Disc body, wire coil assembly and electromagnetic heating cooking utensil

Abstract

The utility model discloses a disc body, a wire coil assembly and an electromagnetic heating cooking utensil. The disc body is used for being matched with an electromagnetic heating disc-shaped winding wire of the electromagnetic heating cooking utensil for use. The disk body includes a disk body configured in a substantially symmetrical shape, the disk body having a geometric center axis and being made of a first material. At least one first area is arranged on the disc body in the circumferential direction of the disc body at intervals, and each first area comprises a second material different from the first material and is used for gathering magnetic lines of force of a magnetic field generated by electromagnetic heating disc-shaped winding. According to the application, the first area of the disc body can gather the magnetic lines, so that the magnetic field intensity at the first area is increased, and a magnetic field which is non-uniformly distributed along the circumferential direction of the disc body can be formed.

Description

Technical Field

[0001] The present application relates to the technical field of cooking utensils, and in particular to a dish body used for electromagnetic heating cooking utensils, a wire reel device using the dish body, and an electromagnetic heating cooking utensil using the wire reel device. Background Art

[0002] In order to achieve the three-dimensional heating effect of ingredients during cooking and the complex and intense convection heating effect, the existing IH rice cooker has multiple independently controlled coil windings on the coil rack. Through the independent control and heating of the coil windings in different parts, the hot and cold areas in the pot can be variable, that is, different convection directions of the hot and cold areas can be formed in different cooking time periods, so that more than one heat convection tumbling state can be generated, thereby achieving the complex and intense convection heating effect inside the inner pot. Due to the provision of multiple independently heated coil windings, the coil winding arrangement is difficult, the winding method is complex, and the winding process is required to be high, and the magnetic strip and magnetic strip frame structure process is complex, the assembly is difficult, and the overall cost is high. In addition, in order to achieve the complex and intense convection heating effect, multiple groups of independently controlled coil windings are provided, that is, multiple groups of independent power supply control modules need to be provided, so part of the electric control cost is also increased. Moreover, the heating position of the coil winding is fixed, the heating area is limited, and the rice effect is not ideal.

[0003] Therefore, an electromagnetic heating cooking appliance is needed to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of this application does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the present application provides a tray body for use with an electromagnetic heating coil winding of an electromagnetic heating cooking utensil, the tray body comprising:

[0006] a disk body configured in a substantially symmetrical shape, the disk body having a geometric center axis, the disk body being made of a first material; and

[0007] At least one first area is arranged on the disk body, and the first areas are arranged at intervals along the circumferential direction of the disk body. Each first area is provided with a second material different from the first material, which is used to gather the magnetic lines of force of the magnetic field generated by the electromagnetic heating disk winding.

[0008] According to the present application, the first area of ​​the disk body can gather the magnetic lines of force to increase the magnetic field strength at the first area and focus the magnetic field energy, thereby forming a non-uniformly distributed magnetic field along the circumferential direction of the disk body.

[0009] Optionally, at least one magnetic line of force gathering member is provided at the first region, and the magnetic line of force gathering member comprises a second material different from the first material.

[0010] According to the present application, the second material is arranged in a simple manner. The magnetic field line concentrating member focuses the magnetic field energy on a relatively small area, thereby forming point-like heating.

[0011] Optionally, the thickness of the magnetic line gathering member is 2 mm to 10 mm.

[0012] According to the present application, the thickness of the magnetic line gathering member can be flexibly set.

[0013] Optionally,

[0014] The area of ​​a single magnetic field gathering piece is 28mm 2 Up to 5024mm 2 ; and / or

[0015] The area of ​​all the magnetic flux converging members accounts for 10% to 70% of the area of ​​the disk body.

[0016] According to the present application, the area of ​​the magnetic line gathering member can be flexibly set.

[0017] Optionally, the first material is a non-magnetic material or a metal with a magnetic permeability less than or equal to 10 B / H, and the second material is a metal with a magnetic permeability greater than or equal to 100 B / H.

[0018] According to the present application, the magnetic lines of force are gathered by making the second material have a larger magnetic permeability.

[0019] Optionally, the magnetic field line gathering member is connected to the disk body via at least one of the following connection structures:

[0020] The magnetic field line gathering member is embedded in the disk body.

[0021] The magnetic line gathering member is attached to the surface of the disk body, and

[0022] The magnetic line gathering member is snap-connected with the disk body.

[0023] According to the present application, the connection method between the magnetic line gathering member and the disk body is flexible.

[0024] Optionally, at least one heat dissipation area is also provided on the disk body.

[0025] Furthermore, the heat dissipation area is provided with at least one heat dissipation hole.

[0026] According to the present application, the heat dissipation area and the heat dissipation holes are used to dissipate heat for the coiled wire.

[0027] Optionally, a dish body connecting portion is provided at the central portion of the dish body for connecting the dish body to the electromagnetic heating cooking utensil.

[0028] According to the present application, the way in which the pan body is mounted to the electromagnetic heating cooking utensil is simple.

[0029] Optionally, the disk body connecting portion includes a cylindrical portion with the geometric center axis as its axis.

[0030] According to our company's request, the connection structure of the disk body is simple.

[0031] Optionally, the first end of the cylindrical portion is connected to the central portion of the disk body, the second end of the cylindrical portion extends in a direction away from the disk body, the central axis of the cylindrical portion coincides with the geometric center axis, and the outer peripheral surface of the cylindrical portion is provided with a connecting structure for connecting a driving device, wherein the driving device is used to drive the disk body to rotate around the geometric center axis.

[0032] According to the present application, the connection mode between the turntable and the driving device is simple.

[0033] Optionally,

[0034] The driving device comprises a transmission wheel, which is an annular structure and is used to be sleeved on the outer periphery of the cylindrical part.

[0035] The connecting structure is used to connect the transmission wheel, and the connecting structure includes a first limit stop surface, which extends outward from the outer peripheral surface of the cylindrical portion along the radial direction of the cylindrical portion and toward the second end of the cylindrical portion, and is used to limit the movement of the transmission wheel along the axial direction of the cylindrical portion toward the disk body.

[0036] According to the present application, the driving device has a simple structure and stable performance.

[0037] Optionally,

[0038] At least one second connecting body is provided on the inner circumferential surface of the transmission wheel, and the connecting structure includes at least one first connecting body, the first connecting body is used to be arranged corresponding to the second connecting body and to connect the corresponding second connecting body, and the first connecting body is closer to the second end of the cylindrical portion than the first limit stop surface;

[0039] When the transmission wheel is located at the set position of the cylindrical portion, the first connecting body is used to engage with the second connecting body to limit the transmission wheel from rotating relative to the connecting structure.

[0040] According to the present application, by connecting the first connecting body with the second connecting body, the transmission wheel can drive the cylindrical portion to rotate, thereby driving the turntable to rotate.

[0041] Optionally,

[0042] The second connecting body is a limiting groove provided on the inner peripheral surface of the transmission wheel, the limiting groove extends along the axial direction of the transmission wheel, and the first connecting body is a convex rib provided on the outer peripheral surface of the cylindrical portion, the limiting groove is used to accommodate the convex rib; or,

[0043] The second connecting body is a convex rib arranged on the inner circumferential surface of the transmission wheel, and the first connecting body is a limiting groove arranged on the outer circumferential surface of the cylindrical portion. The limiting groove extends along the axial direction of the cylindrical portion and is used to accommodate the convex rib.

[0044] According to the present application, the first connector and the second connector are simply arranged and have stable performance.

[0045] Optionally, the connecting structure also includes at least one second limit stop member, which is arranged on the outer peripheral surface of the cylindrical portion, and the side of the second limit stop member facing the first end of the cylindrical portion includes a second limit stop surface, and the second limit stop surface extends outward from the outer peripheral surface of the cylindrical portion along the radial direction of the cylindrical portion, and the second limit stop surface is closer to the second end of the cylindrical portion than the first limit stop surface.

[0046] According to the present application, the transmission wheel is clamped between the first limit stop surface and the second limit stop surface.

[0047] Optionally,

[0048] The second limit stopper has a first outer surface located on a side facing away from the cylindrical portion, and the first outer surface is configured to be inclined relative to the axis of the cylindrical portion, so that the distance between the end of the first outer surface facing the second end of the cylindrical portion and the axis of the cylindrical portion is smaller than the distance between the end of the first outer surface facing the first end of the cylindrical portion and the axis of the cylindrical portion.

[0049] Portions of the cylindrical portion located on both sides of the second limit stopper along the circumferential direction of the cylindrical portion are configured as functional grooves extending along the axial direction of the cylindrical portion, and the functional grooves penetrate through the side wall of the cylindrical portion.

[0050] According to the present application, the transmission wheel can be conveniently installed on the outer periphery of the cylindrical part.

[0051] Optionally, the axial cross-section of the disk body is a C-shaped structure.

[0052] According to the present application, the axial cross-section of the plate body is a C-shaped structure, so that the turntable can surround at least part of the bottom and the side of the cooking container.

[0053] Optionally, the second end of the cylindrical portion is located outside the C-shaped structure.

[0054] According to the present application, the cylindrical portion is located outside the C-shaped structure, which is convenient for connecting the drive device.

[0055] A second aspect of the present application provides a wire reel assembly for an electromagnetic heating cooking utensil, comprising:

[0056] A wire coiling rack, the wire coiling rack having a wire coiling rack central axis;

[0057] A coiled wire, the coiled wire being spirally wound around the central axis of the coiled wire frame on the surface of the coiled wire frame, the coiled wire being used to constitute a resonant inductor of an electromagnetic heating resonant circuit, so as to generate an alternating magnetic field required for electromagnetic heating after being energized; and

[0058] A disc body according to any one of the technical solutions of the first aspect, wherein the disc body is used to be spaced apart from the wire coiling rack, and the geometric center axis is substantially coincident with the center axis of the wire coiling rack.

