, and the first diameter is greater than or equal to 2.5 mm and less than or equal to 12.5 mm.

[0274] In this embodiment, the diameter of the through hole 1107 on the heat insulation component 110 is the first diameter. The first diameter needs to be greater than or equal to 2.5 mm and less than or equal to 12.5 mm.

[0275] By defining the first diameter as greater than or equal to 2.5 mm, it can be ensured that the width of the first terminal 164 or the winding 120 in the through hole 1107 can satisfy the overload current requirement, thereby ensuring that the conductive supply current matches the heating requirement.

[0276] By defining the first diameter as less than or equal to 12.5 mm, on the basis of meeting the power supply requirement, damage to the heat insulation component 110 caused by the through hole 1107 can be reduced, thereby ensuring that the heat insulation component 110 has sufficient rigidity, ensuring that the heat insulation component 110 can provide stable and effective support for the coil 122, and reducing the possibility of breakage of the heat insulation component 110.

[0277] Specifically, when the coil disk 100 is applied to an induction cooker, the first diameter is greater than or equal to 5 mm and less than or equal to 7 mm.

[0278] In some embodiments of the present application, specifically, the diameter of the via hole 1307 is a second diameter, and the second diameter is greater than the first diameter. The difference between the second diameter and the first diameter is greater than or equal to 2 mm.

[0279] In this embodiment, the diameter of the via hole 1307 on the heat insulation component 110 is the second diameter, and the second diameter is greater than the first diameter. Considering that the winding 120 or the first terminal 164 in the via hole 1307 may generate heat and that there may be installation deviation between the via hole 1307 and the through hole 1107 on the heat insulation component 110, the second diameter needs to be greater than the first diameter so as to realize heat dissipation through a gap formed by the size difference and compensate for assembly error through the size difference.

[0280] On this basis, by defining the difference between the second diameter and the first diameter as greater than or equal to 2 mm, damage to the support component 130 caused by the via hole 1307 can be reduced on the basis of meeting heat dissipation requirements and assembly error compensation requirements, thereby improving the structural strength of the support component 130 and reducing the failure rate of the support component 130.

[0281] As shown in FIGS. 48 and 53, in some embodiments of the present application, specifically, the coil disk 100 further comprises: a magnetic component 140 provided on the second side of the heat insulation component 110. The magnetic component 140 avoids the electrical connection assembly 160.

[0282] As shown in FIGS. 1, 2, 57, 58, 59, 60, and 61, an embodiment of the present application provides a coil disk 100. The coil disk 100 comprises: a heat insulation component 110; and a winding 120 provided at the heat insulation component 110. The winding 120 is spirally wound on the heat insulation component 110 to form a coil 122, and in the radial direction of the coil 122, the coil 122 comprises a plurality of layers. The distance between two adjacent layers is a radial spacing of the coil 122, and the coil 122 comprises a plurality of radial spacings. Among the plurality of radial spacings, at least one radial spacing is different from the other radial spacings.

[0283] In this embodiment, the spirally wound coil disk 100 comprises a plurality of layers in the radial direction, and the distance between two adjacent layers in the radial direction is the radial spacing of the coil 122 at that location. The radial spacing can reflect the density of winding of the coil 122 at that location.

[0284] The coil 122 comprises a plurality of radial spacings, and at least one radial spacing is different from the other radial spacings, that is, the size of the radial spacings can be changed according to requirements, and the winding density of the spiral winding of the coil 122 can be adjusted according to requirements.

[0285] By adjusting the winding density of the spiral winding of the coil 122, the heating capability of the coil disk 100 in different regions can be adjusted, thereby facilitating adjustment of the heating uniformity and heating range of the coil disk 100. For example, the radial spacing in an overheated region may be increased to make the winding 120 in the overheated region sparser, and correspondingly the radial spacing in a region with relatively poor heating capability may be decreased to make the winding 120 in that region denser. Further, the technical effects of optimizing the winding structure of the winding 120, improving the heating uniformity and heating reliability of the winding 120, and improving the quality of the cooked food are achieved.

[0286] Specifically, the electromagnetic heating capability and thermal-radiation heating capability of the coil disk 100 may be allocated by regulating the frequency of the driving current, to form various different heating modes.

[0287] Specifically, the winding 120 is made of a high-temperature-resistant metal material, and the winding 120 needs to withstand at least 600°C.

