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 is used for the electromagnetic heating cooking utensil and 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 wire winding frame and at least one disc-shaped winding wire. The wire coiling frame is connected to the supporting piece and can rotate around the central axis of the wire coil assembly. The disc-shaped winding wires are arranged on the coil holder at intervals in the circumferential direction of the coil holder and used for forming a resonant inductor of an electromagnetic heating resonant circuit so as to generate an alternating magnetic field needed by electromagnetic heating after being powered on. The disc-shaped winding wire is wound around the winding center, and the winding center deviates from the central axis of the wire winding frame. According to the wire coil device, the wire coil device can provide the magnetic field which is non-uniformly distributed in the circumferential direction, and the magnetic field can rotate, so that the cooking container can be rotationally heated, and the cooking container is heated more uniformly.

Description

Technical Field

[0001] The present application relates to the technical field of cooking appliances, and in particular to a wire reel device and an electromagnetic heating cooking appliance having the same. Background Art

[0002] In order to improve the cooking effect of rice cookers, some rice cookers use vacuum to improve the freshness of rice, and some use air to prevent overflow to achieve fast cooking, both of which bring consumers a good cooking experience. However, the functions achieved by vacuum or air blowing are relatively single, and the single means used in the above-mentioned prior art have limited effect on improving the rice effect.

[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 connected to the support member, the wire drum assembly has a wire drum assembly central axis, and the wire drum assembly includes:

[0008] a wire drum rack connected to the support member and rotatable about the central axis of the wire drum assembly, and

[0009] At least one disc-shaped winding is arranged on the coil frame at intervals along the circumferential direction of the coil frame, the disc-shaped winding is used to constitute a resonant inductor of an electromagnetic heating resonant circuit to generate an alternating magnetic field required for electromagnetic heating after power is turned on, and the disc-shaped winding is coiled around a winding center, and the winding center is offset from the central axis of the coil frame.

[0010] According to the present application, by making the coil rack rotatable, the coil rack can drive the coiled wire disposed thereon to rotate, and then the cooking utensil including the coil rack can achieve the effect of multi-point heat source rotation heating; at the same time, the convection heating form of the cooking utensil will also change, so that the processed food is heated more evenly, and then a better cooking effect is achieved. The spacing between the coiled wires can avoid electromagnetic self-interference between the coiled wires, as well as problems such as high back pressure, low inductance, low heating power, large storage current, and messy heating waveform.

[0011] Optionally, a wire coil through hole extending in the axial direction of the wire coil is provided at the central portion of the wire coil, and the support member is adapted to the wire coil through hole, so that the wire coil can rotate around the central axis of the wire coil assembly relative to the support member.

[0012] Furthermore, the wire drum through hole is connected to the support member via a rotary auxiliary structure, wherein the axis of the rotary auxiliary structure coincides with the central axis of the wire drum assembly.

[0013] According to the present application, the swivel substructure can enable the cable drum to stably rotate around the support member.

[0014] It may further be possible to form an annular groove on the outer periphery of the support member for accommodating the rotary auxiliary structure.

[0015] According to the present application, the card slot can prevent the cable drum rack from moving.

[0016] Optionally, a cylindrical portion is provided in the central portion of the wire reel rack, the wire reel through hole is formed inside the cylindrical portion, and a connecting structure for connecting a driving device is provided at the cylindrical portion, wherein the driving device is used to drive the wire reel rack to rotate around the central axis of the wire reel assembly relative to the support member.

[0017] According to the present application, a cylindrical portion is provided at the central portion of the wire reel, a wire reel through hole is provided in the cylindrical portion, and a connecting structure for connecting a driving device is provided on the outer peripheral surface of the cylindrical portion. The installation between the wire reel and the support member and the transmission between the wire reel and the driving device can be achieved only by providing the cylindrical portion, and the wire reel has the advantages of simple structure and easy assembly.

[0018] Optionally, the first end of the cylindrical portion is connected to the central portion of the cable reel, the second end of the cylindrical portion extends in a direction away from the cable reel, and the central axis of the cylindrical portion coincides with the central axis of the cable reel.

[0019] Further, a second transmission wheel may be integrally formed or connected to the connection structure, the second transmission wheel is connected to the cylindrical portion, and the axis of the second transmission wheel coincides with the central axis of the cylindrical portion; or

[0020] The driving device includes a second transmission wheel, and the connecting structure is used to connect the second transmission wheel. When the second transmission wheel is connected to the connecting structure, the axis of the second transmission wheel coincides with the central axis of the cylindrical portion.

[0021] According to the present application, the connection structure of the cylindrical portion can be flexibly arranged.

[0022] Optionally, the driving device includes a second transmission wheel, which is an annular structure and is used to be sleeved on the outer circumference of the cylindrical portion. The connecting structure is used to connect the second transmission wheel. The connecting structure includes a first limit stop surface, which extends outward from the outer circumferential 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 wire coil rack along the axial direction of the cylindrical portion.

[0023] According to the present application, by making the connection structure include a first limit stop surface, the second transmission wheel can be axially limited to prevent the second transmission wheel from moving toward the cable drum.

[0024] Optionally, 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 provided corresponding to the second connecting body and connected to 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;

[0025] When the second transmission wheel is installed at a set position, the first connecting body is engaged with the second connecting body to limit the second transmission wheel from rotating relative to the connecting structure.

[0026] According to the present application, the second transmission wheel drives the first connecting body through the second connecting body, thereby driving the cylindrical portion to rotate.

[0027] Furthermore, the connection structure may include a plurality of the first connection bodies arranged at intervals along the circumferential direction of the cylindrical portion.

[0028] According to the present application, by making the connection structure include a plurality of connection bodies spaced circumferentially, the second transmission wheel and the connection structure can be connected at multiple points in the circumferential direction to reduce the local stress of the second transmission wheel during transmission.

[0029] Further, the second connecting body can be a limiting groove arranged on the inner circumferential surface of the second transmission wheel, and the limiting groove extends along the axial direction of the second transmission wheel, and the first connecting body is a convex rib arranged on the outer circumferential surface of the cylindrical portion, and the limiting groove is used to accommodate the convex rib; or, selectively, the second connecting body can be a convex rib arranged on the inner circumferential surface of the second transmission wheel, and the first connecting body can be a limiting groove arranged on the outer circumferential surface of the cylindrical portion, and the limiting groove extends along the axial direction of the cylindrical portion, and the limiting groove is used to accommodate the convex rib.

[0030] According to the present application, by providing the convex ribs and the limiting grooves, the second transmission wheel can be quickly fixed to the cylindrical portion, which can effectively improve the assembly efficiency of the second transmission wheel. In addition, under the action of the convex ribs and the limiting grooves, the second transmission wheel can also drive the cable drum to rotate during the rotation process.

[0031] Optionally, the connecting structure also includes at least one limiting guide structure, which is arranged on the outer peripheral surface of the cylindrical portion, and the side of the limiting guide structure facing the first end of the cylindrical portion includes a second limiting stop surface, and the second limiting stop surface extends outward from the outer peripheral surface of the cylindrical portion along the radial direction of the cylindrical portion, and the second limiting stop surface is closer to the second end of the cylindrical portion than the first limiting stop surface.

[0032] According to the present application, by setting a limit guide structure and setting a second limit stop surface on the limit guide structure, the second transmission wheel is limited to a set installation position under the joint action of the first limit stop surface and the second limit stop surface, which can effectively prevent the second transmission wheel from axial movement.

[0033] Optionally, the limiting guide structure has a guiding bevel located on the side facing away from the cylindrical portion, and the guiding bevel is configured to be inclined relative to the axis of the cylindrical portion so that the distance between one end of the guiding bevel facing the second end of the cylindrical portion and the axis of the cylindrical portion is smaller than the distance between one end of the guiding bevel facing the first end of the cylindrical portion and the axis of the cylindrical portion, and the portions of the cylindrical portion located on both sides of the limiting guide structure along the circumferential direction of the cylindrical portion are configured to be functional grooves extending along the axial direction of the cylindrical portion, and the functional grooves pass through the side wall of the cylindrical portion.

[0034] According to the present application, by providing multiple limiting guide structures and providing guiding slopes on the limiting guide structures, the installation of the second transmission wheel can be guided at multiple points, which is helpful for the rapid assembly of the second transmission wheel. In addition, by providing functional grooves that penetrate the two sides of the cylindrical portion on both sides of the limiting guide structure, when the second transmission wheel is installed, the limiting guide structure will be displaced toward the center of the cylindrical portion, making it easier for the second transmission wheel to be installed at the set installation position.

[0035] Optionally, the connection structure includes a plurality of the position limiting guide structures, and the plurality of position limiting guide structures are arranged at intervals along the circumferential direction of the cylindrical portion.

[0036] According to the present application, by arranging a plurality of limiting guide structures at intervals in the circumferential direction of the cylindrical portion, a limiting effect can be exerted on a plurality of positions of the second transmission wheel in the circumferential direction, thereby more reliably restricting the second transmission wheel to a set installation position.

[0037] Optionally, the coiled wire is arranged on a side of the wire coiling rack facing the second end of the cylindrical portion.

[0038] According to the present application, by arranging the coiled wire on one side of the coiling frame facing the second end of the cylindrical portion, the coiled wire can be hidden under the coiling frame to avoid problems such as unsightly appearance caused by the exposed coiled wire.

[0039] Optionally, the wire drum assembly further comprises a wire drum support, the coiled wire is wound around the wire drum support, and the wire drum support is connected to a side of the wire drum frame facing the second end of the cylindrical portion.

[0040] According to the present application, by providing a wire coil support, the coiled wire can be better fixed on the wire coil rack.

[0041] Optionally, the coiled winding is formed by winding an enameled wire, and the enameled wire comprises:

[0042] a coiled portion, wound on the coil support, forming an effective resonant inductance of the electromagnetic heating resonant circuit, and

[0043] two terminal portions, wherein the terminal portions are portions of the enameled wire that are not used to form the effective resonant inductor, and the coiled portion is located between the two terminal portions;

[0044] The cylindrical portion is provided with a bunching piece for gathering all the terminal portions.

[0045] According to the present application, by arranging a bunching piece on the cylindrical portion, the bunching piece can better constrain the end portion of the enameled wire, thereby preventing the end portion of the enameled wire from becoming entangled, hooked, or other problems during the rotation of the wire reel.

[0046] 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 reel, the first end portion of the support member corresponds to the first end of the cylindrical portion, and the second end portion of the support member corresponds to the second end of the cylindrical portion, so that the wire reel device also includes a first blocking member, which is arranged at the first end portion of the support member, and the first blocking member includes a first blocking portion extending outward in the radial direction of the wire reel assembly to block the wire reel from moving along the axial direction of the wire reel assembly toward a direction away from the second end portion of the support member.

