Heating assembly and cooking appliance

Abstract

The application provides a heating assembly and a cooking appliance. The heating assembly comprises a coil disc and a magnetosensitive assembly. The magnetosensitive assembly is arranged on the coil disc. The magnetosensitive assembly comprises at least three magnetosensitive sheets. The at least three magnetosensitive sheets are arranged at intervals along the circumference of the coil disc. The anti-deformation capability of the magnetosensitive assembly in the heating assembly is good.

Description

Technical Field

[0001] This application relates to the field of cooking appliance technology, and more particularly to a heating component and a cooking appliance. Background Technology

[0002] An induction cooker is a common cooking appliance with advantages such as high heating efficiency, fast heating speed, and safe use of electric heating.

[0003] Traditional induction cookers cannot directly heat non-magnetic cookware. Related technologies employ a magnetic plate on the coil. This magnetic plate senses the magnetic field of the coil and generates eddy currents, which in turn generate heat. This heat is then radiated infraredly to the non-magnetic cookware, thus heating it.

[0004] However, due to the high temperature of the magnetic plate, it is prone to deformation. Utility Model Content

[0005] Based on this, this application provides a heating component and a cooking appliance, which improves the deformation resistance of the magnetic sensing component by setting the magnetic sensing component as multiple independent magnetic sensing sheets.

[0006] In a first aspect, this application provides a heating assembly, comprising:

[0007] Coil disc;

[0008] A magnetic sensing component is disposed on a coil disk and includes at least three magnetic sensing sheets, which are spaced apart circumferentially along the coil disk.

[0009] The heating assembly provided in this application expands the application range of cooking appliances by using a magnetic sensing component to generate heat by inducing eddy currents in an alternating magnetic field, thereby heating the cookware with infrared radiation. By setting the magnetic sensing component to at least three independent magnetic sensing sheets, the planar dimensions of each individual magnetic sensing sheet are reduced, thereby reducing the aspect ratio of each individual magnetic sensing sheet and increasing the rigidity of each individual magnetic sensing sheet. This improves the deformation resistance of the magnetic sensing assembly at high temperatures, thereby mitigating problems such as oxidation, abnormal noise, and power reduction caused by deformation of the magnetic sensing assembly.

[0010] In one possible implementation, the magnetic sensing sheet is circular, and the diameter D and thickness H of the magnetic sensing sheet satisfy: 50≤D / H≤1000.

[0011] This helps to reduce the aspect ratio of a single magnetic sensing sheet, which in turn helps to increase the stiffness of the magnetic sensing sheet, thereby improving the deformation resistance of the magnetic sensing assembly under temperature sensing, and also helps to increase the area of ​​the magnetic sensing assembly, which in turn helps to increase the power of the magnetic sensing assembly.

[0012] In one possible implementation, the diameter D of the magnetic induction sheet satisfies: D≤70mm.

[0013] In this way, the planar dimensions of a single magnetic sensing sheet can be effectively reduced, thereby reducing the aspect ratio of the single magnetic sensing sheet and increasing the stiffness of the single magnetic sensing sheet. This improves the deformation resistance of the magnetic sensing assembly at high temperatures and suppresses the deformation of the magnetic sensing assembly.

[0014] In one possible implementation, the thickness H of the magnetic induction sheet satisfies: 0.2 mm ≤ H ≤ 1.5 mm.

[0015] This helps to reduce the aspect ratio of the magnetic sensing sheet, which in turn helps to increase the stiffness of the magnetic sensing sheet, thereby improving the deformation resistance of the magnetic sensing component at high temperatures. Furthermore, it helps to improve the heat conduction efficiency of the magnetic sensing component, thereby improving the heating efficiency of the heating component.

[0016] In one possible implementation, at least three magnetically sensing sheets are tangent to an outer circle with radius R centered at the center of the coil disk;

[0017] The sum of the areas S1 of at least three magnetic plates and the area S2 of the circumcircle satisfy: S1 / S2≥0.5.

