CN210053612U

CN210053612U - Coil panel and cooking utensil

Info

Publication number: CN210053612U
Application number: CN201920022962.5U
Authority: CN
Inventors: 范吉昌; 易亮; 王开祥; 郭兴家; 吴金华; 张翼飞
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2019-01-03
Filing date: 2019-01-03
Publication date: 2020-02-11
Anticipated expiration: 2029-01-03

Abstract

The utility model discloses a coil panel and culinary art cooking utensil, wherein, the coil panel includes: a support structure located in the middle of the coil disk; one end of the first wire clamping rib is connected with the supporting structure, and the other end of the first wire clamping rib extends in the direction far away from the supporting structure; the second wire clamping rib is positioned below the first wire clamping rib, one end of the second wire clamping rib is connected with the supporting structure, and the other end of the second wire clamping rib extends in the direction far away from the supporting structure; the first wire clamping rib, the second wire clamping rib and the supporting structure are enclosed to form a first wire clamping gap for winding the enameled wire. The utility model discloses technical scheme provides a new wire winding mode to avoid the coil panel to produce the peculiar smell in the course of the work.

Description

Coil panel and cooking utensil

Technical Field

The utility model relates to a coil panel technical field, in particular to coil panel and culinary art cooking utensil.

Background

With the development of the technology, the coil panel is more and more widely used, for example, the coil panel is applied to cooking utensils such as induction cookers, electric cookers and the like. The coils of the existing coil disc are usually fixed by glue. When the coil works and generates heat, the glue can generate peculiar smell, and the use of the cooking utensil by a user is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a coil panel aims at providing a new wire winding mode, avoids coil panel to produce the peculiar smell in the use.

In order to achieve the above object, the utility model provides a coil panel, include:

a support structure located in the middle of the coil disk;

one end of the first wire clamping rib is connected with the supporting structure, and the other end of the first wire clamping rib extends in the direction far away from the supporting structure;

the second wire clamping rib is positioned below the first wire clamping rib, one end of the second wire clamping rib is connected with the supporting structure, and the other end of the second wire clamping rib extends in the direction far away from the supporting structure;

the first wire clamping rib, the second wire clamping rib and the supporting structure are enclosed to form a first wire clamping gap for winding the enameled wire.

Preferably, the number of the first wire clamping ribs is multiple, and the multiple first wire clamping ribs are radially arranged along the circumferential direction of the support structure; and/or the presence of a gas in the gas,

the quantity of second press from both sides the line muscle is a plurality of, and is a plurality of the second presss from both sides the line muscle along bearing structure's circumference is radial arrangement to make first press from both sides the line clearance along bearing structure's circumference is arranged.

Preferably, the width of the first clipping rib gradually increases outwards from the supporting structure; and/or the presence of a gas in the gas,

the width of the second wire clamping rib is gradually increased outwards from the supporting structure.

Preferably, the first wire clamping rib and the second wire clamping rib have straight sections, so that the radial section of the first wire clamping gap has straight sections; and/or the presence of a gas in the gas,

the first wire clamping rib and the second wire clamping rib are provided with stepped sections, so that the radial section of the first wire clamping gap is provided with stepped sections; and/or the presence of a gas in the gas,

the first wire clamping rib and the second wire clamping rib are provided with arc-shaped bent sections, so that the radial section of the first wire clamping gap is provided with the arc-shaped bent sections.

Preferably, the number of the coil windings wound in the first wire clamping gap is 2-5.

Preferably, the height H of the first wire clamping gap is 2-20 mm.

Preferably, the coil disk comprises an inner ring heating zone and an outer ring heating zone;

the first wire clamping gap comprises an inner wire clamping gap positioned in the inner ring heating area and an outer wire clamping gap positioned in the outer ring heating area, and the inner wire clamping gap and the outer wire clamping gap are arranged in an upward inclined mode and have different inclined angles.

Preferably, the outer wire clamping gap comprises a first wire winding gap and a second wire winding gap which are arranged up and down, and the inclination angles of the first wire winding gap and the second wire winding gap are different.

Preferably, the support structure comprises an inner support structure located in the inner ring heating zone and an outer support structure located in the outer ring heating zone;

the first wire clamping rib comprises a first inner wire clamping rib and a first outer wire clamping rib, and the second wire clamping rib comprises a second inner wire clamping rib and a second outer wire clamping rib;

the first inner wire clamping rib and the second inner wire clamping rib are obliquely arranged upwards from the inner support structure towards the direction of the outer ring heating area so as to form an inner wire clamping gap between the first inner wire clamping rib and the second inner wire clamping rib;

the first outer wire clamping rib and the second outer wire clamping rib are arranged in an upward inclined mode from the outer supporting structure to the direction away from the inner ring heating area, so that an outer wire clamping gap is formed between the first outer wire clamping rib and the second outer wire clamping rib.

Preferably, the coil disk comprises an inner ring heating zone and an outer ring heating zone; the first wire clamping gap comprises an inner wire clamping gap positioned in the inner ring heating area and an outer wire clamping gap positioned in the outer ring heating area;

the outer wire clamping gap comprises a first wire winding gap and a second wire winding gap which are vertically arranged, and/or the inner wire clamping gap comprises a third wire winding gap and a fourth wire winding gap which are vertically arranged;

the first winding gap and the second winding gap are respectively provided with a first coil winding and a second coil winding; and/or the third winding gap and the fourth winding gap are respectively provided with a third coil winding and a fourth coil winding.

Preferably, the first coil winding and the second coil winding are independent of each other; alternatively, the first and second electrodes may be,

the first coil winding is connected with the second coil winding in series; alternatively, the first and second electrodes may be,

the first coil winding is connected in parallel with the second coil winding.

Preferably, the third coil winding and the fourth coil winding are independent of each other; alternatively, the first and second electrodes may be,

the third coil winding is connected in series with the fourth coil winding; alternatively, the first and second electrodes may be,

the third coil winding is connected in parallel with the fourth coil winding.

