Coil panel and cooking equipment

Abstract

The invention provides a coil panel and cooking equipment, and relates to the technical field of cooking equipment. The coil disc includes: a heat insulating member; the winding is arranged on the heat insulation part, the winding is in a strip shape, the winding is spirally wound on the heat insulation part to form a coil, and the electrified coil can generate an electromagnetic field and heat radiation.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking appliances, and more particularly, to a coil disk and a cooking appliance. Background Art

[0002] In the related art, induction heating appliances such as induction cookers belong to flameless heating, with fast heating speed and high safety. However, induction heating appliances have poor compatibility with the material and shape of cookware. For example, they can achieve better heating power and heating effect for metal cookware with high magnetic permeability, while they cannot heat non-metal cookware with low magnetic permeability.

[0003] To solve the above problems, the related art proposes a hybrid heating method, that is, adding a resistive heating wire on the basis of the original induction coil to generate heat through the heating wire when induction heating is not possible. However, this product requires adding an additional heating wire coil, resulting in a high cost. Therefore, how to overcome the above technical defects has become an urgent technical problem to be solved. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] For this reason, a first aspect of the present invention provides a coil disk.

[0006] A second aspect of the present invention provides a cooking appliance.

[0007] In view of this, a first aspect of the present invention provides a coil disk, which includes: a heat insulation component; a winding disposed on the heat insulation component, the winding being in a strip shape and spirally wound on the heat insulation component to form a coil, and the energized coil can generate an electromagnetic field and heat radiation.

[0008] This application defines a coil disk that has both electromagnetic heating function and heat radiation heating function. The coil disk includes a heat insulation component and a winding, and the winding is spirally wound on the heat insulation component. On the one hand, the heat insulation component can provide positioning and support for the winding, and on the other hand, the heat insulation component has excellent heat insulation performance and can prevent the heat transmitted from the winding from diffusing to the outside of the heat insulation component.

[0009] On this basis, the winding is in a strip shape, and the strip-shaped winding is spirally wound on the heat insulation component to wind a spiral coil on the heat insulation component. After the spiral coil is energized, it can generate an electromagnetic field above it, and at the same time, due to the certain internal resistance of the coil, the energized coil can also generate heat radiation.

[0010] Among them, the electromagnetic field strength and thermal radiation intensity generated by the coil can be distributed by changing the frequency of the supply current of the coil. Specifically, after a high-frequency current is applied to the coil, the coil 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 increases, the impedance of the coil itself also increases. When the impedance of the coil increases, the heat generated when the current passes through the coil also increases. Therefore, the coil itself can generate sufficient heat, and these heats are transferred to the cooking appliance to heat the cooking appliance.

[0011] During the working process, if a magnetic-conductive cooking appliance is placed above the coil disk, the magnetic-conductive cooking appliance resonates in the electromagnetic field and generates eddy currents. Under the action of the eddy currents, the magnetic-conductive cooking appliance is gradually heated up to cook food with the high-temperature magnetic-conductive cooking appliance. At the same time, the thermal radiation generated by the coil can also provide auxiliary heating to the magnetic-conductive cooking appliance to increase the heating power.

[0012] If a non-magnetic-conductive cooking appliance is placed above the coil disk, although the non-magnetic-conductive cooking appliance cannot generate eddy currents through resonance in the electromagnetic field, the thermal radiation generated by the coil can directly heat the non-magnetic-conductive cooking appliance, so as to cook food with the high-temperature non-magnetic-conductive cooking appliance. And because a large amount of thermal radiation is generated by the coil, when the user tosses the pot, the actual heating effect of the coil disk on the cooking appliance will not be affected by the position migration of the cooking appliance, thus simulating the effect of open-fire cooking.

[0013] It can be seen that the coil disk defined in this application has both electromagnetic heating ability and thermal radiation heating ability. When the cooking appliance type is a cooking appliance with a high magnetic permeability such as a metal cooking appliance, the cooking appliance is heated by the traditional induction heating method to form eddy current in the cooking appliance. When the cooking appliance type is a cooking appliance without a high magnetic permeability such as a non-metal cooking appliance, the impedance of the coil itself is increased based on the skin effect of the coil through a higher oscillation frequency. The coil is heated by increasing the impedance of the coil itself, and the cooking appliance is heated by the heat generated by the coil. Thus, without changing the hardware structure of the original induction heating cooking appliance, the induction heating cooking appliance can heat the non-metal cooking appliance, improving the versatility of the induction heating cooking appliance, and thus solving the high-cost technical problem existing in the related technology. Furthermore, the technical effects of optimizing the coil disk structure, broadening the applicable range of the coil disk, improving the practicability of the coil disk, and reducing the production cost of the coil disk are achieved.

[0014] Among them, by setting the winding as a strip shape, the contact area between the winding and the air can be increased, thereby strengthening the thermal radiation heating ability of the coil disk while retaining the electromagnetic heating ability.

