Coil panel assembly and electromagnetic heating device

Abstract

The utility model discloses a coil panel assembly and an electromagnetic heating device, and relates to the technical field of electromagnetic heating, the coil panel assembly comprises a support and a plurality of winding units, in a pair of winding units, the directions of currents of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle parts of the two winding units, and the winding units are arranged on the support. In at least one winding unit, the winding center of the winding unit is located on the side, close to the second winding ring section, of the geometric center of the winding unit, and the central angle of the center of the support corresponding to the winding unit is alpha, 0 degree lt. [alpha] [lt]; and 90 degrees. The winding units protrude towards the center of the support, the magnetic field intensity of the middle area of the coil panel can be increased, and the heating effect of the small pot is improved. The magnetic pole formed in the middle of the winding unit is closer to one side of the edge of the support and can be coupled with the position of the corresponding pot wall, so that the problem that an existing induction cooker is poor in heating effect on the pot wall is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic heating, and particularly relates to a coil disc assembly and an electromagnetic heating device. Background Art

[0002] The conventional induction cooker coil disc has a single-ring spiral winding structure. Its heating effect on cookware is limited by its own physical electromagnetic field, and the heat is concentrated inward. When the cookware to be heated is a wok, due to the too large sidewall disc spacing, the heat cannot be concentrated on the pot wall, and the heating effect of the pot wall is very poor. Even if the diameter of the coil disc is increased, it is difficult to increase the heat on the pot wall. Moreover, when the cookware to be heated is a small pot, due to the weak magnetic field in the center of the coil disc, the heating effect of the small pot is poor. Summary of the Utility Model

[0003] The main object of the utility model is to provide a coil disc assembly and an electromagnetic heating device, aiming to solve the problem of poor heating effect of the existing induction cooker on small pots and other cookware.

[0004] To achieve the above object, the coil disc assembly proposed by the utility model includes:

[0005] A bracket; and,

[0006] A plurality of winding units arranged on the bracket. The plurality of winding units are circumferentially distributed along the bracket. Each winding unit is annularly arranged and has a first winding ring section close to the center of the bracket and a second winding ring section close to the edge of the bracket;

[0007] In a pair of winding units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units. And in at least one winding unit, the width of the first winding ring section is d1, the width of the second winding ring section is d2, and d1 is greater than d2;

[0008] Wherein, the central angle of the bracket corresponding to the winding unit is α, and 0° < α < 90°.

[0009] The utility model also provides a coil disc assembly, including:

[0010] A bracket; and,

[0011] A plurality of winding units arranged on the bracket. The plurality of winding units are circumferentially distributed along the bracket. Each winding unit is annularly arranged and has a first winding ring section close to the center of the bracket and a second winding ring section close to the edge of the bracket;

[0012] In the pair of winding units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle parts of the two winding units, and in at least one of the winding units, the winding center of the winding unit is located on the side close to the second winding ring section of its geometric center;

[0013] Wherein, the central angle of the center of the bracket corresponding to the winding unit is α, and 0° < α < 90°.

[0014] In one embodiment, α ≥ 30°.

[0015] In one embodiment, 40° ≤ α ≤ 50°.

[0016] In one embodiment, the multiple winding units define a first inner peripheral region, and the diameter of the circumscribed circle of the first inner peripheral region is d, and d ≤ 40 mm.

[0017] In one embodiment, the multiple winding units have a first side and a second side, and the first side is used to correspond to the appliance to be heated;

[0018] The coil disk assembly further includes a plurality of magnet structures arranged on the second side of the multiple winding units. The plurality of magnet structures define a second inner peripheral region, and the maximum side length of the second inner peripheral region is D, and D ≤ 80 mm.

[0019] In one embodiment, the multiple winding units have a first side and a second side, and the first side is used to correspond to the appliance to be heated;

[0020] The coil disk assembly further includes a plurality of magnet structures arranged on the second side of the multiple winding units. The magnet structure includes at least one magnet part, one end of the magnet part corresponds to one winding unit, and the other end corresponds to another winding unit.

[0021] In one embodiment, the magnet structure includes a plurality of the magnet parts.