[0018] This reduces the area of ​​the blank space, thereby increasing the working area of ​​the magnetic sensing component and thus improving its power.

[0019] In one possible implementation, the heating assembly further includes a heat insulation element disposed on the coil disc, the heat insulation element having a heat insulation groove, and the magnetic sensing assembly disposed on the heat insulation groove.

[0020] The heat insulation groove includes a first sidewall surrounding the outer periphery of the magnetic sensing component, and at least three magnetic sensing sheets are tangent to the first sidewall.

[0021] In this way, the area ratio of the magnetic sensing component on the bottom wall of the heat insulation groove can be increased, thereby increasing the working area of ​​the magnetic sensing component without increasing the bottom area of ​​the heat insulation groove, which is beneficial to improving the power of the magnetic sensing component.

[0022] In one possible implementation, the coil disk includes a disk frame and a coil wound on the disk frame. The coil includes an inner coil and an outer coil wound coaxially, and at least a portion of the outer coil and the inner coil are offset along the axial direction of the coil disk.

[0023] The magnetic sensing component is located on one axial side of the inner coil and on the radial inner side of the outer coil.

[0024] In this way, the tray can be used to install the coil. When the coil is energized, it can generate an alternating magnetic field, which in turn causes the magnetic sensing component to generate eddy currents and heat up in the alternating magnetic field. Furthermore, since the magnetic sensing component is located on one side of the inner coil, the inner coil can generate an alternating magnetic field at the bottom of the magnetic sensing component. The magnetic sensing component is located on the radial inner side of the outer coil, and the outer coil can generate an alternating magnetic field on the outer periphery of the magnetic sensing component. The magnetic fields of the inner coil and the outer coil act together on the magnetic sensing component, which can make the heat generation in various parts of the magnetic sensing sheet more uniform, thereby improving the working efficiency of the magnetic sensing sheet and preventing the magnetic sensing sheet from deforming due to uneven temperature.

[0025] In one possible implementation, at least one magnetically sensitive sheet has a flange on its outer peripheral edge.

[0026] Thus, compared to a flat magnetic sensing sheet, a magnetic sensing sheet with a flange has a larger moment of inertia, which helps to improve the stiffness of the magnetic sensing sheet and thus helps to suppress the deformation of the magnetic sensing sheet at high temperatures.

[0027] In one possible implementation, at least one magnetically sensitive sheet is provided with a concave-convex structure that extends radially along the magnetically sensitive sheet; and / or, the concave-convex structure extends circumferentially along the magnetically sensitive sheet.

[0028] Thus, for planar magnetic induction sheets, magnetic induction sheets with concave and convex structures have a larger moment of inertia, which is beneficial to improving the stiffness of the magnetic induction sheet and thus helping to suppress the deformation of the magnetic induction sheet at high temperatures.

[0029] Secondly, this application provides a cooking appliance, including a housing and the heating component provided in the first aspect, wherein the heating component is housed in the housing.

[0030] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the heating components and cooking appliances provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the heating assembly provided in an embodiment of this application;

[0033] Figure 2 for Figure 1 Top view;

[0034] Figure 3 Another structural schematic diagram of the heating assembly provided in the embodiments of this application;

[0035] Figure 4 for Figure 1 AA-direction cross-sectional view;

[0036] Figure 5 for Figure 1 Exploded view;

[0037] Figure 6 This is a schematic diagram of the structure of the magnetic sensing component in the heating assembly provided in the embodiments of this application;

[0038] Figure 7 for Figure 6 Schematic diagram of the structure of the medium-inductance magnetic sheet;

[0039] Figure 8 This is another structural schematic diagram of the magnetic sensing component in the heating assembly provided in the embodiments of this application;

[0040] Figure 9 for Figure 8 A schematic diagram of the structure of a medium-induction magnetic sheet.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100 - Coil plate; 110 - Plate frame; 120 - Coil; 121 - Inner coil; 122 - Outer coil; 130 - Magnetic strip;

