Electromagnetic heating device

Abstract

The utility model discloses an electromagnetic heating device which comprises a disc body, the disc body comprises a bottom wall and an arc-shaped part surrounding the periphery of the bottom wall, a first coil is wound on the bottom wall, the electromagnetic heating device further comprises a plurality of winding frames arranged on the arc-shaped part at intervals in the circumferential direction, and a second coil is wound between the winding frames and the arc-shaped part. The electromagnetic heating device further comprises a magnetic strip frame, the magnetic strip frame comprises an inner fixing part, an outer fixing part surrounding the peripheral side of the inner fixing part and a magnetic strip mounting part arranged between the inner fixing part and the outer fixing part, the magnetic strip mounting part abuts against the first coil, and the outer fixing part abuts against the winding frame. The magnetic strip frame can play a role in limiting the coils at the two positions at the same time, and it is guaranteed that the coils in the two areas are regular and stable. When the winding frame is fixed to the arc-shaped part, the winding frame can have a certain pressing and limiting effect on the second coil, the external fixing part abuts against the winding frame, the pressing force of the winding frame on the second coil is increased, and the second coil is not prone to loosening.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to an electromagnetic heating device. Background Technology

[0002] Because electromagnetic heating has high heating efficiency and can heat the cookware without contact, it is increasingly used in cooking appliances. The electromagnetic coil, as one of the most important heating components in electromagnetic cooking appliances, typically consists of a coil body and a coil wound around it.

[0003] To improve heating efficiency, existing technologies often involve winding coils in multiple areas of the coil body to create multiple heating zones. For example, the coil body includes a bottom wall and an arc-shaped wall extending upwards from the bottom wall. The coils are wound on the bottom wall and the arc-shaped wall respectively, thereby creating multiple heating zones at the bottom and sides of the electromagnetic coil.

[0004] Since the bottom wall of the coil is mostly a planar structure, the coil wound on the bottom wall is usually more regular and easier to maintain stability after winding. In addition, the electromagnetic coil is often equipped with a wire pressing structure, which can press down the coil wound on the bottom wall, making the bottom coil less likely to loosen.

[0005] The surface of the arc-shaped wall is curved, which makes it difficult to wind coils on its surface. The coils are often difficult to fit into the curved surface. After winding, although the coil frame set on the arc-shaped wall can limit the coil to a certain extent, the curved structure makes the pressure on the coil unstable. Therefore, the coils wound on the arc-shaped wall are still prone to loosening, which affects the heating effect on the side. Utility Model Content

[0006] This invention provides an electromagnetic heating device to solve the problem that it is difficult to wind coils on the arc-shaped wall of the plate, and that it is impossible to properly limit the coils, which leads to the coils becoming loose.

[0007] The technical solution adopted in this utility model is as follows:

[0008] An electromagnetic heating device includes a disc body, which includes a bottom wall and an arc-shaped portion surrounding the outer periphery of the bottom wall. A first coil is wound around the bottom wall. The electromagnetic heating device also includes a plurality of winding frames spaced circumferentially at intervals on the arc-shaped portion. A second coil is wound between the winding frames and the arc-shaped portion. The electromagnetic heating device also includes a magnetic strip frame, which includes an inner fixing portion, an outer fixing portion surrounding the outer periphery of the inner fixing portion, and a magnetic strip mounting portion disposed between the inner fixing portion and the outer fixing portion. The magnetic strip mounting portion abuts against the first coil, and the outer fixing portion abuts against the winding frames.

[0009] In this invention, a first coil is wound around the bottom wall of the plate, and multiple winding frames are spaced circumferentially at intervals on the arc-shaped portion. A second coil is wound around each winding frame, creating multiple spaced heating zones on the arc-shaped portion. During cooking, these zones, together with the heating zones on the bottom wall, achieve multi-directional, three-dimensional heating of the food, resulting in more even heating, improved heating efficiency, and consistent texture across all areas. Furthermore, during heating, the magnetic fields generated by opposing coils on the arc-shaped portion superimpose to enhance each other, while the magnetic fields generated by coils from different groups further enhance each other, increasing heating efficiency and reducing power consumption.

