A coil assembly and an electric rice cooker

Abstract

The utility model discloses a coil assembly and electric rice cooker relates to kitchen utensil field, including from top to bottom the coil tray frame, winding coil and fixed bolster that are stacked in proper order, winding coil is around the coil tray frame lower surface, the fixed bolster includes a plurality of independent processing forming's sub support, a plurality of sub support is radially distributed on the coil tray frame, and the sub support is fixed on the coil tray frame to fix winding coil. The fixed bolster in the utility model is a plurality of sub supports of split setting, and it is not easy to deform.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils, specifically to a coil assembly and a rice cooker. Background Technology

[0002] Rice cookers are common cooking appliances in kitchens. Currently, rice cookers mainly use two heating methods: heating plate heating and electromagnetic induction heating. Heating plate heating converts electrical energy into heat energy by heating the bottom plate, then transfers the heat to the pot and food. Electromagnetic induction heating, on the other hand, uses an alternating magnetic field generated by an electromagnetic coil to create eddy currents at the bottom of the inner pot, generating heat and thus heating the food. Electromagnetic heating rice cookers have advantages such as high heating power, fast heating, and even heating, making them increasingly popular with consumers.

[0003] In electromagnetic heating rice cookers, an integrated coil fixing device is often used to ensure stable and efficient coil operation. Especially in large commercial rice cookers, due to their large cooking capacity, more powerful heating is required, so the size of the integrated coil fixing device usually needs to be increased. However, the larger the integrated coil fixing device, the easier it is to deform after molding. Utility Model Content

[0004] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a coil assembly and a rice cooker, with the fixing bracket consisting of multiple separately arranged sub-brackets, making it less prone to deformation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A coil assembly includes a coil frame, a winding coil, and a fixing bracket stacked sequentially from top to bottom. The winding coil is wound on the lower surface of the coil frame. The fixing bracket includes multiple independently machined sub-brackets, which are radially distributed on the coil frame. The sub-brackets are fixed to the coil frame to fix the winding coil.

[0007] In this application, the coil holder, winding coil, and fixing bracket are stacked, and the fixing bracket fixes the winding coil to the coil holder. The fixing bracket includes multiple independently machined sub-brackets arranged radially at intervals. That is, the sub-brackets in this application are small, independent entities, which reduces stress concentration in existing integrated coil fixing devices. Therefore, the sub-brackets are less prone to deformation, ensuring the winding coil is fixed to the coil holder, thereby guaranteeing the stability and reliability of the winding coil. Furthermore, multiple independently machined sub-brackets reduce the amount of raw materials used, thus lowering the product's material cost. Simultaneously, compared to large-sized integrated fixing devices, the small-sized sub-brackets have a lower scrap rate during molding, further reducing material waste. In addition, the small-sized sub-brackets occupy less space during transportation and storage, reducing logistics and warehousing costs. In addition, the structure is simplified after the fixed bracket is split into multiple sub-brackets, which also simplifies the mold structure used to manufacture the sub-brackets, reducing manufacturing costs. Furthermore, the simplified mold is subjected to more uniform stress during use, avoiding localized wear and damage caused by stress concentration and extending the service life of the mold.

[0008] Optionally, the coil holder includes a bottom wall and a side wall, and the sub-support includes a first connecting part and a second connecting part, the first connecting part being disposed on the bottom wall and the second connecting part being disposed on the side wall.

[0009] In practical applications, the coil holder may have curved surfaces, arcs, or specific shape profiles. The second connecting part is used to mate with the side wall of the coil holder, and the first connecting part is used to mate with the bottom wall of the coil holder, so as to better adapt to the complex shape of the coil holder and improve the stability of the connection.

[0010] Optionally, the first connecting part has a first mounting groove on the side near the coil frame, and the second connecting part has a second mounting groove on the side near the coil frame. Both the first mounting groove and the second mounting groove are used to accommodate magnetic strips.

[0011] The magnetic strip serves to concentrate magnetic lines of force, thereby improving heating efficiency. The first and second mounting slots provide space for the magnetic strip, ensuring that it is mounted on the sub-support and thus maintaining a stable magnetic field distribution.

[0012] Optionally, the first mounting groove is located in the middle of the first connecting portion and extends radially along the bottom wall; two second mounting grooves are configured, and the two second mounting grooves are symmetrically arranged on both sides of the second connecting portion along the length direction of the first mounting groove.

