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 at least one pair of winding units, 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 the winding units are arranged on the support. In at least one winding unit, a magnetic pole formed in the middle of the winding unit is close to one side of the corresponding second winding ring section, so that the magnetic field can be coupled with the position of the corresponding pot wall from one side close to the edge of the support, and the current directions of the lead sections, close to each other, of the two adjacent first winding ring sections are consistent. The distance d between every two adjacent first winding ring sections is larger than or equal to 5 mm, so that the magnetic field intensity of the wire connecting area between every two adjacent winding units is adjusted, the heating concentration degree of the corresponding pot bottom is weakened, and the heating uniformity of the pot can be further improved.

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 workpiece to be heated is a wok, due to the too large distance between the side wall discs, 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. Summary of the Utility Model

[0003] In view of the above technical problems, the present application considers using at least a pair of annular winding units arranged along the circumferential direction of the bracket on the bracket. 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 the magnetic poles formed in the middle of the winding unit are close to the side of the corresponding second winding ring segment, so that the magnetic field can start from the side close to the edge of the bracket and couple with the position of the corresponding pot wall to increase the induction height of the electromagnetic field, so that the pot wall can also be heated. Since the connection area between two adjacent winding units is an electromagnetic field strong area, that is, the heating effect is the strongest. When an electromagnetic field is generated by energization for heating, the area of the pot wall corresponding to it is a heating hot area, which is prone to overheating, dry heat, and bottom burning, while the areas at other positions are relatively too cold and lack heat, resulting in uneven heating. How to solve the problem of uneven heating is a further problem faced by this design.

[0004] To achieve the above object, the utility model provides a coil disc assembly, comprising:

[0005] A bracket; and,

[0006] At least a pair of winding units, each pair of the winding units includes two winding units arranged on the bracket and distributed along the circumferential direction of the bracket. Each of the winding units 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;

[0007] 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 of the two winding units. And in at least one of the winding units, 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;

[0008] Wherein, in the circumferential direction of the bracket, a first non-wiring area is formed between two adjacent first winding ring segments, and the width d of the first non-wiring area is ≥ 5 mm.

[0009] The present utility model also provides a coil disk assembly, comprising:

[0010] a bracket; and

[0011] at least one pair of winding units, each pair of the winding units comprising two winding units disposed on the bracket and distributed circumferentially along the bracket, each of the winding units being annularly arranged and having a first winding loop section close to the center of the bracket and a second winding loop section close to the edge of the bracket;

[0012] In the 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 of the two winding units, and in at least one of the winding units, the winding center of the winding unit is located on one side of its geometric center close to the second winding loop section;

[0013] Wherein, in the circumferential direction of the bracket, a first non-wiring area is formed between two adjacent first winding loop sections, and the width d of the first non-wiring area is d≥5mm.

[0014] In one embodiment, d≤40mm.

[0015] In one embodiment, one end of the plurality of first winding loop sections close to the center of the bracket defines a second non-wiring area, and the diameter D of the second non-wiring area is D≤10mm.

[0016] In one embodiment, the coil disk assembly further comprises at least one first temperature measuring element disposed in the first non-wiring area; and / or

[0017] One end of the plurality of first winding loop sections close to the center of the bracket defines a second non-wiring area, and the coil disk assembly further comprises a second temperature measuring element disposed in the second non-wiring area.

[0018] In one embodiment, d1>1.2d2.

[0019] In one embodiment, the first winding loop section protrudes towards the center of the bracket from both ends to the middle section, so as to have two side edges arranged at an angle, and each of the side edges is straight;

[0020] In each adjacent pair of the winding units, the first non-wiring area is defined between two relatively arranged side edges.

[0021] In one embodiment, two relatively arranged side edges of two adjacent winding units are parallel to each other.

[0022] In one embodiment, in the direction from the center to the edge of the bracket, the distance between two adjacent wire-winding units between two opposite sides is gradually increasing.

[0023] In one embodiment, every two adjacent wire-winding units include:

[0024] A first wire-winding unit, having a first input end, a first winding, and a first output end. The first winding is sequentially wound outward from the first input end along the first clockwise direction, and the first output end is connected to the outer end of the first winding; and,

[0025] A second wire-winding unit, having a second input end, a second winding, and a second output end. The second winding is sequentially wound outward from the second input end along the second clockwise direction opposite to the first clockwise direction, and the second output end is connected to the outer end of the second winding.

