Electromagnetic wire disc and electromagnetic heating electric cooker thereof

Abstract

The application discloses an electromagnetic wire disc, which comprises a disc body and a coil, and the coil is arranged on the disc body, and the disc body comprises a flat bottom, a vertical side, and an arc-shaped part connecting the bottom and the side, a plurality of wire holders are distributed on the arc-shaped part in the circumferential direction of the disc body, the coil is arranged on the wire holders, one coil is arranged on two or more wire holders to form a special-shaped coil, a wire blocking structure is arranged in the special-shaped coil, and part of the wire is wound in the area between adjacent wire holders through the wire blocking structure to form a heating area in the special-shaped coil. The application can improve the heating effect of the electromagnetic wire disc. The application further discloses an electromagnetic heating electric cooker with the electromagnetic wire disc.

Description

Technical Field

[0001] This application belongs to the field of kitchen appliance technology, specifically relating to an electromagnetic coil and its electromagnetic heating electric pot. Background Technology

[0002] In existing electromagnetic coil technology, when heating electric pots (such as rice cookers or electric pressure cookers), the heating coils are generally concentric windings with a ring-shaped distribution, resulting in a single path for rice and water to tumble, insufficient stirring, and a need to improve cooking quality.

[0003] Based on this, multi-zone heating coils have emerged, such as the patent with application number CN201922501532.4, which has multiple coil heating units distributed in a dispersed manner. However, this structure leads to poor heating effect in the central area, especially in the middle area of ​​the coil, where the heating effect is affected due to the small coverage area, thus requiring improvement.

[0004] Application content

[0005] This application provides an electromagnetic coil that improves the heating effect by controlling the coil distribution area through a wire-blocking structure.

[0006] The technical solution adopted in this application is as follows:

[0007] An electromagnetic coil includes a coil body and a coil wound on the coil body. The coil body includes a flat bottom, a vertical side, and an arc-shaped portion connecting the bottom and the side. Multiple winding frames are distributed along the circumference of the coil body on the arc-shaped portion. The coil is wound on the winding frames, and one coil is wound on two or more winding frames to form an irregular coil. The irregular coil is provided with a wire-blocking structure, and part of the wire is wound in the area between adjacent winding frames through the wire-blocking structure to form a heating zone within the irregular coil.

[0008] In this case, the conductors that are partially restricted by the wire-blocking structure have a predetermined gap with the conductors of the main body of the irregular coil.

[0009] In this case, a blank area is formed in the middle of the irregularly shaped coil, and the wire-blocking structure is disposed in the blank area.

[0010] In this case, the number of winding frames is twice the number of irregular coils, and one coil is wound on two winding frames to form an irregular coil.

[0011] In this case, the number of winding frames is 4-10.

[0012] In this case, a side coil is provided on the side of the disc body, a bottom coil is provided on the bottom, and the irregular coil is provided on the arc-shaped part.

[0013] In this case, the side coil is formed by winding it in a winding groove on the side of the disk body, and the bottom coil is fixed by a bottom winding frame.

[0014] In this case, the wire-blocking structure is either an integrally formed baffle on the wire reel, or a separate screw or fixing post fixed on the wire reel.

[0015] In this case, the preset gap is greater than the outer diameter of a wire.

[0016] This application also proposes an electromagnetic heating electric pot, including a pot body and an inner pot, wherein the inner pot is placed inside the pot body, the pot body includes a middle ring, a heat preservation cover and a base, and the aforementioned electromagnetic coil is fixed inside the pot body, wherein the middle ring is fixed to the electromagnetic coil to fix the heat preservation cover between the middle ring and the electromagnetic coil.