[0059] According to the present application, the disc-shaped winding can generate the alternating magnetic field required for electromagnetic heating, and the first area of ​​the disc body can gather the magnetic lines of force to increase the magnetic field strength in the first area and focus the magnetic field energy, thereby forming an unevenly distributed magnetic field along the circumferential direction of the disc body.

[0060] The third aspect of the present application provides an electromagnetic heating cooking appliance, comprising:

[0061] Receiving cavity;

[0062] According to the wire reel assembly of the second aspect, the wire reel assembly is located in the accommodating cavity;

[0063] A cooking container for holding food, the cooking container being at least partially made of ferromagnetic material, the cooking container having a cooking container central axis, the cooking container being detachably disposed on one side of the wire reel assembly, and the cooking container central axis substantially coincides with the geometric central axis; and

[0064] A driving device is connected to the disc body and is used to drive the disc body to rotate around the geometric center axis relative to the wire coiling rack.

[0065] According to the present application, the wire coil assembly can generate a magnetic field that is non-uniformly distributed along the circumferential direction of the coil body, and the driving device allows the magnetic field to rotate, thereby rotating the heated part of the cooking container, and the food in the cooking container is evenly heated by rotation, and the food in the cooking container is fully convectively rolled. The rotation of the coil body drives the air disturbance at the coil rack, which helps the coil rack to dissipate heat, that is, under the same temperature resistance conditions, higher power IH heating can be achieved. The rotation of the first area can achieve a stronger magnetic field shielding effect than the existing IH static magnetic strip.

[0066] Optionally, the driving device comprises:

[0067] A drive assembly for providing a driving force to rotate the disc body relative to the cable drum; and

[0068] The transmission assembly is connected between the driving assembly and the disk body and is used for transmitting the driving force to the disk body.

[0069] According to the present application, the driving device has a simple structure.

[0070] Optionally, the drive assembly is configured as a motor; and / or

[0071] The electromagnetic heating cooking appliance further comprises a grounding wire, one end of which is connected to the housing of the driving assembly, and the other end of which is connected to a grounding terminal of the electromagnetic heating cooking appliance.

[0072] According to the present application, the drive assembly has simple control, stable performance and low cost. The grounding wire is beneficial for the drive assembly to resist electromagnetic interference.

[0073] Optionally, the transmission assembly is made of non-metallic material.

[0074] According to the present application, the transmission assembly is not disturbed by the magnetic field of the disc-shaped winding.

[0075] Optionally, the electromagnetic heating cooking appliance further comprises a magnetic shielding cover, which is used to cover at least a part of the driving device to shield the alternating magnetic field.

[0076] Furthermore, the electromagnetic heating cooking appliance further comprises a grounding wire, one end of which is connected to the magnetic shield, and the other end of which is connected to a grounding terminal of the electromagnetic heating cooking appliance.

[0077] According to the present application, the magnetic field of the driving device and the magnetic field of the disc winding do not interfere with each other as much as possible.

[0078] Optionally, the first region is provided with at least one magnetic line of force gathering member, the magnetic line of force gathering member comprises a second material different from the first material, and the distance between the magnetic line of force gathering member and the disc winding is 1 mm to 15 mm.

[0079] According to the present application, the distance between the second material and the disc-shaped winding can be flexibly set. The magnetic field gathering member allows the magnetic field energy to be focused on a smaller area of ​​the cooking container, forming point-like heating. When the disc body rotates, a multi-point heat source rotation heating effect can be achieved, thereby achieving a variable heating heat convection morphology, increasing the cooking convection tumbling effect, making the rice heating more even, and improving the problem of local rice being mushy or dry after cooking. The rapid rotation of the magnetic field gathering member can achieve a stronger magnetic field shielding effect than the existing IH static magnetic strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The following drawings of the present application are used as a part of the present application for understanding the present application. The drawings show the implementation modes of the present application and the description thereof, and are used to explain the principle of the present application.

[0081] In the attached figure:

[0082] Figure 1 is a side cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a first embodiment of the present application;

[0083] Figure 2 for Figure 1 A schematic side cross-sectional view of a portion of the internal structure of the electromagnetic heating cooking device shown, wherein a cooking container, a wire reel device and a driving device are shown;

[0084] Figure 3 for Figure 1 An exploded schematic diagram of a wire reel device of an electromagnetic heating cooking utensil shown;

[0085] Figure 4 for Figure 1 An exploded schematic diagram of a part of the internal structure of the electromagnetic heating cooking device shown, wherein a driving device is shown;

[0086] Figure 5 is a side cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a second embodiment of the present application;

[0087] Figure 6 for Figure 5 A schematic side cross-sectional view of a portion of the internal structure of the electromagnetic heating cooking device shown, wherein a cooking container, a wire reel device and a driving device are shown;

[0088] Figure 7 for Figure 5 An exploded schematic diagram of a portion of the internal structure of the electromagnetic heating cooking device shown, wherein a cooking container and a wire reel device are shown;

[0089] Figure 8 for Figure 5 A schematic cross-sectional view of a portion of the internal structure of an electromagnetic heating cooking device is shown, wherein the wiring method of the coiled wire of the coil device is shown;

[0090] Fig. 9 for Figure 5 An exploded schematic diagram of a part of the internal structure of the electromagnetic heating cooking device shown, wherein a driving device is shown;

[0091] Fig.10 for Figure 7 A bottom view of the disc body is shown.

[0092] Description of reference numerals:

[0093] 10: Cover

[0094] 20: Claypot

[0095] 21: Accommodation cavity

[0096] 22: Circuit board assembly

[0097] 26: Base

[0098] 27: Power socket

[0099] 30: Cooking Container

[0100] 31: Cooking Space

[0101] 40: Temperature sensor assembly

[0102] 41: Spring

[0103] 42: Wires

[0104] 51: Drive components / motor

[0105] 52: Magnetic shield

[0106] 53: Ground wire

[0107] 54: Bolt

[0108] 56: Shaft hole

[0109] 57: First transmission wheel

[0110] 58: Second transmission wheel

[0111] 58A: Avoidance

[0112] 59: Motor output shaft

[0113] 161: Rotational auxiliary structure

[0114] 162: Support

[0115] 162A: Accommodation space

[0116] 162B: Accommodation space side wall

[0117] 163: First end of support member

[0118] 164: Second end of the support member

[0119] 400: Induction heating cooking appliances

[0120] 350: Drive unit

[0121] 355: Transmission components

[0122] 365: First stopper

[0123] 365A: First blocking part

[0124] 365B: First connection

[0125] 366: Second blocking member

[0126] 366A: Second blocking part

[0127] 366B: Second connection part

[0128] 369A: Cable hole

[0129] 369B: Through hole

[0130] 369C: Blocking surface

[0131] 369F: Opening

[0132] 369G: First additional blocking part

[0133] 369H: Second additional blocking part

[0134] 369M: First additional connection

[0135] 369N: Second additional connection

[0136] 380: Cable reel

[0137] 382: Coil winding

[0138] 389A: Cable tray through hole

[0139] 389B: Enameled wire

[0140] 389C: Cylindrical part

[0141] 389D: Blocking surface

[0142] 389E: Opening

[0143] 389L: Side wall of cable tray through hole

[0144] 400 / 500: Induction heating cooking appliances

[0145] 460 / 560: Cable drum device

[0146] 470 / 570: Cable drum assembly

[0147] 490: Turntable

[0148] 491: First Area

[0149] 492: Second Area

[0150] 493: Disk body

[0151] 495: Magnetic field gathering device

[0152] 496: Heat dissipation holes

[0153] 499: Disk body connection

[0154] 566: Second blocking member

[0155] 566A: Second blocking part

[0156] 566B: Second connection part

[0157] 569A: Cable hole

[0158] 569G: First additional blocking part

[0159] 569H: Round hole

[0160] 569I: Second additional cable hole

[0161] 599A: Plate through hole

[0162] 599B: Protrusion

[0163] 599C: Cylindrical part

[0164] 599D: Connection structure

[0165] 599E: First limit stop surface

[0166] 599F: First connector

[0167] 599G: Second limit stop

[0168] 599H: Second limit stop surface

[0169] 599I: First outer surface

[0170] 599J: Function slot

[0171] 599L: Side wall of cable tray through hole

[0172] 599M: Blocking surface

[0173] 599X: First end of cylindrical part

[0174] 599Y: Second end of cylindrical part

[0175] P3: Central axis of cooking container

[0176] P8: Center axis of the coiling rack

[0177] P9: Geometric center axis

[0178] PA: Center axis of the cable drum assembly DETAILED DESCRIPTION

[0179] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0180] In order to thoroughly understand the present application, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments.

[0181] Ordinal numbers such as "first" and "second" cited in this application are merely identifiers and do not have any other meaning, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". The use of the words "first", "second", and "third" does not indicate any order, and these words can be interpreted as names.

[0182] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0183] The present application provides a coil body used in conjunction with an electromagnetic heating coil winding of an electromagnetic heating cooking utensil, a coil assembly for the electromagnetic heating cooking utensil, and the electromagnetic heating cooking utensil using the coil assembly.