Preferably, the coil panel includes a control circuit board, a first switching circuit is disposed on the control circuit board, and the first switching circuit is connected to the first coil winding and the second coil winding respectively to switch a connection relationship between the first coil winding and the second coil winding; and/or the presence of a gas in the gas,

and the control circuit board is provided with a second switching circuit, and the second switching circuit is respectively connected with the third coil winding and the fourth coil winding so as to switch the connection relation of the third coil winding and the fourth coil winding.

Preferably, the coil disk further includes:

a first inductor L1 and a first resistor R1 configured with the first coil winding;

a second inductor L2 and a second resistor R2 configured with the second coil winding;

a third inductor L3 and a third resistor R3 configured with the third coil winding;

a fourth inductor L4 and a fourth resistor R4 configured with the fourth coil winding;

the first inductance L1 is less than the second inductance L2 and/or a fourth inductance L4;

the first resistor R1 is greater than the second resistor R2 and/or fourth resistor R4;

the third inductance L3 is less than the fourth inductance L4 and/or second inductance L2;

the third resistor R3 is greater than the fourth resistor R4 and/or the second resistor R2.

Preferably, the height h1 of the coil winding located in the inner pinch gap corresponds to the height h2 of the coil winding located in the outer pinch gap.

Preferably, the first wire clamping gap comprises an inner arc section which extends in a downward bending manner from the support structure.

Preferably, the first wire clamping gap further comprises a transition section and an outer arc section; the inner arc section is downwards concave arc arrangement from the supporting structure, the outer arc section is upwards concave arc arrangement from the transition section, and the inner arc section and the outer arc section are connected through transition section circular arc transition.

Preferably, the first wire clamping rib is provided with a first heat dissipation port; and/or the presence of a gas in the gas,

and a second heat dissipation port is formed in the second wire clamping rib.

Preferably, a first gap is formed between two adjacent first wire clamping ribs, and the second wire clamping rib is located between two adjacent first wire clamping ribs corresponding to the first gap.

Preferably, the coil panel further comprises a coil support, the coil support is located below the second wire clamping rib, and a second wire clamping gap is formed by the second wire clamping rib, the coil support and the support structure in an enclosing manner;

the first wire clamping gap and the second wire clamping gap are communicated through the opening, and in the winding process of the enameled wire of the coil disc, when the enameled wire passes through the opening, the enameled wire enters the second wire clamping gap from the first wire clamping gap or enters the first wire clamping gap from the second gap, so that the enameled wire is wound between the first wire clamping gap and the second wire clamping gap through the opening in an alternating mode.

Preferably, the opening is arranged along the radial direction of the coil panel, and the enameled wire enters the second wire clamping gap from the first wire clamping gap or enters the first wire clamping gap from the second gap each time the enameled wire passes through the opening, so that the coils in the first wire clamping gap and the second wire clamping gap are sequentially and alternately wound.

In the technical scheme of the utility model, through the setting at first double-layered line muscle and second double-layered line muscle to form first double-layered line clearance between first double-layered line muscle and second double-layered line muscle, the enameled wire is coiled in the winding clearance, makes the coil by first double-layered line muscle and second double-layered line muscle centre gripping, thereby realizes the fixed to the coil, compares in current fixed mode, the fixed glue that need not use of coil, thereby can not produce the peculiar smell when the coil generates heat yet, be favorable to user's use; in addition, the efficiency of winding and fixing the coil is greatly improved, and the stability of the wound coil is greatly improved; it is worth explaining that, because the first wire clamping rib and the second wire clamping rib are both provided with free ends, the movement of the first wire clamping rib and the second wire clamping rib is more flexible, when a coil is wound in the first clamping gap, the coil can be favorably fed and clamped, and particularly when a plurality of layers of coils are arranged, the arrangement of the coils in the first clamping gap is favorably realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a coil panel according to the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is a schematic structural diagram of another embodiment of the coil panel of the present invention;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

fig. 5 is a schematic structural diagram of another embodiment of the coil panel of the present invention;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

fig. 7 is a schematic structural diagram of another embodiment of the coil panel according to the present invention;

FIG. 8 is a schematic view of the backside structure of FIG. 7;

FIG. 9 is a schematic cross-sectional view of FIG. 7;

fig. 10 is a schematic structural diagram of a coil panel according to another embodiment of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10 at A;

FIG. 12 is a schematic view of the detail of FIG. 10 without the coil winding wound thereon;

fig. 13 is a schematic view of an internal structure of a coil panel according to another embodiment of the present invention;

fig. 14 is a schematic structural diagram of a coil panel according to another embodiment of the present invention;

FIG. 15 is a schematic view of the backside structure of FIG. 14;

FIG. 16 is a schematic cross-sectional view of FIG. 14;

fig. 17 is a schematic view of an internal structure of a coil panel according to another embodiment of the present invention;

fig. 18 is a schematic view illustrating connection between a coil winding and a control circuit board according to an embodiment of the coil panel of the present invention;

fig. 19 is a schematic structural diagram of an embodiment of the cooking device of the present invention.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Also, the meaning of "and/or" appearing throughout is to include three versions, exemplified by "A and/or B" including either version A, or version B, or versions in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model mainly provides a coil panel mainly is applied to in the culinary art cooking utensil to increase the stability and the reliability of coil installation, simultaneously, avoid using glue in the fixed in-process of coil, avoid producing the peculiar smell in the use of coil panel. Simultaneously, through setting up the double-layered line muscle shape of different shapes for the coil panel can be applicable to different work platforms, heats the pan of difference. By improving the structure in the wire clamping gap, the arrangement shape, size, relative position relationship, etc. of the coil windings 800 located in the wire clamping gap are desirably changed to make the heating of the coil disk more uniform.

The specific structure of the coil disk will be mainly described below.

Referring to fig. 1 to 6, in an embodiment of the present invention, the coil panel includes:

a support structure 300, the support structure 300 being located in the middle of the coil disk;

one end of the first wire clamping rib 100 is connected with the support structure 300, and the other end of the first wire clamping rib 100 extends in a direction away from the support structure 300;

the second wire clamping rib 200 is positioned below the first wire clamping rib 100, one end of the second wire clamping rib 200 is connected with the support structure 300, and the other end extends in the direction far away from the support structure 300;

the first wire clamping rib 100, the second wire clamping rib 200 and the supporting structure 300 are enclosed to form a wire clamping gap for winding the enameled wire.