[0022] In one embodiment, at least one of the magnet parts is set as a first magnet part, and the first magnet part includes:

[0023] Two magnetic end parts, arranged corresponding to the central regions of two adjacent winding units; and,

[0024] An intermediate part, extending from one magnetic end part to the other magnetic end part.

[0025] In one embodiment, the two magnetic end parts and the intermediate part are integrally provided.

[0026] In one embodiment, the magnet part further includes a second magnet part, and both ends of the second magnet part are arranged corresponding to the first winding ring segments of two adjacent winding units.

[0027] In one embodiment, the multiple winding units are arranged in series or in parallel.

[0028] The present utility model also provides an electromagnetic heating device, including a coil disc assembly, and the coil disc assembly includes:

[0029] A bracket; and,

[0030] Multiple winding units, arranged on the bracket, the multiple winding units are circumferentially distributed along the bracket, each winding unit is annularly arranged, and it has a first winding ring segment close to the center of the bracket and a second winding ring segment close to the edge of the bracket;

[0031] In a pair of winding units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units, and in at least one winding unit, the width of the first winding ring segment is d1, the width of the second winding ring segment is d2, and d1 is greater than d2;

[0032] Wherein, the central angle of the bracket corresponding to the winding unit is α, and 0° < α < 90°.

[0033] The present utility model also provides another electromagnetic heating device, including a coil disc assembly, and the coil disc assembly includes:

[0034] A bracket; and,

[0035] Multiple winding units, arranged on the bracket, the multiple winding units are circumferentially distributed along the bracket, each winding unit is annularly arranged, and it has a first winding ring segment close to the center of the bracket and a second winding ring segment close to the edge of the bracket;

[0036] In a pair of winding units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units, and in at least one winding unit, the winding center of the winding unit is located on one side close to the second winding ring segment of its geometric center;

[0037] Wherein, the central angle of the bracket corresponding to the winding unit is α, and 0° < α < 90°.

[0038] In the technical solution of the present utility model, in at least one winding unit, the magnetic pole formed in the middle thereof is close to one side of the corresponding second winding ring segment, so that the magnetic pole formed in the middle of the winding unit can be closer to the edge side of the bracket, and can perform a coupling action with the position of the corresponding pot wall, increasing the heating range of the pot wall, improving the uniformity of heating of the bottom and the pot wall of a pot such as a wok, so as to solve the problem that the existing induction cooker has a poor heating effect on the pot wall, and it is difficult to increase the heat of the pot wall even if the diameter of the coil disk is increased. And the central angle of the center of the bracket corresponding to the winding unit is an acute angle, so that the winding unit protrudes more towards the center of the bracket, increasing the magnetic field intensity in the middle region of the coil disk, thereby improving the heating effect of a small pot. Brief Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0040] Figure 1 It is a top view structural schematic diagram of an embodiment of the coil disk assembly provided by the present utility model;

[0041] Figure 2 is Figure 1 a schematic diagram of the current direction after the multiple winding units in are energized;

[0042] Figure 3 is Figure 1 a structural schematic diagram of the magnet structure in;

[0043] Figure 4 is Figure 3 a three-dimensional structural schematic diagram of the magnet structure in;

[0044] Figure 5 is Figure 4 a structural schematic diagram of the coil disk assembly and the pot in;

[0045] Figure 6 is Figure 1 a schematic diagram of the coil disk assembly heating the side wall of the pot in.

[0046] Explanation of the reference numerals in the drawings:

[0047] 100, coil disk assembly; 1, bracket; 2, winding unit; 21, first winding ring segment; 22, second winding ring segment; 23, first inner peripheral region; 3, magnet structure; 31, second inner peripheral region; 32, first magnet part; 321, magnetic end part; 322, middle section; 33, second magnet part;

[0048] 200, small pot; 201, cookware.

