Electromagnetic wire coil for cooking utensil

Abstract

The electromagnetic wire coil for the cooking utensil comprises a coil body and a coil wound on the coil body, the coil body is provided with a bottom winding area, at least part of the coil is wound on the bottom winding area, the bottom winding area is provided with a contact cambered surface, the bottom of the coil body is provided with a wire pressing rib, and the wire pressing rib and the contact cambered surface are matched to form a winding space. The coils are vertically stacked into at least two layers in the winding space, the winding space comprises an inlet section and an arc-shaped section, and the inlet section is provided with a matched protrusion so as to reduce the gap between the end, away from the center of the disc body, of the wire pressing rib and the disc body. Due to the fact that the matched protrusions protrude towards the winding space, the influence of the bottom contact cambered surface of the disc body on the winding space is reduced, when an upper layer coil is wound, the position height of each coil of the upper layer coil is closer, the winding difficulty of the upper layer coil is lowered, and the production efficiency is improved. The wire pressing protrusions and the matching protrusions can jointly clamp the upper layer coil and the lower layer coil.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to an electromagnetic wire reel for cooking utensils. Background Art

[0002] The electromagnetic wire reel serves as a heating device in electromagnetic cooking appliances, and usually includes a reel body and an electromagnetic coil wound on the reel body. In order to facilitate the winding of the electromagnetic coil, a wire pressing rib is provided at the bottom of the reel body. When winding the electromagnetic coil, the electromagnetic coil is wound in the space between the wire pressing rib and the reel body. The electromagnetic coil is squeezed by the wire pressing rib and the reel body to remain stable.

[0003] However, for small-capacity electromagnetic cooking utensils, the volume of the dish is small, and the bottom wall of the dish is usually arc-shaped rather than flat. As a result, the space between the wire pressing ribs at the bottom of the dish and the dish is smaller near the center of the dish, and in the radial outward direction of the dish, the space becomes larger and larger under the action of the arc surface at the bottom of the dish, making the inner and outer segment difference of the winding space between the wire pressing ribs and the dish too large. As a result, when the electromagnetic coil is wound from the inside to the outside, the clamping force on the outer electromagnetic coil is smaller or even not clamped by the wire pressing ribs and the dish, and the outer coil is very easy to loosen.

[0004] In addition, when double-layer dense winding is performed at the bottom of the disc, it often happens that after the lower coil is wound, when winding to the upper layer, it is necessary to continuously adjust the position of each turn of the upper coil according to the curvature of the disc to make it fit with the lower coil. Not only does the winding difficulty increase, but the upper coil is easily blocked by the lower coil during the winding process and cannot be completed, or the upper coil winding is chaotic. After the upper coil is wound, the outer side is less clamped by the wire pressing ribs and the disc, and it is also easy to loosen, making the upper coil loose and chaotic, affecting the coil parameters and cooking efficiency. In addition, the coil may protrude from the wire pressing ribs, resulting in a low product yield. Utility Model Content

[0005] The utility model provides an electromagnetic wire reel for cooking utensils, which solves the problems that the outer coil is subjected to a small clamping force due to the curved surface at the bottom of the reel, and is prone to loosening, and the upper coil is difficult to wind and is prone to winding confusion when double-layer dense winding is performed.

[0006] The technical solution adopted by the utility model is:

[0007] An electromagnetic wire reel for cooking utensils comprises a reel body and a coil wound on the reel body, the reel body having a bottom winding area, at least part of the coil being wound on the bottom winding area, the bottom winding area having a contact arc surface, a wire pressing rib being arranged at the bottom of the reel body, the wire pressing rib and the contact arc surface cooperating to form a winding space, the coil being stacked up and down in at least two layers in the winding space, the winding space comprising an entrance section and an arc section, the entrance section being provided with a matching protrusion to reduce the gap between the reel body and one end of the reel body away from the center of the reel body.

[0008] The electromagnetic wire reel for cooking utensils of the utility model also has the following additional technical features:

[0009] The matching protrusion extends transversely to have a matching plane, so that the inlet section extends in a horizontal direction, and the inlet section has a horizontal guide inlet.

[0010] A transition arc surface is arranged between the entrance section and the arc section.

[0011] The height of the arc section is H1, and the height of the entrance section is H2, wherein H1:H2=0.9~1.1.

[0012] The matching protrusion is arranged on the disc body and protrudes toward the pressing rib.