Specifically, in the present embodiment, the shape of the supporting structure 300 may be many, for example, a column, and the cross section of the supporting structure 300 may be a triangle, a circle, an ellipse, a square, etc., for example, a circle. The supporting structure is located in the middle of the coil panel, and it can be understood that the supporting structure is disposed in the middle area of the whole coil panel, and is not limited by the specific shape and composition of the coil panel (either the whole coil panel or the coil panel formed by combining a plurality of sub-coil panels). The first and

second clipping ribs

100 and 200 are provided on the side wall of the support structure 300. The connection modes of the first wire clamping rib 100, the second wire clamping rib 200 and the supporting structure 300 can be many, such as through screw connection, snap connection, gluing, etc., and of course, in some embodiments, the first wire clamping rib 100, the second wire clamping rib 200 and the supporting structure 300 can also be integrally formed.

The first wire-clamping rib 100 and the second wire-clamping rib 200 may be identical in shape and structure or may be different from each other as long as the first wire-clamping gap 400 can be formed between the first wire-clamping rib 100 and the second wire-clamping rib 200. Taking the first wire clamping rib 100 as an example, the second wire clamping rib 200 has the first wire clamping rib 100 cooperating to form the desired first wire clamping gap 400.

The shapes of the first wire clamping ribs 100 can be various, and different shapes can be set according to different shapes of cookware, so that the coil winding 800 in the first wire clamping gap 400 is matched with the shape of the cookware; the shape of the first wire clamping rib 100 can also be set according to different working condition requirements, in this embodiment, the shape is a strip shape. One end of the first wire clamping rib 100 is fixedly connected to the support structure 300, and the other end extends in a direction away from the support structure 300, and may extend in a direction perpendicular to the length direction of the support structure 300, or may extend obliquely upward or obliquely downward, and the specific extending manner is determined according to specific working conditions or actual requirements. The first wire-clamping rib 100 and the second wire-clamping rib 200 are made of an insulating hard material, and a hard plastic.

In order to improve the winding effect, the number of the first wire clamping ribs 100 is multiple, and the multiple first wire clamping ribs 100 are radially arranged along the circumferential direction of the support structure 300; and/or the number of the second wire clamping ribs 200 is multiple, and the multiple second wire clamping ribs 200 are radially arranged along the circumferential direction of the support structure 300, so that the wire clamping gaps are arranged along the circumferential direction of the support structure 300. That is, one end of each of the first wire clamping ribs 100 is connected to the support structure 300, and the other ends are arranged in a radial manner around the support structure 300; similarly, one end of each of the second wire-clamping ribs 200 is connected to the supporting structure 300, and the other end of each of the second wire-clamping ribs is arranged around the supporting structure 300 in a radial manner. In this way, the first wire clamping gap 400 is arranged along the circumferential direction of the support structure 300. When the enameled wire is wound in the first wire clamping gap 400, the enameled wire can be clamped at a plurality of positions, so that the stability of clamping the enameled wire is improved.

Regarding the relative position relationship of the first wire clamping rib 100 and the second wire clamping rib 200, the second wire clamping rib 200 is located below the first wire clamping rib 100 and can include multiple situations, and different situations can be set according to different requirements: in the first situation, the second wire clamping rib 200 is located right below the first wire clamping rib 100, and the section of the first wire clamping gap 400 is arranged in an inverted U shape; in the second case, a part of the second wire clamping rib 200 is located right below the first wire clamping rib 100, and a part of the second wire clamping rib is located right below a gap between two adjacent first wire clamping ribs 100; in the third situation, the second wire clamping rib 200 is completely located right below the gap between two adjacent first wire clamping ribs 100, and at this time, the projections of the first wire clamping rib 100 and the second wire clamping rib 200 in the horizontal plane do not intersect. The third case is specifically described below as an example:

a first gap 110 is formed between two adjacent first wire clamping ribs 100, a second gap 210 is formed between two adjacent second wire clamping ribs 200, the second wire clamping ribs 200 are located between two adjacent first wire clamping ribs 100 corresponding to the first gaps 110, and the first wire clamping ribs 100 are located between two adjacent second wire clamping ribs 200 corresponding to the second gaps 210. When first wire clamping rib 100, second wire clamping rib 200 and the integrative injection moulding of bearing structure 300, be favorable to the drawing of patterns to, so set up, make coil winding 800's both sides interval supported (first wire clamping rib 100 and second wire clamping rib 200 support in turn), thereby make coil winding 800 more stably by the centre gripping.

The number of layers of the enameled wire in the first wire clamping gap 400 can be set according to requirements, and specifically, the number of layers of the coil winding 800 wound in the wire clamping gap is 2-5. The number of layers is too small, which is not beneficial to improving the working efficiency of the coil panel, and the number of layers is too large, which is not beneficial to the stability of the winding of the coil winding 800. Regarding the distance between the first wire clamping rib 100 and the second wire clamping rib 200, namely, the height H of the wire clamping gap is 2-20 mm. The wire clamping gap is too small, so that the enameled wire is not favorably fed and wound, and the gap is too large, so that the stability of the wound enameled wire is not favorably improved.

In this embodiment, the first wire clamping gap 400 is formed between the first wire clamping rib 100 and the second wire clamping rib 200 by the arrangement of the first wire clamping rib 100 and the second wire clamping rib 200, and the enameled wire is wound in the winding gap, so that the coil is clamped by the first wire clamping rib 100 and the second wire clamping rib 200, thereby fixing the coil, and compared with the existing fixing mode, the coil is fixed without glue, so that no peculiar smell is generated when the coil generates heat, and the use of a user is facilitated; in addition, the efficiency of winding and fixing the coil is greatly improved, and the stability of the wound coil is greatly improved; it is worth to say that, because the first wire clamping rib 100 and the second wire clamping rib 200 both have free ends, the movement of the first wire clamping rib 100 and the second wire clamping rib 200 is more flexible, when a coil is wound in the first clamping gap, the coil can be conveniently fed and clamped, and especially when a plurality of layers of coils are arranged, the arrangement of the coil in the first clamping gap is facilitated.

