Coil panel and electromagnetic cooking utensil

Abstract

The utility model discloses a coil panel and an electromagnetic cooking utensil, and relates to the technical field of electromagnetic heating. The auxiliary coil panel is sleeved with the main body coil panel, and the main body coil panel is detachably connected with the auxiliary coil panel; the coil comprises a first line segment, a second line segment and a third line segment which are connected in sequence; wherein the first line segment is wound on the main body coil panel, the second line segment is wound on the auxiliary coil panel, and the third line segment is wound on the main body coil panel and annularly arranged on the outer side of the first line segment and the outer side of the second line segment. According to the technical scheme provided by the utility model, the technical problems that the existing large-area planar coil panel is non-uniform in heating and particularly has a heating blind area at the central part are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnetic heating, particularly relates to a coil disc and electromagnetic cooking utensil. BACKGROUND

[0002] The coil disc is the core component in the electromagnetic cooking utensil, and is mainly used for generating the magnetic field to realize the electromagnetic heating. With the development of technology, the coil disc is used more and more widely, such as being applied to the electromagnetic oven, the electric rice cooker and other electromagnetic cooking utensils. When the alternating current passes through the coil disc, the changing magnetic field will be generated. The changing magnetic field will induce the eddy current in the conductive material (such as metal cookware), and the eddy current generates heat due to the action of resistance, so that the heating is realized.

[0003] But in the use process, the existing large-area planar coil disc will exist the problems of uneven heating, especially the heating blind area in the central part. UTILITY MODEL CONTENT

[0004] The utility model discloses a coil disc, which aims at solving the technical problems of uneven heating of the large-area planar coil disc, especially the heating blind area in the central part.

[0005] For the above purpose, the coil disc provided by the utility model comprises:

[0006] The main coil disc is provided with:

[0007] The auxiliary coil disc is provided with:

[0008] The coil comprises a first line segment, a second line segment and a third line segment connected in sequence, wherein the first line segment is arranged around the main coil disc, the second line segment is arranged around the auxiliary coil disc, and the third line segment is arranged around the main coil disc and annularly arranged outside the first line segment and the second line segment.

[0009] In an embodiment, the first line segment and the second line segment are integrally formed; and / or,

[0010] The second line segment and the third line segment are integrally formed.

[0011] In an embodiment, the coil disc further comprises a first clamping groove and a third clamping groove arranged on the surface of the main coil disc, the first line segment is arranged in the first clamping groove, and the third line segment is arranged in the third clamping groove; and / or,

[0012] The coil disc further comprises a second clamping groove arranged on the surface of the auxiliary coil disc, and the second line segment is arranged in the second clamping groove.

[0013] In an embodiment, the first wire segment is wound in the same direction as the second wire segment; and / or,

[0014] The second wire segment and the third wire segment are wound in the same direction.

[0015] In an embodiment, a through slot is formed in the main coil disc, and opposite sides of an inner wall of the through slot are respectively provided with at least one mounting position, and the at least two mounting positions are matched to fix the auxiliary coil disc.

[0016] In an embodiment, the coil disc further comprises a fixing structure arranged on the auxiliary coil disc, and the fixing structure is movably connected with the mounting position to fix the auxiliary coil disc on the main coil disc.

[0017] In an embodiment, the fixing structure comprises buckles, and the buckles are spaced apart along the circumferential direction of the auxiliary coil disc, and each of the buckles is correspondingly provided with a groove.

[0018] In an embodiment, the coil disc further comprises:

[0019] A first magnetic strip is arranged on a side of the main coil disc away from the first wire segment, and a plurality of first magnetic strips are spaced apart along the circumferential direction of the main coil disc;

[0020] A second magnetic strip is arranged on a side of the auxiliary coil disc away from the second wire segment, and a plurality of second magnetic strips are spaced apart along the circumferential direction of the auxiliary coil disc; and

[0021] A third magnetic strip is arranged on a side of the main coil disc away from the third wire segment, and a plurality of third magnetic strips are spaced apart along the circumferential direction of the main coil disc.

[0022] In an embodiment, the coil disc further comprises an aluminum plate arranged on a side of the main coil disc away from the coil.

[0023] The utility model also provides a kind of electromagnetic cooking utensil, including coil disc, coil disc includes:

[0024] Main coil disc;

[0025] Auxiliary coil disc, the main coil disc is set in the outside of the auxiliary coil disc and is detachably connected with the auxiliary coil disc; and

[0026] Coil, the coil includes first wire segment, second wire segment and third wire segment connected in sequence;Wherein, the first wire segment is wound in the main coil disc, the second wire segment is wound in the auxiliary coil disc, and the third wire segment is wound in the main coil disc and is annularly arranged on the outer side of the first wire segment and the second wire segment.

