Coil tray assembly and cooking utensils

Abstract

This invention provides a coil assembly and a cooking appliance. The coil assembly includes a coil base and a mounting bracket. The coil base has a first surface and a second surface. In the axial section of the coil base, the first surface is arc-shaped and conforms to the shape of the pot wall of the cooking container being heated. The second surface faces the cooking container. At least two mounting brackets are disposed on one side of the first surface, and at least two mounting brackets are spaced apart circumferentially along the coil base. The surface of each mounting bracket opposite to the first surface is an arc-shaped surface of the mounting bracket, which is substantially parallel to the first surface and defines a winding space for accommodating electromagnetic windings. The first surface conforms to the shape of the cooking container, providing an ideal base surface that matches the shape of the pot wall of the cooking container for subsequent installation of the coil winding. The mounting bracket and the first surface define a structurally regular winding space, enabling the coil winding to be precisely positioned and fixed.

Description

Technical Field

[0001] This utility model relates to the field of cooking utensil technology, and more specifically to a coil plate assembly and a cooking utensil. Background Technology

[0002] Cooking appliances can be heated electromagnetically. Traditional coil holders have a single, flat surface shape, which makes it difficult to perfectly match the bottom shape of the container being heated; the magnetic field generated by a single large coil is concentrated in the central area, resulting in a high temperature at the center of the bottom of the pot and a low temperature at the edges.

[0003] Therefore, there is a need to provide a coil plate assembly and a cooking appliance to at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the first aspect of this utility model provides a coil disk assembly, comprising:

[0006] A coil base has a first surface and a second surface that are opposite to each other along its thickness direction. In the axial section of the coil base, the first surface is an arc, which is designed to conform to the shape of the pot wall of the cooking container being heated. The second surface is designed to face the cooking container.

[0007] At least two mounting brackets are disposed on one side of the first surface of the coil base. The at least two mounting brackets are spaced apart circumferentially along the coil base. The surface of each mounting bracket opposite to the first surface is a mounting bracket arc surface. The mounting bracket arc surface is approximately parallel to the first surface and defines a winding space for accommodating electromagnetic winding between the two.

[0008] According to this design, the first surface conforms to the shape of the cooking container's wall, providing an ideal base surface that matches the shape of the cooking container's wall for subsequent installation of the disc-shaped winding. By setting at least two circumferentially spaced fixing brackets, and making the fixing bracket's arc surface approximately parallel to the first surface, a structurally regular winding space is defined between them. This design ensures that the disc-shaped winding housed within this winding space can be precisely positioned and fixed, and the overall structural layout of the assembly is designed for zoned winding and increased heating area.

[0009] Optionally, the coil assembly further includes a disc-shaped winding, which is wound around the winding space formed between the arc surface of the fixing frame and the first surface.

[0010] According to this design, the disc-shaped winding fully utilizes the winding space formed by the first surface and the curved surface of the fixing frame, allowing the disc-shaped winding within this space to form a structure conforming to the shape of the pot wall of the cooking container. This enables the magnetic field generated by the disc-shaped winding to couple more vertically with the bottom of the pot. By winding the disc-shaped winding in sections under multiple fixing frames, a larger heating area is achieved through this sectioned layout, resulting in a more uniform heating effect. The magnetic field energy absorbed by different parts of the cooking container opposite the coil base is essentially the same.

[0011] Optionally, the coil base is provided with a mounting portion;

[0012] The fixing frame further includes a connecting portion, which is connected to the mounting portion; wherein...

[0013] Multiple limiting portions are arranged around the connecting portion and extend radially outward from the connecting portion, and the arc surface of the fixing frame is arranged on the side of the limiting portion facing the coil base.

[0014] According to this solution, the connecting part is directly installed on the mounting part of the coil base, providing the winding axis of the innermost circle of the disc winding, making the winding process simpler, faster, and more accurate, and ensuring the consistency of the disc winding shape.

[0015] Optionally, the connecting part is plugged into and / or connected to the mounting part via a connector; or

[0016] The connecting part is detachably connected to the mounting part.

[0017] According to this solution, the connection between the mounting bracket and the coil base is made more stable by plug-in connection and / or connector connection, which facilitates installation and disassembly, and improves the assembly efficiency and maintenance convenience of the coil assembly.

[0018] Optionally, the mounting portion includes at least one first engaging portion;

[0019] The connecting part includes a second engaging part that is provided corresponding to the first engaging part;

[0020] The first engaging part engages with the corresponding second engaging part.