It should be noted that, in some embodiments, the plurality of second wire-clamping ribs 200 are combined with the supporting structure 300 to form the coil bracket 500 for the coil winding 800 to be installed. In some embodiments, in order to improve the stability of the coil support 500, the positions of the connections between the adjacent second wire clamping ribs 200 may be many, for example, the end far from the support structure 300.

In some embodiments, in order to improve the stability of the enamel wire being clamped, the width of the first clamping rib 100 is gradually increased from the supporting structure 300 to the outside; and/or the width of the second clipping rib 200 is gradually increased from the supporting structure 300 to the outside. In this embodiment, the width of the first wire-clamping rib 100 may be increased, the width of the second wire-clamping rib 200 may be increased, or the widths of the first wire-clamping rib 100 and the second wire-clamping rib 200 may be increased simultaneously. First double-layered line muscle 100 and second press from both sides line muscle 200 and are the slice setting to, along with first double-layered line muscle 100 and second press from both sides line muscle 200 more far away from bearing structure 300's distance, the width of first double-layered line muscle 100 and second press from both sides line muscle 200 is big more, so, make first double-layered line muscle 100 and second press from both sides line muscle 200 centre gripping coil winding 800's area, along with the increase of coil winding 800 diameter and increase gradually. Thus, the stability of the first clamping gap 400 clamping the coil winding 800 is increased.

In order to improve the working stability of the coil panel and reduce the working temperature of the coil panel, a first heat dissipation opening is formed in the first wire clamping rib 100; and/or a second heat dissipation opening is formed in the second wire clamping rib 200. The first heat dissipation opening is formed along the length direction of the first wire clamping rib 100, and the second heat dissipation opening is formed along the length direction of the second wire clamping rib 200. The shape of the first heat dissipation opening and the second heat dissipation opening can be various, such as a long strip shape, a round shape, a polygon shape and the like. Through the fast setting of first thermovent and second heat dissipation for the coil panel is at the during operation, and the heat can be timely effluvium, thereby avoids the coil high temperature and influences coil panel work.

In some embodiments, in order to improve the compactness of the structure, a mounting groove is formed on a side of the second wire clamping rib 200, which is opposite to the first wire clamping rib 100, for mounting the magnetic strip 600. It is noted that the width and/or depth of the mounting groove gradually increase along the extending direction of the first wire clamping gap 400 (opened from the supporting structure 300), so that the mounting groove can mount the magnetic stripe 600 which gradually becomes wider or thicker to generate a stronger magnetic field at the peripheral portion of the coil disk. So, magnetic stripe 600 can be convenient install on the coil panel to with the coiling looks adaptation of coil (through the width that increases magnetic stripe 600 gradually, with the trend that the clearance between the two adjacent magnetic stripes 600 increases along with the increase of coil panel diameter), so that the heating of coil panel is more even.

The first wire clamping gap 400 can have different shapes to meet different disclosure requirements, and as will be described in the following by way of example, the first wire clamping rib 100 and the second wire clamping rib 200 have straight sections, so that the radial section of the first wire clamping gap 400 has straight sections; and/or the first and

second clipping ribs

100 and 200 have a stepped section such that a radial cross section of the first clipping gap 400 has a stepped section; and/or the first clamping rib 100 and the second clamping rib 200 have arc-shaped bent sections, so that the radial section of the first clamping gap 400 has arc-shaped bent sections.

In this embodiment, the first wire clamping gap 400 may be a straight segment entirely or a straight segment partially; all the ladder sections can be stepped sections, and part of the ladder sections can be stepped sections; the arc-shaped bent section can be totally or partially formed. When the first wire clamping rib 100 and the second wire clamping rib 200 are both straight wire clamping ribs, the first wire clamping gap 400 is a straight wire clamping gap, and when a coil is wound in the first wire clamping gap 400, the coil is arranged to be a straight ring (the number of coil layers is the same).

When the first wire clamping rib 100 and/or the second wire clamping rib 200 are/is a plate with a step, the first wire clamping gap 400 is a gap with a step, the number of layers of the coil is different, the positions with the large number of layers of the coil can be more, and the inner side, the middle part and the outer side of the ring can be all the same. Use the multilayer setting to take the outside as an example, so set up and make the coil outside the coil panel more, so, can compensate because the average magnetic field in the coil panel outside is weak (along with the increase of coil panel diameter, the clearance between the adjacent magnetic stripe 600 also increases gradually, leads to the region at coil place between the magnetic stripe 600, and magnetic field intensity weakens gradually) and the heating efficiency who leads to is not high for the inboard and the outside of coil panel are in the course of the work, and the heating is even.

The first wire clamping gap 400 can be formed by a plurality of first wire clamping ribs 100 and second wire clamping ribs 200 which are curved in an arc shape, for example, the first wire clamping ribs 100 are arranged in an arc shape (the coil is arranged along the length direction of the first wire clamping ribs 100), or the second wire clamping ribs 200 are arranged in an arc shape (the coil is arranged along the length direction of the second wire clamping ribs 200), or the first wire clamping ribs 100 and the second wire clamping ribs 200 are arranged in an arc shape (the coil is arranged along the length direction of the first wire clamping ribs 100 or the second wire clamping ribs 200). Take the first wire clamping rib 100 and the second wire clamping rib 200 to be arc-shaped, and the curves of the first wire clamping rib 100 and the second wire clamping rib 200 are equivalent, so that the bending extending direction of the first wire clamping gap 400 is equal to the first wire clamping rib 100 and the second wire clamping rib 200

The extension directions of the second wire clamping ribs 200 are the same, and the first wire clamping gaps 400 are uniformly arranged (namely, the width of the whole first wire clamping gap 400 is equivalent), so that the enameled wire can be uniformly clamped, and the uniform work of the coil panel can be facilitated.

