Coil panel and hob

Abstract

The application provides a coil disc and a stove, and relates to the technical field of household appliances. The coil disc comprises a disc body, an electromagnetic coil arranged on the disc body, the electromagnetic coil comprising a first coil and a second coil, a magnetic induction element arranged on the disc body, the magnetic induction element being located on the side of the first coil facing a pot and on the radially inner side of at least part of the structure of the second coil, the magnetic induction element being adapted to generate heat under the action of the magnetic induction lines of the first coil and the second coil to heat the pot, and a heat insulation assembly for fixing the magnetic induction element and blocking the heat conduction between the magnetic induction element and the electromagnetic coil. The coil disc and the stove provided by the application realize the heating of the pot made of a magnetic conductive material and the pot made of other materials, improve the versatility of the electromagnetic stove, and reduce the heat transfer from the magnetic induction element to the electromagnetic coil through the design of the heat insulation structure, thereby prolonging the service life of the stove.

Description

[0001] This application claims priority to Chinese Patent Application No. 202520652279.5, filed on April 8, 2025, entitled "Coil Coil and Stove", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of household appliance technology, and more particularly to a coil and a stove. Background Technology

[0003] An induction cooker is a common cooking appliance with advantages such as high heating efficiency, fast heating speed, and safe use of electric heating.

[0004] Conventional induction cookers utilize the principle of electromagnetic induction eddy current heating. An alternating magnetic field is generated through a coil. When a pot made of magnetic material is placed on the cooktop, the alternating magnetic field cuts through the pot, thereby generating an alternating current (i.e., eddy current) at the bottom of the pot, causing the pot to heat up and thus heating the food.

[0005] However, conventional induction cookers can only heat cookware made of magnetic materials; they cannot heat cookware made of other materials, such as ceramic pots and earthenware pots. Utility Model Content

[0006] In view of the above problems, this application provides a coil and a stove that enables heating of cookware made of magnetic materials and other materials, improves the versatility of the induction cooker, and reduces heat transfer from the magnetic induction element to the electromagnetic coil by designing a heat insulation structure, thus extending the service life of the stove.

[0007] This application provides a coil for heating a cookware, the coil comprising: a coil body; an electromagnetic coil disposed on the coil body, the electromagnetic coil including a first coil and a second coil; a magnetic sensing element disposed on the coil body, the magnetic sensing element being located on the side of the first coil facing the cookware and radially inward of at least a portion of the structure of the second coil, the magnetic sensing element being adapted to generate heat under the action of the magnetic field lines of the first coil and the second coil to heat the cookware; and a heat insulation component for fixing the magnetic sensing element and blocking heat conduction between the magnetic sensing element and the electromagnetic coil.

[0008] The coil provided in this application allows for heating of various cookware materials. When a non-magnetic cookware is placed above the coil, the magnetic induction element generates a large amount of heat under the electromagnetic influence of the first and second coils. This heat is then dissipated through thermal radiation or conduction, achieving a pan-compatible heating performance. When a magnetic cookware is placed above the coil, the second coil directly acts on the cookware, leveraging the rapid heating speed of electromagnetic induction heating to quickly raise the cookware's temperature. Furthermore, the magnetic induction element also generates a large amount of heat under the influence of the first and second coils, heating the cookware through thermal radiation or conduction, ensuring even heating and stable cookware temperature. Additionally, the magnetic induction element heats the entire surface, resulting in more uniform heating compared to traditional ceramic heating wires. Moreover, the design of the second coil adds an edge magnetic field to the magnetic induction element on top of the first coil, further enhancing its heating uniformity and increasing its heating power.

[0009] Furthermore, the inclusion of heat insulation components effectively isolates the high temperatures generated by the magnetic induction element during heating, reducing heat transfer from the magnetic induction element to the electromagnetic coil. This protects the electromagnetic coil, improves its durability, and extends the lifespan of both the coil and the cookware. Additionally, the heat insulation component's design, which blocks heat between the magnetic induction element and the electromagnetic coil, helps reduce heat diffusion and loss, allowing heat to be more concentrated on the cookware for rapid heating. Moreover, the heat insulation component provides stable support for the magnetic induction element, improving the installation stability of the coil.

[0010] In one possible implementation, the heat insulation component includes: a heat insulation pad disposed on the pan body, a first coil located on the side of the heat insulation pad facing away from the cookware, a second coil located on the radially outer side of the pan body, and a magnetic sensing element disposed on the side of the heat insulation pad facing away from the first coil.

[0011] The heat insulation pad is designed to effectively isolate heat and guide the heat generated on the magnetic induction element to be transferred upwards, i.e., towards the cookware, thereby increasing heating power, reducing heat conduction and loss, and allowing the cookware to reach the required temperature more quickly. In addition, the heat insulation pad also reduces the high temperature effects that the pan and electromagnetic coil may be subjected to, extending the service life of the coil.

[0012] In one possible implementation, the heat insulation pad includes: a pad body; a first boss disposed on the side of the pad body opposite to the first coil, the first boss being an annular shape extending circumferentially along the pad body, and the magnetic sensing element being disposed radially inside the first boss.

[0013] The pad body is the main component of the heat insulation pad, providing basic heat insulation and support functions. The design of the first boss provides additional heat insulation and support, enhancing the heat insulation effect of the pad and limiting the positioning of the magnetic sensing element, thus improving its installation stability on the heat insulation pad. Furthermore, by placing the magnetic sensing element radially inside the first boss, the heat transfer path is controlled, helping to reduce lateral heat diffusion and loss, allowing heat to be more concentrated on the cookware, improving heating efficiency and stability.

[0014] In one possible implementation, the height of the first boss is higher than the height of the magnetic sensing element.

[0015] This design creates a space between the first protrusion and the magnetic sensing element in the height direction. This space helps to concentrate heat onto the cookware, reducing lateral heat diffusion and loss, and improving heating power and stability. Furthermore, the higher first protrusion provides stable support for the magnetic sensing element, enhancing the structural stability of the heat insulation pad and the entire coil.

[0016] In one possible implementation, the heat insulation component further includes: a first heat insulation ring disposed on the first boss, the first heat insulation ring being located on the side of the magnetic sensing element facing away from the first coil, the projection of the first heat insulation ring in the reference plane at least partially coinciding with the projection of the magnetic sensing element in the reference plane, the reference plane being perpendicular to the axis of the disk body.

[0017] The first heat insulation ring can face the heat generated by the magnetic sensing element during the heating process, and provides additional heat insulation near the outer periphery of the magnetic sensing element. By setting the first heat insulation ring on the first protrusion and making it at least partially coincide with the projection of the magnetic sensing element in the reference plane, the heat insulation effect of the heat insulation component is improved, which helps to further reduce the ineffective transfer of heat and improve heating efficiency and stability.

[0018] In one possible implementation, the width of the area where the projection of the first heat insulation ring in the reference plane and the projection of the magnetic sensing element in the reference plane overlap along the radial direction of the disk body is 0.5mm-5mm.

[0019] By controlling the width of the overlapping area within the aforementioned range, it can be ensured that the first heat insulation ring covers the edge of the magnetic sensing element, thereby reducing the conduction of heat from the magnetic sensing element to the second coil or other non-target areas. This helps to improve heating efficiency and stability. The design allows heat to be applied more concentratedly to the cookware, reducing lateral heat diffusion and loss.