[0049] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0050] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0051] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0052] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0053] The conventional induction cooker coil disk has a single-ring spiral winding structure, and its heating effect on cookware is limited by its own physical electromagnetic field, and the heat is concentrated inward. When the cookware to be heated is a wok, due to the too large distance between the side wall disks, the heat cannot be concentrated on the pot wall, and the heating effect of the pot wall is very poor. Even if the diameter of the coil disk is increased, it is difficult to increase the heat on the pot wall. Moreover, when the cookware to be heated is a small pot, due to the weak magnetic field in the center of the coil disk, the heating effect of the small pot is poor.

[0054] In view of this, the present utility model proposes a coil disk assembly to solve the problem of poor heating effect of the existing induction cooker on small pot cookware.

[0055] Please refer toFigure 1 , in an embodiment of the present utility model, the coil disk assembly 100 includes a bracket 1 and a plurality of winding units 2. The plurality of winding units 2 are arranged on the bracket 1, and the plurality of winding units 2 are circumferentially distributed along the bracket 1. Each winding unit 2 is annularly arranged and has a first winding ring segment 21 close to the center of the bracket 1 and a second winding ring segment 22 close to the edge of the bracket 1; refer to Figure 2 , in a pair of winding units 2, the current directions of the two winding units 2 are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units 2. And in at least one winding unit 2, the width of the first winding ring segment 21 is d1, and the width of the second winding ring segment 22 is d2, and d1 is greater than d2; wherein, the central angle of the bracket 1 corresponding to the winding unit 2 is α, and 0° < α < 90°.

[0056] In the technical solution of the present utility model, the central angle of the bracket corresponding to the winding unit is an acute angle, so that the winding unit protrudes more towards the center of the bracket, which can increase the magnetic field strength in the middle area of the coil disk to improve the heating effect of the small pot. The width of the first winding ring segment is d1, and the width of the second winding ring segment is d2, and d1 is greater than d2, so that the magnetic poles formed in the middle of the winding unit can be closer to the edge side of the bracket, and can perform a coupling effect with the corresponding position of the pot wall, increasing the heating range of the pot wall, and improving the uniformity of heating the bottom and the pot wall of the pot such as a frying pan, so as to solve the problem that the existing induction cooker has a poor heating effect on the pot wall, and it is difficult to increase the heat of the pot wall even if the diameter of the coil is increased.

[0057] In another coil disk assembly 100 provided by the present utility model, the coil disk assembly 100 includes a bracket 1 and a plurality of winding units 2. The plurality of winding units 2 are arranged on the bracket 1, and the plurality of winding units 2 are circumferentially distributed along the bracket 1. Each winding unit 2 is annularly arranged and has a first winding ring segment 21 close to the center of the bracket 1 and a second winding ring segment 22 close to the edge of the bracket 1; in a pair of winding units 2, the current directions of the two winding units 2 are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units 2. And in at least one winding unit 2, the winding center of the winding unit 2 is located on the side close to the second winding ring segment 22 of its geometric center; wherein, the central angle of the bracket 1 corresponding to the winding unit 2 is α, and 0° < α < 90°.

[0058] In the technical solution of the present utility model, the central angle of the center of the bracket corresponding to the winding unit is an acute angle, so that the winding unit protrudes more towards the center of the bracket, which can increase the magnetic field strength in the middle area of the coil disk to improve the heating effect of the small pot. The winding center of the winding unit is located on the side close to the second winding ring section of its geometric center, so that the magnetic poles formed in the middle of the winding unit can be closer to the edge side of the bracket, and can perform a coupling effect with the position of the corresponding pot wall. Refer to Figure 6 , the heating range of the pot wall is increased, so that the heating uniformity of the bottom and the pot wall of the pot 201 such as a frying pan is improved, so as to solve the problem that the existing induction cooker has a poor heating effect on the pot wall, and it is difficult to increase the heat of the pot wall even if the diameter of the coil is increased.

[0059] It should be noted that the shapes of the winding units 2 in the "multiple winding units 2" described in this application can be set to be the same or different. Each winding unit 2 is formed by winding multiple turns of coils. Each turn of coil in each winding unit 2 can be regarded as an annular structure. Of course, the annular structure is not only circular, it can be square or elliptical. Each winding unit 2 can be laid flat along a surface area, and the surface area can be a plane or a curved surface. Each winding unit 2 can also be bent, which can be determined according to the actual situation, and the embodiments of this specification do not limit this.