[0026] The present utility model further provides an electromagnetic heating device, and the electromagnetic heating device includes a coil disc assembly. The coil disc assembly includes:

[0027] A bracket; and,

[0028] At least one pair of wire-winding units, and each pair of wire-winding units includes two wire-winding units arranged on the bracket and distributed along the circumferential direction of the bracket. Each wire-winding unit is annularly arranged and has a first wire-winding ring section close to the center of the bracket and a second wire-winding ring section close to the edge of the bracket;

[0029] In the pair of wire-winding units, the current directions of the two wire-winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two wire-winding units. And in at least one wire-winding unit, the width of the first wire-winding ring section is d1, and the width of the second wire-winding ring section is d2, wherein d1 is greater than d2;

[0030] Wherein, in the circumferential direction of the bracket, a first non-wiring area is formed between two adjacent first wire-winding ring sections, and the width d of the first non-wiring area is ≥5 mm.

[0031] The present utility model further provides an electromagnetic heating device, and the electromagnetic heating device includes a coil disc assembly. The coil disc assembly includes:

[0032] A bracket; and,

[0033] At least one pair of wire-winding units, and each pair of wire-winding units includes two wire-winding units arranged on the bracket and distributed along the circumferential direction of the bracket. Each wire-winding unit is annularly arranged and has a first wire-winding ring section close to the center of the bracket and a second wire-winding ring section close to the edge of the bracket;

[0034] 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 one side of its geometric center close to the second winding ring segment;

[0035] Wherein, in the circumferential direction of the bracket, a first non-wiring area is formed between two adjacent first winding ring segments, and the width d of the first non-wiring area is d≥5mm.

[0036] In the technical solution provided by the present invention, 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 parts of the two winding units, thereby forming a closed magnetic field between the two winding units. In at least one winding unit, the magnetic pole formed in the middle is on the side close to the corresponding second winding ring segment, so that the magnetic field can couple with the position of the corresponding pot wall from the side close to the edge of the bracket, increasing the heating range of the pot wall and improving the heating uniformity of the bottom and the wall of the pot. And the current directions of the wire segments of two adjacent first winding ring segments adjacent to each other are the same, resulting in a relatively concentrated magnetic field in this area. By setting the distance d between two adjacent first winding ring segments to be d≥5mm, the magnetic field strength in the connection area between two adjacent winding units is adjusted, weakening the heating concentration at this place of the corresponding bottom of the pot, and further improving the heating uniformity of the pot. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0038] Figure 1 It is a three-dimensional schematic diagram of the coil disk assembly targeted by the present invention;

[0039] Figure 2 It is a planar schematic diagram of the coil disk assembly targeted by the present invention;

[0040] Figure 3 It is a schematic diagram of an embodiment of a partial structure of the coil disk assembly provided by the present invention;

[0041] Figure 4 It is a three-dimensional schematic diagram of the coil disk assembly provided by the present invention;

[0042] Figure 5For Figure 4 Schematic diagram of a three-dimensional view of multiple winding units in

[0043] Figure 6 For Figure 4 Schematic diagram of multiple winding units, a first temperature measuring element, and a second temperature measuring element in

[0044] Figure 7 For Figure 4 Planar schematic diagram of an embodiment of multiple winding units in

[0045] Figure 8 For Figure 4 Planar schematic diagram of another embodiment of multiple winding units in

[0046] Figure 9 For Figure 1 Schematic diagram of a magnetic field formed by each pair of winding units in

[0047] Explanation of reference numerals in the drawings:

[0048] 100, coil disc assembly; 1, bracket; a, first non-wiring area; b, second non-wiring area; 2, winding unit; 201, first winding ring segment; 2011, side; 202, second winding ring segment; 21, first winding unit; 211, first input terminal; 212, first winding; 213, first output terminal; 22, second winding unit; 221, second input terminal; 222, second winding; 223, second output terminal; 3, first temperature measuring element; 4, second temperature measuring element;

[0049] 200, cookware; 2001, bottom of the pot; 2002, pot wall.