[0010] In addition, the electromagnetic heating device also includes a magnetic strip holder. When the magnetic strip holder is installed on the disc body, the magnetic strip mounting part abuts against the first coil wound on the bottom wall, forming a pressing and limiting effect on the first coil. At the same time, the outer fixing part abuts against the winding frame, forming a pressing and limiting effect on the second coil located in the arc-shaped part. This allows the magnetic strip holder to simultaneously limit the coils at two locations, ensuring the regularity and stability of the coils in both areas. For the second coil, when the winding frame is fixed to the arc-shaped part, the winding frame can provide a certain pressing and limiting effect on the second coil. The abutment of the winding frame by the outer fixing part increases the pressing force of the winding frame on the second coil, making the second coil less prone to loosening.

[0011] One of the outer fixing part and the winding frame is provided with a protruding abutting part, and the other is provided with a mating groove. The abutting part can be inserted into the mating groove so that the outer fixing part abuts against the winding frame to press the second coil.

[0012] In this design, the insertion and engagement of the abutment part and the mating groove not only ensures a stable contact between the outer fixing part and the winding frame, but also allows the magnetic strip holder to apply a uniform and stable abutment force to the winding frame. This prevents the second coil from loosening and also avoids slippage between the magnetic strip holder and the winding frame at the contact point. Furthermore, during the assembly of the magnetic strip holder, the insertion of the abutment part and the mating groove allows for positioning, improving the accuracy of the magnetic strip holder's installation position and angle. This ensures the magnetic component has good stability and enhances the magnetic field, while the magnetic strip holder also provides a good limiting effect for the first and second coils.

[0013] The winding frame has a pressing position and multiple pressing arms extending outward from the pressing position, with an abutment or mating groove provided at the pressing position.

[0014] In this design, multiple pressure arms extend outward from the pressing position, and the second coil is wound between the pressure arms and the disc body. The pressing position is located between the multiple pressure arms. Therefore, when the pressing position is abutted by the external fixing part, the abutting force can be evenly distributed to each pressure arm, thereby applying a uniform pressing force to the second coil in the circumferential direction, maintaining the regularity of the second coil, and preventing the second coil from becoming loose locally due to uneven force.

[0015] A fixing post is provided between the outer fixing part and the winding frame. The magnetic strip frame is fixedly connected to the winding frame through the fixing post so that it abuts against the winding frame under the action of fixing force to press the second coil.

[0016] In this design, the external fixing part is fixedly connected to the winding frame via a fixing post, thereby forming a stable pressing force on the winding frame under the action of preload to limit the second coil. At the same time, the fixing of the external fixing part to the winding frame also improves the fixing effect of the magnetic strip frame, making the relative position of the magnetic strip frame and the disk body more stable. This, in turn, makes the magnetic component's enhancement and stabilization effect on the magnetic field, as well as the limiting effect of the magnetic strip frame on the first and second coils, more stable, and prevents the magnetic strip frame from shaking relative to the disk body.

[0017] The bottom wall is provided with pressure ribs, and the first coil is wound between the pressure ribs and the bottom wall. The pressure ribs are arranged at intervals along the circumference of the disc, and the magnetic strip mounting part is staggered with the pressure ribs.

[0018] In this design, the magnetic strip mounting part and the pressure ribs are staggered. The first coil is limited not only by the pressure ribs but also by the magnetic strip mounting part, and the clamping positions are dispersed, thereby improving the clamping effect on the first coil in the circumferential direction and keeping the first coil regular. At the same time, it ensures that the magnetic field generated by the magnetic components on the magnetic strip mounting part can effectively function, while the pressure ribs can also stabilize the winding, improving the overall performance.

[0019] Multiple magnetic strip mounting parts are arranged at intervals along the axial direction of the disc body. A fixing rib is provided between two adjacent magnetic strip mounting parts. The fixing rib is connected to the magnetic strip mounting part and abuts against the wire pressing rib to press the first coil.