[0043] 200 - Magnetic sensing component; 210 - Magnetic sensing sheet; 211 - Flanged edge; 212 - Concave-convex structure;

[0044] 300 - Thermal insulation component; 310 - Thermal insulation groove; 311 - First sidewall; 312 - Second sidewall; 300a - Thermal insulation ring; 300b - Outer thermal insulation flange; 300c - Inner thermal insulation flange. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0048] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0049] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0050] In related technologies, a magnetic plate is placed on a coil. The magnetic plate senses the magnetic field of the coil and generates eddy currents, which in turn generate heat. This heat is then radiated infraredly to non-magnetic cookware to heat it. However, due to the high temperature of the magnetic plate, it is prone to thermal stress, and the uneven heat distribution leads to uneven thermal stress. This uneven thermal stress can cause the magnetic plate to deform, resulting in problems such as abnormal noise, oxidation, and reduced power.

[0051] In view of the above problems, this application provides a heating component and a cooking appliance. By dividing the magnetic sensing component into multiple magnetic sensing sheets, the aspect ratio of a single magnetic sensing sheet is reduced, thereby improving the deformation resistance of the magnetic sensing sheet at high temperatures, and thus improving problems such as abnormal noise, oxidation and power reduction of the magnetic sensing component.

[0052] The specific implementation of the heating component and cooking device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0053] Reference Figure 1 As shown in the embodiment of this application, the cooking appliance includes a housing and a heating component, with the heating component housed in the housing.

[0054] The housing may include a bottom shell and a front panel, which are connected to form a whole, thereby defining a receiving cavity within the housing. The heating element can be housed within the receiving cavity. Furthermore, the cooking appliance may include components such as a fan assembly to dissipate heat from the heating element. The housing can integrate the heating element and the fan assembly together. The pot can contact the front panel, allowing the pot to be placed on the cooking appliance for heating. The heating element converts electrical energy into heat energy, thereby heating the pot and the food inside. Thus, the heating element serves as the heat source for the cooking appliance.

[0055] It should be understood that the cooking appliance provided in this application embodiment can be an induction cooker or an induction stove, and this application embodiment does not limit it.

[0056] Reference Figures 1 to 3 As shown, based on the above embodiments, this application embodiment also provides a heating assembly, which includes a coil disk 100 and a magnetic sensing assembly 200. The magnetic sensing assembly 200 is disposed on the coil disk 100 and includes at least three magnetic sensing sheets 210, which are spaced apart along the circumference of the coil disk 100.

[0057] In this embodiment, the coil 100 is used to generate an alternating magnetic field when energized, so that the magnetic sensing component 200 senses the alternating magnetic field. When the magnetic sensing component 200 is placed in the alternating magnetic field, the magnetic lines of force pass through the magnetic sensing component 200, generating a large number of eddy currents on the magnetic sensing component 200, which in turn causes the magnetic sensing component 200 to heat up on its own. The heat radiation from the magnetic sensing component 200 then heats the cookware, thereby heating the food inside the cookware.

[0058] Alternatively, when the coil 100 is energized, it can generate an alternating magnetic field. Both the magnetic sensing component 200 and the cookware can sense the alternating magnetic field. When the magnetic sensing component 200 and the cookware are placed in the alternating magnetic field, the magnetic lines of force pass through the magnetic sensing component 200 and the cookware, generating a large number of eddy currents on the magnetic sensing component 200 and the cookware. This causes the magnetic sensing component 200 and the cookware to heat up on their own, and the heat from the magnetic sensing component 200 can be conducted to the cookware, thereby heating the food inside the cookware together.

