Coil panel and stove

Abstract

The utility model relates to the technical field of household appliances, in particular to a coil panel and a stove. The coil panel provided by the utility model is used for heating cookware, and comprises a panel body; the electromagnetic coil comprises an outer coil and an inner coil which are distributed at intervals inside and outside in the radial direction of the plate body, the outer coil is used for heating the peripheral wall of the cookware, and the inner coil is used for heating the bottom wall of the cookware; the first magnetic part is arranged on the plate body, at least part of the structure of the first magnetic part is located between the outer coil and the inner coil, and the first magnetic part is used for guiding magnetic induction lines of the outer coil to radiate towards the peripheral wall of the cookware. According to the coil panel provided by the invention, the compatibility is improved, so that the coil panel is suitable for cookware in different shapes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a coil disc and a stove. BACKGROUND

[0002] An electromagnetic oven is a household cooking appliance based on the principle of electromagnetic induction, which generates eddy current at the bottom of the pot through an alternating magnetic field to achieve heating.

[0003] In the prior art, in order to achieve uniform heating of the pot, an electromagnetic oven with a concave disc structure is usually used to heat the bottom wall and the peripheral wall of the pot. By designing the coil disc of the electromagnetic oven as a concave structure matching the arc surface of the peripheral wall, the electromagnetic coil of the electromagnetic oven can extend to the peripheral wall area, thereby achieving heating of the bottom wall and the peripheral wall.

[0004] However, the existing electromagnetic oven has poor compatibility and cannot be applied to different shapes of pots. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a coil disc and a stove, which helps to improve the compatibility of the coil disc to be applied to different shapes of pots.

[0006] The present application provides a coil disc for heating a pot, which comprises: a disc body; an electromagnetic coil comprising an outer coil and an inner coil spaced apart along the radial direction of the disc body, the outer coil being used for heating the peripheral wall of the pot, and the inner coil being used for heating the bottom wall of the pot; and a first magnetic member arranged on the disc body, at least part of the structure of the first magnetic member being located between the outer coil and the inner coil, and the first magnetic member being used for guiding the magnetic induction lines of the outer coil to radiate to the peripheral wall of the pot.

[0007] In this way, the present application designs the outer coil and the inner coil to be spaced apart along the radial direction of the disc body, so that the outer coil and the inner coil of the coil disc can form directional heating areas for the peripheral wall and the bottom wall of the pot respectively, achieve the effect of uniform heating of the pot, and further improve the food cooking effect. Moreover, the coil disc of the present application can direct the magnetic field of the outer coil to the peripheral wall area of the pot through the split layout of the inner coil and the outer coil and the directional regulation of the magnetic field by the first magnetic member, avoiding relying on the physical structure to fit the curvature of the pot wall to achieve heating of the peripheral wall of the pot. Even if the outer side of the peripheral wall of the pot is not provided with a coil disc, the magnetic induction lines of the outer coil can still be guided to the position of the peripheral wall of the pot by the first magnetic member to adapt to the shape difference of different pots, improve the compatibility of the coil disc to a plurality of pots, and ensure uniform heating of the pot.

[0008] In a possible implementation, the disc body comprises a first surface facing the pot in an axial direction of the disc body and a second surface facing away from the pot, the electromagnetic coil is arranged on the first surface, the first surface is provided with a first mounting structure protruding in the axial direction of the disc body, the outer coil is arranged on the outer side of the first mounting structure, the inner coil is arranged on the inner side of the first mounting structure, and at least part of the first magnetic member is fixed to the first mounting structure.

[0009] In this way, the spatial layout of the electromagnetic coil and the magnetic member and the magnetic field distribution are optimized by the axially protruding first mounting structure of the first surface of the disc body. The axially protruding first mounting structure allows the outer coil and the inner coil to be positioned on the outer side and the inner side thereof respectively, and part of the first magnetic member is arranged in the first mounting structure, so as to separate the magnetic fields of the outer coil and the inner coil, avoid the cross interference of the magnetic fields of the outer coil and the inner coil, and allow the magnetic field generated by the outer coil to directly act on the pot wall, thereby improving the heating efficiency on the pot wall.

[0010] In a possible implementation, the first mounting structure defines a first through hole penetrating in the axial direction of the disc body, and the first magnetic member comprises a first magnetic segment extending in the axial direction of the disc body and penetrating in the first through hole.

[0011] In this way, the first through hole penetrating in the first mounting structure and the penetrating cooperation of the first magnetic segment are used to realize the regulation and optimization of the magnetic field path. The first magnetic segment extends in the axial direction and penetrates in the first through hole, and the longitudinal magnetic circuit design can avoid the cross interference of the magnetic fields of the outer coil and the inner coil and reduce the disordered diffusion of the magnetic induction lines in the disc body. In addition, the structure of the first through hole can provide a fixed channel for the first magnetic segment, so as to ensure the stability of the first magnetic segment during the magnetic field guiding process.

[0012] In a possible implementation, the first magnetic member is a plurality of first magnetic members, and the plurality of first magnetic members are distributed in a circumferential direction of the disc body, and the first mounting structure is a plurality of first mounting structures corresponding to the plurality of first magnetic members.

