Wire coil device and electromagnetic heating cooking utensil

Abstract

The invention discloses a wire coil device and an electromagnetic heating cooking utensil. The wire coil device comprises a supporting piece and a wire coil assembly. The wire coil assembly is arranged on the supporting piece and provided with a wire coil assembly central axis. The wire coil assembly comprises a disc-shaped winding wire and a rotating disc. The disc-shaped winding wire is arranged on the wire coil assembly and used for generating an alternating magnetic field after being powered on, and the disc-shaped winding wire is wound around the central axis of the wire coil assembly. The rotary disc comprises a disc body, the disc body is connected to the supporting piece, and the disc body is configured to rotate around the central axis of the wire coil assembly relative to the disc-shaped winding wire. The disc body is alternately provided with at least one first area and at least one second area along the circumferential direction of the disc assembly, and the first area comprises a material different from that of the disc body, so that the magnetic field intensity of the alternating magnetic field at the first area is different from that at the second area. According to the application, the non-uniform magnetic field is set and the magnetic field is rotated, so that the heated position of the cooking space can be rotated.

Description

Technical Field

[0001] The present application relates to the technical field of cooking utensils, and in particular to a wire reel device for electromagnetic heating cooking utensils and an electromagnetic heating cooking utensils 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, a wire reel device and an electromagnetic heating cooking appliance are needed to at least partially solve the above problems. Summary of the invention

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

[0005] In order to at least partially solve the above problems, the first aspect of the present application provides a wire reel device for electromagnetic heating cooking utensils, comprising:

[0006] Support members; and

[0007] A wire drum assembly is arranged on the support member, the wire drum assembly has a central axis of the wire drum assembly, and the wire drum assembly comprises:

[0008] A coiled wire is arranged on the coil assembly, the coiled wire 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, and the coiled wire is arranged around the central axis of the coil assembly, and

[0009] A turntable, the turntable comprising:

[0010] a disc body connected to the support, the disc body being configured to be rotatable relative to the disc-shaped winding wire about a central axis of the wire disc assembly, and

[0011] At least one first area and at least one second area are arranged on the turntable, and the first area and the second area are alternately arranged on the disk body along the circumferential direction of the wire disk assembly. The first area includes a material different from that of the disk body, so that the magnetic field strength of the alternating magnetic field at the first area is different from the magnetic field strength at the second area.

[0012] According to the present application, the wire reel device can construct a magnetic field with uneven intensity distribution along the circumferential direction, and can rotate the magnetic field, so that the heated part in the cooking space rotates, and the food in the cooking space is heated evenly through the rotation.

[0013] Optionally,

[0014] A magnetic field line gathering member is provided at the first area;

[0015] The cable drum assembly further comprises a cable drum frame connected to the support member, the cable drum frame being ...

[0016] The reel body is configured to be rotatable relative to the reel frame around a central axis of the reel assembly.

[0017] According to the present application, the magnetic force gathering member can gather the magnetic force lines and focus the magnetic field energy to form point-like heating. When the disk body rotates, a multi-point heat source rotation heating effect can be achieved, thereby achieving a variable heating heat convection shape, increasing the cooking convection tumbling effect, making the rice heating more uniform, and improving the problem of partial mushy or dry rice after cooking. The rapid rotation of the magnetic force gathering member can achieve a stronger magnetic field shielding effect than the existing IH static magnetic strip. The rotation of the disk 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.

[0018] Further, the coiled wire is coiled around the central axis of the wire reel assembly on a surface of the wire reel frame on a side facing the reel body.

[0019] According to the present application, the arrangement of the coiled wire is simple.

[0020] Optionally, the support member includes a first end portion of the support member and a second end portion of the support member which are arranged oppositely along the axial direction of the wire drum assembly, the wire drum rack is connected to the first end portion of the support member, the drum body is connected to the second end portion of the support member, and the wire drum device is constructed so that the drum body can rotate relative to the second end portion of the support member around the central axis of the wire drum assembly.

[0021] According to the present application, the disc body is easily rotated relative to the disc-shaped winding.

[0022] Optionally,

[0023] A disc through hole extending in the axial direction of the wire disc assembly is provided in the central portion of the disc body, and the support member is adapted to the disc through hole so that the disc body can rotate around the central axis of the wire disc assembly relative to the second end of the support member.

[0024] Furthermore, the support member is arranged in the through hole of the disc body.

[0025] The wire drum device further comprises a rotary auxiliary structure, through which the through hole of the drum body and the second end of the support member are connected, wherein the axis of the rotary auxiliary structure coincides with the central axis of the wire drum assembly.

