Coil panel and cooking equipment

Abstract

The utility model 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 coil is arranged on the first side of the heat insulation part and can generate heat radiation and an electromagnetic field after being electrified, and the center of the coil comprises a receding area; the magnetic part is arranged on the second side, away from the coil, of the heat insulation part, and a protruding part is arranged on the side, facing the heat insulation part, of the magnetic part.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking equipment, in particular to a coil plate and cooking equipment. Background Art

[0002] In the related art, a coil disk heats cooking utensils through a coil, and a temperature measuring device is provided on the coil disk. To ensure the temperature measurement accuracy, the coil needs to avoid the temperature measuring device, causing the area corresponding to the temperature measuring device to become a heating cold zone, so that the coil disk has a technical defect of poor heating uniformity.

[0003] Therefore, how to overcome the above-mentioned technical defects has become a technical problem that needs to be solved urgently. Utility Model Content

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

[0005] To this end, a first aspect of the utility model provides a coil disk.

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

[0007] In view of this, the first aspect of the utility model provides a coil disk, which includes: a heat-insulating component; a coil, which is arranged on a first side of the heat-insulating component, and can generate thermal radiation and an electromagnetic field when the coil is energized, and the center of the coil includes an air-avoiding area; a magnetic component, which is arranged on a second side of the heat-insulating component away from the coil, and a protrusion is provided on the side of the magnetic component facing the heat-insulating component.

[0008] The present application defines a coil disk having electromagnetic heating function and thermal radiation heating function.

[0009] The coil disk includes a coil, and the winding is spirally wound to form a spiral coil. When the spiral coil is energized, an electromagnetic field can be generated thereon. At the same time, due to the existence of a certain internal resistance of the coil, the energized coil can also generate heat radiation at the same time.

[0010] Among them, the electromagnetic field intensity and heat radiation intensity generated by the coil can be distributed by changing the frequency of the power supply current of the coil. Optionally, after a high-frequency current is passed through the coil, the coil can not only generate an electromagnetic field, but also generate heat due to its own impedance. When the coil assembly resonates with the resonant capacitor at a higher resonant frequency, the impedance value of the coil itself will increase significantly due to the skin effect of the coil. When the impedance of the coil increases, the heat generated when the current passes through the coil will also increase. Therefore, the coil itself can generate enough heat, which is transferred to the cooking utensil to heat the cooking utensil.

[0011] During operation, if a magnetic cooking utensil is placed above the coil disk, the magnetic cooking utensil will resonate in the electromagnetic field and generate eddy currents. Under the action of the eddy currents, the magnetic cooking utensil gradually heats up, so that food can be cooked by the high-temperature magnetic cooking utensil. At the same time, the heat radiation generated by the coil can also provide auxiliary heating for the magnetic cooking utensil to increase the heating power.

[0012] If a non-magnetic cooking utensil is placed on top of the coil disk, although the non-magnetic cooking utensil cannot generate eddy currents through resonance in the electromagnetic field, the heat radiation generated by the coil can directly heat the non-magnetic cooking utensil, thereby cooking food with the high-temperature non-magnetic cooking utensil. And because the coil generates a large amount of heat radiation, when the user flips the pot, the actual heating effect of the coil disk on the cooking utensil will not be affected by the migration of the cooking utensil, thereby simulating the effect of open flame cooking.

[0013] The coil disk also includes a heat insulating component and a magnetic component, the magnetic component is arranged opposite to the coil, and the magnetic component is located on the side of the coil away from the cooking utensil. By arranging 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 on the side where the cooking utensil is located, so as to heat the cooking utensil in a centralized manner, thereby achieving the technical effect of improving the electromagnetic heating efficiency and electromagnetic heating energy efficiency.

[0014] The heat insulation component is arranged between the coil and the magnetic component, the first side of the heat insulation component faces the cooking utensil, the coil is arranged on the first side of the heat insulation component, the second side of the heat insulation component faces away from the cooking utensil, and the magnetic component is arranged on the second side of the heat insulation component. The heat insulation component has excellent heat insulation performance, which can reduce the heat diffused from the high-temperature cooking utensil and the high-temperature coil to the magnetic component, so that the magnetic component is kept at a low temperature during operation, avoiding high-temperature demagnetization of the magnetic component, and ensuring the working reliability of the coil disk.

[0015] Optionally, a clearing area is formed in the middle of the coil, in which no winding is arranged, and the clearing area can be used to install a temperature sensor, which is used to detect the temperature of the cooking utensil above the coil, so as to control the power of the coil according to the detected temperature value. Since no winding is arranged in the clearing area, the coil has less interference with the temperature sensor in the process of heating the cooking utensil, which can reduce the temperature measurement error, but the clearing area correspondingly loses the ability to heat the cooking utensil, forming a heating cold zone, resulting in the heating effect of the area on the cooking utensil opposite to the clearing area being weaker than that of other areas, resulting in a technical defect of uneven heating.

[0016] On this basis, a protrusion is provided on the magnetic part, and the protrusion is provided on the side of the magnetic part facing the heat insulation component. After the coil is energized, the magnetic part can concentrate the electromagnetic field to the side where the coil is located. The protrusion protruding toward the direction of the coil can concentrate the electromagnetic field to the air avoidance area in the center of the coil, so as to improve the magnetic field strength in the air avoidance area without changing the coil power, reduce the heating gap between the air avoidance area and other surrounding areas, and avoid forming an obvious cold area on the cooking utensil, thereby alleviating the technical defects existing in the relevant technology, and then achieving the technical effect of optimizing the coil disk structure and improving the heating uniformity and heating reliability of the coil disk.

[0017] Optionally, the raw material of the winding wound into the coil is a high-temperature resistant metal material, and the linear expansion coefficient of the high-temperature resistant metal material is low to avoid high-temperature damage or high-temperature deformation of the coil. Specifically, the coil can be prepared by copper alloy or iron alloy.

[0018] Optionally, the material of the heat insulation component can be a mixture of white carbon black and moissanite, or can be flexible vacuum silicon insulation wool.

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

[0020] In some technical solutions of the present utility model, optionally, the protrusion is ring-shaped; the protrusion and the coil share a common axis.

[0021] In this technical solution, the protrusion on the magnetic part is annular, and the specific protrusion can be an uninterrupted annular structure or an intermittent annular structure with multiple intervals. By setting the protrusion in an annular shape, the magnetic field can be gathered in multiple directions or even in all directions, so that the magnetic field can be concentrated to the air-avoiding area in the center of the coil, thereby improving the heating capacity of the air-avoiding area.