[0288] Specifically, the material of the heat insulation component 110 may be selected as white carbon black.

[0289] As shown in FIG. 57, in some embodiments of the present application, the winding 120 comprises a first segment 1224 and a second segment 1226 connected in series. The first segment 1224 comprises a plurality of first layers 12242, and the distance between two adjacent first layers 12242 is a first radial spacing X1, X3. The second segment 1226 comprises a plurality of second layers 12262, and the distance between two adjacent second layers 12262 is a second radial spacing X2. The second radial spacing X2 is greater than the first radial spacings X1 and X3.

[0290] In this embodiment, the winding 120 is divided into the first segment 1224 and the second segment 1226 according to the winding density of the winding 120. The first segment 1224 and the second segment 1226 are connected in series, and after spiral winding, the first segment 1224 and the second segment 1226 are distributed in a staggered manner in the radial direction of the coil 122.

[0291] Specifically, the first segment 1224 comprises a plurality of first layers 12242, and the distance between two adjacent first layers 12242 among the plurality of first layers 12242 is the first radial spacing X1, X3. The second segment 1226 comprises a plurality of second layers 12262, and the distance between two adjacent second layers 12262 among the plurality of second layers 12262 is the second radial spacing X2. The second radial spacing X2 is greater than the first radial spacings X1 and X3, that is, the winding 120 in the region where the first segment 1224 is located is wound more densely, and the winding 120 in the region where the second segment 1226 is located is wound more sparsely.

[0292] By dividing the coil 122 into the first segment 1224 and the second segment 1226 having different winding densities, the heating uniformity and heating range of the coil disk 100 can be adjusted, thereby achieving the technical effects of optimizing the winding structure of the winding 120, improving the heating uniformity and heating reliability of the winding 120, and improving the quality of the cooked food.

[0293] As shown in FIGS. 57, 58, 59, 60, and 61, in some embodiments of the present application, the number of first segments 1224 is N+1, the number of second segments 1226 is N, and N is an integer greater than or equal to 1. In the extension direction of the winding 120, the N+1 first segments 1224 and the N second segments 1226 are alternately connected in series.

[0294] In this embodiment, the winding 120 comprises N second segments 1226 and N+1 first segments 1224, and in the extension direction of the winding 120, the N+1 first segments 1224 and the N second segments 1226 are alternately connected in series. Specifically, both front and rear ends of the winding 120 are first segments 1224, and the second segments 1226 are interposed in the middle section of the winding 120.

[0295] By providing the first segments 1224 and the second segments 1226 alternately connected in series, the first segments 1224 and the second segments 1226 on the formed coil 122 can be uniformly distributed, thereby avoiding the electromagnetic heating function and infrared heating function being limited to a small-area region, and thus improving the heating uniformity of the coil disk 100.

[0296] Meanwhile, by arranging both ends of the winding 120 as the first segments 1224, the second segments 1226 can be located in the central region of the coil 122 and avoid the edge region, thereby ensuring that the second segments 1226 can concentratively heat the non-magnetically conductive cooking utensil 200 placed above the coil 122 and avoiding ineffective heating of the cooking utensil 200 by eccentrically located second segments 1226.

[0297] Specifically, N is an integer greater than or equal to 1. For example, one second segment 1226 and two first segments 1224 may be provided. Increasing N can increase the distribution levels of the first segments 1224 and the second segment 1226, to enhance heating uniformity.

[0298] Specifically, the winding 120 comprises two first segments 1224 and one second segment 1226, one first segment 1224 is located in the central region of the coil 122, another second segment 1226 is located in the edge region of the coil 122, and the second segment 1226 is located between the first segment 1224 and the second segment 1226.

[0299] The resonant electromagnetic heating of the spirally wound coil 122 will be concentrated in a region between 1 / 3 and 1 / 2 of the diameter of the coil 122. In this region, the winding 120 may be sparsely wound by providing the second segment 1226, to compensate for the concentration problem of electromagnetic heating.

[0300] As shown in FIG. 57, in some embodiments of the present application, the first segment 1224 and the second segment 1226 are wound along arcs.

[0301] In this embodiment, the first segment 1224 and the second segment 1226 are wound along arcs, and the axis of the arcs coincides with the axis of the coil 122 formed by winding. For example, the first segment 1224 and the second segment 1226 may be wound along a spiral line.