[0026] According to the present application, the disk body can stably rotate around the support member.

[0027] Optionally,

[0028] The wire drum device further comprises a second blocking member, which is disposed at the second end of the support member, and the second blocking member comprises a second blocking portion extending outwardly in the radial direction of the wire drum assembly.

[0029] The outer peripheral surface of the support member includes a blocking surface extending toward the cylindrical portion in the radial direction of the wire drum assembly,

[0030] The wire drum device is configured such that the rotary auxiliary structure is constrained between the blocking surface and the second blocking portion along the axial direction of the wire drum assembly.

[0031] According to the present application, the pivoting secondary structure is stably connected to the outer periphery of the support.

[0032] Optionally, the inner circumferential surface of the disc body through hole is provided with a protrusion extending toward the support member along the radial direction of the wire disc assembly, and the protrusion contacts the side of the rotary sub-structure facing the first end of the support member.

[0033] According to the present application, the rotary secondary structure supports the protrusion, and further supports the rotary disc.

[0034] Optionally, the support member includes a accommodating space that passes through the support member along the axial direction of the wire drum assembly, and the second blocking member also includes a second connecting portion connected to the second blocking portion, and the second connecting portion extends inward from the second blocking portion along the radial direction of the wire drum assembly to form at least a portion of the outer wall of the accommodating space.

[0035] According to the present application, functional components can be arranged in the accommodating space of the support member, so that the function of the cable drum device is more powerful.

[0036] Optionally,

[0037] The wire coiling rack is located at the outer periphery of the first end of the support member, and the coiled wire is wound around the central axis of the wire coil assembly on the surface of the wire coiling rack on the side facing the second end of the support member.

[0038] The side wall of the accommodating space located at the first end of the supporting member is provided with a first additional wire passing hole, and the second blocking member is provided with a second additional wire passing hole.

[0039] The coil-wound wire passes through the first additional wire-passing hole into the accommodating space, and then passes through the second additional wire-passing hole out of the accommodating space.

[0040] According to the present application, the coil-wound conductor and the turntable do not interfere with each other.

[0041] Optionally, a cylindrical portion extending along the axial direction of the wire reel assembly is provided in the central portion of the disk body, the disk body through hole is formed inside the cylindrical portion, 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 central axis of the wire reel assembly, 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 central axis of the wire reel assembly relative to the support member.

[0042] According to the present application, the connection method between the driving device and the turntable is simple.

[0043] Optionally,

[0044] The driving device includes a second transmission wheel, which is an annular structure and is used to be sleeved on the outer periphery of the cylindrical portion.

[0045] The connecting structure is used to connect the second 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 second transmission wheel from moving toward the disk body along the axial direction of the cylindrical portion.

[0046] According to the present application, the driving device has a simple structure and stable performance.

[0047] Optionally,

[0048] At least one second connecting body is provided on the inner circumferential surface of the second 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;

[0049] When the second 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 second transmission wheel from rotating relative to the cylindrical portion.

[0050] According to the present application, by connecting the first connecting body with the second connecting body, the second transmission wheel can drive the cylindrical portion to rotate, thereby driving the turntable to rotate.

[0051] Optionally,

[0052] The second connecting body is a limiting groove provided on the inner circumferential surface of the second transmission wheel, the limiting groove extends along the axial direction of the second transmission wheel, and the first connecting body is a convex rib provided on the outer circumferential surface of the cylindrical portion, the limiting groove is used to accommodate the convex rib; or,

[0053] The second connecting body is a convex rib arranged on the inner circumferential surface of the second 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.

[0054] According to the present application, the first connector and the second connector are simply arranged and have stable performance.

[0055] 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.

[0056] According to the present application, the second transmission wheel is clamped between the first limit stop surface and the second limit stop surface.

[0057] Optionally,

[0058] The second limit stopper has a first outer surface located on a side facing away from the axis of 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.

[0059] 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.

[0060] According to the present application, the second transmission wheel can be conveniently installed on the outer periphery of the cylindrical portion.

[0061] Optionally,

[0062] The rotary auxiliary structure is configured as a rolling bearing or a sliding sleeve; and / or

[0063] The rotary auxiliary structure is made of non-metallic material.

[0064] According to the present application, the components of the wire drum device are made of non-metallic materials, so as not to interfere with the alternating magnetic field generated by the coiled wire.

[0065] Optionally, the axial cross-sections of the cable reel and the reel body are both C-shaped structures.

[0066] further,

[0067] The coiled wire is arranged outside the C-shaped structure of the coiling rack; and / or

[0068] The wire coiling rack is arranged on the inner side of the C-shaped structure of the coil body.

