Coil pans and cooking utensils

Abstract

The present invention discloses a coil disk and cooking utensils, wherein the coil disk includes: a support structure located in the middle of the coil disk; a first clamping rib, one end of which is connected to the support structure and the other end of which extends away from the support structure; a second clamping rib, located below the first clamping rib, one end of which is connected to the support structure and the other end of which extends away from the support structure; the first clamping rib, the second clamping rib, and the support structure enclose a first clamping gap for winding enameled wire. The technical solution of the present invention provides a new winding method to prevent the coil disk from generating odor during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of coil disks, in particular to a coil disk and a cooking utensil. Background Art

[0002] With technological advancements, coil discs are becoming increasingly popular, for example in induction cookers and rice cookers. Conventional coil discs typically use glue to secure the coils. However, when the coils heat up during operation, the glue produces an unpleasant odor, which can be detrimental to user experience. Summary of the Invention

[0003] The main purpose of the present invention is to provide a coil disk, aiming to provide a new winding method to avoid the coil disk from generating odor during use.

[0004] To achieve the above-mentioned object, the coil disk proposed by the present invention comprises:

[0005] A support structure located in the middle of the coil disk;

[0006] a first clamping rib, one end of which is connected to the support structure and the other end of which extends away from the support structure;

[0007] a second clamping rib, the second clamping rib being located below the first clamping rib, one end of the second clamping rib being connected to the support structure, and the other end of the second clamping rib extending in a direction away from the support structure;

[0008] The first wire clamping rib, the second wire clamping rib, and the supporting structure together form a first wire clamping gap for winding the enameled wire.

[0009] Preferably, there are multiple first clamping ribs, and the multiple first clamping ribs are radially arranged along the circumference of the support structure; and / or,

[0010] There are multiple second clamping ribs, and the multiple second clamping ribs are radially arranged along the circumference of the support structure, so that the first clamping gaps are arranged along the circumference of the support structure.

[0011] Preferably, the width of the first clamping rib gradually increases from the supporting structure outwards; and / or,

[0012] The width of the second clamping rib gradually increases from the supporting structure outwards.

[0013] Preferably, the first clamping rib and the second clamping rib have straight sections, so that the radial cross section of the first clamping gap has a straight section; and / or,

[0014] The first clamping rib and the second clamping rib have a stepped section, so that the radial cross section of the first clamping gap has a stepped section; and / or,

[0015] The first clamping rib and the second clamping rib have arc-shaped curved sections, so that the radial cross-section of the first clamping gap has an arc-shaped curved section.

[0016] Preferably, the number of layers of the coil winding wound in the first clamping gap is 2 to 5 layers.

[0017] Preferably, the height H of the first wire clamping gap is 2-20 mm.

[0018] Preferably, the coil disk comprises an inner ring heating zone and an outer ring heating zone;

[0019] The first clamping gap includes an inner clamping gap located in the inner ring heating zone and an outer clamping gap located in the outer ring heating zone. The inner clamping gap and the outer clamping gap are inclined upward and have different inclination angles.

[0020] Preferably, the outer winding gap includes a first winding gap and a second winding gap arranged in an upper and lower manner, and the first winding gap and the second winding gap have different inclination angles.

[0021] Preferably, the support structure includes an inner support structure located in the inner ring heating zone and an outer support structure located in the outer ring heating zone;

[0022] The first clamping rib includes a first inner clamping rib and a first outer clamping rib, and the second clamping rib includes a second inner clamping rib and a second outer clamping rib;

[0023] The first inner clamping rib and the second inner clamping rib are arranged upwardly and tilted from the inner support structure toward the outer ring heating zone to form an inner clamping gap between the first inner clamping rib and the second inner clamping rib;

[0024] The first outer clamping rib and the second outer clamping rib are arranged upwardly and tilted from the outer support structure in a direction away from the inner ring heating zone to form an outer clamping gap between the first outer clamping rib and the second outer clamping rib.

[0025] Preferably, the coil disk includes an inner ring heating zone and an outer ring heating zone; the first wire clamping gap includes an inner wire clamping gap located in the inner ring heating zone and an outer wire clamping gap located in the outer ring heating zone;

[0026] The outer wire clamping gap includes a first winding gap and a second winding gap arranged in an upper and lower manner, and / or the inner wire clamping gap includes a third winding gap and a fourth winding gap arranged in an upper and lower manner;

[0027] The first winding gap and the second winding gap are provided with a first coil winding and a second coil winding, respectively; and / or the third winding gap and the fourth winding gap are provided with a third coil winding and a fourth coil winding, respectively.

[0028] Preferably, the first coil winding and the second coil winding are independent of each other; or,

[0029] The first coil winding is connected in series with the second coil winding; or,

[0030] The first coil winding is connected in parallel with the second coil winding.

[0031] Preferably, the third coil winding and the fourth coil winding are independent of each other; or,

[0032] The third coil winding is connected in series with the fourth coil winding; or,

[0033] The third coil winding is connected in parallel with the fourth coil winding.

[0034] Preferably, the coil disk includes a control circuit board, on which a first switching circuit is provided, the first switching circuit being connected to the first coil winding and the second coil winding, respectively, to switch the connection relationship between the first coil winding and the second coil winding; and / or,

[0035] A second switching circuit is provided on the control circuit board. The second switching circuit is connected to the third coil winding and the fourth coil winding respectively to switch the connection relationship between the third coil winding and the fourth coil winding.

[0036] Preferably, the coil disk further comprises:

[0037] a first inductor and a first resistance configured with the first coil winding;

[0038] a second inductor and a second resistor configured with the second coil winding;

[0039] a third inductor and a third resistor configured with the third coil winding;

[0040] a fourth inductor and a fourth resistor configured with the fourth coil winding;

[0041] The first inductance is smaller than the second inductance and / or the fourth inductance;

[0042] The first resistor is greater than the second resistor and / or the fourth resistor;

[0043] The third inductance is smaller than the fourth inductance and / or the second inductance;

[0044] The third resistor is greater than the fourth resistor and / or the second resistor.