[0027] The technical scheme provided by the utility model discloses the main body coil disc is the main part of coil disc, is used to produce the main heating magnetic field. Can directly contact with the heating surface of electromagnetic oven, is the key part of producing heat. Through the setting of the auxiliary coil disc, the winding direction of the coil can be changed. Moreover, the auxiliary coil disc and the main body coil disc are detachably connected, so that flexible adjustment can be made to adapt to different heating requirements. In addition, the coil is divided into a first line segment, a second line segment and a third line segment by the setting of the coil, each line segment is wound on a specific coil disc, and current passes through the first line segment, the second line segment and the third line segment in turn. The first line segment, the second line segment and the third line segment cooperate with each other to change the direction of the magnetic force line. It can be understood that the magnetic field generated by the first line segment and the magnetic field generated by the second line segment interact, and the magnetic field generated by the third line segment can adjust and optimize the magnetic field generated by the first line segment and the magnetic field generated by the second line segment, so as to change the direction of the magnetic force line and ensure the uniformity of heating. The technical scheme provided by the utility model embodiment can achieve uniform heating, energy saving and high efficiency without adjusting the electric control scheme, changing the material of the pot and increasing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0029] Figure 1 The utility model provides the top view structural schematic drawing of the embodiment of coil disc for the utility model;

[0030] Figure 2 The bottom view structural schematic drawing of the embodiment of coil disc provided by the utility model;

[0031] Figure 3 The structural schematic drawing of the embodiment of coil provided by the utility model;

[0032] Figure 4 The explosion structural schematic drawing of the embodiment of coil disc provided by the utility model.

[0033] Explanation of reference numerals:

[0034] 10, main body coil disc; 20, auxiliary coil disc; 30, coil; 31, first line segment; 32, second line segment; 33, third line segment; 40, buckle; 50, first magnetic strip; 60, second magnetic strip; 70, third magnetic strip.

[0035] The purposes, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0038] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0039] For the coil disc, when alternating current passes through the coil disc, a changing magnetic field will be generated. This changing magnetic field will induce eddy currents in conductive materials (such as metal cookware), and these eddy currents will generate heat due to the action of resistance, thereby achieving heating. However, in the process of use, the existing large-area coil disc will have the problem of uneven heating. Of course, the large-area coil can also be solved by connecting or connecting multiple coils in series to solve the problem of uniform heating, but the cost and efficiency are very high, and the requirement for electric control scheme is also high.

[0040] Therefore, the coil disc provided by the embodiment of the present application is characterized in that the auxiliary coil disc is sleeved in the main coil disc, the first wire segment is wound on the main coil disc, the second wire segment is wound on the auxiliary coil disc, and the third wire segment is wound on the main coil disc and surrounds the first wire segment and the second wire segment, so that the direction of the magnetic force line is changed, thereby solving the problem of uneven heating of the large-area coil disc.

[0041] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the accompanying drawings.

[0042] As shown in Figure 1 , Figure 2 , Figure 3 The utility model provides a coil disc, which comprises:

[0043] a main coil disc 10;

[0044] an auxiliary coil disc 20, the main coil disc 10 is sleeved outside the auxiliary coil disc 20 and detachably connected with the auxiliary coil disc 20; and

[0045] a coil 30, the coil 30 comprises a first wire segment 31, a second wire segment 32 and a third wire segment 33 connected in sequence; wherein the first wire segment 31 is wound on the main coil disc 10, the second wire segment 32 is wound on the auxiliary coil disc 20, and the third wire segment 33 is wound on the main coil disc 10 and surrounds the outer sides of the first wire segment 31 and the second wire segment 32.

[0046] In the technical scheme adopted in this embodiment, the main coil disc 10 is the main part of the coil disc and is used for generating a main heating magnetic field. The main coil disc 10 can be directly in contact with the heating surface of an electromagnetic oven and is the key part for generating heat. The auxiliary coil disc 20 can change the winding direction of the coil 30. Moreover, the auxiliary coil disc 20 is detachably connected with the main coil disc 10, so that the coil disc can be flexibly adjusted to adapt to different heating requirements. In addition, the coil 30 is divided into the first wire segment 31, the second wire segment 32 and the third wire segment 33, each wire segment is wound on a specific coil disc, and the current passes through the first wire segment 31, the second wire segment 32 and the third wire segment 33 in sequence. The first wire segment 31, the second wire segment 32 and the third wire segment 33 cooperate with each other to change the direction of the magnetic force line. It can be understood that the magnetic field generated by the first wire segment 31 and the magnetic field generated by the second wire segment 32 interact with each other, and the magnetic field generated by the third wire segment 33 can adjust and optimize the magnetic field generated by the first wire segment 31 and the magnetic field generated by the second wire segment 32, so as to change the direction of the magnetic force line and ensure the uniformity of heating. The technical scheme provided by the embodiment of the present application can achieve the effects of uniform heating, energy saving and high efficiency without adjusting the electric control scheme and without increasing the cost.