[0015] On this basis, after processing, the winding presents a spiral shape. During the process of assembling the coil disk, the heat insulation component and some areas on the winding can be connected through the connecting mechanism to complete the fixation of the winding. Compared with the enameled wire winding process, the processed spiral winding does not need to be supported by a spiral bracket, and it can maintain its spiral shape by itself. Only a few scattered contact points are needed to fix the winding. Therefore, by selecting the processed spiral winding, the contact area between the winding and the heat insulation component can be reduced, correspondingly reducing the contact area between the winding and the heat insulation component, thereby reducing the heat transfer rate between the heat insulation component and the winding, and further reducing the temperature of the heat insulation component during operation.

[0016] Specifically, the electromagnetic heating capacity and the heat radiation heating capacity of the coil disk can be allocated by adjusting the frequency of the driving current to form a variety of different heating modes.

[0017] Specifically, the winding is made of a high-temperature-resistant metal material and the winding needs to withstand at least 600 °C.

[0018] Specifically, the material of the heat insulation component can be selected as silica white.

[0019] In addition, the above-mentioned coil disk provided by the present invention may also have the following additional technical features:

[0020] In some technical solutions of the present invention, optionally, the winding includes: a first winding, the first winding has a first thickness in the axial direction of the coil, and the first winding has 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.

[0021] In this technical solution, the winding includes a first winding, and the first winding is processed into a spiral first winding through a sheet-shaped base material. Specifically, by intercepting the first winding through a plane perpendicular to the extending trajectory of the first winding, a first cross-section can be obtained. The size of the first cross-section in the axial direction of the coil is the first thickness, and the size in the radial direction of the coil is the first width, where the first width is greater than the first thickness. During the assembly process, the sheet-shaped first winding can be laid flat on the heat insulation component.

[0022] By defining that the width of the first winding is greater than the thickness, on the basis of retaining the strip shape of the winding, the first winding has strong anti-deformation ability in the radial direction, so that the first winding on the heat insulation component can maintain its spiral shape without the help of other structures, avoiding the heating effect of the coil disk being affected by the uncontrollable deformation of the first winding. Furthermore, the technical effects of improving the structural strength of the first winding and the heating reliability of the coil disk are achieved.

[0023] Wherein, the ratio of the first width to the first thickness is greater than or equal to 2 to ensure that the first winding has a wide surface with sufficient area, thereby enhancing the heat radiation of the first winding.

[0024] Specifically, the sheet-shaped substrate can be processed into a spiral first winding through a machining process, and specifically, machining methods such as wire cutting, laser cutting, and blanking can be used.

[0025] The sheet-shaped substrate can also be chemically etched into a spiral shape by an etching solution.

[0026] Specifically, the range of the first thickness is: greater than or equal to 0.1 mm and less than or equal to 10 mm.

[0027] In this technical solution, the value range of the first thickness of the first winding is limited.

[0028] Specifically, by limiting the first thickness to be greater than or equal to 0.1 mm, it can ensure that the first winding has a certain anti-bending ability in the axial direction, reducing the possibility of the first winding warping or even breaking.

[0029] By limiting the first thickness to be less than or equal to 10 mm, the internal resistance of the first winding can be limited by restricting the cross-sectional area, so as to accurately distribute the electromagnetic heating ability and heat radiation heating ability of the first winding, and avoid the heat radiation heating ability from excessively occupying the electromagnetic heating ability.

[0030] Specifically, the first thickness is selected to be above 1 mm.

[0031] In some technical solutions of the present invention, optionally, the winding further includes: a second winding, the second winding has a second thickness in the axial direction of the coil, and the second winding has a second width in the radial direction of the coil; the second thickness is greater than the second width; the ratio of the second thickness to the second width is greater than or equal to 2.

[0032] In this technical solution, the winding includes a second winding, and the second winding is wound into a spiral shape by a strip-shaped substrate.

[0033] Specifically, by intercepting the second winding through a plane perpendicular to the extending trajectory of the second winding, a second cross-section can be obtained. The second cross-section has a second thickness in the axial direction of the coil and a second width in the radial direction of the coil, where the second width is less than the second thickness. After assembly, the wide sides of the strip-shaped second winding enclose the gaps between the layers, and the narrow sides of the strip-shaped second winding contact the heat insulation component.

[0034] By setting the second winding with a larger thickness and a smaller width, the contact area between the second winding and the heat insulation component can be reduced by the contact of the narrow sides, thereby reducing the heat transferred to the heat insulation component and lowering the working temperature of the heat insulation component.

[0035] Meanwhile, the strip-shaped second winding can be wound into a bundle during transportation, which can reduce the transportation difficulty and cost.

[0036] Wherein, the ratio of the second thickness to the second width is greater than or equal to 2 to ensure that the second winding has a wide surface with sufficient area, thereby increasing the heat radiation amount of the second winding.

[0037] Specifically, the range of the second width is: greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0038] In this technical solution, the value range of the second width of the second winding is limited.

[0039] Specifically, by limiting the second width to be greater than or equal to 0.1 mm, it can ensure that the second winding has a certain anti-bending ability in the radial direction and reduce the possibility of the second winding warping or even breaking.