[0059] In other words, when the cookware is non-magnetic, the alternating magnetic field generated when the coil 100 is energized can act on the magnetic sensing component 200, thereby heating the non-magnetic cookware through the magnetic sensing component 200. This is the infrared heating scheme of the heating component. When the cookware is magnetic, the alternating magnetic field generated when the coil 100 is energized can act on the magnetic sensing component 200, thereby heating the magnetic cookware through the magnetic sensing component 200. At the same time, the alternating magnetic field generated when the coil 100 is energized can also directly act on the magnetic cookware, causing the magnetic cookware to generate heat on its own. This is a scheme combining electromagnetic heating and infrared heating of the heating component, which can improve the working efficiency of the heating component.

[0060] This allows the heating element to overcome the limitations of cookware materials, enabling cooking with both magnetic and non-magnetic cookware, thus expanding the application range of the heating element. Furthermore, compared to related technologies that combine electromagnetic and electroceramic heating, the control method of the heating element in this embodiment is simpler. Whether using infrared heating alone or a combination of electromagnetic and infrared heating, the same control scheme can be used, eliminating the need to select a specific control scheme based on the cookware material, thereby reducing the cost of cooking appliances.

[0061] Reference Figure 4 , Figure 5As shown, in a specific implementation, the coil 100 may include a tray frame 110, a coil 120, and multiple magnetic strips 130. The coil 120 is wound around the tray frame 110, and the coil 120 is wound around the side of the tray frame 110 facing the cookware. The coil 120 may include an inner coil 121 and an outer coil 122 with the same winding direction. The outer coil 122 and the magnetic sensing component 200 are arranged radially along the coil 100, and the outer coil 122 surrounds the outer periphery of the magnetic sensing component 200. The inner coil 121 and the magnetic sensing component 200 are arranged axially along the coil 100, and the inner coil 121 is located on the side of the magnetic sensing component 200 facing the coil 100. Multiple magnetic strips 130 are located on the side of the tray frame 110 away from the cookware.

[0062] In this way, the tray 110 can be used to support the inner coil 121, the outer coil 122, and the magnetic strip 130. When the inner coil 121 and the outer coil 122 are energized, they can both generate alternating current, thereby generating an alternating magnetic field. The magnetic sensing component 200 is disposed on one axial side of the inner coil 121, and the inner coil 121 can generate an alternating magnetic field at the bottom of the magnetic sensing component 200. The magnetic sensing component 200 is disposed on the radial inner side of the outer coil 122, and the outer coil 122 can generate an alternating magnetic field on the outer periphery of the magnetic sensing component 200. The magnetic fields of the inner coil 121 and the outer coil 122 act together on the magnetic sensing component 200, which can make the heat generation of the magnetic sensing component 200 more uniform, thereby improving the working efficiency of the magnetic sensing component 200 and preventing the magnetic sensing component 200 from deforming due to uneven temperature.

[0063] The magnetic strip 130 can optimize the magnetic field of the heating element, thereby enhancing the strength of the alternating magnetic field and improving the heating efficiency of the heating element. The magnetic strip 130 can also shield the magnetic field to prevent the heating element from interfering with other magnetic appliances, thereby improving the electromagnetic compatibility of the cooking appliance.

[0064] In related technologies, the magnetic plate generates eddy currents and heats up in an alternating magnetic field, resulting in high temperatures, sometimes exceeding 800℃. This leads to thermal stress on the magnetic plate, with higher temperatures causing greater thermal stress in higher-temperature areas and lower temperatures causing uneven stress distribution. If the magnetic plate lacks rigidity, this uneven stress distribution can lead to warping, deformation, or even breakage, resulting in the following problems: First, the distance between different parts of the magnetic plate and the coil 100 is inconsistent. Some parts of the magnetic plate are farther from the coil 100, reducing the heating efficiency, while others are closer, leading to localized high temperatures and oxidation. Second, deformation of the magnetic plate can cause abnormal noises.