[0069] According to the present application, the wire rack is constructed in a C-shape so as to surround the bottom and sides of the pot for holding food.

[0070] Optionally, the support member is integrally formed with the cable drum.

[0071] According to the present application, the number of components of the cable drum device is reduced, thereby making assembly easier.

[0072] Optionally, the second area is provided with at least one heat dissipation hole.

[0073] According to the present application, the cable drum device has good heat dissipation performance.

[0074] Optionally, the disk body is made of a first material, the first region is provided with at least one magnetic line of force gathering member, and the magnetic line of force gathering member comprises a second material different from the first material.

[0075] Furthermore, 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.

[0076] According to the present application, the method of forming an uneven electromagnetic heating magnetic field is simple. The magnetic force line gathering member can gather the magnetic force lines and focus the magnetic field energy to form point-like heating. When the disk 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 uniform, and improving the problem of partial rottenness or dryness of rice after cooking. The rapid rotation of the magnetic force line gathering member can achieve a stronger magnetic field shielding effect than the existing IH static magnetic strip.

[0077] Optionally,

[0078] The area of ​​a single magnetic field gathering piece is 28mm 2 Up to 5024mm 2 ; and / or

[0079] The area of ​​all the magnetic flux converging members accounts for 10% to 70% of the area of ​​the disk body.

[0080] According to the present application, the area of ​​the magnetic field line gathering member can be flexibly set according to the cooking utensil.

[0081] Optionally, the magnetic field line gathering member is connected to the disk body via at least one of the following connection structures:

[0082] The magnetic field line gathering member is embedded in the disk body.

[0083] The magnetic line gathering member is attached to the surface of the disk body, and

[0084] The magnetic line gathering member is snap-connected with the disk body.

[0085] According to the present application, the connection method between the magnetic line gathering member and the disk body is flexible.

[0086] Optionally,

[0087] The distance between the magnetic field line gathering member and the disc winding is 1 mm to 15 mm; and / or

[0088] The thickness of the magnetic line gathering member is 2 mm to 10 mm.

[0089] According to the present application, the distance between the magnetic line gathering member and the disc-shaped winding can be flexibly set, and the thickness of the magnetic line gathering member can be flexibly set.

[0090] A second aspect of the present application provides an electromagnetic heating cooking appliance, comprising:

[0091] Receiving cavity;

[0092] According to any one of the technical solutions of the first aspect, the wire reel device is located in the accommodating cavity, wherein the wire reel rack is connected to the cavity wall of the accommodating cavity;

[0093] A cooking container for holding food, the cooking container comprising a ferromagnetic material, the cooking container being detachably arranged on one side of the wire reel device from the wire reel device; and

[0094] A driving device is connected to the disc body and is used to drive the disc body to rotate relative to the disc-shaped winding around the central axis of the wire disc assembly.

[0095] According to the present application, the wire reel device can construct a magnetic field with uneven intensity distribution in the circumferential direction, and the driving device can rotate the magnetic field, thereby rotating the heated part of the cooking container, so that the food in the cooking container is heated evenly through rotation.

[0096] Optionally, the driving device comprises:

[0097] a drive assembly for providing a driving force for rotating the disc body relative to the disc-shaped winding; and

[0098] 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.

[0099] According to the present application, the driving device has a simple structure.

[0100] Optionally, the drive assembly is configured as a motor; and / or

[0101] The electromagnetic heating cooking appliance further comprises a grounding wire, one end of which is connected to the housing of the driving component, and the other end of which is connected to the grounding terminal of the electromagnetic heating cooking appliance.

[0102] According to the present application, the drive assembly has simple control, stable performance and low cost. The grounding wire can help the drive assembly resist electromagnetic interference.

[0103] Optionally, the transmission assembly is made of non-metallic material.

[0104] According to the present application, the transmission assembly is not disturbed by the magnetic field of the disc-shaped winding.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] Optionally, the cooking container is detachably arranged at least above the wire reel device, so that the central axis of the cooking container and the central axis of the wire reel assembly extend along the height direction of the electromagnetic heating cooking appliance.

[0109] According to the present application, the wire reel assembly can form a magnetic field that is unevenly distributed along the circumferential direction of the wire reel assembly, and the driving device can rotate the magnetic field, thereby causing the heated part of the cooking container to rotate along the circumferential direction, so that the food in the cooking container is heated evenly through rotation.

[0110] Optionally, the electromagnetic heating cooking utensil is one of an electric rice cooker, an electric stew pot, an electric pressure cooker, an electric hot pot, an electric frying pan and an electric deep fryer, or a similar utensil to the one of the utensil.