[0060] "The multiple winding units 2 are distributed along the circumference of the bracket 1" can be that the multiple winding units 2 are distributed in a ring shape on the same side of the bracket 1, or part of the winding units 2 are arranged on one side of the bracket 1, and the other part of the winding units 2 are arranged on the other side of the bracket 1. However, as long as they are distributed in a ring shape on the projection plane of the bracket 1, they can be regarded as "the multiple winding units 2 are distributed along the circumference of the bracket 1".

[0061] "The direction of the current" refers to the direction of the current of the winding unit 2 along the clockwise or counterclockwise direction. "The directions of the currents of the two winding units 2 are set to be opposite", that is, when the direction of the current of one winding unit 2 is clockwise, the direction of the current of the other winding unit 2 is counterclockwise.

[0062] It should be noted that according to Ampere's rule: Hold the current-carrying solenoid with the right hand, and let the four fingers point in the direction of the current. Then, the end pointed by the thumb is the N pole of the current-carrying solenoid. When the current directions of the two winding units 2 are set to be opposite, a closed magnetic field is formed between the two winding units 2. For example, one of the two winding units 2 is set as the first winding unit, and the other is set as the second winding unit. When the first winding unit and the second winding unit are arranged horizontally, the N pole of the magnetic pole is formed on the upper side of the first winding unit, and the S pole is formed on the lower side. At the same time, the S pole of the magnetic pole is formed on the upper side of the second winding unit, and the N pole is formed on the lower side. In this way, the magnetic field lines go from the N pole of the first winding unit to the S pole of the second winding unit, then from the S pole of the second winding unit to the N pole, then from the N pole of the second winding unit to the S pole of the first winding unit, and finally from the S pole of the first winding unit back to the N pole of the first winding unit, thus forming a closed magnetic field.

[0063] Then, when a pair of the winding units 2 is energized, the closed magnetic field formed between the two special-shaped magnetic poles formed by the two winding units 2 can interact with the pot wall that is far away from the winding unit 2, realizing the heating of the pot wall.

[0064] The "width" in "at least part of the width of the first winding ring segment 21 is d1, at least part of the width of the second winding ring segment 22 is d2, and d1 is greater than d2" refers to the distance between the innermost turn of the multi-turn coil of the winding unit 2 and the outermost turn of the multi-turn coil in the direction away from the geometric center of the winding unit 2. For details, please refer to Figure 2 As shown, it can be achieved by reducing the winding length of the corresponding area of the second winding ring segment 22; it can also be that when the adjacent winding line segments in each winding ring segment are arranged in parallel between the winding of the first winding ring segment 21 and the second winding ring segment 22, the winding gap of the first winding ring segment 21 is set to be greater than the winding gap of the second winding ring segment 22; of course, when the adjacent winding line segments in each winding ring segment are not arranged in parallel, it will cause the winding gap to be uneven, but the other partial winding line segments can be adjusted adaptively to finally achieve d1 greater than d2.

[0065] The "winding center of the winding unit 2 is located on the side close to the second winding ring segment 22 of its geometric center" can be achieved by setting the winding unit 2 into shapes such as a quasi-sector or a quasi-triangle, and adjusting the geometric center by adjusting the shape of the winding unit 2.

[0066] It can be understood that, according to Ampere's rule, the magnetic poles formed by the winding unit 2 correspond to the inner ring region of the ring. When "d1 is greater than d2" or "the winding center is located on the side of its geometric center close to the second winding ring segment 22", the magnetic poles of the corresponding winding unit 2 are all formed in the region close to the outer peripheral edge of the bracket, so as to achieve the largest possible heating range for the pot wall.

[0067] Of course, the specific ways to implement the width of the first winding ring segment 21 being set to be greater than the width of the second winding ring segment 22 and the winding center of the winding unit 2 being located on the side of its geometric center close to the second winding ring segment 22 are not limited to the above examples. Those skilled in the art may make other changes under the inspiration of the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same as or similar to those of the embodiments of this specification, they should all be covered within the protection scope of the embodiments of this specification.