[0017] This application has the following beneficial effects:

[0018] 1. By setting multiple winding frames on the arc-shaped section, a coil can be wound on two or more winding frames to form an irregularly shaped coil, simplifying the winding process and expanding the coil's coverage area. By incorporating a wire-blocking structure within the irregularly shaped coil, some conductors are wound through the wire-blocking structure within the area between adjacent winding frames, allowing some conductors to cover the blank area in the center of the irregularly shaped coil. This ensures the coil is distributed as widely as possible in the winding dead zone, improving the problem of poor heating effect in the winding dead zone, enhancing heating uniformity, and improving the overall heating effect. Because the irregularly shaped coil is formed on the arc-shaped section, the arc-shaped heating coil on the arc section allows for more thorough tumbling and heating within the pot during heating.

[0019] 2. The wire-blocking structure is located in the area between multiple winding frames, which can make full use of the space of the arc section and has little impact on the winding of the coil. Because there are areas between the winding frames, when the coil is wound on two or more winding frames to form an irregular coil, there are blank areas in the middle. The wire-blocking structure allows some wires to enter the area, thereby improving the heating effect in this area. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of an electromagnetic coil according to one embodiment of this application. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of an electromagnetic coil according to one embodiment of this application. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of an electromagnetic coil according to one embodiment of this application;

[0024] Figure 4 This is an exploded view of an electromagnetic coil according to one embodiment of this application;

[0025] Figure 5 This is a schematic diagram of an electromagnetic heating electric pot according to one embodiment of this application;

[0026] Figure 6 This is a schematic diagram of an electromagnetic coil according to another embodiment of this application;

[0027] Figure 7 This is a top view of an electromagnetic coil according to another embodiment of this application.

[0028] in:

[0029] Plate body 100; coil 200; pot body 300; middle ring 301; heat preservation cover 302; base 303; inner pot 400;

[0030] Bottom 1; Winding rib 11; Reinforcing rib 111; Through hole 12;

[0031] Side part 2; Fixing part 21; Winding groove 22;

[0032] Arc-shaped part 3; winding frame 31; lower plate 311; upper plate 312; through hole 313; first conductor part 314; wire inlet groove 315; isolation gap 32; first screw post 33; connecting rib 331; second screw post 34; wire blocking structure 35; magnetic strip 36;

[0033] Extended gap 4; first gap 41; second gap 42. Detailed Implementation

[0034] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, refer to Figures 1-4 An electromagnetic coil for increasing heating area includes a coil body 100, a coil 200, and a winding section. The coil 200 is wound around the coil body 100 via the winding section. The coil body 100 includes a flat bottom 1, a vertical side 2, and an arc-shaped section 3 connecting the bottom and the side. The winding section is distributed on the bottom, the side, and the arc-shaped section. An expansion gap 4 is provided between adjacent coils located at the bottom, the arc-shaped section, and the side, with the expansion gap being 1cm-5cm. The winding section of the arc-shaped section includes multiple winding frames 31 distributed circumferentially around the coil body to form multiple heating coils.

[0036] It should be noted that, in this application, "coil" refers to a wire wound into a loop.

[0037] By incorporating coils 200 in the bottom, sides, and curved sections, the heating area of ​​the coil is expanded. An extension gap 4 of 1-5cm prevents overlapping heating and magnetic field interference, increasing the heating area within the limited coil coverage. Multiple dispersed winding frames 31 in the curved section 3 create multiple zones, further expanding the heating area. With these three combinations, for curved heating coils and conventional 4L rice cookers, the heating area can be increased by at least 12% without affecting the heating effect, provided the heating coil length remains the same. Specifically, when the extension gap is less than 1cm, the increase in heating area is limited; when the extension gap is greater than 5cm, the heating effect at the extension gap deteriorates. Therefore, an extension gap of 1-5cm is reasonable for this type of coil with coils in the bottom, sides, and curved sections. The extension gap refers to either a first gap 41 of 1-5cm between the coil at the bottom and the coil in the curved section, or a second gap 42 of 1-5cm between the coil in the curved section and the coil on the side.