In some embodiments, referring to FIGS. 14-16, to further improve the efficiency and uniformity of coil disk heating, the first wire clamping gap 400 includes an inner arc 850, the inner arc 850 curving downward from the support structure 300. The inner arc segment 850 may be formed in a variety of ways, such as a concave arc, a convex arc, or both. By setting the first wire clamping gap 400 to include the inner arc 850, the density of the enamel wire wound around the inner arc 850 (the number of turns of the enamel wire per unit radial dimension) is increased, thus contributing to the increase in the efficiency of the middle portion of the coil form. In general, the magnetic field intensity at the middle position of the coil panel is strong, and at the moment, the strong magnetic field intensity is fully utilized by arranging a plurality of coils, so that the working efficiency of the coil panel is improved. The inner arc 850 is set as a concave arc as an example, so that the density of the enameled wire wound around the inner arc 850 (the number of turns of the enameled wire in a unit radial dimension) is gradually reduced along the radial direction of the coil disk, that is, the density of the coil close to the supporting structure 300 in the inner arc 850 is relatively high, and the arrangement mode is adapted to the trend that the intensity of the magnetic field is gradually reduced from the middle to the periphery, so that the magnetic field intensity is further fully and reasonably utilized. When the outer side of the coil panel is provided with a plurality of layers of coils or the magnetic field intensity larger than the inner side is provided, the heating uniformity of the whole coil panel is favorably improved by increasing the heating efficiency of the inner side (inner arc section 850) of the coil panel.

In order to further improve the working efficiency of the coil panel, the shape of the first wire clamping gap 400 is set so that the coil winding 800 wound in the first wire clamping gap 400 has a function of concentrating magnetism, so as to fully utilize the magnetic field to improve the working efficiency of the coil panel. Specifically, the first pinch gap 400 further includes a transition section 860 and an outer arc section 870; the inner arc section 850 is disposed downward from the support structure 300 as a concave arc, the outer arc section 870 is disposed upward from the transition section 860 as a concave arc, and the inner arc section 850 and the outer arc section 870 are connected by a transition section 860 as an arc transition. The transition section 860 may be a straight section or a concave-arc section. Through the arrangement of the inner arc section 850, the outer arc section 870 and the transition section 860, the first wire clamping gap 400 gradually decreases and then gradually increases in the process of extending from the supporting structure 300 (the middle part of the coil panel) to the periphery, and the coil density in the winding and the first wire clamping gap 400 gradually decreases and then gradually increases. When the magnetic field passes through the coil winding 800 arranged in this way, the magnetic field passing through the coil is fully utilized, so that the working uniformity of the working efficiency of the coil panel is effectively improved.

In some embodiments, referring to fig. 10 to 12, in order to further improve the uniformity of the coil panel operation, the coil panel further includes a coil support 500, the coil support 500 is located below the second wire clamping rib 200, and a second wire clamping gap 430 is defined between the second wire clamping rib 200, the coil support 500 and the support structure 300; the gap and the second gap 430 are communicated through the opening 450, and during the winding process of the enameled wire of the coil disc, when the enameled wire passes through the opening 450, the enameled wire enters the second gap 430 from the gap, or enters the gap from the second gap 210, so that the enameled wire is wound alternately between the gap and the second gap 430 through the opening 450.

Specifically, in the present embodiment, the second wire clamping rib 200 is located below the gap between two adjacent first wire clamping ribs 100, that is, the first wire clamping rib 100 and the second wire clamping rib 200 are partially overlapped or not overlapped in the up-down direction. There is a gap between the second wire clamping rib 200 and the coil bracket 500, and the second wire clamping ribs 200 are circumferentially spaced apart from each other along the supporting structure 300, so that the first wire clamping gap 400 and the second wire clamping gap 430 are communicated through the gap between two adjacent second wire clamping ribs 200, that is, the number of the openings 450 may be multiple. During the winding process of the coil winding 800, the wire clamping gap may be switched at each opening 450 (switching between the first wire clamping gap 400 and the second wire clamping gap 430), or may be switched at only the same opening 450. The coil winding 800 can switch the wire clamping gap every time of winding one turn, or switch to another wire clamping gap after winding multiple turns, and switch back to the original wire clamping gap after winding multiple turns in another wire clamping gap to continue winding.

Taking the example of switching the gap every time the enameled wire passes through the same opening 450, the opening 450 is arranged along the radial direction of the coil disc, and the enameled wire enters the second gap 430 from the first gap 400 or enters the first gap 400 from the second gap 210 every time the enameled wire passes through the opening 450, so that the coils are wound alternately in the first gap 400 and the second gap 430 in sequence. Taking the current winding in the first wire clamping gap 400 as an example, when passing through the opening 450, the coil enters the second wire clamping gap 430 from the first wire clamping gap 400, and after being wound for one turn in the second wire clamping gap 430, the coil returns to the first wire clamping gap 400 through the same opening 450 to continue the winding, and the process is repeated alternately. Through so coiling coil winding 800 for the coil in first double-layered line clearance 400 and the even coiling of second double-layered line clearance 430, thereby by a wide margin the homogeneity when having improved coil panel work, and simultaneously, so coiling avoids after having coiled a double-layered line clearance (taking first double-layered line clearance 400 as an example), must set up changeover portion 860 and just can enter into another clearance (taking second double-layered line clearance 430 as an example) and continue the coiling, has avoided the existence of changeover portion 860 completely, makes the coiling of double-deck coil compacter, regular, and the homogeneity of work is better.

In some embodiments, to further improve the operating efficiency and uniformity of the coil disk operation, the coil disk includes an inner ring heating zone and an outer ring heating zone; the first wire clamping gap 400 comprises an inner wire clamping gap 410 located in the inner ring heating zone and an outer wire clamping gap 420 located in the outer ring heating zone, and the inner wire clamping gap 410 and the outer wire clamping gap 420 are arranged in an upward inclined mode and are different in inclined angle. It should be noted that, in the present embodiment, only two heating regions are taken as an example for illustration, in other embodiments, three, four or more heating regions may be included, and the positional relationship between the plurality of heating regions may be reasonably inferred by referring to the inner ring heating region and the outer ring heating region in the present embodiment. It should be understood that the technical solution of multiple heating zones is based on two heating zones in the present embodiment, and shall fall within the protection scope of the present application.

Specifically, in this embodiment, the coil panel includes at least two heating zones, one of which is an inner ring heating zone located in the center of the coil panel, and the inner ring heating zone may be arranged in a circular shape or a circular ring shape; the other is an outer ring heating area which is annularly arranged around the inner ring heating area, and the outer ring heating area is annularly arranged. The inner and outer ring heating zones are heated by different coil windings 800, respectively, to provide inner and

outer pinch gaps

410 and 420, respectively.