[0020] In one possible implementation, the first heat insulation ring and the magnetic sensing element are arranged axially spaced along the disk body.

[0021] There is a certain gap between the first heat insulation ring and the magnetic sensing element along the axial direction of the coil body. This prevents direct contact between the two, further reducing direct heat conduction from the magnetic sensing element to the first heat insulation ring. This helps to concentrate heat on the cookware, reducing lateral heat diffusion and loss, and improving heating efficiency and stability. Furthermore, the axial gap provides a degree of freedom for both the magnetic sensing element and the first heat insulation ring, helping to prevent the magnetic sensing element from being squeezed or deformed due to thermal expansion, thus helping to maintain the overall performance and stability of the coil.

[0022] In one possible implementation, the first heat insulation ring is located at the end of the first boss away from the first coil, and the radial inner edge of the first heat insulation ring is located inside the first boss.

[0023] This layout ensures that the first heat insulation ring can cover the edge of the magnetic induction element, allowing heat to be applied more concentratedly to the cookware, reducing lateral heat diffusion and loss, and helping to improve heating efficiency and uniformity.

[0024] In one possible implementation, the first boss is provided along the edge of the pad body, and the side surface of the pad body facing away from the first coil is also provided with a second boss, the second boss being located inside the first boss, and the magnetic sensing element is provided with a through hole corresponding to the second boss, the second boss passing through the through hole.

[0025] By setting a first boss and a second boss on the pad body, and allowing the second boss to pass through the through hole of the magnetic sensing element, the limiting and fixing effect of the magnetic sensing element is enhanced, improving the installation stability of the magnetic sensing element and the structural stability of the heat insulation pad. Furthermore, the through hole design allows the second boss to easily pass through the magnetic sensing element, simplifying the coil assembly process and helping to improve assembly efficiency.

[0026] In one possible implementation, the heat insulation component further includes: a second heat insulation ring disposed at the end of the second protrusion away from the first coil, wherein the projection of the second heat insulation ring in the reference plane at least partially coincides with the projection of the magnetic sensing element in the reference plane, and the reference plane is perpendicular to the axis of the disk body.

[0027] Thus, the second heat insulation ring further enhances the limiting effect on the magnetic sensing element, preventing possible displacement and thereby improving the overall structural stability of the coil. Furthermore, this design helps reduce localized heat accumulation and overheating, improving heating uniformity.

[0028] In one possible implementation, the coil coil further includes a heat insulation frame comprising a first region and a second region, the first region being located on the side of the heat insulation pad facing the first coil, and the second region surrounding the periphery of the heat insulation pad.

[0029] The heat insulation frame design further enhances the heat insulation effect of the coil, effectively blocking heat conduction and leakage, and improving heating efficiency. In addition, the heat insulation frame provides extra support for the heat insulation pad, enhancing the overall structural stability.

[0030] In one possible implementation, the thickness of the heat insulation frame is 0.5mm-5mm; and / or, the heat insulation frame includes at least one of mica components and plastic components.

[0031] In one possible implementation, the thickness of the heat insulation pad is greater than or equal to 2 mm and less than or equal to 15 mm.

[0032] In one possible implementation, the plate body is formed with a mounting groove along its own axial direction and facing the opening of the cookware, the first coil, the heat insulation component and the magnetic sensing element are all disposed in the mounting groove, and the second coil is located outside the mounting groove.

[0033] The mounting slot allows the first coil, heat insulation component, and magnetic sensing element to be arranged inside the pan, improving space utilization. Furthermore, the placement of the second coil outside the mounting slot applies a magnetic field to the edge of the magnetic sensing element. This, combined with the heating effect of the first coil, results in more uniform and efficient heating of the magnetic sensing element. Additionally, the opening of the mounting slot faces the cookware, facilitating direct heat transfer from the magnetic sensing element to the cookware and reducing heat loss. Therefore, the mounting slot design optimizes the layout of the electromagnetic coil, heat insulation component, and magnetic sensing element, improving space utilization and heating power, and enhancing the adaptability and compatibility of the coil pan.

[0034] In one possible implementation, the disk body includes: a first mounting portion and a second mounting portion, the second mounting portion surrounding the periphery of the first mounting portion, and the second mounting portion being higher than the first mounting portion, such that the first mounting portion and the second mounting portion together define the mounting groove.

[0035] The first coil is disposed in the first mounting part, and the second coil is disposed in the second mounting part.

[0036] The design of the second mounting section being higher than the first mounting section forms a mounting groove and defines the height difference between the first and second coils. This height difference helps to better utilize space, making the coil disk structure more compact. Furthermore, this height difference design also helps improve heat dissipation by increasing the contact area with air, thus aiding in heat dissipation. In addition, the design of the first and second mounting sections enhances the overall structural stability of the coil disk, enabling it to withstand greater loads and more complex working environments.

[0037] In one possible implementation, the coil disk further includes: a first magnetic element disposed on the first mounting portion, at least a portion of the structure of the first magnetic element being located on the side of the first coil opposite to the magnetic sensing element; and / or,

[0038] The second magnetic element is disposed on the second mounting portion, and at least a portion of the structure of the second magnetic element is disposed on the side of the second coil opposite to the magnetic sensing element.

[0039] The design of the first and second magnetic components enhances the magnetic field strength inside the coil, increasing eddy current generation and thus improving heating efficiency and thermal power. Furthermore, by rationally designing the position and shape of the magnetic components, the direction of the magnetic field can be effectively guided, reducing the downward radiation of the magnetic field from the coil, which helps reduce electromagnetic interference and improve electromagnetic compatibility. In addition, the design of the first and second magnetic components also helps optimize the heat distribution inside the coil. By enhancing the magnetic field strength and guiding its direction, heat can be distributed more evenly, reducing localized overheating and improving heating uniformity and efficiency.

[0040] This application also provides a stove that includes a coil as described in any of the above possible implementations.

[0041] By incorporating the aforementioned coil into the stove, its versatility is enhanced, making it suitable for various cookware. This also improves the heating effect on metal cookware, increases heating power, and ensures the stove's heating stability. Furthermore, the heat insulation components in the coil protect the electromagnetic coil, improving its durability and extending the lifespan of both the coil and the stove. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1This is a schematic diagram of the coil disk structure according to an embodiment of this application;

[0044] Figure 2 This is an exploded view of the coil disk according to an embodiment of this application;

[0045] Figure 3 Cross-sectional view of a coil disk according to some embodiments of this application Figure 1 ;

[0046] Figure 4 Cross-sectional view of a coil disk according to some embodiments of this application Figure 2 ;

[0047] Figure 5 This is a cross-sectional view of a coil disk according to some embodiments of this application;

[0048] Figure 6 for Figure 5 The enlarged view of part A is shown in the center circle.

[0049] Explanation of reference numerals in the attached figures:

[0050] 10-coil disc;

[0051] 100 - Disk body; 100a - Mounting slot; 110 - First mounting part; 120 - Second mounting part;

[0052] 200 - Electromagnetic coil; 210 - First coil; 220 - Second coil;

[0053] 300 - Magnetic sensing element; 310 - Through hole;

[0054] 400 - Thermal insulation component; 410 - Thermal insulation pad; 411 - Pad body; 412 - First boss; 413 - Second boss; 420 - First thermal insulation ring; 430 - Second thermal insulation ring; 440 - Thermal insulation frame; 441 - First area; 442 - Second area;

[0055] 510 - First magnetic component; 520 - Second magnetic component. Detailed Implementation

[0056] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0057] An induction cooker is a common cooking appliance with advantages such as high heating efficiency, fast heating speed, and safe use of electric heating.