[0013] The wire pressing rib comprises a body and a guide section, the inner side end of the body is fixed to the disc body, the guide section is located at the outer side end of the body, and the thickness of the guide section is smaller than the thickness of the body.

[0014] The electromagnetic wire reel also includes a magnetic strip frame arranged at the bottom of the reel body, the magnetic strip frame is provided with a mounting arm extending radially along the reel body, the mounting arm cooperates with the contact arc surface to form a wire pressing space, and the end of the mounting arm away from the center of the reel body is provided with a pressing rib protruding toward the wire pressing space.

[0015] The wire pressing ribs and the mounting arms are both in plurality and are arranged at intervals along the circumference of the disk body, and the wire pressing ribs and the mounting arms are staggered.

[0016] The bottom winding area is provided with an annular positioning rib extending along the circumference of the disc body, and the wire pressing ribs are arranged at intervals on the annular positioning rib along the circumference of the disc body.

[0017] The side wall of the disk body is also provided with a side winding area, and at least part of the coil is wound in the side winding area. The side wall of the disk body is also provided with elastic ribs, which cooperate with the side wall of the disk body to form a winding groove. The elastic ribs are provided with a matching arc surface that matches the shape of the side wall of the disk body on the side facing the disk body.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0019] 1. In the utility model, a matching protrusion is provided at the entrance section of the winding space, so that the height of the entrance section of the winding space is reduced, that is, the gap between the outer end of the wire pressing rib and the disc body is reduced. On the one hand, the height of the winding space varies less in the radial direction of the disc body, and the height of the winding space is more uniform, so that the disc body and the wire pressing rib can play a better clamping role on the inner and outer coils to prevent the coils from loosening.

[0020] In addition, due to the setting of the protrusion, the curvature change of the disk body itself can be compensated, so that the entrance section of the winding space is less affected by the contact arc surface of the bottom of the disk body, so that when the upper coil is wound, the position height of each turn of the upper coil is closer, and the upper coil can be wound at almost the same height, which greatly reduces the difficulty of winding the upper coil and improves production efficiency. After the winding is completed, the disk body and the wire pressing ribs can jointly clamp the upper and lower coils in the entrance section to maintain the stability of the upper and lower coils, thereby improving the coil stability and product yield.

[0021] 2. As a preferred embodiment of the utility model, a transition arc surface is provided between the entrance section and the arc section. The transition arc surface makes the transition between the entrance section and the arc section smoother, and thus does not form an obstacle to the coil winding, so that each coil in the same layer can contact each other to form a dense winding structure. It is avoided that a corner is formed between the entrance section and the arc section so that the corner separates the coils, and a large gap is generated between the two coils, which affects the efficiency of electromagnetic heating cooking.

[0022] 3. As a preferred embodiment of the utility model, the mating protrusion extends laterally so that the entrance section extends in the horizontal direction, and the entrance section has a horizontal guide entrance. The mating plane is matched so that the entrance section of the winding space is a space extending in the horizontal direction, and the height of the space in the radial direction of the disk body remains unchanged. On the one hand, the clamping force of the wire pressing rib and the disk body on the coil is more stable, thereby improving the wire pressing effect. On the other hand, it facilitates the winding of the upper coil during double-layer dense winding, and the position of the upper coil in the space is highly consistent, so that there is no need to adjust the height of the coil during the winding process, and the winding can be carried out directly, which reduces the difficulty of winding and improves the stability of the coil after the winding is completed.

[0023] 4. As a preferred embodiment of the utility model, the wire pressing rib includes a main body and a guide section, the inner end of the main body is fixed to the disc, the guide section is located at the outer end of the main body, and the thickness of the guide section is less than the thickness of the main body. In the double-layer winding process, after the lower coil is wound, the upper and lower spaces in the winding space are reduced, and the upper coil may be difficult to enter the winding space. Therefore, the wire pressing rib can be elastically deformed by bending it upward, thereby increasing the winding space, allowing the upper coil to smoothly enter the winding space and complete the winding. The guide section is located at the free end of the main body, and its thickness is less than the thickness of the main body, so that the wire pressing rib is more likely to be elastically deformed at the guide section, thereby opening the opening on the outside of the winding space, making it easier for the coil to enter the winding space.