[0184] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0185] First embodiment

[0186] like Figure 1 As shown, in the first embodiment according to the present application, an electromagnetic heating cooking utensil 400 (referred to as cooking utensil 400) comprises a cover 10 and a pot body 20. A heating device and a cooking container 30 (e.g., a pot) are arranged in the pot body 20. The cooking container 30 is used to hold food, and the heating device is used to heat the cooking container 30. The cover 10 is used to cover the pot body 20. When the cover 10 covers the pot body 20, a cooking space 31 is formed between the cover 10 and the cooking container 30. The volume of the cooking container 30 is, for example, 1L to 15L. It can be understood that the cooking container 30 includes a ferromagnetic material, for example, at least partially made of a ferromagnetic material.

[0187] Specifically, the pot body 20 has a receiving cavity 21, and the cooking container 30 is removably arranged in the receiving cavity 21. The heating device is composed of a wire drum device 460 and a circuit board assembly 22. Figure 2 As shown, the wire reel device 460 includes a coiled wire 382, ​​which is used to form a resonant inductor of an electromagnetic heating resonant circuit, so as to generate an alternating magnetic field required for electromagnetic heating after power is turned on. The circuit board assembly 22 is used to power the coiled wire 382. The circuit board assembly 22 is provided with, for example, a resonant capacitor used in conjunction with the coiled wire 382, ​​a switch module (for example, a power switch tube IGBT), a control module, a power module, etc. The wire reel device 460 is arranged at the bottom of the accommodating cavity 21, and the cooking container 30 is detachably arranged from the wire reel device 460 in a magnetically inductive area of ​​the wire reel device 560 of the wire reel device 460, for example, at least above. The cooking container 30 has a central axis P3 of the cooking container. The cooking container 30 is generally in the shape of a rotating body with the central axis P3 of the cooking container as the axis.

[0188] like Figure 2 and Figure 3As shown, the wire reel device 460 includes a wire reel assembly 470, so that the cooking container 30 and the wire reel assembly 470 are detachably arranged at least above the wire reel assembly 470. The wire reel assembly 470 has a wire reel assembly central axis PA, and the wire reel assembly 470 is configured so that the magnetic field strength of the alternating magnetic field generated by the coiled wire 382 is non-uniformly distributed along the circumferential direction of the wire reel assembly 470. When the cooking container 30 is located at least above the wire reel assembly 470 (or the wire reel device 460), the cooking container central axis P3 is parallel or substantially parallel to the wire reel assembly central axis PA, and preferably, the cooking container central axis P3 coincides or substantially coincides with the wire reel assembly central axis PA. The cooking appliance 400 is configured so that when the cooking container 30 is located at least above the wire reel assembly 470 (or the wire reel device 460), at least a portion of the wire reel assembly 470 is rotatable relative to the cooking container 30 around the wire reel assembly central axis PA. The driving device 350 is connected to the at least part of the wire reel assembly 470 and is used to drive the at least part of the wire reel assembly 470 to rotate relative to the cooking container 30 around the wire reel assembly central axis PA.

[0189] In this application, two central axes substantially coincide means that the distance between the two central axes is ≤3 mm, and the angle between the two central axes is ≤5°. That is, the two central axes are substantially parallel and close. Two central axes substantially parallel means that the angle between the two central axes is ≤5°.

[0190] It can be understood that the central axis P3 of the cooking container and the central axis PA of the wire reel assembly both extend in the height direction of the cooking appliance 400 .

[0191] In an embodiment not shown in the present application, the wire reel device 460 is used to be arranged on the side of the cooking container 30 (for example, the wire reel device 460 is configured to include a sleeve that can be sleeved on the outer circumference of the cooking container 30). Alternatively, the wire reel device 460 can also be arranged on the cover 10 (the cover 10 includes a receiving cavity for accommodating the wire reel device 460), so that the cooking container 30 and the wire reel device 560 are detachably arranged at least below the magnetically induced area of ​​the wire reel device 460. That is, in the present application, the cooking container 30 and the wire reel device 460 are detachably arranged on one side of the magnetically induced area of ​​the wire reel device 460 (that is, the coiled wire 382 and / or the magnetic field generated by it are located at least on the upper side, at least on the lower side or at least on the outer side of the cooking container 30), and the central axis P3 of the cooking container is substantially coincident with the central axis PA of the wire reel assembly.

[0192] According to the present application, when at least a portion of the wire reel assembly 470 rotates relative to the cooking container 30 around the central axis PA of the wire reel assembly, the non-uniform alternating magnetic field rotates relative to the cooking container 30, so that the heated portion of the cooking container 30 moves along the circumferential direction of the cooking container 30, thereby solving the problem of fixed heating position in the background technology.

[0193] The central axis PA of the wire drum assembly is also the central axis of the wire drum device 460. The axial direction of the wire drum assembly 470 is also the axial direction of the wire drum device 460. The circumferential direction of the wire drum assembly 470 is also the circumferential direction of the wire drum device 460.

[0194] Specifically, the wire drum device 460 includes a support member 162 , a wire drum assembly 470 , a rotary substructure 161 , a first blocking member 365 , a second blocking member 366 , a second transmission wheel 58 and a temperature sensor assembly 40 .

[0195] The wire reel assembly 470 is disposed on the support member 162. The wire reel assembly includes a coiled wire 382, ​​a wire reel frame 380, and a rotating disk 490 (also referred to as a disk body 490).

[0196] The coiled wire 382 is connected to the support member 162. The coiled wire 382 is spirally wound around the central axis PA of the coil assembly (see Figure 3 ), thereby forming a radially symmetrical structure with the central axis PA of the wire drum assembly as the axis. For example, in the illustrated embodiment, in the projection of the wire drum assembly 470 along the extension direction of the central axis PA of the wire drum assembly, the coiled wire 382 forms a ring area or a circular area with the central axis PA of the wire drum assembly as the center. The wire drum rack 380 is preferably configured in a disc shape. The wire drum rack 380 is connected to the support member 162, and the coiled wire 382 is spirally coiled on the surface of the wire drum rack 380 around the central axis PA of the wire drum assembly. The coiled wire 382 is formed by, for example, winding an enameled wire. The wire diameter of the enameled wire is, for example, 2 mm to 2.5 mm. The coiled wire 382 can be fixed to the surface of the wire drum rack 380 by a fixing member, so that the installation method of the coiled wire 382 is simple. The coiled wire 382 is connected to the support member 162 through the wire drum rack 380. The wire coiling rack 380 has a wire coiling rack central axis P8 , which coincides or substantially coincides with the wire coil assembly central axis PA. The wire coiling rack 380 is made of non-metallic material (eg, resin, plastic, etc.), so as to have no effect on the magnetic field of the coiled wire 382 .

[0197] The axial direction of the wire coiling rack 380 is also the axial direction of the wire coiling device 460. The circumferential direction of the wire coiling rack 380 is also the circumferential direction of the wire coiling device 460.

[0198] The turntable 490 includes a disk body 493, which includes a geometric center axis P9, which coincides or substantially coincides with the center axis PA of the wire drum assembly. The disk body 493 is connected to the support 162 and is spaced from the wire drum frame 380 in the axial direction of the wire drum assembly 470, and is spaced from the coiled wire 382. The wire drum device 460 is configured so that the support 162 is rotatable about the center axis PA of the wire drum assembly relative to the wire drum frame 380, that is, rotatable relative to the coiled wire 382. Thus, the disk body 493 is rotatable about the center axis PA of the wire drum assembly relative to the wire drum frame 380, that is, rotatable relative to the coiled wire 382. The disk body 493 is alternately divided into a first area 491 and a second area 492 along the circumferential direction of the wire disk assembly 470, or the turntable 490 includes at least one first area 491 and at least one second area 492 that are correspondingly arranged, and the first area 491 and the second area 492 are alternately arranged on the disk body 493 along the circumferential direction of the wire disk assembly 470. Among them, the first area 491 includes a medium different from that of the disk body 493, and the second area 492 is completely made of the material of the disk body 493, so that the magnetic field strength of the alternating magnetic field generated by the disk-shaped winding 382 at the first area 491 is different from that at the second area 492, thereby forming an alternating magnetic field that is non-uniformly distributed along the circumferential direction of the wire disk assembly 470.

[0199] It can be understood that the first regions 491 are spaced apart on the disc body 493 along the circumferential direction of the wire disc assembly 470. Preferably, the first regions 491 are equally spaced apart on the disc body 493 along the circumferential direction of the wire disc assembly 470. The second regions 492 are also spaced apart on the disc body 493 along the circumferential direction of the wire disc assembly 470. Preferably, the second regions 492 are equally spaced apart on the disc body 493 along the circumferential direction of the wire disc assembly 470.

[0200] The disk body 493 is made of a first material, such as a non-magnetic material or a metal with a magnetic permeability of less than or equal to 10B / H. The first region 491 is provided with at least one magnetic line of force gathering member 495, and the magnetic line of force gathering member 495 includes a second material different from the first material, such as a metal with a magnetic permeability of greater than or equal to 100B / H. Since the magnetic permeability of the second material is greater than that of the first material, the magnetic lines of force of the alternating magnetic field are focused (gathered) at the magnetic line of force gathering member 495, so that the magnetic field intensity at the first region 491 is greater than the magnetic field intensity at the second region 492, a strong magnetic region is formed at the first region 491, and a weak magnetic region is formed at the second region 492. For the magnetic field of the disk winding 382, ​​the first material and the second material are two different media.

[0201] The heating temperature of the portion corresponding to the strong magnetic area of ​​the cooking container 30 is high, and the heating temperature of the portion corresponding to the weak magnetic area is low. The disk body 493 can rotate relative to the coiling rack 380, and thus can rotate relative to the cooking container 30. When the disk body 493 rotates, the strong magnetic area and the weak magnetic area rotate, that is, the magnetic field and the cooking container 30 rotate relative to each other, and the high-heat portion and the low-heat portion of the cooking container 30 move along the circumferential direction of the cooking container 30. The convection direction between the hot and cold areas inside the cooking container 30 is continuously changed by the movement, which is conducive to the food in the cooking container 30 to fully roll and be evenly heated.