[0058] Conventional induction cookers utilize the principle of electromagnetic induction eddy current heating. An alternating magnetic field is generated through a coil. When a pot made of magnetic material is placed on the cooktop, the alternating magnetic field cuts through the pot, thereby generating an alternating current (i.e., eddy current) at the bottom of the pot, causing the pot to heat up and thus heating the food.

[0059] However, conventional induction cookers can only heat cookware made of magnetic materials; they cannot heat cookware made of other materials, such as ceramic pots and earthenware pots.

[0060] In view of this, this application provides a coil and a stove. When a non-magnetic cookware is placed above the coil, the magnetic induction element generates a large amount of heat under the electromagnetic action of the first and second coils. The magnetic induction element heats cookware of various materials through thermal radiation or thermal conduction, achieving compatibility with all types of cookware. When a magnetic cookware is placed above the coil, the second coil can directly act on the magnetic cookware, leveraging the rapid heating advantage of electromagnetic induction heating to quickly raise the temperature of the cookware. Furthermore, the magnetic induction element also generates a large amount of heat under the action of the first and second coils, heating the cookware through thermal radiation or thermal conduction, thus achieving uniform heating and stabilizing the cookware temperature. Additionally, the magnetic induction element heats the entire surface, resulting in more uniform heating compared to the heating wires in traditional ceramic cooktops. Moreover, by designing the second coil, an edge magnetic field is added to the magnetic induction element based on the first coil, further enhancing the uniform heating and increasing the heating power of the magnetic induction element.

[0061] Furthermore, the inclusion of heat insulation components effectively isolates the high temperatures generated by the magnetic induction element during heating, reducing heat transfer from the magnetic induction element to the electromagnetic coil. This protects the electromagnetic coil, improves its durability, and extends the lifespan of both the coil and the cookware. Additionally, the heat insulation component's design, which blocks heat between the magnetic induction element and the electromagnetic coil, helps reduce heat diffusion and loss, allowing heat to be more concentrated on the cookware for rapid heating. Moreover, the heat insulation component provides stable support for the magnetic induction element, improving the installation stability of the coil.

[0062] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0063] The following will combine Figures 1 to 6 The embodiments of this application will be described below.

[0064] Reference Figure 1 and Figure 2As shown in the illustration, an embodiment of this application provides a coil 10 for heating a cookware, which may be a metal cookware or a non-metal cookware. The coil 10 may include a plate body 100, an electromagnetic coil 200, a magnetic sensing element 300, and a heat insulation component 400.

[0065] The disk body 100 provides stable support and serves as the carrier for structures such as the electromagnetic coil 200, the magnetic sensing element 300, and the heat insulation component 400, ensuring overall stability and durability.

[0066] An electromagnetic coil 200 is disposed on the plate body 100. The electromagnetic coil 200 is a component that generates an electromagnetic field to heat the magnetic induction element 300 and the cookware. The electromagnetic coil 200 includes a first coil 210 and a second coil 220.

[0067] Optionally, the first coil 210 can be located on the side of the magnetic sensing element 300 away from the cookware. The magnetic field generated by the first coil 210 mainly acts on the magnetic sensing element 300, causing it to generate heat. Optionally, the second coil 220 can be located radially outside the magnetic sensing element 300. The magnetic field generated by the second coil 220 can directly act on the magnetic cookware to achieve electromagnetic induction heating, and can also enhance the magnetic sensing effect of the magnetic sensing element 300, further improving the heating power.

[0068] Thus, when energized, the first coil 210 and the second coil 220 will generate a magnetic field in the magnetizing element 300, thereby triggering eddy current heating.

[0069] The magnetic sensing element 300 is disposed on the plate body 100. The magnetic sensing element 300 is located on the side of the first coil 210 facing the cookware and is located radially inside at least a portion of the structure of the second coil 220. The magnetic sensing element 300 is adapted to generate heat under the action of the magnetic field lines of the first coil 210 and the second coil 220 to heat the cookware.

[0070] Understandably, the magnetic induction element 300 generates heat under the influence of the magnetic field lines of the first coil 210 and the second coil 220. This heat is transferred to the cookware through thermal radiation or thermal conduction, thus heating the cookware. The design of the magnetic induction element 300 improves heating power and the uniformity of heat conduction, ensuring even heating of the cookware and avoiding problems such as localized overheating or underheating. It also makes the coil 10 applicable to cookware of various materials, including metal and non-metal cookware, improving the versatility of the stove.

[0071] Optionally, the magnetic sensing element 300 may be made of a material with high magnetic permeability, such as ferrite or silicon steel sheet, so as to generate heat efficiently under the action of the magnetic field generated by the electromagnetic coil 200.

[0072] Specifically, when the electromagnetic coil 200 is energized, the first coil 210 and the second coil 220 generate an alternating magnetic field in the magnetic sensing element 300. Under the influence of the magnetic field, eddy currents are generated in the magnetic sensing element 300. These eddy currents flow inside the magnetic sensing element 300 and generate heat. As the heat accumulates, the magnetic sensing element 300 heats up and transfers the heat to the cookware through thermal conduction.

[0073] The design of the second coil 220 adds an edge magnetic field to the magnetic sensing element 300, which can be coupled with the first coil 210 to enhance the magnetic sensing effect of the magnetic sensing element 300, realize eddy current heating, and further improve the heating power of the magnetic sensing element 300.

[0074] When a metal cookware is placed on the cookware, and the second coil 220 is energized, eddy currents are generated on the side wall of the cookware under the influence of the magnetic field. This allows for direct electromagnetic heating through the side wall of the cookware, further increasing the heating power.

[0075] The heat insulation component 400 is used to fix the magnetic sensing element 300 and to prevent heat conduction between the magnetic sensing element 300 and the electromagnetic coil 200. It is understood that the heat insulation component 400 can be used to fix the magnetic sensing element 300, preventing it from shifting during heating or handling, and also to prevent heat conduction between the magnetic sensing element 300 and the electromagnetic coil 200. This design effectively protects the electromagnetic coil 200 and extends the service life of the stove.

[0076] As can be seen, when a non-magnetic cookware is placed above the coil disk 10 provided in this application, the magnetic induction element 300 will generate a large amount of heat under the electromagnetic action of the first coil 210 and the second coil 220. The magnetic induction element 300 will heat cookware of various materials by means of thermal radiation or thermal conduction, achieving performance that is not picky about cookware. When a magnetic cookware is placed above the coil disk 10, the second coil 220 can directly act on the magnetic cookware, taking advantage of the fast heating speed of electromagnetic induction heating, so that the cookware heats up quickly; in addition, the magnetic induction element 300 will also generate a large amount of heat under the action of the first coil 210 and the second coil 220, and heat the cookware by means of thermal radiation or thermal conduction, taking advantage of its uniform heating, so that the temperature of the cookware is stable.