[0021] According to this solution, the snap-fit ​​connection method is adopted, which has high assembly efficiency. At the same time, the snap-fit ​​connection has a certain strength, which can ensure the stability of the fixing frame during use.

[0022] Optionally, the second engaging portion is configured as a locking hole, the extending direction of which is approximately parallel to the extending direction of the connecting portion.

[0023] According to this solution, when the first engaging part engages into the card hole, it can also limit the circumferential rotation of the fixing frame.

[0024] Optionally, the second engaging portion is provided at circumferential intervals along the connecting portion.

[0025] According to this solution, by setting the second engaging part circumferentially at intervals, the force is evenly distributed when the first engaging part and the second engaging part are engaged, thereby enhancing the stability of the connection between the fixing frame and the coil base.

[0026] Optionally, the coil base further includes a fixing rib, which surrounds the outer circumference of the mounting portion, and the disc-shaped winding is coiled around the fixing rib.

[0027] According to this scheme, the fixing rib provides a winding track for the winding of the disc-shaped wire, which improves the quality and efficiency of the winding of the disc-shaped wire.

[0028] Optionally, the fixing rib is constructed as multiple arc-shaped blocks;

[0029] At least two of the arc-shaped blocks are distributed circumferentially at intervals along the mounting portion, and the concave surface of the arc-shaped blocks faces the mounting portion.

[0030] According to this solution, curved blocks are easier to process, reducing production costs.

[0031] Optionally, the outer diameter d1 of the annular structure defined by the plurality of fixing ribs is greater than or equal to 16 mm.

[0032] According to this scheme, when the outer diameter d1 of the annular structure defined by multiple fixing ribs is greater than or equal to 16mm, the magnetic field of the disc-shaped winding is not excessively concentrated in a small area. The magnetic field lines can diffuse outward more evenly, covering a larger area of ​​the bottom of the pot, thereby ensuring the uniformity of the magnetic field throughout the entire working area and preventing the food inside the pot from heating up too much and the temperature rise too high.

[0033] Optionally, the mounting portion includes a first engaging portion for engaging with the connecting portion, and the first engaging portion is offset from the fixing rib along the circumferential direction of the mounting portion.

[0034] According to this solution, by staggering the first engaging part and the fixing rib, the first engaging part and the fixing rib do not interfere with each other during processing, making it easier to process and shape.

[0035] Optionally, a limiting rib is provided on the side of the fixing frame away from the first surface.

[0036] According to this plan, the limiting ribs strengthen the structure of the fixing frame while avoiding affecting the winding of the disc-shaped winding.

[0037] Optionally, the coil assembly further includes at least two magnetic strips, each of which is connected to each of the retaining frames and located on the side of the retaining frame opposite to the coil winding. In the axial section of the coil base, the magnetic strips are located in the space surrounded by the limiting ribs, and the surface of the retaining frame in close contact with the magnetic strips is planar.

[0038] According to this solution, the magnetic strip, in its assembled state, meets the requirements for the working performance of disc-shaped winding in terms of distance.

[0039] Optionally, the mounting bracket is provided with heat dissipation holes.

[0040] According to this solution, the heat generated by the disc-shaped winding is dissipated in a timely manner through heat dissipation holes.

[0041] Optionally, the spacing d2 between two adjacent fixing frames in the outer circumferential direction is not less than 6 mm.

[0042] Optionally, the coil assembly further includes an intermediate fixing part, which is disposed on one side of the first surface of the coil base and located at the center of the coil base. A plurality of fixing brackets surround the outer periphery of the intermediate fixing part, and the distance d3 between the outer periphery edge of the intermediate fixing part and each fixing bracket in the radial direction of the coil assembly is not less than 6 mm.

[0043] According to this solution, the 6mm-8mm spacing provides sufficient operating space for the winding machine, ensuring that the winding process can proceed smoothly, improving the feasibility and production efficiency of the winding process, and also facilitating heat dissipation of the disc winding.

[0044] Optionally, the coil holder has a central axis;

[0045] The coil disk assembly also includes:

[0046] An intermediate fixing part for winding a coil, the axis of the intermediate fixing part being substantially coincident with the central axis, and each of the fixing frames surrounding the circumferential outer side of the intermediate fixing part; and / or

[0047] An outer peripheral fixing part is used for winding the side coil, and the outer peripheral fixing part is located on the circumferential outer side of the coil base.