[0022] The annular protrusion shares an axis with the spirally wound coil. The axis is located in the air avoidance area. By arranging the coil and the protrusion coaxially, the annular protrusion can enhance the gathering effect of the magnetic field generated by the coil, so that the magnetic field generated by the spiral coil can be gathered to the air avoidance area where the axis is located, avoiding the gathered magnetic field from deviating from the air avoidance area, thereby compensating for the heating loss in the air avoidance area.

[0023] In some technical solutions of the present utility model, optionally, there are multiple protrusions, and the multiple protrusions are distributed at intervals in the radial direction of the coil.

[0024] In this technical solution, on the basis of the protrusion being annular, a plurality of protrusions are arranged on the side of the magnetic part facing the coil, wherein the plurality of protrusions have different sizes and are spaced apart in the radial direction of the coil, that is, the plurality of protrusions are nested.

[0025] By providing multiple nested protrusions on the magnetic part, multiple barriers can be formed in the radial direction of the coil to enhance the effect of the magnetic field converging toward the center of the coil, thereby enhancing the electromagnetic heating capacity of the air-avoiding area and avoiding the appearance of obvious heating cold zones on the cooking utensil.

[0026] Optionally, the number of protrusions can be adjusted according to parameters such as the size of the coil, the size of the cooking utensil that is frequently heated, and the rated heating power. This technical solution does not impose a rigid limitation on this, and it only needs to meet the heating uniformity requirements of the cooking utensil.

[0027] In some technical solutions of the present invention, optionally, among the multiple protrusions, at least one protrusion is opposite to the air avoidance area; and / or among the multiple protrusions, at least one protrusion is located on the peripheral side of the air avoidance area.

[0028] In this technical solution, among the multiple annular protrusions, at least one protrusion is opposite to the air avoidance area, that is, it is located inside the air avoidance area. When the coil is energized, the electromagnetic field will be concentrated along the protrusion toward the air avoidance area opposite to it, so as to increase the magnetic field strength of the air avoidance area and enhance the heating effect of the air avoidance area.

[0029] Correspondingly, among the multiple annular protrusions, at least one protrusion is opposite to the area where the windings are located around the air avoidance area, that is, it is located on the side around the air avoidance area. When the coil is energized, the protrusion located on the side around the air avoidance area will suppress the tendency of the electromagnetic field to spread around, thereby increasing the magnetic field strength in the air avoidance area and enhancing the heating effect of the air avoidance area.

[0030] Optionally, annular protrusions may be provided on both the inner side and the peripheral side of the air avoidance area to reduce the heating difference between the air avoidance area and the area where the surrounding windings are located.

[0031] In some technical solutions of the utility model, optionally, the magnetic part includes: a magnetic strip, which is provided on the thermal insulation component, the magnetic strip extends in the radial direction of the coil, the number of the magnetic strips is multiple, and the multiple magnetic strips are spaced apart in the circumferential direction of the coil; a first rib, which is provided on the side of the magnetic strip facing the thermal insulation component, each magnetic strip includes at least one first rib, and the first ribs on the multiple magnetic strips are combined into an annular protrusion.

[0032] In this technical solution, the magnetic part includes multiple magnetic strips, which extend in the radial direction of the coil and are spaced apart along the circumferential direction of the coil. Specifically, the multiple magnetic strips can be evenly distributed below the coil, that is, the angles between two adjacent magnetic strips among the multiple magnetic strips are the same.

[0033] On this basis, each of the multiple magnetic strips is provided with at least one first rib, and there is an angle between the extension direction of the first rib on the magnetic strip and the radial direction of the coil. For example, a strip-shaped first rib perpendicular to the radial direction of the coil can be provided, or an arc-shaped first rib extending on a circle with the axis of the coil as the axis can be provided.

[0034] The first convex ribs on the plurality of magnetic strips are combined to form an annular and discontinuous protrusion, the first convex rib is not included between two adjacent magnetic strips, and there is a gap on the corresponding protrusion.

[0035] When there are multiple annular protrusions in the radial direction of the coil, multiple first ribs are correspondingly arranged on at least some of the multiple magnetic strips, and the multiple first ribs are arranged at intervals in the length direction of the magnetic strips to combine multiple inner and outer nested protrusions.

[0036] This structure can reasonably utilize the magnetic strip structure under the coil, specifically by providing ribs on the magnetic strip to form an annular protrusion, so as to reduce the difficulty and cost of improving the coil disk while meeting the magnetic field gathering requirements and improving the heating capacity of the air avoidance area.

[0037] In some technical solutions of the present invention, optionally, the magnetic element includes a plurality of arrays, each array includes a plurality of magnetic strips; and the plurality of magnetic strips belonging to the same array are distributed in a sector-shaped area.

[0038] In this technical solution, the magnetic member includes multiple arrays, each array includes multiple magnetic strips, each array corresponds to a sector below the coil, and the multiple arrays are spliced ​​below the coil to form an annular protrusion below the coil.

[0039] Optionally, the gathering effect of the magnetic field can be adjusted by adjusting the number of arrays and the number of magnetic strips contained in each array. For example, when higher heating uniformity requirements are required, the number of arrays and the number of magnetic strips in the arrays can be increased, and vice versa.

[0040] In some technical solutions of the utility model, optionally, the array includes: a first magnetic strip, wherein the inner end and the outer end of the first magnetic strip are both provided with a first rib in the radial direction of the coil; and a second magnetic strip, wherein the length of the second magnetic strip is smaller than the length of the first magnetic strip, wherein the outer end of the second magnetic strip is provided with a first rib in the radial direction of the coil.

[0041] In this technical solution, the magnetic member includes two inner and outer protrusions, wherein the outer protrusion is located around the air avoidance area, and the inner protrusion is opposite to the air avoidance area.

[0042] On this basis, the array includes a first magnetic stripe and a second magnetic stripe, which are distinguished by their length and the number of first convex ribs thereon. The first magnetic stripe is longer, and first convex ribs are provided at both ends of the first magnetic stripe, and the first magnetic stripe is U-shaped when viewed from the side. The second magnetic stripe is shorter than the first magnetic stripe, and the second magnetic stripe is only provided with first convex ribs at the outer end, and the second magnetic stripe is L-shaped when viewed from the side.

[0043] After assembling multiple arrays, the first rib at the outer end of the first magnetic strip cooperates with the first rib at the outer end of the second magnetic strip to form a protrusion located around the air avoidance area, and the first rib at the inner end of the first magnetic strip forms a protrusion opposite to the air avoidance area.