[0038] Reference Figure 1 The bottom of the disk body is provided with a winding baffle 11. A winding gap is formed between the winding baffle 11 and the disk body, and the coil is confined between the winding baffle 11 and the disk body. There are multiple winding baffles 11, with 3-5 being optimal. One end of the winding baffle 11 is connected to the disk body, and the other end is suspended, forming an entrance for the coil to be wound. The winding baffle 11 can be integrally formed on the disk body, or it can be fixed to the disk body by screws or clips. The wire groove baffle 11 is distributed in a regular ring structure on the bottom plane of the disk body. The width of the winding groove is designed according to the diameter of commonly used wires, generally 0.5-1 mm wider than the wire diameter, to ensure that the wire can be smoothly inserted without lateral movement. In this embodiment, the winding baffle 11 is also provided with a reinforcing rib 111, which can improve the strength of the winding baffle 11 and prevent breakage.

[0039] Reference Figure 3 The bottom coil has two or more layers. The bottom 1 is the main heating area, and the heating effect is enhanced by two or more layers of coil. Because the bottom area is relatively small, even with two or more layers of coil, it will not consume too much wire.

[0040] Reference Figure 3 The bottom 1 has a through hole 12 at its center. The temperature sensor can pass through and be installed via the through hole 12. Screw posts or drainage holes are provided around the through hole 12. Drainage holes allow water to drain from the coil, preventing water accumulation. Screw posts can be used to secure other accessories, such as magnetic strip holders.

[0041] Reference Figure 1 The plurality of winding frames are provided with isolation gaps 32 between adjacent frames, and the isolation gaps 32 are no larger than the expansion gaps 4. The isolation gaps are relatively small, so that there are as many heating coils as possible in the entire arc-shaped area, thereby increasing the heating area with a limited number of coils. More specifically, the isolation gaps 32 are smaller than the expansion gaps 4, so that the bottom coil can be wound onto the winding frame 31 after passing through the expansion gaps 4.

[0042] Reference Figure 2 A fixing part 21 is provided between the side portion 2 and the arc-shaped portion 3, extending outward from the expansion gap 4. Multiple fixing parts 21 are distributed along the circumference of the coil, ranging from 3 to 5. This allows for full utilization of the coil space and facilitates fixing the coil to the machine body using the fixing parts 21. In this embodiment, the side coil is positioned higher than the fixing part 21. This prevents the side coil from sliding downward. Because there is an isolation gap 32 between the side coil and the arc-shaped portion coil, the fixing part 21 can be positioned precisely on this isolation gap 32, thus avoiding interference with the winding of either the side coil or the arc-shaped portion coil. Furthermore, the setting of the fixing part 21 allows for the use of existing coil mounting structures, eliminating the need for major adjustments to other structures of the rice cooker. Simply replacing the existing conventional coil with the one described in this application will still allow for compatibility and installation. The fixing part 21 may have screw holes or screw posts for fixing to other components such as the central ring or base using screws. Because this location is within the expansion gap and extends outward, the heating of the screw by the magnetic field can be minimized. The fixing part 21 in this embodiment has a positioning hole and a positioning post. The positioning hole can be used for positioning during installation, and the positioning post can be inserted into other positioning structures. Both the positioning hole and the positioning post can be used for screws to pass through or for fixing.

[0043] The winding frame 31 includes a lower plate 311 and an upper plate 312 that cooperates with the lower plate to form a winding groove. The lower plate 311 is fixed to the arc-shaped portion; or the lower plate and the arc-shaped portion are integrally formed; or as shown below. Figure 4 As shown, the lower plate 311 is integrally formed, and the upper plates are distributed and fixed to the lower plate or the arc-shaped part in a circumferential manner. The lower and upper plates cooperate to form a winding groove, facilitating the winding of the coil in the arc-shaped part and preventing the coil from coming off. That is, the lower plate 311 has three forms, one of which is as follows: Figure 4 As shown, the lower plate 311 is a one-piece molded structure. One type has the lower plate 311 corresponding to the upper plate 312, or multiple plates can be distributed separately. Another type has the lower plate 311 as part of the disk body. All three methods can achieve the purpose of forming winding grooves to confine the coil, as described in this application.