[0202] A hole or a groove may be formed on the disk body 493 of the first region 491, and the magnetic force line gathering member 495 may be embedded in the hole or the groove. The magnetic force line gathering member 495 may also be attached to the surface of the disk body 493 of the first region 491. Alternatively, the magnetic force line gathering member 495 may be clamped on the disk body 493. Preferably, the thickness of the magnetic force line gathering member 495 is 2 mm to 10 mm. The area of ​​a single magnetic force line gathering member 495 is 28 mm. 2 Up to 5024mm 2 The area of ​​the entire magnetic field gathering member 495 accounts for 10% to 70% of the area of ​​the disk body 493. The area here refers to the area corresponding to the surface area of ​​one side of the disk body 493. The area of ​​the disk body 493 is the surface area of ​​one side when the disk body 493 does not have a through hole or a notch, that is, the area of ​​the complete disk surface. The area of ​​the magnetic field gathering member 495 can be understood as the area of ​​its projection on the corresponding part of the complete disk surface of the disk body 493.

[0203] The turntable 490 may include a plurality of (e.g., 2 to 5) first regions 491 and a plurality of second regions 492. Preferably, the plurality of first regions 491 are evenly spaced along the circumferential direction of the wire reel assembly 470, and the plurality of second regions 492 are evenly spaced along the circumferential direction of the wire reel assembly 470. For example, the wire reel assembly 470 is configured such that the alternating magnetic field has N strong magnetic regions and N weak magnetic regions (N is an integer greater than or equal to 1) that are alternately distributed along the circumferential direction of the wire reel assembly 470, the N strong magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 470, and the N weak magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 470. The cooking appliance 400 may be configured such that when the cooking container 30 is located at least above the wire reel assembly 470, at least a portion of the wire reel assembly 470 (e.g., the turntable 490) can rotate relative to the cooking container 30 by ±180 / N degrees. In the illustrated embodiment, the turntable 490 includes three equally spaced first areas 491 and three equally spaced second areas 492, and the turntable 490 can rotate ±60 degrees relative to the cooking container 30. It can be understood that when the turntable 490 rotates ±180 / N degrees relative to the cooking container 30, the strong magnetic area covers the entire cooking container 30, that is, the cooking container 30 is evenly heated. Of course, the turntable 490 can rotate at a larger angle relative to the cooking container 30 (preferably an angle that is an integer multiple of ±180 / N degrees, and the upper limit of the rotation angle is not limited), but it needs to rotate at least ±180 / N degrees to ensure that the cooking container 30 is evenly heated.

[0204] The multiple first regions 491 can be constructed to be the same or different. For example, the magnetic line gathering members 495 of each first region 491 have different shapes, different numbers, and different total areas. There is a first distance between two adjacent magnetic line gathering members 495 of each first region 491. Two adjacent first regions 491 have two magnetic line gathering members 495 that are closest to each other, and there is a second distance between these two magnetic line gathering members 495. The maximum value of the first distance is smaller than the second distance, that is, the distance between the magnetic line gathering members 495 of two adjacent first regions 491 is significantly larger than the distance between two adjacent magnetic line gathering members 495 inside the first region 491, so that the turntable 490 can form a clear first region 491 and a second region 492, and accordingly, the alternating magnetic field can form a clear strong magnetic region and a weak magnetic region.

[0205] Since the disc-shaped winding 382 generates a lot of heat after being energized, preferably, the second area 492 is provided with at least one heat dissipation hole 496 to help dissipate heat. Therefore, the second area 492 is also called a heat dissipation area, and at least one heat dissipation area is provided on the rotating disk 490. The plurality of second areas 492 may be constructed in the same manner or in different manners, for example, the heat dissipation holes of each second area 492 may have different shapes, different numbers, and different total areas.

[0206] The axial direction of the rotating disk 490 is also the axial direction of the wire drum device 460, that is, the axial direction of the disk body 493. The circumferential direction of the rotating disk 490 is also the circumferential direction of the wire drum device 460, that is, the circumferential direction of the disk body 493.

[0207] The wire coiling rack 380 and the disk body 493 extend substantially parallel to each other, so that the turntable 490 can better act on the magnetic field generated by the coiled wire 382. Preferably, the wire coiling rack 380 and the disk body 493 both have a substantially symmetrical structure, such as a radially symmetrical structure, so as to facilitate processing and better match the cooking container 30 which is also radially symmetrical. Preferably, the axial cross-sections of the wire coiling rack 380 and the disk body 493 are both C-shaped structures, so that the coiled wire 382 can surround the side wall of the cooking container 30. In the present application, the wire coiling rack 380 is used to be arranged outside the C-shaped structure of the disk body 493, that is, the wire coiling rack 380 is used at least below the disk body 493 along the height direction of the cooking utensil 400. The coiled wire 382 is arranged outside the C-shaped structure of the wire coiling rack 380, that is, the surface of the wire coiling rack 380 on the side facing away from the disk body 493. In the working state (when the wire reel device 460 is assembled), the distance between the magnetic line gathering member 495 and the disc-shaped winding 382 is 3.5 mm to 15 mm, that is, the gap between the magnetic line gathering member 495 and the disc-shaped winding 382 is 3.5 mm to 15 mm.

[0208] Preferably, the shape of the magnetic field line gathering member 495 conforms to the shape of the disk body 493 .

[0209] The support member 162 is, for example, generally cylindrical. The support member 162 includes a support member first end 163 and a support member second end 164 that are arranged oppositely in the axial direction of the wire drum assembly 470. In the working state, the support member first end 163 is located above the support member second end 164. The wire drum frame 380 is connected to the support member second end 164, and the drum body 493 is connected to the support member first end 163. The wire drum device 460 is configured so that the drum body 493 rotates synchronously with the support member second end 164 (i.e., the support member 162) around the central axis PA of the wire drum assembly, so as to be rotatable relative to the wire drum frame 380.

[0210] A disk body connection portion 499 is provided at the central portion of the disk body 493, which is used to connect the disk body 490 to the support member 162 of the electromagnetic heating cooking utensil 400. The disk body connection portion 499 includes a circular hole with the geometric center axis P9 as the axis. Thus, the disk body 493 is sleeved on the outer periphery of the first end portion 163 of the support member. The disk body 493 and the first end portion 163 of the support member are connected, for example, by bonding, clamping, or screwing.

[0211] The central part of the wire reel 380 is provided with a wire reel through hole 389A extending in the axial direction of the wire reel 380, and the support member 162 is provided in the wire reel through hole 389A. For example, the central part of the wire reel 380 is provided with a cylindrical portion 389C extending in the axial direction of the wire reel 380, and the wire reel through hole 389A is formed inside the cylindrical portion 389C, and the solid part of the cylindrical portion 389C is the side wall 389L of the wire reel through hole 389A (the side wall 389L of the wire reel through hole 389A is also the side wall of the cylindrical portion 389C). The central axis of the cylindrical portion 389C coincides with the central axis PA of the wire reel assembly. The support member 162 is adapted to the wire reel through hole 389A, so that the support member 162 can rotate relative to the wire reel 380 around the central axis PA of the wire reel assembly. For example, the wire drum device 460 further includes a swivel substructure 161, and the side wall 389L of the wire drum through hole 389A is connected to the outer peripheral surface of the second end portion 164 of the support member through the swivel substructure 161, wherein the axis of the swivel substructure 161 coincides with the central axis PA of the wire drum assembly.

[0212] For example, the side wall 389L of the through hole of the wire drum is connected to the outer peripheral surface of the second end 164 of the support member through the revolving substructure 161. The side wall 389L of the through hole of the wire drum is connected to the outer ring of the revolving substructure 161, and the second end 164 of the support member is tightly matched with the inner ring of the revolving substructure 161, so that the cylindrical portion 389C can stably rotate relative to the support member 162, so that the wire drum frame 380 can stably rotate relative to the support member 162. The revolving substructure 161 is configured as a rolling bearing or a sliding sleeve, for example. Preferably, the revolving substructure 161 is made of non-metallic material (such as resin, plastic) so as not to interfere with the magnetic field of the disc winding 382.

[0213] The wire drum device 460 further includes a second blocking member 366, which is disposed at the second end portion 164 of the support member. The second blocking member 366 includes a second blocking portion 366A extending outwardly in the radial direction of the wire drum assembly 470. The outer peripheral surface of the support member 162 includes a blocking surface 369C extending toward the side wall 389L in the radial direction of the wire drum assembly 470, and / or the inner peripheral surface of the wire drum through hole 389A includes a blocking surface 389D extending toward the support member 162 in the radial direction of the wire drum assembly 470, and the wire drum device 460 is configured so that the rotary substructure 161 is limited between the blocking surface 369C (and / or 389D) and the second blocking portion 366A along the axial direction of the wire drum assembly 470.

[0214] When the wire coil device 460 is placed in the accommodating cavity 21 of the pot body 20, the outer peripheral edge of the wire coil rack 380 is connected to the cavity wall of the accommodating cavity 21 (see Figure 1), so that the wire drum frame 380 is supported by the pot body 20. In order to rotate the support member 162, the wire drum device 460 further includes a second transmission wheel 58, which is connected to the support member 162 (for example, it is sleeved on the outer periphery of the support member 162 and engaged with the support member 162 through splines and keyways), and is used to drive the support member 162 to rotate relative to the wire drum frame around the central axis PA of the wire drum assembly under the drive of the driving device 350. In order to allow the driving device 350 to contact the second transmission wheel 58, the second blocking member is provided with an opening 369F, and / or the side wall 389L of the wire drum through hole 389A is provided with an opening 389E, which is used to expose the second transmission wheel 58.