[0045] Preferably, the height h1 of the coil winding located in the inner clamping gap is equivalent to the height h2 of the coil winding located in the outer clamping gap.

[0046] Preferably, the first clamping gap includes an inner arc segment, and the inner arc segment bends and extends downward from the supporting structure.

[0047] Preferably, the first clamping gap also includes a transition section and an outer arc section; the inner arc section is set in a concave arc from the support structure downward, and the outer arc section is set in a concave arc from the transition section upward, and the inner arc section and the outer arc section are connected by a transition section circular arc.

[0048] Preferably, a first heat dissipation opening is provided on the first clamping rib; and / or,

[0049] A second heat dissipation opening is provided on the second clamping rib.

[0050] Preferably, there is a first gap between two adjacent first clamping ribs, and the second clamping rib is located between two adjacent first clamping ribs corresponding to the first gap.

[0051] Preferably, the coil disk further comprises a coil support, wherein the coil support is located below the second clamping rib, and the second clamping rib, the coil support and the supporting structure enclose a second clamping gap;

[0052] The first wire clamping gap and the second wire clamping gap are connected through an opening. During the winding process of the enameled wire of the coil disk, when the enameled wire passes through the opening, it enters from the first wire clamping gap to the second wire clamping gap, or enters from the second gap to the first wire clamping gap, so that the enameled wire is alternately wound between the first wire clamping gap and the second wire clamping gap through the opening.

[0053] Preferably, the opening is arranged along the radial direction of the coil disk, and each time the enameled wire passes through the opening, it enters from the first wire clamping gap to the second wire clamping gap, or from the second gap to the first wire clamping gap, so that the coils in the first wire clamping gap and the second wire clamping gap are wound alternately in sequence.

[0054] In the technical solution of the present invention, a first wire clamping gap is formed between the first wire clamping rib and the second wire clamping rib by arranging the first wire clamping rib and the second wire clamping rib, and the enameled wire is wound in the winding gap so that the coil is clamped by the first wire clamping rib and the second wire clamping rib, thereby achieving fixation of the coil. Compared with the existing fixing method, the fixation of the coil does not require the use of glue, so that no odor will be generated when the coil is heated, which is beneficial to user use; in addition, the efficiency of winding and fixing the coil is greatly increased by this method, and the stability of the coil after winding is greatly increased; it is worth noting that since the first wire clamping rib and the second wire clamping rib both have free ends, the movement of the first wire clamping rib and the second wire clamping rib is more flexible, and when the coil is wound in the first clamping gap, it is beneficial to the entry and clamping of the coil, especially when multiple layers of coils are arranged, it is beneficial to the arrangement of the coil in the first clamping gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0056] Figure 1 This is a schematic structural diagram of an embodiment of a coil disk of the present invention;

[0057] Figure 2 for Figure 1 Schematic diagram of the cross-section structure;

[0058] Figure 3 A schematic structural diagram of another embodiment of the coil disk of the present invention;

[0059] Figure 4 for Figure 3 Schematic diagram of the cross-section structure;

[0060] Figure 5 This is a schematic structural diagram of another embodiment of the coil disk of the present invention;

[0061] Figure 6 for Figure 5 Schematic diagram of the cross-section structure;

[0062] Figure 7 This is a schematic structural diagram of another embodiment of the coil disk of the present invention;

[0063] Figure 8 for Figure 7 Schematic diagram of the back structure;

[0064] Figure 9 for Figure 7Schematic diagram of the cross-section structure;

[0065] Figure 10 This is a structural schematic diagram of another embodiment of the coil disk of the present invention;

[0066] Figure 11 for Figure 10 A partial enlarged view of point A in the middle;

[0067] Figure 12 for Figure 10 Detailed structural diagram when the coil winding is not wound;

[0068] Figure 13 A schematic diagram of the internal structure of a coil disk according to another embodiment of the present invention;

[0069] Figure 14 This is a structural schematic diagram of another embodiment of the coil disk of the present invention;

[0070] Figure 15 for Figure 14 Schematic diagram of the back structure;

[0071] Figure 16 for Figure 14 Schematic diagram of the cross-section structure;

[0072] Figure 17 A schematic diagram of the internal structure of a coil disk according to another embodiment of the present invention;

[0073] Figure 18 A schematic diagram of the connection between the coil winding and the control circuit board in an embodiment of the coil disk of the present invention;

[0074] Figure 19 This is a schematic structural diagram of an embodiment of a cooking utensil of the present invention.

[0075] Description of Figure Numbers:

[0076]

[0077] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0079] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0080] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. At the same time, the meaning of "and / or" appearing in the full text is to include three solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0081] The present invention mainly proposes a coil disk, which is mainly used in cooking utensils to increase the stability and reliability of coil installation. At the same time, it avoids the use of glue in the process of fixing the coil and avoids the generation of odor during the use of the coil disk. At the same time, by setting different shapes of clamping ribs, the coil disk can be applied to different working platforms to heat different pots. By improving the structure in the clamping gap, the arrangement shape, size, relative position relationship, etc. of the coil winding 800 located in the clamping gap are changed as desired, so that the heating of the coil disk is more uniform.

[0082] The specific structure of the coil disk will be mainly described below.

[0083] Reference Figures 1 to 6 In an embodiment of the present invention, the coil disk comprises:

[0084] A support structure 300, wherein the support structure 300 is located in the middle of the coil disk;

[0085] a first clamping rib 100, one end of which is connected to the support structure 300 and the other end of which extends away from the support structure 300;

[0086] A second clamping rib 200, located below the first clamping rib 100, with one end of the second clamping rib 200 connected to the support structure 300 and the other end extending away from the support structure 300;

[0087] The first clamping rib 100 , the second clamping rib 200 , and the support structure 300 together form a clamping gap for winding the enameled wire.