[0047] According to the present application, by making the cable drum device further include a first blocking member, the first blocking portion provided on the first blocking member can block the cable drum frame to prevent the cable drum frame from moving along the axial direction of the cable drum assembly.

[0048] Optionally, the first blocking member further includes a first connecting portion, the first connecting portion is connected to the first blocking member, and the first connecting portion is used to connect the first end portion of the supporting member.

[0049] Further, the first connecting portion may be configured as a sleeve extending along the axial direction of the cable drum assembly, and the sleeve is sleeved on the outer periphery of the first end portion of the support member.

[0050] According to the present application, the first connecting portion is constructed as a sleeve extending along the axial direction of the cable drum assembly and connected to the support member by sleeve connection, which not only has a simple structure but also is easy to install.

[0051] Optionally, the inner circumferential surface of the wire drum through hole has a blocking surface extending toward the cylindrical portion along the radial direction of the wire drum through hole, and the blocking surface is used to contact the side of the rotary auxiliary structure facing the first end of the support member.

[0052] According to the present application, by providing a blocking surface in the through hole of the wire drum, the blocking surface can be used to connect with the rotary sub-structure, and at the same time, the rotary sub-structure can be prevented from shifting in the axial direction.

[0053] Optionally, the support member comprises:

[0054] a first support member; and

[0055] a second support member connected to the first support member,

[0056] Among them, the end of the first support member used for connecting to the second support member has a first outer diameter, the end of the second support member used for connecting to the first support member has a second outer diameter, the end of the second support member away from the first support member has a third outer diameter, the first outer diameter is greater than the second outer diameter, the third outer diameter is greater than the second outer diameter, and the rotary sub-structure is arranged on the part of the second support member having the second outer diameter.

[0057] According to the present application, by making the second support member have the second outer diameter and the third outer diameter, making the first support member have the first outer diameter, and further making the first outer diameter and the third outer diameter both larger than the second outer diameter, under the action of the first support member and the second support member, the swivel sub-structure can be limited on the second support member, and the swivel sub-structure can be prevented from moving in the axial direction of the support member. In addition, by making the support member include the first support member and the second support member, the first support member and the second support member are separately arranged, which facilitates the installation and positioning of the swivel sub-structure.

[0058] Optionally, the rotary auxiliary structure is configured as a rolling bearing or a sliding bushing; and / or the rotary auxiliary structure is selectively made of a non-metallic material.

[0059] According to the present application, the rotary auxiliary structure is made of non-metallic material, thereby avoiding electromagnetic interference.

[0060] Optionally, the wire reel assembly includes a plurality of the coiled wires, and the plurality of the coiled wires are arranged on the wire reel at equal intervals along a circumferential direction of the wire reel.

[0061] According to the present application, the wire reel assembly includes a plurality of coiled wires, and by making the wire reel assembly rotatable relative to the cooking container, the effect of multi-point heat source rotation heating of the electromagnetic heating cooking utensil can be achieved. At the same time, complex and changeable convection tumbling forms and tumbling effects can be achieved inside the cooking container, so that the food is heated more evenly, so as to achieve a better cooking effect, thereby improving the user experience.

[0062] Optionally, the axial cross-section of the cable drum is a C-shaped structure.

[0063] It is further possible that the coiled wire is arranged outside the C-shaped structure; and / or the coiling rack has a radially symmetrical structure.

[0064] According to the present application, by making the axial cross-section of the wire coil rack a C-shaped structure, the relative area between the wire coil rack and the cooking container can be increased, thereby increasing the area of ​​the heating area of ​​the cooking container by the wire coil assembly.

[0065] A second aspect of the present application provides an electromagnetic heating cooking appliance, comprising:

[0066] The wire drum device according to any one of the solutions of the first aspect above;

[0067] A cooking container for holding food, the cooking container and the wire coiling rack being detachably arranged on one side of the wire coiling rack, the cooking container comprising a ferromagnetic material;

[0068] A driving device is connected to the wire coiling frame and is used to drive the wire coiling frame to rotate around the central axis of the wire coil assembly.

[0069] According to the present application, by making the wire reel assembly rotatable relative to the cooking container, the effect of rotating heating of the electromagnetic heating cooking utensil heat source can be achieved, and at the same time, complex and changeable convection tumbling forms and tumbling effects can be achieved inside the cooking container, so that the food is heated more evenly, so as to achieve a better cooking effect, thereby improving the user experience. When the wire reel assembly includes multiple coiled wires, the effect of rotating heating of multiple heat sources of the electromagnetic heating cooking utensil can also be achieved, thereby achieving a better heating effect.

[0070] Optionally, the driving device comprises:

[0071] A drive assembly for providing a driving force to rotate the cable drum; and

[0072] The transmission assembly is connected between the driving assembly and the wire coiling frame and is used to transmit the driving force to the wire coiling frame.

[0073] Further, the driving component can be configured as a motor; and / or, the electromagnetic heating cooking appliance also includes a grounding wire, one end of which is connected to the housing of the driving component, and the other end of the grounding wire is connected to the grounding terminal of the electromagnetic heating cooking appliance.

[0074] According to the present application, the drive assembly is configured as a motor, and the cable drum can be driven by controlling the motor. The connecting wires can help the drive assembly resist electromagnetic interference.

[0075] Optionally, the transmission assembly is made of non-metallic material.

[0076] According to the present application, the transmission component is made of non-metallic material, which can also prevent the transmission component from being affected by electromagnetic interference and affecting its normal operation.

[0077] 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.

[0078] According to the present application, under the action of the magnetic shield, the magnetic field generated by the disc winding can be isolated to prevent the drive device from being subjected to electromagnetic interference, thereby ensuring that the drive device can work normally according to the set requirements.

[0079] Optionally, 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 ground terminal of the electromagnetic heating cooking appliance.

[0080] According to the present application, the grounding wire included in the electromagnetic heating cooking appliance can further improve the performance of anti-electromagnetic interference.

[0081] Optionally, the electromagnetic heating cooking appliance is an electric rice cooker, which also includes a cooker body, the cooker body is provided with a accommodating cavity, wherein the wire reel device is arranged in the accommodating cavity, and the cooking container can be removably placed in the accommodating cavity, and when the cooking container is located in the accommodating cavity, the wire reel assembly is located at least below the cooking container.

[0082] According to the present application, the electromagnetic heating cooking appliance may be an electric rice cooker. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] 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.

[0084] In the attached figure:

[0085] Figure 1 is a cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a specific embodiment of the present application;

[0086] Figure 2 for Figure 1 The schematic diagram of the internal structure of the electromagnetic heating cooking appliance shown in the figure shows a wire reel assembly, a wiring assembly, a circuit board assembly and a driving device;

[0087] Figure 3 for Figure 1 A schematic diagram of some components of an electromagnetic heating cooking device shown, wherein a driving device and a wire drum device are shown;

[0088] Figure 4 for Figure 1 An exploded schematic diagram of some components of the electromagnetic heating cooking device shown, wherein a driving device is shown;

[0089] Figure 5 for Figure 1 A schematic side cross-sectional view of some components of the electromagnetic heating cooking device shown;

[0090] Figure 6 for Figure 5 A partial magnified view of the structure at A in the middle;

[0091] Figure 7 for Figure 5 A partial magnified view of the structure at B in the middle;

[0092] Figure 8 for Figure 3 A schematic diagram of a cable drum is shown;

[0093] Fig. 9 for Figure 8 A partial magnified view of the structure at C in the middle;

[0094] Fig.10 Figure 1 A schematic diagram of some components of an electromagnetic heating cooking appliance shown, wherein a wire tray assembly, a wiring assembly and a circuit board assembly are shown;

[0095] Fig.11a and Fig.11b for Fig.10 a bottom view of the components shown;

[0096] Fig.12 for Fig. 9 A partial magnified view of the structure at D in the middle;

[0097] Fig.13 for Figure 1 A schematic diagram of some components of the electromagnetic heating cooking appliance mounted on a base is shown;

[0098] Fig.14 for Fig.10 A bottom view of the components shown, wherein the cable drum assembly is compared to Fig.11b The position in is rotated clockwise by an angle;

[0099] Fig.15 for Fig.10 A bottom view of the components shown, wherein the cable drum assembly is compared to Fig.11b The position in is rotated counterclockwise by an angle;

[0100] Fig.16 is a schematic diagram of a wire drum assembly according to a specific embodiment of the present application;

[0101] Fig.17 for Fig.16 A schematic diagram of some parts of the cable drum assembly shown, wherein the magnetic conductive member support and the coiled wire are omitted;

[0102] Fig.18 for Fig.17 A partial magnified view of the structure at E in the middle;

[0103] Fig.19 for Fig.16 A schematic side cross-sectional view of the wire drum assembly shown;

[0104] Fig. 20 for Fig.19 A partial magnified view of the structure at F in the middle;

[0105] Fig.21 for Fig.16 A schematic diagram of a magnetic conductive member bracket shown in FIG.

[0106] Fig. 22 for Fig.21 A partial magnified view of the structure at G in the middle.

[0107] Description of reference numerals:

[0108] 10: Cover

[0109] 20: Claypot

[0110] 21: Accommodation cavity

[0111] 22: Circuit board assembly

[0112] 23A: First terminal

[0113] 23B: Second terminal

[0114] 24A: First power supply line

[0115] 24B: Second power supply line

[0116] 26: Base

[0117] 26D: Depression

[0118] 27: Power socket

[0119] 30: Cooking Container

[0120] 31: Cooking Space

[0121] 40: Temperature sensor assembly

[0122] 41: Spring

[0123] 42: Cable

[0124] 50: Drive device

[0125] 51: Drive components / motor

[0126] 52: Magnetic shield

[0127] 53: Ground wire

[0128] 54: Bolt

[0129] 55: Transmission components

[0130] 56: Shaft hole

[0131] 57: First transmission wheel

[0132] 58: Second transmission wheel

[0133] 58F: Limiting slot

[0134] 59: Motor shaft

[0135] 100: Induction heating cooking appliances

[0136] 161: Rotary auxiliary structure / bearing

[0137] 162: Support

[0138] 162A: Accommodation space

[0139] 162B: Accommodation space side wall

[0140] 162D: First support

[0141] 162E: Second support

[0142] 162F: Ring slot

[0143] 162G: One end of the first support member for connecting to the second support member

[0144] 162H: One end of the second support member used to connect to the first support member

[0145] 162I: the end of the second support member away from the first support member