[0013] By rationally arranging the positions and numbers of the first and second mounting slots, the magnetic strip can better guide the magnetic field, reduce the loss of magnetic field energy, and allow more magnetic field energy to act on the heated object, thereby shortening the heating time and improving energy utilization efficiency. In addition, the symmetrically distributed second mounting slots and the first mounting slots extending along the length of the first connection portion can make the magnetic field more uniformly distributed within the heating area.

[0014] Optionally, the first mounting groove has a first opening on the side facing the coil frame, and the width of the first opening is smaller than the width of the magnetic strip to stop the magnetic strip in the first mounting groove; the second mounting groove has a second opening on the side facing the coil frame, and the width of the second opening is smaller than the width of the magnetic strip to stop the magnetic strip in the second mounting groove.

[0015] The widths of the first and second slots are both smaller than the width of the magnetic strip to limit the magnetic strip and prevent it from falling out of the mounting slot when subjected to external force. This ensures that the magnetic strip is always in the correct mounting position, maintains a stable magnetic field distribution, and guarantees the normal operation and heating performance of the equipment.

[0016] The first mounting groove has a first opening at the end away from the second connecting part, and the width of the first opening is adapted to the width of the magnetic strip; the second mounting groove has a second opening at the end away from the first connecting part, and the width of the second opening is adapted to the width of the magnetic strip.

[0017] Because the width of the first and second slots is smaller than the width of the magnetic strip, the first and second slots cannot be used to install the magnetic strip. However, the first and second openings provide clear installation entrances for the magnetic strip, allowing operators to quickly and accurately insert the magnetic strip into the installation slot, improving installation efficiency and reducing installation difficulty and error rate.

[0018] Optionally, the first connecting part and the second connecting part are integrally formed.

[0019] The one-piece molded first and second connecting parts have higher structural strength and rigidity, enabling them to withstand greater external forces, reduce deformation and damage caused by external forces, and extend the service life of the coil assembly. Furthermore, the one-piece molding process reduces the number of parts and assembly steps, lowers manufacturing costs and production cycles, and improves product quality and reliability.

[0020] Optionally, the sub-support is provided with a mounting base, and the coil frame is provided with a mounting post. The mounting base and the mounting post are positioned in a one-to-one correspondence and are connected by fasteners.

[0021] The preload provided by the fasteners connects the mounting base and the mounting post, forming a stable whole between the sub-support and the coil tray frame. This resists vibration and impact during equipment operation, reducing the risk of loosening or detachment of the connection. Furthermore, using fasteners to connect the mounting base and the mounting post is simple and quick. When it is necessary to replace the sub-support or perform maintenance, simply loosen the fasteners to remove the sub-support from the coil tray frame.

[0022] Optionally, the winding coil includes an inner coil and an outer coil spaced apart from the inner coil, the outer coil being ring-shaped and surrounding the outer periphery of the inner coil.

[0023] The spacing between the inner and outer coils reduces the overlap of their magnetic fields. Furthermore, the combination of inner and outer coils results in a more uniform spatial distribution of the magnetic field, covering a wider area and reducing uneven heating caused by magnetic field inhomogeneity, thus improving heating quality.

[0024] Furthermore, this utility model also provides a rice cooker, including an inner pot and a coil assembly disposed below the inner pot, wherein the coil assembly includes any of the coil assemblies described above. The reasoning process for the beneficial effects of the rice cooker provided by this utility model and the aforementioned coil assemblies is similar, and will not be repeated here.

[0025] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the coil assembly in this utility model;

[0028] Figure 2 This is a schematic diagram of the neutron support and magnetic strip of this utility model;

[0029] Figure 3 This is a schematic diagram of the assembly of the neutron support and magnetic strip of this utility model;

[0030] Figure 4 for Figure 3 A structural diagram from another angle;

[0031] Figure 5 This is a schematic diagram of the coil assembly after the sub-support has been removed in this utility model;

[0032] Figure 6 This is a schematic diagram of the coil assembly in this utility model after the sub-support and winding coil are hidden.