[0077] In addition, the magnetic sensing element 300 heats the entire surface, which is more uniform than the heating wire in the traditional electric ceramic stove. Furthermore, by designing the second coil 220, an edge magnetic field is added to the magnetic sensing element 300 based on the first coil 210, making the magnetic sensing element 300 heat up more evenly and further improving the heating power of the magnetic sensing element 300.

[0078] Furthermore, the heat insulation component 400 effectively isolates the high temperature generated by the magnetic sensing element 300 during heating, reducing heat transfer from the magnetic sensing element 300 to the electromagnetic coil 200. This protects the electromagnetic coil 200, improves its durability, and extends the service life of the coil plate 10 and the cookware. Additionally, the heat insulation component 400's heat barrier design between the magnetic sensing element 300 and the electromagnetic coil 200 helps reduce heat diffusion and loss, allowing heat to be more concentrated on the cookware for rapid heating. Moreover, the heat insulation component 400 provides stable support for the magnetic sensing element 300, improving the installation stability of the coil plate 10.

[0079] In some embodiments, combined with Figures 2 to 4 The heat insulation component 400 includes a heat insulation pad 410, which is disposed on the plate body 100. A first coil 210 is located on the side of the heat insulation pad 410 facing away from the cookware, and a second coil 220 is located on the radial outer side of the plate body 100. A magnetic sensing element 300 is disposed on the side of the heat insulation pad 410 facing away from the first coil 210.

[0080] Optionally, the material of the heat insulation pad 410 may include ceramic fiber, aluminum silicate fiber, aerogel, etc., which have high thermal resistance, low density and good chemical stability.

[0081] Understandably, the heat insulation pad 410 can effectively isolate the high temperature generated by the magnetic sensing element 300 during the heating process, preventing heat from being directly transferred to the first coil 210 and the second coil 220, thereby protecting the electromagnetic coil 200 from high temperature damage and extending its service life.

[0082] The magnetic sensing element 300 is located on the side of the heat insulation pad 410 facing away from the first coil 210, that is, the magnetic sensing element 300 is placed directly on the heat insulation pad 410. This design ensures that the magnetic sensing element 300 can receive magnetic field lines from the first coil 210 and the second coil 220, and also provides additional support through the heat insulation pad 410 to prevent possible displacement of the magnetic sensing element 300.

[0083] As can be seen, the design of the heat insulation pad 410 effectively achieves heat isolation, guiding the heat generated on the magnetic sensing element 300 to be transferred upward, that is, towards the cookware, thereby increasing the heating power, reducing heat conduction and loss, and allowing the cookware to reach the required temperature more quickly. In addition, the heat insulation pad 410 also reduces the high temperature impact that the plate 100 and the electromagnetic coil 200 may be subjected to, extending the service life of the coil plate 10.

[0084] In some embodiments, combined with Figure 2 The heat insulation pad 410 includes a pad body 411 and a first protrusion 412. The pad body 411 is the main component of the heat insulation pad 410, and it realizes the basic functions of heat insulation and support.

[0085] The first protrusion 412 is located on the side of the pad body 411 facing away from the first coil 210. The first protrusion 412 is an annular shape extending circumferentially along the pad body 411, and the magnetic sensing element 300 is located radially inside the first protrusion 412. In this way, the magnetic sensing element 300 is enclosed inside the heat insulation pad 410, reducing the ineffective transfer of heat to the first coil 210 and the second coil 220.

[0086] As can be seen, the design of the first protrusion 412 provides additional heat insulation and support, enhancing the heat insulation effect of the heat insulation pad 410. It also limits the positioning of the magnetic sensing element 300, improving the installation stability of the magnetic sensing element 300 on the heat insulation pad 410. Furthermore, by placing the magnetic sensing element 300 radially inside the first protrusion 412, the heat transfer path is controlled, helping to reduce lateral heat diffusion and loss, allowing the heat to be more concentrated on the cookware, thus improving heating efficiency and stability.

[0087] In some embodiments, combined with Figures 3 to 5 The height of the first boss 412 is higher than the height of the magnetic sensing element 300.

[0088] In this way, a certain space is formed between the first protrusion 412 and the magnetic sensing element 300 in the height direction. The design of this space helps to guide heat to the cookware more concentratedly, reduce the lateral diffusion and loss of heat, and improve heating power and stability. In addition, the higher design of the first protrusion 412 also provides stable support for the magnetic sensing element 300, enhancing the structural stability of the heat insulation pad 410 and the entire coil 10.

[0089] In some embodiments, combined with Figures 3 to 5 The heat insulation component 400 also includes a first heat insulation ring 420, which is disposed on the first boss 412. The first heat insulation ring 420 is located on the side of the magnetic sensing element 300 facing away from the first coil 210. In this way, the first heat insulation ring 420 can face the heat generated by the magnetic sensing element 300 during the heating process, and plays an additional heat insulation role near the outer periphery of the magnetic sensing element 300.

[0090] Optionally, the material of the first thermal insulation ring 420 may include ceramic fiber, aluminum silicate fiber, aerogel, etc., which have high thermal resistance, low density and good chemical stability.

[0091] The projection of the first heat insulation ring 420 onto the reference plane at least partially coincides with the projection of the magnetizing element 300 onto the reference plane, which is perpendicular to the axis of the disk body 100. This design ensures that the first heat insulation ring 420 can enclose at least a portion of the magnetizing element 300, thereby reducing heat conduction from the magnetizing element 300 to the second coil 220 or other non-target areas.

[0092] It can be seen that by setting the first heat insulation ring 420 on the first protrusion 412 and making it at least partially coincide with the projection of the magnetic sensing element 300 in the reference plane, the heat insulation effect of the heat insulation component 400 is improved, which helps to further reduce the ineffective transfer of heat and improve heating efficiency and stability.

[0093] In some embodiments, combined with Figure 3 The width of the area where the projection of the first heat insulation ring 420 onto the reference plane coincides with the projection of the magnetic sensing element 300 onto the reference plane, along the radial direction of the disk body 100, is 0.5mm-5mm. Optionally, this width can be 0.5mm, 1mm, 1.5mm, 2.5mm, 3mm, 4mm, 5mm, etc. The specific width can be selectively designed according to actual needs and is not limited here.

[0094] Understandably, by controlling the width of the overlapping area within the aforementioned range, it can be ensured that the first heat insulation ring 420 covers the edge portion of the magnetic sensing element 300, thereby reducing the conduction of heat from the magnetic sensing element 300 to the second coil 220 or other non-target areas, which helps to improve heating efficiency and stability. The design allows heat to be applied more concentratedly to the cookware, reducing lateral heat diffusion and loss.

[0095] In some embodiments, combined with Figures 3 to 5 The first heat insulation ring 420 and the magnetic sensing element 300 are arranged at intervals along the axial direction of the disk body 100.

[0096] It is understandable that there is a certain gap between the first heat insulation ring 420 and the magnetic sensing element 300 along the axial direction of the pan body 100. Thus, there is no direct contact between the two, which further reduces the direct conduction of heat from the magnetic sensing element 300 to the first heat insulation ring 420. This helps to guide the heat to the cookware more concentratedly, reduce the lateral diffusion and loss of heat, and improve heating efficiency and stability.