[0044] Reference Figure 4The arc-shaped portion 3 of the disc body has a first screw post 33, and the lower plate 311 has a through hole through which the first screw post 33 passes. The upper plate 312 has a second screw post 34. During installation, the lower plate 311 is first placed on the disc body, the first screw post 33 passes through the through hole, and then the upper plate 312 is placed on top of the lower plate 311, so that the second screw post is fitted onto the first screw post. Then, it is fixed by screwing. In this embodiment, the first and second screw posts are on the arc-shaped portion 3 but are arranged parallel to each other, i.e., both are vertically oriented. This facilitates the molding of the screw posts and the production of screws. In other embodiments, the upper plate 312 and the lower plate 311 can also be fixed by snap-fit ​​or hot pressing.

[0045] Reference Figure 4 The upper plate 312 is provided with through holes 313. The through holes 313 facilitate heat dissipation of the coil and allow for easy observation of the winding, enabling timely determination of whether a coil is wound below the upper plate 312. Multiple through holes 313 can be provided, distributed around the screw post. The upper plate 312 can also be composed of multiple blades, in which case the gaps between the blades can be considered as through holes 313. The outer periphery of the upper plate 312 is larger than the area covered by the coil below it, thus ensuring that the upper plate 312 can adequately confine the coil and prevent it from coming loose.

[0046] The lower plate 311 is provided with a wire inlet groove 315 for adjacent arc-shaped heating coils, and the wire inlet groove 315 extends at least to the outer periphery of the arc-shaped heating coil. The wire inlet groove 315 serves as a guide for the wire entering the arc-shaped coil. During actual winding, when the coil in one winding frame 31 is finished, the coil will enter the adjacent winding frame. The wire inlet groove 315 allows the wire to enter the center of the winding frame through the wire inlet groove 315 and be wound around the screw post from the inside out. Because the wire inlet section is located within the wire inlet groove 315, the small coil will not be disturbed by the wire inlet section when winding from the inside out. During the winding process from the inside out, the small coil can press down the wire inlet end, ensuring that the wire inlet section is difficult to come out of the wire inlet groove 315.

[0047] Reference Figure 4 The lower plate 311 is provided with a first guide section 314 between the bottom winding section and the arc-shaped winding section. The first guide section 314 allows the bottom coil to be introduced into the arc-shaped section. The first guide section 314 can be a wire groove or a limiting rib, etc., and its main function is to guide the coil. When the bottom coil is wound, upon entering the arc-shaped section, the first guide section 314 guides the coil to be accurately wound onto the winding frame 31.

[0048] The lower plate 311 is provided with a second guide section (not shown in the figure) between the arc-shaped winding section and the side winding section. The second guide section allows the arc-shaped coil to be introduced into the side section. The second guide section can be a wire groove or a limiting rib, etc., and its main function is to guide the coil. When the arc-shaped coil is wound, as it enters the side section 2, the second guide section guides the coil to be accurately wound onto the side section 2.

[0049] The depth of the winding frame 31 on the arc-shaped part 3 is the conductor diameter multiplied by the number of conductor strands, to prevent the conductor from jumping out of the groove of the arc-shaped part 3 during winding. For example, for a conductor with a diameter of 2 mm, with 14 turns of winding, the groove width is set to 2 mm, and the depth is 2 × 14 = 28 mm.

[0050] Specifically, the bottom 1 and side 2 of the disk body transition through an R-angle, meaning the transition area is an arc-shaped section. Multiple winding frames 31, such as 3-10, are arranged circumferentially around the arc-shaped section 3. These winding frames resemble small coils, and their shapes are adapted to the arc surface of the disk body. In other words, both the upper plate 312 and the lower plate 311 of the winding frames are adapted to the arc-shaped section of the disk body. The curvature of the inner arc surface of the upper plate 312 is essentially the same as the curvature of the inner arc surface of the lower plate 311 and the curvature of the arc-shaped section, ensuring a good fit. The outer arc diameter of the small coil can be 3-8cm, depending on the overall dimensions of the disk body and the winding layout design. The height of the small coil matches the height of the winding structure on the side wall of the large disk frame, and can also be 3-8cm.