[0065] To address the problems in related technologies, the magnetic sensing component 200 of this embodiment is not designed as a single large thin sheet, but rather as multiple independent magnetic sensing sheets 210. In contrast to the magnetic conductive plates of related technologies, which have larger planar dimensions and smaller thicknesses, resulting in a larger aspect ratio and lower rigidity, the magnetic conductive plates of this embodiment have reduced planar dimensions, thereby lowering their aspect ratio and increasing their rigidity. This reduces the deformation of the magnetic sensing sheets 210, improving oxidation and noise issues, and enhancing the heating efficiency of the heating component.

[0066] For example, the magnetic sensing sheet 210 can be a circular sheet, a rectangular sheet, a sector-shaped sheet, or a triangular sheet. Figure 1 , Figure 2 The illustration shows a design where the magnetic sensing sheet 210 is a circular disc. Figure 3 The illustration shows a scheme where the magnetic sensing sheet 210 is a fan-shaped sheet. When the magnetic sensing sheet 210 is a circular sheet, the ratio of the diameter to the thickness of a single magnetic sensing sheet 210 is small, thereby reducing the aspect ratio of the magnetic sensing sheet 210 and increasing the overall rigidity of the magnetic sensing sheet 210, thus improving the deformation resistance of the magnetic sensing sheet 210 at high temperatures.

[0067] The number of magnetic sensing sheets 210 should be three or more. On the one hand, this can effectively reduce the aspect ratio of the magnetic sensing sheets 210, thereby effectively improving the rigidity of the magnetic sensing sheets 210. On the other hand, it can increase the working area of ​​the magnetic sensing assembly 200, thereby improving the working efficiency of the magnetic sensing assembly 200.

[0068] The heating assembly provided in this application includes a coil 100 and a magnetic sensing assembly 200. The magnetic sensing assembly 200 includes magnetic sensing sheets 210. The coil 100 generates an alternating magnetic field when energized, and the magnetic sensing assembly 200 induces eddy currents in the alternating magnetic field to generate heat. The magnetic sensing assembly 200 then infrared-heats the cookware, thereby expanding the application range of the cooking appliance. By configuring the magnetic sensing assembly 200 with at least three independent magnetic sensing sheets 210, the planar dimensions of each individual sheet are reduced, thereby reducing the aspect ratio of each sheet and increasing its rigidity. This improves the deformation resistance of the magnetic sensing assembly 200 at high temperatures, thus mitigating problems such as oxidation, abnormal noise, and power reduction caused by deformation.

[0069] In one possible implementation, the magnetic sensing sheet 210 is circular, and the diameter D and thickness H of the magnetic sensing sheet 210 satisfy: 50≤D / H≤1000.

[0070] Understandably, when the magnetic sensing sheet 210 is a circular disc, the ratio of its diameter D to its thickness H is its aspect ratio. On one hand, if the ratio of diameter D to thickness H is greater than 100, the aspect ratio of a single magnetic sensing sheet 210 will be too large, reducing its rigidity and hindering the deformation resistance of the magnetic sensing assembly 200 at high temperatures. On the other hand, if the ratio of diameter D to thickness H is less than 50, the area of ​​a single magnetic sensing sheet 210 will be too small, resulting in a small area of ​​the magnetic sensing assembly 200, which reduces its heat generation and consequently lowers its power output.

[0071] Therefore, in this embodiment, when the ratio of the diameter D of the magnetic sensing sheet 210 to the thickness H of the magnetic sensing sheet 210 is between 50 and 1000, it is beneficial to reduce the aspect ratio of a single magnetic sensing sheet 210, thereby improving the stiffness of the magnetic sensing sheet 210, which in turn is beneficial to improving the deformation resistance of the magnetic sensing component 200 under temperature sensing, and also beneficial to increasing the area of ​​the magnetic sensing component 200, thereby improving the power of the magnetic sensing component 200.

[0072] For example, D / H can be any one of 50, 80, 50, 100, 200, 500, 800, 1000 or within any two ranges of values. This embodiment does not impose any restrictions on this.