[0097] In addition, the presence of axial spacing provides a certain degree of freedom for the magnetic sensing element 300 and the first heat insulation ring 420, which helps to prevent the magnetic sensing element 300 from being squeezed or deformed due to thermal expansion, and helps to maintain the overall performance and stability of the coil disk 10.

[0098] In some embodiments, combined with Figures 3 to 5 The first heat insulation ring 420 is located at the end of the first boss 412 away from the first coil 210, and the radial inner edge of the first heat insulation ring 420 is located inside the first boss 412.

[0099] In this way, the layout ensures that the first heat insulation ring 420 can cover the edge of the magnetic sensing element 300, so that the heat can be applied to the cookware more concentratedly, reducing the lateral diffusion and loss of heat, and helping to improve heating efficiency and uniformity.

[0100] In some embodiments, combined with Figures 3 to 5 The first boss 412 is provided along the edge of the pad body 411, which helps to provide stable positioning and support for the magnetic sensing element 300. A second boss 413 is also provided on the surface of the pad body 411 facing away from the first coil 210. The second boss 413 is located inside the first boss 412. This design enhances the structural strength of the heat insulation pad 410 and also provides an additional support point for the magnetic sensing element 300.

[0101] The magnetic sensing element 300 is provided with a through hole 310 that passes through the second protrusion 413. The second protrusion 413 passes through the through hole 310, thus the second protrusion 413 can pass through the through hole 310, further realizing the limiting between the magnetic sensing element 300 and the pad body 411.

[0102] It can be seen that by setting a first protrusion 412 and a second protrusion 413 on the pad body 411, and allowing the second protrusion 413 to pass through the through hole 310 of the magnetic sensing element 300, the limiting and fixing effect of the magnetic sensing element 300 is enhanced, and the installation stability of the magnetic sensing element 300 and the structural stability of the heat insulation pad 410 are improved.

[0103] In addition, the design of the through hole 310 allows the second boss 413 to be easily inserted into the magnetic sensing element 300, which simplifies the assembly process of the coil disk 10 and helps to improve assembly efficiency.

[0104] In some embodiments, combined with Figure 5 The heat insulation component 400 also includes a second heat insulation ring 430, which is located at the end of the second boss 413 away from the first coil 210. The projection of the second heat insulation ring 430 in the reference plane at least partially coincides with the projection of the magnetic sensing element 300 in the reference plane. The reference plane is perpendicular to the axis of the disk body 100.

[0105] Thus, the second heat insulation ring 430 can further enhance the limiting effect on the magnetic sensing element 300, preventing possible displacement of the magnetic sensing element 300, thereby enhancing the overall structural stability of the coil 10. In addition, this design also helps to reduce local heat accumulation and overheating, and improve heating uniformity.

[0106] In some embodiments, combined with Figure 2 and Figure 6 The coil 10 also includes a heat insulation frame 440, which includes a first region 441 and a second region 442. The first region 441 is located on the side of the heat insulation pad 410 facing the first coil 210. This position design helps to form an additional heat insulation layer between the first coil 210 and the heat insulation pad 410, further blocking the direct conduction of heat from the first coil 210 to the heat insulation pad 410, thereby improving the heat insulation efficiency.

[0107] Optionally, the material of the heat insulation frame 440 may include ceramic fiber, aluminum silicate fiber, aerogel, etc., which have high thermal resistance, low density and good chemical stability.

[0108] The second region 442 surrounds the periphery of the heat insulation pad 410, thus forming a complete heat insulation barrier. This design helps to form an additional heat insulation layer between the second coil 220 and the heat insulation pad 410, further preventing heat from leaking out from the sides of the heat insulation pad 410, and also provides additional support and protection for the heat insulation pad 410, enhancing its structural stability.

[0109] As can be seen, the design of the heat insulation frame 440 further enhances the heat insulation effect of the coil 10, effectively blocking heat conduction and leakage, and improving heating efficiency. In addition, the heat insulation frame 440 also provides additional support for the heat insulation pad 410, enhancing the overall structural stability.

[0110] In some embodiments, the thickness of the heat insulation frame 440 is 0.5mm-5mm. Optionally, the thickness of the heat insulation frame 440 can be 0.5mm, 1mm, 2mm, 2.5mm, 3.5mm, 5mm, etc. Specific designs can be selectively chosen according to actual needs and are not limited here.

[0111] It is understandable that 0.5mm helps reduce the overall volume and weight of the coil 10 while still maintaining a certain level of thermal insulation performance, while 5mm helps provide more reliable thermal insulation protection and structural strength.

[0112] In some embodiments, the heat insulation frame 440 includes at least one of mica components and plastic components. Specific designs can be selectively chosen according to actual needs and are not limited herein.

[0113] Mica possesses excellent thermal insulation and electrical insulation properties, as well as good high-temperature resistance, corrosion resistance, and mechanical strength, maintaining stable thermal insulation performance in high-temperature environments. Some high-performance plastic materials typically offer lightweight properties, good processability, and cost-effectiveness.

[0114] In some embodiments, the thickness of the heat insulation pad 410 is greater than or equal to 2 mm and less than or equal to 15 mm. Optionally, the thickness of the heat insulation pad 410 can be 2 mm, 3 mm, 5 mm, 10 mm, 13 mm, 15 mm, etc. Specific designs can be selectively chosen according to actual needs and are not limited here.

[0115] In some embodiments, the thickness of the first heat insulation ring 420 is greater than or equal to 1 mm and less than or equal to 20 mm. Optionally, the thickness of the first heat insulation ring 420 can be 1 mm, 3 mm, 5 mm, 10 mm, 13 mm, 15 mm, 20 mm, etc. The specific design can be selectively made according to actual needs, and no restrictions are imposed here.

[0116] In some embodiments, the thickness of the second heat insulation ring 430 is greater than or equal to 1 mm and less than or equal to 20 mm. Optionally, the thickness of the second heat insulation ring 430 can be 1 mm, 3 mm, 5 mm, 10 mm, 13 mm, 15 mm, 20 mm, etc. Specific designs can be selectively chosen according to actual needs and are not limited here.

[0117] Understandably, the design of thinner heat insulation pads 410, first heat insulation rings 420, and second heat insulation rings 430 helps to reduce the overall volume and weight of the coil 10 while still maintaining a certain level of heat insulation performance, while the design of thicker heat insulation pads 410, first heat insulation rings 420, and second heat insulation rings 430 helps to provide more reliable heat insulation protection and structural strength.

[0118] Optionally, the thickness of the heat insulation pad 410, the first heat insulation ring 420, and the second heat insulation ring 430 can be adjusted according to actual needs. For example, combined with... Figures 3 to 5 The second protrusion 413 of the heat insulation pad 410 gradually decreases in thickness from the pad body 411 toward the cookware in the axial direction. This design provides guidance for the installation of the magnetic sensing element 300 and improves assembly efficiency.

[0119] In some embodiments, combined with Figure 2 The plate body 100 has a mounting groove 100a along its own axis and facing the opening of the pot. The first coil 210, the heat insulation component 400 and the magnetic sensing component 300 are all located in the mounting groove 100a, and the second coil 220 is located outside the mounting groove 100a.