[0048] According to this design, the middle fixing part and the fixing frame are nested inside and outside, reducing local concentration or sparseness of the magnetic field, achieving a more uniform heating effect and improving cooking quality. The outer fixing part can heat the sides of the inner pot, expanding the heating range and meeting different cooking needs.

[0049] The second aspect of this utility model provides a cooking utensil, comprising:

[0050] A cooking container, wherein at least a portion of the bottom of the cooking container is configured to be arc-shaped;

[0051] The aforementioned coil assembly is used to heat the cooking container from below, wherein the arc of the first surface of the coil base conforms to the arc of the cooking container.

[0052] According to this solution, by using the aforementioned coil assembly with uniform heating effect, the cooking appliance can heat the inner pot more evenly, making the food inside the inner pot heated more evenly, improving cooking quality and enhancing user experience. Attached Figure Description

[0053] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0054] Figure 1 This is a bottom view of a preferred embodiment of the coil assembly of the present invention.

[0055] Figure 2 For along Figure 1 A schematic diagram of the cross-section intercepted by the centerline AA;

[0056] Figure 3 This is a bottom view of a preferred embodiment of the coil base of the present invention.

[0057] Figure 4 For along Figure 3 A schematic diagram of the cross-section intercepted by the centerline BB;

[0058] Figure 5 This is a three-dimensional schematic diagram of a coil base according to a preferred embodiment of the present invention;

[0059] Figure 6 This is a three-dimensional schematic diagram of a fixing frame according to a preferred embodiment of the present invention;

[0060] Figure 7 This is a bottom view of a preferred embodiment of the fixing frame of the present invention;

[0061] Figure 8 For along Figure 7 A schematic diagram of the cross-section intercepted by the centerline CC;

[0062] Figure 9 For along Figure 7A schematic diagram of the cross-section intercepted by the centerline DD;

[0063] Figure 10 This is a front view schematic diagram of a preferred embodiment of the coil assembly and the inner pot of this utility model; and

[0064] Figure 11 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention, showing the coil assembly and the inner pot.

[0065] Explanation of reference numerals in the attached figures

[0066] 100: Coil base

[0067] 101: First Surface

[0068] 102: Second Surface

[0069] 110: Installation Department

[0070] 111: Fixing part

[0071] 112: First Card Section

[0072] 120: Fixing reinforcement

[0073] 130: Intermediate fixing part

[0074] 140: Peripheral fixing part

[0075] 150: Mounting hole

[0076] 160: First fixed part

[0077] 161: First fixing hole

[0078] 162: Second fixing part

[0079] 163: Second fixing hole

[0080] 170: Thread buckle

[0081] 180: Flange

[0082] 200: Fixture

[0083] 201: Curved surface of the fixed frame

[0084] 202: Winding Space

[0085] 210: Limiting part

[0086] 211: Limiting reinforcement bar

[0087] 212: Heat dissipation holes

[0088] 220: Connecting part

[0089] 230: Second Card Combination

[0090] 300: Disc-shaped winding

[0091] 400: Pot Inner Layer

[0092] 410: Pot wall Detailed Implementation

[0093] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0094] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0095] In this document, ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0096] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, and not to limit it.

[0097] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0098] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0099] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0100] This utility model provides a cooking utensil. The cooking utensil includes a lid and a pot body. The pot body is used for cooking food, and the lid is used to cover the pot body. For example, the lid is connected to the pot body in an openable and closable manner to cover the pot body. When the lid covers the pot body, a cooking space is formed between the lid and the pot body. The pot body has a cylindrical inner pot storage section. The inner pot 400 can be fixedly installed in the inner pot storage section, or it can be freely placed into or removed from the inner pot storage section to facilitate cleaning of the inner pot 400. The inner pot 400 is usually made of metal and has a circular opening on its upper surface for holding materials to be heated, such as rice or soup. The pot body includes a heating device for heating the inner pot 400.

[0101] The cooking appliance according to this utility model can be a rice cooker, electric pressure cooker or other cooking appliance with electromagnetic heating function, and in addition to cooking rice, the cooking appliance can also have various functions such as cooking porridge.