[0088] Specifically, in this embodiment, the support structure 300 can have many shapes. Taking a columnar configuration as an example, the cross-section of the support structure 300 can be triangular, circular, elliptical, square, etc., taking a circular configuration as an example. The support structure is located in the middle of the coil disk, which can be understood as setting the support structure in the middle area of ​​the entire coil disk, and is not restricted by the specific shape and composition of the coil disk (it can be a whole coil disk or a coil disk composed of multiple sub-coil disks). The first clamping rib 100 and the second clamping rib 200 are arranged on the side wall of the support structure 300. There are many ways to connect the first clamping rib 100 and the second clamping rib 200 to the support structure 300, such as by screw connection, snap connection, gluing, etc. Of course, in some embodiments, the first clamping rib 100 and the second clamping rib 200 can also be integrally formed with the support structure 300.

[0089] The shapes and structures of the first clamping rib 100 and the second clamping rib 200 can be the same or different, as long as the first clamping gap 400 can be formed between the first clamping rib 100 and the second clamping rib 200. The first clamping rib 100 is used as an example below. The second clamping rib 200 cooperates with the first clamping rib 100 to enclose and form the required first clamping gap 400.

[0090] The first clamping rib 100 can have many shapes, and can be set to different shapes according to different shapes of cookware, so that the coil winding 800 in the first clamping gap 400 is adapted to the shape of the cookware; the shape of the first clamping rib 100 can also be set according to different working conditions. In this embodiment, a long strip shape is taken as an example. One end of the first 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. It can extend in a longitudinal direction perpendicular to the support structure 300, or it can extend obliquely upward or obliquely downward. The specific extension method is determined according to the specific working conditions or actual needs. The first clamping rib 100 and the second clamping rib 200 are made of insulating hard material and hard plastic.

[0091] In order to improve the winding effect, the number of the first clamping ribs 100 is multiple, and the multiple first clamping ribs 100 are arranged radially along the circumference of the support structure 300; and / or the number of the second clamping ribs 200 is multiple, and the multiple second clamping ribs 200 are arranged radially along the circumference of the support structure 300, so that the clamping gaps are arranged along the circumference of the support structure 300. That is, one end of the multiple first clamping ribs 100 is connected to the support structure 300, and the other end is arranged radially around the support structure 300; similarly, one end of the multiple second clamping ribs 200 is connected to the support structure 300, and the other end is arranged radially around the support structure 300. In this way, the first clamping gaps 400 are arranged along the circumference of the support structure 300. When the enameled wire is wound into the first clamping gaps 400, it can be clamped at multiple positions, thereby improving the stability of the enameled wire clamping.

[0092] Regarding the relative positional relationship between the first clamping rib 100 and the second clamping rib 200, there are multiple situations in which the second clamping rib 200 is located below the first clamping rib 100, and different situations can be set according to different needs: in the first situation, the second clamping rib 200 is located directly below the first clamping rib 100, and the cross-section of the first clamping gap 400 is set in an inverted U shape; in the second situation, part of the second clamping rib 200 is located directly below the first clamping rib 100, and part of it is located directly below the gap between the two adjacent first clamping ribs 100; in the third situation, the second clamping rib 200 is completely located directly below the gap between the two adjacent first clamping ribs 100, and at this time, the projections of the first clamping rib 100 and the second clamping rib 200 in the horizontal plane do not intersect. The following is a specific explanation taking the third situation as an example:

[0093] A first gap 110 is defined between two adjacent first clamping ribs 100, and a second gap 210 is defined between adjacent second clamping ribs 200. The second clamping ribs 200 are positioned between the two adjacent first clamping ribs 100 corresponding to the first gap 110, and the first clamping ribs 100 are positioned between the two adjacent second clamping ribs 200 corresponding to the second gap 210. When the first clamping ribs 100, the second clamping ribs 200, and the support structure 300 are integrally injection molded, this facilitates demolding. Furthermore, this arrangement allows for support at intervals on both sides of the coil winding 800 (alternating support by the first clamping ribs 100 and the second clamping ribs 200), thereby enabling the coil winding 800 to be more stably clamped.

[0094] The number of layers of enameled wire in the first clamping gap 400 can be set according to demand. Specifically, the number of layers of the coil winding 800 wound in the clamping gap is 2 to 5 layers. Too few layers is not conducive to improving the working efficiency of the coil disk, and too many layers is not conducive to the winding stability of the coil winding 800. The distance between the first clamping rib 100 and the second clamping rib 200, that is, the height H of the clamping gap is 2 to 20 mm. If the clamping gap is too small, it is not conducive to the entry and winding of the enameled wire, and if the gap is too large, it is not conducive to the stability of the enameled wire after winding.

[0095] In this embodiment, by setting the first wire clamping rib 100 and the second wire clamping rib 200, a first wire clamping gap 400 is formed between 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 achieving the fixation of the coil. Compared with the existing fixing method, the fixation of the coil does not require the use of glue, so that no odor will be generated when the coil is heated, which is beneficial to the use of the user; in addition, the efficiency of winding and fixing the coil is greatly increased by this method, and the stability of the coil after winding is greatly increased; it is worth noting that since 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, and when the coil is wound in the first clamping gap, it is beneficial to the entry and clamping of the coil, especially when multiple layers of coils are set, it is beneficial to the arrangement of the coil in the first clamping gap.

[0096] It is worth noting that in some embodiments, multiple second clamping ribs 200 are connected to the support structure 300 to form a coil support 500 for mounting the coil winding 800. In some embodiments, to improve the stability of the coil support 500, adjacent second clamping ribs 200 are interconnected. The connection can be at various locations, with one end away from the support structure 300 being used as an example.

[0097] In some embodiments, to improve the stability of the enameled wire clamping, the width of the first clamping rib 100 gradually increases outward from the support structure 300; and / or the width of the second clamping rib 200 gradually increases outward from the support structure 300. In this embodiment, the width of either the first clamping rib 100 or the second clamping rib 200 can be increased, or both can be increased simultaneously. The first and second clamping ribs 100 and 200 are arranged in a sheet-like shape, and their widths increase as they are farther from the support structure 300. This ensures that the area of ​​the coil winding 800 clamped by the first and second clamping ribs 100 and 200 gradually increases as the diameter of the coil winding 800 increases. This helps to improve the stability of the first clamping gap 400 in clamping the coil winding 800.