[0120] The mounting slot 100a allows the first coil 210, the heat insulation component 400, and the magnetic sensing element 300 to be arranged inside the pan body 100, improving space utilization. Furthermore, the placement of the second coil 220 outside the mounting slot 100a applies a magnetic field to the edge of the magnetic sensing element 300. Combined with the heating effect of the first coil 210 on the magnetic sensing element 300, this results in more uniform and efficient heating of the magnetic sensing element 300. Additionally, the opening of the mounting slot 100a faces the cookware, facilitating direct heat transfer from the magnetic sensing element 300 to the cookware and reducing heat loss.

[0121] It is evident that the design of the mounting slot 100a optimizes the layout of the electromagnetic coil 200, the heat insulation component 400, and the magnetic sensing element 300, improving space utilization and heating power, and also enhancing the adaptability and compatibility of the coil disc 10.

[0122] In some embodiments, combined with Figure 2 and Figure 3 The plate body 100 includes a first mounting part 110 and a second mounting part 120. The first mounting part 110 is used to carry the first coil 210 and can be located in the central area of ​​the plate body 100, facing the cookware, so as to ensure that the heat can be effectively transferred to the cookware.

[0123] The second mounting portion 120 surrounds the periphery of the first mounting portion 110, and the second mounting portion 120 is higher than the first mounting portion 110, so that the first mounting portion 110 and the second mounting portion 120 together define the mounting groove 100a. Optionally, the second mounting portion 120 may also be provided with a heat dissipation vent to improve heat dissipation and ventilation efficiency, thereby ensuring the stability and reliability of the coil 10 during long-term operation.

[0124] Understandably, the first mounting part 110 and the second mounting part 120 together define a mounting groove 100a facing the opening of the pot. The mounting groove 100a provides a compact and orderly mounting space for the first coil 210, the heat dissipation component and the magnetic sensing element 300, and also helps to optimize the heating effect.

[0125] A first coil 210 is disposed in the first mounting portion 110, and a second coil 220 is disposed in the second mounting portion 120. Thus, the first coil 210 is located at the bottom of the mounting groove 100a, in close contact with the magnetic sensing element 300. When energized, the first coil 210 generates a magnetic field in the magnetic sensing element 300, thereby inducing eddy current heating. The second coil 220 surrounds the periphery of the first mounting portion 110, located outside the mounting groove 100a but close to the magnetic sensing element 300, and induces eddy current heating on the edge of the magnetic sensing element 300, making the heating of the magnetic sensing element 300 more uniform and efficient. Furthermore, the second coil 220 can also directly electromagnetically heat metal cookware, increasing the heating power.

[0126] The second mounting portion 120, being higher than the first mounting portion 110, forms a mounting groove 100a and defines the height difference between the first coil 210 and the second coil 220. This height difference helps to better utilize space, making the coil disk 10 more compact. Furthermore, this height difference design helps improve heat dissipation by increasing the contact area with air, thus aiding in heat dissipation. In addition, the design of the first mounting portion 110 and the second mounting portion 120 enhances the overall structural stability of the coil disk 10, enabling it to withstand greater loads and more complex working environments.

[0127] In some embodiments, combined with Figures 2 to 5The first mounting part 110 has a plurality of first partition ribs on the side surface facing the pot. The plurality of first partition ribs are distributed at radial intervals along the plate body 100. A first wire groove is defined between two adjacent partition ribs. The first coil 210 is wound in the first wire groove.

[0128] Thus, this design enhances the structural strength of the first mounting section 110 and provides a path for the winding of the first coil 210. The first slot provides space for the winding of the first coil 210, allowing the first coil 210 to be tightly wound within the first slot, ensuring a uniform distribution of the magnetic field and efficient heat transfer.

[0129] In some embodiments, combined with Figures 2 to 5 The second mounting part 120 is provided with a plurality of second partition ribs distributed radially at intervals along the pan body 100 on the side surface facing the cookware. A second wire groove is defined between two adjacent second partition ribs, and the second coil 220 is wound in the second wire groove.

[0130] Similar to the first rib, the second rib enhances the structural strength of the second mounting part 120 and provides a path for the winding of the second coil 220. The second slot provides space for the winding of the second coil 220, allowing the second coil 220 to be tightly wound within the second slot, enabling the second coil 220 to work in conjunction with the first coil 210, further optimizing the magnetic field distribution and heating effect.

[0131] As can be seen, the rib design enhances the structural strength of the pan 100, enabling it to withstand greater loads and more complex working environments. Through the design of the ribs and wire grooves, the coil can be wound orderly on the pan 100, avoiding problems such as coil loosening or deformation, thereby improving heating power and stability. Furthermore, the rib and wire groove design also helps optimize the magnetic field distribution, allowing the magnetic field generated by the coil to act more evenly on the magnetic sensing element 300 and the cookware, thus achieving a more uniform heating effect.

[0132] In some embodiments, combined with Figures 3 to 5 On the side of the plate 100 facing the cookware, the height of the second coil 220 is not lower than the height of the magnetic sensing element 300.

[0133] In this way, the design can make greater use of magnetic field energy, causing the magnetizing element 300 to generate more eddy currents, thereby increasing the heating power. It also helps to achieve more uniform and rapid heating, reduce heating time, and improve cooking efficiency.

[0134] In some embodiments, combined with Figure 2 and Figure 3 The inner diameter of the second coil 220 is larger than the outer diameter of the first coil 210. The projection of the magnetic sensing element 300 in the reference plane is inside the projection of the second coil 220 in the reference plane. The reference plane is perpendicular to the axis of the disk body 100.

[0135] In this way, the design ensures that the magnetizing element 300 is fully exposed to the magnetic field generated by the second coil 220, thereby maximizing the use of magnetic field energy for heating.

[0136] By defining the relative positions of the magnetic sensing element 300, the first coil 210, and the second coil 220, the distribution of the magnetic field can be optimized. This design helps reduce magnetic field leakage, improve energy transfer efficiency, and reduce unnecessary energy loss. Furthermore, this design also helps shorten heating time, improve cooking efficiency, and achieve a fast and uniform heating experience.

[0137] In some embodiments, combined with Figures 3 to 5 The projection of the magnetic sensing element 300 in the reference plane is located inside the projection of the first coil 210 in the reference plane.

[0138] It is understandable that the magnetic sensing element 300 is designed to be located on the side of the first coil 210 facing the cookware, and the projection of the magnetic sensing element 300 in the reference plane is located inside the projection of the first coil 210 in the reference plane. This design allows magnetic field energy to be efficiently transmitted from the first coil 210 to the magnetic sensing element 300, which helps to ensure that the magnetic sensing element 300 can fully receive the magnetic field energy, thus realizing the efficient transmission and utilization of magnetic field energy.

[0139] In addition, when magnetic field energy acts on the magnetic sensing element 300, eddy currents will be generated inside the magnetic sensing element 300, thereby generating heat. Due to the positional relationship between the magnetic sensing element 300 and the first coil 210, this heating process can be carried out more efficiently and uniformly.

[0140] This design ensures that the magnetic field lines generated by the first coil 210 mainly pass through the magnetic sensing element 300, reducing the loss of the magnetic field in the air and allowing more magnetic energy to be converted into heat energy, thereby increasing the heating power. In addition, when the magnetic sensing element 300 is completely located inside the projection of the first coil 210, the magnetic field lines will pass through the magnetic sensing element 300 more evenly, thereby ensuring the uniform distribution of heat on the cookware and guaranteeing the heating effect.