[0102] An electromagnetic heating device can be installed inside the pot. The electromagnetic heating device includes a coil assembly. The coil assembly includes a coil base 100. The coil base 100 has a first fixing part 160 and a second fixing part 162. The first fixing part 160 is constructed as an ear plate structure extending from the main body of the coil base 100. The first fixing part 160 has a through hole 161. A nut seat or buckle is provided at a corresponding position on the pot body. The first fixing hole 161 is used to pass through bolts, buckles, or other fasteners to fix the coil assembly to the pot body. The second fixing part 162 has a second fixing hole 163. Optionally, the second fixing hole 163 is an internally threaded hole. A through hole or countersunk hole is provided at a corresponding position on the pot body. A bolt passes through one side of the pot body and is directly screwed into the internal thread of the second fixing hole 163 for fixation, thereby fixing the coil assembly to the pot body. Optionally, multiple first fixing parts 160 are provided around the periphery of the coil base 100. Optionally, a plurality of second fixing parts 162 are arranged at circumferential intervals along the coil base 100.

[0103] Optionally, a mounting hole 150 is provided at the center of the coil base 100 for mounting a temperature sensing element. The mounting hole 150 extends through the thickness of the coil base 100. The temperature sensing element can be mounted to the mounting hole 150 and directly or indirectly contact the bottom of the pot 400 to collect temperature data of the cooking space in real time.

[0104] The coil assembly is used to heat the cooking container, optionally a pot inner liner 400. Optionally, the coil assembly is located below the pot inner liner 400 for heating the food inside. The coil assembly can also be located on the side of the pot body. The bottom and side coil assemblies can work individually or together to heat the bottom and sides of the pot inner liner, expanding the heating range and meeting the heating needs of different cooking methods and foods, thus improving the versatility and practicality of the cooking appliance. The pot inner liner 400 is made of a magnetically conductive material. The pot inner liner 400 is detachably disposed within the magnetically inductive area of ​​the electromagnetic heating device.

[0105] Optionally, the coil assembly includes a disc-shaped winding 300. When the coil assembly is energized, the disc-shaped winding 300 generates an alternating magnetic field, which can induce eddy currents in the pot liner 400, thereby heating the pot liner 400. (Refer to...) Figure 10 and Figure 11 The disc-shaped winding 300 can be correspondingly set in the bottom, side and other areas of the pot 400 to achieve heating of the bottom and side of the pot 400.

[0106] The following is combined with Figures 1 to 11 This invention describes a coil disk assembly provided by the present invention.

[0107] The coil holder 100 has a first surface 101 and a second surface 102 arranged opposite to each other along its thickness direction. In the axial section of the coil holder 100, the first surface 101 is an arc, which is designed to conform to the shape of the pot wall 410 of the inner pot 400, and the second surface 102 is oriented towards the inner pot 400. The first surface 101 can be adapted to the curvature of the pot wall 410 of the inner pot 400, so that the strength and direction of the magnetic field in various regions of the bottom of the inner pot 400 are more consistent. The coil assembly also includes a fixing frame 200. At least two fixing frames 200 are disposed on one side of the first surface 101 of the coil holder 100, and at least two fixing frames 200 are spaced apart circumferentially along the coil holder 100. The surface of each fixing frame 200 opposite to the first surface 101 is a fixing frame arc surface 201, which is generally parallel to the first surface 101 and defines a winding space 202 for accommodating the electromagnetic winding between them. According to this solution, by conforming the shape of the first surface 101 to the shape of the pot wall 410 of the inner pot 400, an ideal base surface that matches the shape of the pot wall 410 of the inner pot 400 is provided for the subsequent installation of the disc-shaped winding 300. By setting at least two circumferentially spaced fixing brackets 200, and making the fixing bracket arc surface 201 of each fixing bracket 200 approximately parallel to the first surface 101, a winding space 202 with a regular structure and consistent shape is defined between them. This solution ensures that the disc-shaped winding 300 housed in the winding space 202 can be accurately positioned and fixed, and the structural layout of the entire assembly is prepared for partitioned winding and increased heating area.

[0108] The coil assembly also includes a disc-shaped winding 300, which is wound in the winding space 202 formed between the arc surface 201 of the fixing frame and the first surface 101. In this design, the first surface 101 is parallel to the pot liner 400, allowing the magnetic field generated by the disc-shaped winding 300 to be better vertically coupled to the bottom of the pot liner 400. The parallelism between the arc surface 201 of the fixing frame and the first surface 101 ensures the uniformity of the winding of the disc-shaped winding 300, thereby making the magnetic field generated by the disc-shaped winding 300 spatially uniform. By setting at least two fixing frames 200 to form multiple winding spaces 202, the multiple disc-shaped windings 300 are arranged in sections, resulting in a larger heating area and a more uniform heating effect. In this way, the magnetic field energy absorbed by each part of the bottom of the pot liner 400 is basically the same, achieving uniform heating.