[0098] In order to improve the stability of the coil disk and reduce the temperature of the coil disk during operation, a first heat dissipation port is provided on the first clamping rib 100; and / or a second heat dissipation port is provided on the second clamping rib 200. The first heat dissipation port is provided along the length direction of the first clamping rib 100, and the second heat dissipation port is provided along the length direction of the second clamping rib 200. The first heat dissipation port and the second heat dissipation port can have many shapes, such as long strips, circles, polygons, etc. By setting the first heat dissipation port and the second heat dissipation port, the heat of the coil disk can be dissipated in time when the coil disk is working, thereby preventing the coil temperature from being too high and affecting the operation of the coil disk.

[0099] In some embodiments, in order to improve the compactness of the structure, a mounting groove is provided on the side of the second clamping rib 200 facing away from the first clamping rib 100 for installation of the magnetic strip 600. It is worth noting that the width and / or depth of the mounting groove gradually increases along the extension direction of the first clamping gap 400 (opened from the self-supporting structure 300), so that the mounting groove can be installed with a magnetic strip 600 that gradually becomes wider or thicker, so as to generate a stronger magnetic field at the peripheral portion of the coil disk. In this way, the magnetic strip 600 can be conveniently installed on the coil disk and adapted to the winding of the coil (by gradually increasing the width of the magnetic strip 600 to reduce the tendency of the gap between two adjacent magnetic strips 600 to increase as the diameter of the coil disk increases), so that the heating of the coil disk is more uniform.

[0100] The first wire clamping gap 400 can have different shapes to adapt to different public needs. The following are a few examples to illustrate: the first wire clamping rib 100 and the second wire clamping rib 200 have a straight section, so that the radial cross-section of the first wire clamping gap 400 has a straight section; and / or, the first wire clamping rib 100 and the second wire clamping rib 200 have a stepped section, so that the radial cross-section of the first wire clamping gap 400 has a stepped section; and / or, the first wire clamping rib 100 and the second wire clamping rib 200 have an arc-shaped curved section, so that the radial cross-section of the first wire clamping gap 400 has an arc-shaped curved section.

[0101] In this embodiment, the first clamping gap 400 can be entirely or partially straight; entirely or partially stepped; entirely or partially curved. When both the first clamping rib 100 and the second clamping rib 200 are straight, the first clamping gap 400 is a straight gap. When the coil is wound into the first clamping gap 400, the coil is arranged in a straight ring (with the same number of coil layers).

[0102] When the first clamping rib 100 and / or the second clamping rib 200 is a stepped plate, the first clamping gap 400 is a stepped gap. In this case, the number of coil layers is different, and there can be many positions with more coil layers, such as the inside, middle, and outside of the ring. Taking the multi-layer arrangement on the outside as an example, such an arrangement results in more coils on the outside of the coil disk. In this way, the low heating efficiency caused by the weak average magnetic field on the outside of the coil disk (as the diameter of the coil disk increases, the gap between adjacent magnetic strips 600 also gradually increases, resulting in the magnetic field strength in the area where the coils are located between the magnetic strips 600 gradually weakens) can be compensated, so that the inside and outside of the coil disk are heated evenly during operation.

[0103] The first clamping rib 100 and the second clamping rib 200 that cause the first clamping gap 400 to be curved in an arc shape can be in many forms, such as the first clamping rib 100 being arranged in an arc shape (the coils are arranged along the length direction of the first clamping rib 100), or the second clamping rib 200 being arranged in an arc shape (the coils are arranged along the length direction of the second clamping rib 200), or both the first clamping rib 100 and the second clamping rib 200 being arranged in an arc shape (the coils are arranged along the length direction of the first clamping rib 100 or the second clamping rib 200). Taking the example of the first clamping rib 100 and the second clamping rib 200 both being arranged in an arc shape, and the curves of the first clamping rib 100 and the second clamping rib 200 being similar, the bending extension direction of the first clamping gap 400 is the same as the extension direction of the first clamping rib 100 and the second clamping rib 200, and the first clamping gap 400 being uniformly arranged (i.e., the width of the entire first clamping gap 400 is the same), which is beneficial for uniform clamping of the enameled wire, thereby facilitating uniform operation of the coil bobbin.

[0104] In some embodiments, see Figures 14-16 In order to further improve the efficiency and uniformity of heating the coil disk, the first wire clamping gap 400 includes an inner arc segment 850, and the inner arc segment 850 bends and extends downward from the support structure 300. The inner arc segment 850 can have many forms, such as a concave arc, a convex arc, or a concave arc and a convex arc at the same time. By setting the first wire clamping gap 400 to include the inner arc segment 850, the density of the enameled wire wound on the inner arc segment 850 (the number of turns of the enameled wire per unit radial dimension) is increased, which is beneficial to increase the efficiency of the middle part of the coil disk. Normally, the magnetic field strength in the middle of the coil disk is stronger. At this time, by setting more coils, the stronger magnetic field strength can be fully utilized, thereby improving the working efficiency of the coil disk. For example, by designing inner arc segment 850 as a concave arc, the density of the enameled wire wound within inner arc segment 850 (the number of enameled wire turns per unit radial dimension) gradually decreases along the radial direction of the coil disk. Specifically, the coil density is higher within inner arc segment 850 near support structure 300. This arrangement aligns with the tendency for magnetic field strength to gradually decrease from the center toward the periphery, thereby further optimizing and utilizing the magnetic field strength. When multiple layers of coils are arranged on the outside of the coil disk or a magnetic field strength greater than that on the inside is employed, this increases heating efficiency on the inside (inner arc segment 850), thereby improving heating uniformity across the entire coil disk.