[0040] By limiting the second width to be less than or equal to 0.2 mm, on the one hand, the internal resistance of the second winding can be limited by restricting the cross-sectional area, and on the other hand, the second winding can be wound into a bundle more conveniently, providing convenient conditions for the lightweight design of the second winding.

[0041] Specifically, the second winding is wavy in the extending direction.

[0042] In this technical solution, the second winding is wavy in the extending direction. By setting the wavy second winding, effective support can be provided to the second winding itself through the corresponding narrow sides of the wave shape, thereby reducing the possibility of the second winding tilting or even falling over, and further achieving the technical effect of improving the structural stability of the second winding. At the same time, by configuring the second winding into a wave shape, it is also beneficial to increase the interval between adjacent two layers and reduce the possibility of short circuit due to contact between adjacent two layers, and further achieve the technical effect of improving the safety and reliability of the coil disk.

[0043] In some technical solutions of the present invention, optionally, the cross-sectional shape of the winding includes: rectangle, trapezoid, parallelogram or ellipse.

[0044] In this technical solution, the cross-sectional shape of the winding includes: rectangle, trapezoid, parallelogram or ellipse. The cross-sectional shapes of different segments of the same winding can be different, as long as the requirement of increasing the heat radiation amount through the strip shape is met.

[0045] Specifically, the cross-section of the winding further includes a racetrack shape. The racetrack-shaped winding has two straight edges, which can facilitate laying the winding flat on the heat insulation component.

[0046] In some technical solutions of the present invention, optionally, the coil includes a plurality of layers in the radial direction, and the layers are circular or elliptical.

[0047] In this technical solution, during the spiral winding process, the winding forms multiple layers, where each layer has the same shape but different dimensions. On this basis, each layer of the coil is circular or elliptical, so that the formed coil can adapt to the circular bottom surface of common cooking utensils on the market, ensuring that the coil disk can provide effective heating for the cooking utensils.

[0048] In some technical solutions of the present invention, optionally, the coil includes multiple layers in the radial direction, and the layers are polygonal.

[0049] In this technical solution, during the spiral winding process, the winding forms multiple layers, where each layer has the same shape but different dimensions. On this basis, each layer of the coil is polygonal, and specifically, each layer of the coil can be selected as a regular hexagon. By constructing the layers of the coil as polygonal, the winding difficulty of the winding can be reduced, and the number of winding positioning points on the heat insulation component can be reduced, thereby achieving the technical effects of reducing the process complexity of the coil disk and the cost of the coil disk.

[0050] In some technical solutions of the present invention, optionally, the winding is a metal winding; the melting point of the metal winding is greater than or equal to 600 °C.

[0051] In this technical solution, the winding is prepared from a high-temperature resistant material, and the melting point of this high-temperature resistant metal is greater than or equal to 600 °C, so as to ensure that the winding will not melt under the high-power thermal radiation heating mode, thereby achieving the technical effects of improving the reliability of the coil disk and reducing the failure rate of the coil disk.

[0052] In some technical solutions of the present invention, optionally, the coil disk further includes: a support component connected to the heat insulation component; a magnetic component disposed between the support component and the heat insulation component.

[0053] In this technical solution, the coil disk further includes a support component and a magnetic component. The support component is connected to the heat insulation component, and the support component can provide support and protection for the heat insulation component and the winding. Among them, the thermal radiation generated by the coil after being energized is blocked by the heat insulation component to reduce the working temperature of the support component and prevent the support component from melting at high temperatures.

[0054] On this basis, the coil disk further includes a magnetic component. The magnetic component is disposed on the support component, and the magnetic component is located between the support component and the coil. By setting the magnetic component, the distribution of the electromagnetic field on the side of the coil away from the cooking utensil can be changed, so that the electromagnetic field generated by the coil can be concentrated and used on the side where the cooking utensil is located, so as to perform concentrated heating on the cooking utensil, achieving the technical effects of improving the electromagnetic heating efficiency and the electromagnetic heating energy efficiency.

[0055] In some technical solutions of the present invention, optionally, the support component includes an installation groove, and the winding, the heat insulation component, and the magnetic component are located in the installation groove.

[0056] In this technical solution, the support component includes a bottom wall and a side wall. The side wall surrounds the bottom wall on all sides, and the bottom wall and the side wall enclose an installation groove. After assembly, the heat insulation component and the magnetic component are located inside the installation groove, and the surrounding side wall can provide shielding and protection for the magnetic component, the heat insulation component, and the winding.

[0057] Specifically, the bottom wall of the support component is provided with a groove, and the shape of the groove is adapted to the shape of the magnetic component. The magnetic component is embedded in the groove to reduce the possibility of the magnetic component being misaligned or even falling off.

[0058] In some technical solutions of the present invention, optionally, the magnetic component is strip-shaped, and the length direction of the magnetic component is consistent with the radial direction of the coil.