[0141] In some embodiments, the ratio of the number of strands in the first coil 210 to the number of strands in the second coil 220 is 0.2-5. Optionally, the ratio can be 0.2, 0.8, 1.5, 2.3, 3.6, 4.8, or 5.

[0142] Through simulation analysis, the optimal ratio range between the number of strands of the first coil 210 and the second coil 220 was determined to be 0.2-5. This ratio range is designed to balance heating power, heat distribution uniformity, and cookware compatibility.

[0143] Understandably, if the number of strands in the second coil 220 is too small, the heating performance at the edges of the magnetic induction element 300 will be weakened, affecting the electromagnetic heating performance of the cookware above, thus reducing the overall heating power. Conversely, if the number of strands in the first coil 210 is too small, the center of the magnetic induction element 300 will not generate enough heat, while the edges will generate too much heat, resulting in uneven heat distribution. Furthermore, the reduction in the overall power of the magnetic induction element 300 will also affect the power output when heating non-metallic cookware.

[0144] Thus, by optimizing the ratio of the number of strands in the first coil 210 to the second coil 220, the coil plate 10 can be ensured to heat the cookware efficiently. This design helps to improve the heating speed and shorten the cooking time. In addition, a reasonable ratio of the number of coil strands also helps to achieve a uniform distribution of heat on the magnetic induction element 300, improves the heating power, and can also reduce the problem of local overheating caused by concentrated heat.

[0145] The optimized coil design allows the coil 10 to be more widely applicable to different types of cookware, including metal and non-metal cookware, enhancing the versatility and practicality of the coil 10.

[0146] In some embodiments, preferably, the magnetic sensing element 300 comprises an iron-chromium-aluminum alloy or a nickel-chromium alloy.

[0147] Iron-chromium-aluminum alloys possess high magnetic permeability and good heat resistance, while nickel-chromium alloys exhibit good resistivity, corrosion resistance, and high-temperature stability. This material selection ensures that the coil 10 can efficiently heat different types of cookware, while also maintaining uniform heat distribution and enhancing cookware compatibility.

[0148] In some embodiments, combined with Figures 2 to 6 The coil disk 10 also includes a first magnetic element 510, which is disposed on the first mounting portion 110. At least a portion of the structure of the first magnetic element 510 is located on the side of the first coil 210 away from the magnetic sensing element 300.

[0149] The magnetic properties of the first magnetic element 510 enhance the magnetic field strength around the first coil 210. Furthermore, since it is located on the side of the first coil 210 opposite to the magnetizing element 300, it helps guide the direction of the magnetic field and reduces downward radiated magnetic fields.

[0150] In some embodiments, combined with Figure 3 and Figure 4The coil disk 10 also includes a second magnetic element 520. The first magnetic element 510 is disposed in the second mounting portion 120, and at least a portion of the structure of the second magnetic element 520 is disposed on the side of the second coil 220 facing away from the magnetic sensing element 300. Similar to the first magnetic element 510, the second magnetic element 520 enhances the magnetic field strength around the second coil 220 and guides the direction of the magnetic field, reducing the downward radiated magnetic field.

[0151] Optionally, the first mounting portion 110 is provided with a first receiving groove for accommodating the first magnetic component 510, and the second mounting portion 120 is provided with a second receiving groove for accommodating the second magnetic component 520. The first magnetic component 510 is engaged in the first receiving groove, and the second magnetic component 520 is engaged in the second receiving groove. The first receiving groove and the second receiving groove provide mounting positions for the first magnetic component 510 and the second magnetic component 520, ensuring the installation stability of the first magnetic component 510 and the second magnetic component 520.

[0152] It is evident that the design of the first magnetic component 510 and the second magnetic component 520 enhances the magnetic field strength inside the coil disk 10, increases eddy current generation, and thus improves heating efficiency and thermal power. Furthermore, by rationally designing the position and shape of the magnetic components, the direction of the magnetic field can be effectively guided, reducing the downward radiated magnetic field from the coil, which helps to reduce electromagnetic interference and improve electromagnetic compatibility.

[0153] In addition, the design of the first magnetic element 510 and the second magnetic element 520 helps to optimize the heat distribution inside the coil disk 10. By enhancing the magnetic field strength and guiding the magnetic field direction, heat can be distributed more evenly, reducing local overheating and improving the uniformity and efficiency of heating.

[0154] Additionally, in some embodiments, combined with Figures 2 to 5 The first magnetic component 510 includes a first magnetic segment and a second magnetic segment.

[0155] The first magnetic segment extends radially along the disk body 100 and is located on the side of the first coil 210 opposite to the magnetic sensing element 300. The second magnetic segment extends axially along the disk body 100 and is located radially outside the first coil 210.

[0156] Understandably, the first magnetic segment enhances the radial magnetic field strength around the first coil 210 through its magnetic properties, which helps guide the direction of the magnetic field so that more magnetic lines of force can pass through the magnetizing element 300, thereby increasing the heating power. In addition, since the first magnetic segment is located on the side of the coil away from the magnetizing element 300, it also helps to reduce the downward radiating magnetic field.

[0157] The second magnetic segment mainly serves to optimize the distribution of magnetic field and heat. Through its axially extended structure, the second magnetic segment can guide the magnetic field to be distributed more evenly in the axial direction, reducing local overheating. In addition, the second magnetic segment also helps to further reduce the downward radiating magnetic field and improve electromagnetic compatibility.

[0158] Thus, the combined effect of the first and second magnetic segments significantly enhances the magnetic field strength inside the coil disk 10 and makes its distribution more uniform, which helps to improve heating power and heating uniformity. In addition, through the reasonable design of the position and shape of the first and second magnetic segments, the magnetic field radiated downward by the electromagnetic coil 200 is effectively reduced, and the direction of the magnetic field is guided and the magnetic field strength is enhanced, so that heat is distributed more evenly, reducing local overheating and improving heating uniformity and efficiency.

[0159] In some embodiments, combined with Figures 2 to 5 The second magnetic component 520 includes a third magnetic segment and a fourth magnetic segment.

[0160] The third magnetic segment extends along the axial direction of the disk body 100 and is located on the radial outer side of the second coil 220. The fourth magnetic segment extends along the radial direction of the disk body 100 and is located on the side of the second coil 220 opposite to the magnetic sensing element 300.

[0161] Understandably, the main function of the third magnetic segment is to enhance and guide the magnetic field around the radial periphery of the coil, while the main function of the fourth magnetic segment is to enhance the magnetic field coupling between the coil and the cookware.

[0162] Specifically, the third magnetic segment helps to guide the magnetic field to be distributed more evenly in the axial direction, thereby enhancing the overall magnetic field strength of the coil disk 10. In addition, it can also reduce the downward radiated magnetic field of the coil to a certain extent and improve electromagnetic compatibility.

[0163] The fourth magnetic segment, through its radially extending structure, can guide more magnetic lines of force through the cookware, thereby increasing the heating power. In addition, its close position to the cookware helps to reduce the leakage of the magnetic field under the cookware, further reducing electromagnetic interference.

[0164] It is evident that the combined effect of the third and fourth magnetic segments enhances the magnetic field coupling between the coil and the cookware, increasing the heating power and enabling the coil 10 to heat the cookware more quickly while reducing energy loss. Furthermore, by rationally designing the position and shape of the third and fourth magnetic segments, the magnetic field distribution inside the coil 10 becomes more uniform, reducing unnecessary electromagnetic radiation and contributing to improved electromagnetic compatibility.