[0105] To further improve the operating efficiency of the coil disk, the shape of the first clamping gap 400 is configured so that the coil winding 800 wound therein has a magnetic field focusing function, fully utilizing the magnetic field to improve the operating efficiency of the coil disk. Specifically, the first clamping gap 400 includes a transition section 860 and an outer arc section 870. The inner arc section 850 is arranged in a concave arc downward from the support structure 300, and the outer arc section 870 is arranged in a concave arc upward from the transition section 860. The inner and outer arc sections 850 and 870 are connected by a circular arc transition in the transition section 860. The transition section 860 can be either a straight section or a concave arc section. The configuration of the inner arc section 850, outer arc section 870, and transition section 860 ensures that the first clamping gap 400 gradually decreases and then increases as it extends from the support structure 300 (the center of the coil disk) toward the periphery. This also causes the coil density within the first clamping gap 400 to gradually decrease and then increase. When the magnetic field passes through the coil winding 800 configured in this way, the magnetic field passing through the coil is fully utilized, thereby effectively improving the working efficiency and working uniformity of the coil disk.

[0106] In some embodiments, reference Figures 10-12In order to further improve the uniformity of the coil disk operation, the coil disk also includes a coil bracket 500, which is located below the second wire clamping rib 200. The second wire clamping rib 200, the coil bracket 500 and the support structure 300 form a second wire clamping gap 430; the wire clamping gap and the second wire clamping gap 430 are connected through an opening 450. During the winding process of the enameled wire of the coil disk, when the enameled wire passes through the opening 450, it enters the second wire clamping gap 430 from the wire clamping gap, or enters the wire clamping gap from the second gap 210, so that the enameled wire is alternately wound between the wire clamping gap and the second wire clamping gap 430 through the opening 450.

[0107] Specifically, in this embodiment, the second clamping rib 200 is located below the gap between two adjacent first clamping ribs 100, meaning that the first clamping rib 100 and the second clamping rib 200 partially or completely overlap in the vertical direction. A gap exists between the second clamping rib 200 and the coil support 500. Furthermore, because the second clamping ribs 200 are spaced apart circumferentially along the support structure 300, the first clamping gap 400 and the second clamping gap 430 are connected through the gap between two adjacent second clamping ribs 200. This means that there can be multiple openings 450. During the winding process of the coil winding 800, the clamping gap can be switched at each opening 450 (between the first clamping gap 400 and the second clamping gap 430), or the clamping gap can be switched only at the same opening 450. The coil winding 800 can switch the clamping gap after each winding, or switch to another clamping gap after winding multiple turns, and then switch back to the original clamping gap after winding multiple turns in the other clamping gap and continuing winding.

[0108] Taking the switching of the clamping gap each time the coil passes through the same opening 450 as an example, the opening 450 is arranged along the radial direction of the coil disk. Each time the enameled wire passes through the opening 450, it enters the second clamping gap 430 from the first clamping gap 400, or enters the first clamping gap 400 from the second gap 210, so that the coils are wound alternately in the first clamping gap 400 and the second clamping gap 430. Taking the winding in the first clamping gap 400 as an example, when passing through the opening 450, the coil enters the second clamping gap 430 from the first clamping gap 400, and after winding one circle in the second clamping gap 430, it returns to the first clamping gap 400 through the same opening 450 to continue winding, and so on. By winding the coil winding 800 in this way, the coils in the first clamping gap 400 and the second clamping gap 430 are evenly wound, thereby greatly improving the uniformity of the coil disk during operation. At the same time, such winding avoids the need to set a transition section 860 after winding a clamping gap (taking the first clamping gap 400 as an example) before entering another gap (taking the second clamping gap 430 as an example) to continue winding, completely avoiding the existence of the transition section 860, making the winding of the double-layer coil more compact and regular, and the working uniformity better.

[0109] In some embodiments, in order to further improve the working efficiency and uniformity of the coil disk, the coil disk includes an inner ring heating zone and an outer ring heating zone; the first clamping gap 400 includes an inner clamping gap 410 located in the inner ring heating zone and an outer clamping gap 420 located in the outer ring heating zone, and the inner clamping gap 410 and the outer clamping gap 420 are tilted upward and have different tilt angles. It is worth noting that in this embodiment, only two heating zones are used as an example for explanation. In other embodiments, three, four or even more heating zones may be included. The positional relationship between multiple heating zones can be reasonably inferred with reference to the inner ring heating zone and the outer ring heating zone in this embodiment. It should be understood that the technical solution of multiple heating zones is based on the two heating zones in this embodiment and should fall within the scope of protection of this application.

[0110] Specifically, in this embodiment, the coil disk includes at least two heating zones: an inner ring heating zone located in the center of the coil disk, which can be arranged in a circular or annular shape; and an outer ring heating zone located around the inner ring heating zone, which is arranged in an annular shape. The inner and outer ring heating zones are heated by different coil windings 800, respectively, thereby providing inner and outer clamping gaps 410 and 420, respectively.

[0111] It is worth noting that the upwardly inclined inner and outer clamping gaps 410 and 420 start from the support structure 300, i.e., they are inclined from the support structure 300 upwards, away from the support structure 300. There are various ways to tilt, including a straight line or an arc, with a concave arc being used as an example. By setting the inner and outer ring gaps at different angles (different slopes when tilted straight, and different curvatures when tilted arc), the distance between the coils of the coil disk and the heated cookware is varied, thereby making the heating of the coil disk more adaptable (adaptable to a variety of different working conditions) and more uniform.

[0112] In some embodiments, to further improve the adaptability and uniformity of the coil disk, the outer winding gap 420 includes a first winding gap 421 and a second winding gap 422 arranged in an upper and lower arrangement, with the first winding gap 421 and the second winding gap 422 having different inclination angles. In this embodiment, the first winding gap 421 and the second winding gap 422 in the outer ring heating zone are stacked and arranged at different inclination angles, further enriching the distance between the coil winding 800 and the cookware, improving adaptability and uniformity.

[0113] Regarding the different tilt angles, when the tilting method is arc tilting, it is reflected in the different curvatures of the arc tilt. Figures 7-9 The figure shows the extension lines of the straight lines where the inner wire clamping gap 410, the first winding gap 421 and the second winding gap 422 are located, and the curvatures R1, R2 and R3 of each extension line are different.