[0020] In this design, the magnetic strip mounting section not only directly applies pressure to the first coil to limit its movement, but also indirectly applies pressure to the first coil by pressing the wire clamping rib with the fixing rib. This ensures that the magnetic strip mounting section and the wire clamping rib firmly press the first coil onto the surface of the disc, improving the limiting effect on the first coil. Furthermore, the fixing rib connects the various magnetic strip mounting sections, also serving a structural reinforcement function, increasing the structural strength of the magnetic strip mounting section and reducing the risk of deformation or breakage.

[0021] The edge of the inner fixing part is provided with a flange extending toward the bottom wall. One end of the magnetic strip mounting part is fixed to the flange. The flange is provided with a clearance groove between two adjacent magnetic strip mounting parts to avoid the pressure wire rib.

[0022] In this design, the magnetic strip mounting section extends radially outward from the inner fixing section and is fixed to the flange. This increases the connection area between the magnetic strip mounting section and the inner fixing section, thereby improving the fixing strength and effect. Simultaneously, the clearance groove allows the pressure ribs to pass through, making the assembly of the magnetic strip holder and the disc body more compact. This helps reduce the overall height of the electromagnetic heating device, resulting in a thinner and lighter overall design.

[0023] There are multiple magnetic strip mounting parts, and at least some of the magnetic strip mounting parts are provided with a hanging wire structure.

[0024] In this design, the hanging structure tightly engages both ends of the winding wire during the coil winding process, effectively preventing the coil from loosening and falling off, thus ensuring winding stability. Furthermore, it significantly improves coil reliability after winding is complete, keeping the coil taut and preventing it from slipping, ensuring the normal operation of the electromagnetic heating device.

[0025] The disk also includes a side wall, with an arc-shaped portion located between the bottom wall and the side wall. The side wall is provided with a winding groove, and a third coil is wound in the winding groove.

[0026] In this design, the first coil on the bottom wall corresponds to the bottom of the pot, thereby heating the bottom of the pot; the third coil on the side wall corresponds to the side of the pot, thereby heating the side of the pot; and the second coil on the arc-shaped part corresponds to the transition section between the bottom and the side of the pot or the side of the pot, thereby heating this area. This achieves multi-directional and multi-angle heating of the pot, making the heat distribution on the bottom, side, and transition area of ​​the pot more uniform, greatly improving the uniformity and heating effect of the pot, and increasing the heating efficiency.

[0027] The disk body includes a main body and a coil support. The third coil is wound on the main body, the winding frame is fixed to the coil support, and the first coil and the second coil are wound on the coil support.

[0028] In this design, the disk body has a split structure. After the first, second, and third coils are wound separately, the main body and coil support are assembled. During winding, the first, second, and third coils can be wound independently, making the winding operation simpler and more convenient. Furthermore, each area can be wound simultaneously, greatly improving winding efficiency. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the electromagnetic heating device according to one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the disc body according to one embodiment of the present invention;

[0032] Figure 3 This is an exploded view of the electromagnetic heating device according to one embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the magnetic strip holder according to one embodiment of the present invention;

[0034] Figure 5 for Figure 4 A schematic diagram of the structure on the other side of the magnetic stripe holder.

[0035] in:

[0036] 1. Disc body; 11. Bottom wall; 12. Arc-shaped part; 13. Side wall; 14. Winding groove; 15. Pressure rib; 16. Body; 161. Mounting post; 162. Drain hole; 17. Coil bracket;

[0037] 2. First coil;

[0038] 3. Second coil;

[0039] 4. Third coil;

[0040] 5. Winding frame; 51. Abutment part; 52. Wire pressing arm; 53. Pressing position;

[0041] 6. Magnetic strip holder; 61. Inner fixing part; 611. Center flange; 612. Flanged edge; 613. Circumferential groove; 614. Mounting hole; 615. Water passage hole; 62. Outer fixing part; 621. Annular rib; 622. Fixing post; 623. Mating groove; 624. Fixing hole; 63. Magnetic strip mounting part; 64. Hanging structure; 65. Fixing rib;