[0024] 5. As a preferred embodiment of the present invention, the bottom winding area is provided with an annular positioning rib extending along the circumference of the disk body, and the wire pressing ribs are arranged at intervals along the circumference of the disk body on the annular positioning ribs. There are multiple wire pressing ribs fixed to the annular positioning ribs and extending radially outwardly along the disk body. The coil in the winding space is clamped by the wire pressing ribs and the disk body, thereby maintaining a relatively stable posture. The coil outside the winding space is not pressed by the wire pressing ribs, and is prone to loosening, or shrinking toward the center of the disk body under the action of the preload. The annular positioning rib is located at the innermost side of the coil, which can limit the coil, so that both the coil in the winding space and the coil outside the winding space are limited by the annular positioning ribs and extend along the circumference of the disk body, thereby maintaining a ring shape, avoiding the local area of ​​the coil from shrinking toward the center of the disk body, helping to maintain the stability of the coil posture, and thus ensuring the efficiency of electromagnetic heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of an electromagnetic wire reel in one embodiment of the utility model;

[0027] Figure 2 A cross-sectional view of an electromagnetic wire reel according to an embodiment of the utility model;

[0028] Figure 3 for Figure 2 Magnified view of area A in the middle;

[0029] Figure 4 for Figure 2 Magnified view of area B;

[0030] Figure 5 This is a structural explosion view of an electromagnetic wire reel according to an embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of a disk body in one embodiment of the utility model;

[0032] Figure 7 It is a structural schematic diagram of a magnetic strip rack under one implementation mode of the utility model.

[0033] in:

[0034] 1 disc body; 11 matching protrusion; 111 matching plane; 12 winding space; 121 arc section; 122 entrance section; 13 annular positioning rib; 14 elastic rib position; 141 first extension section; 142 second extension section; 15 contact arc surface;

[0035] 2 press wire rib; 21 body; 22 guide section;

[0036] 3 coils;

[0037] 4 magnetic strip rack; 41 pressing rib; 42 pressing line space; 43 mounting arm. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0040] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] like Figure 1 , Figure 2 , Figure 3 As shown, an electromagnetic wire reel for a cooking utensil comprises a reel body 1 and a coil 3 wound on the reel body 1, the reel body 1 having a bottom winding area, at least part of the coil 3 being wound on the bottom winding area, the bottom winding area having a contact arc surface 15, a wire pressing rib 2 being arranged at the bottom of the reel body 1, the wire pressing rib 2 and the contact arc surface 15 cooperating to form a winding space 12, the coil 3 being stacked up and down in at least two layers in the winding space 12, the winding space 12 comprising an entrance section 122 and an arc section 121, the entrance section 122 being provided with a matching protrusion 11 to reduce a gap between the reel body 1 and one end of the reel body 1 away from the center of the reel body 1.

[0044] It can be understood that, taking the double-layer coil 3 as an example, when the double-layer coil 3 is wound, the disc body 1 is first inverted so that the wire pressing rib 2 is located above the disc body 1, and then the coil 3 is placed close to the surface of the disc body 1 to wind the lower coil 3, and the coil 3 is wound circle by circle from the entrance section 122 into the winding space 12. After the winding is completed, the lower coil 3 is close to the surface of the disc body 1. A space for winding the upper coil 3 is formed between the lower coil 3 and the wire pressing rib 2. The upper coil 3 is then wound in the space. After the winding is completed, each turn of the coil 3 in the upper and lower coils 3 is in contact with each other, and at the same time, the upper coil 3 and the lower coil 3 are also in contact. In addition, the wire pressing rib 2 and the disc body 1 squeeze the two layers of coils 3 from the upper and lower sides to clamp the two layers of coils 3 and stabilize them.

[0045] In the utility model, the entrance section 122 of the winding space 12 is provided with a matching protrusion 11, so that the height of the entrance section 122 of the winding space 12 is reduced, that is, the gap between the outer end of the wire pressing rib 2 and the disk body 1 is reduced. On the one hand, the height of the winding space 12 varies less in the radial direction of the disk body 1, and the height of the winding space 12 is more uniform, so that the disk body 1 and the wire pressing rib 2 can play a better clamping role on the inner and outer coils 3 to prevent the coil 3 from loosening.

[0046] In addition, due to the setting of the mating protrusion 11, the winding space 12 is less affected by the contact arc surface 15 at the bottom of the disk body 1, so that when the upper coil 3 is wound, the position height of each turn of the upper coil 3 is closer, and the upper coil 3 can be wound at almost the same height, which greatly reduces the difficulty of winding the upper coil 3 and improves production efficiency. After the winding is completed, the disk body 1 and the wire pressing rib 2 can jointly clamp the upper and lower coils 3 to maintain the stability of the upper coil 3 and the lower coil 3, thereby improving the stability of the coil 3 and the product yield.