[0044] It can be seen that by setting a shorter second magnetic strip in conjunction with the first magnetic strip, the small-sized area in the center can be reasonably avoided, and a protrusion with a smaller circumferential size can be formed by combining only a few first convex ribs at the inner ends of the first magnetic strips to avoid the accumulation of multiple magnetic strips in the central area and interference. At the same time, the first convex rib at the outer end of the first magnetic strip and the first convex rib at the outer end of the second magnetic strip can be combined to ensure the density of the protrusions on the side of the avoidance area, avoiding the protrusions with larger circumferential sizes on the outer side being too sparse. This can thereby achieve the technical effect of improving the electromagnetic field gathering effect and gathering uniformity, and improving the heating uniformity and reliability of the coil disk.

[0045] In some technical solutions of the utility model, optionally, the magnetic part includes: a magnetic sheet, which is fan-shaped, and there are multiple magnetic sheets, and the multiple magnetic sheets are distributed in the circumferential direction of the coil; a second rib, which is arranged on the side of the magnetic sheet facing the thermal insulation component, each magnetic sheet includes at least one second rib, and the second ribs on the multiple magnetic sheets are combined into an annular protrusion.

[0046] In this technical solution, the magnetic member includes a plurality of magnetic sheets, each of which is fan-shaped. Each magnetic sheet corresponds to a sector below the coil, and the plurality of magnetic sheets are assembled to form a ring-shaped magnetic member below the coil.

[0047] On this basis, second ribs are provided at the inner and outer ends of the magnetic sheets. The second ribs at the outer ends of multiple magnetic sheets are combined to form a protrusion around the air avoidance area, and the second ribs at the inner ends of multiple magnetic sheets are combined to form a protrusion opposite to the air avoidance area, thereby forming an inner and outer magnetic field gathering structure.

[0048] Compared with the magnetic strip solution, the magnetic sheet has a higher coverage rate under the coil, and even multiple tightly fitted magnetic sheets can cover the entire area under the coil to reduce the magnetic field strength under the magnetic sheet and improve the effect of the magnetic component to gather the magnetic field upward. At the same time, compared with the magnetic strip solution, the gap on the protrusion formed by multiple magnetic sheets is smaller, and even the gap can be eliminated by tightly fitting, thereby improving the effect of the protrusion gathering the magnetic field to the center of the coil and improving the heating capacity of the air-avoiding area.

[0049] In some technical solutions of the present invention, optionally, the coil disk further includes: a supporting component, a first side of the supporting component includes a receiving groove, the heat insulating component and the coil are arranged in the receiving groove, and the magnetic component is arranged on the second side of the supporting component.

[0050] In this technical solution, the coil disk also includes a support component, which is connected to the heat insulation component and can provide support and protection for the heat insulation component and the coil. After power is turned on, the heat radiation generated by the coil is blocked by the heat insulation component to reduce the working temperature of the support component and avoid high-temperature melting of the support component.

[0051] The support component is formed with a receiving groove, the receiving groove faces the cooking utensil, and the heat insulating component and the coil are arranged in the receiving groove. The magnetic component is fixed on the support component, and during the assembly process, the magnetic component is first assembled to the support component, and then the heat insulating component and the coil are installed in the receiving groove, and the heat insulating component and the support component are fixedly connected.

[0052] In some technical solutions of the present invention, optionally, the second side of the supporting component includes a mounting groove, and the magnetic member is arranged in the mounting groove; the supporting component also includes a through hole, and the protrusion partially passes through the through hole.

[0053] In this technical solution, the support component is formed of a non-magnetic material to prevent the support component from interfering with the coil and the magnetic component. On this basis, a mounting groove is provided on the side of the support component away from the heat insulation component, that is, the mounting groove and the receiving groove are opposite to each other, and the shape of the mounting groove is adapted to the outer contour of the magnetic component, so that the magnetic component can be embedded in the mounting groove.

[0054] By embedding the magnetic part on the side of the support component away from the heat insulation component, the support assembly can form a second barrier on the basis of the heat insulation component, further reducing the heat diffused to the magnetic part. At the same time, the installation slot on the back of the support component can provide convenient conditions for disassembly and assembly of the magnetic part on the one hand, and can improve the heat dissipation effect of the magnetic part by exposing the magnetic part on the other hand.

[0055] On this basis, a through hole is also provided on the support component, the through hole is connected to the mounting groove, and the through hole passes through the support component. During the assembly process, the magnetic strip or magnetic sheet is embedded in the mounting groove, and the first convex rib or the second convex rib is inserted into the through hole. The through hole for accommodating the protrusion can, on the one hand, improve the structural compactness of the coil disk, reduce the thickness of the coil disk, and provide convenient conditions for the miniaturization design of the coil disk. On the other hand, the protrusion that passes through the support component can enhance the effect of the magnetic field converging to the air avoidance area, and reduce the influence of structural obstruction on the magnetic field convergence.

[0056] In some technical solutions of the present utility model, optionally, the second side of the heat insulating component includes an avoidance groove, and the protrusion is partially located in the avoidance groove.

[0057] In this technical solution, a side of the heat insulation component facing the support component is provided with an avoidance groove, which is opposite to the through hole on the support component. After assembly, the protrusion passing through the through hole is inserted into the avoidance groove. The avoidance groove for plugging the protrusion can cooperate with the through hole to further improve the structural compactness of the coil disk, reduce the thickness of the coil disk, and provide convenient conditions for the miniaturization design of the coil disk. On the other hand, the distance between the protrusion and the coil can be shortened to improve the effect of the magnetic field gathering to the avoidance area, reducing the influence of structural obstruction on the magnetic field gathering.

[0058] In some technical solutions of the present invention, optionally, in the axial direction of the coil, the distance between the coil and the magnetic strip is a first distance; the range of the first distance is: greater than or equal to 4 mm and less than or equal to 9 mm.

[0059] In this technical solution, in the axial direction of the coil, the distance between the coil and the magnetic strip is a first distance, and the first distance can be reduced by providing the aforementioned through hole and avoidance groove.

[0060] Optionally, the first distance needs to be greater than or equal to 4 mm and less than or equal to 9 mm. Specifically, the first distance can be controlled between 5 mm and 7 mm.

[0061] While ensuring the thickness and rigidity of the thermal insulation component, reducing the first distance can reduce the number of magnetic strips. Taking this embodiment as an example, when the thickness of the thermal insulation component is selected to be 7 mm, the total number of magnetic strips is 23. If the thickness of the thermal insulation component is reduced to 5 mm, the number of magnetic strips can be reduced to 17.

[0062] It can be seen that reducing the first distance is beneficial to reducing the cost and structural complexity of the coil disk.

[0063] Optionally, the material of the heat insulating component can be a mixture of white carbon black, or other materials with good heat insulating properties, which must meet the requirement of being inserted into the high temperature winding. To ensure that the 3.5 mm winding pin can be inserted, the thickness of the heat insulating component prepared only by white carbon black needs to be controlled to at least 12 mm. Now, the heat insulating component prepared by selecting a mixture of white carbon black or other materials with stronger heat insulating properties can control the thickness to 4-9 mm to meet the requirement of the first distance mentioned above.