[0042] 7 Fasteners. Detailed Implementation

[0043] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0045] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] like Figure 1As shown, an electromagnetic heating device includes a disc body 1. The disc body 1 includes a bottom wall 11 and an arc-shaped portion 12 surrounding the outer periphery of the bottom wall 11. A first coil 2 is wound around the bottom wall 11. The electromagnetic heating device also includes a plurality of winding frames 5 arranged circumferentially at intervals on the arc-shaped portion 12. A second coil 3 is wound between the winding frames 5 and the arc-shaped portion 12. The electromagnetic heating device also includes a magnetic strip frame 6. The magnetic strip frame 6 includes an inner fixing portion 61, an outer fixing portion 62 surrounding the outer periphery of the inner fixing portion 61, and a magnetic strip mounting portion 63 disposed between the inner fixing portion 61 and the outer fixing portion 62. The magnetic strip mounting portion 63 abuts against the first coil 2, and the outer fixing portion 62 abuts against the winding frames 5.

[0049] Understandably, the magnetic strip mounting section 63 is equipped with magnetic components.

[0050] In this invention, a first coil 2 is wound around the bottom wall 11 of the plate body 1, and multiple winding frames 5 are arranged circumferentially at intervals on the arc-shaped portion 12. A second coil 3 is wound around each winding frame 5, forming multiple spaced heating zones on the arc-shaped portion 12. During cooking, these heating zones, together with the heating zones on the bottom wall 11, achieve multi-directional, three-dimensional heating of the food, making the food heated more evenly, improving heating efficiency, and ensuring a balanced texture in each area. Furthermore, during heating, the zoned magnetic fields generated by a group of coils arranged opposite each other on the arc-shaped portion 12 are superimposed to form a reinforcement, while the zoned magnetic fields generated by coils from different groups are further reinforced, resulting in improved heating efficiency and reduced power consumption.

[0051] In addition, the electromagnetic heating device also includes a magnetic strip holder 6. When the magnetic strip holder 6 is installed on the disc body 1, the magnetic strip mounting part 63 abuts against the first coil 2 wound on the bottom wall 11, forming a pressing and limiting action on the first coil 2. At the same time, the outer fixing part 62 abuts against the winding frame 5, forming a pressing and limiting action on the second coil 3 located in the arc-shaped part 12. This allows the magnetic strip holder 6 to simultaneously limit the coils in two locations, ensuring the regularity and stability of the coils in both areas. For the second coil 3, when the winding frame 5 is fixed to the arc-shaped part 12, the winding frame 5 can provide a certain pressing and limiting effect on the second coil 3. The abutment of the winding frame 5 by the outer fixing part 62 increases the pressing force of the winding frame 5 on the second coil 3, making the second coil 3 less prone to loosening.

[0052] The first coil 2 and the second coil 3 can be wound in a circular shape. Of course, the coils in both places can also be wound in other shapes, such as square, oval or irregular shapes, etc., which are not limited here.

[0053] Preferably, such as Figure 1 , Figure 2As shown, after the first coil 2 and the second coil 3 are wound, each turn of each coil contacts the previous turn, thus forming a tightly wound structure on the bottom wall 11 and the arc-shaped portion 12 of the disk body 1, respectively. Of course, a barrier structure can also be set between each turn of the first coil 2 and / or the second coil 3 to create a gap between adjacent turns of the coil, forming a loosely wound structure, which is not limited here.

[0054] It should be noted that the present invention does not limit the winding method of the second coil 3. In one embodiment, the second coil 3 is wound in the space between the winding frame 5 and the arc-shaped portion 12, so that the winding frame 5 and the disc body 1 clamp the second coil 3 and limit its movement. In another embodiment, the second coil 3 is wound on the winding frame 5. In this way, the second coil 3 can be wound on the winding frame 5 before the winding frame 5 is installed on the arc-shaped portion 12, so that the two form an assembly. Then, the winding frame 5 with the second coil 3 wound on it is fixed to the arc-shaped portion 12, so that it and the arc-shaped portion 12 together clamp the second coil 3.