[0073] In some embodiments, the diameter D of the magnetic sensing sheet 210 satisfies: D≤70mm. This setting can effectively reduce the planar dimensions of a single magnetic sensing sheet 210, thereby reducing the aspect ratio of a single magnetic sensing sheet 210, and thus increasing the stiffness of a single magnetic sensing sheet 210, thereby improving the deformation resistance of the magnetic sensing assembly 200 at high temperatures, and thus suppressing the deformation of the magnetic sensing assembly 200.

[0074] In some embodiments, the thickness H of the magnetic sensing sheet 210 satisfies: 0.2 mm ≤ H ≤ 1.5 mm.

[0075] It should be noted that if the thickness of the magnetic sensing sheet 210 is less than 0.2 mm, the magnetic sensing sheet 210 will have difficulty generating enough heat. Furthermore, when the thickness of the magnetic sensing sheet 210 is less than 0.2 mm, the aspect ratio of the magnetic sensing sheet 210 will be too large, which will result in the low rigidity of the magnetic sensing sheet 210.

[0076] If the thickness of the magnetic sensing sheet 210 is greater than 1.5mm, due to the skin effect of the magnetic sensing sheet 210 in the magnetic field, the current density on the side of the magnetic sensing sheet 210 facing away from the cookware is larger and more heat is generated, while the current density on the side of the magnetic sensing sheet 210 facing the cookware is smaller and less heat is generated. This will cause the heat to concentrate on the side of the magnetic sensing sheet 210 facing away from the cookware, resulting in a poor infrared heating effect of the magnetic sensing sheet 210 on the cookware, thereby reducing the heating efficiency of the heating component.

[0077] Therefore, in this embodiment, the thickness H of the magnetic sensing sheet 210 is between 0.2 mm and 1.5 mm, which is beneficial to reducing the aspect ratio of the magnetic sensing sheet 210, thereby improving the rigidity of the magnetic sensing sheet 210, which in turn is beneficial to improving the deformation resistance of the magnetic sensing component 200 at high temperatures, and also beneficial to improving the heat conduction efficiency of the magnetic sensing component 200, thereby improving the heating efficiency of the heating component.

[0078] For example, the thickness H of the magnetic sensing sheet 210 can be 0.2mm, 0.5mm, 1mm, 1.2mm or 1.5mm, etc.

[0079] The diameter of each magnetic sensing sheet 210 can be the same or different. The thickness of each magnetic sensing sheet 210 can be the same or different.

[0080] In one possible implementation, at least three magnetically sensing sheets 210 are tangent to a circumcircle with radius R centered at the center of the coil disk 100. The sum of the areas S1 of the at least three magnetically sensing sheets 210 and the area S2 of the circumcircle satisfy: S1 / S2 ≥ 0.5.

[0081] It should be noted that, since the multiple magnetic induction sheets 210 are uniformly distributed along the circumference of the coil disk 100, when the diameters of the multiple magnetic induction sheets 210 are the same, the circle formed by the centers of the multiple magnetic induction sheets 210 is concentrically set with the coil disk 100. In this case, a circumscribed circle can be found that is tangent to the outer side of all the magnetic induction sheets 210. This circumscribed circle is concentrically set with the coil disk 100, and the radius of the circumscribed circle is R. The area S2 of the circumscribed circle satisfies: S2 = πR 2 / 2, the area S3 of a single magnetically sensing sheet 210 satisfies: S3=πD 2 / 8, the sum of the areas S1 of at least three magnetic induction sheets 210 satisfies: S1=N*S3, where N is the number of magnetic induction sheets 210.

[0082] In this embodiment, the ratio of the sum of the areas S1 of at least three magnetic sensing sheets 210 to the area S2 of the circumscribed circle is greater than or equal to 0.5. This can be understood as the ratio of the area of ​​the blank area of ​​the circumscribed circle (the area where no magnetic sensing sheets 210 are set) to the area of ​​the circumscribed circle being less than 0.5. In this way, the area of ​​the blank area can be reduced, thereby increasing the working area of ​​the magnetic sensing component 200 and thus improving the power of the magnetic sensing component 200.