[0064] In some technical solutions of the present utility model, optionally, the heat insulating component includes a boss, the boss is located in the air-avoiding area, and the coil disk further includes: a temperature sensor, which is arranged on the boss.

[0065] In this technical solution, a boss is provided on the side of the heat-insulating component facing away from the magnetic component, and the position of the boss overlaps with the position of the air-avoiding area. After assembly, the coil surrounds the air-avoiding area.

[0066] On this basis, a temperature sensor is set on the boss, which can detect the temperature value of the cooking utensil above the coil disk. The controller can then adjust the power of the coil according to the temperature value to ensure that the current heating power matches the heating requirements.

[0067] By setting a boss, the temperature sensor can be raised so that the temperature sensor and the coil are staggered, thereby reducing the interference of the coil on the temperature sensor and making the temperature value detected by the temperature sensor closer to the actual temperature of the cooking utensil, thereby achieving the technical effect of improving the detection accuracy of the temperature sensor and improving the heating reliability of the coil disk.

[0068] A second aspect of the utility model provides a cooking device, which includes: a body; and a coil disk as in any of the above technical solutions, which is arranged on the body.

[0069] In this technical solution, a cooking device provided with the coil disk in any of the above technical solutions is proposed, so the cooking device has the advantages of the coil disk in any of the above technical solutions and can achieve the technical effects that can be achieved by the coil disk in any of the above technical solutions. To avoid repetition, it will not be described here.

[0070] On this basis, the cooking device also includes a body, which is the main frame structure of the cooking device. The body is used to position, support and protect other working structures on the cooking device. The coil disk can be set inside the body, and the coil disk can also be embedded on the top of the body to heat the cooking utensils placed on the cooking device through the coil disk.

[0071] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0073] Figure 1 A schematic structural diagram of a coil disk according to an embodiment of the utility model is shown;

[0074] Figure 2 An exploded view of a coil disk according to an embodiment of the present invention is shown;

[0075] Figure 3 A schematic structural diagram of a coil disk according to an embodiment of the utility model is shown;

[0076] Figure 4 A schematic structural diagram of a coil disk according to an embodiment of the utility model is shown;

[0077] Figure 5 A schematic structural diagram of an array according to an embodiment of the utility model is shown;

[0078] Figure 6 A schematic structural diagram of a magnetic component according to an embodiment of the utility model is shown;

[0079] Figure 7 A schematic structural diagram of a coil disk according to an embodiment of the utility model is shown;

[0080] Figure 8 A schematic structural diagram of a coil disk according to an embodiment of the utility model is shown;

[0081] Fig. 9 A schematic structural diagram of a magnetic sheet according to an embodiment of the utility model is shown;

[0082] Fig.10 A schematic structural diagram of a magnetic component according to an embodiment of the utility model is shown;

[0083] Fig.11 A schematic structural diagram of a coil disk according to an embodiment of the utility model is shown;

[0084] Fig.12 A schematic structural diagram of a magnetic component according to an embodiment of the utility model is shown.

[0085] in, Figures 1 to 12 The corresponding relationship between the reference numerals and component names in the figure is:

[0086] 100 coil disk, 110 heat insulation component, 1102 avoidance groove, 1104 boss, 120 coil, 122 avoidance area, 130 magnetic member, 132 protrusion, 1322 first rib, 1324 second rib, 134 magnetic strip, 1342 array, 1344 first magnetic strip, 1346 second magnetic strip, 136 magnetic sheet, 140 supporting component, 1402 accommodating groove, 1404 mounting groove, 1406 through hole, 150 temperature sensor, 200 cooking utensil. DETAILED DESCRIPTION

[0087] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0088] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0089] Refer to the following Figures 1 to 12 A coil pan and a cooking device according to some embodiments of the present invention are described.

[0090] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, an embodiment of the utility model provides a coil disk 100, which includes: a heat insulating component 110; a coil 120, which is arranged on a first side of the heat insulating component 110, and the coil 120 can generate thermal radiation and an electromagnetic field when energized, and the center of the coil 120 includes an air-avoiding area 122; a magnetic component 130, which is arranged on a second side of the heat insulating component 110 away from the coil 120, and a protrusion 132 is provided on the side of the magnetic component 130 facing the heat insulating component 110.

[0091] Figure 1 The arrow a in the middle shows the transfer direction of the heat radiation generated by the coil 120 .

[0092] Figure 2 Arrow b shows the axial direction of the coil 120 , corresponding to the thickness direction of the coil disk 100 , arrow c shows the radial direction of the coil 120 , and arrow d shows the circumferential direction of the coil 120 .

[0093] Figure 8 The arrow e in the middle shows the direction of the magnetic field shrinking.

[0094] The present application defines a coil disk 100 , which has electromagnetic heating function and thermal radiation heating function.

[0095] The coil disk 100 includes a coil 120 , and the winding is spirally wound to form a spiral coil 120 . When the spiral coil 120 is energized, an electromagnetic field can be generated thereon. At the same time, since the coil 120 has a certain internal resistance, the energized coil 120 can also generate heat radiation at the same time.

[0096] The electromagnetic field intensity and heat radiation intensity generated by the coil 120 can be distributed by changing the frequency of the power supply current of the coil 120. Optionally, after a high-frequency current is passed through the coil 120, the coil 120 can not only generate an electromagnetic field, but also generate heat due to its own impedance. When the coil 120 component resonates with the resonant capacitor at a higher resonant frequency, the impedance value of the coil 120 itself will be significantly increased due to the skin effect of the coil 120. When the impedance of the coil 120 is increased, the heat generated when the current passes through the coil 120 will also increase. Therefore, the coil 120 itself can generate enough heat, which is transferred to the cooking utensil 200 to heat the cooking utensil 200.

[0097] During operation, if a magnetic cooking utensil 200 is placed above the coil disk 100, the magnetic cooking utensil 200 will resonate in the electromagnetic field and generate eddy currents. Under the action of the eddy currents, the magnetic cooking utensil 200 will gradually heat up, so that food can be cooked by the high-temperature magnetic cooking utensil 200. At the same time, the heat radiation generated by the coil 120 can also provide auxiliary heating for the magnetic cooking utensil 200 to increase the heating power.

[0098] If a non-magnetic cooking utensil 200 is placed on 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 120 can directly heat the non-magnetic cooking utensil 200, thereby cooking food with the high-temperature non-magnetic cooking utensil 200. In addition, since the coil 120 generates a large amount of heat radiation, when the user flips the pot, the actual heating effect of the coil disk 100 on the cooking utensil 200 will not be affected by the migration of the cooking utensil 200, thereby simulating the effect of open flame cooking.