[0033] Among them, 1. Coil tray; 11. Mounting post; 2. Winding coil; 21. Inner coil; 22. Outer coil; 3. Fixed bracket; 31. Sub-bracket; 311. First connecting part; 3111. First mounting groove; 3112. First opening; 3113. First stop plate; 312. Second connecting part; 3121. Second mounting groove; 3122. Second opening; 3123. Second stop plate; 313. Mounting seat; 32. Magnetic strip. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0035] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this patent. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0036] Example:

[0037] As 1 to Figure 4 As shown, this embodiment provides a coil assembly, including a coil frame 1, a winding coil 2, and a fixing bracket 3 stacked sequentially from top to bottom. The winding coil 2 is wound on the lower surface of the coil frame 1. The fixing bracket 3 includes multiple independently processed sub-brackets 31, which are radially distributed on the coil frame 1. The sub-brackets 31 are fixed on the coil frame 1 to fix the winding coil 2.

[0038] In this embodiment, the coil holder 1 is convex with a circular cross-section, providing a flat and stable mounting platform for the winding coil 2. In other embodiments, the coil holder 1 can also be planar, and its shape can be rectangular, irregular, etc. The coil holder 1 is the supporting structure of the coil assembly and is usually made of plastic. The winding coil 2 is wound on the surface of the coil holder 1 and is generally made of enameled wire. Enameled wire has good insulation and conductivity properties, which can ensure the safety and stability of the winding coil 2 when energized. The fixing bracket 3 is fixed to the coil holder 1 and is used to fix the winding coil 2 to prevent the winding coil 2 from shifting or loosening during operation. Specifically, the fixing bracket 3 includes multiple sub-brackets 31, which are arranged radially and spaced apart along the circumference of the coil holder 1. In this embodiment, the sub-brackets 31 are fixed to the coil holder 1 in a detachable manner by fasteners such as bolts and screws. In other embodiments, the sub-brackets 31 can also be fixed to the coil holder 1 by welding, gluing, etc.

[0039] When subjected to external forces, the stress concentration phenomenon of the integrated fixed bracket 3 is quite obvious. The external force will be concentrated on the weak part of the fixed bracket 3, making the weak part prone to deformation or even breakage. In this embodiment, multiple sub-brackets 31 are set separately and independently processed. When subjected to external forces, the external force will be distributed to each individual sub-bracket 31. The stress borne by each sub-bracket 31 is relatively small, avoiding excessive stress concentration in a single part, thereby reducing the risk of deformation.

[0040] like Figures 2 to 4 As shown, the coil holder includes a bottom wall and a side wall. The sub-support 31 includes a first connecting part 311 and a second connecting part 312. The first connecting part 311 is located on the bottom wall, and the second connecting part 312 is located on the side wall.

[0041] In this embodiment, the coil frame includes a bottom wall and side walls. A first connecting portion 311 is disposed on the bottom wall, and a second connecting portion 312 is disposed on the side wall. Specifically, the first connecting portion 311 is horizontally arranged, and the second connecting portion 312 is located on the outside and inclined upward relative to the first connecting portion 311, so as to adapt to and conform to the shape of the coil frame 1. In the prior art, the coil frame 1 is often not a simple planar structure; it may have curved surfaces, arcs, or specific shape contours. Therefore, the first connecting portion 311 and the second connecting portion 312 are constructed with a certain included angle to adapt to the shape of the coil frame 1. It should be noted that the second connecting portion 312 is inclined upward relative to the first connecting portion 311 when the rice cooker is in use. It can be understood that when the rice cooker is in an inverted state, the second connecting portion 312 becomes inclined downward relative to the first connecting portion 311. The horizontal first connecting portion 311 provides a stable mounting reference surface for the sub-support 31, ensuring that the sub-support 31 remains stable during installation and avoiding the impact on the stability of the overall structure due to tilting or shaking. At the same time, the horizontal setting makes it easy to connect with common installation surfaces, reducing installation difficulty and cost.

[0042] The first connecting part 311 has a first mounting groove 3111 on the side near the coil frame 1, and the second connecting part 312 has a second mounting groove 3121 on the side near the coil frame 1. Both the first mounting groove 3111 and the second mounting groove 3121 are used to accommodate the magnetic strip 32.