[0215] Specifically, the second transmission wheel 58 is arranged between the rotary substructure 161 and the blocking surface 369C (and / or 389D) along the axial direction of the wire drum assembly 470. Part of the second blocking portion 366A is connected between the rotary substructure 161 and the side wall 389L of the wire drum through hole 389C along the radial direction of the wire drum assembly 470, so that there is a gap in the radial direction between the rotary substructure 161 and the side wall 389L, so that the second transmission wheel 58 can exceed the rotary substructure 161 in the radial direction, which is convenient for connecting with the driving device 350. Preferably, the second transmission gear 58 is provided with an avoidance portion 58A to avoid the outer ring of the rotary substructure 161. That is, the second transmission gear 58 and the support member 162 are both connected to the inner ring of the rotary substructure 161.

[0216] For example, the second blocking portion 366A includes a first additional connection portion 369M and a second additional connection portion 369N, which are arranged at intervals along the radial direction of the wire drum assembly 470, and the first additional connection portion 369M is further outward than the second additional connection portion 369N in the radial direction. The first additional connection portion 369M and the second additional connection portion 369N extend, for example, along the axial direction of the wire drum assembly 470. The first additional connection portion 369M is used to connect with the side wall 389L of the cylindrical portion 389C (for example, by snapping, bonding, or screwing), and the second additional connection portion 369N is used to tightly fit with the outer ring of the rotary auxiliary structure 161. The opening 369F is provided in the first additional connection portion 369M.

[0217] The wire drum device 460 further includes a first blocking member 365. The first blocking member 365 is disposed at the first end portion 163 of the support member. The first blocking member 365 includes a first blocking portion 365A extending outwardly in the radial direction of the wire drum assembly 470, and is used to prevent the support member 162 from moving in the axial direction of the wire drum assembly 470 in a direction away from the second end portion 164 of the support member. That is, the first blocking portion 365A covers at least a portion of the first end portion 163 of the support member in the axial direction.

[0218] like Figure 2As shown, the support member 162 includes a receiving space 162A, and the receiving space 162A is used to receive the temperature sensor assembly 40. The temperature sensor assembly 40 is exposed from the surface of the support member 162 for contacting the cooking container 30, thereby sensing the temperature of the cooking container 30, that is, sensing the temperature of the food. The temperature sensor assembly 40 is exposed from the first end 163 of the support member, and the second end 164 of the support member is provided with a wire outlet for leading out the cable 42 of the temperature sensor assembly 40. Preferably, the receiving space 162A passes through the support member 162 along the axial direction of the cable drum assembly 470. The solid part of the support member 162 constitutes the side wall 162B of the receiving space 162A (the side wall 162B of the receiving space 162A is also the side wall 162B of the support member 162).

[0219] The first blocking member 365 also includes a first connecting portion 365B connected to the first blocking portion 365A, the first connecting portion 365B extends, for example, in the axial direction of the wire drum assembly 470 and is located inside the first blocking portion 365A in the radial direction. The second blocking member 366 also includes a second connecting portion 366B connected to the second blocking portion 366A, the second connecting portion 366B extends, for example, in the axial direction of the wire drum assembly 470 and is located inside the second blocking portion 366A in the radial direction. The first connecting portion 365B and the second connecting portion 366B are connected to each other in the accommodating space 162A (for example, by clamping, bonding, or screwing). The first connecting portion 365B and the second connecting portion 366B are also configured as a sleeve, so that the two are connected to form a sleeve, and the support member 162 is clamped between this sleeve and the cylindrical portion 389C in the radial direction of the wire drum assembly 470. The support member 162 is sandwiched between the first blocking portion 365A and the second blocking portion 366A in the axial direction of the drum assembly 470 .

[0220] When the cable drum device 460 is placed in the accommodating chamber 21, the outer peripheral edge of the cable drum 380 is connected to the chamber wall of the accommodating chamber 21, so that the cable drum 380 is stably supported. The second blocking member 366 is mounted to the cylindrical portion 389C of the cable drum 380, so that the second blocking member 366 is stably supported. In addition, the rotary substructure 161, the second transmission wheel 58, the support member 162 and the first blocking member 365 are all stably supported.

[0221] The temperature sensor assembly 40 is disposed in the inner cavity of the sleeve formed by the first connection portion 365B and the second connection portion 366B. The end of the first blocking member 365 corresponding to the end of the first connection portion 365B connected to the first blocking portion 365A is provided with a through hole 369B for exposing the temperature sensor assembly 40. The second blocking member 366 is provided with a wire hole 369A for passing the cable 42 of the temperature sensor assembly 40. It can be understood that the sleeve-shaped second connection portion 366B can naturally form the wire hole 369A.

[0222] When the cooking container 30 is placed in the pot body 20, in order to protect the temperature sensor assembly 40, the temperature sensor assembly 40 includes a spring 41 extending in the axial direction of the wire coil assembly 470. In order to prevent the temperature sensor assembly 40 from leaving the accommodation space 162A, the first blocking member 365 is provided with a first additional blocking portion 369G, and the second blocking member 366 is provided with a second additional blocking portion 369H. At least part of the temperature sensor assembly 40 is limited between the first additional blocking portion 369G and the second additional blocking portion 369H in the axial direction of the wire coil assembly 470.

[0223] In the present application, the first additional blocking portion 369G is a portion of the first blocking member 365 located around the through hole 369B, and the aperture of the through hole 369B is smaller than the diameter of the spring 41. The first additional blocking portion 369G can also be understood as a portion of the end wall (top wall) of the first blocking member 365. The second additional blocking portion 369H is an annular step surface provided on the inner wall of the sleeve of the second connecting portion 366B, and the diameter of the inner ring of the annular step surface is smaller than the diameter of the spring 41. Thus, the spring 41 is limited between the end wall of the first blocking member 365 and the step surface of the second blocking member 366, so that the temperature sensor assembly 40 cannot be separated from the inner cavity formed by the first connecting portion 365B and the second connecting portion 366B, and thus cannot be separated from the accommodating space 162A.

[0224] like Figure 1 As shown, the coiled wire 382 is located on the lower surface of the wire reel device 460 , so that the coiled wire 382 does not interfere with the turntable 490 and can be conveniently connected to the circuit board assembly 22 .

[0225] The driving device 350 is connected to the turntable 490, and is used to drive the turntable 490 (i.e., the turntable body 493) to rotate around the central axis PA of the wire reel assembly relative to the coiled wire 382 (i.e., the wire reel frame 380, i.e., the pot body 20). Specifically, the driving device 350 is connected to the support member 162, and is used to drive the support member 162 to rotate around the central axis PA of the wire reel assembly relative to the coiled wire 382 (i.e., the wire reel frame 380, i.e., the pot body 20).

[0226] The driving device 350 includes a driving assembly 51 and a transmission assembly 355. The driving assembly 51 is used to provide a driving force to rotate the disk body 493 and the support member 162 relative to the disk winding 382. The transmission assembly 355 is connected between the driving assembly 51 and the support member 162 to transmit the driving force to the disk body 493 and the support member 162.

[0227] The drive assembly 51 is configured as a motor, such as a stepper motor. The motor 51 is electrically connected to the control module of the circuit board assembly 22 to operate under the control of the control module. By controlling the motor 51, the control module can realize the forward and reverse rotation and intermittent rotation of the turntable 490, and the speed and stroke are adjustable. The speed range of the turntable 490 is, for example, 1r / min to 350r / min, preferably 4r / min to 6r / min. Preferably, the output shaft 59 of the motor 51 is made of non-metallic material (such as resin, plastic), so that the output shaft 59 of the motor 51 and the magnetic field of the disc winding 382 do not affect each other. The output shaft 59 of the motor 51 can also be made of metal material. The drive assembly 51 can be arranged on the bottom wall of the accommodating cavity 21, so that the drive assembly 51 is close to the wire drum device 460.

[0228] In order to prevent the magnetic field of the motor 51 from interfering with the magnetic field of the disc winding 382, ​​as shown in FIG. Figure 4 As shown, preferably, the cooking appliance 400 further includes a magnetic shield 52, which is made of metal material and is used to cover at least part of the motor drive device 50 (for example, the motor 51) to shield the alternating magnetic field of the disc winding 382, ​​and also shield the magnetic field of the drive device 50. For example, the motor 51 is mounted on the base 26 of the pot body 20 by two bolts 54, and the magnetic shield 52 can be simultaneously mounted to the base 26 by the two bolts 54, so that the housing of the motor 51 is in contact with the magnetic shield 52. The magnetic shield 52 is provided with an axial hole 56 for the motor output shaft 59 to pass through. Preferably, the cooking appliance 400 further includes a grounding wire 53, one end of which is connected to the magnetic shield 52 and / or the housing of the motor 51 (for example, fixed together with the magnetic shield 52 by bolts 54), and the other end of the grounding wire 53 is connected to the grounding terminal of the electromagnetic heating cooking appliance 400, such as the grounding terminal on the circuit board assembly 22 or the grounding terminal of the power socket 27. Therefore, the grounding wire 53 grounds the housing of the motor 51 and the magnetic shield 52 together to further isolate the magnetic field.