[0111] According to the present application, the wire reel device can be widely applicable to a variety of electromagnetic heating cooking utensils. BRIEF DESCRIPTION OF THE DRAWINGS

[0112] 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.

[0113] In the attached figure:

[0114] Figure 1 It is a side cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a preferred embodiment of the present application;

[0115] 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;

[0116] Figure 3 for Figure 1 An exploded schematic diagram of a part of the internal structure of the electromagnetic heating cooking device shown, wherein a cooking container and a wire reel device are shown;

[0117] Figure 4 for Figure 1 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;

[0118] Figure 5for 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;

[0119] Figure 6 for Figure 3 A bottom view of the disc body is shown.

[0120] Description of reference numerals:

[0121] 10: Cover

[0122] 20: Claypot

[0123] 21: Accommodation cavity

[0124] 22: Circuit board assembly

[0125] 26: Base

[0126] 27: Power socket

[0127] 30: Cooking Container

[0128] 31: Cooking Space

[0129] 40: Temperature sensor assembly

[0130] 41: Spring

[0131] 42: Cable

[0132] 50: Drive device

[0133] 51: Drive components / motor

[0134] 52: Magnetic shield

[0135] 53: Ground wire

[0136] 54: Bolt

[0137] 55: Transmission components

[0138] 56: Shaft hole

[0139] 57: First transmission wheel

[0140] 58: Second transmission wheel

[0141] 58F: Second connector

[0142] 59: Motor output shaft

[0143] 161: Rotational auxiliary structure

[0144] 162: Support

[0145] 162A: Accommodation space

[0146] 162B: Side wall of the storage space

[0147] 163: First end of support member

[0148] 164: Second end of the support member

[0149] 169B: First additional cable hole

[0150] 380: Cable reel

[0151] 382: Coil winding

[0152] 389B: Enameled wire

[0153] 490: Turntable

[0154] 491: First Area

[0155] 492: Second Area

[0156] 493: Disk body

[0157] 495: Magnetic field gathering device

[0158] 496: Heat dissipation holes

[0159] 500: Induction heating cooking appliances

[0160] 560: Cable drum device

[0161] 566: Second blocking member

[0162] 566A: Second blocking part

[0163] 566B: Second connection part

[0164] 569A: Cable hole

[0165] 569G: First additional blocking part

[0166] 569H: Round hole

[0167] 569I: Second additional cable hole

[0168] 570: Cable drum assembly

[0169] 599A: Plate through hole

[0170] 599B: protrusion

[0171] 599C: Cylindrical part

[0172] 599D: Connection structure

[0173] 599E: First limit stop surface

[0174] 599F: First connector

[0175] 599G: Second limit stop

[0176] 599H: Second limit stop surface

[0177] 599I: First outer surface

[0178] 599J: Function slot

[0179] 599L: Side wall of the plate through hole

[0180] 599M: Blocking surface

[0181] 599X: First end of cylindrical part

[0182] 599Y: Second end of cylindrical part

[0183] P3: Central axis of cooking container

[0184] P8: Center axis of the coiling rack

[0185] P9: Geometric center axis

[0186] PA: Center axis of the cable drum assembly DETAILED DESCRIPTION

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] The present application provides a wire reel device for an electromagnetic heating cooking utensil and an electromagnetic heating cooking utensil using the wire reel device.

[0192] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0193] like Figure 1 As shown, in a specific embodiment, the electromagnetic heating cooking utensil 500 (referred to as cooking utensil 500) according to the present application includes a cover 10 and a pot body 20. A heating device and a cooking container 30 (such as 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.

[0194] 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 560 and a circuit board assembly 22. Figure 2 As shown, the wire reel device 560 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 supply power to 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 560 is arranged in the accommodating cavity 21 (for example, the bottom of the accommodating cavity 21), and the cooking container 30 is detachably arranged in the magnetically inductive area of ​​the wire reel device 560, 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.

[0195] like Figure 2 and Figure 3As shown, the wire reel device 560 includes a wire reel assembly 570, so that the cooking container 30 and the wire reel assembly 570 are detachably arranged at least above the wire reel assembly 570. The wire reel assembly 570 has a wire reel assembly central axis PA, and the wire reel assembly 570 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 570. When the cooking container 30 is located at least above the wire reel assembly 570 (or the wire reel device 560), 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 500 is configured so that when the cooking container 30 is located at least above the wire reel assembly 570 (or the wire reel device 560), at least a portion of the wire reel assembly 570 is rotatable relative to the cooking container 30 around the wire reel assembly central axis PA. The driving device 50 is connected to at least the portion of the wire reel assembly 570 and is used to drive at least the portion of the wire reel assembly 570 to rotate relative to the cooking container 30 around the wire reel assembly central axis PA.