[0146] 163: First end of support member

[0147] 164: Second end of the support member

[0148] 165: First blocking member

[0149] 165A: First blocking part

[0150] 165B: First connection part

[0151] 167G: First additional blocking part

[0152] 167H: Second additional blocking portion

[0153] 170: Cable drum assembly

[0154] 180: Cable reel

[0155] 180A: Upper side of the cable reel

[0156] 180B: Bottom of the cable drum

[0157] 180C: Cylindrical part

[0158] 180D: convex rib

[0159] 180E: Limit guide structure

[0160] 180F: First extension

[0161] 180G: Second extension

[0162] 180H: Guide bevel

[0163] 180I: First limit stop surface

[0164] 180J: Cable tray through hole

[0165] 180K: Second limit stop surface

[0166] 180L: Functional tank

[0167] 180M: blocking surface

[0168] 180P: First bundle

[0169] 180Q: First Constraint

[0170] 180R: Second restraint

[0171] 180S: First limit slot

[0172] 180T: Second limit slot

[0173] 180X: First end of cylindrical part

[0174] 180Y: Second end of cylindrical part

[0175] 182: Coil winding

[0176] 182A: Coiled part

[0177] 182B: terminal end

[0178] 183: Cable drum support

[0179] 183A: Center column

[0180] 183B: First Arm

[0181] 183C: First connection part / clamping protrusion

[0182] 183D: Third connection part / clip slot

[0183] 183E: Winding area

[0184] 183F: Winding center

[0185] 184: Magnetic component bracket

[0186] 184A: Central Structure

[0187] 184B: Magnetic component installation part / magnetic component installation groove

[0188] 184C: Second connection part / card slot

[0189] 184D: Mounting hole for center column

[0190] 184E: First chute

[0191] 184F: Fourth connecting part / clamping part

[0192] 184G: Connecting ribs

[0193] 185: Magnetic parts

[0194] 186: Wiring components

[0195] 187: Connection structure

[0196] 189: The first enameled wire

[0197] 189A: First connection point

[0198] 189B: Second connection point

[0199] P3: Central axis of cooking container

[0200] P8: Center axis of the coiling rack

[0201] PA: Center axis of the cable drum assembly DETAILED DESCRIPTION

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] The present application discloses a wire reel support for an electromagnetic heating cooking utensil, a wire reel assembly having the wire reel support, a wire reel device having the wire reel assembly, and an electromagnetic heating cooking utensil having the wire reel assembly or the wire reel device.

[0207] It should be noted that the electromagnetic heating cooking appliance according to the present application can be one of an electric rice cooker, an electric stew pot, an electric pressure cooker, an electric hot pot, an electric frying pan, an electric deep fryer, or an electromagnetic heating cooking appliance similar to the electromagnetic heating cooking appliance. The electromagnetic heating cooking appliance is taken as an example for explanation below.

[0208] like Figure 1 As shown, in a specific embodiment, the electromagnetic heating cooking utensil 100 (referred to as the cooking utensil 100) according to the present application includes a cover body 10 and a pot body 20. A heating device and a cooking container 30 (such as a pot) are arranged in the pot body. The cooking container 30 is used to hold food, and the heating device is used to heat the cooking container 30. The cover body 10 is used to cover the pot body 20. When the cover body 10 covers the pot body 20, a cooking space 31 is formed between the cover body 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.

[0209] 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 160 and a circuit board assembly 22. The pot body 20 has a base 26, which at least forms the bottom wall of the receiving cavity 21. The wire drum device 160 and the circuit board assembly 22 are both arranged on the base 26. Figure 2As shown, the wire drum device 160 includes a coiled wire 182, which is used to form a resonant inductor of an electromagnetic heating resonant circuit, so as to generate an alternating magnetic field required for electromagnetic heating after power is turned on. The circuit board assembly 22 is used to power the coiled wire 182. The circuit board assembly 22 is provided with, for example, a resonant capacitor used in conjunction with the coiled wire 182, a switch module (for example, a power switch tube IGBT), a control module, a power module, etc. The wire drum device 160 is arranged at the bottom of the accommodating cavity 21, and the cooking container 30 is detachably arranged in the magnetically inductive area of ​​the wire drum device 160 (that is, the electromagnetically heated area), for example, at least above. The cooking container 30 has a cooking container central axis P3. The cooking container 30 is generally in the shape of a rotating body with the cooking container central axis P3 as the axis.

[0210] The base 26 may also simultaneously provide a side wall of the accommodating cavity 21 , so that the base 26 is used to enclose the accommodating cavity 21 .

[0211] like Figure 1 and Figure 2 As shown, the wire reel device 160 includes a wire reel assembly 170, the wire reel assembly 170 includes at least one coiled wire 182, the coiled wire 182 is used to generate an alternating magnetic field after being powered on, the wire reel assembly 170 has a wire reel assembly central axis PA, and the wire reel assembly 170 is configured so that the magnetic field strength of the alternating magnetic field is non-uniformly distributed along the circumferential direction of the wire reel assembly 170. The electromagnetic heating cooking appliance 100 is configured so that the cooking container 30 and the wire reel assembly 170 are detachably arranged at least above the wire reel assembly 170, when the cooking container 30 is located at least above the wire reel assembly 170, the cooking container central axis P3 and the wire reel assembly central axis PA are substantially coincident or substantially parallel to each other, and at least a portion of the wire reel assembly 170 is rotatable relative to the cooking container 30 around the wire reel assembly central axis PA. As a convertible embodiment, in specific implementation, the cooking container 30 can also be selectively made rotatable relative to at least a portion of the wire reel assembly 170 around the cooking container central axis P3. Thus, one of the alternating magnetic fields generated by the cooking container 30 and the wire reel assembly 170 is rotatable relative to the other around the wire reel assembly central axis PA, so that the heated portion of the cooking container 30 rotates on the cooking container 30 along the circumferential direction of the cooking container 30.

[0212] 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 to each other means that the angle between the two central axes is ≤5°.

[0213] 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 100 .

[0214] In an embodiment not shown in the present application, the wire reel device 160 is used to be arranged on the side of the cooking container 30 (for example, the wire reel device 160 is configured to include a sleeve that can be sleeved on the outer periphery of the cooking container 30). Alternatively, the wire reel device 160 can also be arranged on the cover 10 (the cover 10 includes a receiving cavity for accommodating the wire reel device 160), so that the cooking container 30 and the wire reel device 160 are detachably arranged at least below the magnetically induced area of ​​the wire reel device 160. That is, in the present application, the cooking container 30 and the wire reel device 160 are detachably arranged on one side of the magnetically induced area of ​​the wire reel device 160 (that is, the coiled wire 182 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 and the central axis PA of the wire reel assembly are substantially coincident or substantially parallel to each other.

[0215] The driving device 50 disposed on the base 26 is used to drive one of the alternating magnetic fields generated by the cooking container 30 and the wire reel assembly 170 to rotate relative to the other around the central axis PA of the wire reel assembly. As some preferred embodiments of the present application, Figure 2 As shown, the wire drum assembly 170 includes a plurality of coiled wires 182, and the plurality of coiled wires 182 are arranged at intervals along the circumferential direction of the wire drum assembly 170, so that all the coiled wires 182 do not fill the annular area with the central axis PA of the wire drum assembly as the axis. Alternatively, the wire drum assembly 170 includes only one coiled wire 182, and the winding center of the coiled wire 182 deviates from the central axis PA of the wire drum assembly. The coiled wire 182 is not concentric with the wire drum assembly 170. Thus, along the circumferential direction of the wire drum assembly 170, the magnetic field line density is large and the magnetic field strength is strong in the area where the coiled wires 182 are distributed, and the magnetic field line density is small and the magnetic field strength is weak in the area where the coiled wires 182 are not distributed. That is, the non-uniform distribution of the magnetic field strength is achieved by making the coiled wires 182 non-uniformly distributed along the circumference of the wire drum assembly 170.

[0216] It should be noted that in the present application, the number of the coiled wires 182 included in the wire reel assembly 170 is not specifically limited. In a specific implementation, the number of the coiled wires 182 included in the wire reel assembly 170 can be selectively one, two, three, four, five, six, seven, eight, nine or more than ten. Figure 2 As shown, it is preferred that the number of the disc-shaped windings 182 is three, and the three disc-shaped windings 182 are spaced apart along the circumferential direction of the wire drum assembly 170 . It is further preferred that the three disc-shaped windings 182 are equally spaced apart along the circumferential direction of the wire drum assembly 170 .

[0217] It should also be pointed out that in the present application, "at least part of the wire reel assembly is rotatable relative to the cooking container around the central axis of the wire reel assembly" includes that at least part of the wire reel assembly can rotate a full circle around the central axis PA of the wire reel assembly, and also includes that at least part of the wire reel assembly can rotate less than 360° around the central axis PA of the wire reel assembly.

[0218] In summary, the wire reel assembly 170 is constructed so that the alternating magnetic field has N strong magnetic regions and N weak magnetic regions that are alternately distributed along the circumferential direction of the wire reel assembly 170, wherein the magnetic field strength of the strong magnetic region is greater than the magnetic field strength of the weak magnetic region. In the illustrated embodiment, the portion of the wire reel assembly 170 corresponding to the arrangement of the disc-shaped winding 182 is a strong magnetic region, and the portion corresponding to the gap between the two disc-shaped windings 182 is a weak magnetic region. The N strong magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 170, and the N weak magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 170. Among them, the electromagnetic heating cooking utensil 100 is constructed so that when the cooking container 30 is located at least above the wire reel assembly 170, at least a portion of the wire reel assembly 170 and one of the cooking container 30 can rotate ±180 / N degrees relative to the other.

[0219] It should be noted that N is any integer greater than or equal to 1; in a specific implementation, N can be optionally any value of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. It should be further pointed out that N is not limited to the values ​​listed above, and it can also be any value greater than 10. In a specific implementation, N can also be 11, 12, 13, etc.

[0220] As some preferred implementations of the present application, specifically as follows Figure 2 As shown, the wire drum assembly 170 is constructed so that the alternating magnetic field has three strong magnetic regions and three weak magnetic regions that are alternately distributed along the circumferential direction of the wire drum assembly 170 .

[0221] According to the present application, by making the wire reel assembly 170 include at least one coiled wire 182, and by making the wire reel assembly 170 rotatable relative to the cooking container 30, the effect of rotating heating of the electromagnetic heating cooking utensil 100 heat source can be achieved, and at the same time, the complex and changeable convection tumbling form and tumbling effect inside the cooking container 30 can be achieved, so that the food is heated more evenly, so as to achieve a better cooking effect, thereby improving the user experience. In particular, when the wire reel assembly 170 includes multiple coiled wires 182, the effect of rotating heating of multiple heat sources of the electromagnetic heating cooking utensil 100 heat source can be achieved, so that the food is heated more evenly and a better cooking effect is achieved.

[0222] Multiple disc windings 182 are arranged at intervals from each other, which can avoid electromagnetic self-interference between the disc windings, as well as problems such as large reverse pressure, low inductance, small heating power, large storage current, and messy heating waveform.