[0302] On this basis, by adjusting the curvature of the arcs, the winding density of the winding 120 can be correspondingly adjusted to form the first segment 1224 and the second segment 1226 having different densities.

[0303] By winding both the first segment 1224 and the second segment 1226 along arcs, the process complexity for forming the winding 120 can be reduced, to achieve the technical effect of reducing the manufacturing cost of the coil disk 100.

[0304] As shown in FIGS. 58, 59, and 60, in some embodiments of the present application, the first segment 1224 is wound along an arc; the second segment 1226 is wound along a broken line; and / or the second segment 1226 is wound along a wavy line.

[0305] In this embodiment, the first segment 1224 is wound along an arc, and the axis of the arc coincides with the axis of the coil 122 formed by winding. For example, the first segment 1224 may be wound along a spiral line. The second segment 1226 is wound along a broken line and / or a wavy line. Specifically, the second segment 1226 may be wound only along one of the broken line and the wavy line, or the first half of the second segment 1226 may be wound along a broken line and the second half thereof may be wound along a wavy line. No strict limitation is imposed thereon in this embodiment.

[0306] Compared with a relatively smooth arc, a wavy line and a broken line have a longer extension distance when wound through the same angle, thereby extending the transmission path of current in the second segment 1226 and correspondingly increasing the internal resistance of the second segment 1226. After energization, the first segment 1224 having a smaller internal resistance generates less heat and has a smaller amount of infrared radiation. Correspondingly, the electromagnetic field generated by the first segment 1224 is relatively stable and stronger. After energization, the second segment 1226 having a larger internal resistance generates more heat and has a larger amount of infrared radiation. Correspondingly, due to the shape change of the second segment 1226 caused by the wavy line or the broken line, the intensity of the generated electromagnetic field is lower.

[0307] Thus, it can be seen that, by defining the shape of the winding path of the winding 120, the allocation ratio between the electromagnetic heating capability and the infrared heating capability of different sections of the winding 120 can be adjusted. Specifically, more electromagnetic heating capability is allocated through an arcuate path, and more infrared heating capability is allocated through broken-line and wavy-line paths, so that the coil 122 can simultaneously satisfy the electromagnetic heating requirement of magnetically conductive cooking utensils 200 and the infrared heating requirement of non-magnetically conductive cooking utensils 200, thereby achieving the technical effects of optimizing the structure of the coil disk 100, broadening the heating functions of the coil disk 100, improving the practicability of the coil disk 100, and optimizing the user experience.

[0308] At the same time, the coil 122 wound along a broken line or a wavy line has relatively strong deformation resistance, which can reduce the possibility of local warping, toppling, or disengagement of the coil 122 during high-temperature heating.

[0309] Specifically, as shown in FIG. 58, one set of winding 120 may have multiple spiral combinations, and a wave shape may be provided at sparse-winding or dense-winding locations, to enhance anti-toppling performance and adjust the length of the winding 120 so as to further adjust impedance and inductive reactance, thereby improving the heating effect.

[0310] As shown in FIGS. 61, 62, 63, and 67, in some embodiments of the present application, the first segment 1224 is wound along a broken line, and / or the first segment 1224 is wound along a wavy line; and the second segment 1226 is wound along a broken line, and / or the second segment 1226 is wound along a wavy line.

[0311] In this embodiment, both the first segment 1224 and the second segment 1226 are wound along a wavy line or a broken line. They may be entirely wound along a wavy line, entirely wound along a broken line, or alternately wound along a wavy line and a broken line.

[0312] By superimposing sparse winding and dense winding on the basis that the entire coil 122 is provided with a multiple-wave effect, the length of the winding 120 can be effectively adjusted to adjust impedance and inductive reactance, while simultaneously achieving the effects of resonant heating and infrared heating. Further, this mechanism features superior manufacturing processes, anti-toppling protection, and balance adjustment of infrared and electromagnetic cold zones.

[0313] As shown in FIG. 64, when the winding 120 is arranged in a wavy shape, a local portion indicated by arrow k may form a triangular shape, thereby enhancing the anti-toppling effect of the winding 120.