[0047] Specifically, the coil disc in the embodiment can be used for heating large-area special-shaped cookware, can be used for heating movable objects, and can be used for heating ordinary circular cookware, which is not limited herein. For the specific area of the coil disc, a person skilled in the art can select a corresponding structure according to different types of cookware, which is not limited herein. The coil disc comprises a main coil disc 10, an auxiliary coil disc 20, and a coil 30. The main coil disc 10 is the main part of the coil disc, usually has a large diameter, and is used for generating a main heating magnetic field. It is directly in contact with the heating surface of the induction cooker and is the key part of heat generation. The auxiliary coil disc 20 is sleeved in the inside of the main coil disc 10, can change the winding direction of the coil 30, and improve the uniformity of the heating area. The coil 30 is an electrically conductive component that actually generates an electromagnetic field. The coil 30 can comprise a first wire segment 31, a second wire segment 32, and a third wire segment 33 connected in sequence. The first wire segment 31 is wound on the main coil disc 10 and is responsible for generating a basic heating magnetic field. The second wire segment 32 is wound on the auxiliary coil disc 20 and is used for adjusting and optimizing the magnetic field distribution. The third wire segment 33 is wound on the main coil disc 10 again and surrounds the outside of the first wire segment 31 and the second wire segment 32, which can further control the shape and strength of the magnetic field and ensure the uniformity of heating. It can be understood that when winding the wire, the coil 30 can be first threaded through the auxiliary coil disc 20, then the auxiliary coil disc 20 is put aside, the first wire segment 31 on the inner ring of the main coil disc 10 is started to be wound, then the auxiliary coil disc 20 is connected with the main coil disc 10, the second wire segment 32 is wound on the auxiliary coil disc 20, and then the third wire segment 33 is wound on the outer ring of the main coil disc 10. In this way, the winding direction of the coil 30 can be changed, so that the direction of the magnetic force line is changed, thereby solving the problem of uneven heating of the large-area coil disc, and the structure is simple and convenient to assemble. Of course, in order to improve the safety of the coil disc, a mica sheet can be arranged on the surface of the coil disc, and the mica sheet can be detachably connected with the main coil disc 10.

[0048] Further, referring to Figure 3 In an embodiment of the present application, the first wire segment 31 and the second wire segment 32 are integrally formed; and / or,

[0049] The second wire segment 32 and the third wire segment 33 are integrally formed.

[0050] In the technical scheme adopted in this embodiment, by such a setting, the current wire passes through the first wire segment 31 to generate a first magnetic field, then passes through the second wire segment 32 to generate a second magnetic field, the second magnetic field interacts with the first magnetic field, and finally passes through the third wire segment 33 to generate a third magnetic field, which can adjust and optimize the second magnetic field and the first magnetic field. The continuity and uniformity of the magnetic field can be ensured, the gap and uneven area of the magnetic field can be reduced, and the requirement for the electric control scheme can be reduced, thereby reducing the risk.

[0051] Further, with reference to Figure 1 In an embodiment of the present application, the coil panel further comprises a first clamping groove and a third clamping groove arranged on the surface of the main coil panel 10, the first wire segment 31 is arranged in the first clamping groove, and the third wire segment 33 is arranged in the third clamping groove.

[0052] The coil panel further comprises a second clamping groove arranged on the surface of the auxiliary coil panel 20, and the second wire segment 32 is arranged in the second clamping groove.

[0053] In the technical scheme adopted in this embodiment, the first clamping groove and the third clamping groove are arranged to ensure the accurate positioning of the first wire segment 31 and the third wire segment 33 on the main coil panel 10, better control the distribution and strength of the magnetic field, and provide physical support for the coil 30, increase the structural stability, and reduce the displacement of the coil 30 caused by mechanical vibration or thermal expansion. The second clamping groove arranged on the auxiliary coil panel 20 can accurately control the magnetic field generated by the second wire segment 32 on the auxiliary coil panel 20, thereby improving the stability of the interaction between the magnetic field generated by the main coil panel 10 and the magnetic field generated by the auxiliary coil panel 20.