[0050] The realization, functional features, and advantages of the object of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific embodiments

[0051] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0052] 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 (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0053] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying 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, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0054] The conventional induction cooker coil disk 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 item to be heated is a wok, due to the too large sidewall disk 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 disk is increased, it is difficult to increase the heat on the pot wall. In view of the above technical problems, the present utility model refers to Figure 1 and Figure 2 , this application considers arranging a plurality of winding units arranged in a ring along the circumferential direction of the bracket on the bracket, and increasing the density of the ring segments of each winding unit close to the outer edge of the bracket to increase the induction height of the electromagnetic field, so that the pot wall can also be heated. Since the connection area between two adjacent winding units arranged adjacent to each other is an electromagnetic field strong area, that is, the heating effect is the strongest. When an electromagnetic field is generated by energization for heating, the area of the corresponding upper pot wall is a heating-up hot area, which is prone to overheating, dry heating, and bottom burning, while the areas at other positions are relatively too cold and lack heat, resulting in uneven heating. How to solve the problem of uneven heating is a further problem faced by this design.

[0055] To solve the above technical problem, the present utility model provides a coil disk assembly to solve the problem of uniform heating of cookware.

[0056] Please refer to Figures 3 to 5, the coil disc assembly 100 includes a bracket 1 and at least a pair of winding units 2. Each pair of the winding units 2 includes two winding units 2 disposed on the bracket 1 and circumferentially distributed along the bracket 1. Each of the winding units 2 is annularly arranged and has a first winding ring segment 201 near the center of the bracket 1 and a second winding ring segment 202 near the edge of the bracket 1. In a pair of the 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 parts of the two winding units 2. And in at least one of the winding units 2, the width of the first winding ring segment 201 is d1, and the width of the second winding ring segment 202 is d2, where d1 is greater than d2. Wherein, in the circumferential direction of the bracket 1, a first non-wiring area a is formed between two adjacent first winding ring segments 201, and the width d of the first non-wiring area a is ≥5 mm.

[0057] In another coil disc assembly 100 provided by the present utility model, the coil disc assembly 100 includes a bracket 1 and at least a pair of winding units 2. Each pair of the winding units 2 includes two winding units 2 disposed on the bracket 1 and circumferentially distributed along the bracket 1. Each of the winding units 2 is annularly arranged and has a first winding ring segment 201 near the center of the bracket 1 and a second winding ring segment 202 near the edge of the bracket 1. In a pair of the 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 parts of the two winding units 2. And in at least one of the winding units 2, the winding center of the winding unit 2 is located on one side closer to the second winding ring segment 202 of its geometric center. Wherein, in the circumferential direction of the bracket 1, a first non-wiring area a is formed between two adjacent first winding ring segments 201, and the width d of the first non-wiring area a is ≥5 mm.

[0058] It should be noted that in the prior art, a conventional coil disc is arranged in a circular ring spiral winding structure, and the gaps between two adjacent turns of winding are uniform and the same. Then when the conventional coil disc is coupled with the cookware 200, especially the cookware 200 of the wok type, due to the limitation of the shape characteristics of the wok, the side wall of the cookware 200 is far from the bottom, and the corresponding magnetic field density of the coil disc where it is located is small, resulting in low heating efficiency.

[0059] It should be noted that the shapes of the respective winding units 2 in the "multiple winding units 2" mentioned 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 limited to being circular. It can be square or elliptical. Each winding unit 2 can be laid flat along a surface area, and this surface area can be a plane or a curved surface. Each winding unit 2 can also be bent. Specifically, it 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 circumferential direction 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 that 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 all be regarded as "the multiple winding units 2 are distributed along the circumferential direction of the bracket 1".

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

[0062] It should be noted that according to Ampere's rule: Hold the energized solenoid with the right hand and let the four fingers point to the direction of the current. Then the end pointed by the thumb is the N pole of the energized solenoid. Thus, please refer to Figure 8 When the directions of the current flows in 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 laid flat horizontally, a magnetic pole N pole is formed on the upper side of the first winding unit and an S pole is formed on the lower side. At the same time, a magnetic pole S pole is formed on the upper side of the second winding unit and an 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 then from the S pole of the first winding unit back to the N pole of the first winding unit, thereby 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 shaped magnetic poles formed by the two winding units 2 can interact with the pot wall that is far away from the winding units 2 to achieve heating of the pot wall.