[0114] It is worth noting that during use of the coil disk, the coil windings 800 in the first winding gap 421 and the second winding gap 422 can be connected in series, in parallel, or independently of each other. Depending on specific operating requirements, 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, or the coil windings 800 in the first winding gap 421 and the second winding gap 422 can be used simultaneously in series or in parallel.

[0115] The following provides a specific structural solution for implementing the above embodiment:

[0116] 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;

[0117] The first clamping rib 100 includes a first inner clamping rib 121 and a first outer clamping rib 122 , and the second clamping rib 200 includes a second inner clamping rib 221 and a second outer clamping rib 222 ;

[0118] The first inner clamping rib 121 and the second inner clamping rib 221 are arranged upwardly and tilted from the inner support structure 310 toward the outer ring heating zone, so as to form an inner clamping gap 410 between the first inner clamping rib 121 and the second inner clamping rib 221;

[0119] The first outer clamping rib 122 and the second outer clamping rib 222 are arranged to be inclined upward from the outer support structure 320 in a direction away from the inner ring heating zone to form an outer clamping gap 420 between the first outer clamping rib 122 and the second outer clamping rib. It is worth noting that in other embodiments, the number of support structures can be adjusted according to the zoning of the heating zone. In this embodiment, only the basic inner and outer support structures are used for illustration. It should be understood that the technical solution of multiple support structures is based on the inner and outer support structures in this embodiment and should fall within the scope of protection of this application.

[0120] Among them, the inner support structure 310 is arranged in a columnar shape in the center of the coil disk, and the outer support structure 320 is arranged in a ring on the outside of the inner support structure 310, and there is a gap between the inner support mechanism and the outer support structure 320. The first inner clamping rib 121 and the second inner clamping rib 221 extend from the inner support structure 310 to the outer support structure 320, and the first inner clamping rib 121 is located above the second inner clamping rib 221 (there are various forms of being above, including facing, completely offset and partially offset. Please refer to the above embodiments for details). The first inner clamping rib 121 and the second inner clamping rib 221 can be straight or long arc-shaped, as long as the first inner clamping gap 410 is tilted upward.

[0121] Similarly, the first outer clamping rib 122 and the second outer clamping rib 222 extend from the outer support structure 320 in a direction away from the inner support structure 310, and the first outer clamping rib 122 is located above the second outer clamping rib 222 (there are various forms of being above, including facing, completely offset, and partially offset. Please refer to the above embodiments for details). The first outer clamping rib 122 and the second outer clamping rib 222 can be straight or long arc-shaped, as long as the first outer clamping gap 420 is tilted upward. The outer support structure 320 is arranged in a circular ring shape, and multiple first outer clamping ribs 122 and second outer clamping ribs 222 are arranged along the circumference of the outer support structure 320.

[0122] In some embodiments, see Figure 17 to Figure 20. In order to further improve the adaptability of the coil disk and improve the energy utilization of the coil disk, the coil disk includes an inner ring heating zone and an outer ring heating zone; the wire clamping gap includes 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 includes a first winding gap 421 and a second winding gap 422 arranged in an upper and lower manner, and / or, the inner wire clamping gap 410 includes a third winding gap 411 and a fourth winding gap 412 arranged in an upper and lower manner; 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.

[0123] Specifically, in this embodiment, the inner ring heating zone of the coil disk can be a single layer or multiple layers. For example, a two-layer configuration includes a third winding gap 411 and a fourth winding gap 412. 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 zone of the coil disk can be a single layer or multiple layers. For example, a two-layer configuration includes a first winding gap 421 and a second winding gap 422. A first coil winding 810 is wound in the corresponding first winding gap 421, and a second coil winding 820 is wound in the corresponding second winding gap 422.

[0124] Among them, regarding the relationship between the coil windings 800:

[0125] The first coil winding 810 and the second coil winding 820 are independent of each other, or they are connected in series, or they are connected in parallel. The third coil winding 830 and the fourth coil winding 840 are independent of each other, or they are connected in series, or they are connected in parallel. Of course, in some embodiments, depending on specific needs, the first coil winding 810 and the third coil winding 830 (or the fourth coil winding 840) can 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) can be connected in series or in parallel.

[0126] Because the coil windings 800 on different layers are spaced at different distances from the heated cookware, coils in different locations can be adapted to different cookware heating requirements. Specifically, to meet different operating requirements, you can choose to use the inner ring heating zone, the outer ring heating zone, or both simultaneously. The following details the heating location and the maximum and minimum power of the coil disk:

[0127] When only the middle portion needs to be heated, 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 simultaneously in series or in parallel; the power is higher when the third coil winding 830 is used, and lower when the fourth coil winding 840 is used. The power when the third coil winding 830 and the fourth coil winding 840 are used in parallel is higher than the power when the third coil winding 830 is used alone;

[0128] 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 higher when the first coil winding 810 is used, and the power is lower when the second coil winding 820 is used. The power when the first coil winding 810 and the second coil winding 820 are used in parallel is greater than the power when the first coil winding 810 is used alone.

[0129] When both the middle and the periphery need to be heated, a set of coil windings 800 are selected in the inner ring heating zone and the outer ring heating zone to work together, such as selecting the third coil winding 830, and using the first coil winding 810 and the second coil winding 820 in parallel.

[0130] To enhance the intelligent and convenient control of the operation of the coil winding 800, the coil disk includes a control circuit board. A first switching circuit is provided on the control circuit board. The first switching circuit is connected to the first coil winding 810 and the second coil winding 820, respectively, to switch the connection relationship between the first coil winding 810 and the second coil winding 820. And / or, a second switching circuit is provided on the control circuit board. The second switching circuit is connected to the third coil winding 830 and the fourth coil winding 840, respectively, to switch the connection relationship between the third coil winding 830 and the fourth coil winding 840. In this embodiment, the first switching circuit is provided to control the operation of the first coil winding 810 or the second coil winding 820, or the first coil winding 810 and the second coil winding 820 in series or in parallel, as required. Similarly, the second switching circuit is provided to control the operation of the third coil winding 830 or the fourth coil winding 840, or the third coil winding 830 and the fourth coil winding 840 in series or in parallel, as required. 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. The main control circuit can coordinate the operation of the first switching circuit and the second switching circuit according to instructions or requirements so that the coil disk can work as required.