[0196] 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°.

[0197] 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 500 .

[0198] In an embodiment not shown in the present application, the wire reel device 560 is used to be arranged on the side of the cooking container 30 (for example, the wire reel device 560 is configured to include a sleeve that can be sleeved on the outer circumference of the cooking container 30). Alternatively, the wire reel device 560 can also be arranged on the cover 10 (the cover 10 includes a receiving cavity for accommodating the wire reel device 560), 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 560. That is, in the present application, the cooking container 30 and the wire reel device 560 are detachably arranged on one side of the magnetically induced area of ​​the wire reel device 560 (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.

[0199] According to the present application, when at least a portion of the wire reel assembly 570 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 on the cooking container 30, for example, moves along the circumferential direction of the cooking container 30, thereby solving the problem of fixed heating position in the background technology.

[0200] The central axis PA of the wire drum assembly is also the central axis of the wire drum device 560. The axial direction of the wire drum assembly 570 is also the axial direction of the wire drum device 560. The circumferential direction of the wire drum assembly 570 is also the circumferential direction of the wire drum device 560.

[0201] 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 .

[0202] The wire reel assembly 570 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).

[0203] 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 570 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. For example, 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 drum rack 380 has a wire drum rack central axis P8, and the wire drum rack central axis P8 coincides or substantially coincides with the central axis PA of the wire drum assembly. The wire coil rack 380 is made of non-metallic material (such as resin, plastic, etc.) so as to have no effect on the magnetic field of the coiled wire 382 .

[0204] The axial direction of the wire coiling rack 380 is also the axial direction of the wire coiling device 560. The circumferential direction of the wire coiling rack 380 is also the circumferential direction of the wire coiling device 560.

[0205] The turntable 490 includes a turntable body 493, and the turntable body 493 includes a geometric center axis P9, which coincides or substantially coincides with the center axis PA of the wire drum assembly. The turntable body 493 is connected to the support member 162, and is spaced from the wire drum frame 380 along the axial direction of the wire drum assembly 570, and is spaced from the coiled wire 382. The turntable body 493 is configured to be rotatable relative to the wire drum frame 380 around the center axis PA of the wire drum assembly, and is rotatable relative to the coiled wire 382. The turntable body 493 is alternately divided into a first area 491 and a second area 492 along the circumferential direction of the wire drum assembly 570, 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 turntable body 493 along the circumferential direction of the wire drum assembly 570. Among them, the first region 491 includes a material different from the disk body 493, and the second region 492 is entirely made of the material of the disk body 493, so that the alternating magnetic field generated by the disk winding 382 has a magnetic field strength in the first region 491 that is different from that in the second region 492, thereby forming an alternating magnetic field that is unevenly distributed in the circumferential direction of the wire disk assembly 570.

[0206] 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 570. Preferably, the first regions 491 are equally spaced apart on the disc body 493 along the circumferential direction of the wire disc assembly 570. The second regions 492 are also spaced apart on the disc body 493 along the circumferential direction of the wire disc assembly 570. Preferably, the second regions 492 are equally spaced apart on the disc body 493 along the circumferential direction of the wire disc assembly 570.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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 570, and the plurality of second regions 492 are evenly spaced along the circumferential direction of the wire reel assembly 570. For example, the wire reel assembly 570 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 570, the N strong magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 570, and the N weak magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 570. Preferably, the cooking appliance 500 may be configured such that when the cooking container 30 is located at least above the wire reel assembly 570, at least a portion of the wire reel assembly 570 (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.

[0211] 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.

[0212] 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.

[0213] The axial direction of the turntable 490 is also the axial direction of the wire spool device 560, which is also the axial direction of the disc body 493. The circumferential direction of the turntable 490 is also the circumferential direction of the wire spool device 560, which is also the circumferential direction of the disc body 493.