[0051] Since this application involves setting a small coil at an arc-shaped portion, and this portion is not a regular plane, the winding post (i.e., the first screw post 33) below the winding frame 31 can be designed to better fit the small coil to this plane. In this embodiment, the cross-section of the winding post is larger at the bottom than at the top. "Top" refers to the direction near the bottom center of the coil, and "bottom" refers to the direction near the side of the coil. This is because when the coil is wound around the winding post, it will take on a shape similar to the cross-section of the winding post. Since this is the arc-shaped portion of the coil, the space below is obviously larger, while the space above is limited. Therefore, setting the cross-section of the winding post to be larger at the bottom better fits the winding here, so that the small coil at the winding frame 31 can also take on a shape larger at the bottom. For example, if the cross-section of the winding post is triangular, then one corner of the triangle is the top, and the bottom is one side. Alternatively, if it is trapezoidal, then the shorter side of the trapezoid is the top, and the longer side is the bottom. It is understandable that when the lower plate 311 is a separate accessory, the lower plate has through holes that match the cross-section of the winding post, allowing for installation and positioning of the lower plate without causing it to rotate. In this embodiment, refer to... Figure 3 The cross-section of the winding post consists of a cylinder (i.e., the first screw post) and a connecting rib 331.

[0052] Side portion 2 is provided with a winding groove. Taking a spiral winding groove as an example, the winding groove starts from the edge of the side portion of the disc and extends upwards in a spiral shape along the side wall to the top edge. The width and depth of the spiral groove are determined according to the number of winding layers and the diameter of the wire, ensuring that the wires can be tightly arranged without squeezing each other during the winding process. The width of the groove is similar to that of the bottom groove, 0.5-1 mm wider than the wire diameter, and the depth is also the wire diameter multiplied by the number of turns. The winding groove can be a continuous annular rib or multiple circumferentially distributed ribs, forming a winding groove locally in the circumferential direction. In other embodiments, side portion 2 may also not have a winding groove, and the coil is formed on the side by close winding.

[0053] The number of coils wound at the bottom is greater than the number of coils at the side or a single winding frame. Specifically, the bottom has two or more layers of coils, while the sides or curved sections have only one layer of coil, ensuring better heating effect per unit area at the bottom.

[0054] The bottom coil has more turns than the arc-shaped coil, which in turn has more turns than the side coil. Specifically, the bottom coil has 10-20 turns, the arc-shaped coil has 6-12 turns, and the side coil has 3-7 turns. Because the bottom coil (1) has a smaller diameter, more turns can be used for the same coil length to maximize the bottom heating effect. The arc-shaped coil (3) is wound using multiple winding frames (31), allowing for heating of multiple circumferential areas within the arc-shaped section.

[0055] During the winding process, a single wire can be wound from beginning to end to achieve coil winding at the bottom, arc-shaped section, and sides. Starting from the center of the bottom, the bottom coil is gradually wound and then exits from the outer periphery. Guided by the first wire section 314, the coil is accurately wound onto one of the winding frames 31. Similarly, winding begins from the center of the winding frame 31, gradually completing one winding frame 31. The wire then exits from the outer periphery and enters the center of the next adjacent winding frame through the wire inlet slot 315 to continue winding, gradually completing the winding of all winding frame coils on the arc-shaped section. Subsequently, guided by the second wire section, the coils enter the side section, gradually completing the winding of the side coils from low to high. A wire-clamping structure can be provided on the fixing part 21 to clamp the wire exit end and prevent the coil from coming off. Therefore, when multiple arc-shaped heating coils (i.e., small coils) are distributed on the arc-shaped section, and these multiple arc-shaped heating coils are part of the same coil winding group, the wire inlet slot 315 is an important structure during winding. The winding slots ensure that when a small coil is wound and exits from the outer periphery, it can enter the center of the next winding frame through the inlet slot 315 to continue winding from the center outwards. Because the winding slots are located inside the slots, they do not interfere with subsequent coils winding from the center outwards. When the bottom and arc-shaped sections belong to the same coil winding, the first conductor section 314 guides the coil accurately from the bottom onto one of the winding frames 31. When the arc-shaped section and the side section belong to the same coil winding, the second conductor section allows the coil winding to enter from the arc-shaped section and finally complete the winding.

