Heating components and cooking appliances

Abstract

This application provides a heating element and a cooking appliance. The heating element includes a coil and a magnetic sensing element. The magnetic sensing element is disposed on the coil and is configured to generate heat under the influence of the magnetic field of the coil. The edge of the magnetic sensing element has a flange. The magnetic sensing element in the heating element provided by this application has good resistance to deformation.

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 to improve the deformation resistance of the magnetic sensing element by setting a flange at the edge of the magnetic sensing element.

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

[0007] Coil disc;

[0008] The magnetic sensing element is located on the coil disk and is configured to generate heat under the action of the magnetic field of the coil disk. The edge of the magnetic sensing element has a flange.

[0009] The heating assembly provided in this application expands the application scenarios of cooking appliances by incorporating a magnetic sensing element that generates heat itself in an alternating magnetic field. This magnetic sensing element radiates heat to the cookware, thereby heating it. Furthermore, by adding a flange to the magnetic sensing element, its rigidity is increased, enhancing its resistance to deformation at high temperatures. This reduces deformation and mitigates problems such as oxidation, abnormal noise, and power reduction caused by deformation.

[0010] In one possible implementation, the magnetic sensing element includes at least one magnetic sensing ring whose axis is aligned with the axis of the coil disk. The magnetic sensing ring has an inner edge and an outer edge, at least one of which is provided with a flange.

[0011] Thus, the hollow area at the center of the magnetic sensing ring is conducive to optimizing the magnetic lines of force, thereby enabling the magnetic lines of force to form a closed loop in the ring structure. Furthermore, by setting a flange on at least one of the inner edge and the outer edge of the magnetic sensing ring, the rigidity of the magnetic sensing component is improved, thereby enhancing the deformation resistance of the magnetic sensing component at high temperatures.

[0012] In one possible implementation, there are two flanges, which are the first flange and the second flange.

[0013] The first flange is connected to the inner edge, and the second flange is connected to the outer edge. Both the first flange and the second flange are located on one side of the magnetic ring and face away from the coil disk.

[0014] In this way, the cross-section of the magnetic sensing element can be U-shaped, which increases the moment of inertia of the magnetic sensing element and thus increases its stiffness. Furthermore, the first and second flanges are both set away from the coil disk, which helps to reduce the distance between the magnetic sensing ring and the coil in the axial direction of the coil disk, thereby improving the heating effect of the magnetic sensing element.

[0015] In one possible implementation, the extension dimension L1 of the first flange along the axial direction of the coil disk satisfies: 2 mm ≤ L1 ≤ 20 mm;

[0016] And / or, the extension dimension L2 of the second flange along the axial direction of the coil disk satisfies: 2 mm ≤ L2 ≤ 20 mm.

[0017] This helps to improve the stiffness of the magnetic sensing element, thereby improving its resistance to deformation at high temperatures, and also helps to control the volume of the magnetic sensing element, which in turn facilitates its assembly.

[0018] In one possible implementation, the thickness H of the magnetic ring satisfies: 0.2 mm ≤ H ≤ 3 mm.

[0019] This helps to improve the stiffness of the magnetic sensing element, thereby improving its resistance to deformation at high temperatures, and also helps to improve the heat transfer efficiency of the magnetic sensing element to the cookware, thereby improving the heating efficiency of the heating component.

[0020] In one possible implementation, there are at least two magnetic sensing rings, arranged radially from the inside to the outside along the coil disk;

[0021] At least one magnetic sensing ring has a flange.

[0022] This helps to reduce the difference between the inner and outer diameters of the magnetic sensing ring, resulting in a more uniform current density and heat generation. This, in turn, helps to reduce stress unevenness on the magnetic sensing ring, thus reducing deformation of the magnetic sensing component. Furthermore, by adding flanges to the inner or outer edges of the magnetic sensing ring, its resistance to deformation is improved, further reducing deformation of the magnetic sensing component.

[0023] In one possible implementation, the magnetic sensing ring has at least one concave-convex structure extending radially along the magnetic sensing ring; and / or, the concave-convex structure extending circumferentially along the magnetic sensing ring.