[0059] In this technical solution, the magnetic component is strip-shaped, and the length direction of the magnetic component is consistent with the radial direction of the coil. By arranging the magnetic component along the radial direction of the coil, the deflection effect of the electromagnetic field can be improved to concentrate the electromagnetic field on the cooking appliance on the other side.

[0060] On this basis, the number of magnetic components is multiple, and the multiple magnetic components are evenly distributed in the circumferential direction of the coil. By arranging multiple evenly distributed magnetic components, the dead angle of magnetic field deflection on the side of the coil away from the cooking appliance can be avoided, thereby further improving the electromagnetic heating effect of the coil disk.

[0061] On this basis, the number of magnetic components is multiple, and the multiple magnetic components are evenly distributed in the circumferential direction of the coil. By arranging multiple evenly distributed magnetic components, the dead angle of magnetic field deflection on the side of the coil away from the cooking appliance can be avoided, thereby further improving the electromagnetic heating effect of the coil disk.

[0062] The second aspect of the present invention provides a cooking device, which includes: a main body; a coil disk as described in any of the above technical solutions, provided on the main body.

[0063] In this technical solution, a cooking device provided with the coil disk as described in any of the above technical solutions is proposed. Therefore, this cooking device has the advantages of the coil disk as described in any of the above technical solutions and can achieve the technical effects that the coil disk as described in any of the above technical solutions can achieve. To avoid repetition, it will not be elaborated here.

[0064] On this basis, the cooking device further includes a main body. The main body is the main frame structure of the cooking device, and the main body is used to position, support, and protect other working structures on the cooking device. The coil disk can be arranged inside the main body, and the coil disk can also be embedded on the top of the main body to heat the cooking appliance placed on the cooking device through the coil disk.

[0065] Additional aspects and advantages of the present invention will become apparent in the following description section or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0067] Figure 1 An exploded view of a coil disk according to an embodiment of the present invention is shown;

[0068] Figure 2 A schematic structural diagram of a coil disk according to an embodiment of the present invention is shown;

[0069] Figure 3 A schematic structural diagram of a coil according to an embodiment of the present invention is shown;

[0070] Figure 4 is Figure 3 A partial enlarged view of the coil in the A region in the shown embodiment;

[0071] Figure 5 A schematic structural diagram of a coil according to an embodiment of the present invention is shown;

[0072] Figure 6 is Figure 5 A partial enlarged view of the coil in the B region in the shown embodiment;

[0073] Figure 7 A cross-sectional view of a winding according to an embodiment of the present invention is shown;

[0074] Figure 8 A cross-sectional view of a winding according to an embodiment of the present invention is shown;

[0075] Figure 9 A cross-sectional view of a winding according to an embodiment of the present invention is shown;

[0076] Figure 10 A cross-sectional view of a winding according to an embodiment of the present invention is shown;

[0077] Figure 11 A cross-sectional view of a winding according to an embodiment of the present invention is shown;

[0078] Figure 12 A schematic structural diagram of a coil according to an embodiment of the present invention is shown;

[0079] Figure 13 A schematic structural diagram of a coil according to an embodiment of the present invention is shown;

[0080] Figure 14Shows a schematic structural diagram of a coil according to an embodiment of the present invention;

[0081] Figure 15 Shows an exploded view of a coil disk according to an embodiment of the present invention;

[0082] Figure 16 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0083] Figure 17 Shows an exploded view of a coil disk according to an embodiment of the present invention;

[0084] Figure 18 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0085] Figure 19 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0086] Figure 20 Shows a schematic structural diagram of a cooking device according to an embodiment of the present invention.

[0087] Wherein, Figures 1 to 20 The corresponding relationship between the reference numerals and the component names in is:

[0088] 100 Coil disk, 110 Heat insulation component, 120 Winding, 122 Coil, 1222 Coil layer, 124 First winding, 126 Second winding, 130 Support component, 1302 Installation groove, 140 Magnetic part, 200 Cooking appliance, 300 Cooking device, 310 Body. Detailed implementation manners

[0089] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0090] Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0091] The following refers to Figures 1 to 20 Describe a coil disk and a cooking device according to some embodiments of the present invention.

[0092] Such as Figure 1 , Figure 2 , Figure 5 And Figure 19As shown in the figure, an embodiment of the present invention provides a coil disk 100, which includes: a heat insulation component 110; and a winding 120 disposed on the heat insulation component 110. The winding 120 is in a strip shape and is spirally wound on the heat insulation component 110 to form a coil 122. The energized coil 122 can generate an electromagnetic field and thermal radiation.

[0093] This application defines a coil disk 100, which has electromagnetic heating function and thermal radiation heating function. The coil disk 100 includes 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 provide positioning and support for the winding 120. On the other hand, the heat insulation component 110 has excellent heat insulation performance and can prevent the heat transferred from the winding 120 from diffusing to the outside of the heat insulation component 110.

[0094] On this basis, the winding 120 is in a strip shape and is spirally wound on the heat insulation component 110 to wind 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, due to the certain internal resistance of the coil 122, the energized coil 122 can also generate thermal radiation.