[0099] The coil disk 100 further includes a heat insulating component 110 and a magnetic member 130. The magnetic member 130 is disposed opposite to the coil 120 and is located on the side of the coil 120 away from the cooking utensil 200. By disposing the magnetic member 130, the distribution of the electromagnetic field on the side of the coil 120 away from the cooking utensil 200 can be changed, so that the electromagnetic field generated by the coil 120 can be concentrated on the side where the cooking utensil 200 is located, so as to centrally heat the cooking utensil 200, thereby achieving the technical effect of improving the electromagnetic heating efficiency and electromagnetic heating energy efficiency.

[0100] The heat insulating component 110 is disposed between the coil 120 and the magnetic component 130, the first side of the heat insulating component 110 faces the cooking utensil 200, the coil 120 is disposed on the first side of the heat insulating component 110, the second side of the heat insulating component 110 faces away from the cooking utensil 200, and the magnetic component 130 is disposed on the second side of the heat insulating component 110. The heat insulating component 110 has excellent heat insulating performance, and can reduce the heat diffused from the high-temperature cooking utensil 200 and the high-temperature coil 120 to the magnetic component 130, so that the magnetic component 130 is kept at a relatively low temperature during operation, and the magnetic component 130 is prevented from losing magnetism due to high temperature, thereby ensuring the working reliability of the coil disk 100.

[0101] Optionally, a clearing area 122 is formed in the middle of the coil 120, and no winding is arranged in the clearing area 122. The clearing area 122 can be used to install a temperature sensor 150, and the temperature sensor 150 is used to detect the temperature of the cooking utensil 200 above the coil 120, so as to control the power of the coil 120 according to the detected temperature value. Since no winding is arranged in the clearing area 122, the coil 120 has less interference with the temperature sensor 150 during the process of heating the cooking utensil 200, and the temperature measurement error can be reduced, but the clearing area 122 correspondingly loses the ability to heat the cooking utensil 200, forming a heating cold zone, resulting in that the heating effect of the area on the cooking utensil 200 opposite to the clearing area 122 is weaker than that of other areas, resulting in a technical defect of uneven heating.

[0102] On this basis, a protrusion 132 is provided on the magnetic member 130, and the protrusion 132 is provided on the side of the magnetic member 130 facing the heat insulation component 110. After the coil 120 is energized, on the basis that the magnetic member 130 can concentrate the electromagnetic field to the side where the coil 120 is located, the protrusion 132 protruding toward the direction of the coil 120 can concentrate the electromagnetic field to the air avoidance area 122 at the center of the coil 120, so as to improve the magnetic field strength of the air avoidance area 122 without changing the power of the coil 120, reduce the heating difference between the air avoidance area 122 and other surrounding areas, and avoid forming an obvious cold area on the cooking utensil 200, thereby alleviating the technical defects existing in the related technology, and then achieving the technical effect of optimizing the structure of the coil disk 100 and improving the heating uniformity and heating reliability of the coil disk 100.

[0103] Optionally, the raw material of the winding wound into the coil 120 is a high-temperature resistant metal material, and the linear expansion coefficient of the high-temperature resistant metal material is low to avoid high-temperature damage or high-temperature deformation of the coil 120. Specifically, the coil 120 can be prepared from copper alloy or iron alloy.

[0104] Optionally, the material of the heat insulating component 110 may be a mixture of white carbon black and moissanite, or may be flexible vacuum silicon heat insulating cotton.

[0105] like Figure 5, Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, in some embodiments of the present invention, optionally, the protrusion 132 is annular; the protrusion 132 and the coil 120 share a common axis.

[0106] In this embodiment, the protrusion 132 on the magnetic member 130 is annular, and the protrusion 132 may be an uninterrupted annular structure or an intermittent annular structure with multiple intervals. By setting the protrusion 132 to be annular, the magnetic field can be gathered in multiple directions or even in all directions, so that the magnetic field can be concentrated to the air-avoiding area 122 at the center of the coil 120, thereby improving the heating capacity of the air-avoiding area 122.

[0107] The annular protrusion 132 shares an axis with the spirally wound coil 120. The axis is located in the air avoidance area 122. By arranging the coaxially arranged coil 120 and the protrusion 132, the annular protrusion 132 can enhance the gathering effect of the magnetic field generated by the coil 120, so that the magnetic field generated by the spiral coil 120 can be gathered toward the air avoidance area 122 where the axis is located, thereby preventing the gathered magnetic field from deviating from the air avoidance area 122, thereby compensating for the heating loss of the air avoidance area 122.

[0108] like Figure 6 , Figure 7 and Fig.10 As shown, in some embodiments of the present invention, optionally, there are multiple protrusions 132 , and the multiple protrusions 132 are distributed at intervals in the radial direction of the coil 120 .

[0109] In this embodiment, on the basis of the protrusion 132 being annular, a plurality of protrusions 132 are provided on the side of the magnetic member 130 facing the coil 120. The sizes of the plurality of protrusions 132 are different, and the plurality of protrusions 132 are spaced apart in the radial direction of the coil 120, that is, the plurality of protrusions 132 are nested.

[0110] By providing a plurality of nested protrusions 132 on the magnetic member 130 , multiple barriers can be formed in the radial direction of the coil 120 to enhance the effect of the magnetic field converging toward the center of the coil 120 , thereby enhancing the electromagnetic heating capacity of the air avoidance area 122 and avoiding the occurrence of obvious heating cold zones on the cooking utensil 200 .

[0111] Optionally, the number of protrusions 132 can be adjusted according to parameters such as the size of the coil 120, the size of the cooking utensil 200 that is frequently heated, and the rated heating power. This embodiment does not impose a rigid limitation on this, and it is sufficient to meet the heating uniformity requirements of the cooking utensil 200.

[0112] like Figure 6 , Figure 7 and Fig.10 As shown, in some embodiments of the present invention, optionally, among the multiple protrusions 132, at least one protrusion 132 is opposite to the air avoidance area 122; and / or among the multiple protrusions 132, at least one protrusion 132 is located on the peripheral side of the air avoidance area 122.

[0113] In this embodiment, among the multiple annular protrusions 132, at least one protrusion 132 is opposite to the air avoidance area 122, that is, it is located on the inner side of the air avoidance area 122. When the coil 120 is energized, the electromagnetic field will be concentrated along the protrusion 132 toward the air avoidance area 122 opposite to it, so as to increase the magnetic field strength of the air avoidance area 122 and enhance the heating effect of the air avoidance area 122.