[0047] It should be noted that the present invention does not limit the location of the matching protrusion 11. In one embodiment, the matching protrusion 11 is disposed on the wire crimping rib 2. In another embodiment, the matching protrusion 11 is disposed on the wire crimping rib 2. Figure 3 As shown, the matching protrusion 11 is arranged on the disc body 1 and protrudes toward the crimping rib 2. Alternatively, the matching protrusion 11 is arranged on both the crimping rib 2 and the disc body 1.

[0048] Preferably, if Figure 3 As shown, the mating protrusion 11 extends transversely to have a mating plane 111 , so that the inlet section 122 extends in a horizontal direction, and the inlet section 122 has a horizontal guide inlet.

[0049] The matching plane 111 matches to make the entrance section 122 of the winding space 12 a space extending horizontally, and the height of the space along the radial direction of the disk body 1 remains unchanged. On the one hand, the clamping force of the wire pressing protrusion 22 and the matching protrusion 11 on the coil 3 is more stable, and the wire pressing effect is improved. On the other hand, it is convenient for double-layer dense winding, which not only facilitates the coil 3 to enter the winding space 12 through the entrance section 122, but also when the upper coil 3 is wound, the position height of the upper coil 3 in the space is consistent, so there is no need to adjust the height of the coil 3 during the winding process, and the winding can be carried out directly, which reduces the difficulty of winding and improves the stability of the coil 3 after the winding is completed.

[0050] Specifically, Figure 3 As shown, the outer end of the crimping rib 2 has a guide section 22 extending in the horizontal direction, and the guide section 22 and the matching protrusion 11 form an entrance section 122 .

[0051] Furthermore, the arc segment 121 extends in an arc shape that matches the disc body 1 , and the heights of the arc segment 121 in the radial direction of the disc body 1 tend to be consistent.

[0052] Further, such as Figure 3 As shown, a transition arc surface is provided between the entrance section 122 and the arc section 121 .

[0053] The transition arc surface makes the transition between the entrance section 122 and the arc section 121 smoother, so that no obstruction is formed in the winding of the coil 3, so that each coil 3 in the same layer can contact each other to form a dense winding structure. It is avoided that a corner is formed between the entrance section 122 and the arc section 121 so that the corner separates the coil 3, and a large gap is generated between the two coils 3, which affects the efficiency of electromagnetic heating cooking.

[0054] As a preferred embodiment of the present invention, Figure 3 As shown, the height of the arc segment 121 is H1, and the height of the entrance segment 122 is H2, wherein H1:H2=0.9-1.1.

[0055] The height difference between the entrance section 122 and the arc section 121 is less than 10%, so that the heights inside and outside the winding space 12 are closer, thereby exerting a uniform and stable clamping force on the inner and outer coils 3, making the inner and outer coils 3 more evenly stressed, and avoiding uneven stress on the coils 3 and causing local looseness or damage.

[0056] However, it should be noted that the utility model does not limit the heights of the arc segment 121 and the entrance segment 122. The height of the entrance segment 122 can be greater than the height of the arc segment 121, so that the clamping force of the inner wall of the entrance segment 122 on the outer coil 3 is slightly smaller than the clamping force of the inner wall of the arc segment 121 on the inner coil 3. It can also be less than the height of the arc segment 121, so that the clamping force of the inner wall of the entrance segment 122 on the outer coil 3 is slightly greater than the clamping force of the inner wall of the arc segment 121 on the inner coil 3.

[0057] Preferably, if Figure 3 As shown, the matching protrusion 11 is arranged on the disc body 1 and protrudes toward the crimping rib 2 .

[0058] Furthermore, if Figure 3 As shown, the outer end of the matching protrusion 11 is located outside the outer end of the wire crimping rib 2 to provide a stable support for the coil 3 so that the coil 3 is tightly attached to the disc body 1 .

[0059] Preferably, if Figure 3 As shown, the outer side of the mating protrusion 11 is provided with a chamfer to reduce the wear on the coil 3 during the winding process.

[0060] In a preferred embodiment, Figure 3 As shown, the wire pressing rib 2 includes a main body 21 and a guide section 22. The inner end of the main body 21 is fixed to the disk 1, and the guide section 22 is located at the outer end of the main body 21. The thickness of the guide section 22 is less than the thickness of the main body 21.