[0229] The transmission assembly 355 at least includes a first transmission wheel 57. The first transmission wheel 57 is used to be coaxially connected to the output shaft 59 of the motor 51 so as to rotate under the drive of the motor 51. The second transmission wheel 58 is connected to the first transmission wheel 57, and the transmission assembly 355 is configured so that the second transmission wheel 58 drives the support member 162 and the rotating disk 490 to rotate synchronously under the drive of the first transmission wheel 57. The first transmission wheel 57 and the second transmission wheel 58 are, for example, both configured as gears, and the two are meshed with each other for transmission. Alternatively, the first transmission wheel 57 and the second transmission wheel 58 are, for example, both configured as friction wheels, and the two are in contact with each other through friction transmission. Alternatively, the first transmission wheel 57 and the second transmission wheel 58 are driven by a belt or a chain. Preferably, the transmission assembly 355 is made of non-metallic material. For example, the first transmission wheel 57 and the second transmission wheel 58 are made of plastic or resin.

[0230] In the illustrated embodiment, the cooking utensil 400 is an electric rice cooker. Based on the wire reel device 460 of the present application, the cooking utensil 400 may also be an electric pressure cooker, an electric stew pot, an electric hot pot, an electric kettle (health pot) or an induction cooker (including a stove and a cooking container).

[0231] Second embodiment

[0232] like Figure 5 As shown, in the second embodiment of the present application, the electromagnetic heating cooking device 500 (hereinafter referred to as the cooking device 500) has a structure similar to that of the cooking device 400, and the difference between the electromagnetic heating cooking device 500 and the cooking device 400 is that the structure of the wire drum device 560 is different from that of the wire drum device 460. Figure 6 As shown, in the wire reel assembly 570, the turntable 490 is used to be arranged below the wire reel rack 380 along the height direction of the cooking utensil 500. The wire reel device 460 is configured so that the turntable 490 can rotate relative to the wire reel rack around the central axis PA of the wire reel assembly. The composition mechanism of the wire reel device 560 is described in detail below.

[0233] Specifically, the wire drum device 560 includes a support member 162 , a wire drum assembly 570 , a rotary sub-structure 161 , a second blocking member 366 , and a temperature sensor assembly 40 .

[0234] The wire reel assembly 570 is disposed on the support 162. The wire reel assembly includes a coiled wire 382, ​​a coiling frame 380, and a turntable 490 (also referred to as a turntable body 490). The main parts of the coiled wire 382, ​​the coiling frame 380, and the turntable 490 are the same as in the first embodiment.

[0235] The coiled wire 382 is connected to the support member 162. The coiled wire 382 is spirally wound around the central axis PA of the wire drum assembly on the surface of the wire drum frame 380 (see Figure 7 ). The wire coiling rack 380 is connected to the support 162, so that the coiled wire 382 is connected to the support 162. The disk body 493 of the turntable 490 is connected to the support 162 and is spaced from the wire coiling rack 380 in the axial direction of the wire coil assembly 570, and is spaced from the coiled wire 382. The disk body 493 is configured to be rotatable relative to the wire coiling rack 380 around the center axis PA of the wire coil assembly, and is rotatable relative to the coiled wire 382. The first area 491 and the second area 492 of the turntable 490 are configured in the same manner as in the cooking appliance 400, and will not be repeated here.

[0236] The wire coiling rack 380 and the disk body 493 extend substantially parallel to each other, so that the turntable 490 can better act on the magnetic field generated by the coiled wire 382. Preferably, the wire coiling rack 380 and the disk body 493 both have radially symmetrical structures, so as to facilitate processing and better match the cooking container 30 which is also radially symmetrical. Preferably, the axial cross-sections of the wire coiling rack 380 and the disk body 493 are both C-shaped structures, so that the coiled wire 382 can surround the side wall of the cooking container 30. In the present application, the wire coiling rack 380 is used to be arranged on the inner side of the C-shaped structure of the disk body 493, that is, the wire coiling rack 380 is used at least above the disk body 493 along the height direction of the cooking utensil 500. The coiled wire 382 is arranged on the outer side of the C-shaped structure of the wire coiling rack 380, that is, the side of the wire coiling rack 380 that faces the disk body 493.

[0237] The support member 162 is, for example, substantially cylindrical. The support member 162 includes a support member first end 163 and a support member second end 164 which are arranged oppositely in the axial direction of the cable drum assembly 570. In the working state, the support member first end 163 is located above the support member second end 164. The cable drum 380 is connected to the support member first end 163, and the drum body 493 is connected to the support member second end 164. The cable drum device 560 is configured so that the drum body 493 can rotate relative to the support member second end 164 around the cable drum assembly central axis PA, and thus can rotate relative to the cable drum 380. Preferably, the support member 162 and the cable drum 380 are integrally formed, for example, integrally injection molded, that is, the support member 162 and the cable drum 380 can be combined into one component.

[0238] Specifically, the central part of the disk body 493 is provided with a disk body through hole 599A extending in the axial direction of the disk body 493, and the support member 162 is arranged in the disk body through hole 599A. For example, the central part of the disk body 493 is provided with a cylindrical part 599C extending in the axial direction of the disk body 493, the internal through hole of the cylindrical part 599C is the disk body through hole 599A, and the solid part of the cylindrical part 599C is the side wall 599L of the disk body through hole 599A. The cylindrical part 599C has a cylindrical part first end 599X and a cylindrical part second end 599Y arranged in opposite directions along the axial direction of the disk body 493, and in the working state, the cylindrical part first end 599X is located above the cylindrical part second end 599Y. The cylindrical part first end 599X is connected to the central part of the disk body 493, and the cylindrical part second end 599Y extends in a direction away from the disk body 493, that is, extends away from the disk body 493. The second end 599Y of the cylindrical portion is, for example, located outside the C-shaped structure of the disk body 493. The central axis of the cylindrical portion 599C coincides with the central axis PA of the wire disk assembly.

[0239] The support member 162 is adapted to the disk body through hole 599A so that the disk body 493 can rotate relative to the support member 162 around the central axis PA of the wire disk assembly. For example, the wire disk device 560 further includes a swivel substructure 161, and the side wall 599L of the disk body through hole 599A is connected to the second end 164 of the support member through the swivel substructure 161, wherein the axis of the swivel substructure 161 coincides with the central axis PA of the wire disk assembly. For example, the inner peripheral surface of the side wall 599L of the wire disk through hole is connected to the outer peripheral surface of the second end 164 of the support member through the swivel substructure 161. The side wall 599L of the wire disk through hole is tightly matched with the outer ring of the swivel substructure 161, and the second end 164 of the support member is tightly matched with the inner ring of the swivel substructure 161, so that the turntable 490 can stably rotate around the support member 162. The swivel substructure 161 is configured, for example, as a rolling swivel substructure or a sliding swivel substructure (such as a bearing, a bushing). Preferably, the rotary sub-structure 161 is made of non-metallic material (such as resin, plastic) so as not to interfere with the magnetic field of the disc-shaped winding 382 .

[0240] The wire drum device 560 further includes a second blocking member 566, which is disposed at the second end portion 164 of the support member. The second blocking member 566 includes a second blocking portion 566A extending outwardly in the radial direction of the wire drum assembly 570. The outer peripheral surface of the support member 162 includes a blocking surface 599M extending toward the cylindrical portion 599C in the radial direction of the wire drum assembly 570. The wire drum device 560 is configured so that the rotary secondary structure 161 is limited between the blocking surface 599M and the second blocking portion 566A in the axial direction of the wire drum assembly 570. The second blocking member 566 is, for example, bonded, clamped, or threadedly connected to the support member 162.

[0241] The inner circumferential surface of the plate body through hole 599A is provided with a protrusion 599B extending toward the support member 162 in the radial direction of the wire plate assembly 570, and the protrusion 599B is used to contact the side of the rotary substructure 161 facing the first end portion 163 of the support member. Thus, the rotary substructure 161 can support the cylindrical portion 599C, that is, support the turntable 490. The cylindrical portion 599C can be regarded as a plate body connection portion of the plate body 490 for connecting with the cooking utensil 500.

[0242] When the wire coil device 560 is placed in the accommodating cavity 21 of the pot body 20, the outer peripheral edge of the wire coil rack 380 is connected to the cavity wall of the accommodating cavity 21 (see Figure 5 ), so that the wire reel 380 is supported by the pot body 20. The swivel substructure 161 is stably supported by the support member 162 and the second blocking member 566. Then, the swivel substructure 161 provides stable support to the turntable 490. Thus, the various components of the wire reel device 560 can be stably assembled together and stably supported in the accommodating chamber 21.

[0243] like Figure 6 As shown, the support member 162 includes a receiving space 162A, and the receiving space 162A is used to receive the temperature sensor assembly 40. The temperature sensor assembly 40 is exposed from the surface of the support member 162 for contacting the cooking container 30, thereby sensing the temperature of the cooking container 30, that is, sensing the temperature of the food. The temperature sensor assembly 40 is exposed from the first end 163 of the support member, and the second end 164 of the support member is provided with an outlet for leading out the cable 42 of the temperature sensor assembly 40. Preferably, the receiving space 162A passes through the support member 162 along the axial direction of the cable drum assembly 570. The second blocking member 566 also includes a second connecting portion 566B connected to the second blocking portion 566A, and the second connecting portion 566B, for example, extends inward from the second blocking portion 566A substantially along the radial direction of the cable drum assembly 570 to form at least a portion of the outer wall (e.g., bottom wall) of the receiving space 162A. Thus, the second connecting portion 566B can support the temperature sensor assembly 40. The second blocking member 566 is provided with a wire passage hole 569A for passing the cable 42 of the temperature sensor assembly 40 .