[0056] In other embodiments, multiple coil windings may be provided, such as a bottom coil winding, a side coil winding, and one or more arc-shaped section coil windings. Alternatively, the bottom coil winding and the side coil windings may belong to the same coil winding, or the bottom coil winding and the arc-shaped section coil winding may belong to the same coil winding, or the side coil winding and the arc-shaped section coil winding may belong to the same coil winding. Here, "the same coil winding" should be understood as being wound from the same coil. By providing multiple coil windings, heating of the bottom, arc-shaped section, and sides can be controlled separately. For example, the bottom coil winding can be heated alternately with the arc-shaped section coil or the side coil winding to promote the tumbling of the food. Specifically, when the bottom coil winding is heated, the middle boils vigorously, causing the food in the middle to tumble to the periphery; while when the arc-shaped section or the side coil winding is heated, the periphery boils vigorously, causing the food in the middle to tumble to the periphery, and this alternation repeats.

[0057] Regarding the winding direction, for the small coils in the arc-shaped section, all small coils in this embodiment are wound in the same direction, which can be all clockwise or all counterclockwise. This arrangement reduces the difficulty of winding. Based on the same winding direction, the first guide portion 314 can also be set at the same position on the small coil. After winding one small coil, another small coil is wound through the first guide portion 314, thus completing the winding of multiple small coils. Since the lower plate 311 in this embodiment has the first guide portion 314 at the first screw post 33, no special alignment is required. The lower plate 311 can still be installed even after rotating a certain angle without affecting subsequent winding. Furthermore, in this embodiment, the bottom coil and side coil have the same winding direction as the arc-shaped section coil, which reduces the need for machine direction adjustment during winding. In other embodiments, the winding directions can also be different, for example, the winding directions of the bottom coil, side coil, and arc-shaped section coil can be different. Alternatively, the small coils in the arc-shaped section can include a first winding direction coil and a second winding direction coil, which are spaced apart. This arrangement reduces the influence of the magnetic field generated by adjacent coils. For adjacent small coils, when their winding directions are the same, the current directions of their adjacent coils are exactly opposite (when one small coil is clockwise, its closest adjacent coil is counterclockwise), which can cause the magnetic fields to cancel each other out. Therefore, by arranging coils with different winding directions at intervals, the magnetic field can be enhanced, improving the heating effect. Based on this, when the small coils in the arc-shaped section have different winding directions, their isolation gap can be smaller than when the small coils in the arc-shaped section have the same winding direction.

[0058] For the coil windings in the arc-shaped section, since the arc-shaped section has multiple arc-shaped heating coils (i.e., small coils), they can be formed by winding a single wire or by forming multiple coil windings. When the arc-shaped section is formed by winding multiple coils, there can be two groups or more groups. By setting multiple groups of coils, individual control can be achieved, with some parts heated and others not heated, thus promoting the tumbling and stirring of the food.

[0059] In other embodiments, magnetic strips may also be provided. Magnetic strips can be provided at the bottom, sides, and arc-shaped portions as needed. They can be fixed using a magnetic strip holder, or by adhesive, heat fusion, or other methods. For example, magnetic strips can be provided on the winding rib 11, or a bottom magnetic strip holder with magnetic strips can be added. Magnetic strips can be provided on the upper plate of the arc-shaped portion, or a magnetic strip holder with magnetic strips can be added to the arc-shaped portion. Magnetic strips can be provided on the circumferential side ribs, or a side magnetic strip holder with magnetic strips can be added. The magnetic strips can concentrate the magnetic field generated by the coil, improving heating efficiency.