[0131] In some embodiments, in order to further improve the energy utilization of the coil disk and extend the service life of the IGBT (Insulated Gate Bipolar Transistor) on the control circuit board, the coil disk further includes:

[0132] a first inductor and a first resistor configured with the first coil winding 810;

[0133] a second inductor and a second resistor configured with the second coil winding 820;

[0134] a third inductor and a third resistor configured with the third coil winding 830;

[0135] a fourth inductor and a fourth resistor configured with the fourth coil winding 840;

[0136] The first inductance is smaller than the second inductance and / or the fourth inductance;

[0137] The first resistor is greater than the second resistor and / or the fourth resistor;

[0138] The third inductance is smaller than the fourth inductance and / or the second inductance;

[0139] The third resistor is greater than the fourth resistor and / or the second resistor.

[0140] Specifically, in this embodiment, the first coil winding 810 is located above the second coil winding 820, and the third coil winding 830 is located above the fourth coil winding 840. This makes the first coil winding 810 and the third coil winding 830 suitable for higher-power operations, while the second coil winding 820 and the fourth coil winding 840 are suitable for lower-power operations. In this case, it is necessary to configure a smaller first inductance and a larger first resistance for the first coil winding 810, and a smaller second inductance and a smaller second resistance for the second coil winding 820, i.e., first inductance < second inductance, first resistance > second resistance. Similarly, it is necessary to configure a smaller third inductance and a larger third resistance for the third coil winding 830, and a smaller fourth inductance and a smaller fourth resistance for the fourth coil winding 840, i.e., third inductance < fourth inductance, third resistance > fourth resistance. This arrangement allows different coil windings 800 to be selected for different working requirements, and each coil winding 800 is configured with an appropriate inductance and resistance, so that the corresponding coil winding 800 can adapt to the working requirements. In this way, while fully and reasonably utilizing electrical energy, the IGBT on the control circuit board is prevented from generating high temperatures, thereby lowering the operating temperature of the IGBT and helping to extend the service life of the IGBT. The inductance can be configured by setting the number of turns of the coil winding 800. The more turns the coil has, the greater the inductance, and the fewer turns the coil has, the lower the inductance. Therefore, the number of turns of the first coil winding 810 can be set to be less than the number of turns of the second coil winding 820, and the number of turns of the third coil winding 830 can be set to be less than the number of turns of the fourth coil winding 840.

[0141] To further achieve coordinated operation of the coil windings 800 in the inner and outer heating zones, the inductors and resistors can be further defined: the first inductor < the fourth inductor, the first resistor > the fourth resistor; and the third inductor < the second inductor, the third resistor > the second resistor. This allows the first coil winding 810 (outer heating zone) to be used in conjunction with the fourth coil winding 840 (inner heating zone), and the third coil winding 830 (inner heating zone) to be used in conjunction with the second coil winding 820 (outer heating zone). This allows the coil windings 800 to be configured in any desired configuration, ensuring full energy savings and extending the life of the IGBT.

[0142] It is worth noting that the above description only uses two sets of coil windings 800 in each of the inner and outer ring heating zones. It is understood that the above solution can be extended to include multiple sets of coil windings 800 in each heating zone, or to include more heating zones. All such extensions fall within the inventive concepts of this application.

[0143] In some embodiments, reference Figure 13To adapt the coil disk to existing work platforms, different coil windings 800 are arranged without increasing the overall coil disk height. The height h1 of the coil winding 800 located within the inner clamping gap 410 is equivalent to the height h2 of the coil winding 800 located within the outer clamping gap 420. When two layers of coil windings 800 are arranged in the outer ring heating zone, the height of the two layers of coil windings 800 (overlapping each other) is equivalent to the height of the single layer of coil windings 800 in the inner ring heating zone. Conversely, when two layers of coil windings 800 are arranged in the inner ring heating zone, the height of the two layers of coil windings 800 (overlapping each other) is equivalent to the height of the single layer of coil windings 800 in the outer ring heating zone. Because the coil windings 800 are arranged at an angle, the height of the single layer can be adjusted by adjusting the angle of the coil windings 800 to achieve the same height as the double layer. In this embodiment, by setting the height h1 of the coil winding 800 in the inner wire clamping gap 410 to be equivalent to the height h2 of the coil winding 800 in the outer wire clamping gap 420, the coil disk can fully and reasonably utilize the space, avoiding additional increase in the height of the coil disk, so that the coil disk can be used on the existing work platform, greatly reducing the manufacturing cost of the cooking utensils.

[0144] See also Figure 19 The present invention also provides a cooking utensil comprising a base 700 and a coil disk. The specific structure of the coil disk is similar to that of the aforementioned embodiments. Since the present cooking utensil utilizes all the technical solutions of all the aforementioned embodiments, it possesses at least all the beneficial effects of the technical solutions of the aforementioned embodiments, and therefore will not be further detailed here. The coil disk is mounted on the base 700.

[0145] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present description and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A coil disk, characterized in that: include: A support structure located in the middle of the coil disk; a first clamping rib, one end of which is connected to the support structure and the other end of which extends away from the support structure; a second clamping rib, the second clamping rib being located below the first clamping rib, one end of the second clamping rib being connected to the support structure, and the other end of the second clamping rib extending in a direction away from the support structure; The first clamping rib, the second clamping rib, and the support structure enclose a first clamping gap for winding the enameled wire; The first clamping rib is provided with a first heat dissipation opening; and / or the second clamping rib is provided with a second heat dissipation opening; The coil disk further includes a coil support, the coil support is located below the second clamping rib, and the second clamping rib, the coil support and the support structure enclose a second clamping gap; The first clamping gap and the second clamping gap are connected through an opening, a plurality of second clamping ribs are provided, and the gap between two adjacent second clamping ribs is configured as the opening; During the winding process of the enameled wire of the coil disk, when the enameled wire passes through the opening, it enters from the first wire clamping gap into the second wire clamping gap, or from the second wire clamping gap into the first wire clamping gap, so that the enameled wire is alternately wound between the first wire clamping gap and the second wire clamping gap through the opening, and the enameled wire does not need to be fixed in the first wire clamping gap and the second wire clamping gap using glue.