[0054] Further, with reference to Figure 1 、 Figure 3 In an embodiment of the present application, the winding direction of the first wire segment 31 is the same as the winding direction of the second wire segment 32.

[0055] The winding direction of the second wire segment 32 is the same as the winding direction of the third wire segment 33.

[0056] In the technical scheme adopted in this embodiment, the first wire segment 31, the second wire segment 32, and the third wire segment 33 are arranged in the same winding direction, so that the magnetic field generated by the first wire segment 31, the magnetic field generated by the second wire segment 32, and the magnetic field generated by the third wire segment 33 are superimposed on each other to enhance the strength of the magnetic field. The same winding direction makes the current flow in the same direction in the first wire segment 31, the second wire segment 32, and the third wire segment 33, which can reduce the magnetic field fluctuation caused by the change of the current direction, thereby more effectively managing the heat distribution of the coil panel and improving the heating effect. In addition, the wire segments arranged in the same winding direction can generate a more uniform magnetic field on the entire coil panel, so that the large-area coil panel can be uniformly heated. Moreover, the coil 30 arranged in the same winding direction can reduce electromagnetic interference, thereby reducing the interference to the surrounding electronic equipment.

[0057] Further, with reference to Figure 3 、 Figure 4 In an embodiment of the present application, a through groove is formed in the main coil panel 10, and opposite sides of the inner wall of the through groove are respectively provided with at least one mounting position, and the at least two mounting positions are matched to fix the auxiliary coil panel 20.

[0058] In the technical scheme adopted in the embodiment, the mounting position is arranged on the inner side wall of the through slot, so that the auxiliary coil disc 20 can be accurately positioned on the main coil disc 10, the relative position between the first line segment 31 and the second line segment 32 is accurate, and the distribution and intensity of the magnetic field can be more effectively controlled. In addition, the auxiliary coil disc 20 can be easily assembled or disassembled, the coil 30 can be conveniently wound, and maintenance and repair are facilitated.

[0059] Further, referring to Figure 3 、 Figure 4 In an embodiment of the utility model, the coil disc further comprises a fixing structure arranged on the auxiliary coil disc 20, and the fixing structure is movably connected with the mounting position to fix the auxiliary coil disc 20 on the main coil disc 10.

[0060] In the technical scheme adopted in the embodiment, the fixing structure can stably fix the auxiliary coil disc 20 on the main coil disc 10 and provide stable mechanical connection. In the embodiment, the fixing structure can be a bolt structure, the mounting position can be a slot structure, and the slot and the bolt can cooperate to provide accurate positioning and stable fixation. The fixing structure can also be a wedge structure, which can quickly fix and release the auxiliary coil disc 20 and meet the needs of frequent disassembly and assembly.

[0061] Further, referring to Figure 4 In an embodiment of the utility model, the fixing structure comprises a plurality of buckles 40 arranged along the circumferential direction of the auxiliary coil disc 20, and each buckle 40 is provided with a groove.

[0062] In the technical scheme adopted in the embodiment, the fixing structure can further comprise a buckle 40, and the buckle 40 made of plastic or metal can conveniently fix the auxiliary coil disc 20 on the main coil disc 10 and be easy to install and disassemble. Moreover, a plurality of buckles 40 are arranged along the circumferential direction of the auxiliary coil disc 20, which can uniformly fix the auxiliary coil disc 20 and ensure the stability of the auxiliary coil disc 20 on the main coil disc 10, thereby reducing the risk of shaking of the auxiliary coil disc 20.

[0063] Further, referring to Figure 1 、 Figure 2 In an embodiment of the utility model, the coil disc further comprises:

[0064] a first magnetic strip 50 arranged on the side of the main coil disc 10 away from the first line segment 31 and a plurality of first magnetic strips 50 arranged along the circumferential direction of the main coil disc 10;

[0065] a second magnetic strip 60 arranged on the side of the auxiliary coil disc 20 away from the second line segment 32 and a plurality of second magnetic strips 60 arranged along the circumferential direction of the auxiliary coil disc 20; and

[0066] The third magnetic strip 70 is arranged on the side of the main coil disc 10 away from the third line segment 33 and is spaced apart along the circumferential direction of the main coil disc 10.