[0013] In this way, the circumferential interval distribution design of the plurality of first magnetic members and the plurality of first mounting structures corresponding thereto can realize the segmented guiding of the magnetic field. The plurality of first magnetic members are uniformly arranged in the circumferential direction of the disc body, each first magnetic member is fixed by an independent protruding first mounting structure to form a magnetic pole array surrounding the circumferential wall of the pot, so that the magnetic field of the outer coil can be segmented and directionally regulated. Each first magnetic member can guide the magnetic induction lines of the outer coil to radiate to the pot wall area at the position of the corresponding first mounting structure, so as to avoid the local heating blind area caused by the uneven circumferential magnetic field distribution, and also to enhance the uniformity of the heating of the pot wall.

[0014] In a possible implementation, an axial height of the first magnetic segment is not less than a height of any one of the outer coil and the inner coil.

[0015] In this way, by limiting the axial height of the first magnetic segment to be not less than the height of the inner coil and the outer coil, the magnetic field generated by the outer coil can be fully captured and oriented, and the magnetic field escape or blind area caused by insufficient height of the first magnetic segment can be avoided. Meanwhile, the height design can enable the first magnetic segment to form a continuous magnetic path barrier in the transition area between the circumferential wall and the bottom wall of the pot, thereby enhancing the vertical radiation intensity of the outer coil magnetic field to the circumferential wall, and effectively isolating the magnetic field interference between the inner coil and the outer coil, to ensure efficient focusing and heating of the inner coil to the pot bottom.

[0016] In a possible implementation, the first magnetic member further includes a second magnetic segment, a first end of the second magnetic segment is connected with the first magnetic segment, and a second end of the second magnetic segment extends outward along the radial direction of the disc body, so that the second magnetic segment is opposite to the outer coil.

[0017] In this way, by extending the second magnetic segment outward along the radial direction of the disc body from the end of the first magnetic segment, a magnetic shielding barrier covering the lower part of the outer coil can be formed, and the magnetic field path can be constrained to the circumferential wall direction of the pot. Through the above design, the second magnetic segment can effectively reduce the invalid radiation of the outer coil magnetic field between the pot bottom and the coil disc, and reduce the energy loss caused by downward penetration of the magnetic field.

[0018] In a possible implementation, the first magnetic member further includes a third magnetic segment, the third magnetic segment is parallel to the first magnetic segment, and the third magnetic segment is connected with the second end of the second magnetic segment; the first surface is further provided with a second mounting structure protruding along the axial direction of the disc body, the second mounting structure defines a second through hole penetrating along the axial direction of the disc body, and the third magnetic segment is arranged in the second through hole.

[0019] In this way, by the combined design of the third magnetic segment and the second mounting structure, a synergistic mechanism of closed magnetic circuit and multi-stage magnetic guide can be constructed. The third magnetic segment is parallel to the first magnetic segment and connected through the end of the second magnetic segment, to form a U-shaped closed magnetic circuit, which simultaneously wraps the outer coil region in the radial and axial directions, thereby reducing the magnetic resistance and improving the magnetic energy transmission efficiency through the closed loop, and enabling the third magnetic segment and the first magnetic segment to be distributed in parallel to realize bidirectional guidance of the magnetic induction lines of the outer coil, to enhance the all-around coverage of the outer coil to the circumferential wall of the pot.

[0020] In a possible implementation, the outer coil includes a plurality of first coil layers formed by winding, and the plurality of first coil layers are arranged along the axial direction of the disc body.

[0021] Therefore, the plurality of first layers arranged axially can form a multi-layer magnetic field superposition, and the magnetic field generated by each first layer can be enhanced layer by layer in the vertical direction to act on different height regions of the circumferential wall of the pot. The plurality of first layers arranged axially can not only improve the heating intensity of the circumferential wall of the pot through longitudinal accumulation of the magnetic field, but also avoid the dispersion of the magnetic field caused by horizontal misalignment of the first layers.

[0022] In a possible implementation, the number of the first layers is greater than or equal to 3; and / or the inner coil comprises a plurality of second layers arranged around the disc body, and the number of the first layers is greater than the number of the second layers.

[0023] Therefore, because the number of the second layers of the inner coil is less than the number of the first layers of the outer coil, the magnetic field of the inner coil can be concentrated to cover the core area of the pot bottom, and the dispersion of the magnetic field acting on the bottom wall and the attenuation of the thermal efficiency caused by excessive layering can be avoided.

[0024] In a possible implementation, the first surface is further provided with first partition ribs distributed along the radial direction of the disc body, and a first wire slot is defined between any two adjacent first partition ribs, and the outer coil is arranged around the first wire slot; and / or the first surface is further provided with a plurality of second partition ribs distributed along the radial direction of the disc body, and a second wire slot is defined between any two adjacent second partition ribs, and the inner coil is arranged around the second wire slot.

[0025] Therefore, by arranging the first wire slot and the second wire slot, the inner coil and the outer coil can be constrained by the slot walls to ensure the consistency of the winding spacing of the inner coil and the outer coil, and the magnetic field deviation or local uneven intensity caused by free winding can be avoided.

[0026] In a possible implementation, the inner coil comprises at least a first coil group and a second coil group, and the first coil group and the second coil group are arranged at intervals inside and outside.