[0223] As some preferred embodiments of the present application, the electromagnetic heating cooking appliance 100 is configured such that when the cooking container 30 is placed at least above the wire reel assembly 170, the distance between the coiled wire 182 and the cooking container 30 is any value between 3 mm and 30 mm. In a specific implementation, the distance between the coiled wire 182 and the cooking container 30 is preferably between 6 mm and 10 mm.

[0224] According to the present application, the distance between the disc winding 182 and the cooking container 30 is set between 3 mm and 30 mm to solve the problems of the magnetic field generated by the disc winding 182 covering a small area of ​​the cooking container 30 and insufficient firepower due to the distance being too large; at the same time, it can also solve the problems of high heat generation and increased energy consumption of the disc winding 182 due to the distance between the disc winding 182 and the cooking container 30 being too small.

[0225] The cable drum assembly 170 includes a cable drum 180 , which is preferably configured in a disc shape and has a cable drum central axis P8 , which is also the cable drum assembly central axis PA. The disc-shaped windings 182 are arranged on the cable drum 180 at intervals along the circumferential direction of the cable drum 180 .

[0226] The coiled wire 182 is coiled around a winding center that is offset from the bobbin center axis P8 , so that the coiled wire 182 is not concentric with the bobbin 180 , and the coiled wire 182 is not concentric with the bobbin assembly 170 .

[0227] In the illustrated embodiment, the driving device 50 is used to drive the wire coiling rack 180 to rotate relative to the pot body 20 (i.e., the cooking container 30) around the central axis PA of the wire coil assembly, so that the wire coil assembly 170 rotates relative to the pot body 20 (i.e., the cooking container 30) around the central axis PA of the wire coil assembly. In the present application, the wire coiling rack 180 is also referred to as a turntable 180. It should be noted that the driving device 50 in the present application is not specifically limited, and it can be any device that can drive the wire coil assembly 170 (specifically, the wire coiling rack 180) to rotate.

[0228] Specifically, Figure 3 and Figure 4 As shown, the base 26 has an upwardly protruding support member 162, and the wire drum 180 is mounted on the support member 162. The driving device 50 is used to drive the wire drum 180 to rotate relative to the support member 162 around the central axis PA of the wire drum assembly.

[0229] Optionally, the driving device 50 may include a driving component 51 and a transmission component 55. The driving component 51 is used to provide a driving force for rotating the coil holder 180 relative to the support 162. The transmission component 55 is connected between the driving component 51 and the coil holder 180 and is used to transmit the driving force to the coil holder 180. That is, the driving component 51 is drivably connected to the coil assembly 170 via the transmission component 55. Under the drive of the driving component 51, the coil assembly 170 can rotate relative to the cooking container 30 around the central axis PA of the coil assembly.

[0230] The driving component 51 is configured as a motor, for example. The motor 51 is a stepping motor, for example, so as to be able to provide power for the forward and reverse rotation of the coil assembly 170. The motor 51 is electrically connected to the control module of the circuit board assembly 22 and operates under the control of the control module. By controlling the motor 51, the control module can achieve the forward and reverse rotation and intermittent rotation of the turntable 180, and the rotation speed and stroke are adjustable. The rotation speed of the turntable 180 ranges from 1 r / min to 350 r / min, preferably 4 r / min to 6 r / min.

[0231] The transmission component 55 includes a first transmission wheel 57 and a second transmission wheel 58, for example. Both the first transmission wheel 57 and the second transmission wheel 58 are configured as gears that mesh with each other. Further, the first transmission wheel 57 is connected to the motor shaft 59 (motor output shaft) of the motor 51, and the second transmission wheel 58 is connected to the coil holder 180. When the motor 51 is powered, the motor 51 can drive the coil holder 180 to rotate through the first transmission wheel 57 and the second transmission wheel 58, and finally the coil assembly 170 rotates.

[0232] It should be noted that the first transmission wheel 57 and the second transmission wheel 58 can be selectively configured as one of a gear, a roller, a sprocket, a pulley, a friction wheel, etc. Preferably, both the first transmission wheel 57 and the second transmission wheel 58 are configured as gears.

[0233] As some preferred embodiments of the present application, as Figure 4 shown, the electromagnetic heating cooking appliance 100 further includes a magnetic shielding cover 52. The magnetic shielding cover 52 is made of a metal material and is used to cover at least a part of the driving device 50 (for example, cover the motor 51) to shield the magnetic field generated by the disc-shaped winding 182. For example, the motor 51 is mounted on the base 26 of the cooking pot body 20 through two bolts 54, and the magnetic shielding cover 52 can be mounted to the base 26 by using the two bolts 54 at the same time, so that the outer shell of the motor 51 contacts the magnetic shielding cover 52. The magnetic shielding cover 52 is provided with a shaft hole 56 for the motor shaft 59 to pass through.

[0234] As some preferred embodiments of the present application, the electromagnetic heating cooking appliance 100 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 to 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 100, such as the grounding terminal on the circuit board assembly 22 or the grounding terminal on the power socket 27. Under the action of the grounding wire 53, the housing of the motor 51 and the magnetic shield 52 are grounded together, which can also effectively improve the magnetic shielding effect of the magnetic shield 52.

[0235] In order to achieve a better magnetic isolation effect, the motor shaft 59 can be further selectively made of non-metallic materials. Of course, the motor shaft 59 can also be made of metal materials. In addition, the transmission assembly 55 (first transmission wheel 57, second transmission wheel 58, etc.) included in the drive device 50 can also be made of non-metallic materials.

[0236] The structure of the cable drum device 160 will be described below.

[0237] like Figure 5 and Figure 6 As shown, the cable drum device 160 includes a support member 162 and a cable drum assembly 170. The support member 162 is disposed on the base 26, and the cable drum assembly 170 is disposed on the support member 162. Specifically, the cable drum frame 180 of the cable drum assembly 170 is connected to the support member 162 and is rotatable relative to the support member 162 around the central axis PA of the cable drum assembly. It should be noted that the present application does not impose any specific restrictions on the structure of the support member 162, and it can be any structural form that meets the installation requirements of the cable drum assembly 170.

[0238] The cable drum device 160 may further include a temperature sensor assembly 40. The temperature sensor assembly 40 is disposed on the support 162 and is used to contact the cooking container 30 to sense the bottom temperature of the cooking container 30. For example, the support 162 includes a receiving space 162A, and the temperature sensor assembly 40 is disposed in the receiving space 162A and is exposed from the surface of the support 162 to contact the cooking container 30. The support 162 includes a support first end 163 and a support second end 164 that are oppositely disposed along the axial direction of the cable drum assembly 170, the support first end 163 being on the top and the support second end 164 being on the bottom. The temperature sensor assembly 40 is exposed from the support first end 163, and the support second end 164 is provided with a wire outlet (not shown) for leading out the cable 42 of the temperature sensor assembly 40.

[0239] The wire coiling rack 180 is, for example, sleeved on the outer circumference of the support member 162. The coiled wire 182 is disposed on one side of the wire coiling rack 180 facing the second end portion 164 of the support member. The wire coil support 283 is connected to one side of the wire coiling rack 180 facing the second end portion 164 of the support member.

[0240] In a specific implementation, a cylindrical portion 180C is provided at the central portion or approximately the central portion of the wire coiling frame 180. The cylindrical portion 180C has a cylindrical portion first end 180X and a cylindrical portion second end 180Y which are arranged oppositely along the axial direction of the wire coiling frame 180. The first end 180X of the cylindrical portion 180C is connected to the central portion of the wire coiling frame 180, and the second end 180Y of the cylindrical portion 180C extends in a direction away from the wire coiling frame 180. The central axis of the cylindrical portion 180C coincides with the central axis P8 of the wire coiling frame. A wire coil through hole 180J extending along the axial direction of the wire coiling frame 180 is formed inside the cylindrical portion 180C. At least a portion of the support member 162 is arranged in the wire coil through hole 180J. The first end 163 of the support member and the second end 164 of the support member can also be understood as being arranged oppositely along the axial direction of the cylindrical portion 180C. The support member first end portion 163 corresponds to the first end 180X of the cylindrical portion, and the support member second end portion 164 corresponds to the second end 180Y of the cylindrical portion.

[0241] The support member 162 is adapted to the wire drum through hole 180J, so that the wire drum frame 180 can rotate around the central axis PA of the wire drum assembly relative to the support member 162. For example, the side wall of the wire drum through hole 180J is connected to the side wall of the support member 162 through a swivel substructure 161, wherein the axis of the swivel substructure 161 coincides with the central axis PA of the wire drum assembly. The swivel substructure 161 can be selectively configured as a rolling bearing, so that the inner ring of the rolling bearing 161 is tightly matched with the outer peripheral surface of the support member 162, and the outer ring of the rolling bearing 161 is tightly matched with the inner peripheral surface of the wire drum through hole 180J. As a convertible embodiment, the swivel substructure 161 can also be selectively configured as a sliding sleeve. In order to prevent electromagnetic interference, the swivel substructure 161 is further selectively made of non-metallic material.

[0242] In a specific implementation, the cylindrical portion 180C and the cable reel 180 may be selectively formed into an integrated structure, or the first end of the cylindrical portion 180C may be selectively connected to the cable reel 180 by bonding, welding, threaded connection, or the like.

[0243] Further, the outer periphery of the support member 162 is selectively formed with an annular groove 162F for accommodating the rotary auxiliary structure 161. In specific implementation, the rolling bearing 161 is sleeved in the annular groove 162F. As some preferred embodiments of the present application, Fig.13 and Fig.14As shown, the support member 162 includes a first support member 162D and a second support member 162E. The first support member 162D is arranged at the first end 163 of the support member. The second support member 162E is arranged at the second end 164 of the support member and is connected (e.g., clamped, threaded, etc.) to the first support member 162D. One end 162G of the first support member 162D for connecting to the second support member 162E has a first outer diameter, one end 162H of the second support member 162E for connecting to the first support member 162D has a second outer diameter, and one end 162I of the second support member 162E away from the first support member 162D has a third outer diameter, the first outer diameter is greater than the second outer diameter, and the third outer diameter is greater than the second outer diameter, so that the portion 162H corresponding to the second outer diameter forms a clamping groove 162F. The rotary auxiliary structure 161 is arranged at the portion 162H of the second support member 162E having the second outer diameter.

[0244] The first support member 162D and the second support member 162E are both constructed as hollow structures to form a receiving space 162A. The outlet of the cable 42 is arranged on the second support member 162E. Along the axial direction of the cable drum assembly 170, the rotary substructure 161 is closer to the first end 163 of the support member than the outlet, so that the position of the outlet avoids the cable drum assembly 170, and the cable 42 has no effect on the rotation of the cable drum assembly 170.

[0245] The inner circumferential surface of the wire coil through hole 180J has a blocking surface 180M extending toward the cylindrical portion 180C in the radial direction of the wire coil through hole 180J, and the blocking surface 180M is used to contact the side of the swivel substructure 161 facing the first end portion 163 of the support member. Thus, the swivel substructure 161 can support the cylindrical portion 180C in the height direction of the cooking appliance 100, and further support the wire coil rack 180 and the wire coil assembly 170.