[0109] In this design, at least two mounting brackets 200 are spaced apart circumferentially along the coil base 100. For example, the number of mounting brackets 200 can be two, three, four, five, six, seven, eight, nine, or ten or more. In the illustrated embodiment, it is preferable to have six mounting brackets 200, spaced apart circumferentially along the coil base 100. This application enables multi-point heating of the cooking appliance by providing multiple mounting brackets 200 on the coil base 100 and mounting disc-shaped windings 300 on these brackets. By arranging the multiple mounting brackets 200 at equal intervals circumferentially along the coil base 100, the multiple disc-shaped windings 300 allow for uniform heating of multiple locations within the inner pot 400.

[0110] The mounting bracket 200 also includes a connecting portion 220. The coil can be wound around the connecting portion 220 within the winding space 202 to form a disc-shaped winding 300. The mounting bracket 200 also includes a limiting portion 210. The arcuate surface 201 of the mounting bracket is provided on the side of the limiting portion 210 facing the coil disc base 100. Multiple limiting portions 210 are provided around the connecting portion 220 and extend outward from the connecting portion 220. The limiting portions 210 are spaced apart circumferentially along the connecting portion 220. For example, the number of limiting portions 210 can be two, three, four, five, or six or more. In the illustrated embodiment, it is preferable to have four limiting portions 210.

[0111] The coil holder 100 also includes a mounting portion 110. The fixing frame 200 is connected to the mounting portion 110 via a connecting portion 220. The connecting portion 220 is directly mounted on the mounting portion 110 of the coil holder 100, providing the winding axis for the disc-shaped winding 300. Multiple limiting portions 210 are arranged around the connecting portion 220, forming a winding space 202 for the disc-shaped winding 300 to be wound, together with the first surface 101 of the coil holder 100. During winding, the disc-shaped winding 300 can be tightly attached to the connecting portion 220 and wound along this winding space 202, making the winding process simpler, faster, and more accurate, ensuring the consistency of the disc-shaped winding 300's shape. This design aligns the mounting portion 110 with the connecting portion 220 located in the central region of the fixing frame 200, allowing operators to more easily position and install the coil using the central region as a reference, improving installation accuracy and efficiency.

[0112] In this design, the mounting bracket 200 and the coil base 100 are connected via the mounting portion 110 and the connecting portion 220. The connection methods of the mounting portion 110 and the connecting portion 220 include, but are not limited to, plug-in connection, connection via a connector, and detachable connection.

[0113] Optionally, the mounting portion 110 includes a fixing portion 111. The number of fixing portions 111 is the same as the number of connecting portions 220, and they correspond one-to-one. The connecting portion 220 is plugged into and / or connected to the fixing portion 111 via a connector. Exemplarily, the fixing portion 111 is constructed as a hollow columnar structure, and a thread is provided at the center of the fixing portion 111. The shape of the connecting portion 220 matches that of the fixing portion 111. The connecting portion 220 is plugged into and connected to the fixing portion 111 via bolts.

[0114] Optionally, the mounting portion 110 includes a first engaging portion 112. The mounting bracket 200 is provided with a second engaging portion 230. When the mounting bracket 200 is mounted to the coil base 100, the first engaging portion 112 and the second engaging portion 230 are engaged and connected. The shape and structure of the second engaging portion 230 match those of the first engaging portion 112 to ensure a tight engagement.

[0115] Optionally, the first engaging portion 112 has a hook-shaped end and a certain degree of elasticity or deformability so that it can smoothly complete the engaging action when engaging with the second engaging portion 230, and maintain a stable connection state after engaging.

[0116] Optionally, the second engaging portion 230 is configured as a locking hole. With the mounting bracket 200 installed on the coil base 100, the first engaging portion 112 engages into the locking hole. Optionally, the through direction of the locking hole is approximately parallel to the extending direction of the connecting portion 220. In this embodiment, when the first engaging portion 112 engages into the locking hole, it also limits the circumferential rotation of the mounting bracket 200.