[0055] Preferably, the winding racks 5 are in multiple groups, each group including two winding racks 5, which are fixed radially to the arc-shaped portions 12 on both sides of the plate body 1. Further, in one embodiment, the second coils 3 on each winding rack 5 are wound independently and discontinuously, allowing the second coils 3 in multiple areas to be wound independently, making the winding operation simpler and more convenient. Moreover, the second coils 3 in each area can be wound simultaneously, greatly improving winding efficiency. Furthermore, only one or more second coils 3 on the winding racks 5 can be energized, enabling independent operation of each heating zone. By combining heating zones at different locations, more heating modes can be obtained, thereby achieving zoned heating control. The flexibility of the heating modes is greatly improved to meet more cooking needs. In addition, when a second coil 3 on a certain winding rack 5 malfunctions, the second coil 3 on that winding rack 5 can be disassembled and replaced individually, greatly reducing maintenance costs and difficulty.

[0056] It should be noted that this utility model does not limit the contact method between the external fixing part 62 and the winding frame 5, which can be one of the following embodiments:

[0057] Implementation method 1: In this embodiment, there is no connection between the external fixing part 62 and the winding frame 5, and the two only form a contact force through contact.

[0058] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, one of the outer fixing part 62 and the winding frame 5 is provided with a protruding abutting part 51, and the other is provided with a mating groove 623. The abutting part 51 can be inserted and mated with the mating groove 623 so that the outer fixing part 62 and the winding frame 5 abut against and press the second coil 3.

[0059] By engaging the abutment part 51 and the mating groove 623, not only can the outer fixing part 62 and the winding frame 5 form an abutment, but the abutment position is also more stable. This allows the magnetic strip frame 6 to apply a uniform and stable abutment force to the winding frame 5, preventing the second coil 3 from loosening and also preventing slippage between the magnetic strip frame 6 and the winding frame 5 at the abutment position. In addition, during the assembly of the magnetic strip frame 6, the abutment part 51 and the mating groove 623 can be used for positioning, thereby improving the accuracy of the installation position and angle of the magnetic strip frame 6. This ensures that the magnetic component has good stability and enhances the magnetic field effect, while the magnetic strip frame 6 also provides a good limiting effect on the first coil 2 and the second coil 3.

[0060] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, the abutting part 51 is an abutting post provided on the winding frame 5 and extending toward the magnetic strip frame 6. The outer fixing part 62 is provided with an annular rib 621 on the side facing the abutting post. The annular rib 621 forms a mating groove 623. The abutting post extends into the annular rib 621 to achieve insertion and mating.

[0061] Of course, the abutment part 51 can also be provided on the outer fixing part 62, and the corresponding mating groove 623 can be provided on the winding frame 5. There is no limitation here.

[0062] Furthermore, such as Figure 2 As shown, the winding frame 5 has a pressing position 53 and a plurality of pressing arms 52 extending outward from the pressing position 53, and an abutment portion 51 or a mating groove 623 is provided on the pressing position 53.

[0063] Multiple pressure arms 52 extend outward from the pressing position 53. The second coil 3 is wound between the pressure arms 52 and the disc body 1. The pressing position 53 is located between the multiple pressure arms 52. Therefore, when the pressing position 53 is abutted by the outer fixing part 62, the abutting force can be evenly distributed to each pressure arm 52, thereby applying a uniform pressing force to the second coil 3 in the circumferential direction, keeping the second coil 3 regular, and preventing the second coil 3 from becoming loose locally due to uneven force.

[0064] Specifically, such as Figure 2 As shown, multiple pressure arms 52 extend radially outward from the pressing position 53, and the extension length of each pressure arm 52 may be different or the same. Alternatively, the pressure arms 52 may be configured with other structures as needed, as long as the pressing position 53 is located between each pressure arm 52.

[0065] Implementation Method Two: In this implementation method, as follows Figure 1 , Figure 4 As shown, a fixing post 622 is provided between the outer fixing part 62 and the winding frame 5. The magnetic strip frame 6 is fixedly connected to the winding frame 5 through the fixing post 622 so that it abuts against the winding frame 5 under the action of fixing force to press the second coil 3.