[0027] Therefore, by arranging the first coil group and the second coil group at intervals inside and outside, the inner coil can form independent heating units for the core area and the transition area of the pot bottom. The first coil group and the second coil group can be located on the inner side and the outer side of the inner coil respectively, wherein the first coil group on the inner side can cover the central area of the pot bottom to improve the local heating intensity, and the second coil group on the outer side can extend to the joint area of the pot bottom and the circumferential wall to eliminate the heating blind area of the joint area and improve the uniformity of heating.

[0028] In a possible implementation, the coil disc further comprises a second magnetic member, at least part of the structure of the second magnetic member is arranged at the bottom of the inner coil, and the second magnetic member is configured to guide the magnetic field lines of the inner coil to radiate toward the bottom wall of the pot.

[0029] Thus, by arranging at least part of the structure of the second magnetic member at the bottom of the inner coil, the application can form a magnetic shielding barrier covering the lower part of the inner coil, thereby restricting the magnetic field path and making the magnetic lines of force vertically converge towards the bottom wall of the pot, so as to improve the heating efficiency of the bottom wall of the pot.

[0030] In a possible implementation, the inner diameter of the outer coil is greater than or equal to 170 mm, and the outer diameter of the outer coil is greater than or equal to 200 mm.

[0031] Thus, by limiting the size of the inner diameter and the outer diameter of the outer coil, it can be ensured that the magnetic field generated by the outer coil acts on the circumferential wall of the pot and avoids the core heating area of the bottom wall of the pot, so as to avoid ineffective dissipation of the magnetic field and achieve directional heating of the circumferential wall of the pot.

[0032] In a possible implementation, the ratio of the number of strands a of the outer coil to the number of strands b of the inner coil is 0.2≤a / b≤1.5.

[0033] Thus, by setting the strand ratio of the outer coil to the inner coil, the application can balance the magnetic field energy distribution of the pot wall and the pot bottom, avoid too low strand number of the outer coil, which leads to a decrease in the heating intensity of the pot wall, and also avoid too high strand number of the outer coil, which leads to insufficient heat production of the pot bottom and unbalanced fire distribution.

[0034] In a second aspect, the application provides a stove, which comprises the coil disc of any of the possible implementations described above.

[0035] Thus, the stove of the application adopts the coil disc described above, and by the split layout of the inner coil and the outer coil of the coil disc in combination with the directional regulation of the magnetic field by the first magnetic member, the magnetic field of the outer coil can act on the circumferential wall area of the pot, avoiding the dependence on the physical structure to match the curvature of the pot wall to achieve heating of the circumferential wall of the pot. Even if the curvature of the pot wall does not match the coil disc, the magnetic lines of force of the outer coil can still be guided to the actual pot wall position by the first magnetic member to adapt to different pots, such as curved woks, flat woks, flat soup pots, etc., so as to improve the compatibility of the stove for different pots. Moreover, the stove of the application adopts the coil disc described above, which can optimize the heating efficiency of the circumferential wall and the bottom wall of the pot, increase the user experience during cooking, and improve the taste of dishes. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0037] Figure 1A structure schematic diagram of a coil panel provided by an embodiment of the present application is shown in FIG. 1.

[0038] Figure 2 A partial structure schematic diagram of a coil panel provided by an embodiment of the present application is shown in FIG. 2.

[0039] Figure 3 An exploded view of a coil panel provided by an embodiment of the present application is shown in FIG. 3.

[0040] Figure 4 A use scenario diagram of a coil panel provided by an embodiment of the present application is shown in FIG. 4.

[0041] Legend of reference signs:

[0042] 1 - coil panel

[0043] 10 - panel body; 110 - first surface; 111 - first mounting structure; 1111 - first through hole; 112 - second mounting structure; 1121 - second through hole; 113 - first partition rib; 114 - first wire slot; 115 - second partition rib; 116 - second wire slot; 120 - second surface

[0044] 20 - electromagnetic coil; 210 - outer coil; 211 - first coil layer; 220 - inner coil; 221 - second coil layer; 222 - first coil group; 223 - second coil group

[0045] 30 - first magnetic member; 31 - first magnetic segment; 32 - second magnetic segment; 33 - third magnetic segment

[0046] 40 - second magnetic member DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more apparent and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0048] As shown in the background, in the prior art, in order to achieve uniform heating of a pot, an electromagnetic oven with a concave disc structure is usually used to heat the bottom and wall of the pot. By designing the coil panel of the electromagnetic oven as a concave structure matching the arc surface of the pot wall, the electromagnetic coil of the electromagnetic oven can extend to the pot wall area, thereby achieving heating of the bottom and wall of the pot. However, the existing electromagnetic oven has poor compatibility and cannot be applied to different shapes of pots.

[0049] Therefore, the coil disc and the stove provided in the application can make the outer coil and the inner coil of the coil disc form directional heating areas for the circumferential wall and the bottom wall of the pot respectively, so that the pot is uniformly heated. In addition, the coil disc in the application can make the magnetic field of the outer coil act on the circumferential wall area of the pot by the directional regulation of the first magnetic member on the magnetic field and the split layout of the inner coil and the outer coil, so as to avoid relying on the physical structure to fit the curvature of the pot wall to heat the circumferential wall of the pot. Even if the coil disc is not arranged outside the circumferential wall of the pot, the magnetic induction lines of the outer coil can still be guided to the position of the circumferential wall of the pot by the first magnetic member to adapt to the shape difference of different pots, so as to improve the compatibility of the coil disc for various pots while ensuring that the pot is uniformly heated.