[0064] "The width of the first winding loop segment 201 is d1, and the width of the second winding loop segment 202 is d2, where d1 is greater than d2". This can be achieved by reducing the winding length in the area corresponding to the second winding loop segment 202. It can also be that when the adjacent winding line segments in each winding loop segment are arranged in parallel between the winding of the first winding loop segment 201 and the second winding loop segment 202, the winding gap of the first winding loop segment 201 is set to be greater than that of the second winding loop segment 202. Of course, when the adjacent winding line segments in each winding loop segment are not arranged in parallel, it will cause the winding gap to be uneven, but other partial winding line segments can be adjusted adaptively to ultimately achieve d1 greater than d2.

[0065] "The winding center of the winding unit 2 is located on the side closer to the second winding loop segment 202 of its geometric center". The winding unit 2 can be set in shapes such as a quasi-sector or a quasi-triangle, and the geometric center can be adjusted 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 area of the ring. When "d1 is greater than d2" or "the winding center is located on the side closer to the second winding loop segment 202 of its geometric center", the magnetic poles of the corresponding winding unit 2 are all formed in the area close to the outer periphery of the bracket, so as to achieve the largest possible heating range for the pot wall.

[0067] Of course, the specific methods for achieving the width of the first winding loop segment 201 being set to be greater than the width of the second winding loop segment 202 and the winding center of the winding unit 2 being located on the side closer to the second winding loop segment 202 of its geometric center 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 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] "A first non-wiring area a is formed between two adjacent first winding loop segments 201" means that in the area between every two adjacent first winding loop segments 201, no coils are arranged, so that there is a certain distance between two adjacent winding units 2, rather than a closely attached state.

[0069] In the technical solution provided by the present utility model, in at least one winding unit 2, the magnetic pole formed in the middle thereof is close to one side of the corresponding second winding ring segment 202, so that 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 effect with the position of the corresponding pot wall 2002, increasing the heating range of the pot wall 2002, and improving the uniformity of heating of the bottom 2001 and the pot wall 2002 of the cookware 200. The current directions of the wire segments of the two adjacent first winding ring segments 201 that are arranged adjacent to each other are the same, resulting in a relatively concentrated magnetic field in this area. By setting the distance d between the two adjacent first winding ring segments 201 that are arranged adjacent to each other to be d≥5mm, the magnetic field strength in the connection area between the two adjacent winding units 2 is adjusted, weakening the heating concentration at the corresponding bottom 2001 here, so as to further improve the heating uniformity of the cookware 200.

[0070] Further, d≤40mm. "The width d of the first non-wiring area a≤40mm" means that the two adjacent first winding ring segments 201 are controlled within this range to avoid excessive reduction of the magnetic field due to too large a spacing and form a heating blind area.

[0071] Further, please refer to Figures 7 to 8 , in the embodiment of the present utility model, one end of the plurality of first winding ring segments 201 close to the center of the bracket 1 defines a second non-wiring area b, and the diameter D of the second non-wiring area b≤10mm. With such a setting, while ensuring that the central area of the coil disk assembly 100 has a strong electromagnetic field, enabling a good heating effect at the center of the corresponding cookware 200 and further improving the heating uniformity, the second non-wiring area b also has a space for placing a temperature detection element.

[0072] Further, please refer to Figure 6 , the coil disk assembly 100 further includes at least one first temperature measurement element 3, and the first temperature measurement element 3 is arranged in the first non-wiring area a; and / or, the coil disk assembly 100 further includes a second temperature measurement element 4 arranged in the second non-wiring area b. In this way, temperature measurement elements can be arranged in a plurality of the first non-wiring areas a and the second non-wiring areas b to achieve multi-point temperature measurement, improve the temperature measurement sensitivity, and make the temperature control of the cooking appliance more accurate.

[0073] It should also be noted that because of the form of multi-point temperature measurement, the temperature control is more accurate, and the power of the coil disk assembly 100 can be adjusted in time when the temperature is too high. Then, when the coil disk assembly 100 is applied to an induction cooker, the good heat-conducting microcrystalline glass can be replaced with borosilicate glass with relatively poor heat conductivity, which can reduce the cost of panel manufacturing while achieving a sufficiently accurate temperature control function.