[0244] When the cooking container 30 is placed in the pot body 20, in order to protect the temperature sensor assembly 40, the temperature sensor assembly 40 includes a spring 41 extending in the axial direction of the wire drum assembly 570. In order to protect the temperature sensor assembly 40 from being separated from the accommodating space 162A, the first end portion 163 of the support member includes a first additional blocking portion 569G, and at least part of the temperature sensor assembly 40 is limited between the first additional blocking portion 569G and the second connecting portion 566B. In the present application, the first additional blocking portion 569G is, for example, the top wall of the accommodating space 162A, and the top wall is provided with a circular hole 569H to expose the temperature sensor assembly 40. The aperture of the circular hole 569H is smaller than the diameter of the spring 41. The diameter of the wire hole 569A is also smaller than the diameter of the spring 41. The first additional blocking portion 569G and the second connecting portion 566B limit the spring 41 in the axial direction of the wire drum assembly 570, so that the temperature sensor assembly 40 will not be separated from the accommodating space 162A.

[0245] like Figure 6 As shown, the wire coiling rack 380 is located at the periphery of the first end portion 163 of the support member, and the coiled wire 382 is coiled around the central axis PA of the wire coil assembly on the surface of the wire coiling rack 380 on the side facing the second end portion 164 of the support member. The coiled wire 382 is not disposed on the side of the wire coiling rack 380 facing the cooking container 30, which is beneficial to protecting the coiled wire 382. The turntable 490 is connected to the second end portion 164 of the support member and can rotate around the support member 162. The coiled wire 382 is sandwiched between the wire coiling rack 380 and the turntable 490. In order to better connect the enameled wire 389B of the coiled wire 382 to the circuit board assembly 22, as shown in FIG. Figure 8As shown, the side wall of the accommodation space 162A located at the first end 163 of the support member is provided with a first additional wire hole 169B, and the second blocking member 566 is provided with a second additional wire hole 569I. The wire 389B of the coiled winding 382 passes through the first additional wire hole into the accommodation space 162A, and then passes through the second additional wire hole 569I out of the accommodation space 162A. Figure 1 As shown, after the enameled wire 389B passes through the accommodating space 162A from the second additional wire hole 569I, it is located below the turntable 490 and does not interfere with the turntable 490, so it can be easily connected to the circuit board assembly 22.

[0246] like Figure 5 and Figure 6 As shown, the driving device 50 is connected to the disc body 493, and is used to drive the disc body 493 to rotate relative to the disc winding 382 (i.e., the disc frame 380, i.e., the support member 162, i.e., the pot body 20) around the central axis PA of the wire disc assembly. Specifically, the driving device 50 includes a driving assembly 51 and a transmission assembly 55. The driving assembly 51 is used to provide a driving force for rotating the disc body 493 relative to the disc winding 382. The transmission assembly 55 is connected between the driving assembly 51 and the disc body 493, and is used to transmit the driving force to the disc body 493.

[0247] The drive assembly 51 is configured as a motor, for example, and its construction, installation and control methods are the same as those in the first embodiment (see Fig. 9 ). The transmission assembly 55 is different from the transmission assembly 355. The transmission assembly 55 includes at least a first transmission wheel 57 and a second transmission wheel 58. The first transmission wheel 57 is used to be coaxially connected to the output shaft 59 of the motor 51 so as to rotate under the drive of the motor 51. The second transmission wheel 58 is used to be connected to the rotating disk 490 of the wire drum assembly 570 and is also connected to the first transmission wheel 57. The transmission assembly 55 is constructed so that the second transmission wheel 58 drives the rotating disk 490 to rotate synchronously under the drive of the first transmission wheel 57. The materials and connection methods of the first transmission wheel 57 and the second transmission wheel 58 are the same as those in the first embodiment.

[0248] The second transmission wheel 58 is used to connect the rotating disk 490. Preferably, the second transmission wheel 58 is used to connect the cylindrical portion 599C of the rotating disk 490. The second transmission wheel 58 is an annular structure, and is used to be sleeved on the outer periphery of the cylindrical portion 599C. Fig.10 As shown, the outer peripheral surface of the cylindrical portion 599C is provided with a connection structure 599D for connecting the second transmission wheel 58 of the driving device 50. The connection structure 599D can be regarded as a part of the cylindrical portion 599C.

[0249] Specifically, the connection structure 599D includes a first limit stop surface 599E, which extends outward from the outer peripheral surface of the cylindrical portion 599C in the radial direction of the cylindrical portion 599C and toward the second end 599Y of the cylindrical portion, and is used to limit the second transmission wheel 58 from moving along the axial direction of the cylindrical portion 599C toward the disk body 493. The first limit stop surface 599E is formed by, for example, an annular convex rib or an annular step surface on the outer peripheral surface of the cylindrical portion 599C.

[0250] like Fig. 9 As shown, the inner circumferential surface of the second transmission wheel 58 is provided with at least one second connecting body 58F. Fig.10 As shown, the connection structure 599D includes at least one first connection body 599F, and the first connection body 599F is used to be arranged corresponding to the second connection body 58F and is used to connect the corresponding second connection body 58F. The first connection body 599F is closer to the second end 599Y of the cylindrical portion than the first limit stop surface 599E. When the second transmission wheel 58 is located at the set position of the cylindrical portion 599C, the first connection body 599F is used to be engaged with the second connection body 58F to limit the second transmission wheel 58 from rotating relative to the cylindrical portion 599C, so that the second transmission wheel 58 can drive the cylindrical portion 599C to rotate synchronously.

[0251] In the illustrated embodiment, the first connecting body 599F is a convex rib provided on the outer peripheral surface of the cylindrical portion 599C, and the second connecting body 58F is a limiting groove provided on the inner peripheral surface of the second transmission wheel 58, the limiting groove extending along the axial direction of the second transmission wheel 58, and the limiting groove 58F is used to accommodate the convex rib 599F. Alternatively, the first connecting body 599F is a limiting groove provided on the outer peripheral surface of the cylindrical portion 599C, the limiting groove extending along the axial direction of the cylindrical portion 599C, and the second connecting body 58F is a convex rib provided on the inner peripheral surface of the transmission wheel 58, and the limiting groove 599F is used to accommodate the convex rib 58F.

[0252] Preferably, the second transmission wheel 58 includes a plurality of second connecting bodies 58F, and the plurality of second connecting bodies 58F are, for example, evenly spaced along the circumferential direction of the second transmission wheel 58. A plurality of first connecting bodies 599F are correspondingly disposed on the outer circumferential surface of the cylindrical portion 599C.

[0253] The connection structure 599D further includes at least one second stopper 599G, which is disposed on the outer peripheral surface of the cylindrical portion 599C. The second stopper 599G includes a second stopper surface 599H on the side facing the first end 599X of the cylindrical portion. The second stopper surface 599H extends outward from the outer peripheral surface of the cylindrical portion 599C along the radial direction of the cylindrical portion 599C. The second stopper surface 599H is closer to the second end 599Y of the cylindrical portion 599C than the first stopper surface 599E. Thus, when the second transmission wheel 58 is mounted on the cylindrical portion 599C, the second transmission wheel 58 is limited between the first stopper surface 599E and the second stopper surface 599H along the axial direction of the cylindrical portion 599C.

[0254] Since the second limit stopper 599G protrudes from the outer circumferential surface of the cylindrical portion 599C, in order to facilitate the installation of the second transmission wheel 58, the portions of the cylindrical portion 599C located on both sides of the second limit stopper 599G along the circumferential direction of the cylindrical portion 599C are configured as functional grooves 599J extending in the axial direction of the cylindrical portion 599C, and the functional grooves 599J penetrate the side wall of the cylindrical portion 599C. Thus, the portion of the side wall of the cylindrical portion 599C corresponding to the second limit stopper 599G is cut off from the side walls on both sides, so that the portion can swing in the radial direction of the cylindrical portion 599C. The second limit stopper 599G has a first outer surface 599I located on the side facing away from the axis of the cylindrical portion 599C, and the first outer surface 599I is configured to be inclined relative to the axis of the cylindrical portion 599C, so that the distance between the end of the first outer surface 599I facing the second end 599Y of the cylindrical portion 599C and the axis of the cylindrical portion 599C is smaller than the distance between the end of the first outer surface 599I facing the first end 599X of the cylindrical portion 599C and the axis of the cylindrical portion 599C, that is, the first outer surface 599I is inclined from the outside to the inside. Therefore, the outer diameter of the portion of the cylindrical portion 599C at the second limit stopper 599G gradually increases from bottom to top.

[0255] When installing the second transmission wheel 58, the second transmission wheel 58 is sleeved on the outer circumference of the cylindrical portion 599C from bottom to top. The first outer surface 599I has a guiding function, and the functional groove 599J can enable the second limit stop 599G to move toward the space inside the cylindrical portion 599C under the pressure of the second transmission wheel 58, so that the second transmission wheel 58 can pass over the second limit stop 599G. When the second transmission wheel 58 moves to a predetermined position, the second limit stop 599G uses the elasticity of the material of the cylindrical wall of the cylindrical portion 599C to reset the second transmission wheel 58 between the first limit stop surface 599E and the second limit stop surface 599H.

[0256] Preferably, a plurality of second limit stops 599G are provided on the outer periphery of the cylindrical portion 599C, and the plurality of second limit stops 599G are distributed at equal intervals along the circumferential direction of the cylindrical portion 599C, for example.

[0257] In order to facilitate the connection between the cylindrical portion 599C and the driving device 50 , preferably, the cylindrical portion 599C is located outside the C-shaped structure of the disk body 490 .