[0095] Among them, the intensity of the electromagnetic field and the intensity of the thermal radiation generated by the coil 122 can be allocated by changing the frequency of the supply current of the coil 122. Specifically, after a high-frequency current is passed into the coil 122, the coil 122 can not only generate an electromagnetic field, but also generate heat due to the action of its own impedance. Specifically, when the frequency of the alternating current passed into the coil 122 increases, the impedance of the coil 122 itself will also increase. After the impedance of the coil 122 increases, the heat generated when the current passes through the coil 122 will also increase. Therefore, the coil 122 can generate enough heat by itself, and these heats are transferred to the cooking appliance 200 to heat the cooking appliance 200.

[0096] During the working process, if a magnetic conductive cooking appliance 200 is placed above the coil disk 100, the magnetic conductive cooking appliance 200 will resonate in the electromagnetic field and generate eddy currents. Under the action of the eddy currents, the magnetic conductive cooking appliance 200 is gradually heated up to cook food through the high-temperature magnetic conductive cooking appliance 200. At the same time, the thermal radiation generated by the coil 122 can also provide auxiliary heating for the magnetic conductive cooking appliance 200 to improve the heating power.

[0097] If a non-magnetic cooking utensil 200 is placed above the coil disk 100, although the non-magnetic cooking utensil 200 cannot generate eddy currents through resonance in the electromagnetic field, the heat radiation generated by the coil 122 can directly heat the non-magnetic cooking utensil 200, so as to cook food through the high-temperature non-magnetic cooking utensil 200. And because a large amount of heat radiation is generated by the coil 122, when the user tosses the pan, the actual heating effect of the coil disk 100 on the cooking utensil 200 will not be affected by the position migration of the cooking utensil 200, thus simulating the effect of open-fire cooking.

[0098] It can be seen that the coil disk 100 defined in the present application has both electromagnetic heating ability and heat radiation heating ability at the same time. When the cooking utensil 200 is a metal cooking utensil 200 or other cooking utensils 200 with a relatively high magnetic permeability, the cooking utensil 200 is heated by forming eddy currents in the cooking utensil 200 through traditional inductive heating. When the cooking utensil 200 is a non-metal cooking utensil 200 or other cooking utensils 200 with a relatively low magnetic permeability, through a higher oscillation frequency, based on the skin effect of the coil 122, the self-impedance of the coil 122 is increased, and the coil 122 is heated by increasing the self-impedance of the coil 122, and the cooking utensil 200 is heated by the heat generated by the coil 122. Thus, without changing the original hardware structure of the inductive heating cooking utensil 200, the inductive heating cooking utensil 200 can heat the non-metal cooking utensil 200, improving the versatility of the inductive heating cooking utensil 200, and thus solving the high-cost technical problems existing in the related art. Furthermore, the technical effects of optimizing the structure of the coil disk 100, broadening the applicable range of the coil disk 100, enhancing the practicality of the coil disk 100, and reducing the production cost of the coil disk 100 are achieved.

[0099] Among them, by setting the winding 120 in a strip shape, the contact area between the winding 120 and the air can be increased, so as to strengthen the heat radiation heating ability of the coil disk 100 on the basis of retaining the electromagnetic heating ability.

[0100] On this basis, after processing, the winding 120 presents a spiral shape. During the assembly of the coil disk 100, the winding 120 can be fixed by connecting the heat insulation part 110 and some areas on the winding 120 through a connecting mechanism. Compared with the enameled wire winding process, the processed spiral winding 120 does not need to be supported by a spiral bracket, and it can maintain its spiral shape by itself. Only a few scattered contact points are needed to fix the winding 120. Therefore, by selecting the processed spiral winding 120, the contact area between the winding 120 and the heat insulation part 110 can be reduced, correspondingly reducing the contact area between the winding 120 and the heat insulation part 110, thereby reducing the heat transfer rate between the heat insulation part 110 and the winding 120, and further reducing the temperature of the heat insulation part 110 during the working process.

[0101] Specifically, the electromagnetic heating capacity and the thermal radiation heating capacity of the coil disk 100 can be allocated by adjusting the frequency of the driving current to form a variety of different heating modes.

[0102] Specifically, the winding 120 is made of a high-temperature resistant metal material and the winding 120 needs to withstand at least 600 °C.

[0103] Specifically, the material of the heat insulation component 110 can be selected as silica white.

[0104] Such as Figure 3 and Figure 4 As shown in [drawings not provided], in some embodiments of the present invention, optionally, the winding 120 includes: a first winding 124, the first winding 124 has a first thickness T1 in the axial direction of the coil 122, and the first winding 124 has a first width W1 in the radial direction of the coil 122; the first width W1 is greater than the first thickness T1; the ratio of the first width W1 to the first thickness T1 is greater than or equal to 2.

[0105] Figure 3 In [drawings not provided], the arrow a shows the axial direction of the coil 122, and the arrow b shows the radial direction of the coil 122.