[0083] Reference Figures 1 to 5 As shown, in one possible implementation, the heating assembly further includes a heat insulation member 300, which is disposed on the coil disk 100. The heat insulation member 300 has a heat insulation groove 310, and the magnetic sensing assembly 200 is disposed in the heat insulation groove 310. The heat insulation groove 310 includes a first sidewall 311 surrounding the outer periphery of the magnetic sensing assembly 200, and at least three magnetic sensing sheets 210 are tangent to the first sidewall 311.

[0084] In other words, when multiple magnetic sensing sheets 210 are disposed in the heat insulation groove 310, since the multiple magnetic sensing sheets 210 are all tangent to the first side wall 311 of the heat insulation groove 310, the circle formed by the first side wall 311 of the heat insulation groove 310 can be considered as the circumcircle of the multiple magnetic sensing sheets 210.

[0085] Since at least three magnetic sensing sheets 210 are tangent to the first sidewall 311 of the heat insulation groove 310, the area ratio of the magnetic sensing component 200 on the bottom wall of the heat insulation groove 310 can be increased. In this way, the working area of ​​the magnetic sensing component 200 can be increased without increasing the bottom area of ​​the heat insulation groove 310, which is beneficial to improving the power of the magnetic sensing component 200.

[0086] Reference Figure 4 As shown, in some embodiments, the heat insulation groove 310 may be annular. Therefore, the heat insulation groove 310 may also include a second sidewall 312, and a first sidewall 311 surrounds the outer periphery of the second sidewall 312.

[0087] Specifically, the heat insulation component 300 may include a heat insulation ring 300a, an outer heat insulation flange 300b, and an inner heat insulation flange 300c. The outer heat insulation flange 300b is connected to the outer side of the heat insulation ring 300a and extends away from the heat insulation ring 300a along the axial direction of the heat insulation ring 300a. The inner heat insulation flange 300c is connected to the inner side of the heat insulation ring 300a and extends away from the heat insulation ring 300a along the axial direction of the heat insulation ring 300a.

[0088] In this way, the heat insulation ring 300a, the outer heat insulation flange 300b, and the inner heat insulation flange 300c can jointly define an annular heat insulation groove 310. The surface of the outer heat insulation flange 300b facing the inner heat insulation flange 300c forms a first sidewall 311, and the surface of the inner heat insulation flange 300c facing the outer heat insulation flange 300b forms a second sidewall 312. The heat insulation component 300 can prevent the heat of the magnetic sensing component 200 from radiating to the coil 120, thereby preventing the coil 120 from melting. In addition, the heat insulation component 300 can promote the heat of the magnetic sensing component 200 to concentrate towards the cookware, thereby improving the heating effect of the cookware.

[0089] Reference Figure 6 , Figure 7As shown, in some embodiments, at least one magnetic sensing sheet 210 has a flange 211 on its outer peripheral edge. Thus, compared to a planar magnetic sensing sheet 210, the magnetic sensing sheet 210 with flange 211 has a larger moment of inertia, which is beneficial to improving the stiffness of the magnetic sensing sheet 210 and thus helps to suppress the deformation of the magnetic sensing sheet 210 at high temperatures.

[0090] Reference Figure 8 , Figure 9 As shown, in some embodiments, at least one magnetic sheet 210 is provided with a concave-convex structure 212, which extends radially along the magnetic sheet 210 and / or extends circumferentially along the magnetic sheet 210.

[0091] Thus, for a planar magnetic sensing sheet 210, the magnetic sensing sheet 210 with the concave-convex structure 212 has a larger moment of inertia, which is beneficial to improving the stiffness of the magnetic sensing sheet 210, thereby helping to suppress the deformation of the magnetic sensing sheet 210 at high temperatures.