[0314] As shown in FIGS. 58, 59, 60, and 61, in some embodiments of the present application, in the circumferential direction of the coil 122, the distance between two adjacent bent sections or the distance between two adjacent waves is a circumferential spacing of the coil 122; the first segment 1224 comprises a first circumferential spacing, the second segment 1226 comprises a second circumferential spacing, and the first circumferential spacing is greater than the second circumferential spacing.

[0315] In this embodiment, when the winding 120 is wound along a broken line or a wavy line, the coil 122 further comprises a circumferential spacing. Taking the example that the winding 120 is wound along a wavy line, the distance between adjacent crests and troughs in the circumferential direction of the coil 122 is the circumferential spacing. Taking the example that the winding 120 is wound along a broken line, the distance between adjacent broken-line segments in the circumferential direction of the coil 122 is the circumferential spacing. Different from the radial spacing, the circumferential spacing can reflect the density of the winding 120 in the circumferential direction.

[0316] On this basis, the first segment 1224 comprises a first circumferential spacing, and the second segment 1226 comprises a second circumferential spacing.

[0317] Specifically, as shown in FIG. 59, denser waves may be formed in the sparse-winding second segment 1226. The waves are not necessarily symmetrical about a central axis, but may be arranged to cover as much as possible the infrared cold zone caused by sparse winding, so that the effects of electromagnetic heating uniformity and non-attenuated infrared heating can be satisfied as much as possible.

[0318] As shown in FIG. 60, the sparse-winding second winding 126 may further be superimposed with small equally spaced waves, which not only maintains the original effect of the coil disk 100 shown in FIG. 59, but also improves the infrared heating effect by increasing the length of the winding 120. Furthermore, better mechanical performance is provided due to the superimposed equally spaced small waves.

[0319] As shown in FIG. 57, in some embodiments of the present application, the radial spacing is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0320] In this embodiment, X1, X2, and X3 in FIG. 57 respectively represent radial spacings of different segments. The radial spacing needs to be greater than or equal to 0.5 mm and less than or equal to 10 mm, and may specifically be selected to be greater than or equal to 2.5 mm and less than or equal to 5 mm. By defining the dimensional range of the radial spacing, on the one hand, the manufacturing process of the winding 120 can be simplified and production cost can be reduced; on the other hand, it is beneficial to improve the heating uniformity of the coil 122.

[0321] As shown in FIGS. 65 and 66, in some embodiments of the present application, in a center-line direction of the wavy line, the distance between two adjacent wave crests is the tooth pitch of the wavy line; the tooth pitch is greater than or equal to 1 mm and less than or equal to 15 mm.

[0322] In a direction perpendicular to the center line of the wavy line, the maximum distance between adjacent crests and troughs is the tooth height of the wavy line; the tooth height is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0323] In this embodiment, the height between the crest and the trough of the wavy line is the tooth height H5, and the distance between the first crest and the second crest is the tooth pitch L. H5 needs to be greater than or equal to 0.5 mm and less than or equal to 10 mm, and may specifically be selected to be greater than or equal to 1 mm and less than or equal to 2 mm. L needs to be greater than or equal to 1 mm and less than or equal to 15 mm, and may specifically be selected to be greater than or equal to 3.5 mm and less than or equal to 6.5 mm.

[0324] The values of the tooth height H5 and the tooth pitch L may be equal throughout the entire coil 122, or may gradually increase or alternate in size.

[0325] In an embodiment, the waves of the coil 122 are arranged in an equal manner, which is more compatible with low-cost production processes and provides better electrical performance. The principle is that the tooth pitch and center distance of the impeller used to press the wave are fixed, which allows more stable production. Equal wave shapes result in more balanced stress after heating, as reflected in better resistance to deformation after heating, more uniform heating area, and better heating uniformity.

[0326] Specifically, as shown in FIGS. 14 and 15, a local portion of the winding 120 may be arranged in a wavy shape or a broken-line shape. Specifically, a wavy shape may be provided at a turning portion, which can effectively reduce the heating toppling phenomenon caused by different inner and outer radii at the turn. It can also adjust the length of the winding 120 to adjust impedance and inductive reactance, thereby simultaneously achieving the effects of resonant heating and infrared heating.

[0327] As shown in FIG. 70, an embodiment of the present application provides a cooking device 300. The cooking device 300 comprises: a body 310; and the coil disk 100 according to any one of the above embodiments, provided at the body 310.