[0066] The external fixing part 62 is fixedly connected to the winding frame 5 via the fixing post 622, thereby forming a stable pressing force on the winding frame 5 under the action of pre-tightening force to limit the second coil 3. At the same time, the fixing of the external fixing part 62 to the winding frame 5 can also improve the fixing effect of the magnetic strip frame 6, making the relative position of the magnetic strip frame 6 and the disk body 1 more stable. This makes the strengthening and stabilizing effect of the magnetic component on the magnetic field, as well as the limiting effect of the magnetic strip frame 6 on the first coil 2 and the second coil 3, more stable, and prevents the magnetic strip frame 6 from shaking relative to the disk body 1.

[0067] Preferably, such as Figure 1 , Figure 4 , Figure 5 As shown, the fixing post 622 is located on the outer fixing part 62 and extends towards the winding frame 5. The magnetic strip frame 6 also has a fixing hole 624 corresponding to the fixing post 622. The fixing post 622 and the winding frame 5 are fastened together by fasteners such as screws passing through the fixing hole 624. Alternatively, a nut can be tightened on the other side of the winding frame 5 to achieve a fixed connection between the two. The fastener connection enhances the overall structural stability, making the magnetic strip frame 6 and the disk body 1 a stable whole and reducing the shaking and displacement between components. On the other hand, this connection method facilitates fine-tuning of the relative position of the magnetic strip frame 6 and the disk body 1 during installation, ensuring precise matching of each component and improving assembly accuracy. In addition, during equipment operation, the fastener 7 can effectively distribute stress, avoid excessive local stress, and extend the service life of the equipment.

[0068] In one embodiment, the disk body 1 includes a body 16 and a coil support 17, and the body 16, the coil support 17 and the magnetic strip frame 6 are fixed together by fasteners 7.

[0069] The above two implementation methods can be implemented separately or in combination. For example, a fixing post 622 is provided between the outer fixing part 62 and the winding frame 5 to fix them together, and an abutment part 51 is also provided for contact and contact. Preferably, as shown in the figure... Figure 1 , Figure 4 , Figure 5 As shown, in the circumferential direction of the disk body 1, the fixing post 622 and the abutment part 51 are alternately arranged to form an abutment for each winding frame 5.

[0070] As a preferred embodiment of this utility model, such as Figure 1 , Figure 2As shown, the bottom wall 11 is provided with a pressure rib 15, and the first coil 2 is wound between the pressure rib 15 and the bottom wall 11. The pressure rib 15 is arranged at intervals along the circumference of the disc body 1, and the magnetic strip mounting part 63 is staggered vertically with the pressure rib 15.

[0071] The magnetic strip mounting part 63 and the wire clamping rib 15 are staggered. The first coil 2 is limited not only by the wire clamping rib 15 but also by the magnetic strip mounting part 63, and the clamping positions are dispersed, thereby improving the clamping effect on the first coil 2 in the circumferential direction and keeping the first coil 2 regular. At the same time, it ensures that the magnetic field generated by the magnetic component on the magnetic strip mounting part 63 can effectively function, while the wire clamping rib 15 can also stabilize the winding, improving the overall performance.

[0072] Furthermore, such as Figure 1 , Figure 4 , Figure 5 As shown, there are multiple magnetic strip mounting parts 63, which are spaced apart along the axial direction of the disc body 1. A fixing rib 65 is provided between two adjacent magnetic strip mounting parts 63. The fixing rib 65 is connected to the magnetic strip mounting part 63, and the fixing rib 65 abuts against the wire pressing rib 15 to press the first coil 2.

[0073] The magnetic strip mounting part 63 can not only directly apply pressure to limit the first coil 2, but also indirectly apply pressure to the first coil 2 by pressing the wire pressing rib 15 through the fixing rib 65. This allows the magnetic strip mounting part 63 and the wire pressing rib 15 to firmly press the first coil 2 onto the surface of the disk body 1, improving the limiting effect on the first coil 2. In addition, the fixing rib 65 connects the various magnetic strip mounting parts 63, which also serves to strengthen the structure, improve the structural strength of the magnetic strip mounting parts 63, and reduce the risk of deformation or breakage of the magnetic strip mounting parts 63.