[0106] In this embodiment, the winding 120 includes a first winding 124, and the first winding 124 is processed into a spiral shape through a sheet-shaped base material. Specifically, by intercepting the first winding 124 along a plane perpendicular to the extending trajectory of the first winding 124, a first cross-section can be obtained. The first cross-section has a first thickness T1 in the axial direction of the coil 122 and a first width W1 in the radial direction of the coil 122, where the first width W1 is greater than the first thickness T1. During the assembly process, the sheet-shaped first winding 124 can be laid flat on the heat insulation component 110.

[0107] By defining that the width of the first winding 124 is greater than the thickness, on the basis of maintaining the strip shape of the winding 120, the first winding 124 can have strong anti-deformation ability in the radial direction, so that the first winding 124 on the heat insulation component 110 can maintain the spiral shape without the help of other structures, avoiding the heating effect of the coil disk 100 being affected by the uncontrollable deformation of the first winding 124. Furthermore, the technical effects of improving the structural strength of the first winding 124 and the heating reliability of the coil disk 100 are achieved.

[0108] Wherein, 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 wide surface with sufficient area, thereby increasing the thermal radiation amount of the first winding 124.

[0109] Specifically, the sheet-shaped substrate can be processed into a spiral first winding 124 through a machining process, and specifically, machining methods such as wire cutting, laser cutting, and blanking can be adopted.

[0110] The sheet-shaped substrate can also be chemically etched into a spiral shape by an etching solution.

[0111] 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.

[0112] In this embodiment, the value range of the first thickness T1 of the first winding 124 is limited.

[0113] Specifically, by limiting the first thickness T1 to be greater than or equal to 0.1 mm, it can ensure that the first winding 124 has a certain anti-bending ability in the axial direction, reducing the possibility of the first winding 124 warping or even breaking.

[0114] By limiting the first thickness T1 to be less than or equal to 10 mm, the internal resistance of the first winding 124 can be limited by restricting the cross-sectional area, so as to accurately distribute the electromagnetic heating ability and the thermal radiation heating ability of the first winding 124, and avoid the thermal radiation heating ability from overly occupying the electromagnetic heating ability.

[0115] Specifically, the first thickness T1 is selected to be more than 1 mm.

[0116] Such as Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the winding 120 further includes: a second winding 126. The second winding 126 has a second thickness T2 in the axial direction of the coil 122, and the second winding 126 has a second width W2 in the radial direction of the coil 122; the second thickness T2 is greater than the second width W2; the ratio of the second thickness T2 to the second width W2 is greater than or equal to 2.

[0117] Figure 5 In , the arrow c shows the axial direction of the coil 122, and the arrow d shows the radial direction of the coil 122.

[0118] In this embodiment, the winding 120 includes a second winding 126, and the second winding 126 is wound into a spiral shape by a strip-shaped substrate.

[0119] Specifically, by intercepting the second winding 126 through a plane perpendicular to the extending trajectory 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 in the radial direction of the coil 122 is the second width W2, where the second width W2 is less than the second thickness T2. After assembly, the wide sides of the strip-shaped second winding 126 enclose the gaps between the respective layers 1222, and the narrow sides of the strip-shaped second winding 126 contact the heat insulation component 110.

[0120] By setting the second winding 126 with a larger thickness and a smaller width, the contact area between the second winding 126 and the heat insulation component 110 can be reduced by contacting with the narrow sides, thereby reducing the heat transferred to the heat insulation component 110 and lowering the operating temperature of the heat insulation component 110.

[0121] At the same time, the strip-shaped second winding 126 can be wound into a bundle during transportation, which can reduce the transportation difficulty and cost.

[0122] Wherein, the ratio of the second thickness T2 to the second width W2 is greater than or equal to 2 to ensure that the second winding 126 has a wide surface with sufficient area, thereby enhancing the heat radiation amount of the second winding 126.

[0123] Specifically, the range of the second width W2 is: greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0124] In this embodiment, the value range of the second width W2 of the second winding 126 is limited.

[0125] Specifically, by limiting the second width W2 to be greater than or equal to 0.1 mm, it can ensure that the second winding 126 has a certain anti-bending ability in the radial direction, reducing the possibility of the second winding 126 warping or even breaking.

[0126] By limiting the second width W2 to be less than or equal to 0.2 mm, on the one hand, the internal resistance of the second winding 126 can be limited by restricting the cross-sectional area, and on the other hand, the second winding 126 can be wound into a bundle more conveniently, providing convenient conditions for the lightweight design of the second winding 126.

[0127] Specifically, the second winding 126 is wavy in the extending direction.

[0128] In this embodiment, the second winding 126 is wavy in the extending direction. By arranging the wavy second winding 126, effective support can be provided for the second winding 126 itself through the corresponding narrow sides of the wave shape, thereby reducing the possibility of the second winding 126 tilting or even falling over, and further achieving the technical effect of improving the structural stability of the second winding 126. At the same time, by configuring the second winding 126 into a wavy shape, it is also beneficial to increase the interval between two adjacent layers 1222, reduce the possibility of short circuit caused by the contact between two adjacent layers 1222, and further achieve the technical effect of improving the safety and reliability of the coil disk 100.