[0214] The wire spool holder 380 extends generally parallel to the disc body 493, so that the turntable 490 can act better on the magnetic field generated by the disc-shaped winding 382. Preferably, both the wire spool holder 380 and the disc body 493 have a substantially symmetric structure, such as a radially symmetric structure, which is convenient for processing and more compatible with the cooking container 30 that is also radially symmetric. Preferably, the axial cross-sections of the wire spool holder 380 and the disc body 493 are both C-shaped structures, so that the disc-shaped winding 382 can surround the side wall of the cooking container 30. In the present application, the wire spool holder 380 is used to be arranged inside the C-shaped structure of the disc body 493, that is, the wire spool holder 380 is used to be used at least above the disc body 493 along the height direction of the cooking appliance 500. The disc-shaped winding 382 is arranged outside the C-shaped structure of the wire spool holder 380, that is, on the side of the wire spool holder 380 facing the disc body 493. In the working state (in the assembled state of the wire spool device 560), the distance between the magnetic line converging member 495 and the disc-shaped winding 382 is 1 mm to 15 mm, that is, the gap between the magnetic line converging member 495 and the disc-shaped winding 382 is 1 mm to 15 mm.

[0215] Preferably, the shape of the magnetic line converging member 495 conforms to the shape of the disc body 493.

[0216] The support member 162 is generally cylindrical, for example. The support member 162 includes a support member first end 163 and a support member second end 164 arranged in opposite directions along the axial direction of the wire spool assembly 570. In the working state, the support member first end 163 is located above the support member second end 164. The wire spool holder 380 is connected to the support member first end 163, and the disc body 493 is connected to the support member second end 164. The wire spool device 560 is configured such that the disc body 493 is rotatable relative to the support member second end 164 about the central axis PA of the wire spool assembly, and thus rotatable relative to the wire spool holder 380. Preferably, the support member 162 and the wire spool holder 380 are integrally formed, such as integrally injection molded, that is, the support member 162 and the wire spool holder 380 can be combined into one component.

[0217] Specifically, a disk body through hole 599A extending in the axial direction of the disk body 493 is provided at the central part or approximately the central part of the disk body 493, and the support member 162 is provided in the disk body through hole 599A. For example, a cylindrical portion 599C extending in the axial direction of the disk body 493 is provided at the central part or approximately the central part of the disk body 493, the internal through hole of the cylindrical portion 599C is the disk body through hole 599A, and the solid part of the cylindrical portion 599C is the side wall 599L of the disk body through hole 599A. The cylindrical portion 599C has a cylindrical portion first end 599X and a cylindrical portion second end 599Y which are arranged oppositely in the axial direction of the disk body 493, and in the working state, the cylindrical portion first end 599X is located above the cylindrical portion second end 599Y. The first end 599X of the cylindrical portion is connected to the central part of the disc body 493, and the second end 599Y of the cylindrical portion extends in a direction away from the disc body 493, that is, away from the disc body 493. The second end 599Y of the cylindrical portion is, for example, located outside the C-shaped structure of the disc body 493. The central axis of the cylindrical portion 599C coincides with the central axis PA of the cable drum assembly.

[0218] 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 disk body through hole side wall 599L is connected to the outer peripheral surface of the second end 164 of the support member through the swivel substructure 161. The disk body through hole side wall 599L 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 as a rolling bearing or a sliding sleeve, for example. 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 .

[0219] 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.

[0220] 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.

[0221] 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 1 ), so that the wire reel 380 is supported by the pot body 20. The swivel substructure 161 is stably supported by the supporting member 161 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.

[0222] like Figure 2 As shown, the support member 161 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 161 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 .

[0223] 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.

[0224] like Figure 2 As shown, the wire coil rack 380 is located at the periphery of the first end portion 163 of the support, and the coiled wire 382 is coiled around the central axis PA of the wire coil assembly on the surface of the wire coil rack 380 on the side facing the second end portion 164 of the support. The coiled wire 382 is not disposed on the side of the wire coil 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 and can rotate around the support 162. The coiled wire 382 is clamped between the wire coil rack 380 and the turntable 490. The coiled wire 382 is formed by, for example, coiling an enameled wire 389B. The wire diameter of the enameled wire 389B is, for example, 2 mm to 2.5 mm. In order to better connect the enameled wire 389B to the circuit board assembly 22, as shown in FIG. Figure 4 As 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.

[0225] like Figure 1 and Figure 2As 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.

[0226] 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 50r / 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. Of course, the motor output shaft 59 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 560.

[0227] 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 5 As shown, preferably, the cooking appliance 500 further includes a magnetic shield 52, which is made of metal material and is used to cover at least part of the driving 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 driving 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 500 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 500, 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.

[0228] The transmission assembly 55 at least includes 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 simultaneously connected to the first transmission wheel 57. The transmission assembly 55 is configured 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 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 55 is made of non-metallic materials. For example, the first transmission wheel 57 and the second transmission wheel 58 are made of plastic or resin.

[0229] 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. Figure 6 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.

[0230] 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.

[0231] like Figure 5 As shown, the inner circumferential surface of the second transmission wheel 58 is provided with at least one second connecting body 58F. Figure 6 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.