[0074] The fixing rib 65 and the external fixing part 62 can also enhance the overall rigidity of the magnetic strip frame 6 and reduce deformation.

[0075] Preferably, such as Figure 1 As shown, the pressure ribs 15 and the magnetic strip mounting parts 63 extend radially outward from the center of the disc body 1. In the circumferential direction of the disc body 1, the pressure ribs 15 and the magnetic strip mounting parts 63 are alternately arranged.

[0076] In a preferred embodiment, such as Figure 4 , Figure 5 As shown, the edge of the inner fixing part 61 is provided with a flange 612 extending toward the bottom wall 11. One end of the magnetic strip mounting part 63 is fixed to the flange 612. The flange 612 is provided with a relief groove 613 between two adjacent magnetic strip mounting parts 63 to avoid the pressure rib 15.

[0077] The magnetic strip mounting portion 63 extends radially outward from the inner fixing portion 61 and is fixed to the flange 612. This increases the connection area between the magnetic strip mounting portion 63 and the inner fixing portion 61, thereby improving the fixing strength and effect between the magnetic strip mounting portion 63 and the inner fixing portion 61. At the same time, the clearance groove 613 allows the pressure rib 15 to pass through, making the assembly of the magnetic strip frame 6 and the disc body 1 more compact, which helps to reduce the overall height of the electromagnetic heating device and make the whole device thinner and lighter.

[0078] like Figure 4 , Figure 5 As shown, the other end of the magnetic strip mounting part 63 is connected to the external fixing part 62.

[0079] Specifically, such as Figure 3 , Figure 4 , Figure 5 As shown, the bottom wall 11 of the disk body 1 has an opening at its center, and the flange 612 can cooperate with the opening to play a role in installation and positioning, so that the magnetic strip holder 6 and the disk body 1 remain coaxial. At the same time, the center of the inner fixing part 61 is also provided with a center flange 611, and the center flange 611 flange 612 can cooperate with the NTC compression spring to ensure its normal operation.

[0080] like Figures 3 to 5 As shown, the center of the disc body 1 is also provided with a mounting post 161 and a drain hole 162. The inner fixing part 61 is provided with a mounting hole 614 corresponding to the mounting post 161 and a water passage hole 615 corresponding to the drain hole 162. The connector passes through the mounting hole 614 and is tightly connected to the mounting post 161 of the disc body 1 to ensure that the water passage hole 615 and the drain hole 162 are aligned and connected.

[0081] Preferably, such as Figure 1 , Figure 4 , Figure 5 As shown, there are multiple magnetic strip mounting parts 63, and at least some of the magnetic strip mounting parts 63 are provided with hanging wire structures 64.

[0082] During the coil winding process, the hanging structure 64 can tightly connect the two ends of the winding, effectively preventing the coil from loosening and falling off during winding, and ensuring winding stability. Furthermore, it significantly improves coil reliability after winding is complete, keeping the coil taut and preventing it from loosening, thus ensuring the normal operation of the electromagnetic heating device.

[0083] Specifically, the hanging structure 64 is a hook that bends toward the disc body 1.

[0084] In a preferred embodiment of this utility model, such as Figure 1 As shown, the disk body 1 also includes a side wall 13, an arc-shaped portion 12 located between the bottom wall 11 and the side wall 13, the side wall 13 is provided with a winding groove 14, and a third coil 4 is wound in the winding groove 14.

[0085] The first coil 2 on the bottom wall 11 corresponds to the bottom of the pot, thereby heating the bottom of the pot. The third coil 4 on the side wall 13 corresponds to the side of the pot, thereby heating the side of the pot. The second coil 3 on the arc-shaped part 12 corresponds to the transition section between the bottom and the side of the pot or the side of the pot, thereby heating this area. This achieves multi-directional and multi-angle heating of the pot, making the heat distribution on the bottom, side and the transition area between the two of the pot more uniform, greatly improving the uniformity and heating effect of the pot, and improving the heating efficiency.