[0246] For example Figure 6 and Figure 7 As shown, the cable drum device 160 further includes a first blocking member 165, which is disposed at the first end of the support member, and includes a first blocking portion 165A extending outwardly in the radial direction of the cable drum assembly 170 to block the cable drum frame 180 from moving in the axial direction of the cable drum assembly 170 in a direction away from the second end 164 of the support member. The first blocking member 165 further includes a first connecting portion 165B, which is connected to the first blocking portion 165A, and the first connecting portion 165B is used to connect the first end 163 of the support member. The first connecting portion 165B is configured as a sleeve extending in the axial direction of the cable drum assembly 170, the sleeve is sleeved on the outer periphery of the first end 163 of the support member, and the sleeve is sleeved on the outer periphery of the first support member 162D.

[0247] A through hole is provided at an end of the first blocking member 165 corresponding to one end of the first connecting portion 165B connected to the first blocking portion 165A (the upper end of the first blocking member 165 in the figure) for exposing the temperature sensor assembly 40 .

[0248] 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 disc assembly 170. Fig.14 As shown, in order to protect the temperature sensor assembly 40 from being separated from the accommodation space 162A, the support member 162 is provided with a first additional blocking portion 167G and a second additional blocking portion 167H spaced apart along the axial direction of the wire drum assembly 170, so as to limit at least part of the temperature sensor assembly 40 between the first additional blocking portion 167G and the second additional blocking portion 167H. For example, the upper end surface of the first support member 162D forms the first additional blocking portion 167G, and the convex rib inside the second support member 162E forms the second additional blocking portion 167H, and the spring 41 of the temperature sensor assembly 40 is limited between the first additional blocking portion 167G and the second additional blocking portion 167H along the axial direction of the wire drum assembly 570.

[0249] The drive device 50 is connected to the cylindrical portion 180C. Figure 8 and Fig. 9 As shown in some preferred embodiments of the present application, the outer peripheral surface of the cylindrical portion 180C is further selectively provided with a connection structure 187 for connecting the drive device 50. The connection structure 187 for connecting the drive device 50 in the present application is not specifically limited, and it can be any structure that can connect the drive device 50 and rotate the wire drum assembly 170 (specifically, the wire drum frame 180).

[0250] As some examples under some of the aforementioned embodiments, the connection structure 187 may selectively include the second transmission wheel 58 (the transmission assembly 55 only includes the first transmission wheel 57). For example, the second transmission wheel 58 is integrally formed or connected to the connection structure 187, and the second transmission wheel 58 is connected to the cylindrical portion 180C. For example, the second transmission wheel 58 is integrally formed with the cylindrical portion 180C, and the axis of the second transmission wheel 58 coincides with the central axis of the cylindrical portion 180C. Thus, the connection structure 187 is used to connect with the first transmission wheel 57 of the driving device 50.

[0251] As a convertible embodiment, the driving device 50 can selectively include a second transmission wheel 58, and the connecting structure 187 is used to connect the second transmission wheel 58. When the second transmission wheel 58 is connected to the connecting structure 187, the axis of the second transmission wheel 58 coincides with the central axis of the cylindrical portion 180C. The second transmission wheel 58 is an annular structure, which is used to be sleeved on the outer periphery of the cylindrical portion 180C. The connecting structure 187 is provided on the outer peripheral surface of the cylindrical portion 180C, and is used to connect the second transmission wheel 58.

[0252] The connection structure 187 includes a first limit stop surface 180I. The first limit stop surface 180I extends outward from the outer peripheral surface of the cylindrical portion 180C along the radial direction of the cylindrical portion 180C and toward the second end 180Y of the cylindrical portion 180C, and is used to limit the second transmission wheel 58 from moving toward the wire coiling frame 180 along the axial direction of the cylindrical portion 180C. In a specific implementation, an annular convex rib is provided in the middle of the outer side of the cylindrical portion 180C, and the surface of the annular convex rib facing the second end of the cylindrical portion 180C is the first limit stop surface 180I. The present application can limit the axial position of the second transmission wheel 58 by making the connection structure include the first limit stop surface 180I to prevent the second transmission wheel 58 from moving toward the wire coiling frame 180.

[0253] As some preferred embodiments of the present application, the inner circumferential surface of the second transmission wheel 58 may be selectively provided with at least one second connecting body 58F (see Figure 4 ), the connection structure 187 includes at least one first connection body 180D, the first connection body 180D is used to be arranged corresponding to the second connection body 58F and connected to the second connection body, and the first connection body 180D is closer to the second end 180Y of the cylindrical portion 180C than the first limit stop surface 180I. When the second transmission wheel 58 is installed to the set position, the first connection body 180D is engaged with the second connection body 58F to limit the second transmission wheel 58 from rotating relative to the connection structure 187, so that the cylindrical portion 180C can rotate synchronously with the second transmission wheel 58.

[0254] In a specific implementation, a plurality of second connectors 58F may be provided at intervals on the inner circumferential surface of the second transmission wheel 58, and the connection structure 187 may include a plurality of first connectors 180D corresponding to the second connectors 58F and provided at intervals along the circumferential direction of the cylindrical portion 180C. It should be noted that the number of the second connectors 58F provided on the inner circumferential surface of the second transmission wheel 58 is not specifically limited, and may be selectively provided according to actual needs.

[0255] As some preferred embodiments under the aforementioned embodiments, the first connecting body 180D is further made into a convex rib provided on the outer peripheral surface of the cylindrical portion 180C, and the second connecting body 58F is a limiting groove provided on the inner peripheral surface of the second transmission wheel 58, and the limiting groove 58F extends along the axial direction of the second transmission wheel 58, and the limiting groove 58F is used to accommodate the convex rib 180D. As some alternative embodiments, the second connecting body 58F can also be selectively made into a convex rib provided on the inner peripheral surface of the second transmission wheel 58, and the first connecting body 180D is a limiting groove provided on the outer peripheral surface of the cylindrical portion 180C, and the limiting groove extends along the axial direction of the cylindrical portion 180C, and the limiting groove is used to accommodate the convex rib on the inner peripheral surface of the second transmission wheel 58.

[0256] The present application can quickly fix the second transmission wheel 58 to the cylindrical portion 180C by providing the rib 180D and the limiting groove 58F, which can effectively improve the assembly efficiency of the second transmission wheel 58. In addition, under the action of the rib 180D and the limiting groove 58F, the second transmission wheel 58 can also drive the cable drum 180 to rotate during the rotation process.

[0257] As some preferred embodiments of the present application, the connection structure 187 may further include at least one limiting guide structure 180E. The limiting guide structure 180E is disposed on the outer circumferential surface of the cylindrical portion 180C, and the side of the limiting guide structure 180E facing the first end 180X of the cylindrical portion 180C includes a second limiting stop surface 180K, the second limiting stop surface 180K extends outward from the outer circumferential surface of the cylindrical portion 180C along the radial direction of the cylindrical portion 180C, and the second limiting stop surface 180K is closer to the second end 180Y of the cylindrical portion 180C than the first limiting stop surface 180I. In specific implementation, the connection structure 187 may further selectively include a plurality of limiting guide structures 180E, and the plurality of limiting guide structures 180E are spaced apart along the circumferential direction of the cylindrical portion 180C.

[0258] As a preferred embodiment of some of the aforementioned embodiments, Fig. 9 As shown, the position limiting guide structure 180E has a guide slope 180H located on the side facing away from the cylindrical portion 180C, and the guide slope 180H is configured to be inclined relative to the axis of the cylindrical portion 180C, so that the distance between the end of the guide slope 180H facing the second end 180Y of the cylindrical portion 180C and the axis of the cylindrical portion 180C is smaller than the distance between the end of the guide slope 180H facing the first end 180X of the cylindrical portion 180C and the axis of the cylindrical portion 180C. The parts of the cylindrical portion 180C located on both sides of the position limiting guide structure 180E along the circumferential direction of the cylindrical portion 180C are configured as functional grooves 180L extending along the axial direction of the cylindrical portion 180C, and the functional grooves 180L penetrate the side wall of the cylindrical portion 180C.

[0259] It should be pointed out that the structure of the position-limiting guide structure 180E in the present application is not specifically limited, and it can be any structure that can play a guiding role when installing the second transmission wheel 58 and a limiting role after the second transmission wheel 58 is installed in place. Similarly, the number of position-limiting guide structures 180E included in the connection structure 187 is also not specifically limited, and it can be selectively set according to actual needs. The number of position-limiting guide structures 180E included in the connection structure 187 can be selectively made to be two, three, four, five or more than six. For example, the connection structure 187 includes four position-limiting guide structures 180E, and the four position-limiting guide structures 180E are arranged at equal intervals along the circumferential direction of the cylindrical portion 180C.

[0260] According to the present application, by providing a plurality of position limiting guide structures 180E, the second transmission wheel 58 can be guided at multiple points, which is helpful for the rapid installation of the second transmission wheel 58. Secondly, by providing a guiding slope 180H on the position limiting guide structure 180E, the second transmission wheel 58 can be quickly connected to the cylindrical portion 180C under the action of the guiding slope 180H. In addition, by providing functional grooves 180L penetrating the cylindrical portion 180C on both sides of the position limiting guide structure 180E, when the second transmission wheel 58 is installed, the position limiting guide structure 180E in a cantilever state will be displaced toward the center of the cylindrical portion 180C, so that the second transmission wheel 58 can be more easily installed to the set position.

[0261] It should be pointed out that the second transmission wheel 58 in the present application is not specifically limited, and it can be any wheel body that can realize power transmission.

[0262] like Fig.10 , Fig.11a and Fig.11b As shown, as some preferred embodiments of the present application, the wire coil assembly 170 further includes at least one first enameled wire 189 and at least one connecting wire assembly 186. The first enameled wire 189 is used to be coiled into a coiled wire 182. The first enameled wire 189 has a first connection point 189A and a second connection point 189B along the length, and the portion of the first enameled wire 189 located between the first connection point 189A and the second connection point 189B is coiled into at least one coiled wire 182, which is used to form a resonant inductor of an electromagnetic heating resonant circuit. All the coiled wires 182 are arranged on the coiling rack 180 along the circumferential direction of the coiling rack 180. The connecting wire assembly 186 is arranged corresponding to the first enameled wire 189. One end of the connecting component 186 is used to connect to the first connection point 189A and the second connection point 189B, and the other end of the connecting component 186 is used to connect to the circuit board assembly 22, so that the disc winding 182 and the circuit board assembly 22 always remain conductive (the disc winding 182 and the circuit board assembly 22 always remain conductive during the rotation of the coil rack 180).