[0050] Hereinafter, the application will be described in detail with reference to the accompanying drawings. Figure 1 、 Figure 2 、 Figure 3 The coil disc 1 provided in the application can be used for heating a pot. Specifically, an alternating current can be connected to the coil disc 1, so that a high-frequency alternating magnetic field is generated. When a magnetic conductive pot (such as an iron pot) is placed above the coil disc 1, the magnetic field can penetrate the bottom of the pot. The internal part of the pot is inducted by the magnetic field to generate eddy current, and the eddy current generates Joule heat effect under the resistance of the material of the pot, so as to convert electric energy into heat energy, thereby rapidly heating the pot.

[0051] Further, the coil disc 1 comprises a disc body 10, an electromagnetic coil 20 and a first magnetic member 30. The electromagnetic coil 20 is arranged on the disc body 10. The electromagnetic coil 20 comprises an outer coil 210 and an inner coil 220. The outer coil 210 and the inner coil 220 can be distributed in the radial direction of the disc body 10. The inner coil 220 can be located in the central region of the disc body 10, and the outer coil 210 can be located in the edge region of the disc body 10. In addition, the outer coil 210 is used for heating the circumferential wall of the pot, and the inner coil 220 is used for heating the bottom wall of the pot. The first magnetic member 30 is also arranged on the disc body 10. The first magnetic member 30 can be ferrite, nanocrystalline, amorphous alloy or the like. The first magnetic member 30 can be located between the outer coil 210 and the inner coil 220. Alternatively, part of the structure of the first magnetic member 30 can be located between the outer coil 210 and the inner coil 220. The first magnetic member 30 can be used to guide the magnetic induction lines of the outer coil 210 to radiate to the circumferential wall of the pot.

[0052] It should be understood that the magnetic permeability of the first magnetic member 30 is much higher than that of air. Therefore, the first magnetic member 30 can attract and concentrate the magnetic induction lines to pass through itself to form a low magnetic resistance path. The magnetic induction lines generated by the outer coil 210 will diffuse to the surrounding air or penetrate downward through the disc body 10, but the first magnetic member 30 can make most of the magnetic induction lines propagate along the predetermined path (toward the circumferential wall of the pot) by virtue of its high magnetic permeability advantage.

[0053] It can be understood that, through the design of the outer coil 210 and the inner coil 220 being arranged radially apart from each other along the disc body 10, the outer coil 210 and the inner coil 220 of the coil disc 1 can form directional heating areas for the circumferential wall and the bottom wall of the pot respectively, so as to achieve the effect of uniform heating of the pot. Moreover, through the split layout of the inner coil 220 and the outer coil 210 and the directional regulation of the magnetic field by the first magnetic member 30, the magnetic field of the outer coil 210 can act on the circumferential wall area of the pot, avoiding the dependence on the physical structure to fit the curvature of the pot wall to heat the circumferential wall of the pot. Even if the coil disc is not arranged outside the circumferential wall of the pot, the magnetic induction lines of the outer coil can still be guided to the position of the circumferential wall of the pot by the first magnetic member 30, so as to adapt to the shape difference of different pots and improve the compatibility of the coil disc for multiple pots while ensuring uniform heating of the pot.

[0054] In a possible implementation manner, referring to Figure 1 、 Figure 2 The disc body 10 includes a first surface 110 and a second surface 120. The first surface 110 and the second surface 120 can be arranged oppositely along the axial direction of the disc body 10. Specifically, the first surface 110 is arranged towards the pot. The second surface 120 is arranged away from the pot. The electromagnetic coil 20 is arranged on the first surface 110. The first mounting structure 111 is further arranged on the first surface 110. The first mounting structure 111 can protrude along the axial direction of the disc body 10. The outer coil 210 can be arranged radially outside the first mounting structure 111, and the inner coil 220 can be arranged radially inside the first mounting structure 111. In order to avoid interference between the outer coil 210 and the inner coil 220, the first magnetic member 30 can be fixedly arranged in the first mounting structure 111. Alternatively, at least part of the structure of the first magnetic member 30 can be fixed in the first mounting structure 111. Optionally, the first mounting structure 111 can be a ring-shaped rib structure, a stepped ring-shaped boss structure or the like which protrudes along the axial direction of the disc body 10.

[0055] It can be understood that, through the design of the first mounting structure 111 of the first surface 110 of the disc body 10 protruding axially, the spatial layout of the electromagnetic coil 20 and the magnetic member and the magnetic field distribution are optimized. The first mounting structure 111 protruding axially allows the outer coil 210 and the inner coil 220 to be positioned outside and inside respectively, and part of the first magnetic member 30 is arranged in the first mounting structure 111, so as to separate the magnetic fields of the outer coil 210 and the inner coil 220, avoid the cross interference of the magnetic fields of the outer coil 210 and the inner coil 220, and thus allow the magnetic field generated by the outer coil 210 to directly act on the pot wall, so as to improve the heating efficiency of the pot wall.

[0056] In a possible implementation manner, referring to Figure 1 、 Figure 2 、 Figure 3The first installation structure 111 has a first through hole 1111. The first through hole 1111 can penetrate the first installation structure 111 along the axial direction of the disc body 10. The first through hole 1111 can be used for mounting and fixing the first magnetic member 30. Specifically, the first magnetic member 30 includes a first magnetic segment 31. The first magnetic segment 31 can extend along the axial direction of the disc body 10, and the first magnetic segment 31 can be penetrated in the first through hole 1111.