It is noted that the inner and outer

interline gaps

410 and 420 are inclined upward from the support structure 300, i.e., from the support structure 300 to a position away from the support structure 300. The inclination modes are various, and the inclination mode can be a straight line inclination mode, and can also be an arc inclination mode, and a concave arc inclination mode is taken as an example. Through setting up inner ring clearance and outer loop clearance to inclination different (slope is different when being the straight line slope, and camber is different when being the arc slope) for the coil of coil panel and the distance between the pan heated have the variety, thereby make the heating of coil panel have higher adaptability (can be adapted to the operating mode of multiple difference) and better homogeneity.

In some embodiments, in order to further improve the adaptability and uniformity of the operation of the coil panel, the outer wire clamping gap 420 includes a first wire winding gap 421 and a second wire winding gap 422 which are arranged up and down, and the first wire winding gap 421 and the second wire winding gap 422 are inclined at different angles. In this embodiment, the first winding gap 421 and the second winding gap 422 in the outer ring heating area are stacked, and the two winding gaps have different inclination angles, so that the distance between the coil winding 800 and the pot is further enriched, and the adaptability and uniformity are improved.

Regarding the difference in the inclination angle, when the inclination manner is the arc inclination, the arc inclination curvature is different, and referring to fig. 7 to 9, the curvatures R1, R2, and R3 of the extension lines, which are extended from the straight lines where the inner wire pinching gap 410, the first winding gap 421, and the second winding gap 422 are located, are different.

It should be noted that, during the use of the coil disc, the coil windings 800 in the first winding gap 421 and the second winding gap 422 may be connected in series or in parallel, or may work independently. The coil windings 800 in the first winding gap 421 and the coil windings 800 in the second winding gap 422 can be selectively used according to specific requirements of working conditions, and the coil windings 800 in the first winding gap 421 and the coil windings 800 in the second winding gap 422 can be used in series or in parallel.

The following provides a specific structural scheme for implementing the above embodiment:

the support structure 300 includes an inner support structure 310 located in the inner ring heating zone and an outer support structure 320 located in the outer ring heating zone;

the first wire clamping rib 100 comprises a first inner wire clamping rib 121 and a first outer wire clamping rib 122, and the second wire clamping rib 200 comprises a second inner wire clamping rib 221 and a second outer wire clamping rib 222;

the first inner wire clamping rib 121 and the second inner wire clamping rib 221 are obliquely arranged upwards from the inner support structure 310 towards the outer ring heating area, so that an inner wire clamping gap 410 is formed between the first inner wire clamping rib 121 and the second inner wire clamping rib 221;

the first outer wire clamping rib 122 and the second outer wire clamping rib 222 are disposed in an upward inclined manner from the outer support structure 320 toward a direction away from the inner ring heating area, so as to form an outer wire clamping gap 420 between the first outer wire clamping rib 122 and the second outer wire clamping rib. It should be noted that in other embodiments, the number of the supporting structures may be adjusted according to the partition condition of the heating area, and in this embodiment, only the basic inner and outer supporting structures are described. It should be understood that the technical solutions of the multiple supporting structures are based on the inner and outer supporting structures in the present embodiment, and shall fall into the protection scope of the present application.

The inner supporting structure 310 is arranged in the center of the coil panel in a columnar shape, the outer supporting structure 320 is arranged around the outer side of the inner supporting structure 310, and a gap is formed between the inner supporting structure and the outer supporting structure 320. The first inner clipping rib 121 and the second inner clipping rib 221 extend from the inner supporting structure 310 to the outer supporting structure 320, and the first inner clipping rib 121 is located above the second inner clipping rib 221 (there are various forms above, including several cases of facing, completely staggered and partially staggered, please refer to the above embodiment specifically). The first inner wire clamping rib 121 and the second inner wire clamping rib 221 may be linear or in the shape of a long arc, so as to ensure that the first inner wire clamping gap 410 is inclined upward.

Similarly, the first outer wire clamping rib 122 and the second outer wire clamping rib 222 extend from the outer support structure 320 to a direction away from the inner support structure 310, and the first outer wire clamping rib 122 is located above the second outer wire clamping rib 222 (there are various forms above, including several cases of facing, complete staggering, and partial staggering, specifically please refer to the above embodiment). The first outer wire clamping rib 122 and the second outer wire clamping rib 222 may be straight or arc, so as to ensure that the first outer wire clamping gap 420 is inclined upward. The outer support structure 320 is arranged in a circular ring shape, and the plurality of first outer wire clamping ribs 122 and the plurality of second outer wire clamping ribs 222 are arranged along the circumferential direction of the outer support structure 320.

In some embodiments, referring to fig. 17-19, to further improve the adaptability of the coil disk, the coil disk comprises an inner ring heating zone and an outer ring heating zone, and the utilization rate of the coil disk for energy is improved; the wire clamping gap comprises an inner wire clamping gap 410 located in the inner ring heating zone and an outer wire clamping gap 420 located in the outer ring heating zone; the outer wire clamping gap 420 comprises a first winding gap 421 and a second winding gap 422 which are arranged up and down, and/or the inner wire clamping gap 410 comprises a third winding gap 411 and a fourth winding gap 412 which are arranged up and down; the first winding gap 421 and the second winding gap 422 are respectively provided with a first coil winding 810 and a second coil winding 820; and/or, the third winding gap 411 and the fourth winding gap 412 are respectively provided with a third coil winding 830 and a fourth coil winding 840.

Specifically, in this embodiment, the inner ring heating area of the coil disk may be a single layer or may be provided in multiple layers, and for example, two layers are provided, and a third winding gap 411 and a fourth winding gap 412 are respectively provided, and a third coil winding 830 is wound in the corresponding third winding gap 411, and a fourth coil winding 840 is wound in the corresponding fourth winding gap 412. Similarly, the outer ring heating area of the coil panel may be a single layer or multiple layers, for example, two layers are respectively provided with a first winding gap 421 and a second winding gap 422, the first winding gap 421 is wound with a first coil winding 810, and the second winding gap 422 is wound with a second coil winding 820.