[0114] Correspondingly, among the multiple annular protrusions 132, at least one protrusion 132 is opposite to the area where the windings are located around the air avoidance area 122, that is, it is located on the side of the air avoidance area 122. When the coil 120 is energized, the protrusion 132 located on the side of the air avoidance area 122 will suppress the tendency of the electromagnetic field to diffuse around, thereby increasing the magnetic field strength of the air avoidance area 122 and enhancing the heating effect of the air avoidance area 122.

[0115] Optionally, an annular protrusion 132 may be provided on both the inner side and the peripheral side of the air avoidance area 122 to reduce the heating difference between the air avoidance area 122 and the area where the surrounding windings are located.

[0116] like Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments of the utility model, optionally, the magnetic member 130 includes: a magnetic strip 134, which is provided on the thermal insulation component 110, and the magnetic strip 134 extends in the radial direction of the coil 120. The number of the magnetic strips 134 is multiple, and the multiple magnetic strips 134 are spaced apart in the circumferential direction of the coil 120; a first rib 1322, which is provided on the side of the magnetic strip 134 facing the thermal insulation component 110, and each magnetic strip 134 includes at least one first rib 1322, and the first ribs 1322 on the multiple magnetic strips 134 are combined into an annular protrusion 132.

[0117] In this embodiment, the magnetic member 130 includes a plurality of magnetic strips 134, which extend in the radial direction of the coil 120, and the plurality of magnetic strips 134 are spaced apart along the circumferential direction of the coil 120. Specifically, the plurality of magnetic strips 134 can be evenly distributed below the coil 120, that is, the angles between two adjacent magnetic strips 134 among the plurality of magnetic strips 134 are the same.

[0118] On this basis, at least one first rib 1322 is provided on each of the multiple magnetic strips 134, and there is an angle between the extension direction of the first rib 1322 on the magnetic strip 134 and the radial direction of the coil 120. For example, a strip-shaped first rib 1322 perpendicular to the radial direction of the coil 120 can be provided, or an arc-shaped first rib 1322 extending on a circle with the axis of the coil 120 as the axis can be provided.

[0119] The first ribs 1322 on the plurality of magnetic strips 134 are combined to form an annular and discontinuous protrusion 132 . The first ribs 1322 are not included between two adjacent magnetic strips 134 , and there is a gap on the corresponding protrusion 132 .

[0120] When there are multiple annular protrusions 132 in the radial direction of the coil 120, multiple first ribs 1322 are correspondingly arranged on at least some of the multiple magnetic strips 134, and the multiple first ribs 1322 are arranged at intervals in the length direction of the magnetic strips 134 to combine multiple inner and outer nested protrusions 132.

[0121] This structure can reasonably utilize the magnetic strip 134 structure under the coil 120, specifically by providing ribs on the magnetic strip 134 to form an annular protrusion 132, so as to reduce the difficulty and cost of improving the coil disk 100 while meeting the magnetic field gathering requirements and improving the heating capacity of the air avoidance area 122.

[0122] like Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the magnetic member 130 includes a plurality of arrays 1342, each array 1342 includes a plurality of magnetic strips 134; the plurality of magnetic strips 134 belonging to the same array 1342 are distributed in a sector-shaped area.

[0123] In this embodiment, the magnetic member 130 includes a plurality of arrays 1342 , each array 1342 includes a plurality of magnetic strips 134 , wherein each array 1342 corresponds to a sector below the coil 120 , and the plurality of arrays 1342 are assembled below the coil 120 to form an annular protrusion 132 below the coil 120 .

[0124] Optionally, the gathering effect of the magnetic field can be adjusted by adjusting the number of arrays 1342 and the number of magnetic strips 134 included in each array 1342. For example, when higher heating uniformity requirements are required, the number of arrays 1342 and the number of magnetic strips 134 in the array 1342 can be increased, and vice versa.

[0125] like Figure 5 and Figure 6As shown, in some embodiments of the present invention, optionally, the array 1342 includes: a first magnetic strip 1344, wherein the inner and outer ends of the first magnetic strip 1344 are both provided with a first rib 1322 in the radial direction of the coil 120; and a second magnetic strip 1346, wherein the length of the second magnetic strip 1346 is less than the length of the first magnetic strip 1344, wherein the outer end of the second magnetic strip 1346 is provided with a first rib 1322 in the radial direction of the coil 120.

[0126] In this embodiment, the magnetic member 130 includes two inner and outer protrusions 132 , wherein the outer protrusion 132 is located around the air-avoiding area 122 , and the inner protrusion 132 is opposite to the air-avoiding area 122 .

[0127] On this basis, the array 1342 includes a first magnetic stripe 1344 and a second magnetic stripe 1346. The first magnetic stripe 1344 and the second magnetic stripe 1346 are distinguished by their length and the number of first convex ribs 1322 thereon. The first magnetic stripe 1344 is longer, and first convex ribs 1322 are provided at both ends of the first magnetic stripe 1344. When viewed from the side, the first magnetic stripe 1344 is U-shaped. The second magnetic stripe 1346 is shorter than the first magnetic stripe 1344, and the second magnetic stripe 1346 is provided with first convex ribs 1322 only at the outer end. When viewed from the side, the second magnetic stripe 1346 is L-shaped.

[0128] After the assembly of multiple arrays 1342 is completed, the first rib 1322 at the outer end of the first magnetic strip 1344 cooperates with the first rib 1322 at the outer end of the second magnetic strip 1346 to form a protrusion 132 located on the periphery of the air avoidance area 122, and the first rib 1322 at the inner end of the first magnetic strip 1344 is combined to form a protrusion 132 opposite to the air avoidance area 122.

[0129] It can be seen that by setting a shorter second magnetic strip 1346 in conjunction with the first magnetic strip 1344, the small-sized area in the center can be reasonably avoided, and the protrusion 132 with a smaller circumferential size can be combined only by a few first convex ribs 1322 at the inner ends of the first magnetic strips 1344, so as to avoid the accumulation of multiple magnetic strips 134 in the central area and interference. At the same time, the first convex rib 1322 at the outer end of the first magnetic strip 1344 and the first convex rib 1322 at the outer end of the second magnetic strip 1346 can be combined to ensure the density of the protrusion 132 on the side of the avoidance area 122, and avoid the protrusion 132 with a larger circumferential size on the outer side being too sparse. This can achieve the technical effect of improving the electromagnetic field gathering effect and gathering uniformity, and improving the heating uniformity and reliability of the coil disk 100.