[0092] The concave-convex structure 212 may include correspondingly provided concave portions and convex portions, with the concave direction of the concave portion and the convex direction of the convex portion both facing away from the coil disk 100. The concave-convex structure 212 may extend radially along the magnetic sensing sheet 210, or the concave-convex structure 212 may extend circumferentially along the magnetic sensing sheet 210, or a portion of the concave-convex structure 212 may extend radially along the magnetic sensing sheet 210, while another portion of the concave-convex structure 212 may extend circumferentially along the magnetic sensing sheet 210. This embodiment does not impose any limitations on this.

[0093] In some embodiments, at least one magnetic sensing sheet 210 is provided with a through hole. In this way, when the magnetic sensing sheet 210 generates thermal stress at high temperature, causing the magnetic sensing sheet 210 to expand, the through hole will become smaller. That is, the through hole can provide deformation space for the magnetic sensing sheet 210, thereby allowing the thermal stress of the magnetic sensing sheet 210 to be released through the through hole, thus preventing stress concentration in the magnetic sensing sheet 210 and suppressing the deformation of the magnetic sensing sheet 210.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heating assembly, characterized in that, include: Coil disc (100); A magnetic sensing component (200) is disposed on the coil disk (100). The magnetic sensing component (200) includes at least three magnetic sensing sheets (210), which are arranged at intervals along the circumference of the coil disk (100).

2. The heating assembly according to claim 1, characterized in that, The magnetic sensing sheet (210) is circular, and the diameter D of the magnetic sensing sheet (210) and the thickness H of the magnetic sensing sheet (210) satisfy: 50≤D / H≤1000.

3. The heating assembly according to claim 2, characterized in that, The diameter D of the magnetic sensing sheet (210) satisfies: D≤70mm.

4. The heating assembly according to claim 2, characterized in that, The thickness H of the magnetic sensing sheet (210) satisfies: 0.2 mm ≤ H ≤ 1.5 mm.

5. The heating assembly according to any one of claims 2-4, characterized in that, At least three of the magnetically sensitive sheets (210) are tangent to the circumcircle with radius R centered at the center of the coil disk (100); The sum of the areas S1 of at least three of the magnetically sensitive sheets (210) and the area S2 of the circumscribed circle satisfy: S1 / S2≥0.

5.

6. The heating assembly according to claim 5, characterized in that, It also includes a heat insulation component (300), which is disposed on the coil disk (100), and the heat insulation component (300) has a heat insulation groove (310), and the magnetic sensing component (200) is disposed in the heat insulation groove (310). The heat insulation groove (310) includes a first sidewall (311) surrounding the outer periphery of the magnetic sensing component (200), and at least three of the magnetic sensing sheets (210) are tangent to the first sidewall (311).

7. The heating assembly according to any one of claims 1-4, characterized in that, The coil disk (100) includes a disk frame (110) and a coil (120) wound on the disk frame (110). The coil (120) includes an inner coil (121) and an outer coil (122) wound coaxially. At least a portion of the outer coil (122) and the inner coil (121) are offset along the axial direction of the coil disk (100). The magnetic sensing component (200) is located on one axial side of the inner coil (121), and the magnetic sensing component (200) is located on the radial inner side of the outer coil (122).

8. The heating assembly according to any one of claims 1-4, characterized in that, At least one of the magnetic sensing sheets (210) has a flange (211) on its outer peripheral edge.

9. The heating assembly according to any one of claims 2-4, characterized in that, At least one of the magnetic sensing sheets (210) is provided with a concave-convex structure (212) extending radially along the magnetic sensing sheet (210); and / or, the concave-convex structure (212) extending circumferentially along the magnetic sensing sheet (210).

10. A cooking utensil, characterized in that, It includes a housing and a heating assembly as described in any one of claims 1-9, wherein the heating assembly is housed within the housing.

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