[0232] 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 in 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 in 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 second transmission wheel 58, and the limiting groove 599F is used to accommodate the convex rib 58F.

[0233] 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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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 .

[0239] In the illustrated embodiment, the cooking utensil 500 is an electric rice cooker. Based on the wire reel device 560 of the present application, the cooking utensil 500 may also be an electric pressure cooker, an electric stew pot, an electric hot pot, an electric frying pan or an electric frying pan. Alternatively, the cooking utensil 500 may also be an electromagnetic heating cooking utensil similar to the above-mentioned electromagnetic heating cooking utensil.

[0240] 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 disc body 490 remains stationary relative to the pot body 20. For example, the outer peripheral edge of the disc 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-shaped winding 382.

[0241] 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.

[0242] 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.

[0243] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other 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.

[0244] 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.

[0245] 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 wire reel device for electromagnetic heating cooking utensils, It is characterized in that include: Supports; and A wire drum assembly is arranged on the support member, the wire drum assembly has a central axis of the wire drum assembly, and the wire drum assembly comprises: A coiled wire is arranged on the coil assembly, the coiled wire 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, and the coiled wire is arranged around the central axis of the coil assembly, and A turntable, the turntable comprising: a disc body connected to the support, the disc body being configured to be rotatable relative to the disc-shaped winding wire about a central axis of the wire disc assembly, and At least one first area and at least one second area are arranged on the turntable, and the first area and the second area are alternately arranged on the disk body along the circumferential direction of the wire disk assembly. The first area includes a material different from that of the disk body, so that the magnetic field strength of the alternating magnetic field at the first area is different from the magnetic field strength at the second area.

2. The cable drum device according to claim 1, It is characterized in that A magnetic field line gathering member is provided at the first area; The cable drum assembly further comprises a cable drum frame connected to the support member, the cable drum frame being ... The reel body is configured to be rotatable relative to the reel frame around a central axis of the reel assembly.

3. The wire drum device according to claim 2, It is characterized in that The coiled wire is coiled around the central axis of the wire reel assembly on a surface of the wire reel frame on a side facing the reel body.

4. The wire drum device according to claim 2, It is characterized in that The support member includes a first end portion and a second end portion of the support member which are arranged oppositely along the axial direction of the wire drum assembly, the wire drum rack is connected to the first end portion of the support member, the drum body is connected to the second end portion of the support member, and the wire drum device is constructed so that the drum body can rotate relative to the second end portion of the support member around the central axis of the wire drum assembly.

5. The cable drum device according to claim 4, It is characterized in that A disc through hole extending in the axial direction of the wire disc assembly is provided in the central portion of the disc body, and the support member is adapted to the disc through hole so that the disc body can rotate around the central axis of the wire disc assembly relative to the second end of the support member.

6. The cable drum device according to claim 5, It is characterized in that The support member is arranged in the through hole of the disc body, The wire drum device further comprises a rotary auxiliary structure, through which the through hole of the drum body and the second end of the support member are connected, wherein the axis of the rotary auxiliary structure coincides with the central axis of the wire drum assembly.

7. The cable drum device according to claim 6, It is characterized in that The wire drum device further comprises a second blocking member, which is disposed at the second end of the support member, and the second blocking member comprises a second blocking portion extending outwardly in the radial direction of the wire drum assembly. The outer peripheral surface of the support member includes a blocking surface extending in the radial direction of the wire drum assembly toward the side wall of the disk body through hole, The wire drum device is configured such that the rotary auxiliary structure is constrained between the blocking surface and the second blocking portion along the axial direction of the wire drum assembly.

8. The cable drum device according to claim 7, It is characterized in that The inner peripheral surface of the disk body through hole is provided with a protrusion extending toward the support member along the radial direction of the wire disk assembly, and the protrusion contacts a side of the rotary auxiliary structure facing the first end of the support member.

9. The cable drum device according to claim 7, It is characterized in that The support member includes a accommodating space that passes through the support member along the axial direction of the wire drum assembly, and the second blocking member also includes a second connecting portion connected to the second blocking portion, and the second connecting portion extends inward from the second blocking portion along the radial direction of the wire drum assembly to form at least a portion of the outer wall of the accommodating space.

10. The cable drum device according to claim 9, It is characterized in that The wire coiling rack is located at the outer periphery of the first end of the support member, and the coiled wire is wound around the central axis of the wire coil assembly on the surface of the wire coiling rack on the side facing the second end of the support member. The side wall of the accommodating space located at the first end of the supporting member is provided with a first additional wire passing hole, and the second blocking member is provided with a second additional wire passing hole. The coil-wound wire passes through the first additional wire-passing hole into the accommodating space, and then passes through the second additional wire-passing hole out of the accommodating space.