[0130] like Fig. 9 and Fig.10As shown, in some embodiments of the utility model, optionally, the magnetic member 130 includes: a magnetic sheet 136, the magnetic sheet 136 is fan-shaped, the number of the magnetic sheets 136 is multiple, and the multiple magnetic sheets 136 are distributed in the circumferential direction of the coil 120; a second rib 1324, which is arranged on the side of the magnetic sheet 136 facing the thermal insulation component 110, each magnetic sheet 136 includes at least one second rib 1324, and the second ribs 1324 on the multiple magnetic sheets 136 are combined into an annular protrusion 132.

[0131] In this embodiment, the magnetic member 130 includes a plurality of magnetic sheets 136 . The magnetic sheets 136 are fan-shaped. Each magnetic sheet 136 corresponds to a sector below the coil 120 . The plurality of magnetic sheets 136 are assembled to form a ring-shaped magnetic member 130 below the coil 120 .

[0132] On this basis, the inner and outer ends of the magnetic sheet 136 are both provided with second ribs 1324. The second ribs 1324 at the outer ends of multiple magnetic sheets 136 are combined to form a protrusion 132 on the side of the air avoidance area 122, and the second ribs 1324 at the inner ends of multiple magnetic sheets 136 are combined to form a protrusion 132 opposite to the air avoidance area 122, thereby forming an inner and outer magnetic field gathering structure.

[0133] Compared with the magnetic strip 134 solution, the magnetic sheet 136 has a higher coverage rate under the coil 120, and even a plurality of closely fitting magnetic sheets 136 can cover the entire area under the coil 120, so as to reduce the magnetic field strength under the magnetic sheet 136 and improve the effect of the magnetic member 130 in gathering the magnetic field upward. At the same time, compared with the magnetic strip 134 solution, the gap on the protrusion 132 formed by the plurality of magnetic sheets 136 is smaller, and even the gap can be eliminated by closely fitting, thereby improving the effect of the protrusion 132 in gathering the magnetic field toward the center of the coil 120 and improving the heating capacity of the air-avoiding area 122.

[0134] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the coil disk 100 also includes: a supporting component 140, a first side of the supporting component 140 includes a receiving groove 1402, the heat insulation component 110 and the coil 120 are arranged in the receiving groove 1402, and the magnetic component 130 is arranged on the second side of the supporting component 140.

[0135] In this embodiment, the coil disk 100 further includes a support component 140, which is connected to the heat insulating component 110 and can provide support and protection for the heat insulating component 110 and the coil 120. After power is turned on, the heat radiation generated by the coil 120 is blocked by the heat insulating component 110 to reduce the working temperature of the support component 140 and prevent the support component 140 from melting at high temperature.

[0136] The support component 140 is formed with a receiving groove 1402, the receiving groove 1402 faces the cooking utensil 200, and the heat insulating component 110 and the coil 120 are arranged in the receiving groove 1402. The magnetic component 130 is fixed to the support component 140. During the assembly process, the magnetic component 130 is first assembled to the support component 140, and then the heat insulating component 110 and the coil 120 are installed in the receiving groove 1402, and the heat insulating component 110 and the support component 140 are fixedly connected.

[0137] like Figure 2 and Figure 4 As shown, in some embodiments of the present invention, optionally, the second side of the support component 140 includes a mounting groove 1404, and the magnetic member 130 is disposed in the mounting groove 1404; the support component 140 also includes a through hole 1406, and the protrusion 132 partially passes through the through hole 1406.

[0138] In this embodiment, the support component 140 is formed of a non-magnetic material to prevent the support component 140 from interfering with the coil 120 and the magnetic component 130. On this basis, a mounting groove 1404 is provided on the side of the support component 140 that is away from the heat insulation component 110, that is, the mounting groove 1404 and the receiving groove 1402 are opposite to each other, and the shape of the mounting groove 1404 is adapted to the outer contour of the magnetic component 130, so that the magnetic component 130 can be embedded in the mounting groove 1404.

[0139] By embedding the magnetic component 130 on the side of the support component 140 away from the heat insulation component 110, the support assembly can form a second barrier on the basis of the heat insulation component 110, further reducing the heat diffused to the magnetic component 130. At the same time, the installation groove 1404 provided on the back of the support component 140 can provide convenient conditions for disassembling and assembling the magnetic component 130 on the one hand, and can improve the heat dissipation effect of the magnetic component 130 by exposing the magnetic component 130 on the other hand.

[0140] On this basis, a through hole 1406 is further provided on the support component 140, and the through hole 1406 is connected to the mounting groove 1404, and the through hole 1406 runs through the support component 140. During the assembly process, the magnetic strip 134 or the magnetic sheet 136 is embedded in the mounting groove 1404, and the first convex rib 1322 or the second convex rib 1324 is inserted into the through hole 1406. The through hole 1406 for accommodating the protrusion 132 can, on the one hand, improve the structural compactness of the coil disk 100, reduce the thickness of the coil disk 100, and provide convenient conditions for the miniaturization design of the coil disk 100. On the other hand, the protrusion 132 running through the support component 140 can enhance the effect of the magnetic field being gathered toward the air avoidance area 122, and reduce the influence of structural obstruction on the magnetic field gathering.

[0141] like Figure 2 and Fig.11As shown, in some embodiments of the present invention, optionally, the second side of the heat insulating component 110 includes an avoidance groove 1102 , and a portion of the protrusion 132 is located in the avoidance groove 1102 .

[0142] In this embodiment, a side of the heat insulating component 110 facing the support component 140 is provided with an escape groove 1102, and the escape groove 1102 is opposite to the through hole 1406 on the support component 140. After assembly, the protrusion 132 passing through the through hole 1406 is inserted into the escape groove 1102. The escape groove 1102 for inserting the protrusion 132 can cooperate with the through hole 1406 to further improve the structural compactness of the coil disk 100, reduce the thickness of the coil disk 100, and provide convenient conditions for the miniaturization design of the coil disk 100. On the other hand, the distance between the protrusion 132 and the coil 120 can be shortened to enhance the effect of the magnetic field converging to the avoidance area 122, and reduce the influence of structural obstruction on the magnetic field converging.

[0143] like Fig.11 As shown, in some embodiments of the present invention, optionally, in the axial direction of the coil 120, the distance between the coil 120 and the magnetic strip 134 is a first distance H; the range of the first distance H is: greater than or equal to 4 mm, and less than or equal to 9 mm.

[0144] In this embodiment, in the axial direction of the coil 120 , the distance between the coil 120 and the magnetic strip 134 is a first distance H. The first distance H can be reduced by providing the aforementioned through hole 1406 and the avoidance groove 1102 .

[0145] Optionally, the first distance H needs to be greater than or equal to 4 mm and less than or equal to 9 mm. Specifically, the first distance H can be controlled between 5 mm and 7 mm.