[0061] During the double-layer winding process, after the lower coil 3 is wound, the upper and lower spaces in the winding space 12 are reduced, and the upper coil 3 may have difficulty entering the winding space 12. Therefore, the wire pressing rib 2 can be bent upward to cause elastic deformation, thereby increasing the winding space 12, so that the upper coil 3 can smoothly enter the winding space 12 and complete the winding. The guide section 22 is located at the free end of the body 21, and its thickness is less than that of the body 21, so that the wire pressing rib 2 is more likely to be elastically deformed at the guide section 22, thereby opening the opening outside the winding space 12, so that the coil 3 can enter the winding space 12 more easily.

[0062] As a preferred embodiment of the present invention, Figure 1 , Figure 2 , Figure 4 , Figure 7 As shown, the electromagnetic wire reel also includes a magnetic strip frame 4 arranged at the bottom of the reel body 1, and the magnetic strip frame 4 is provided with a mounting arm 43 extending radially along the reel body 1, and the mounting arm 43 cooperates with the contact arc surface 15 to form a wire pressing space 42, and the end of the mounting arm 43 away from the center of the reel body 1 is provided with a pressing rib 41 protruding toward the wire pressing space 42.

[0063] The magnetic strip frame 4 is fixed to the bottom of the disk body 1 and is used to install the magnetic strip. A wire pressing space 42 for winding is formed between the mounting arm 43 and the disk body 1, so that the mounting arm 43 can also play an auxiliary fixing role for the coil 3, further improving the winding stability of the coil 3.

[0064] Specifically, Figure 1 As shown, the wire pressing ribs 2 and the mounting arms 43 are both multiple and are arranged at intervals along the circumference of the disk body 1, and the wire pressing ribs 2 and the mounting arms 43 are staggered.

[0065] The mounting arm 43 is located between two adjacent wire pressing ribs 2, and presses the coil 3 there, so that the coil 3 fits tightly with the disk body 1, and the distance between the coil 3 and the disk surface is stable and regular.

[0066] Specifically, Figure 4 As shown, the height of the pressing rib 41 gradually increases radially outwardly of the disc body 1 to adapt to the curved surface of the disc body 1, so that the height inside and outside the pressing space 42 is more uniform.

[0067] As a preferred embodiment of the present invention, Figure 6 As shown, the bottom winding area is provided with an annular positioning rib 13 extending along the circumference of the disc body 1, and the wire pressing ribs 2 are arranged at intervals on the annular positioning rib 13 along the circumference of the disc body 1.

[0068] There are multiple wire pressing ribs 2 fixed to the annular positioning rib 13 and extending radially outward from the disk body 1. The coil 3 in the winding space 12 is clamped by the wire pressing ribs 2 and the disk body 1, thereby maintaining a relatively stable posture. The coil 3 outside the winding space 12 is not pressed by the wire pressing ribs 2, so it is easy to become loose, or shrink toward the center of the disk body 1 under the action of the preload. The annular positioning rib 13 is located at the innermost side of the coil 3, which can limit the coil 3, so that both the coil 3 in the winding space 12 and the coil 3 outside the winding space 12 are limited by the annular positioning rib 13 and extend circumferentially along the disk body 1, thereby maintaining a ring shape, avoiding the local area of ​​the coil 3 from shrinking toward the center of the disk body 1, and helping to maintain the stability of the posture of the coil 3, thereby ensuring the efficiency of electromagnetic heating.

[0069] In a preferred embodiment, Figure 1 , Figure 5 , Figure 6 As shown, the side wall of the disk body 1 is also provided with a side winding area, and at least part of the coil 3 is wound in the side winding area. The side wall of the disk body 1 is also provided with an elastic rib position 14, and the elastic rib position 14 cooperates with the side wall of the disk body 1 to form a winding groove. The elastic rib position 14 is provided with a matching arc surface adapted to the shape of the side wall of the disk body 1 on the side facing the disk body 1.

[0070] The bottom winding area and the side winding area of ​​the pan body 1 are both wound with coils 3, so that during the cooking process, the bottom coil 3 and the side coil 3 heat the pot together, thereby forming three-dimensional circulating heating, which greatly improves the heating efficiency.

[0071] The elastic rib 14 extends radially along the disk body 1, and one end is fixed and the other end is free, so that it can swing around the fixed end and undergo elastic deformation. When winding, the elastic rib 14 can swing to open the winding groove, thereby facilitating the coil 3 to enter the winding groove. After the winding is completed, the elastic rib 14 squeezes the coil 3, thereby cooperating with the disk body 1 to clamp the coil 3.