[0067] In the technical scheme adopted in this embodiment, the first magnetic strip 50, the second magnetic strip 60 and the third magnetic strip 70 can optimize the magnetic field generated by the coil disc, so that the magnetic field is more concentrated and uniform, and the electromagnetic heating efficiency is improved. Each line segment is provided with a plurality of magnetic strips spaced apart along the circumferential direction of the coil disc, which can realize uniform distribution of the magnetic field and reduce the dead angle of the magnetic field. In this embodiment, the main coil disc 10 and the auxiliary coil disc 20 are both provided with magnetic strip grooves. If the magnetic strips are needed to be assembled, the main coil disc 10 and the auxiliary coil disc 20 can be assembled separately or separately. When the auxiliary coil disc 20 is inverted and buckled on the main coil disc 10, the magnetic poles of the second magnetic strip 60 are correctly aligned with the corresponding magnetic poles of the first magnetic strip 50 and the third magnetic strip 70, which can enhance the magnetic field generated by the main coil disc 10. The first magnetic strip 50, the second magnetic strip 60 and the third magnetic strip 70 can all be made of ferrite, silicon steel sheet or other magnetic materials, which have good magnetic permeability and can effectively guide and concentrate the magnetic field.

[0068] Further, in an embodiment of the utility model, the coil disc further comprises an aluminum plate arranged on the side of the main coil disc 10 away from the coil.

[0069] In the technical scheme adopted in this embodiment, the aluminum plate can enhance the heat dissipation performance of the coil disc. It can also be used as an electromagnetic shield to reduce the interference of the magnetic field generated by the coil disc on the surrounding electronic equipment, and also reduce the influence of the external magnetic field on the internal magnetic field distribution of the coil disc. In this embodiment, the aluminum plate is not an optional item and can also not be provided.

[0070] The utility model also provides a kind of electromagnetic cooking utensil, and electromagnetic cooking utensil includes the coil disc of each embodiment described above.The specific structure of coil disc refers to the above embodiment, since the electromagnetic cooking utensil of the present application adopts all the technical schemes of the above all embodiments, it at least has all the beneficial effects brought by the technical schemes of the above embodiments, which will not be repeated here.

[0071] The above is only an exemplary embodiment of the utility model, and does not limit the patent scope of the utility model, any equivalent structural transformation made by using the contents of the utility model specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the utility model.

Claims

1. A coil former characterized by, The coil disc comprises: a main coil disc; an auxiliary coil disc, the main coil disc being sleeved outside the auxiliary coil disc and detachably connected with the auxiliary coil disc; and a coil, the coil comprising a first wire segment, a second wire segment and a third wire segment connected in sequence; wherein the first wire segment is wound around the main coil disc, the second wire segment is wound around the auxiliary coil disc, and the third wire segment is wound around the main coil disc and annularly arranged outside the first wire segment and the second wire segment. The first wire segment and the second wire segment are integrally formed; and / or 2. The coil former of claim 1, wherein, The second wire segment and the third wire segment are integrally formed. The coil disc further comprises a first clamping groove and a third clamping groove arranged on the surface of the main coil disc, the first wire segment being arranged in the first clamping groove, and the third wire segment being arranged in the third clamping groove; and / or 3. The coil former of claim 1, wherein, The coil disc further comprises a second clamping groove arranged on the surface of the auxiliary coil disc, the second wire segment being arranged in the second clamping groove. The winding direction of the first wire segment is the same as the winding direction of the second wire segment; and / or 4. The coil former of claim 1, wherein, The winding direction of the second wire segment is the same as the winding direction of the third wire segment. A through groove is arranged on the main coil disc, and opposite sides of the inner wall of the through groove are respectively provided with at least one mounting position, and at least two mounting positions are matched to fix the auxiliary coil disc.

5. The coil former of claim 1, wherein, The coil disc further comprises a fixing structure arranged on the auxiliary coil disc, the fixing structure being movably connected with the mounting position to fix the auxiliary coil disc on the main coil disc.

6. The coil former of claim 5, wherein, The fixing structure comprises buckles, the buckles being spaced apart along the circumferential direction of the auxiliary coil disc, and each buckle is correspondingly provided with a groove.

7. The coil former of claim 6, wherein, The coil disc further comprises:

8. The coil former of claim 1, wherein, a first magnetic strip arranged on the side of the main coil disc away from the first wire segment and spaced apart along the circumferential direction of the main coil disc; a second magnetic strip arranged on the side of the auxiliary coil disc away from the second wire segment and spaced apart along the circumferential direction of the auxiliary coil disc; and a third magnetic strip arranged on the side of the main coil disc away from the third wire segment and spaced apart along the circumferential direction of the main coil disc. The coil disc further comprises an aluminum plate arranged on the side of the main coil disc away from the coil.

9. The coil former of claim 1, wherein, The coil disc comprises the coil disc according to any one of claims 1 to 9.

10. An electromagnetic cooking appliance, characterized by ​

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