[0068] "The central angle of the bracket 1 corresponding to the winding unit 2" refers to the angle formed by bending the two sides of the outermost layer of the first winding ring segment 21 in the winding unit 2 towards the center of the bracket 1. For specific details, please refer to Figure 1 As shown, the central angle of the bracket 1 corresponding to the winding unit 2 is an acute angle, so that the winding unit 2 protrudes more towards the center of the bracket 1 to increase the magnetic field in the middle of the coil disk.

[0069] In the technical solution provided by the present utility model, by forming the magnetic pole in the middle of at least one winding unit 2 on the side close to the corresponding second winding ring segment 22, the magnetic pole formed in the middle of the winding unit 2 can be closer to the edge side of the bracket 1, and can perform a coupling action with the position of the corresponding pot wall, increasing the heating range of the pot wall, improving the uniformity of heating the bottom and the pot wall of pot utensils such as frying pans, so as to solve the problem that the existing induction cooker has a poor heating effect on the pot wall, and it is difficult to increase the heat of the pot wall even if the diameter of the coil disk is increased. And the central angle of the bracket 1 corresponding to the winding unit 2 is an acute angle, so that the winding unit 2 protrudes more towards the center of the bracket 1, which can increase the magnetic field intensity in the middle region of the coil disk to improve the heating effect of the small pot 200.

[0070] In order to further improve the heating effect of the small pot 200, further, α≥30°. In this way, by optimizing the value of the central angle α of the bracket 1 corresponding to the winding unit 2, the magnetic field intensity in the middle region of the coil disk can be improved, and the heating effect of the small pot can be further improved. If the angle of α is too small, it is easy to cause excessive cancellation of the overall magnetic field of the coil disk, resulting in a reduction in energy efficiency.

[0071] Further, 40° ≤ α ≤ 50°. In the technical solution of the present utility model, by further optimizing the value of the central angle α of the bracket 1 corresponding to the winding unit 2, the magnetic field intensity in the middle of the coil disk is enhanced, and a better heating effect can be achieved for heating a small pot.

[0072] In order to make the middle region of the coil disk have a strong magnetic field, refer to Figure 3 , the plurality of winding units 2 define a first inner region 23, and the diameter of the circumscribed surface of the first inner region 23 is d, where d ≤ 40 mm.

[0073] In the technical solution of the present utility model, since the magnetic poles of two adjacent winding units 2 are opposite, the magnetic fields generated in the first inner region 23 have a superimposed effect. While the magnetic poles of two relatively arranged winding units 2 are the same, if the distance is relatively close, the magnetic fields generated in the first inner region 23 have a strong canceling effect, and if the distance is relatively far, it will affect the magnetic field effect of the overall coil disk. Considering that electronic components need to be installed in the middle region of the coil disk, therefore, 5 mm ≤ d ≤ 40 mm can better ensure the magnetic field intensity in the middle region of the coil disk to better meet the heating effect of the small pot.

[0074] In order to further increase the magnetic field intensity in the middle region of the coil disk to further improve the heating effect of the small pot, in the technical solution of the present utility model, the plurality of winding units 2 have a first side and a second side, and the first side is arranged corresponding to the appliance to be heated;

[0075] The coil disk assembly 100 further includes a plurality of magnet structures 3 arranged on the second side of the plurality of winding units 2. The plurality of magnet structures 3 define a second inner region 31, and the maximum side length of the second inner region 31 is D, where D ≤ 80 mm.

[0076] By adopting the above technical solution, a plurality of magnet structures 3 are arranged on the second side of the winding unit 2, and the plurality of magnet structures 3 define a second inner region 31, and the maximum side length of the second inner region 31 does not exceed 80 mm. Generally, the diameter of the bottom of the small pot does not exceed 80 mm. In this way, the plurality of magnet structures 3 can enhance the magnetic field intensity in the middle region of the coil disk to improve the heating effect of the bottom of the small pot, and can also improve the heating effect of the wall of the small pot. It should be noted that the first side and the second side are two opposite sides in one direction.