[0060] This embodiment also discloses an electromagnetic heating electric pot, see reference. Figure 5The device includes a pot body 300 and an inner pot 400, with the inner pot placed inside the pot body. The pot body includes a middle ring 301, a heat insulation cover 302, and a base 303. An electromagnetic coil 100 is housed within the base. The middle ring 301 is fixed to the electromagnetic coil to secure the heat insulation cover 302 between the middle ring 301 and the electromagnetic coil 100. The electromagnetic coil can utilize the structure described in this embodiment. Specifically, the electromagnetic coil can be fixed using a fixing part 21. For example, a screw post can be installed downwards on the middle ring, and a screw post can be installed upwards on the base; both screw posts cooperate with the fixing part 21 to secure the coil.

[0061] Reference Figure 6 and Figure 7 This application proposes another embodiment of the electromagnetic coil. The main difference from the previous embodiment is that in the previous embodiment, the arc-shaped heating coil was wound on one winding frame, while in this embodiment, the arc-shaped heating coil is wound on two winding frames. Specifically, this embodiment has 8 winding frames and 4 arc-shaped heating coils. That is, the number of winding frames and arc-shaped heating coils in this embodiment are not equal; the number of winding frames is greater than the number of arc-shaped heating coils. In other embodiments, an arc-shaped heating coil can be wound on two or more winding frames, such as three or even four winding frames, ultimately forming an irregularly shaped coil. It should be noted that an irregularly shaped coil refers to a non-circular coil. (Refer to...) Figure 6 When wound on two winding frames, the wire resembles an ellipse. This winding method reduces the number of turns and simplifies the winding process. Understandably, the number of winding frames can be adjusted as needed.

[0062] In this embodiment, the multiple small coils in the arc-shaped section can be wound with a single wire or with multiple wires. For example, the four arc-shaped heating coils (small coils) in this embodiment can be wound with four wires or with two wires wound in pairs. The bottom or side coils can be wound with the arc-shaped section coils using a single wire or with multiple wires, allowing for separate control. That is, the bottom, side, and arc-shaped coils can all use the same wire, or they can be individually controlled, or they can be combined in pairs with a single wire.

[0063] In this embodiment, refer to Figure 6 and Figure 7Because the coil is wound on two winding frames, the small coil has an overall elliptical shape. This elliptical coil has a central blank area with no coil distribution, affecting the heating effect in that area. In this embodiment, a wire-blocking structure 35 is provided in the middle. Part of the conductor is wound around the area between adjacent winding frames via the wire-blocking structure 35, thus forming a heating zone within the irregularly shaped coil. The wire-blocking structure 35 allows the coil to move appropriately towards the central blank area, improving the heating effect in that area. The wire-blocking structure 35 can be a rib integrally formed on the coil reel, or it can be a separate structure such as a screw or fixing post fixed to the coil reel. The specific number of coils that can be moved by the wire-blocking structure can be set as needed. Figure 6 The example given is to place one coil in the middle blank area. In other embodiments, two or more coils can be moved to the middle blank area using a wire-blocking structure as needed. Alternatively, the upper or lower coils can be partially moved to the middle blank area using a wire-blocking structure as needed.

[0064] In this embodiment, a predetermined gap exists between the conductor partially restrained by the wire-blocking structure 35 and the conductor of the irregularly shaped coil body. This predetermined gap is the maximum distance the conductor travels from the irregularly shaped coil body. That is, the wire-blocking structure 35 causes a portion of the conductor to leave the irregularly shaped coil body. (Refer to...) Figure 6 The given information indicates that a wire has left the main body. Specifically, the preset gap is larger than the outer diameter of a wire, causing the wire to be a certain distance away from the main body.