[0117] Optionally, at least two second engaging portions 230 are spaced apart circumferentially along the connecting portion 220. For example, the number of second engaging portions 230 is two, three, four, or more. In the illustrated embodiment, it is preferable to set the number of second engaging portions 230 to two, and the connecting portions 220 of the two second engaging portions 230 are spaced apart circumferentially. The number of first engaging portions 112 and second engaging portions 230 is the same and they correspond one-to-one. By circumferentially spacing the second engaging portions 230, the force is evenly distributed when the first engaging portions 112 and second engaging portions 230 engage. Simultaneously, the cooperation of multiple second engaging portions 230 and first engaging portions 112 allows for fixation of the fixing frame 200 from multiple directions, further enhancing the stability of the connection between the fixing frame 200 and the coil base 100, and preventing the fixing frame 200 from loosening or shifting during use.

[0118] In this design, to facilitate the winding of the disc-shaped winding 300, the coil assembly also includes a fixing rib 120, which surrounds the circumferential outer side of the mounting portion 110. In this design, the central axis of the fixing rib 120 is approximately parallel to the connecting portion 220, allowing the disc-shaped winding 300 to wind around the fixing rib 120 in the winding space 202 with the connecting portion 220 as its axis. The fixing rib 120 provides a winding track for the disc-shaped winding 300. When winding the disc-shaped winding 300, the operator can wind it systematically along the contour of the fixing rib 120.

[0119] The fixing rib 120 is constructed as an arc-shaped block. The shape of the arc-shaped block can better guide the disc-shaped winding 300 to wind in an orderly manner along a predetermined path, so that the magnetic field generated by the disc-shaped winding 300 is more uniformly distributed in space. At least two arc-shaped blocks are distributed circumferentially, wherein the concave surface of the arc-shaped blocks faces the mounting part 110. The arc-shaped blocks are easier to process (e.g., easier to form by injection molding) compared to the entire annular fixing rib 120.

[0120] The fixing rib 120 encloses and forms an installation area. When the fixing frame 200 is installed on the coil base 100, the mounting part 110, the connecting part 220, and the second engaging part 230 are all located within this installation area. That is, the mounting part 110 and the fixing rib 120 are offset radially, and the fixing part 111 of the first engaging part 112 is also offset radially. This ensures that the fixing frame 200 is connected to the coil base 100 without affecting the winding of the disc-shaped winding 300.

[0121] Optionally, the first engaging portion 112 is offset from the fixing rib 120 along the circumferential direction of the mounting portion 110. By offsetting the first engaging portion 112 from the fixing rib 120, the first engaging portion 112 and the fixing rib 120 are easier to process and form.

[0122] Reference Figure 3 Optionally, the outer diameter d1 of the annular structure formed by multiple fixing ribs 120 is greater than or equal to 16 mm. The outer diameter d1 can be, but is not limited to, 16 mm, 18 mm, 20 mm, 25 mm, 30 mm, etc. If the outer diameter d1 is too small, the magnetic field generated by the disc-shaped winding 300 is concentrated, resulting in heating over a very small area. The food inside the pot 400 cannot quickly absorb heat, leading to concentrated heating and a high temperature rise. When the minimum outer diameter d1 of the annular structure of the fixing ribs 120 is greater than or equal to 16 mm, the disc-shaped winding 300 can be distributed more evenly in space, preventing the generated magnetic field from being excessively concentrated in a small area. The magnetic field lines can diffuse outward more evenly, covering a larger area of ​​the bottom of the pot 400, thus ensuring the uniformity of the magnetic field throughout the entire area of ​​action.

[0123] Reference Figure 1Optionally, the spacing d2 between two adjacent fixing brackets 200 in the outer circumferential direction is not less than 6mm, preferably 6mm to 8mm. The spacing d2 can be, but is not limited to, 6mm, 7mm, or 8mm.

[0124] Optionally, the coil assembly further includes a central fixing portion 130, which is disposed on one side of the first surface of the coil base and located at the center of the coil base, such that a plurality of fixing brackets 200 surround the outer periphery of the central fixing portion 130. The radial distance d3 between the outer periphery of the central fixing portion 130 and each fixing bracket 200 in the coil assembly is not less than 6 mm, preferably 6 mm to 8 mm. The distance d3 can be, but is not limited to, 6 mm, 7 mm, or 8 mm.