Wherein, with respect to the relationship between the coil windings 800:

the first coil winding 810 and the second coil winding 820 are independent of each other; alternatively, the first coil winding 810 is connected in series with the second coil winding 820; alternatively, the first coil winding 810 is connected in parallel with the second coil winding 820. The third coil winding 830 and the fourth coil winding 840 are independent of each other; alternatively, the third coil winding 830 is connected in series with the fourth coil winding 840; alternatively, the third coil winding 830 is connected in parallel with the fourth coil winding 840. Of course, in some embodiments, the first coil winding 810 and the third coil winding 830 (or the fourth coil winding 840) may be connected in series or in parallel, or the second coil winding 820 and the third coil winding 830 (or the fourth coil winding 840) may be connected in series or in parallel, depending on the particular requirements.

Because the distance between the coil windings 800 at different layers and the heated cookware is different, the coils at different positions are suitable for different cookware heating requirements. Specifically, for different working condition requirements, an inner ring heating area and an outer ring heating area can be selectively used, and the inner ring heating area and the outer ring heating area are simultaneously used. The following is a detailed description from the viewpoint of the heating position and the power of the coil disk:

when heating is required only in the middle, the third coil winding 830 and the fourth coil winding 840 are selected, or the third coil winding 830 and the fourth coil winding 840 are used in series or in parallel; the power is larger when the third coil winding 830 is used, the power is smaller when the fourth coil winding 840 is used, and the power when the third coil winding 830 and the fourth coil winding 840 are used in parallel is larger than the power when the third coil winding 830 is used alone;

when only the periphery needs to be heated, the first coil winding 810 and the second coil winding 820 are selected, or the first coil winding 810 and the second coil winding 820 are used in series or in parallel; the power is larger when the first coil winding 810 is used, the power is smaller when the second coil winding 820 is used, and the power when the first coil winding 810 and the second coil winding 820 are connected in parallel is larger than the power when the first coil winding 810 is used alone.

When the middle part and the periphery need to be heated, a group of coil windings 800 are selected for working in the inner ring heating area and the outer ring heating area respectively, such as selecting a third coil winding 830, and using the first coil winding 810 and the second coil winding 820 in parallel.

In order to improve the intelligent and convenient control of the work of the coil winding 800, the coil panel includes a control circuit board, a first switching circuit is arranged on the control circuit board, and the first switching circuit is respectively connected with the first coil winding 810 and the second coil winding 820 so as to switch the connection relationship between the first coil winding 810 and the second coil winding 820; and/or a second switching circuit is arranged on the control circuit board, and the second switching circuit is respectively connected with the third coil winding 830 and the fourth coil winding 840 to switch the connection relationship of the third coil winding 830 and the fourth coil winding 840. In this embodiment, by providing the first switching circuit, the first coil winding 810 or the second coil winding 820 is controlled to operate according to a requirement, or the first coil winding 810 and the second coil winding 820 are connected in series or in parallel. Similarly, by providing the second switching circuit, the operation of the third coil winding 830, or the operation of the fourth coil winding 840, or the series or parallel operation of the third coil winding 830 and the fourth coil winding 840 is controlled according to the requirement. Of course, in some embodiments, the first switching circuit and the second switching circuit are controlled by a main control circuit on the control circuit board, and the main control circuit may coordinate operations of the first switching circuit and the second switching circuit according to instructions or requirements, so that the operations of the coil panel operate according to requirements.

In some embodiments, to further improve the utilization of energy by the coil disk, and to extend the IGBT (Insulated Gate Bipolar Transistor) on the control circuit board Bipolar transistor) The coil disk further comprises:

a first inductor L1 and a first resistor R1 configured with the first coil winding 810;

a second inductor L2 and a second resistor R2 configured with the second coil winding 820;

a third inductor L3 and a third resistor R3 configured with the third coil winding 830;

a fourth inductor L4 and a fourth resistor R4 configured with the fourth coil winding 840;

Specifically, in this embodiment, first coil winding 810 is positioned above second coil winding 820 and third coil winding 830 is positioned above fourth coil winding 840, such that first coil winding 810 and third coil winding 830 are suitable for higher power operation and second coil winding 820 and fourth coil winding 840 are suitable for lower power operation. At this time, it is necessary to configure a smaller first inductance L1 and a larger first resistance R1 for the first coil winding 810, and a smaller second inductance L2 and a smaller second resistance R2 for the second coil winding 820, i.e., L1< L2, R1> R2; similarly, it is desirable to configure third coil winding 830 with a smaller third inductance L1, a larger third resistance R1, and fourth coil winding 840 with a smaller fourth inductance L4 and a smaller fourth resistance R4, i.e., L3< L4, R3> R4. The arrangement is such that different coil windings 800 can be selected for different operating requirements, and different coil windings 800 are provided with an inductance and a resistance adapted thereto, so that the corresponding coil winding 800 can be adapted to the operating requirements. So, when abundant reasonable utilization electric energy, also avoid the IGBT on the control circuit board to produce higher temperature to make IGBT's operating temperature, be favorable to prolonging IGBT's life simultaneously. The manner of configuring the inductance may be implemented by setting the number of turns of the coil winding 800, and the larger the number of turns of the coil, the larger the inductance, the smaller the number of turns of the coil, and the smaller the inductance. Accordingly, the number of turns of the first coil winding 810 may be set to be less than that of the second coil winding 820, and the number of turns of the third coil winding 830 may be set to be less than that of the fourth coil winding 840.

For the further purpose of achieving the coordinated operation of the coil windings 800 of the inner and outer ring heating zones, the inductance and resistance may be further defined, L1< L4, R1> R4; l3< L2, R3> R2, such that the first coil winding 810 (outer loop heating zone) can be used in conjunction with the fourth coil winding 840 (inner loop heating zone) such that the third coil winding 830 (inner loop heating zone) can be used in conjunction with the second coil winding 820 (outer loop heating zone). Therefore, the coil winding 800 on the coil can be configured and used at will, and the requirements of the coil on energy conservation and prolonging of the service life of the IGBT can be met.