[0077] Further, refer to Figure 4 and Figure 5 , the plurality of winding units 2 have a first side and a second side, and the first side is arranged corresponding to the appliance to be heated;

[0078] The coil disk assembly 100 further includes a plurality of magnet structures 3 disposed on the second side of the plurality of winding units 2. The magnet structure 3 includes at least one magnet portion, one end of the magnet portion corresponding to one of the winding units 2 and the other end corresponding to another winding unit 2.

[0079] In the technical solution of the present utility model, the magnet structure 3 includes at least one magnet portion. One end of each magnet portion is correspondingly arranged with one winding unit 2, and the other end is correspondingly arranged with another winding unit 2. Thus, each magnet portion at least straddles two winding units 2 to enhance the magnetic field intensity of the winding unit 2 and improve the heating effect on the bottom and wall of the pot. It can be understood that the two winding units 2 corresponding to one end and the other end of the magnet portion can be two adjacent winding units 2.

[0080] In order to better enhance the magnetic field intensity of the winding unit 2, the magnet portion is provided as a plurality. Thus, by providing a plurality of magnet portions, the magnetic field intensity of the winding unit 2 can be effectively enhanced, and the heating effect on the bottom and wall of the pot can be improved.

[0081] Specifically, at least one of the magnet portions is provided as a first magnet portion 32. The first magnet portion 32 includes two magnetic end portions 321 and an intermediate portion 322. The two magnetic end portions 321 are correspondingly arranged in the central regions of two adjacent winding units 2; the intermediate portion 322 extends from one magnetic end portion 321 to the other magnetic end portion 321.

[0082] By adopting the above technical solution, the two magnetic end portions 321 of the first magnet portion 32 are correspondingly arranged in the central regions of two adjacent winding units 2, enabling more magnetic fluxes to pass through the magnetic circuit, reducing magnetic leakage, changing the path of the magnetic circuit, making the magnetic field more concentrated and evenly distributed in the required region, thereby improving the efficiency and performance of the magnetic circuit, increasing the magnetic field intensity in the middle of the two winding units 2, and further enhancing the energy efficiency of the coupling effect with the pot wall.

[0083] In an embodiment of the present utility model, the two magnetic end portions 321 and the intermediate portion 322 are integrally provided. Thus, by only providing one first magnet portion 32, the enhancement of the magnetic field intensity of two adjacent winding units 2 can be achieved, and the number of components can be reduced as much as possible.

[0084] Further, the magnet portion further includes a second magnet portion 33. The second magnet portion 33 is correspondingly arranged with the first winding loop segment 21 of two adjacent winding units 2.

[0085] In the technical solution of the present utility model, one end of the second magnet part is correspondingly arranged opposite to a first winding ring segment 21, and the other end of the second magnet part is correspondingly arranged opposite to another first winding ring segment 21. These two first winding ring segments 21 are arranged adjacent to each other, that is, both ends of the second magnet part are correspondingly arranged opposite to two adjacent first winding ring ends, and the second magnet part is arranged close to the center of the bracket 1 to enhance the magnetic field intensity in the middle area of the coil disc and improve the heating effect of the small pot. It can be understood that there are multiple second magnet parts, and the multiple second magnet parts define the second inner surrounding area 31.

[0086] Specifically, the materials of the first magnet part 32 and the second magnet 33 include at least one of ferrite and nanocrystalline.

[0087] In an embodiment of the present utility model, the multiple winding units 2 are arranged in series or in parallel.

[0088] When the multiple winding units 2 are arranged in series, only by adjusting the winding direction, it can be achieved that when powered on, the current directions of the adjacent winding units 2 are set in the opposite direction. In this way, the winding method is simple and convenient for production and processing.

[0089] When the multiple winding units 2 are arranged in parallel, each winding unit 2 can be independently controlled to be powered on. Not only can the current directions of the adjacent winding units 2 be set in the opposite direction, but also in special scenarios, the current directions of each winding unit 2 can be flexibly controlled, which is more flexible and convenient in electronic control. And when some of the winding units 2 fail, the other winding units 2 are not affected and can still work normally.