[0328] In this embodiment, the cooking device 300 provided with the coil disk 100 according to any one of the above embodiments is proposed. Therefore, the cooking device 300 has the advantages of the coil disk 100 according to any one of the above embodiments and can achieve the technical effects achievable by the coil disk 100 according to any one of the above embodiments. To avoid repetition, details are not repeated herein.

[0329] On this basis, the cooking device 300 further comprises the body 310. The body 310 is the main frame structure of the cooking device 300, and is configured to position, support, and protect other working structures on the cooking device 300. The coil disk 100 may be provided inside the body 310, or may be embedded at the top of the body 310, to heat the cooking utensil 200 placed on the cooking device 300 by means of the coil disk 100.

[0330] In the description of the present application, the term " a plurality of" refers to two or more. Unless otherwise expressly defined, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present application. The terms "connection, " "installation," and "fixation" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in the present application based on the specific circumstances.

[0331] In the description of the present application, the terms "an embodiment, " "some embodiments," and "specific embodiment" etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is comprised in at least one embodiment or example of the present application. In the present application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0332] The above descriptions are some embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations may be made to the present application. Any modification, equivalent replacement, improvement, and the like made within the spirit and principles of the present application shall fall within the scope of the present application.

Examples

Embodiment Construction

[0073]To enable a clearer understanding of the above objectives, features, and advantages of the present application, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, insofar as there is no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0074]Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0075]A coil disk and a cooking device according to some embodiments of the present application are described below with reference to FIGS. 1 to 70.

[0076]As shown in FIGS. 1, 2, 5, and 19, an embodiment of the pres...

Claims

1. A coil disk, <b>characterized by comprising: a heat insulation component; and a winding, provided at the heat insulation component, wherein the winding is in a strip shape, and the winding is spirally wound on the heat insulation component to form a coil, and the coil, when energized, is capable of generating an electromagnetic field and thermal radiation.

2. The coil disk according to claim 1, wherein the winding comprises: a first winding, wherein a dimension of the first winding in an axial direction of the coil is a first thickness, and a dimension of the first winding in a radial direction of the coil is a first width; the first width is greater than the first thickness; and a ratio of the first width to the first thickness is greater than or equal to 2.

3. The coil disk according to claim 1, wherein the winding further comprises: a second winding, wherein a dimension of the second winding in an axial direction of the coil is a second thickness, and a dimension of the second winding in a radial direction of the coil is a second width; the second thickness is greater than the second width; and a ratio of the second thickness to the second width is greater than or equal to 2.

4. The coil disk according to claim 1, wherein: a cross-sectional shape of the winding comprises: a rectangle, a trapezoid, a parallelogram, or an ellipse.

5. The coil disk according to claim 1, wherein: the coil comprises a plurality of layers in a radial direction, and the plurality of layers are circular or elliptical.

6. The coil disk according to claim 1, wherein: the coil comprises a plurality of layers in a radial direction, and the layers are polygonal.

7. The coil disk according to claim 1, wherein: the winding is a metal winding; and a melting point of the metal winding is greater than or equal to 600°C.

8. The coil disk according to any one of claims 1 to 7, further comprising: a support component connected to the heat insulation component; and a magnetic component provided between the support component and the heat insulation component.

9. The coil disk according to claim 8, wherein the heat insulation component comprises: a first heat insulation component, wherein the coil is provided on a first side of the first heat insulation component, and the magnetic component is provided on a second side of the first heat insulation component away from the coil; and a second heat insulation component, at least partially located between the first heat insulation component and the magnetic component, wherein the first heat insulation component and the second heat insulation component are made of different materials; wherein a first side of the support component comprises an accommodation groove, the coil and the first heat insulation component are provided in the accommodation groove, and the magnetic component is provided on a second side of the support component.

10. The coil disk according to claim 9, wherein: the second heat insulation component is located between the first heat insulation component and the magnetic component; and the second heat insulation component is provided between the first heat insulation component and the support component.

11. The coil disk according to claim 9, wherein: the second heat insulation component wraps the magnetic component.

12. The coil disk according to claim 9, wherein: a thickness of the first heat insulation component is greater than or equal to 4 mm and less than or equal to 9 mm.