[0057] It can be understood that the present application realizes the regulation and optimization of the magnetic field path through the penetration and cooperation of the first through hole 1111 axially penetrating in the first installation structure 111 and the first magnetic segment 31. The first magnetic segment 31 extends axially and penetrates the first through hole 1111, and the longitudinal magnetic circuit design can avoid the magnetic field cross interference between the outer coil 210 and the inner coil 220, and reduce the disorder diffusion of the magnetic induction lines in the disc body 10. Moreover, the structure of the first through hole 1111 can provide a fixed channel for the first magnetic segment 31, ensuring its stability during the magnetic field guiding process.

[0058] In a possible implementation manner, referring to Figure 1 , Figure 2 , Figure 3 The first magnetic member 30 can be multiple. Specifically, the multiple first magnetic members 30 can be distributed in a circumferential interval along the disc body 10. Further, the first installation structure 111 can also be multiple. Moreover, the first installation structure 111 can correspond to the first magnetic member 30 one by one. The number and interval of the first magnetic member 30 and the first installation structure 111 can be determined according to actual needs, and the present application does not make any limitation.

[0059] It can be understood that the present application realizes the segmented guiding of the magnetic field through the circumferential interval design of the multiple one-to-one corresponding first magnetic members 30 and the first installation structures 111. The multiple first magnetic members 30 are uniformly arranged along the circumferential direction of the disc body 10, and each first magnetic member 30 is fixed by an independent protruding first installation structure 111 to form a magnetic pole array surrounding the circumferential wall of the pot, so that the magnetic field of the outer coil 210 can be segmented and directionally regulated. Each first magnetic member 30 can guide the magnetic induction lines of the outer coil 210 to radiate to the pot wall area at the position of the corresponding first installation structure 111, avoid the local heating blind area caused by the uneven circumferential magnetic field distribution, and also can enhance the uniformity of the pot wall heating.

[0060] In a possible implementation manner, referring to Figure 1 , Figure 2 , Figure 3In order to avoid the magnetic field generated by the outer coil 210 and the inner coil 220 interfering with each other, the height of the first magnetic section 31 should be greater than or equal to the height of the outer coil 210 in the axial direction of the disc body 10. Alternatively, the height of the first magnetic section 31 should be greater than or equal to the height of the inner coil 220 in the axial direction of the disc body 10. Alternatively, the height of the first magnetic section 31 should be greater than or equal to the height of the outer coil 210 and the inner coil 220 in the axial direction of the disc body 10.

[0061] It can be understood that, by limiting the axial height of the first magnetic section 31, the present application can sufficiently capture and direct the magnetic field lines generated by the outer coil 210, avoiding the magnetic field from escaping or being directed to a blind area due to insufficient height of the first magnetic section 31. At the same time, the height design can form a continuous magnetic circuit barrier for the first magnetic section 31 in the transition area between the peripheral wall and the bottom wall of the pot, which not only enhances the vertical radiation intensity of the magnetic field of the outer coil 210 to the peripheral wall, but also effectively isolates the magnetic field interference between the inner coil 220 and the outer coil 210, ensuring efficient focusing and heating of the inner coil 220 to the bottom of the pot.

[0062] In one possible implementation manner, referring to Figure 2 、 Figure 3 The first magnetic piece 30 further comprises a second magnetic section 32. The second magnetic section 32 can be located on the lower side of the first magnetic section 31. The second magnetic section 32 comprises a first end and a second end. The first end of the second magnetic section 32 can be connected with the first magnetic section 31. The second end of the second magnetic section 32 can extend outward in the radial direction of the disc body 10, so that the second magnetic section 32 is opposite to the outer coil 210. That is, the second magnetic section 32 can be located below the outer coil 210. Optionally, the length of the second magnetic section 32 can be greater than or equal to the width of the outer coil 210.

[0063] It can be understood that, by designing the second magnetic section 32 to extend outward in the radial direction of the disc body 10 from the end of the first magnetic section 31, the present application can form a magnetic shielding barrier covering the lower part of the outer coil 210, and thus the magnetic field path can be constrained to the direction of the peripheral wall of the pot. Through the above design, the second magnetic section 32 can effectively reduce the invalid radiation of the magnetic field of the outer coil 210 between the bottom of the pot and the coil disc 1, and reduce the energy loss caused by the downward penetration of the magnetic field.

[0064] In one possible implementation manner, referring to Figure 2 、 Figure 3The first magnetic piece 30 further comprises a third magnetic segment 33. The third magnetic segment 33 can be connected with the second end of the second magnetic segment 32. In addition, the third magnetic segment 33 is arranged in parallel with the first magnetic segment 31. In this way, the first magnetic segment 31, the second magnetic segment 32 and the third magnetic segment 33 of the first magnetic piece 30 can form a U-shaped structure. In addition, the first surface 110 of the disc body 10 is further provided with a second mounting structure 112. The second mounting structure 112 also protrudes along the axial direction of the disc body 10. In addition, the second mounting structure 112 also defines a second through hole 1121 penetrating along the axial direction of the disc body 10. The third magnetic segment 33 can be arranged in the second through hole 1121.