[0146] like Figure 6 and Fig.12 As shown, while ensuring the thickness and rigidity of the thermal insulation component 110, reducing the first distance H can reduce the number of magnetic strips 134. Taking this embodiment as an example, when the thickness of the thermal insulation component 110 is selected to be 7 mm, the total number of magnetic strips 134 is 23. If the thickness of the thermal insulation component 110 is reduced to 5 mm, the number of magnetic strips 134 can be reduced to 17.

[0147] It can be seen that reducing the first distance H is beneficial to reducing the cost and structural complexity of the coil disk 100 .

[0148] Optionally, the material of the heat insulating component 110 can be a mixture of white carbon black, or other materials with good heat insulating properties, which need to meet the requirement of being inserted into the high temperature winding. To ensure that the 3.5 mm winding pin can be inserted, the thickness of the heat insulating component 110 prepared only by white carbon black needs to be controlled to at least 12 mm. Now, the heat insulating component 110 prepared by selecting a mixture of white carbon black or other materials with stronger heat insulating properties can be controlled to have a thickness of 4-9 mm to meet the requirement of the first distance H mentioned above.

[0149] like Figure 2 As shown, in some embodiments of the present invention, optionally, the heat insulating component 110 includes a boss 1104 , the boss 1104 is located in the air avoidance area 122 , and the coil disk 100 further includes: a temperature sensor 150 , which is disposed on the boss 1104 .

[0150] In this embodiment, a boss 1104 is provided on the side of the heat insulation component 110 facing away from the magnetic component 130 . The position of the boss 1104 overlaps with the position of the air-avoiding area 122 . After assembly, the coil 120 surrounds the air-avoiding area 122 .

[0151] On this basis, the temperature sensor 150 is set on the boss 1104. The temperature sensor 150 can detect the temperature value of the cooking utensil 200 above the coil disk 100. The controller can then adjust the power of the coil 120 according to the temperature value to ensure that the current heating power matches the heating requirements.

[0152] By providing the boss 1104, the temperature sensor 150 can be raised so that the temperature sensor 150 and the coil 120 are offset, thereby reducing the interference of the coil 120 on the temperature sensor 150 and making the temperature value detected by the temperature sensor 150 closer to the actual temperature of the cooking utensil 200, thereby achieving the technical effect of improving the detection accuracy of the temperature sensor 150 and improving the heating reliability of the coil disk 100.

[0153] An embodiment of the present invention provides a cooking device, which includes: a body; and a coil disk 100 such as any one of the above embodiments, which is arranged on the body.

[0154] In this embodiment, a cooking device provided with the coil disk 100 in any of the above embodiments is proposed, so the cooking device has the advantages of the coil disk 100 in any of the above embodiments and can achieve the technical effects that can be achieved by the coil disk 100 in any of the above embodiments. To avoid repetition, it will not be described here.

[0155] On this basis, the cooking device also includes a main body, which is the main frame structure of the cooking device. The main body is used to position, support and protect other working structures on the cooking device. The coil disk 100 can be set inside the main body, and the coil disk 100 can also be embedded on the top of the main body to heat the cooking utensils 200 placed on the cooking device through the coil disk 100.

[0156] It should be clarified that in the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process easier, 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, so these descriptions cannot be understood as limitations on the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0157] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0158] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coil disk, characterized in that: include: Thermal insulation components; A coil is disposed on the first side of the heat-insulating component, the coil can generate heat radiation and an electromagnetic field when energized, and the center of the coil includes an air-avoiding area; The magnetic component is arranged on the second side of the heat insulation component away from the coil, and a protrusion is arranged on the side of the magnetic component facing the heat insulation component.

2. The coil disk according to claim 1, characterized in that The protrusion is annular; The protrusion and the coil share a common axis.

3. The coil disk according to claim 2, characterized in that There are multiple protrusions, and the multiple protrusions are distributed at intervals in the radial direction of the coil.

4. The coil disk according to claim 3, characterized in that Among the plurality of protrusions, at least one protrusion is opposite to the air-avoiding area; and / or Among the plurality of protrusions, at least one protrusion is located on the peripheral side of the clearance area.

5. The coil disk according to claim 2, characterized in that The magnetic member comprises: A magnetic strip, provided on the heat insulation component, the magnetic strip extends in the radial direction of the coil, the number of the magnetic strips is multiple, and the multiple magnetic strips are spaced apart and distributed in the circumferential direction of the coil; The first convex rib is arranged on the side of the magnetic strip facing the thermal insulation component. Each of the magnetic strips includes at least one first convex rib. The first convex ribs on a plurality of the magnetic strips are combined into the annular protrusion.

6. The coil disk according to claim 5, characterized in that The magnetic member includes a plurality of arrays, each of the arrays includes a plurality of the magnetic strips; The plurality of magnetic stripes belonging to the same array are distributed in a sector-shaped area.

7. The coil disk according to claim 6, characterized in that The array comprises: A first magnetic strip, wherein the first convex rib is disposed at both the inner end and the outer end of the first magnetic strip in the radial direction of the coil; The second magnetic stripe has a length smaller than that of the first magnetic stripe, and the first rib is disposed at an outer end of the second magnetic stripe in a radial direction of the coil.

8. The coil disk according to claim 2, characterized in that The magnetic member comprises: A magnetic sheet, wherein the magnetic sheet is fan-shaped, the number of the magnetic sheets is multiple, and the multiple magnetic sheets are distributed in the circumferential direction of the coil; The second convex rib is arranged on the side of the magnetic sheet facing the thermal insulation component. Each magnetic sheet includes at least one second convex rib. The second convex ribs on a plurality of magnetic sheets are combined into the annular protrusion.

9. The coil disk according to any one of claims 1 to 8, characterized in that Also includes: A support component, wherein a first side of the support component comprises a receiving groove, the heat insulation component and the coil are arranged in the receiving groove, and the magnetic component is arranged on a second side of the support component.

10. The coil disk according to claim 9, characterized in that The second side of the support component includes a mounting groove, and the magnetic member is arranged in the mounting groove; The support member further includes a through hole through which the protrusion partially passes.

11. The coil disk according to claim 10, characterized in that The second side of the heat insulation component comprises an avoidance groove, and the protrusion is partially located in the avoidance groove.

12. The coil disk according to claim 5, characterized in that In the axial direction of the coil, the distance between the coil and the magnetic strip is a first distance; The range of the first distance is: greater than or equal to 4 mm and less than or equal to 9 mm.

13. The coil disk according to any one of claims 1 to 8, characterized in that The heat insulation component includes a boss, and the boss is located in the air-avoiding area. The coil disk also includes: The temperature sensor is arranged on the boss.

14. A cooking device, characterized in that: include: ontology; The coil disk according to any one of claims 1 to 13, arranged on the main body.

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