[0074] It should also be noted that when "d≥5mm", space is provided for the arrangement of temperature measuring elements (such as thermistors). Temperature measuring elements can be installed in multiple non-wiring areas, enabling multi-point temperature measurement, improving temperature measurement sensitivity, and making the temperature control of the cooking appliance more accurate.

[0075] When the cookware 200 is placed, in the area required for stir-frying the cookware 200, food is more likely to gather at the bottom of the cookware 200. Therefore, the area of the coil pan assembly 100 corresponding to the bottom 2001 of the pot needs to be appropriately increased. Further, in this embodiment, d1>1.2d2. With such a setting, when the ratio range of d1 and d2 is restricted to be greater than 1.2 times, the area of the heating region formed by the multiple first winding loop segments 201 at the middle of the corresponding bracket 1 is larger than the area of the annular heating region formed by the multiple second winding loop segments 202 at the edge of the corresponding bracket 1, enabling the coil pan assembly 100 to better adapt to the actual stir-frying cooking scenario.

[0076] Specifically, the two ends of the first winding loop segment 201 protrude towards the center of the bracket 1 towards the middle segment, so as to have two side edges 2011 arranged at an angle, and each side edge 2011 is arranged in a straight line; in each two adjacent winding units 2, a first non-wiring area a is defined between the two relatively arranged side edges 2011.

[0077] It should be noted that "protruding" means protruding more towards the center compared to the arcs at both ends of the first winding loop segment 201. With such a setting, the multiple first winding loop segments 201 all protrude in the direction of approaching each other, thus avoiding the formation of a weak magnetic field area in the inner surrounding area formed by the multiple winding units 2.

[0078] In the actual application scenario, when the cookware is small and cannot cover the area corresponding to the second winding loop segment 202, cookware of different diameters can all achieve heating corresponding to the area where the first winding loop segment 201 is located.

[0079] In this way, when opposite-direction currents are passed through the multiple winding units 2, the current directions of the wire segments where two adjacent winding units 2 are close to each other are the same, and the magnetic fields in this area are superimposed, capable of generating a higher magnetic field. The first winding loop segment 201 is bent, and the number of magnetic induction lines in the blank area in the middle enclosed by the first winding loop segment 201 is small, thereby improving the problem of uneven heating caused by over-concentration of heating at the bottom of the cookware 200.

[0080] "Each of the side edges 2011 is arranged in a straight line". Since the magnetic field generation method of a straight wire segment is relatively simple, it can reduce the energy loss in the coil, thus improving the energy utilization efficiency. At the same time, because the magnetic field generated by the straight wire segment is easier to calculate and control, it can usually form a more uniform magnetic field distribution, which helps to improve the efficiency and stability of the coil. At the same time, the structure of the straight wire segment is simpler, and it is more convenient and fast to process and install, reducing the engineering complexity of the system, simplifying the design and debugging process, and being beneficial to improving the reliability and stability of the system.

[0081] In one embodiment, please refer to Figure 7 , two adjacent winding units 2 are arranged such that two opposite side edges 2011 are parallel to each other. The magnetic field directions of the two side edges 2011 are also parallel, which helps to reduce the electromagnetic interference between the coils and avoid unnecessary electromagnetic coupling and interference caused by the winding units 2 crossing or interlacing with each other, thus affecting the performance and stability of the circuit. At the same time, it can reduce energy loss and improve the efficiency of electromagnetic energy transmission.

[0082] In another embodiment, please refer to Figure 8 , in the direction from the center to the edge of the bracket 1, the distance between two adjacent side edges 2011 of the two opposite winding units 2 is arranged to increase gradually. In this way, according to the installation requirements of the first temperature measuring element 3, it can be selected to install at a reasonable distance between the two side edges 2011, which is convenient for installation.

[0083] Furthermore, multiple winding units 2 can be arranged in series or in parallel. When multiple winding units 2 are arranged in series, only by adjusting the winding direction can the current directions of adjacent winding units 2 be set in the opposite direction when powered on. Specifically, please refer to Figure 5 , each two adjacent winding units 2 include a first winding unit 21 and a second winding unit 22. The first winding unit 21 has a first input end 211, a first winding 212, and a first output end 213. The first winding 212 is wound outward in sequence from the first input end 211 along the first clockwise direction, and the first output end 213 is connected to the outer end of the first winding 212; the second winding unit 22 has a second input end 221, a second winding 222, and a second output end 223. The second winding 222 is wound outward in sequence from the second input end 221 along the second clockwise direction opposite to the first clockwise direction, and the second output end 223 is connected to the outer end of the second winding 222. In this way, the winding method is simple and convenient for production and processing.