2. The coil disk according to claim 1, wherein There are multiple first clamping ribs, and the multiple first clamping ribs are radially arranged along the circumference of the support structure; and / or, There are multiple second clamping ribs, and the multiple second clamping ribs are radially arranged along the circumference of the support structure, so that the first clamping gaps are arranged along the circumference of the support structure.

3. The coil disk according to claim 1, wherein The width of the first clamping rib gradually increases from the supporting structure outwards; and / or, The width of the second clamping rib gradually increases from the supporting structure outwards.

4. The coil disk according to claim 1, wherein The first clamping rib and the second clamping rib have straight sections, so that the radial cross section of the first clamping gap has a straight section; and / or, The first clamping rib and the second clamping rib have a stepped section, so that the radial cross section of the first clamping gap has a stepped section; and / or, The first clamping rib and the second clamping rib have arc-shaped curved sections, so that the radial cross-section of the first clamping gap has an arc-shaped curved section.

5. The coil disk according to any one of claims 1 to 4, characterized in that The number of layers of the coil winding wound in the first clamping gap is 2 to 5 layers.

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

7. The coil disk according to claim 1, wherein The coil disk comprises at least an inner ring heating zone and an outer ring heating zone; The first clamping gap includes an inner clamping gap located in the inner ring heating zone and an outer clamping gap located in the outer ring heating zone. The inner clamping gap and the outer clamping gap are inclined upward and have different inclination angles.

8. The coil disk according to claim 7, wherein The outer winding gap includes a first winding gap and a second winding gap arranged in an upper and lower arrangement, and the first winding gap and the second winding gap have different inclination angles.

9. The coil disk according to claim 7, wherein The support structure at least includes 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 clamping rib includes a first inner clamping rib and a first outer clamping rib, and the second clamping rib includes a second inner clamping rib and a second outer clamping rib; The first inner clamping rib and the second inner clamping rib are arranged upwardly and tilted from the inner support structure toward the outer ring heating zone to form an inner clamping gap between the first inner clamping rib and the second inner clamping rib; The first outer clamping rib and the second outer clamping rib are arranged upwardly and tilted from the outer support structure in a direction away from the inner ring heating zone to form an outer clamping gap between the first outer clamping rib and the second outer clamping rib.

10. The coil disk according to claim 1, wherein The coil disk includes an inner ring heating zone and an outer ring heating zone; the first wire clamping gap includes an inner wire clamping gap located in the inner ring heating zone and an outer wire clamping gap located in the outer ring heating zone; The outer wire clamping gap includes a first winding gap and a second winding gap arranged in an upper and lower manner, and / or the inner wire clamping gap includes a third winding gap and a fourth winding gap arranged in an upper and lower manner; The first winding gap and the second winding gap are provided with a first coil winding and a second coil winding, respectively; and / or the third winding gap and the fourth winding gap are provided with a third coil winding and a fourth coil winding, respectively.

11. The coil disk according to claim 10, wherein The first coil winding and the second coil winding are independent of each other; or, The first coil winding is connected in series with the second coil winding; or, The first coil winding is connected in parallel with the second coil winding.

12. The coil disk according to claim 10, wherein The third coil winding and the fourth coil winding are independent of each other; or, The third coil winding is connected in series with the fourth coil winding; or, The third coil winding is connected in parallel with the fourth coil winding.

13. The coil disk according to claim 10, wherein The coil disk includes a control circuit board, on which a first switching circuit is provided. The first switching circuit is connected to the first coil winding and the second coil winding, respectively, to switch the connection relationship between the first coil winding and the second coil winding; and / or, A second switching circuit is provided on the control circuit board. The second switching circuit is connected to the third coil winding and the fourth coil winding respectively to switch the connection relationship between the third coil winding and the fourth coil winding.

14. The coil disk according to claim 10, wherein The coil disk further includes a first inductor and a first resistor configured with the first coil winding; a second inductor and a second resistor configured with the second coil winding; a third inductor and a third resistor configured with the third coil winding; a fourth inductor and a fourth resistor configured with the fourth coil winding; The first inductance is smaller than the second inductance and / or the fourth inductance; The first resistor is greater than the second resistor and / or the fourth resistor; The third inductance is smaller than the fourth inductance and / or the second inductance; The third resistor is greater than the fourth resistor and / or the second resistor.

15. The coil disk according to claim 10, wherein The height h1 of the coil winding located in the inner clamping gap is equivalent to the height h2 of the coil winding located in the outer clamping gap.

16. The coil disk according to claim 1, wherein The first clamping gap includes an inner arc segment, and the inner arc segment bends and extends downward from the supporting structure.

17. The coil disk according to claim 16, wherein The first clamping gap also includes a transition section and an outer arc section; the inner arc section is set in a concave arc from the support structure downward, and the outer arc section is set in a concave arc from the transition section upward, and the inner arc section and the outer arc section are connected by a transition section circular arc.

18. The coil disk according to claim 1, wherein There is a first gap between two adjacent first clamping ribs, and the second clamping rib is located between two adjacent first clamping ribs corresponding to the first gap.

19. The coil disk according to claim 1, wherein The opening is arranged along the radial direction of the coil disk. Each time the enameled wire passes through the opening, it 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 coils in the first wire clamping gap and the second wire clamping gap are wound alternately in sequence.

20. A cooking utensil, characterized in that: Comprising the coil disk according to any one of claims 1 to 19.

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