[0065] It can be understood that, by the combined design of the third magnetic segment 33 and the second mounting structure 112, a synergistic mechanism of a closed magnetic circuit and multi-stage magnetic guide can be constructed. The third magnetic segment 33 is arranged in parallel with the first magnetic segment 31 and connected through the end of the second magnetic segment 32, so as to form a U-shaped closed magnetic circuit, which simultaneously wraps the area of the outer coil 210 in the radial direction and the axial direction, so as to not only reduce the magnetic resistance and improve the magnetic energy transmission efficiency through the closed loop, but also realize the bidirectional guidance of the magnetic induction lines of the outer coil 210 through the parallel distribution of the third magnetic segment 33 and the first magnetic segment 31, so as to enhance the all-around coverage of the outer coil 210 to the circumferential wall of the pot.

[0066] In a possible implementation manner, referring to Figure 2 , Figure 4 The outer coil 210 comprises a plurality of first coil layers 211 formed by winding. Specifically, the plurality of first coil layers 211 can be stacked in sequence along the axial direction of the disc body 10. In addition, each first coil layer 211 can be independently wound into an annular shape. The horizontal projections of the plurality of first coil layers 211 can coincide. In addition, insulating partitions or magnetic piece supports can be arranged between the plurality of first coil layers 211.

[0067] It can be understood that, by the plurality of first coil layers 211 arranged in the axial direction, multi-layer magnetic field superposition can be formed. The magnetic induction lines independently generated by each first coil layer 211 can be enhanced layer by layer in the vertical direction, and jointly act on different height regions of the circumferential wall of the pot. The plurality of first coil layers 211 arranged in the axial direction can not only improve the heating intensity of the circumferential wall of the pot through longitudinal accumulation of the magnetic field, but also avoid the dispersion of the magnetic field caused by the horizontal misalignment of the first coil layers 211.

[0068] In a possible implementation manner, referring to Figure 2 , Figure 4The number of the first circle layers 211 is 3. Alternatively, the number of the first circle layers 211 is greater than 3. In this way, the winding of more than three layers can ensure the magnetic field strength generated by the outer coil 210, and in turn can ensure that the magnetic field generated by the outer coil 210 can generate sufficient heat on the wall of the pot. For example, the number of the first circle layers 211 can be 4, 5, 6, etc. The number of the first circle layers 211 can be determined according to actual needs, and the present application does not make specific limitations. Moreover, the inner coil 220 can include a plurality of second circle layers 221 formed by winding. The plurality of second circle layers 221 can also be stacked along the axial direction of the disc body 10. It should be noted here that the number of the first circle layers 211 should be greater than the number of the second circle layers 221. For example, when the number of the first circle layers 211 is 3, the number of the second circle layers 221 can be 2 or 1. When the number of the first circle layers 211 is 4, the number of the second circle layers 221 can be 3, 2, or 1.

[0069] It can be understood that, since the number of the second circle layers 221 of the inner coil 220 is less than the number of the first circle layers 211 of the outer coil 210, the magnetic field of the inner coil 220 can be concentrated to cover the core area of the bottom of the pot, and the dispersion of the magnetic field acting on the bottom wall and the attenuation of the heat efficiency caused by too many layers can be avoided.

[0070] In one possible implementation manner, with reference to Figure 1 , Figure 2 , Figure 3 The first surface 110 is further provided with a plurality of first partition ribs 113. The plurality of first partition ribs 113 can be distributed at intervals along the radial direction of the disc body 10. A first wire slot 114 can be defined between any two adjacent first partition ribs 113. The outer coil 210 can be wound in the first wire slot 114. Alternatively, the first surface 110 is further provided with a plurality of second partition ribs 115. The plurality of second partition ribs 115 can be distributed at intervals along the radial direction of the disc body 10. A second wire slot 116 can be defined between any two adjacent second partition ribs 115. The inner coil 220 can be wound in the second wire slot 116. Alternatively, the first surface 110 is simultaneously provided with the plurality of first partition ribs 113 and the plurality of second partition ribs 115. A first wire slot 114 can be defined between any two adjacent first partition ribs 113. The outer coil 210 can be wound in the first wire slot 114. A second wire slot 116 can be defined between any two adjacent second partition ribs 115. The inner coil 220 can be wound in the second wire slot 116. Optionally, the cross section of the first partition rib 113 and the second partition rib 115 can be wavy to increase the contact area with the coil wire and reduce the risk of loose winding. At the same time, the wavy structure can form a micro heat dissipation air duct to improve the heat dissipation efficiency of the coil.

[0071] It can be understood that by arranging the first wire slot 114 and the second wire slot 116, the inner coil 220 and the outer coil 210 can be constrained by the slot wall, ensuring the consistency of the wire spacing of the inner coil 220 and the outer coil 210, and avoiding the magnetic field deviation or local uneven strength caused by free winding.

[0072] In a possible implementation manner, referring to Figure 1 、 Figure 2 、 Figure 3 The inner coil 220 can include two coil groups. Specifically, the inner coil 220 can include a first coil group 222 and a second coil group 223. The first coil group 222 and the second coil group 223 can be arranged in an inner-outer interval. Alternatively, the inner coil 220 can include three or more coil groups. The plurality of coil groups can be arranged in an interval along the radial direction of the disc body 10.