[0125] When the fixed frame 200 winds the disc-shaped winding 300, the maximum outer diameter of the disc-shaped winding 300 is approximately the same as the outer diameter of the fixed frame 200. Similarly, when the intermediate fixed part 130 winds the disc-shaped winding 300, the maximum outer diameter of the disc-shaped winding 300 is approximately the same as the outer diameter of the intermediate fixed part 130. Therefore, in the coil assembly, the disc-shaped winding 300 is directly wound on the fixed frame 200 or the intermediate fixed part 130. The distance between the outer peripheral edges of adjacent fixed frames 200, or the distance between the outer peripheral edges of the fixed frame 200 and the outer peripheral edges of the intermediate fixed part 130, directly determines the spacing between adjacent disc-shaped winding 300 areas. Both spacing d2 and spacing d3 are not less than 6mm, providing sufficient operating space for the winding machine, ensuring smooth winding, and improving the feasibility and production efficiency of the winding process.

[0126] The coil assembly also includes at least two magnetic strips (not shown in the figure), each magnetic strip being connected to each retainer 200 and located on the side of the retainer 200 opposite to the coil winding 300. In the axial section of the coil base 100, the magnetic strips are located in the space surrounded by the limiting ribs 211, and the surface of the retainer 200 in close contact with the magnetic strips is flat, so that the distance between the magnetic strips in the assembled state meets the requirements of the coil's working performance.

[0127] To ensure the structural strength of the fixing frame 200, a limiting rib 211 is provided on the side of the fixing frame 200 away from the first surface 101. This strengthens the structural strength of the fixing frame 200 while avoiding interference with the winding of the disc-shaped winding 300. Optionally, the limiting rib 211 is located on the outer circumferential edge of the limiting portion 210. The limiting rib 211 enhances the structural rigidity of the limiting portion 210, preventing deformation or damage.

[0128] To enhance heat dissipation of the disc-shaped winding 300 during operation, the mounting bracket 200 is provided with heat dissipation holes 212. These holes dissipate the heat generated by the disc-shaped winding 300 in a timely manner, thereby ensuring stable current and power of the disc-shaped winding 300.

[0129] Optionally, the heat dissipation hole 212 is staggered from the limiting rib 211. This staggered arrangement ensures that the limiting rib 211 can fully perform its function of enhancing structural strength, while also improving heat dissipation. Optionally, the heat dissipation hole 212 is located in the middle of the limiting portion 210.

[0130] Optionally, the heat dissipation hole 212 is opened in the limiting part 210, that is, the heat dissipation hole 212 is located in the area surrounded by the limiting rib 211, that is, at least part of the magnetic strip and the disc-shaped winding 300 are arranged opposite to each other through the heat dissipation hole 212 to improve the magnetic field coupling efficiency.

[0131] Optionally, the coil assembly also includes a central fixing part 130, which is mounted to the first surface 101. The axis of the central fixing part 130 largely coincides with the central axis of the coil base 100. Each fixing bracket 200 surrounds the circumferential outer side of the central fixing part 130, forming a nested structure. This layout allows for a rational spatial allocation and utilization of the various components of the coil assembly, thereby further adjusting and optimizing the magnetic field, reducing local concentration or sparseness of the magnetic field, achieving a more uniform heating effect, and improving cooking quality.

[0132] Optionally, the coil assembly further includes an outer peripheral fixing portion 140 for winding the side coil. The outer peripheral fixing portion 140 is mounted to the first surface 101, and the axis of the outer peripheral fixing portion 140 largely coincides with the central axis of the coil base 100. The outer peripheral fixing portion 140 surrounds the circumferential outer side of each fixing bracket 200. Optionally, the disc-shaped winding 300 of the outer peripheral fixing portion 140 heats the side of the pot liner 400.

[0133] Optionally, a flange 180 is provided at the top of the coil assembly. The flange 180 and the outer peripheral fixing portion 140 are spaced apart along the height direction of the cooking appliance. In the projection along the height direction of the cooking appliance, at least a portion of the flange 180 coincides with the outer peripheral fixing portion 140 to form a mounting structure for mounting the upper and lower limits of the coil 300.

[0134] Optionally, the coil assembly includes a wire clip 170 for securing the end of the coiled wire 300. Optionally, the wire clip 170 is located on the flange 180.