[0258] In an embodiment not shown in the present application, the cooking utensil 500 is configured so that the cooking container 30 can rotate in the pot body 20 under the drive of the driving device 50, while the plate body 490 remains stationary relative to the pot body 20. For example, the outer peripheral edge of the plate body 493 can be connected to the side wall of the accommodating cavity 21, the second end 164 of the support member extends downward beyond the cylindrical portion 599C, the second transmission wheel 58 is connected to the portion of the second end 164 of the support member that exceeds the cylindrical portion 599C, and at the same time, the first end 163 of the support member is provided with a clutch for connecting with the cooking container 30. Thus, the driving device 50 drives the support member 162 to rotate, and the support member 162 drives the cooking container 30 to rotate synchronously through the clutch. In such an embodiment, the turntable 490 still rotates relative to the disc winding 382, ​​the cooking container 30 rotates relative to the turntable 490 around the central axis PA of the wire reel assembly (i.e., the geometric central axis P9, i.e., the central axis P8 of the wire reel rack), and the cooking container 30 and the non-uniform magnetic field generated by the wire reel assembly 570 can still rotate relative to each other.

[0259] Compared with the first embodiment, in the second embodiment, the turntable 490 is closer to the disc-shaped winding 382. In the second embodiment, in the working state (the assembled state of the wire reel device 560), the distance between the magnetic line gathering member 495 and the disc-shaped winding 382 is 1 mm to 15 mm, that is, the gap between the magnetic line gathering member 495 and the disc-shaped winding 382 is 1 mm to 15 mm.

[0260] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0261] In understanding the scope of the present application, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0262] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by being directly secured to the other element; a configuration where an element is indirectly secured to another element by being secured to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with another element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0263] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present application. The features described herein in one embodiment may be applied to another embodiment individually or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0264] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. In addition, it can be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed by the present application.

Claims

1. A disc body for use with an electromagnetic heating coil winding of an electromagnetic heating cooking utensil, characterized in that: The disc body comprises: a disc body configured in a substantially symmetrical shape, the disc body having a geometric center axis and being made of a first material; and At least one first area is arranged on the disk body, the first areas are arranged at intervals along the circumferential direction of the disk body, and each first area is provided with a second material different from the first material, which is used to gather the magnetic lines of force generated by the electromagnetic heating disc winding.

2. The tray according to claim 1, characterized in that: At least one magnetic line gathering member is arranged at the first region, and the magnetic line gathering member comprises a second material different from the first material.

3. The tray according to claim 2, characterized in that: The thickness of the magnetic line gathering member is 2 mm to 10 mm.

4. The tray according to claim 3, characterized in that: The area of ​​a single magnetic field gathering piece is 28mm 2 Up to 5024mm 2 ; and / or The area of ​​all the magnetic flux converging members accounts for 10% to 70% of the area of ​​the disk body.

5. The tray according to claim 1, characterized in that: The first material is a non-magnetic material or a metal with a magnetic permeability less than or equal to 10 B / H, and the second material is a metal with a magnetic permeability greater than or equal to 100 B / H.

6. The tray according to claim 2, characterized in that: The magnetic field line gathering member is connected to the disk body via at least one of the following connection structures: The magnetic field line gathering member is embedded in the disk body. The magnetic line gathering member is attached to the surface of the disk body, and The magnetic line gathering member is snap-connected with the disk body.

7. The tray according to claim 1, characterized in that: The disk body is also provided with at least one heat dissipation area.

8. The tray according to claim 7, characterized in that: The heat dissipation area is provided with at least one heat dissipation hole.

9. The tray according to any one of claims 1 to 8, characterized in that: A dish body connecting portion is arranged at the central part of the dish body, and is used for connecting the dish body to the electromagnetic heating cooking utensil.

10. The tray according to claim 9, characterized in that: The disk body connecting portion includes a cylindrical portion having the geometric center axis as an axis.

11. The tray according to claim 10, characterized in that: The first end of the cylindrical portion is connected to the central portion of the disk body, the second end of the cylindrical portion extends in a direction away from the disk body, the central axis of the cylindrical portion coincides with the geometric center axis, and the cylindrical portion is provided with a connecting structure for connecting a driving device, wherein the driving device is used to drive the disk body to rotate around the geometric center axis.

12. The tray according to claim 11, characterized in that: The driving device comprises a transmission wheel, which is an annular structure and is used to be sleeved on the outer periphery of the cylindrical part. The connecting structure is used to connect the transmission wheel, and the connecting structure includes a first limit stop surface, which extends outward from the outer peripheral surface of the cylindrical portion along the radial direction of the cylindrical portion and toward the second end of the cylindrical portion, and is used to limit the movement of the transmission wheel along the axial direction of the cylindrical portion toward the disk body.

13. The tray according to claim 12, characterized in that: At least one second connecting body is provided on the inner circumferential surface of the transmission wheel, and the connecting structure includes at least one first connecting body, the first connecting body is used to be arranged corresponding to the second connecting body and to connect the corresponding second connecting body, and the first connecting body is closer to the second end of the cylindrical portion than the first limit stop surface; When the transmission wheel is located at the set position of the cylindrical portion, the first connecting body is used to engage with the second connecting body to limit the transmission wheel from rotating relative to the connecting structure.

14. The tray according to claim 13, characterized in that: The second connecting body is a limiting groove provided on the inner peripheral surface of the transmission wheel, the limiting groove extends along the axial direction of the transmission wheel, and the first connecting body is a convex rib provided on the outer peripheral surface of the cylindrical portion, the limiting groove is used to accommodate the convex rib; or, The second connecting body is a convex rib arranged on the inner circumferential surface of the transmission wheel, and the first connecting body is a limiting groove arranged on the outer circumferential surface of the cylindrical portion. The limiting groove extends along the axial direction of the cylindrical portion and is used to accommodate the convex rib.

15. The tray according to claim 12, characterized in that: The connecting structure also includes at least one second limit stop member, which is arranged on the outer peripheral surface of the cylindrical portion, and the side of the second limit stop member facing the first end of the cylindrical portion includes a second limit stop surface, and the second limit stop surface extends outward from the outer peripheral surface of the cylindrical portion along the radial direction of the cylindrical portion, and the second limit stop surface is closer to the second end of the cylindrical portion than the first limit stop surface.

16. The tray according to claim 15, characterized in that: The second limit stopper has a first outer surface located on a side facing away from the cylindrical portion, and the first outer surface is configured to be inclined relative to the axis of the cylindrical portion, so that the distance between the end of the first outer surface facing the second end of the cylindrical portion and the axis of the cylindrical portion is smaller than the distance between the end of the first outer surface facing the first end of the cylindrical portion and the axis of the cylindrical portion. Portions of the cylindrical portion located on both sides of the second limit stopper along the circumferential direction of the cylindrical portion are configured as functional grooves extending along the axial direction of the cylindrical portion, and the functional grooves penetrate through the side wall of the cylindrical portion.

17. The tray according to claim 11, characterized in that: The axial cross section of the disc body is a C-shaped structure.

18. The tray according to claim 17, characterized in that: The second end of the cylindrical portion is located outside the C-shaped structure.

19. A wire reel assembly for an electromagnetic heating cooking utensil, characterized in that: include: A wire coiling rack, the wire coiling rack having a wire coiling rack central axis; A coiled wire, the coiled wire is spirally wound around the central axis of the coiled wire frame on the surface of the coiled wire frame, and the coiled wire is used to form a resonant inductor of an electromagnetic heating resonant circuit to generate an alternating magnetic field required for electromagnetic heating after power is turned on; and The disc body according to any one of claims 1 to 18, wherein the disc body is used to be spaced apart from the wire coiling frame, and the geometric center axis is substantially coincident with the center axis of the wire coiling frame.

20. An electromagnetic heating cooking appliance, characterized in that: include: Receiving cavity; The wire drum assembly according to claim 19, wherein the wire drum assembly is located in the accommodating cavity; A cooking container for holding food, the cooking container being at least partially made of ferromagnetic material, the cooking container having a cooking container central axis, the cooking container being detachably disposed on one side of the wire reel assembly, and the cooking container central axis substantially coincides with the geometric central axis; and A driving device is connected to the disc body and is used to drive the disc body to rotate around the geometric center axis relative to the wire coiling rack.

21. The electromagnetic heating cooking device according to claim 20, characterized in that: The driving device comprises: A drive assembly for providing a driving force to rotate the disc body relative to the cable drum; and The transmission assembly is connected between the driving assembly and the disk body and is used for transmitting the driving force to the disk body.

22. The electromagnetic heating cooking device according to claim 21, characterized in that: The drive assembly is configured as a motor; and / or The electromagnetic heating cooking appliance further comprises a grounding wire, one end of which is connected to the housing of the driving assembly, and the other end of which is connected to a grounding terminal of the electromagnetic heating cooking appliance.

23. The electromagnetic heating cooking device according to claim 21, characterized in that: The transmission component is made of non-metallic material.

24. The electromagnetic heating cooking device according to claim 20, characterized in that: It also includes a magnetic shielding cover, which is used to cover at least part of the driving device to shield the alternating magnetic field.

25. The electromagnetic heating cooking device according to claim 24, characterized in that: The invention also comprises a grounding wire, one end of which is connected to the magnetic shield, and the other end of which is connected to the grounding terminal of the electromagnetic heating cooking appliance.

26. The electromagnetic heating cooking device according to any one of claims 20 to 25, characterized in that: The first region is provided with at least one magnetic line of force gathering member, the magnetic line of force gathering member comprises a second material different from the first material, and the distance between the magnetic line of force gathering member and the disc-shaped winding is 1 mm to 15 mm.

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