[0065] In this embodiment, a blank area is formed in the middle of the irregularly shaped coil, and the wire-blocking structure 35 is disposed in the blank area. The blank area can be understood as an area not covered by the coil, where there is space, which is just enough to accommodate the wire-blocking structure 35, making the spatial layout compact.

[0066] In this embodiment, the number of winding frames is twice the number of irregular coils, and one coil is wound on two winding frames to form an irregular coil.

[0067] In this embodiment, the number of winding frames is 4-10.

[0068] In this embodiment, a side coil is provided on the side of the coil body, a bottom coil is provided on the bottom, and a special-shaped coil of this embodiment is provided on the arc-shaped part. The presence of heating coils on the side, bottom, and arc-shaped parts ensures effective heating of all three areas of the coil.

[0069] In this embodiment, the side coil is formed by winding it in a winding groove on the side of the disk body, and the bottom coil is fixed by a bottom winding frame. The side, bottom, and arc-shaped portions all have winding structures, facilitating coil winding.

[0070] In this embodiment, refer to Figure 6 The arc-shaped heating coil is equipped with a magnetic strip 36, which can concentrate the magnetic field and improve the heating effect. Specifically, a magnetic strip receiving structure is provided on the upper plate to install the magnetic strip.

[0071] In this embodiment, the arc-shaped heating coil is wound on two winding frames, reducing the total number of coil turns and simplifying the winding process. Furthermore, the inclusion of a wire-blocking structure allows for a more rational coil distribution, reducing the heat-deprived area at the arc-shaped portion.

[0072] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0073] 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.

[0074] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art.

Claims

1. An electromagnetic coil, comprising a coil body and a coil wound on the coil body, characterized in that, The disc body includes a flat bottom, a vertical side, and an arc-shaped section connecting the bottom and the side. Multiple winding frames are distributed along the circumference of the disc body on the arc-shaped section. Coils are wound on the winding frames, and one coil is wound on two or more winding frames to form an irregular coil. The irregular coil is provided with a wire-blocking structure. Some wires are wound in the area between adjacent winding frames through the wire-blocking structure to form a heating zone in the irregular coil.

2. The electromagnetic coil as described in claim 1, characterized in that, The conductors partially restricted by the wire-blocking structure have a predetermined gap with the conductors of the main body of the irregularly shaped coil.

3. The electromagnetic coil as described in claim 1, characterized in that, A blank area is formed in the middle of the irregularly shaped coil, and the wire-blocking structure is disposed in the blank area.

4. The electromagnetic coil as described in claim 1, characterized in that, The number of winding frames is twice the number of irregular coils, and one coil is wound on two winding frames to form an irregular coil.

5. The electromagnetic coil as described in claim 1, characterized in that, The number of winding frames is 4-10.

6. The electromagnetic coil as described in claim 1, characterized in that, The disc body has a side coil on its side, a bottom coil on its bottom, and a shaped coil on its arc-shaped part.

7. The electromagnetic coil as described in claim 6, characterized in that, The side coil is formed by winding it in a winding groove on the side of the disc body, and the bottom coil is fixed by a bottom winding frame.

8. The electromagnetic coil as described in claim 1, characterized in that, The wire-blocking structure is either an integrally formed baffle rib on the wire reel, or a separate screw or fixing post fixed on the wire reel.

9. The electromagnetic coil as described in claim 1, characterized in that, The preset gap is greater than the outer diameter of a wire.

10. An electromagnetic heating electric pot, comprising a pot body and an inner pot, wherein the inner pot is placed inside the pot body, the pot body comprising a middle ring, a heat preservation cover, and a base, wherein an electromagnetic coil as described in any one of claims 1 to 9 is fixed inside the pot body, and the middle ring is fixed to the electromagnetic coil to fix the heat preservation cover between the middle ring and the electromagnetic coil.

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