[0024] In this way, by setting concave and convex structures on the magnetic sensing ring, the moment of inertia of the magnetic sensing ring cross section can be increased, thereby improving the stiffness of the magnetic sensing component and its resistance to deformation at high temperatures. This can improve problems such as abnormal noise, oxidation, and decreased heating efficiency caused by deformation of the magnetic sensing component.

[0025] In one possible implementation, the coil disk includes a disk frame and a coil, the coil including an inner coil and an outer coil arranged coaxially, the inner coil being located on one axial side of the magnetic sensing element, and the outer coil being located on the radial outer side of the magnetic sensing element.

[0026] The heating assembly also includes a heat insulation component, which includes a heat insulation ring and an outer heat insulation flange. The outer heat insulation flange is connected to the outside of the heat insulation ring and extends away from the heat insulation ring along the axial direction of the heat insulation ring. The heat insulation ring is located between the inner coil and the magnetic sensing element, and the outer heat insulation flange is located between the outer coil and the magnetic sensing element. The end of the outer heat insulation flange away from the heat insulation ring is higher than the end of the magnetic sensing element away from the inner coil.

[0027] In this way, the inner and outer coils work together to generate alternating magnetic fields at the bottom and outer periphery of the magnetic sensing element, thereby increasing the magnetic field strength of the coil disk and improving the heating efficiency of the magnetic sensing element. The heat insulation element prevents the magnetic sensing element from heating the coil in reverse, thus improving the safety of the coil. Furthermore, since the end of the outer heat insulation flange away from the heat insulation ring is higher than the end of the flange away from the inner coil, the outer heat insulation flange can completely block the magnetic sensing element and the outer coil, thereby improving the heat insulation effect of the heat insulation element.

[0028] In one possible implementation, the magnetic sensing element has several through holes.

[0029] Thus, when the magnetic sensing component generates thermal stress at high temperatures, the through hole can provide deformation space, allowing the thermal stress to be released through the through hole, thereby preventing stress concentration in the magnetic sensing component and thus preventing deformation of the magnetic sensing component.

[0030] 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.

[0031] 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

[0032] 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.

[0033] Figure 1 This is a schematic diagram of the structure of the heating assembly provided in an embodiment of this application;

[0034] Figure 2 for Figure 1 AA-direction cross-sectional view;

[0035] Figure 3 for Figure 1 Top view;

[0036] Figure 4 for Figure 1 Exploded view;

[0037] Figure 5 This is a schematic diagram of the structure of the magnetic sensing element in the heating assembly provided in the embodiments of this application;

[0038] Figure 6 This is another structural schematic diagram of the magnetic sensing element in the heating assembly provided in the embodiments of this application;

[0039] Figure 7 for Figure 6 BB-direction cross-sectional view.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100 - Coil plate; 110 - Plate frame; 120 - Coil; 121 - Inner coil; 122 - Outer coil; 130 - Magnetic strip;

[0042] 200 - Magnetic sensing element; 210 - Flanged edge; 211 - First flange; 212 - Second flange; 220 - Magnetic sensing ring; 221 - Concave-convex structure;

[0043] 300 - Thermal insulation component; 310 - Thermal insulation ring; 320 - Outer thermal insulation flange; 330 - Inner thermal insulation flange. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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. Furthermore, the uneven heat distribution on the magnetic plate leads to uneven thermal stress. When the rigidity of the magnetic plate is insufficient, deformation can easily occur due to uneven thermal stress, resulting in problems such as abnormal noise, oxidation, and reduced power output.

[0050] In view of the above problems, embodiments of this application provide a heating component and a cooking device. By setting a flange on the edge of the magnetic sensing component, the overall rigidity of the magnetic sensing component is improved, thereby improving the deformation resistance of the magnetic sensing component at high temperatures, and thus improving problems such as abnormal noise, oxidation and power reduction of the magnetic sensing component.

[0051] 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.

[0052] 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.