[0129] As Figure 7 , Figure 8 , Figure 9 and Figure 10 shown, in some embodiments of the present invention, optionally, the cross-sectional shape of the winding 120 includes: rectangle, trapezoid, parallelogram or ellipse.

[0130] In this embodiment, the cross-sectional shape of the winding 120 includes: rectangle, trapezoid, parallelogram or ellipse. The cross-sectional shapes of different segments of the same winding 120 can be different, as long as the requirement of improving the heat radiation amount through the strip shape is met.

[0131] Specifically, as Figure 11 shown, the cross-section of the winding 120 further includes a racetrack shape. The racetrack-shaped winding 120 has two straight sides, which can facilitate laying the winding 120 flat on the heat insulation component 110.

[0132] As Figure 12 and Figure 14 shown, in some embodiments of the present invention, optionally, the coil 122 includes a plurality of layers 1222 in the radial direction, and the layers 1222 are circular or elliptical.

[0133] Figure 12 , Figure 13 and Figure 14 The arrow e in , and shows the radial direction of the coil.

[0134] In this embodiment, the winding 120 forms a plurality of layers 1222 during the spiral winding process, and the shape of each layer 1222 is the same but the size is different. On this basis, each layer 1222 of the coil 122 is circular or elliptical, so that the formed coil 122 can adapt to the circular bottom surface of the common cooking utensils 200 on the market, ensuring that the coil disk 100 can provide effective heating for the cooking utensils 200.

[0135] As Figure 13 shown, in some embodiments of the present invention, optionally, the coil 122 includes a plurality of layers 1222 in the radial direction, and the layers 1222 are polygonal.

[0136] In this embodiment, during the spiral winding process of the winding 120, a plurality of turns 1222 are formed, and each turn 1222 has the same shape but different dimensions. On this basis, each turn 1222 of the coil 122 is polygonal, and specifically, each turn 1222 of the coil 122 can be selected as a regular hexagon. By constructing the turns 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 the cost of the coil disk 100.

[0137] In some embodiments of the present invention, optionally, the winding 120 is a metal winding; the melting point of the metal winding is greater than or equal to 600 °C.

[0138] In this embodiment, the winding 120 is prepared from a high-temperature resistant material, and the melting point of the high-temperature resistant metal is greater than or equal to 600 °C, so as to ensure that the winding 120 will not melt under the 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.

[0139] In some technical solutions of the present invention, optionally, the coil disk 100 further includes: pins, which are arranged on the winding 120, and at least part of the pins are inserted into the heat insulation component 110.

[0140] In this technical solution, the coil disk 100 is further provided with pins, the pins are connected to the winding 120, and the pins are located on the side of the winding 120 facing the heat insulation component 110. Among them, the number of pins is multiple, and the multiple pins are spaced apart in the extending direction of the winding 120.

[0141] By providing the pins, the winding 120 can be inserted onto the heat insulation component 110 during the assembly process. On the one hand, the pins can be used to position the winding 120 and limit the deformation of the winding 120. On the other hand, the assembly difficulty of the winding 120 and the structural complexity of the coil disk 100 can be simplified.

[0142] Among them, when selecting a heat insulation component 110 with a higher hardness, jacks can be reserved on the heat insulation component 110, and the pins can be correspondingly inserted into the jacks to complete the assembly of the winding 120.

[0143] When selecting a heat insulation component 110 with a lower hardness, insertion marks can be set on the heat insulation component 110, and the pins aligned with the insertion marks can be correspondingly inserted into the heat insulation component 110 to complete the assembly.

[0144] Such as Figure 15 、 Figure 16 、 Figure 17 and Figure 18As shown, in some embodiments of the present invention, optionally, the coil disk 100 further includes: a support member 130 connected to the heat insulation member 110; and a magnetic member 140 disposed between the support member 130 and the heat insulation member 110.

[0145] In this embodiment, the coil disk 100 further includes a support member 130 and a magnetic member 140. The support member 130 is connected to the heat insulation member 110, and the support member 130 can provide support and protection for the heat insulation member 110 and the winding 120. Among them, the heat radiation generated by the coil 122 after being energized is blocked by the heat insulation member 110 to reduce the working temperature of the support member 130 and prevent the support member 130 from melting at high temperatures.

[0146] On this basis, the coil disk 100 further includes a magnetic member 140. The magnetic member 140 is disposed on the support member 130 and is located between the support member 130 and the coil 122. By providing the magnetic member 140, the distribution of the electromagnetic field on the side of the coil 122 away from the cooking appliance 200 can be changed, so that the electromagnetic field generated by the coil 122 can be concentrated and used on the side where the cooking appliance 200 is located to perform concentrated heating on the cooking appliance 200, achieving the technical effects of improving the electromagnetic heating efficiency and the electromagnetic heating energy efficiency.

[0147] As Figure 15 、 Figure 16 、 Figure 17 and Figure 18 shown, in some embodiments of the present invention, optionally, the support member 130 includes a mounting groove 1302, and the winding 120, the heat insulation member 110, and the magnetic member 140 are located in the mounting groove 1302.