[0073] It can be understood that, by arranging the first coil group 222 and the second coil group 223 in an inner-outer interval, the application can form independent heating units for the core area and the transition area of the pot bottom. The first coil group 222 and the second coil group 223 can be respectively located on the inner side and the outer side of the inner coil 220, wherein the first coil group 222 on the inner side can cover the central area of the pot bottom to improve the local heating strength, and the second coil group 223 on the outer side can extend to the joint area of the pot bottom and the peripheral wall to eliminate the heating blind area of the joint area and improve the uniformity of heating.

[0074] In a possible implementation manner, referring to Figure 1 、 Figure 2 、 Figure 3 The coil disc 1 further includes a second magnetic member 40. The second magnetic member 40 can be similar in structure to the first magnetic member 30. The second magnetic member 40 can be arranged at the bottom of the inner coil 220. Alternatively, part of the structure of the second magnetic member 40 can be arranged at the bottom of the inner coil 220 to guide the magnetic induction lines of the inner coil 220, so that the magnetic induction lines of the inner coil 220 radiate to the bottom wall of the pot.

[0075] It can be understood that, by arranging at least part of the structure of the second magnetic member 40 at the bottom of the inner coil 220, the application can form a magnetic shielding barrier covering the bottom of the inner coil 220, and further constrain the magnetic field path, so that the magnetic induction lines are vertically gathered to the bottom wall of the pot, thereby improving the heating efficiency of the bottom wall of the pot.

[0076] In a possible implementation manner, referring to Figure 4The inner diameter of the outer coil 210 can be represented as D1. The outer diameter of the outer coil 210 can be represented as D2. Further, D1 can be greater than or equal to 170 mm. For example, D1 can be 170 mm, 172 mm, 174 mm, 176 mm, 178 mm, 180 mm, etc. D2 can be greater than or equal to 200 mm. For example, D2 can be 202 mm, 204 mm, 206 mm, 208 mm, 210 mm, 212 mm, etc. The specific values of D1, D2 and the combination manner can be determined according to actual needs, which are not limited by the present application. In the specific implementation process, when the center of the pot coincides with the center of the coil disc 1, the outer edge of the outer coil 210 should be within the projection range of the pot wall in the horizontal plane. In combination with the existing pot size, D2 should be greater than or equal to 200 mm to realize the heating function of the outer coil 210 on the pot wall.

[0077] It can be understood that by limiting the size of the inner diameter and the outer diameter of the outer coil 210, it can be ensured that the magnetic field generated by the outer coil 210 acts on the circumferential wall of the pot and avoids the core heating area of the bottom wall of the pot, avoids ineffective dissipation of the magnetic field, and realizes directional heating of the circumferential wall of the pot.

[0078] Further, referring to Figure 3 Since the magnetic fields of the inner coil 220 and the outer coil 210 partially overlap in the pot bottom area, it is necessary to adjust the distance between the inner coil 220 and the outer coil 210 to control the degree of superposition of the magnetic fields of the two, so as to avoid excessive overlap of the inner magnetic field and the outer magnetic field, resulting in excessive magnetic field at the edge of the pot bottom and weakened magnetic field in the center area, forming the phenomenon of uneven heating of the edge overheating and the center being cold. The distance between the inner coil 220 and the outer coil 210 can be represented as d1. d1 can be greater than or equal to 5 mm. For example, d1 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.

[0079] Further, referring to Figure 1 In order to avoid excessive concentration of magnetic lines in the center area of the pot bottom, it is necessary to control the position of the first magnetic member 30. Specifically, the distance between the first magnetic segment 31 of the first magnetic member 30 and the inner coil 220 is represented as d2. The distance between the first magnetic segment 31 of the first magnetic member 30 and the outer coil 210 is represented as d3. The position of the first magnetic member 30 should satisfy d2=d3.

[0080] In one possible implementation, the number of strands of the outer coil 210 can be represented as a. The number of strands of the inner coil 220 can be represented as b. The number of strands of the outer coil 210 and the number of strands of the inner coil 220 can satisfy the following relationship: 0.2 ≤ a / b ≤ 1.5. Wherein, a / b can be 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, etc. The specific values of a and b can be determined according to actual needs, and the present application does not make any limitation.

[0081] It can be understood that, by setting the strand ratio of the outer coil 210 and the inner coil 220, the present application can balance the magnetic field energy distribution of the pot wall and the pot bottom, avoid the outer coil 210 strand being too low, which leads to the decrease of the pot wall heating intensity, and also avoid the outer coil 210 strand being too high, which leads to the insufficient heat production of the pot bottom and the imbalance of the fire distribution.

[0082] In the second aspect, the present application provides a stove, which comprises the above-mentioned coil disc 1. Wherein, the stove can be a household table type electromagnetic stove, a commercial embedded stove, a portable outdoor electromagnetic stove, a multifunctional cooker all-in-one machine, etc. The stove of the present application can be used for heating various pots such as arc-shaped frying pans, flat-bottom frying pans, flat-bottom soup pots, etc.