[0053] It is 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 impose specific limitations on it.

[0054] The heating element provides a heat source for the cooking appliance; that is, it converts electrical energy into heat energy to heat the cookware and thus the food inside. The housing houses the heating element, integrating it with other components such as a fan assembly, and provides a support surface for the cookware.

[0055] Reference Figures 1 to 5 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 element 200. The magnetic sensing element 200 is disposed on the coil disk 100 and is configured to generate heat under the action of the magnetic field of the coil disk 100. The edge of the magnetic sensing element 200 has a flange 210.

[0056] In this embodiment, the coil 100 is used to generate an alternating magnetic field when energized, so that the magnetic sensing element 200 senses the alternating magnetic field. When the magnetic sensing element 200 is placed in the alternating magnetic field, the magnetic lines of force pass through the magnetic sensing element 200, generating a large number of eddy currents on the magnetic sensing element 200, which in turn causes the magnetic sensing element 200 to heat up on its own. Thus, the magnetic sensing element 200 radiates heat to the cookware, thereby heating the cookware.

[0057] Reference Figure 4 As shown, specifically, 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 is located on the side of the tray frame 110 facing the cookware. The multiple magnetic strips 130 are located on the side of the tray frame 110 away from the cookware. In this way, the tray frame 110 can be used to support the coil 120 and the magnetic strips 130. When the coil 120 is energized, it can generate an alternating current, thereby generating an alternating magnetic field. The magnetic strips 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 strips 130 can also shield the magnetic field to improve the electromagnetic compatibility of the cooking appliance.

[0058] Because the magnetic sensing element 200 generates eddy currents and heats up in the alternating magnetic field, its temperature is relatively high, reaching over 800℃. Thermal stress is easily generated on the magnetic sensing element 200, with higher thermal stress in high-temperature areas and lower thermal stress in low-temperature areas, resulting in uneven stress. If the rigidity of the magnetic sensing element 200 is insufficient, this uneven stress can lead to warping, deformation, or even breakage, causing the following problems: First, the distance between different parts of the magnetic sensing element 200 and the coil 120 is inconsistent. Some parts of the magnetic sensing element 200 are farther from the coil 120, reducing its heating efficiency, while other parts are closer to the coil 120, leading to localized high temperatures and oxidation. Second, deformation of the magnetic sensing element 200 can cause abnormal noises.

[0059] To address the aforementioned issues, the magnetic sensing element 200 in this embodiment incorporates a flange 210 at its edge. The flange 210 helps to disperse and redistribute the stress applied to the magnetic sensing element 200, reducing stress unevenness and thus lowering the probability of localized deformation. This improves the overall stability of the magnetic sensing element 200 and enhances its resistance to deformation at high temperatures. Consequently, without affecting the heating performance of the heating assembly, the deformation of the magnetic sensing element 200 can be reduced, thereby improving oxidation and noise issues and increasing the heating efficiency of the heating assembly.

[0060] For example, the outer periphery of a circular silicon steel sheet can be stamped or rolled, thereby causing plastic deformation of the outer periphery of the circular silicon steel sheet, thereby forming a magnetic sensing element 200 with a flange 210. That is, the flange 210 is set on the outer periphery of the magnetic sensing element 200 and extends along the axial direction of the coil disk 100.

[0061] For example, the inner and outer peripheral edges of a ring-shaped silicon steel sheet can be stamped or rolled, thereby causing plastic deformation of the inner and outer peripheral edges of the ring-shaped silicon steel sheet, thus forming a magnetic sensing element 200 with a flange 210. That is, at this time, the flange 210 is provided on the inner and outer peripheral edges of the magnetic sensing element 200 and extends along the axial direction of the coil disk 100.

[0062] It is understood that silicon steel sheets have high magnetic permeability, and the magnetic induction element 200 made of silicon steel sheets can generate heat efficiently under the magnetic field of the coil disk 100. Alternatively, the magnetic induction element 200 can also be made of ferrite, which has high magnetic permeability; this embodiment does not impose specific limitations on this.