[0148] In this embodiment, the support member 130 includes a bottom wall and a side wall. The side wall surrounds the bottom wall. The bottom wall and the side wall enclose the mounting groove 1302. After assembly, the heat insulation member 110 and the magnetic member 140 are located inside the mounting groove 1302, and the surrounding side wall can provide shielding and protection for the magnetic member 140, the heat insulation member 110, and the winding 120.

[0149] Specifically, the bottom wall of the support member 130 is provided with a groove, and the shape of the groove is adapted to the shape of the magnetic member 140. The magnetic member 140 is embedded in the groove to reduce the possibility of the magnetic member 140 being misaligned or even falling off.

[0150] As Figure 17 shown, in some embodiments of the present invention, optionally, the magnetic member 140 is strip-shaped, and the length direction of the magnetic member 140 is consistent with the radial direction of the coil 122.

[0151] In this embodiment, the magnetic member 140 is strip-shaped, and the length direction of the magnetic member 140 is consistent with the radial direction of the coil 122. By arranging the magnetic member 140 along the radial direction of the coil 122, the deflection effect of the electromagnetic field can be improved, so that the electromagnetic field acts intensively on the cooking appliance 200 on the other side.

[0152] On this basis, the number of the magnetic members 140 is multiple, and the multiple magnetic members 140 are evenly distributed in the circumferential direction of the coil 122. By arranging the multiple evenly distributed magnetic members 140, the magnetic field deflection dead angle on the side of the coil 122 away from the cooking appliance 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0153] On this basis, the number of the magnetic members 140 is multiple, and the multiple magnetic members 140 are evenly distributed in the circumferential direction of the coil 122. By arranging the multiple evenly distributed magnetic members 140, the magnetic field deflection dead angle on the side of the coil 122 away from the cooking appliance 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0154] As Figure 20 shown, an embodiment of the present invention provides a cooking device 300, which includes: a main body 310; a coil disk 100 as in any of the above embodiments, provided on the main body 310.

[0155] In this embodiment, a cooking device 300 provided with the coil disk 100 as in any of the above embodiments is proposed. Therefore, the cooking device 300 has the advantages of the coil disk 100 in any of the above embodiments and can achieve the technical effects that the coil disk 100 in any of the above embodiments can achieve. To avoid repetition, it will not be elaborated here.

[0156] On this basis, the cooking device 300 further includes a main body 310. The main body 310 is the main frame structure of the cooking device 300. The main body 310 is used to position, support and protect other working structures on the cooking device 300. The coil disk 100 can be arranged inside the main body 310, and the coil disk 100 can also be embedded on the top of the main body 310 to heat the cooking appliance 200 placed on the cooking device 300 through the coil disk 100.

[0157] It should be clear that in the claims, the specification and the drawings of the present invention, the term "a plurality of" means two or more, unless otherwise clearly defined. The orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. This is only for more conveniently describing the present invention and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on the present invention; terms such as "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances of the above data.

[0158] In the claims, the specification and the drawings of the present invention, the description of terms such as "an embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, the specification and the drawings of the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0159] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A coil disc, characterized in that, it includes: a heat insulation component; a winding, arranged on the heat insulation component, the winding is strip-shaped, and the winding is spirally wound on the heat insulation component to form a coil, and the energized coil can generate an electromagnetic field and heat radiation.

2. The coil disc according to claim 1, characterized in that, the winding includes: a first winding, the first winding has a first thickness in the axial direction of the coil, and the first winding has 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.

3. The coil disc according to claim 1, characterized in that, the winding further includes: a second winding, the second winding has a second thickness in the axial direction of the coil, and the second winding has a second width in the radial direction of the coil; the second thickness is greater than the second width; the ratio of the second thickness to the second width is greater than or equal to 2.

4. The coil disc according to claim 1, characterized in that, the cross-sectional shape of the winding includes: rectangle, trapezoid, parallelogram or ellipse.

5. The coil disc according to claim 1, characterized in that, the coil includes a plurality of layers in the radial direction, and the layers are circular or elliptical.

6. The coil disc according to claim 1, characterized in that, the coil includes a plurality of layers in the radial direction, and the layers are polygonal.

7. The coil disc according to claim 1, characterized in that, the winding is a metal winding; the melting point of the metal winding is greater than or equal to 600 °C.

8. The coil disc according to any one of claims 1 to 7, characterized in that, it further includes: a support component, connected to the heat insulation component; a magnetic component, arranged between the support component and the heat insulation component.

9. The coil disc according to claim 8, characterized in that, the support component includes a mounting groove, and the winding, the heat insulation component and the magnetic component are located in the mounting groove.

10. The coil disc according to claim 8, characterized in that, the magnetic component is strip-shaped, and the length direction of the magnetic component is consistent with the radial direction of the coil.

11. A cooking device, characterized in that, it includes: a main body; the coil disc according to any one of claims 1 to 10, arranged on the main body.

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