It should be noted that, the distance description is only performed on two sets of coil windings 800 in the inner ring heating area and the outer ring heating area, and it can be understood that the above-described scheme may be generalized to provide multiple sets of coil windings 800 in each heating area, and may also be generalized to provide more heating areas. All belong to the utility model of this application to all belong to the above-mentioned popularization.

In some embodiments, referring to fig. 13, in order to adapt the coil disk to an existing work platform, different situations of the coil winding 800 are provided without increasing the total height of the coil disk, the height h1 of the coil winding 800 located in the inner pinch gap 410 is comparable to the height h2 of the coil winding 800 located in the outer pinch gap 420. When two layers of coil windings 800 are arranged in the outer ring heating area, the height of the two layers of coil windings 800 (overlapped up and down) is equivalent to the height of the coil windings 800 in the single layer of the inner ring heating area. Conversely, when two layers of coil windings 800 are disposed in the inner ring heating zone, the height of the two layers of coil windings 800 (which are overlapped up and down) is equivalent to the height of the coil windings 800 in the single layer of the outer ring heating zone. Since the coil winding 800 is obliquely disposed, the height of a single layer can be achieved to be equivalent to that of a double layer by adjusting the oblique angle of the coil winding 800. In this embodiment, the height h1 of the coil winding 800 in the inner wire clamping gap 410 is set to be equal to the height h2 of the coil winding 800 in the outer wire clamping gap 420, so that the coil panel fully and reasonably utilizes the space, and the extra increase of the height of the coil panel is avoided, so that the coil panel can be applied to the existing working platform, and the manufacturing cost of the cooking utensil is greatly reduced.

Referring to fig. 19, the present invention further provides a cooking device, which includes a base 700 and a coil panel, the specific structure of the coil panel refers to the above embodiments, and since the cooking device adopts all the technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are at least possessed, and are not repeated herein. Wherein the coil disk is mounted on the base 700.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A coil disc, comprising:

a support structure located in the middle of the coil disk;

2. The coil disk as claimed in claim 1, wherein the number of the first wire-clamping ribs is plural, and the plural first wire-clamping ribs are arranged radially in a circumferential direction of the support structure; and/or the presence of a gas in the gas,

3. The coil disk as claimed in claim 1, wherein the first clip rib has a width gradually increasing outward from the support structure; and/or the presence of a gas in the gas,

4. The coil disk as claimed in claim 1, wherein the first clip rib and the second clip rib have straight sections so that a radial cross section of the first clip gap has straight sections; and/or the presence of a gas in the gas,

5. The coil panel according to any of claims 1 to 4, wherein the number of layers of the coil winding wound in the first gap is 2 to 5.

6. The coil disk according to any of claims 1 to 4, characterized in that the height H of the first gap is 2 to 20 mm.

7. The coil disk of claim 1, wherein the coil disk includes at least an inner ring heating zone and an outer ring heating zone;

8. The coil disk as claimed in claim 7, wherein the outer clamping gap includes a first winding gap and a second winding gap arranged up and down, and the first winding gap and the second winding gap have different inclination angles.

9. The coil disk of claim 7, wherein the support structure includes at least an inner support structure located in the inner ring heating zone and an outer support structure located in the outer ring heating zone;

10. The coil disk of claim 1, wherein the coil disk includes an inner ring heating zone and an outer ring heating zone; the first wire clamping gap comprises an inner wire clamping gap positioned in the inner ring heating area and an outer wire clamping gap positioned in the outer ring heating area;

11. The coil disk as claimed in claim 10, wherein said first coil winding and said second coil winding are independent of each other; alternatively, the first and second electrodes may be,

the first coil winding is connected in parallel with the second coil winding.

12. A coil disk according to claim 10, wherein the third coil winding and the fourth coil winding are independent of each other; alternatively, the first and second electrodes may be,

the third coil winding is connected in parallel with the fourth coil winding.

13. The coil panel according to claim 10, wherein the coil panel comprises a control circuit board, and a first switching circuit is disposed on the control circuit board and connected to the first coil winding and the second coil winding respectively to switch the connection relationship of the first coil winding and the second coil winding; and/or the presence of a gas in the gas,

14. The coil disk of claim 10 further comprising a first inductance L1 and a first resistance R1 configured with the first coil winding;

15. The coil disk of claim 10, wherein the height h1 of the coil winding in the inner pinch gap is comparable to the height h2 of the coil winding in the outer pinch gap.

16. The coil disk of claim 1, wherein the first pinch gap comprises an inner arc segment that extends curvedly downward from the support structure.

17. The coil disk of claim 16, wherein the first pinch gap further comprises a transition section and an outer arc section; the inner arc section is downwards concave arc arrangement from the supporting structure, the outer arc section is upwards concave arc arrangement from the transition section, and the inner arc section and the outer arc section are connected through transition section circular arc transition.

18. The coil panel as claimed in claim 1, wherein the first wire clamping rib is provided with a first heat dissipating opening; and/or the presence of a gas in the gas,

and a second heat dissipation port is formed in the second wire clamping rib.

19. The coil disk as claimed in claim 1, wherein a first gap is formed between two adjacent first wire clamping ribs, and the second wire clamping rib is located between two adjacent first wire clamping ribs corresponding to the first gap.

20. The coil disk of claim 1, further comprising a coil support located below the second wire clamping rib, the coil support and the support structure enclosing a second wire clamping gap therebetween;

the first wire clamping gap and the second wire clamping gap are communicated through the opening, and in the winding process of the enameled wire of the coil disc, when the enameled wire passes through the opening, the enameled wire enters the second wire clamping gap from the first wire clamping gap or enters the first wire clamping gap from the second wire clamping gap, so that the enameled wire is wound between the first wire clamping gap and the second wire clamping gap through the opening in an alternating mode.

21. The coil disk as claimed in claim 20, wherein an opening is provided in a radial direction of the coil disk, and the enamel wire is passed through the opening from the first gap to the second gap or from the second gap to the first gap each time the enamel wire passes through the opening, so that the coils in the first gap and the second gap are alternately wound in sequence.

22. A cooking appliance comprising a coil disc according to any one of claims 1 to 21.