[0063] It should be noted that when the cookware is non-magnetic, the magnetic field of the coil 100 can act on the magnetic sensing element 200, thereby heating the cookware through the magnetic sensing element 200. When the cookware is magnetic, the magnetic field of the coil 100 can act on the magnetic sensing element 200, thereby heating the cookware through the magnetic sensing element 200. Furthermore, the magnetic field of the coil 120 assembly can also directly act on the cookware, causing the cookware to generate heat on its own. The electromagnetic heating and infrared radiation heating work together to improve the heating effect of the magnetic cookware.

[0064] This allows the heating element to overcome the limitations imposed by cookware materials, enabling cooking with both magnetic and non-magnetic cookware, thus improving its versatility. Furthermore, compared to the combination of electromagnetic and electroceramic technologies in related fields, the control method of the heating element in this embodiment is simpler, reducing the cost of the cooking appliance. This is because the combination of electromagnetic and electroceramic technologies requires pre-determining the cookware material and then selecting a corresponding control method based on that material, and since it involves separate control, two control schemes need to be designed, resulting in more complex circuit control and increased costs.

[0065] The heating assembly provided in this application includes a coil 100 and a magnetic sensing element 200. The magnetic sensing element 200 includes a flange 210. The coil 100 generates an alternating magnetic field when energized, and the magnetic sensing element 200 generates heat due to eddy currents in the alternating magnetic field, thereby radiating heat to the cookware and expanding the application scenarios of the cooking appliance. By providing the flange 210 on the magnetic sensing element 200, the rigidity of the magnetic sensing element 200 is improved, thereby enhancing its resistance to deformation at high temperatures, reducing deformation, and mitigating problems such as oxidation and abnormal noise caused by deformation.

[0066] Reference Figure 5As shown, in some embodiments, the magnetic sensing element 200 includes at least one magnetic sensing ring 220, the axis of which is aligned with the axis of the coil disk 100, the magnetic sensing ring 220 having an inner edge and an outer edge, at least one of which is provided with a flange 210.

[0067] In other words, the flange 210 can be located on the inner edge of the magnetic sensing ring 220, in which case the cross-section of the magnetic sensing element 200 is L-shaped. Alternatively, the flange 210 can be located on the outer edge of the magnetic sensing ring 220, in which case the cross-section of the magnetic sensing element 200 is L-shaped. Or, the flange 210 can be located on both the inner and outer edges of the magnetic sensing ring 220, in which case the cross-section of the magnetic sensing element 200 is U-shaped. Compared to a planar magnetic conductive sheet, the magnetic sensing element 200 with the flange 210 has a larger moment of inertia, resulting in greater stiffness of the magnetic sensing element 200.

[0068] In this way, the hollow area at the center of the magnetic ring 220 is conducive to optimizing the magnetic lines of force, thereby enabling the magnetic lines of force to form a closed loop in the ring structure. Furthermore, by providing a flange 210 on at least one of the inner edge and the outer edge of the magnetic ring 220, the rigidity of the magnetic element 200 is improved, thereby enhancing the deformation resistance of the magnetic element 200 at high temperatures.

[0069] Reference Figure 5 As shown, in one possible implementation, there are two flanges 210, namely a first flange 211 and a second flange 212. The first flange 211 is connected to the inner edge, and the second flange 212 is connected to the outer edge. Both the first flange 211 and the second flange 212 are located on one axial side of the magnetic sensing ring 220 and face away from the coil disk 100.

[0070] It is understandable that when both the inner and outer edges of the magnetic sensing ring 220 are provided with flanges 210, the two flanges 210 can extend along the axial direction of the magnetic sensing ring 220 toward the side away from the coil disk 100. In this way, when the magnetic sensing element 200 is provided on the coil disk 100, the distance between the magnetic sensing ring 220 and the coil 120 in the axial direction of the coil disk 100 can be reduced, thereby improving the heating effect of the magnetic sensing element 200.