11. The cable drum device according to claim 5, It is characterized in that A cylindrical portion extending along the axial direction of the wire drum assembly is provided in the central portion of the disk body, the disk body through hole is formed inside the cylindrical portion, 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 central axis of the wire drum assembly, 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 central axis of the wire drum assembly relative to the support.

12. The cable drum device according to claim 11, It is characterized in that The driving device includes a second transmission wheel, which is an annular structure and is used to be sleeved on the outer periphery of the cylindrical portion. The connecting structure is used to connect the second 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 second transmission wheel from moving toward the disk body along the axial direction of the cylindrical portion.

13. The cable drum device according to claim 12, It is characterized in that At least one second connecting body is provided on the inner circumferential surface of the second 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 second 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 second transmission wheel from rotating relative to the cylindrical portion.

14. The cable drum device according to claim 13, It is characterized in that The second connecting body is a limiting groove provided on the inner circumferential surface of the second transmission wheel, the limiting groove extends along the axial direction of the second transmission wheel, and the first connecting body is a convex rib provided on the outer circumferential 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 second 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 cable drum device according to claim 12, It is characterized in that The connecting structure also includes at least one second limit stop member, which is arranged on the outer circumferential 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 circumferential 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 cable drum device according to claim 15, It is characterized in that The second limit stopper has a first outer surface located on a side facing away from the axis of 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 cable drum device according to claim 6, It is characterized in that The rotary auxiliary structure is configured as a rolling bearing or a sliding sleeve; and / or The rotary auxiliary structure is made of non-metallic material.

18. The cable drum device according to claim 2, It is characterized in that The axial cross-sections of the cable reel and the reel body are both C-shaped structures.

19. The cable drum device according to claim 18, It is characterized in that The coiled wire is arranged outside the C-shaped structure of the coiling rack; and / or The wire coiling rack is arranged on the inner side of the C-shaped structure of the coil body.

20. The cable drum device according to claim 2, It is characterized in that The support member is integrally formed with the cable coiling rack.

21. The cable drum device according to claim 1, It is characterized in that The second area is provided with at least one heat dissipation hole.

22. The wire drum device according to any one of claims 1 to 21, It is characterized in that The disk body is made of a first material, the first region is provided with at least one magnetic line of force gathering member, and the magnetic line of force gathering member comprises a second material different from the first material.

23. The cable drum device according to claim 22, It is 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.

24. The cable drum device according to claim 22, It is 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.

25. The cable drum device according to claim 22, It is 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.

26. The cable drum device according to claim 22, It is characterized in that The distance between the magnetic field line gathering member and the disc winding is 1 mm to 15 mm; and / or The thickness of the magnetic line gathering member is 2 mm to 10 mm.

27. An electromagnetic heating cooking appliance, It is characterized in that include: Receiving cavity; The wire reel device according to any one of claims 1 to 26, wherein the wire reel device is located in the accommodating cavity, wherein the wire reel frame is connected to a cavity wall of the accommodating cavity; A cooking container for holding food, the cooking container comprising a ferromagnetic material, the cooking container being detachably arranged on one side of the wire reel device; and A driving device is connected to the disc body and is used to drive the disc body to rotate relative to the disc-shaped winding around the central axis of the wire disc assembly.

28. The electromagnetic heating cooking device according to claim 27, It is characterized in that The driving device comprises: a drive assembly for providing a driving force for rotating the disc body relative to the disc-shaped winding; 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.

29. The electromagnetic heating cooking device according to claim 28, It is 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 component, and the other end of which is connected to the grounding terminal of the electromagnetic heating cooking appliance.

30. The electromagnetic heating cooking device according to claim 28, It is characterized in that The transmission component is made of non-metallic material.

31. The electromagnetic heating cooking device according to claim 27, It is 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.

32. The electromagnetic heating cooking device according to claim 31, It is 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.

33. The electromagnetic heating cooking device according to claim 27, It is characterized in that The cooking container is used to be detachably arranged at least above the wire reel device, so that the central axis of the cooking container and the central axis of the wire reel assembly extend along the height direction of the electromagnetic heating cooking appliance.

34. The electromagnetic heating cooking device according to any one of claims 27 to 33, It is characterized in that The electromagnetic heating cooking utensil is one of an electric rice cooker, an electric stew pot, an electric pressure cooker, an electric hot pot, an electric frying pan and an electric frying pan, or a similar utensil to the one of the utensil.

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