[0083] It can be understood that, by adopting the above-mentioned coil disc 1, the stove of the present application can optimize the heating efficiency of the pot wall and the bottom wall, improve the problem of burnt bottom and uneven heating caused by the single heating area of the traditional electromagnetic stove, and thus can increase the user's experience in the cooking process and improve the taste of dishes. Moreover, by adopting the split layout of the inner coil 220 and the outer coil 210 and the directional regulation of the magnetic field by the first magnetic member 30, the stove can adapt to pots with different arc degrees, such as arc-shaped frying pans, flat-bottom frying pans, flat-bottom soup pots, etc., so as to improve the compatibility of the stove to different pots.

[0084] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0085] It should be noted that the "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like in the specification represent embodiments that can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments that are explicitly or implicitly described.

[0086] In general, terminology can be understood at least in part from an ordinary sense of the corresponding terminology as would be understood by those of ordinary skill in the art to which the subject matter concerns when context permits. That is, a term should be interpreted as having a frequency based meaning whenever and wherever that meaning can reasonably be made.

[0087] It will be readily understood that the terms "on", "above", and "over", in the present disclosure, should be interpreted in the broadest context to mean not only "directly on something", but also to include the meaning of "on something" with intermediate features or layers therebetween, and that "above" or "over" not only includes the meaning of "above" or "over something", but also can include the meaning of "above" or "over something" without intermediate features or layers therebetween (i.e., directly on something).

[0088] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some or all of the technical features thereof; and such modifications or replacements do not cause the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A coil panel for heating a cooking vessel, characterized in that, The coil disc comprises: a disc body; electromagnetic coils comprising outer coils and inner coils distributed along the radial direction of the disc body, the outer coils being used for heating the circumferential wall of the pot, and the inner coils being used for heating the bottom wall of the pot; a first magnetic member provided on the disc body, at least part of the structure of the first magnetic member being located between the outer coils and the inner coils, and the first magnetic member being used for guiding the magnetic induction lines of the outer coils to radiate towards the circumferential wall of the pot.

2. The coil former of claim 1, wherein, The disc body comprises a first surface facing the pot along the axial direction of the disc body and a second surface facing away from the pot, the electromagnetic coils are provided on the first surface, and the first surface is provided with a first mounting structure protruding along the axial direction of the disc body, the outer coils are provided on the outer side of the first mounting structure, the inner coils are provided on the inner side of the first mounting structure, and at least part of the structure of the first magnetic member is fixed to the first mounting structure.

3. The coil former of claim 2, wherein, The first mounting structure defines a first through hole penetrating along the axial direction of the disc body, the first magnetic member comprises a first magnetic segment extending along the axial direction of the disc body and penetrating the first through hole.

4. The coil former of claim 3, wherein, There are a plurality of first magnetic members, and the first magnetic members are distributed along the circumferential direction of the disc body, and the first mounting structure is a plurality of first mounting structures corresponding to the first magnetic members.

5. The coil former of claim 4, wherein, Along the axial direction of the disc body, the height of the first magnetic segment is not less than the height of any one of the outer coils and the inner coils.

6. The coil former of claim 3, wherein, The first magnetic member further comprises a second magnetic segment, a first end of the second magnetic segment is connected with the first magnetic segment, and a second end of the second magnetic segment extends outward along the radial direction of the disc body, so that the second magnetic segment is opposite to the outer coils.

7. The coil former of claim 6, wherein, The first magnetic member further comprises a third magnetic segment, the third magnetic segment is parallel to the first magnetic segment, and the third magnetic segment is connected with the second end of the second magnetic segment; The first surface is further provided with a second mounting structure protruding along the axial direction of the disc body, the second mounting structure defines a second through hole penetrating along the axial direction of the disc body, and the third magnetic segment penetrates the second through hole.

8. The coil former of any one of claims 1-7, wherein, The outer coils comprise a plurality of first coil layers formed by winding, and the first coil layers are arranged along the axial direction of the disc body.

9. The coil former of claim 8, wherein, The number of the first coil layers is greater than or equal to 3; and / or, The inner coils comprise a plurality of second coil layers formed by winding, the second coil layers are arranged along the axial direction of the disc body, and the number of the first coil layers is greater than the number of the second coil layers.

10. The coil former of any of claims 2-7, wherein, The first surface is further provided with first partition ribs distributed along the radial direction of the disc body, a first wire slot is defined between adjacent two first partition ribs, and the outer coils are wound in the first wire slot; and / or, The first surface is further provided with a plurality of second partition ribs distributed along the radial direction of the disc body, a second wire slot is defined between adjacent two second partition ribs, and the inner coils are wound in the second wire slot.

11. The coil former of any one of claims 1-7, wherein, The inner coils at least comprise a first coil group and a second coil group, and the first coil group and the second coil group are distributed along the radial direction.

12. The coil former of any one of claims 1-7, wherein, Further comprising: A second magnetic member, at least a part of a structure of the second magnetic member is arranged at a bottom of the inner coil, and the second magnetic member is used for guiding magnetic induction lines of the inner coil to radiate to a bottom wall of the pot.

13. The coil former of any one of claims 1-7, wherein, The inner diameter of the outer coil is greater than or equal to 170 mm, and the outer diameter of the outer coil is greater than or equal to 200 mm.

14. The coil former of any one of claims 1-7, wherein, The ratio of the number of strands a of the outer coil to the number of strands b of the inner coil is 0.2≤a / b≤1.

5.

15. A stove, characterised in that Comprising: The coil panel according to any one of claims 1-14.

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