[0086] Preferably, such as Figure 3 As shown, the disk body 1 includes a main body 16 and a coil support 17. The third coil 4 is wound on the main body 16, the winding frame 5 is fixed to the coil support 17, and the first coil 2 and the second coil 3 are wound on the coil support 17.

[0087] The disk body 1 has a split structure. After the first coil 2, the second coil 3, and the third coil 4 are wound separately, the main body 16 and the coil support 17 are assembled. During winding, the first coil 2, the second coil 3, and the third coil 4 can be wound independently, making the winding operation simpler and more convenient. Moreover, each area can be wound simultaneously, greatly improving winding efficiency.

[0088] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0089] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0090] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An electromagnetic heating device comprising a disc body, characterized in that, the disc body comprises a bottom wall and an arc-shaped portion surrounding the periphery of the bottom wall, the bottom wall is provided with a first coil, the electromagnetic heating device further comprises a plurality of winding frames arranged at intervals in the circumferential direction of the arc-shaped portion, the winding frames and the arc-shaped portion are provided with a second coil, the electromagnetic heating device further comprises a magnetic strip frame, the magnetic strip frame comprises an inner fixed portion, an outer fixed portion surrounding the periphery of the inner fixed portion, and a magnetic strip mounting portion provided between the inner fixed portion and the outer fixed portion, the magnetic strip mounting portion abuts against the first coil, and the outer fixed portion abuts against the winding frame.

2. The electromagnetic heating device according to claim 1, characterized in that, one of the outer fixed portion and the winding frame is provided with a protruding abutting portion, and the other is provided with a matching groove, the abutting portion can be inserted and matched with the matching groove to make the outer fixed portion and the winding frame abut and press the second coil.

3. The electromagnetic heating device according to claim 2, characterized in that, the winding frame has a pressing position and a plurality of wire pressing arms extending outward from the pressing position, and the abutting portion or the matching groove is arranged at the pressing position.

4. The electromagnetic heating device according to claim 1 or 2, characterized in that, a fixing column is arranged between the outer fixed portion and the winding frame, the magnetic strip frame is fixedly connected with the winding frame through the fixing column to abut against the winding frame under the action of a fixing force to press the second coil.

5. The electromagnetic heating device according to claim 1, characterized in that, the bottom wall is provided with a wire pressing rib, the first coil is arranged between the wire pressing rib and the bottom wall, the wire pressing ribs are arranged at intervals in the circumferential direction of the disc body, and the magnetic strip mounting portion is arranged in a staggered manner above and below the wire pressing rib.

6. The electromagnetic heating device according to claim 5, characterized in that, the magnetic strip mounting portion is a plurality of and arranged at intervals in the axial direction of the disc body, a fixing rib is arranged between adjacent two magnetic strip mounting portions, the fixing rib is connected with the magnetic strip mounting portion, and the fixing rib abuts against the wire pressing rib to press the first coil.

7. The electromagnetic heating device according to claim 5, characterized in that, an edge of the inner fixed portion is provided with a turned edge extending towards the bottom wall, one end of the magnetic strip mounting portion is fixed to the turned edge, and the turned edge is provided with an avoiding groove between adjacent two magnetic strip mounting portions for avoiding the wire pressing rib.

8. The electromagnetic heating device according to claim 1, characterized in that, the magnetic strip mounting portion is a plurality of, and at least part of the magnetic strip mounting portion is provided with a wire hanging structure.

9. The electromagnetic heating device according to claim 1, characterized in that, the disc body further comprises a side wall, the arc-shaped portion is located between the bottom wall and the side wall, and the side wall is provided with a wire winding groove, and the third coil is arranged in the wire winding groove.

10. The electromagnetic heating device according to claim 9, characterized in that, The disc comprises a body and a coil support, the third coil is wound around the body, the winding support is fixed to the coil support, and the first coil and the second coil are wound around the coil support.

Images