[0071] In some embodiments, the extension dimension L1 of the first flange 211 along the axial direction of the coil disk 100 satisfies: 2 mm ≤ L1 ≤ 20 mm. The extension dimension L2 of the second flange 212 along the axial direction of the coil disk 100 satisfies: 2 mm ≤ L2 ≤ 20 mm.

[0072] It should be noted that the extension dimension L1 of the first flange 211 along the axial direction of the coil disk 100 and the extension dimension L2 of the second flange 212 along the axial direction of the coil disk 100 may be different. Alternatively, within the allowable range of processing error, the extension dimension L1 of the first flange 211 along the axial direction of the coil disk 100 and the extension dimension L2 of the second flange 212 along the axial direction of the coil disk 100 may be the same. This embodiment does not impose any restrictions on this.

[0073] If the extension dimension L1 of the first flange 211 along the axial direction of the coil disk 100 is less than 2 mm, the first flange 211 cannot effectively improve the rigidity of the magnetic sensing element 200, and thus cannot effectively improve the deformation resistance of the magnetic sensing element 200. If the extension dimension L1 of the first flange 211 along the axial direction of the coil disk 100 is greater than 20 mm, it will result in the magnetic sensing element 200 having an excessively large dimension along the axial direction of the coil disk 100, which will result in the magnetic sensing element 200 having an excessively large volume and being difficult to process.

[0074] Therefore, setting the extension dimension L1 of the first flange 211 along the axial direction of the coil disk 100 to between 2 mm and 20 mm is beneficial to improving the rigidity of the magnetic sensing element 200, thereby improving the deformation resistance of the magnetic sensing element 200 at high temperatures, and is also beneficial to controlling the volume of the magnetic sensing element 200, which in turn is beneficial to the assembly of the magnetic sensing element 200.

[0075] Similarly, the extension dimension L2 of the second flange 212 along the axial direction of the coil disk 100 is set between 2 mm and 20 mm, which is beneficial to improve the rigidity of the magnetic sensing element 200, thereby improving the deformation resistance of the magnetic sensing element 200 at high temperature, and is also beneficial to control the volume of the magnetic sensing element 200, which is also beneficial to the assembly of the magnetic sensing element 200.

[0076] For example, L1 can be 2mm, 5mm, 8mm, 10mm, 15mm or 20mm, etc., and L2 can be 2mm, 6mm, 9mm, 10mm, 15mm or 20mm, etc.

[0077] In one possible implementation, the thickness H of the magnetic sensing ring 220 satisfies: 0.2 mm ≤ H ≤ 3 mm. It can be understood that the thickness of the flange 210 and the magnetic sensing ring 220 is the same, that is, the magnetic sensing element 200 can be regarded as a structural component with uniform thickness.

[0078] On the one hand, since the magnetic sensing element 200 generates heat mainly by inducing eddy currents through the magnetic sensing ring 220 when it is working, if the thickness of the magnetic sensing ring 220 is less than 0.1mm, the magnetic sensing ring 220 will have difficulty generating enough heat. Furthermore, when the thickness of the magnetic sensing ring 220 is less than 0.1mm, the rigidity of the magnetic sensing element 200 is low, and the deformation resistance of the magnetic sensing element 200 at high temperatures is poor.

[0079] On the other hand, due to the skin effect of the magnetic sensing element 200 in the magnetic field, the current density of the magnetic sensing element 200 closer to the coil 120 is larger and more heat is generated, while the current density of the magnetic sensing element 200 away from the coil 120 is smaller and less heat is generated. If the thickness of the magnetic sensing ring 220 is greater than 3mm, heat will be concentrated on the side of the magnetic sensing element 200 away from the coil 120, which will reduce the heat conduction efficiency of the magnetic sensing element 200 to the cookware, thereby reducing the heating efficiency of the heating component.

[0080] Therefore, in this embodiment, the thickness H of the magnetic sensing ring 220 is between 0.2 mm and 3 mm, which is beneficial to improving the rigidity of the magnetic sensing element 200, thereby improving the deformation resistance of the magnetic sensing element 200 at high temperatures, and also beneficial to improving the heat conduction efficiency of the magnetic sensing element 200 to the cookware, thereby improving the heating efficiency of the heating component.