13. The coil disk according to claim 12, wherein: the first heat insulation component comprises a slot, and the coil is partially inserted into the slot; and a depth of the slot is greater than or equal to 3 mm and less than or equal to 4 mm.

14. The coil disk according to claim 9, wherein: between the first heat insulation component and the magnetic component, a thickness of the second heat insulation component is greater than or equal to 1 mm and less than or equal to 5 mm.

15. The coil disk according to any one of claims 9 to 14, wherein: the first side of the first heat insulation component comprises a rib, and the rib and the coil are arranged in a staggered manner.

16. The coil disk according to claim 8, wherein: a center of the coil comprises an avoidance region; and a protrusion is provided on a side of the magnetic component facing the heat insulation component.

17. The coil disk according to claim 16, wherein: the protrusion is annular; and the protrusion and the coil share a common axis.

18. The coil disk according to claim 17, wherein: a plurality of protrusions are provided, and the plurality of protrusions are spaced apart in the radial direction of the coil.

19. The coil disk according to claim 18, wherein: among the plurality of protrusions, at least one protrusion is opposite to the avoidance region; and / or among the plurality of protrusions, at least one protrusion is located on a peripheral side of the avoidance region.

20. The coil disk according to claim 17, wherein the magnetic component comprises: a plurality of magnetic strips provided at the heat insulation component, wherein the plurality of magnetic strips extend in the radial direction of the coil, and the plurality of magnetic strips are spaced apart in a circumferential direction of the coil; and a first rib provided on a side of the plurality of magnetic strips facing the heat insulation component, wherein each magnetic strip comprises at least one first rib, and first ribs on the plurality of magnetic strips are combined to form an annular protrusion.

21. The coil disk according to claim 20, wherein: the magnetic component comprises a plurality of arrays, and each array comprises a plurality of the magnetic strips; and the plurality of magnetic strips belonging to a same array are distributed in a fan-shaped region.

22. The coil disk according to claim 21, wherein each array comprises: a first magnetic strip, wherein in the radial direction of the coil, both an inner end and an outer end of the first magnetic strip are provided with the first rib; and a second magnetic strip, wherein a length of the second magnetic strip is less than a length of the first magnetic strip, and in the radial direction of the coil, an outer end of the second magnetic strip is provided with the first rib.

23. The coil disk according to claim 17, wherein the magnetic component comprises: a plurality of magnetic sheets, wherein each magnetic sheet is fan-shaped, and the plurality of magnetic sheets are distributed in the circumferential direction of the coil; and a second rib provided on a side of the plurality of magnetic sheets facing the heat insulation component, wherein each magnetic sheet comprises at least one second rib, and second ribs on the plurality of magnetic sheets are combined to form an annular protrusion.

24. The coil disk according to claim 23, wherein: a second side of the support component comprises an installation groove, and the magnetic component is provided in the installation groove; and the support component further comprises an avoidance hole, and the protrusion partially passes through the avoidance hole.

25. The coil disk according to claim 24, wherein: a second side of the heat insulation component comprises an avoidance groove, and the protrusion is partially located in the avoidance groove.

26. The coil disk according to claim 20, wherein: in the axial direction of the coil, a distance between the coil and the plurality of magnetic strips is a first distance; and the first distance is greater than or equal to 4 mm and less than or equal to 9 mm.

27. The coil disk according to any one of claims 16 to 26, wherein the heat insulation component comprises a boss, the boss being located in the avoidance region, and the coil disk further comprises: a temperature sensor provided at the boss.

28. The coil disk according to claim 8, wherein the heat insulation component comprises a through hole, and the winding is wound on a first side of the heat insulation component to form the coil; and an electrical connection assembly at least partially provided on a second side of the heat insulation component; wherein the electrical connection assembly is connected to the winding through the through hole, or the winding partially extends to the second side of the heat insulation component through the through hole, and the electrical connection assembly is connected to the winding located on the second side of the heat insulation component; and the support component comprises a via hole opposite to the through hole, and the electrical connection assembly or the winding passes through the through hole and the via hole.

29. The coil disk according to claim 28, wherein: the winding is spirally wound on the first side of the heat insulation component; and the winding comprises an inner end and an outer end, the through hole comprises a first through hole and a second through hole, the electrical connection assembly is connected to the inner end of the winding through the first through hole, and the electrical connection assembly is connected to the outer end of the winding through the second through hole.