[0263] It should be noted that the connection assembly 186 in the present application is not specifically limited, and it can be any structure that can keep the disc winding 182 and the circuit board assembly 22 always connected. In a specific implementation, the connection assembly 186 can be a wire or a brush slip ring assembly.

[0264] The connection assembly 186 includes a first wiring segment 182C and a second wiring segment 182D. One end of the first wiring segment 182C is used to connect to the first connection point 189A, and the other end of the first wiring segment 182C is used to connect to the circuit board assembly 22. One end of the second wiring segment 182D is used to connect to the second connection point 189B, and the other end of the second wiring segment 182D is used to connect to the circuit board assembly 22. In a specific implementation, the first wiring segment 182C can be selectively made to be a part of the first enameled wire 189, for example, a section of the first enameled wire 189 located on the side opposite to the coiled wire 182 of the first connection point 189A. Similarly, the second wiring segment 182D is made to be a part of the first enameled wire 189, for example, a section of the first enameled wire 189 located on the side opposite to the coiled wire 182 of the second connection point 189B. As a convertible embodiment, the first wiring segment 182C and the first enameled wire 189 may be selectively different enameled wires, and the second wiring segment 182D and the first enameled wire 189 may be selectively different enameled wires.

[0265] The first enameled wire 189 is further selectively made to include a coiling portion 182A and two terminal portions 182B. The coiling portion 182A is wound on the coiling frame 180 to form an effective resonant inductance of the electromagnetic heating resonant circuit. The two terminal portions 182B are portions of the first enameled wire 189 that are not used to form an effective resonant inductance, and the coiling portion 182A is located between the two terminal portions 182B. The ends of the two terminal portions 182B away from the coiling portion 182A are respectively a first connection point 189A and a second connection point 189B. The coiled winding 182 is arranged on one side of the coiling frame 180 facing the second end 180Y of the cylindrical portion 180C, and at least part of the terminal portion 182B is wired along the outer peripheral surface of the cylindrical portion 180C. It can be understood that the coiling portion 182A is coiled around the winding center in the winding area 183E. The coiling portion 182A is, for example, coiled in a coiled spiral around the winding center.

[0266] As some preferred embodiments of the present application, at least one first bundling member 180P may be further selectively provided on the outer peripheral surface of the cylindrical portion 180C, for gathering all the terminal portions 182B to the outer peripheral surface of the cylindrical portion 180C, so that at least part of the terminal portions 182B are routed along the outer peripheral surface of the cylindrical portion 180C. It should be noted that the number of first bundling members 180P provided on the cylindrical portion 180C is not specifically limited, and may be selectively provided according to the length of the cylindrical portion 180C.

[0267] In order to better fix the terminal portion 182B, a plurality of first bundle members 180P are further provided on the cylindrical portion 180C, and the plurality of first bundle members 180P are arranged at intervals along the axial direction of the cylindrical portion 180C, so that at least a portion of the terminal portion 182B is wired along the axial direction of the cylindrical portion 180C on the outer peripheral surface of the cylindrical portion 180C. Fig.19 As shown, two first bundling members 180P are arranged at intervals in the axial direction of the cylindrical portion 180C so that parts of the terminal portions 182B are routed in the axial direction of the cylindrical portion 180C on the outer peripheral surface of the cylindrical portion 180C.

[0268] like Fig.12 As shown, as some preferred embodiments of the present application, the first bundle 180P is further selectively made to include a first constraint portion 180Q and a second constraint portion 180R. The first constraint portion 180Q extends from the outer peripheral surface of the cylindrical portion 180C in a direction away from the cylindrical portion 180C. The second constraint portion 180R is connected to one end of the first constraint portion 180Q away from the outer peripheral surface of the cylindrical portion 180C, and extends generally along the circumferential direction of the cylindrical portion 180C, so that a first enameled wire limiting groove is formed between the second constraint portion 180R and the outer peripheral surface of the cylindrical portion 180C, and all the terminal portions 182B are gathered in the limiting groove. By making the first bundle 180P include a limiting groove formed by the first constraint portion 180Q and the second constraint portion 180R, the terminal portion 182B can be quickly gathered in the limiting groove, making the wiring process more convenient and easy to operate.

[0269] In order to enable the end portions 182B to be grouped and fixed, the second constraint portion 180R is further extended from one end of the first constraint portion 180Q away from the outer peripheral surface of the cylindrical portion 180C along the circumferential direction of the cylindrical portion 180C toward both sides, and a first limiting groove 180S and a second limiting groove 180T are formed on both sides of the first constraint portion 180Q, and all the ends having the first connection point 189A are gathered in the first limiting groove 180S, and all the end portions 182B having the second connection point 189B are gathered in the second limiting groove 180T.

[0270] As some preferred embodiments of the present application, the cable drum device 160 may further selectively include a second bundling member, which is used to gather all the first wiring segments 182C. The cable drum device 160 may also include a third bundling member, which is used to gather all the second wiring segments 182D. In specific implementations, the second bundling member and the third bundling member may selectively be configured as insulating sleeves.

[0271] In specific implementation, Fig.13 As shown, the electromagnetic heating cooking appliance 100 also includes a first wiring terminal 23A and a second wiring terminal 23B. The circuit board assembly 22 also includes a first power supply line 24A and a second power supply line 24B. The first wiring terminal 23A and the second wiring terminal 23B are both arranged on the base 26. The first power supply line 24A and the second power supply line 24B are wiring conductors extending from the printed circuit board of the circuit board assembly 22. One end of the first power supply line 24A is connected to the printed circuit board of the circuit board assembly 22, and the other end is connected to the first wiring terminal 23A. One end of the second power supply line 24B is connected to the printed circuit board of the circuit board assembly 22, and the other end is connected to the second wiring terminal 23B. One end of the first wiring segment 182C is connected to the first connection point 189A, and the other end is connected to the first wiring terminal 23A. One end of the second wiring segment 182D is connected to the second connection point 189B, and the other end is connected to the second wiring terminal 23B.

[0272] Thus, the two ends 189A and 189B of the disc-shaped winding 182 are electrically connected to the printed circuit board of the circuit board assembly 22 through the combination of the first wiring segment 182C, the first wiring terminal 23A and the first power supply line 24A, and the combination of the second wiring segment 182D, the second wiring terminal 23B and the second power supply line 24B, so that the circuit board assembly 22 can supply power to the disc-shaped winding 182.

[0273] The first power supply line 24A and the second power supply line 24B can be single-strand wires or multi-strand wires. Specifically, the number of wire strands is consistent with the number of the first enameled wires 189. That is, when the wire reel assembly 270 includes M first enameled wires 189, the first power supply line 24A includes M wires (strands), and the second power supply line 24B includes M wires (strands). Fig.11a In the illustrated embodiment, the wire reel assembly 170 includes a first enameled wire 189, and the three coiled wires 182 are all formed by winding the first enameled wire 189. The first power supply line 24A and the second power supply line 24B each include only one (strand) of wire. Fig.11b In the illustrated embodiment, the wire reel assembly 170 includes three first enameled wires 189 , wherein each first enameled wire 189 is coiled into a coil-shaped winding 182 , and the first power supply wire 24A and the second power supply wire 24B each include three (strands) of conductors.

[0274] As some preferred embodiments of the present application, the base 26 is further selectively provided with a wiring guide assembly 26C for guiding the first wiring segment 182C and the second wiring segment 182D, and the wiring guide assembly 26C is located below the cable tray 180. Specifically, as Fig.13 As shown, the wiring guide assembly 26C includes a first vertical rib group and a second vertical rib group. The first vertical rib group includes a plurality of first vertical ribs 26A spaced apart from each other, the plurality of first vertical ribs 26A are located between the central axis of the first wiring terminal 23A and the wire coiling rack 180, and the first wiring segment 182C sequentially passes through the gap between two adjacent first vertical ribs 26A and is wired in an S-shape. The second vertical rib group includes a plurality of second vertical ribs 26B spaced apart from each other, the plurality of second vertical ribs 26B are located between the central axis of the second wiring terminal 23B and the wire coiling rack 180, and the second wiring segment 182D sequentially passes through the gap between two adjacent second vertical ribs 26B and is wired in an S-shape.

[0275] Preferably, the portion of the base 26 where the wiring guide assembly 26C is provided can be constructed as a recessed portion 26D of the base 26, and the cooking appliance 100 includes a cover (not shown) for covering the recessed portion 26D, so that the first wiring segment 182C and the second wiring segment 182D can be at least partially encapsulated to avoid interference between the first wiring segment 182C and the second wiring segment 182D and other components of the cooking appliance 100.

[0276] In specific implementation, Fig.11b , Fig.14 and Fig.15 As shown, the wire reel assembly 170 can reciprocate less than 360° around the central axis PA of the wire reel assembly relative to the cooking container 30. Specifically, Fig.11b is the initial position of the cable drum assembly 170 before rotation; Fig.14 is the position of the cable drum assembly 170 after positive rotation (for example, positive rotation of 60 degrees); Fig.15 It is the position after the wire reel assembly 170 is rotated in the reverse direction (for example, rotated in the reverse direction by 60 degrees). As can be seen from the figure, the connecting assembly 186 is pulled during the rotation of the wire reel assembly 170. Since the connecting assembly 186 has a sufficient length, the coiled wire 182 and the circuit board assembly 22 are always connected.

[0277] The structure of the cable drum assembly 170 is described below.

[0278] like Figures 16 to 20As shown, the cable drum assembly 170 includes a cable drum frame 180, at least one cable drum support 183 and at least one coiled wire 182. As described above, the cable drum frame 180 has a cable drum frame central axis P8. The cable drum support 183 is connected to the cable drum frame 180 and protrudes from the surface of the cable drum frame 180. The cable drum support 183 includes a stopper 183B arranged opposite to the surface of the cable drum frame 180, so that a winding area 183E for winding the coiled wire 182 is formed between the stopper 183B and the surface of the cable drum frame 180. The cable drum support 183 has a winding center 183F, and the winding center 183F is offset from the cable drum frame central axis P8. The coiled wire 182 is wound around the winding center 183F in the winding area 183E.

[0279] As mentioned above, the coiled wire 182 is used to form the resonant inductance of the electromagnetic heating resonant circuit to generate the alternating magnetic field required for electromagnetic heating after power is turned on. The coiled wire 182 has a coiled portion 182A for forming an effective resonant inductance of the electromagnetic heating resonant circuit. It can be understood that the coiled portion 182A is coiled around the winding center 183F in the winding area 183E. The coiled portion 182A is, for example, coiled in a spiral shape around the winding center 183F.