[0165] The design of the third and fourth magnetic segments also helps to improve the uniformity of heating. By guiding the direction of the magnetic field and enhancing the magnetic field strength, the coil 10 can distribute heat more evenly, reduce local overheating, and thus provide a better cooking experience.

[0166] In some embodiments, combined with Figures 2 to 5 The first coil 210 includes multiple first layers formed by winding, which are stacked along the axial direction of the disk 100. The multi-layered first coil 210 can generate a more uniform and powerful magnetic field, thereby increasing the heating power. In addition, since the multiple layers are stacked in the axial direction, they can work together on the magnetic sensing element 300, causing the magnetic lines of force to pass through the magnetic sensing element 300 more densely, generating more eddy currents and heat.

[0167] The second coil 220 includes multiple second layers formed by winding, which are stacked along the axial direction of the disk 100. The number of second layers is greater than the number of first layers. Compared with the first coil 210, the second coil 220 has more layers, which further enhances its electromagnetic performance. It can be understood that more layers mean more magnetic lines of force can pass through the magnetizing element 300, thereby generating more heat.

[0168] Understandably, both the first and second layers are multi-layered coils. It is evident that the multi-layered winding and the design of more layers enable the electromagnetic coil 200 to generate a stronger and more uniform magnetic field, thereby increasing the heating power and allowing the coil 10 to heat the pot faster and reduce waiting time.

[0169] The stacking of multiple coils along the axial direction allows for a more uniform heat distribution both axially and radially, helping to reduce localized overheating and improve heating uniformity and comfort. Furthermore, the multi-layered winding and increased number of coils also help reduce electromagnetic interference and improve electromagnetic compatibility.

[0170] Additionally, this application also provides a stove that includes the coil 10 found in any of the above embodiments. Optionally, the stove can be an induction cooker, a ceramic cooker, a built-in stove, etc.

[0171] By incorporating the aforementioned coil 10 into the stove, its versatility is enhanced, making it suitable for various cookware types. This also improves the heating effect on metal cookware, increases heating power, and ensures stable heating. Furthermore, the inclusion of a heat insulation component 400 in the coil 10 protects the electromagnetic coil 200, improving its durability and extending the lifespan of both the coil 10 and the stove.

[0172] In some embodiments, the stove also includes a control system connected to the electromagnetic coil 200. It is understood that, compared to conventional technologies where electromagnetic heating and heat conduction require two separate systems to control electromagnetic and heat conduction independently, the stove provided in this application uses only one control system to achieve both electromagnetic and heat conduction heating methods. This simplifies control, reduces the number of mainboard components, and lowers production costs.

[0173] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0174] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0175] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0176] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A coil for heating cookware, characterized in that, The coil disk includes: Disk body; An electromagnetic coil is disposed on the disk body, and the electromagnetic coil includes a first coil and a second coil; A magnetic sensing element is disposed on the plate body, the magnetic sensing element being located on the side of the first coil facing the cookware and radially inside at least a portion of the structure of the second coil, the magnetic sensing element being adapted to generate heat under the action of the magnetic field lines of the first coil and the second coil to heat the cookware; A heat insulation component is used to fix the magnetic sensing element and to block heat conduction between the magnetic sensing element and the electromagnetic coil.

2. The coil disk according to claim 1, characterized in that, The thermal insulation component includes: A heat insulation pad is disposed on the pan body. The first coil is located on the side of the heat insulation pad facing away from the cookware, and the second coil is located on the radially outer side of the pan body. The magnetic sensing element is disposed on the side of the heat insulation pad facing away from the first coil.

3. The coil disk according to claim 2, characterized in that, The heat insulation pad includes: Pad body; A first protrusion is provided on the side of the pad body facing away from the first coil. The first protrusion is in the shape of an annulus extending circumferentially along the pad body. The magnetic sensing element is provided on the radial inner side of the first protrusion.

4. The coil disk according to claim 3, characterized in that, The height of the first boss is higher than the height of the magnetic sensing element.

5. The coil disk according to claim 3, characterized in that, The thermal insulation component also includes: A first heat insulation ring is disposed on the first boss. The first heat insulation ring is located on the side of the magnetic sensing element facing away from the first coil. The projection of the first heat insulation ring in the reference plane at least partially coincides with the projection of the magnetic sensing element in the reference plane. The reference plane is perpendicular to the axis of the disk body.

6. The coil disk according to claim 5, characterized in that, The width of the area where the projection of the first heat insulation ring in the reference plane and the projection of the magnetic sensing element in the reference plane overlap along the radial direction of the disk body is 0.5mm-5mm.

7. The coil disk according to claim 5, characterized in that, The first heat insulation ring and the magnetic sensing element are arranged at an axial distance along the disk body.

8. The coil disk according to claim 7, characterized in that, The first heat insulation ring is located at the end of the first boss away from the first coil, and the radial inner edge of the first heat insulation ring is located inside the first boss.

9. The coil disk according to claim 3, characterized in that, The first boss is provided along the edge of the pad body, and the surface of the pad body facing away from the first coil is also provided with a second boss, which is located inside the first boss. The magnetic sensing element is provided with a through hole corresponding to the second boss, and the second boss passes through the through hole.

10. The coil disk according to claim 9, characterized in that, The thermal insulation component also includes: The second heat insulation ring is disposed at the end of the second protrusion away from the first coil. The projection of the second heat insulation ring in the reference plane at least partially coincides with the projection of the magnetic sensing element in the reference plane. The reference plane is perpendicular to the axis of the disk body.

11. The coil disk according to claim 2, characterized in that, Also includes: heat insulation The heat insulation frame includes a first region and a second region, the first region being located on the side of the heat insulation pad facing the first coil, and the second region surrounding the periphery of the heat insulation pad.

12. The coil disk according to claim 11, characterized in that, The thickness of the heat insulation frame is 0.5mm-5mm; and / or, The heat insulation frame includes at least one of mica components and plastic components.

13. The coil disk according to claim 2, characterized in that, The thickness of the heat insulation pad is greater than or equal to 2 mm and less than or equal to 15 mm.

14. The coil disk according to any one of claims 1-13, characterized in that, The plate has a mounting groove along its own axis and facing the opening of the cookware. The first coil, the heat insulation component and the magnetic sensing component are all disposed in the mounting groove, and the second coil is located outside the mounting groove.

15. The coil disk according to claim 14, characterized in that, The disc body includes a first mounting portion and a second mounting portion, the second mounting portion surrounding the periphery of the first mounting portion, and the second mounting portion being higher than the first mounting portion, so that the first mounting portion and the second mounting portion together define the mounting groove. The first coil is disposed in the first mounting part, and the second coil is disposed in the second mounting part.

16. The coil disk according to claim 15, characterized in that, Also includes: A first magnetic element is disposed on the first mounting portion, and at least a portion of the structure of the first magnetic element is located on the side of the first coil opposite to the magnetic sensing element. And / or, The second magnetic element is disposed on the second mounting portion, and at least a portion of the structure of the second magnetic element is disposed on the side of the second coil opposite to the magnetic sensing element.

17. A stove, characterized in that, include: The coil disc according to any one of claims 1-16.

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