[0081] For example, the thickness H of the magnetic sensing ring 220 can be any one of 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, or 3 mm, or fall within any two of these values.

[0082] In one possible implementation, there are at least two magnetic sensing rings 220, which are arranged radially from the inside to the outside along the coil disk 100, and at least one magnetic sensing ring 220 is provided with a flange 210.

[0083] This reduces the difference between the inner and outer diameters of individual magnetic sensing rings 220, resulting in a more uniform current density across each ring and more uniform heat generation. This, in turn, helps reduce stress unevenness in the magnetic sensing rings 220, thus reducing deformation of the magnetic sensing element 200. Furthermore, by providing flanges 210 on the inner or outer edges of the magnetic sensing rings 220, their resistance to deformation can be improved, further reducing deformation of the magnetic sensing element 200.

[0084] Reference Figure 6 and Figure 7 As shown, in some embodiments, the magnetic sensing ring 220 is provided with at least one concave-convex structure 221. The concave-convex structure 221 may include correspondingly provided concave portions and convex portions, and the concave direction of the concave portion and the convex direction of the convex portion are both opposite to the coil disk 100.

[0085] In this way, setting the concave and convex structure 221 on the magnetic sensing ring 220 can increase the moment of inertia of the cross section of the magnetic sensing ring 220, thereby improving the stiffness of the magnetic sensing component 200, and thus improving the deformation resistance of the magnetic sensing component 200 at high temperature, thereby improving the problems of abnormal noise, oxidation and reduced heating efficiency caused by deformation of the magnetic sensing component 200.

[0086] The concave-convex structure 221 can extend radially along the magnetic sensing ring 220 to form a radial concave-convex structure 221. Alternatively, the concave-convex structure 221 can extend circumferentially along the magnetic sensing ring 220 to form an annular concave-convex structure 221. Or, a portion of the concave-convex structure 221 can extend radially along the magnetic sensing ring 220, while another portion can extend circumferentially along the magnetic sensing ring 220, and the concave-convex structures 221 extending radially and circumferentially along the magnetic sensing ring 220 can be alternately arranged.

[0087] Reference Figure 2 and Figure 4 As shown, in one possible implementation, the coil disk 100 includes a disk frame 110 and a coil 120. The coil 120 includes an inner coil 121 and an outer coil 122 arranged coaxially. The inner coil 121 is located on one axial side of the magnetic sensing element 200, and the outer coil 122 is located on the radial outer side of the magnetic sensing element 200.

[0088] The heating assembly also includes a heat insulation element 300, which includes a heat insulation ring 310 and an outer heat insulation flange 320. The outer heat insulation flange 320 is connected to the outside of the heat insulation ring 310 and extends axially away from the heat insulation ring 310. The heat insulation ring 310 is located between the inner coil 121 and the magnetic sensing element 200, and the outer heat insulation flange 320 is located between the outer coil 122 and the magnetic sensing element 200. The end of the outer heat insulation flange 320 away from the heat insulation ring 310 is higher than the end of the magnetic sensing element 200 away from the inner coil 121.

[0089] In this way, the inner coil 121 and the outer coil 122 work together to generate an alternating magnetic field at the bottom and around the outer periphery of the magnetic sensing element 200, thereby increasing the magnetic field strength of the coil disk 100 and thus improving the heating efficiency of the magnetic sensing element 200.

[0090] The heat insulation component 300 can prevent the magnetic sensing component 200 from heating the coil 120 in the reverse direction, thereby improving the safety of the coil 120. Furthermore, since the end of the outer heat insulation flange 320 away from the heat insulation ring 310 is higher than the end of the magnetic sensing component 200 away from the inner coil 121, the outer heat insulation flange 320 can completely block the magnetic sensing component 200 and the outer coil 122, thereby improving the heat insulation effect of the heat insulation component 300.