[0043] In this embodiment, the first mounting slot 3111 and the second mounting slot 3121 provide accommodating space for the magnetic strip 32, ensuring that the magnetic strip 32 is mounted on the sub-support 31. During equipment operation, due to factors such as vibration and temperature changes, the magnetic strip 32 is prone to displacement or loosening. The mounting slots ensure that the magnetic strip 32 is always in the correct position, thereby maintaining a stable magnetic field distribution. When the winding coil 2 is connected to a high-frequency AC power supply, a magnetic field is generated around it according to the principle of electromagnetic induction. The magnetic field diffuses outward from the winding coil 2 as the center. The inner pot is made of magnetically conductive material, and the magnetic field interacts with the inner pot of the rice cooker, causing eddy currents to be generated inside the inner pot, thereby converting electrical energy into heat energy to heat the food in the inner pot. The magnetic strip 32 in the coil assembly plays the role of concentrating magnetic lines of force to improve heating efficiency. In this embodiment, the multiple sub-supports 31 are evenly distributed to ensure uniform magnetic field action, achieving a uniform heating effect and stable electrical performance. Of course, in other embodiments, the multiple sub-supports 31 can also be unevenly distributed. For example, when a specific area needs to be heated in a focused manner, the sub-supports 31 can be densely arranged in that area to enhance the magnetic field strength and heating effect; while in areas where heating requirements are not high, the number of sub-supports 31 can be appropriately reduced to achieve a reasonable distribution. Further details will not be elaborated here.

[0044] The first mounting groove 3111 is located in the middle of the first connecting part 311 and extends radially along the bottom wall; two second mounting grooves 3121 are configured, and the two second mounting grooves 3121 are symmetrically arranged on both sides of the second connecting part 312 along the length direction of the first mounting groove 3111.

[0045] In this embodiment, the first mounting groove 3111 is located in the middle of the first connecting portion 311 and extends radially along the bottom wall, so that the magnetic strip 32 forms a relatively uniform magnetic field in the horizontal direction. The second connecting portion 312 is inclined upward relative to the first connecting portion 311, and the two second mounting grooves 3121 are symmetrically distributed on both sides of the second connecting portion 312 along the length direction of the first mounting groove 3111, so that the magnetic strip 32 is symmetrically arranged in the inclined direction, further optimizing the magnetic field distribution, so that the magnetic field can better adapt to the shape of the coil frame 1, reducing the magnetic field dead zone, ensuring that the magnetic field can act uniformly on the heated object, and improving the heating effect. Specifically, both the first mounting groove 3111 and the second mounting groove 3121 are elongated grooves. The line connecting the center points of the two second mounting grooves 3121 and one first mounting groove 3111 forms an isosceles triangle. In other embodiments, the first mounting groove 3111 can also be replaced by multiple segmented small mounting grooves, evenly distributed on the first connecting portion 311, instead of extending continuously along the length direction. Alternatively, the number and position of the second mounting slots 3121 can be adjusted, for example, by increasing or decreasing the number of the second mounting slots 3121, or by changing their symmetrical distribution, such as by adopting an asymmetrical distribution, to adapt to different coil rack 1 shapes and heating requirements.

[0046] The first mounting groove 3111 has a first opening on the side facing the coil frame 1. The width of the first opening is smaller than the width of the magnetic strip 32 to stop the magnetic strip 32 in the first mounting groove 3111. The second mounting groove 3121 has a second opening on the side facing the coil frame 1. The width of the second opening is smaller than the width of the magnetic strip 32 to stop the magnetic strip 32 in the second mounting groove 3121.

[0047] In this embodiment, the width of the first slot is smaller than the width of the magnetic strip 32 to stop the magnetic strip 32 in the first mounting slot 3111, and the width of the second slot is smaller than the width of the magnetic strip 32 to stop the magnetic strip 32 in the second mounting slot 3121. The first mounting slot 3111 is located in the middle of the first connecting portion 311 and extends along its length. A first stop plate 3113 is also provided at the first slot. The first stop plate 3113 is perpendicular to the side wall of the first mounting slot 3111 and extends toward the axis of the first mounting slot 3111, forming a blocking structure for the magnetic strip 32 to further block the magnetic strip 32. When the magnetic strip 32 is inserted into the first mounting slot 3111, the first stop plate 3113 can restrict the movement of the magnetic strip 32 in the direction perpendicular to the bottom surface of the mounting slot, preventing the magnetic strip 32 from coming out. Two second mounting slots 3121 are configured, symmetrically arranged on both sides of the second connecting portion 312 along the length direction of the first mounting slot 3111. Each second mounting slot 3121 has a second stop plate 3123 at its second opening. The second stop plate 3123 is perpendicular to the side wall of the second mounting slot 3121 and extends toward the axis of the second mounting slot 3121. Similarly, the second stop plate 3123 can restrict the movement of the magnetic strip 32 in the direction perpendicular to the bottom surface of the slot within the second mounting slot 3121, ensuring that the magnetic strip 32 will not come out of the second mounting slot 3121.