30. The coil disk according to claim 29, wherein the electrical connection assembly comprises: a wire provided on the second side of the heat insulation component; a first terminal passing through the through hole and the via hole, and connecting the winding and a first end of the wire; and a second terminal connected to a second end of the wire and configured to be connected to a circuit board.

31. The coil disk according to claim 30, wherein: the wire is at least partially attached to the second side of the support component, and the second terminal is located at a peripheral side of the support component.

32. The coil disk according to claim 30, wherein the wire comprises: a first wire connected to the inner end of the winding; and a second wire connected to the outer end of the winding, wherein the first wire and the second wire are arranged side by side on the second side of the heat insulation component.

33. The coil disk according to claim 30, wherein: the second side of the support component comprises a limit groove, and the wire is snapped into the limit groove.

34. The coil disk according to claim 30, further comprising: a fixation member connected to the support component, wherein the wire is clamped between the fixation member and the support component.

35. The coil disk according to claim 28, wherein: the winding passes through the through hole and the via hole; and the winding comprises a heating section and a connection section, wherein the heating section is spirally wound on the first side of the heat insulation component, and the connection section is connected to the electrical connection assembly on the second side of the support component.

36. The coil disk according to claim 35, wherein the electrical connection assembly further comprises: a third terminal connected to the connection section.

37. The coil disk according to claim 35, wherein: the connection section comprises a folded section, and the folded section has a multi-layered structure in a width direction of the winding.

38. The coil disk according to any one of claims 28 to 37, wherein: a diameter of the through hole is a first diameter, and the first diameter is greater than or equal to 2.5 mm and less than or equal to 12.5 mm.

39. The coil disk according to claim 38, wherein: a diameter of the via hole is a second diameter, and the second diameter is greater than the first diameter; and a difference between the second diameter and the first diameter is greater than or equal to 2 mm.

40. The coil disk according to any one of claims 1 to 39, wherein: in the radial direction of the coil, the coil comprises a plurality of layers; a distance between two adjacent layers is a radial spacing of the coil, and the coil comprises a plurality of radial spacings; and among the plurality of radial spacings, at least one radial spacing is different from other radial spacings.

41. The coil disk according to claim 40, wherein: the winding comprises a first segment and a second segment, and the first segment and the second segment are connected in series; the first segment comprises a plurality of first layers, and a distance between two adjacent first layers is a first radial spacing; the second segment comprises a plurality of second layers, and a distance between two adjacent second layers is a second radial spacing; and the second radial spacing is greater than the first radial spacing.

42. The coil disk according to claim 41, wherein: a number of the first segments is N+1, a number of the second segments is N, and N is an integer greater than or equal to 1; and in an extending direction of the winding, N+1 first segments and N second segments are alternately connected in series.

43. The coil disk according to claim 41, wherein: the first segment and the second segment are wound along an arc.

44. The coil disk according to claim 41, wherein: the first segment is wound along an arc; and the second segment is wound along a broken line and / or a wavy line.

45. The coil disk according to claim 41, wherein: the first segment is wound along a broken line and / or a wavy line; and the second segment is wound along a broken line and / or a wavy line.

46. The coil disk according to claim 45, wherein: in a circumferential direction of the coil, a distance between two adjacent bent segments or a distance between two adjacent waves is a circumferential spacing of the coil; and the first segment comprises a first circumferential spacing, the second segment comprises a second circumferential spacing, and the first circumferential spacing is greater than the second circumferential spacing.

47. The coil disk according to claim 41, wherein: the radial spacing is greater than or equal to 0.5 mm and less than or equal to 10 mm.

48. The coil disk according to claim 44 or 45, wherein: in a centerline direction of the wavy line, a distance between two adjacent wave crests is a tooth pitch of the wavy line; and the tooth pitch is greater than or equal to 1 mm and less than or equal to 15 mm.

49. The coil disk according to claim 44 or 45, wherein: in a direction perpendicular to a center line of the wavy line, a maximum value of a distance between adjacent wave crests and wave troughs is a tooth height of the wavy line; and the tooth height is greater than or equal to 0.5 mm and less than or equal to 10 mm.

50. A cooking device, <b>characterized by comprising: a body; and the coil disk according to any one of claims 1 to 49, wherein the coil disk is provided at the body.

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