[0280] The wire drum support 183 includes a central column 183A and at least one first arm 183B. The central column 183A is used to wind the enameled wire (e.g., the first enameled wire 189) around the central column 183A to form a coiled wire 182. The axis of the central column 183A is also the winding center 183F. The central column 183A is connected to the coiling frame 180. The first arm 183B is connected to the central column 183A and extends outward in the radial direction of the central column 183A. The central column 183A is substantially perpendicular to the surface of the coiling frame 180, and the first arm 183B is substantially parallel to the surface of the coiling frame 180, so that the first arm 183B constitutes a limiting portion, and the winding area 183E is located between the first arm 183B and the coiling frame 180. The axis of the central column 183A is also the winding center of the coiled wire 182.

[0281] Preferably, the section of the central column 183A between the first arm 183B and the wire coiling frame 180 is a cylindrical structure, so that the coiled wire 182 is coiled into a circular shape. The outer diameter of the cylindrical structure is any value between 4 mm and 20 mm. Of course, the section of the central column 183A between the first arm 183B and the wire coiling frame 180 can also be an elliptical column, a prism, etc., so that the coiled wire 182 is coiled into the shape of the cross section of the section.

[0282] Preferably, the wire drum support 183 includes a plurality of first arms 183B, for example, the wire drum support 183 includes 2 to 8 first arms 183B. The plurality of first arms 183B are arranged at intervals along the circumferential direction of the central column 183AB, for example, the plurality of first arms 183B are arranged at equal intervals along the circumferential direction of the central column 183AB.

[0283] Preferably, the wire reel assembly 170 includes a plurality of wire reel supports 183, for example, the wire reel assembly 170 includes 2 to 8 wire reel supports 183, and the plurality of wire reel supports 183 are arranged at intervals on the wire reel rack 180 along the circumferential direction of the wire reel rack 180, for example, the plurality of wire reel supports 183 are arranged at equal intervals on the wire reel rack 180 along the circumferential direction of the wire reel rack 180. The wire reel assembly 170 may include a plurality of wire reel supports 183, thereby including a plurality of coiled wires 182. At least part (for example, two) of the plurality of coiled wires 182 may be formed by winding one enameled wire; or, each coiled wire 182 may be formed by winding different enameled wires.

[0284] It should be pointed out that in the present application, the number of the wire coil brackets 183 included in the wire coil assembly 170 is not specifically limited, and it can be selectively set according to actual needs. In specific implementation, the number of wire coil brackets 183 included in the wire coil assembly 170 can be selectively one, two, three, four, five, six, seven, eight, nine or more than ten. In the illustrated embodiment, it is preferred that the number of wire coil brackets 183 is set to three, and the three coil windings 182 are arranged at intervals along the circumferential direction of the wire coil assembly 170. The present application arranges a plurality of wire coil brackets 183 on the wire coil assembly 170, and arranges coil windings 182 on the plurality of wire coil brackets 183, thereby enabling the electromagnetic heating cooking utensil 100 including the same to achieve the function of multi-point heating. By arranging the plurality of wire coil brackets 183 at equal intervals along the circumference of the coil rack 180, multiple positions of the cooking container 30 can be evenly heated under the action of the plurality of coil windings 182.

[0285] The wire drum bracket 183 and the wire coiling rack 180 may be connected via a connector; or, the wire drum bracket 183 and the wire coiling rack 180 may be integrally formed (e.g., injection molded); or, the wire drum bracket 183 includes a bracket connection portion for connecting the wire drum bracket to the wire coiling rack 180, and the wire coiling rack 180 is provided with the same number of wire coiling rack connection portions as the wire drum bracket, and the bracket connection portion is connected to the wire coiling rack connection portion in a one-to-one correspondence. The bracket connection portion and the wire coiling rack connection portion may be connected by snap connection, thread connection, or adhesive connection.

[0286] Preferably, the wire coiling rack 180 has a radially symmetrical structure. The axial cross-section of the wire coiling rack 180 is a C-shaped structure, which can increase the relative area between the wire coiling rack 180 and the cooking container 30, and then increase the area of ​​the heating area of ​​the wire coil assembly 170 for the cooking container 30. The wire coil support 183 and the coiled wire 182 are arranged on the outer side 180B of the C-shaped structure (that is, the lower side of the wire coiling rack 180 when actually used). The cooking container 30 is located on the inner side 180A of the C-shaped structure (that is, the upper side of the wire coiling rack 180 when in use).

[0287] The wire drum assembly 170 may further include a magnetic conductive member support 184 and a magnetic conductive member 185. The magnetic conductive member support 184 is connected to the side of the wire drum support 183 away from the wire drum frame 180. The magnetic conductive member support 184 is provided with at least one magnetic conductive member mounting portion 184B. The magnetic conductive member 185 is disposed on the magnetic conductive member mounting portion 184B. Thus, the coiled wire 182 is located between the wire drum frame 180 and the magnetic conductive member 185. The wire drum assembly 170 is configured such that the magnetic conductive member 185 is at least partially opposite to the coiled wire 182, so that at least a portion of the magnetic conductive member 185 extends along the magnetic field lines of the magnetic field of the coiled wire 182, so that the magnetic conductive member 185 can focus (gather) the magnetic field lines of the magnetic field generated by the coiled wire 182.

[0288] Specifically, Fig.21 As shown, the magnetic member bracket 184 includes a central structure 184A for connecting to the wire drum bracket, and the magnetic member mounting portion 184B is connected to the central structure 184A. For example, the magnetic member bracket 184 includes a plurality of (e.g., 2 to 8) magnetic member mounting portions 184B, and the plurality of magnetic member mounting portions 184B are arranged at intervals along the circumferential direction of the central structure 184A, for example, the plurality of magnetic member mounting portions 184B are arranged at equal intervals along the circumferential direction of the central structure 184A. The magnetic member mounting portion 184B is configured as a magnetic member mounting groove, and the magnetic member 185 is accommodated in the magnetic member mounting groove 184B. To facilitate the installation of the magnetic member 185, the notch of the magnetic member mounting groove 184B is located at one end of the magnetic member mounting portion away from the central structure 184A.

[0289] like Fig.18 As shown, the wire drum support 183 is provided with a first connecting portion 183C. Fig. 22 As shown, the magnetic conductive member bracket 184 is provided with a second connecting portion 184C. The second connecting portion 184C is used to connect with the first connecting portion 183C, so that the magnetic conductive member bracket 184 is connected to the wire drum bracket 183. The first connecting portion 183C and the second connecting portion 184C are, for example, connected by snap connection, thread connection or adhesive connection. For example, one of the first connecting portion 183C and the second connecting portion 184C is configured as a slot, and the other is configured as a snap-on protrusion, and the snap-on protrusion is used to snap-on with the slot, so that the magnetic conductive member bracket 184 is connected to the wire drum bracket 183.

[0290] In the illustrated embodiment, the first connection portion 183C is configured as a snap-on protrusion, and the second connection portion 184C is configured as a snap-on groove. The first connection portion 183C is disposed at one end of 183A away from the cable drum 180, and the second connection portion 184C is disposed at the central structure 184A. The cable drum assembly 170 is configured such that the central structure 184A is rotatable relative to the central column 183A between a first position and a second position around the axis of the central structure, and when the central structure 184A is located at the first position relative to the central column 183A, the central column 183A and the central structure 184A are disengaged, and when the central structure 184A is located at the second position relative to the central column 183A, the central column 183A and the central structure 184A are engaged with each other.

[0291] Specifically, Fig.18 As shown, at least one snap-fitting protrusion 183C is provided on the outer peripheral surface of the central column 183A. Fig. 22 As shown, the central structure 184A is provided with a mounting hole 184D extending along the axial direction of the central structure 184A for accommodating the central column 183A.

[0292] At least one first slide groove 184E is provided on the inner side wall of the mounting hole 184D. The first slide groove 184E is provided corresponding to the clamping protrusion 183C. The first slide groove 184E extends along the axial direction of the mounting hole 184D. Thus, the first slide groove 184E can accommodate the clamping protrusion 183C, so that the central column 183A can be inserted into the mounting hole 184D, that is, the central structure 184A can be sleeved on the outer periphery of the central column 183A.

[0293] The dimension of the first slide groove 184E along the axial direction of the mounting hole 184D is greater than the dimension of the clamping protrusion 183C along the axial direction of the center column 183A. The clamping groove 184C is arranged corresponding to the first slide groove 184E. The clamping groove 184C is arranged on the inner side wall of the mounting hole 184D, and is connected with the corresponding first slide groove 184E, and extends from the corresponding first slide groove 184E along the circumferential direction of the mounting hole 184D. Thus, the clamping groove 184C and the first slide groove 184E constitute an L-shaped groove on the inner wall of the mounting hole 184D. When the central structure 184A is sleeved on the center column 183A, the clamping protrusion 183C can reach the position of the connection clamping groove 184C of the first slide groove 184E. At this time, the magnetic frame 184 is rotated to make the clamping protrusion 183C enter the clamping groove 184C, that is, the magnetic frame 184 is connected to the wire drum bracket 183. The two can be disconnected by reversing the operation. It can be understood that when the central structure 184A is located in the first position relative to the central column 183A, the central column 183A is located in the mounting hole 184D, and the snap-in protrusion 183C is located in the first slide groove 184E; when the central structure 184A is located in the second position relative to the central column 183A, the central column 183A is located in the mounting hole 184D, and the snap-in protrusion 183C is located in the snap groove 184C.

[0294] Preferably, the mounting hole 184D is a through hole extending in the axial direction of the central structure 184A, and the first slide groove 184E and the clamping groove 184C extend in the axial direction of the central structure 184A to the end surface of the central structure 184A away from the first arm 183B. That is, the first slide groove 184E is a through groove in the axial direction of the central structure 184A, and the clamping groove 184C opens on the surface of the magnetic member bracket 184, so that the first slide groove 184E and the clamping groove 184C are easy to process (for example, easy to be formed by injection molding).

[0295] Preferably, if Fig.17 and Fig.18 As shown, the wire drum support 183 is provided with at least one third connecting portion 183D. Fig.21 and Fig. 22As shown, the magnetic conductive member bracket 184 is provided with the same number of fourth connecting parts 184F as the third connecting parts 183D, and the fourth connecting part 184G is used to connect with the third connecting part 183D. When the central structure 184A is located at the first position relative to the central column 183A (the central column 183A and the central structure 184A are disengaged), the third connecting part 183D and the fourth connecting part 184F are disengaged, and when the central structure 184A is located at the second position relative to the central column 183A (the central column 183A and the central structure 184A are mutually engaged), the third connecting part 183A and the fourth connecting part 184F are mutually connected. That is, when the magnetic conductive member bracket 184 rotates relative to the wire drum bracket 183, the connection and separation of the third connecting part 183A and the fourth connecting part 184F are realized at the same time.

[0296] For example, one of the third connection portion 183D and the fourth connection portion 184F is configured as a clamping portion, and the other is configured as a clamping groove adapted to the clamping portion for accommodating the clamping portion, that is, the clamping portion is screwed into or out of the clamping groove by rotation.