[0091] In addition, the heat insulation element 300 may also include an inner heat insulation flange 330, which is connected to the inner side of the heat insulation ring 310 and extends away from the heat insulation ring 310 along the axial direction of the heat insulation ring 310. In this way, the heat insulation ring 310, the outer heat insulation flange 320 and the inner heat insulation flange 330 can jointly define a heat insulation groove and place the magnetic sensing element 200 in the heat insulation groove so that the heat of the magnetic sensing element 200 is concentrated and radiated to the cookware, and the magnetic sensing element 200 is prevented from heating the coil 120 in the opposite direction.

[0092] In one possible implementation, the magnetic sensing element 200 is provided with several through holes. In this way, when the magnetic sensing element 200 generates thermal stress at high temperature, the through holes can provide deformation space, thus releasing the thermal stress through the through holes, thereby preventing stress concentration in the magnetic sensing element 200 and preventing deformation of the magnetic sensing element 200.

[0093] 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 by, include: Coil disc (100); A magnetic sensing element (200) is disposed on the coil disk (100), the magnetic sensing element (200) is configured to generate heat under the action of the magnetic field of the coil disk (100), and the edge of the magnetic sensing element (200) has a flange (210).

2. The heating assembly of claim 1, wherein, The magnetic sensing element (200) includes at least one magnetic sensing ring (220), the axial direction of which is aligned with the axial direction of the coil disk (100), the magnetic sensing ring (220) having an inner edge and an outer edge, at least one of which is provided with the flange (210).

3. The heating assembly of claim 2, wherein, The number of flanges (210) is two, and the two flanges (210) are the first flange (211) and the second flange (212). The first flange (211) is connected to the inner edge, and the second flange (212) is connected to the outer edge. Both the first flange (211) and the second flange (212) are located on one side of the magnetic sensing ring (220) and face away from the coil disk (100).

4. The heating assembly of claim 3, wherein, The extension dimension L1 of the first flange (211) along the axial direction of the coil disk (100) satisfies: 2 mm ≤ L1 ≤ 20 mm; And / or, the extension dimension L2 of the second flange (212) along the axial direction of the coil disk (100) satisfies: 2 mm ≤ L2 ≤ 20 mm.

5. The heating assembly of any of claims 2-4, wherein, The thickness H of the magnetic sensing ring (220) satisfies: 0.2 mm ≤ H ≤ 3 mm.

6. The heating assembly of any of claims 2-4, wherein, There are at least two magnetic sensing rings (220), and the at least two magnetic sensing rings (220) are arranged from the inside to the outside along the radial direction of the coil disk (100); At least one of the magnetic sensing rings (220) is provided with the flange (210).

7. The heating assembly of any of claims 2-4, wherein, The magnetic sensing ring (220) is provided with at least one concave-convex structure (221) extending radially along the magnetic sensing ring (220); and / or, the concave-convex structure (221) extending circumferentially along the magnetic sensing ring (220).

8. The heating assembly of any of claims 2-4, wherein, The coil disk (100) includes a disk frame (110) and a coil (120). The coil (120) includes an inner coil (121) and an outer coil (122) arranged coaxially. The inner coil (121) is located on one axial side of the magnetic sensing element (200), and the outer coil (122) is located on the radial outer side of the magnetic sensing element (200). It also includes a heat insulation component (300), which includes a heat insulation ring (310) and an outer heat insulation flange (320). The outer heat insulation flange (320) is connected to the outside of the heat insulation ring (310) and extends away from the heat insulation ring (310) along the axial direction of the heat insulation ring (310). The heat insulation ring (310) is located between the inner coil (121) and the magnetic sensing element (200), and the outer heat insulation flange (320) is located between the outer coil (122) and the magnetic sensing element (200). The end of the outer heat insulation flange (320) away from the heat insulation ring (310) is higher than the end of the magnetic sensing element (200) away from the inner coil (121).

9. The heating assembly of any one of claims 1-4, wherein, The magnetic sensing element (200) has several through holes.

10. A cooking appliance characterized by, 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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