[0135] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0136] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A coil disk assembly, characterized in that, include: A coil holder has a first surface and a second surface arranged opposite to each other along its thickness direction. In the axial section of the coil holder, the first surface is an arc, which is designed to conform to the shape of the pot wall of the cooking container being heated. The second surface is designed to face the cooking container. At least two mounting brackets are disposed on one side of the first surface of the coil base. The at least two mounting brackets are spaced apart circumferentially along the coil base. The surface of each mounting bracket opposite to the first surface is a mounting bracket arc surface. The mounting bracket arc surface is approximately parallel to the first surface and defines a winding space for accommodating electromagnetic winding between the two.

2. The coil disk assembly according to claim 1, characterized in that, The coil assembly further includes a disc-shaped winding, which is wound around the winding space formed between the arc surface of the fixing frame and the first surface.

3. The coil disk assembly according to claim 2, characterized in that, The coil base is provided with a mounting part; The mounting bracket also includes: The connecting part is connected to the mounting part; A plurality of limiting portions are arranged around the connecting portion and extend radially outward from the connecting portion, and the arc surface of the fixing frame is arranged on the side of the limiting portion facing the coil base.

4. The coil disk assembly according to claim 3, characterized in that, The connecting part is plugged into and / or connected to the mounting part via a connector; or The connecting part is detachably connected to the mounting part.

5. The coil disk assembly according to claim 3, characterized in that, The mounting part includes at least one first engaging part; The connecting part includes a second engaging part that is provided corresponding to the first engaging part; The first engaging part engages with the corresponding second engaging part.

6. The coil disk assembly according to claim 5, characterized in that, The second engaging part is constructed as a locking hole, and the extending direction of the locking hole is approximately parallel to the extending direction of the connecting part; Alternatively, the second engaging portion is spaced circumferentially along the connecting portion.

7. The coil assembly according to any one of claims 3 to 6, characterized in that, The coil base also includes a fixing rib, which surrounds the outer periphery of the mounting portion, and the disc-shaped winding is coiled around the fixing rib.

8. The coil disk assembly according to claim 7, characterized in that, The fixing rib is constructed of multiple arc-shaped blocks; At least two of the arc-shaped blocks are distributed circumferentially at intervals along the mounting portion, and the concave surface of the arc-shaped blocks faces the mounting portion.

9. The coil disk assembly according to claim 8, characterized in that, The outer diameter d1 of the annular structure defined by the multiple fixing ribs is greater than or equal to 16 mm.

10. The coil assembly according to any one of claims 3 to 6, characterized in that, The coil base also includes fixing ribs; The mounting part includes a first engaging part for engaging with the connecting part, and the first engaging part is offset from the fixing rib along the circumferential direction of the mounting part.

11. The coil assembly according to any one of claims 1 to 6, characterized in that, The fixing frame is provided with a limiting rib on the side away from the first surface.

12. The coil disk assembly according to claim 11, characterized in that, The coil assembly further includes at least two magnetic strips, each of which is connected to each of the fixing frames and located on the side of the fixing frame opposite to the coil winding. In the axial section of the coil base, the magnetic strip is located in the space surrounded by the limiting ribs, and the surface of the fixing frame that is close to the magnetic strip is a plane.

13. The coil assembly according to any one of claims 1 to 6, characterized in that, The mounting bracket has heat dissipation holes.

14. The coil assembly according to any one of claims 1 to 6, characterized in that, The spacing d2 between two adjacent fixing frames in the outer circumferential direction is not less than 6 mm; and / or The coil assembly further includes an intermediate fixing part, which is disposed on one side of the first surface of the coil base and located at the center of the coil base. A plurality of fixing brackets surround the outer periphery of the intermediate fixing part, and the distance d3 between the outer periphery edge of the intermediate fixing part and each fixing bracket in the radial direction of the coil assembly is not less than 6 mm.

15. The coil assembly according to any one of claims 1 to 5, characterized in that, The coil base has a central axis; The coil disk assembly also includes: An intermediate fixing part for winding a coil, the axis of the intermediate fixing part being substantially coincident with the central axis, and each of the fixing frames surrounding the circumferential outer side of the intermediate fixing part; and / or An outer peripheral fixing part is used for winding the side coil, and the outer peripheral fixing part is located on the circumferential outer side of the coil base.

16. A cooking utensil, characterized in that, include: A cooking container, wherein at least a portion of the bottom of the cooking container is configured to be arc-shaped; The coil assembly according to any one of claims 1 to 15 is used for heating the cooking container below it, wherein, The arc of the first surface of the coil base conforms to the arc of the cooking container.

Images