[0048] The first mounting groove 3111 has a first opening 3112 at one end away from the second connecting part 312, and the width of the first opening 3112 is adapted to the width of the magnetic strip 32; the second mounting groove 3121 has a second opening 3122 at one end away from the first connecting part 311, and the width of the second opening 3122 is adapted to the width of the magnetic strip 32.

[0049] In this embodiment, since the widths of the first and second slots are smaller than the width of the magnetic strip 32, the first and second slots cannot be used to install the magnetic strip 32. A first opening 3112 is provided at the end of the first mounting slot 3111 away from the second connecting portion 312, and the width of the first opening 3112 is adapted to the width of the magnetic strip 32, so that the magnetic strip 32 can be smoothly inserted into the first mounting slot 3111 through the first opening 3112. The width of the first opening 3112 matches the width of the magnetic strip 32, allowing the magnetic strip 32 to be tightly inserted into the first mounting slot 3111, and the magnetic strip 32 to remain stable within the first mounting slot 3111, without easily shaking. The magnetic strip 32 extends along its length within the first mounting slot 3111, forming a uniform magnetic field in the horizontal direction, allowing the magnetic field to better cover the corresponding area of ​​the coil holder 1. Similarly, the width of the second opening 3122 at the end of the second mounting groove 3121 away from the first connecting portion 311 is adapted to the width of the magnetic strip 32, facilitating the insertion of the magnetic strip 32 into the second mounting groove 3121 through the second opening 3122. In other embodiments, the first opening 3112 and the second opening 3122 can also be elastic latch structures. The elastic latch is slightly narrower than the width of the magnetic strip 32 in its natural state. When the magnetic strip 32 is inserted, the elastic latch undergoes elastic deformation, allowing the magnetic strip 32 to pass through smoothly. After insertion, the elastic latch returns to its original shape, securing the magnetic strip 32 to further improve the stability of the magnetic strip 32 installation.

[0050] The first connecting part 311 and the second connecting part 312 are integrally formed.

[0051] In this embodiment, the first connecting portion 311 and the second connecting portion 312 can be an integral structure. In other embodiments, the first connecting portion 311 and the second connecting portion 312 can also be separate structures. For example, the first connecting portion 311 and the second connecting portion 312 can be manufactured separately and then assembled by welding, bolting, or other methods. Alternatively, the first connecting portion 311 and the second connecting portion 312 can be provided with plug-in structures, such as slots and pins, and connected together by plugging.

[0052] like Figures 2 to 6 As shown, a mounting base 313 is provided on the sub-support 31, and a mounting post 11 is provided on the coil rack 1. The mounting base 313 and the mounting post 11 are in one-to-one correspondence and are connected by fasteners.

[0053] In this embodiment, the first connecting part 311 and the second connecting part 312 are provided with mounting bases 313, and the coil frame 1 is provided with mounting posts 11 that correspond to each other in position. Multiple mounting posts 11 are distributed circumferentially along the bottom wall of the coil frame 1. The two can be connected by fasteners. During the tightening process, the fasteners (such as bolts, screws, etc.) will generate preload force, which will combine the mounting base 313 and the mounting posts 11, thereby fixing the sub-support 31 on the coil frame 1 and preventing the sub-support 31 from shifting or falling off.

[0054] In other embodiments, a snap-fit ​​structure can be provided on the mounting base 313 of the first connecting part 311 and the second connecting part 312, and a corresponding slot can be provided on the mounting post 11 of the coil disc. During installation, the snap-fit ​​on the mounting base 313 is aligned with the slot on the mounting post 11, and the connection is achieved by pressing firmly; during disassembly, the snap-fit ​​is disengaged from the slot by using a specific tool or operation method.