[0090] Specifically, in this embodiment, two adjacent winding units 2 are riveted, welded or screwed together so that the multiple winding units 2 can be stably connected and conducted. Of course, other possible connection forms can also be used, which can be specifically determined according to the actual situation, and the embodiments of this specification do not limit this.

[0091] The present utility model also provides an electromagnetic heating device, which includes the coil disc assembly 100 and the electronic control device of the above embodiments. The specific structure of the coil disc assembly 100 refers to the above embodiments. Since this electromagnetic heating device adopts all the technical solutions of the above all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0092] The electromagnetic heating device can be an induction cooker, an electromagnetic heating stove top, etc. As long as the electromagnetic heating device has the coil disc assembly 100, it belongs to the electromagnetic heating device described in the present utility model.

[0093] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A coil disk assembly, characterized in that, Comprising: A bracket; And A plurality of winding units, arranged on the bracket, the plurality of winding units being circumferentially distributed along the bracket, each winding unit being annularly arranged and having a first winding ring section close to the center of the bracket and a second winding ring section close to the edge of the bracket; In a pair of winding units, the current flow directions of the two winding units are set to be opposite so that opposite magnetic poles are formed in the middle parts of the two winding units, and in at least one winding unit, the width of the first winding ring section is d1, the width of the second winding ring section is d2, and d1 > d2; Wherein, the central angle of the bracket corresponding to the winding unit is α, 0° < α < 90°.

2. A coil disk assembly, characterized in that, Comprising: A bracket; And A plurality of winding units, arranged on the bracket, the plurality of winding units being circumferentially distributed along the bracket, each winding unit being annularly arranged and having a first winding ring section close to the center of the bracket and a second winding ring section close to the edge of the bracket; In a pair of winding units, the current flow directions of the two winding units are set to be opposite so that opposite magnetic poles are formed in the middle parts of the two winding units, and in at least one winding unit, the winding center of the winding unit is located on one side close to the second winding ring section of its geometric center; Wherein, the central angle of the bracket corresponding to the winding unit is α, 0° < α < 90°.

3. The coil disk assembly according to claim 1 or 2, characterized in that, α≥30°。 4. The coil disk assembly according to claim 3, characterized in that 40°≤α≤50°。 5. The coil disk assembly according to claim 1 or 2, characterized in that, The plurality of winding units define a first inner peripheral region, and the diameter of the circumscribed circle of the first inner peripheral region is d, d ≤ 40 mm.

6. The coil disk assembly according to claim 1 or 2, characterized in that, The plurality of winding units have a first side and a second side, and the first side is used to correspond to the appliance to be heated; The coil disc assembly further includes a plurality of magnet structures arranged on the second side of the plurality of winding units, the plurality of magnet structures defining a second inner peripheral region, and the maximum side length of the second inner peripheral region is D, D ≤ 80 mm.

7. The coil disk assembly according to claim 1 or 2, characterized in that, The plurality of winding units have a first side and a second side, and the first side is used to correspond to the appliance to be heated; The coil disc assembly further includes a plurality of magnet structures arranged on the second side of the plurality of winding units, and the magnet structure includes at least one magnet part, one end of the magnet part corresponding to one winding unit and the other end corresponding to another winding unit.

8. The coil disk assembly according to claim 7, characterized in that, The magnet structure includes a plurality of the magnet parts.

9. The coil disk assembly according to claim 7, wherein, At least one of the magnet parts is set as a first magnet part, and the first magnet part includes: Two magnetic end parts, arranged corresponding to the central regions of two adjacent winding units; and An intermediate part, extending from one magnetic end part to the other magnetic end part.

10. The coil disk assembly according to claim 9, wherein, The two magnetic end parts and the intermediate part are integrally arranged.

11. The coil disk assembly according to claim 9, characterized in that, The magnet part further includes a second magnet part, and both ends of the second magnet part are arranged corresponding to the first winding ring sections of two adjacent winding units.

12. The coil disk assembly according to claim 1 or 2, characterized in that, The plurality of winding units are arranged in series or in parallel.

13. An electromagnetic heating device, characterized in that, Including the coil disc assembly according to any one of claims 1 to 12.

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