[0084] The present utility model further provides an electromagnetic heating device, and the electromagnetic heating device includes the coil disc assembly 100 of each of the above embodiments. For the specific structure of the coil disc assembly 100, reference may be made to the above embodiments. Since this electromagnetic heating device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details thereof will not be repeated herein.

[0085] The electromagnetic heating device may be an induction cooker or an electric pressure cooker, etc. Any electromagnetic heating device having the coil disc assembly 100 belongs to the electromagnetic heating device described in the present utility model.

[0086] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the technical concept 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: include: Bracket; as well as, A plurality of winding units are arranged on the bracket, the plurality of winding units are distributed along the circumference of the bracket, each of the winding units is arranged in a ring shape, and 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; In a pair of the winding units, the directions of the currents of the two winding units are set to be opposite, so that the middle parts of the two winding units form opposite magnetic poles, and in at least one of the winding units, the width of the first winding loop segment is d1, the width of the second winding loop segment is d2, and d1 is greater than d2; Wherein, in the circumferential direction of the bracket, a first non-wiring area is formed between two adjacent first winding ring segments, and the width d of the first non-wiring area is ≥5 mm.

2. The coil disk assembly according to claim 1, characterized in that d1>1.2d2.

3. A coil disk assembly, characterized in that: include: Bracket; as well as, A plurality of winding units are arranged on the bracket, the plurality of winding units are distributed along the circumference of the bracket, each of the winding units is arranged in a ring shape, and 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; In a pair of the winding units, the directions of the currents of the two winding units are set to be opposite, so that the middle parts of the two winding units form opposite magnetic poles, and in at least one of the winding units, the winding center of the winding unit is located on a side of its geometric center close to the second winding loop segment; Wherein, in the circumferential direction of the bracket, a first non-wiring area is formed between two adjacent first winding ring segments, and the width d of the first non-wiring area is ≥5 mm.

4. The coil disk assembly according to claim 1 or 3, characterized in that: d≤40mm.

5. The coil disk assembly according to claim 1 or 3, characterized in that: One end of the plurality of first winding loop segments close to the center of the bracket defines a second non-wiring area, and a diameter D of the second non-wiring area is ≤10 mm.

6. The coil disk assembly according to claim 1 or 3, characterized in that: The coil disk assembly further comprises at least one first temperature measuring element, wherein the first temperature measuring element is arranged in the first non-wiring area; and / or, One end of the plurality of first winding loop segments close to the center of the support defines a second non-wiring area, and the coil disk assembly further includes a second temperature measuring element arranged in the second non-wiring area.

7. The coil disk assembly according to claim 1 or 3, characterized in that: The first winding ring segment is protruded from both ends to the middle section close to the center of the bracket to have two side edges arranged at an angle, and each of the side edges is arranged in a straight line; In each of the two adjacent winding units, the first non-wiring area is defined between the two oppositely disposed side edges.

8. The coil disk assembly according to claim 7, characterized in that Two adjacent winding units are arranged in parallel with two oppositely arranged sides.

9. The coil disk assembly according to claim 7, characterized in that In the direction from the center of the bracket to the edge, the distance between two side edges of two adjacent winding units that are arranged opposite to each other is gradually increased.

10. The coil disk assembly according to claim 1 or 3, characterized in that: Each of the two adjacent winding units comprises: A first winding unit has a first input end, a first winding and a first output end, wherein the first winding is sequentially wound outward from the first input end along a first clockwise direction, and the first output end is connected to an outer end of the first winding; and The second winding unit has a second input end, a second winding and a second output end. The second winding is wound outward in sequence from the second input end along a second clockwise direction opposite to the first clockwise direction. The second output end is connected to the outer end of the second winding.

11. An electromagnetic heating device, characterized in that: The invention comprises a coil disk assembly as claimed in any one of claims 1 to 10.

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