[0055] like Figure 5 As shown, the winding coil 2 includes an inner coil 21 and an outer coil 22 spaced apart from the inner coil 21. The outer coil 22 is ring-shaped and surrounds the outer periphery of the inner coil 21.

[0056] In this embodiment, after the winding coil 2 is energized, the magnetic fields will cancel each other out and overlap. Therefore, a certain distance is set between the inner coil 21 and the outer coil 22 to reduce the overlap of the magnetic fields between the inner coil 21 and the outer coil 22. It should be noted that the distance between the inner coil 21 and the outer coil 22 should be understood as the vertical distance between the inner edge of the outer coil 22 and the outer edge of the inner coil 21. Specifically, the coil frame 1 includes an upper positioning rib on the side wall and a lower positioning rib on the bottom wall. The inner coil 21 is disposed on the lower positioning rib, and the outer coil 22 is disposed on the upper positioning rib. In addition, the inner coil 21 is arranged around the outside of the mounting post 11 on the bottom wall to avoid the mounting post 11, and the outer coil 21 is arranged around the inside of the mounting post 11 on the side wall to avoid the mounting post 11, so as to avoid interference with the mounting post 11 during winding.

[0057] In addition, this embodiment also provides a rice cooker, including an inner pot and a coil assembly disposed below the inner pot, the coil assembly including any of the aforementioned coil assemblies.

[0058] In a rice cooker, when alternating current passes through the coil assembly, an alternating magnetic field is generated around the coil according to the law of electromagnetic induction. The inner pot is usually made of ferromagnetic material. When the inner pot is placed in the alternating magnetic field, an induced current (eddy current) is generated inside the inner pot. Because the inner pot has a certain resistance, the induced current does work against the resistance as it flows through the inner pot, converting electrical energy into heat energy, thereby heating the food in the inner pot.

[0059] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A coil assembly comprising a coil frame, a winding coil, and a fixing bracket stacked sequentially from top to bottom, wherein the winding coil is wound on the lower surface of the coil frame, characterized in that, The fixing bracket includes multiple independently processed sub-brackets, which are radially distributed on the coil frame. The sub-brackets are fixed to the coil frame to fix the winding coil.

2. The coil assembly according to claim 1, characterized in that, The coil frame includes a bottom wall and a side wall, and the sub-support includes a first connecting part and a second connecting part, the first connecting part being disposed on the bottom wall and the second connecting part being disposed on the side wall.

3. The coil assembly according to claim 2, characterized in that, The first connecting part has a first mounting groove on the side near the coil frame, and the second connecting part has a second mounting groove on the side near the coil frame. Both the first mounting groove and the second mounting groove are used to accommodate magnetic strips.

4. The coil assembly according to claim 3, characterized in that, The first mounting groove is located in the middle of the first connecting part and extends radially along the bottom wall; two second mounting grooves are configured, and the two second mounting grooves are symmetrically arranged on both sides of the second connecting part along the length direction of the first mounting groove.

5. The coil assembly according to claim 3, characterized in that, The first mounting slot has a first opening on the side facing the coil frame, and the width of the first opening is smaller than the width of the magnetic strip to stop the magnetic strip in the first mounting slot; the second mounting slot has a second opening on the side facing the coil frame, and the width of the second opening is smaller than the width of the magnetic strip to stop the magnetic strip in the second mounting slot.

6. The coil assembly according to claim 5, characterized in that, The first mounting groove has a first opening at the end away from the second connecting part, and the width of the first opening is adapted to the width of the magnetic strip; the second mounting groove has a second opening at the end away from the first connecting part, and the width of the second opening is adapted to the width of the magnetic strip.

7. The coil assembly according to claim 2, characterized in that, The first connecting part and the second connecting part are integrally formed.

8. The coil assembly according to claim 1, characterized in that, The sub-support is provided with a mounting base, and the coil frame is provided with a mounting post. The mounting base and the mounting post are in one-to-one correspondence and are connected by fasteners.

9. The coil assembly according to any one of claims 1-7, characterized in that, The winding coil includes an inner coil and an outer coil spaced apart from the inner coil. The outer coil is ring-shaped and surrounds the outer periphery of the inner coil.

10. A rice cooker, comprising an inner pot and a coil assembly disposed below the inner pot, characterized in that, The coil assembly includes the coil assembly according to any one of claims 1 to 9.

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