[0297] Specifically, a third connection portion 183D is provided on the side of the first arm 183B away from the winding area, and the fourth connection portion 184F is connected to the magnetic conductive component mounting portion 184B. For example, a connecting rib 184G is provided between two adjacent magnetic conductive component mounting portions 184B, and the fourth connection portion 184F is provided on the connecting rib 184G. The third connection portion 183D is, for example, configured as a snap-fit ​​groove, and the fourth connection portion 184F is configured as a snap-fit ​​portion, and the fourth connection portion 184F protrudes from the connecting rib 184G along the radial direction of the central structure 184A so as to be able to enter the snap-fit ​​groove. Thus, the fourth connection portion 184F can apply a certain pressure to the first arm 183B, so that the first arm 183B can better support the disc winding 182.

[0298] Preferably, the number of first arms 183B included in the cable drum bracket 183 is the same as the number of magnetic member mounting portions 184B included in the magnetic member bracket 184. The cable drum assembly 170 is configured such that when the magnetic member bracket 184 is connected to the cable drum bracket 183, the first arms 183B and the magnetic member mounting portions 184B are alternately arranged along the circumferential direction of the central column 183A. For example, the first arms 183B and the magnetic member mounting portions 184B are alternately arranged at equal intervals along the circumferential direction of the central column 183A.

[0299] In this application, by enabling at least a part of the coil assembly 170 included in the cooking appliance 100 to be rotatable relative to the cooking container 30 about the central axis PA of the coil assembly, and arranging at least one disc-shaped winding 182 included in the coil assembly 170 at intervals in the circumferential direction of the coil assembly 170, the heat distribution inside the cooking container 30 during the cooking process of the cooking appliance 100 can be made more uniform, and the problem of partial overcooking or undercooking of the cooked rice can be improved.

[0300] In all the above preferred embodiments, the processes and steps described are merely examples. Unless adverse effects occur, various processing operations can be performed in an order different from the order of the above processes. The order of the steps of the above processes can also be increased, combined, or deleted according to actual needs.

[0301] When understanding the scope of this application, as used herein, the term "comprising" and its derivatives are intended to be open-ended terms that specify the presence of the recited features, elements, components, groups, wholes, and / or steps, but do not exclude the presence of other unrecited 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.

[0302] As used herein, the term "attached" or "attachment" includes: a configuration in which an element is directly fixed to another element by directly fixing the element to the other element; a configuration in which an element is indirectly fixed to another element by fixing the element to an intermediate member, and the intermediate member is in turn fixed to the other element; and a configuration in which one element is integral with another element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings, such as "connected", "coupled", "joined", "mounted", "adhered", "fixed", and their derivatives. Finally, degree terms such as "substantially", "about", and "approximate" used herein represent the amount of deviation that modifies the term such that the final result is not significantly changed.

[0303] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field of this application. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The features described in one embodiment herein can be applied alone or in combination with other features in another embodiment, unless the feature is not applicable or otherwise stated in that other embodiment.

[0304] 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 connected to the support member, the wire drum assembly has a wire drum assembly central axis, and the wire drum assembly includes: a wire drum rack connected to the support member and rotatable about the central axis of the wire drum assembly, and At least one disc-shaped winding is arranged on the coil frame at intervals along the circumferential direction of the coil frame, the disc-shaped winding is used to constitute a resonant inductor of an electromagnetic heating resonant circuit to generate an alternating magnetic field required for electromagnetic heating after power is turned on, and the disc-shaped winding is coiled around a winding center, and the winding center is offset from the central axis of the coil frame.

2. The cable drum device according to claim 1, It is characterized in that A wire coil through hole extending in the axial direction of the wire coil is provided approximately in the central portion of the wire coil, and the support member is matched with the wire coil through hole, so that the wire coil can rotate relative to the support member around the central axis of the wire coil assembly.

3. The wire drum device according to claim 2, It is characterized in that The wire drum through hole is connected to the support member via a rotary auxiliary structure, wherein the axis of the rotary auxiliary structure coincides with the central axis of the wire drum assembly.

4. The cable drum device according to claim 3, It is characterized in that An annular groove is formed on the outer periphery of the support member for accommodating the rotary auxiliary structure.

5. The wire drum device according to claim 2, It is characterized in that A cylindrical portion is provided at the central portion of the wire coil rack, the wire coil through hole is formed inside the cylindrical portion, and a connecting structure for connecting a driving device is provided at the cylindrical portion, wherein the driving device is used to drive the wire coil rack to rotate around the central axis of the wire coil assembly relative to the support member.

6. The cable drum device according to claim 5, It is characterized in that The first end of the cylindrical portion is connected to the central portion of the cable reel, the second end of the cylindrical portion extends in a direction away from the cable reel, and the central axis of the cylindrical portion coincides with the central axis of the cable reel.

7. The cable drum device according to claim 5, It is characterized in that A second transmission wheel is integrally formed or connected to the connection structure, the second transmission wheel is connected to the cylindrical portion, and the axis of the second transmission wheel coincides with the central axis of the cylindrical portion; or, The driving device includes a second transmission wheel, and the connecting structure is used to connect the second transmission wheel. When the second transmission wheel is connected to the connecting structure, the axis of the second transmission wheel coincides with the central axis of the cylindrical portion.

8. The cable drum device according to claim 5, 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 wire coil rack along the axial direction of the cylindrical portion.

9. The cable drum device according to claim 8, It is characterized in that At least one second connecting body is provided on the inner circumferential surface of the second transmission wheel, the connecting structure includes at least one first connecting body, the first connecting body is correspondingly arranged with the second connecting body and connected to 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 installed at a set position, the first connecting body is engaged with the second connecting body to limit the second transmission wheel from rotating relative to the connecting structure.

10. The cable drum device according to claim 8, It is characterized in that The connection structure includes a plurality of first connection bodies arranged at intervals along the circumferential direction of the cylindrical portion.

11. The cable drum device according to claim 8, 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.

12. The wire drum device according to claim 8, It is characterized in that The connecting structure also includes at least one limit guide structure, which is arranged on the outer circumferential surface of the cylindrical portion, and the side of the limit guide structure 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.

13. The cable drum device according to claim 12, It is characterized in that The position limiting guide structure has a guide slope located on the side facing away from the cylindrical portion, and the guide slope is configured to be inclined relative to the axis of the cylindrical portion, so that the distance between the end of the guide slope 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 guide slope 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 limiting guide structure 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.

14. The cable drum device according to claim 12, It is characterized in that The connection structure includes a plurality of the position limiting guide structures, and the plurality of position limiting guide structures are arranged at intervals along the circumferential direction of the cylindrical portion.

15. The cable drum device according to claim 5, It is characterized in that The coiled wire is disposed on a side of the wire coiling rack facing the second end of the cylindrical portion.

16. The disc-shaped wire winding reel device according to claim 15, It is characterized in that The wire drum assembly further includes a wire drum support on which the coiled wire is wound, and the wire drum support is connected to a side of the wire drum frame facing the second end of the cylindrical portion.

17. The disc-shaped wire winding reel device according to claim 16, It is characterized in that The coiled winding is formed by winding an enameled wire, and the enameled wire comprises: a coiled portion, wound on the coil support, forming an effective resonant inductance of the electromagnetic heating resonant circuit, and two terminal portions, wherein the terminal portions are portions of the enameled wire that are not used to form the effective resonant inductor, and the coiled portion is located between the two terminal portions; The cylindrical portion is provided with a bunching piece for gathering all the terminal portions.

18. The cable drum device according to claim 15, It is characterized in that The support member comprises a first end portion and a second end portion of the support member which are arranged oppositely along the axial direction of the coil frame, wherein the first end portion of the support member corresponds to the first end of the cylindrical portion, and the second end portion of the support member corresponds to the second end of the cylindrical portion. The cable drum device also includes a first blocking member, which is arranged at the first end of the support member, and the first blocking member includes a first blocking portion extending outward in the radial direction of the cable drum assembly to block the cable drum rack from moving in the axial direction of the cable drum assembly toward a direction away from the second end of the support member.

19. The cable drum device according to claim 18, It is characterized in that The first blocking member further includes a first connecting portion, the first connecting portion is connected to the first blocking portion, and the first connecting portion is used to connect the first end portion of the supporting member.

20. The cable drum device according to claim 19, It is characterized in that The first connecting portion is configured as a sleeve extending in the axial direction of the cable drum assembly, and the sleeve is sleeved on the outer periphery of the first end portion of the support member.

21. The cable drum device according to claim 15, It is characterized in that The inner peripheral surface of the wire drum through hole has a blocking surface extending toward the support member along the radial direction of the wire drum through hole, and the blocking surface is used to contact a side of the rotary auxiliary structure facing the first end of the support member.

22. The wire drum device according to claim 3, It is characterized in that The support member comprises: a first support member; and a second support member connected to the first support member, Among them, the end of the first support member used for connecting to the second support member has a first outer diameter, the end of the second support member used for connecting to the first support member has a second outer diameter, the end of the second support member away from the first support member has a third outer diameter, the first outer diameter is greater than the second outer diameter, the third outer diameter is greater than the second outer diameter, and the rotary sub-structure is arranged on the part of the second support member having the second outer diameter.

23. The cable drum device according to claim 3, It is characterized in that The rotary substructure is configured as a rolling rotary substructure or a sliding rotary substructure; and / or The rotary auxiliary structure is made of non-metallic material.

24. The cable drum device according to any one of claims 1 to 23, It is characterized in that The wire reel assembly includes a plurality of the coiled wires, and the plurality of the coiled wires are arranged on the wire reel at equal intervals along the circumferential direction of the wire reel.

25. A cable drum device according to any one of claims 1 to 23, It is characterized in that The axial cross section of the wire coiling rack is a C-shaped structure.

26. The cable drum device according to claim 25, It is characterized in that The coiled winding is arranged outside the C-shaped structure; and / or The cable drum has a radially symmetrical structure.

27. An electromagnetic heating cooking appliance, It is characterized in that include: The wire drum device according to any one of claims 1 to 26; A cooking container for holding food, the cooking container and the wire coiling rack being detachably arranged on one side of the wire coiling rack, the cooking container comprising a ferromagnetic material; and A driving device is connected to the wire coiling frame and is used to drive the wire coiling frame to rotate around the central axis of the wire coil 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 to rotate the cable drum; and The transmission assembly is connected between the driving assembly and the wire coiling frame and is used to transmit the driving force to the wire coiling frame.

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 assembly, and the other end of which is connected to a 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 any one of claims 27 to 32, It is characterized in that The electromagnetic heating cooking appliance is an electric rice cooker, which further comprises a cooker body, wherein the cooker body is provided with a receiving cavity, wherein the wire reel device is arranged in the receiving cavity, and the cooking container is removably placed in the receiving cavity. When the cooking container is located in the accommodating cavity, the wire reel assembly is located at least below the cooking container.

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