[0072] At the same time, the elastic ribs 14 are matched with the arc surface of the side wall of the disk body 1, so as to form a uniform and stable clamping force on the inner and outer sides of the side coils 3, thereby ensuring the stability of the side coils 3.

[0073] Furthermore, if Figure 6 As shown, the elastic rib 14 has a first extension section 141 and a second extension section 142 located outside the first extension section 141 along the radial direction of the disk body 1, the gap between the first extension section 141 and the disk body 1 is larger than the gap between the second extension section 142 and the disk body 1, and the coil 3 is stacked in at least two layers between the first extension section 141 and the disk body 1, and is wound in one layer between the second extension section 142 and the disk body 1.

[0074] The inner coil of the side coil 3 is stacked up and down in at least two layers to form a dense winding area, and the outer coil is one layer to form a sparse winding area, so that a structure of sparse winding and dense winding of the coil 3 is formed on the side of the plate body 1. The coil 3 near the bottom of the plate body 1 is densely wound, which has higher heating efficiency and better heating effect on the bottom of the pot. The area of ​​the electromagnetic coil corresponding to the side of the pot is sparsely wound to assist in heating the pot, so that the pot is heated evenly and the heating uniformity of the food is improved.

[0075] It should be noted that the sparse winding and dense winding here refer to the number of layers of the coil 3 stacked. If the coil 3 is stacked in two or more layers, it is dense winding, and if the coil 3 is wound in one layer, it is sparse winding. However, regardless of sparse winding or dense winding, each turn of the coil 3 in the same layer is in contact with each other.

[0076] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0077] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0078] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An electromagnetic wire coil for a cooking utensil, comprising a coil body and a coil wound on the coil body, wherein the coil body has a bottom winding area, and at least part of the coil is wound on the bottom winding area, characterized in that: The bottom winding area has a contact arc surface, and a wire pressing rib is arranged at the bottom of the disk body. The wire pressing rib cooperates with the contact arc surface to form a winding space. The coil is stacked up and down in at least two layers in the winding space. The winding space includes an entrance section and an arc section. The entrance section is provided with a matching protrusion to reduce the gap between the disk body and the end of the wire pressing rib away from the center of the disk body.

2. The electromagnetic wire reel for cooking utensils according to claim 1, characterized in that: The matching protrusion extends transversely to have a matching plane, so that the inlet section extends in a horizontal direction, and the inlet section has a horizontal guide inlet.

3. The electromagnetic wire reel for cooking utensils according to claim 2, characterized in that: A transition arc surface is arranged between the entrance section and the arc section.

4. The electromagnetic wire reel for cooking utensils according to claim 1, characterized in that: The height of the arc section is H1, and the height of the entrance section is H2, wherein H1:H2=0.9-1.

1.

5. The electromagnetic wire reel for cooking utensils according to claim 1, characterized in that: The matching protrusion is arranged on the disc body and protrudes toward the pressing rib.

6. The electromagnetic wire reel for cooking utensils according to claim 5, characterized in that: The wire pressing rib comprises a body and a guide section, the inner end of the body is fixed to the disc, the guide section is located at the outer end of the body, and the thickness of the guide section is smaller than the thickness of the body.

7. The electromagnetic wire reel for cooking utensils according to claim 1, characterized in that: The electromagnetic wire reel also includes a magnetic strip frame arranged at the bottom of the reel body, the magnetic strip frame is provided with a mounting arm extending radially along the reel body, the mounting arm cooperates with the contact arc surface to form a wire pressing space, and the end of the mounting arm away from the center of the reel body is provided with a pressing rib protruding toward the wire pressing space.

8. The electromagnetic wire reel for cooking utensils according to claim 7, characterized in that: The wire pressing ribs and the mounting arms are both multiple and arranged at intervals along the circumference of the disk body, and the wire pressing ribs and the mounting arms are staggered.

9. The electromagnetic wire reel for cooking utensils according to claim 1, characterized in that: The bottom winding area is provided with an annular positioning rib extending along the circumference of the disk body, and the wire pressing ribs are arranged at intervals on the annular positioning rib along the circumference of the disk body.

10. The electromagnetic wire reel for cooking utensils according to claim 1, characterized in that: The side wall of the disk body is also provided with a side winding area, and at least part of the coil is wound in the side winding area. The side wall of the disk body is also provided with elastic ribs, and the elastic ribs cooperate with the side wall of the disk body to form a winding groove. The elastic ribs are provided with a matching arc surface adapted to the shape of the side wall of the disk body on the side facing the disk body.

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