Heating elements, heating appliances, cooking utensils and cooking equipment

Abstract

The present invention provides a heating element, a heating appliance, a cooking appliance, and a cooking device. The heating element comprises: a first inorganic layer; a heating component, the heating component being arranged on one side of the first inorganic layer; and a second inorganic layer, the second inorganic layer being arranged on a side of the heating component away from the first inorganic layer, wherein the surface of the heating component facing the first inorganic layer has a first color, the surface of the heating component facing the second inorganic layer has a second color, and the first color and the second color are different. The two opposing surfaces of the heating component in the heating appliance have different abilities to absorb or emit thermal radiation, which can increase the heat conduction and radiation on one side of the heating component, so that the heat on the heating component can be quickly dissipated, reducing the heat accumulation on the heating component, thereby achieving higher heating efficiency, uniform heating, and better heating effect.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking equipment, and in particular to a heating element, a heating appliance, a cooking appliance and a cooking equipment. Background Art

[0002] As living standards improve, healthy eating has become a crucial issue closely linked to human health. Inorganic materials such as glass, ceramics, and quartz are highly trusted by consumers due to their excellent health properties. Cooking utensils such as ceramic stew pots, ceramic liners, glass health pots, and quartz teapots are extremely popular in the market. However, glass itself is not magnetic and cannot be heated by electromagnetic heating. Therefore, how to effectively integrate these products with existing electromagnetic heating technology has become a pressing challenge for product developers.

[0003] At present, the more mature technology is to install heating tubes and heating plates on glass, ceramics and other products. However, the contact area between the heating layer and the glass and ceramics in this technology is small, and the heat transfer efficiency is low, resulting in a long boiling time in the all-glass kettle, uneven heating, and poor user experience.

[0004] Therefore, the related technology of existing cooking utensils still needs to be improved. Summary of the Invention

[0005] In one aspect of the present invention, the present invention provides a heating element. According to an embodiment of the present invention, the heating element includes: a first inorganic layer; a heating component, the heating component is arranged on one side of the first inorganic layer; and a second inorganic layer, the second inorganic layer is arranged on the side of the heating component away from the first inorganic layer, wherein the surface of the heating component facing the first inorganic layer has a first color, the surface of the heating component facing the second inorganic layer has a second color, and the first color and the second color are different. The two opposite surfaces of the heating component in the heating device have different abilities to absorb or emit thermal radiation, which can increase the heat conduction and radiation on one side of the heating component, so that the heat on the heating component can be quickly dissipated, reducing the heat accumulation on the heating component, thereby making the heating efficiency higher, the heating uniform, and the effect better.

[0006] According to an embodiment of the present invention, the thickness of the second inorganic layer is greater than the thickness of the first inorganic layer, and the second color is darker than the first color.

[0007] According to an embodiment of the present invention, the brightness of the second color is higher than the brightness of the first color.

[0008] According to an embodiment of the present invention, the first color is an achromatic color, and the second color is a chromatic color.

[0009] According to an embodiment of the present invention, the surface of the first inorganic layer facing the heating component or the surface of the second inorganic layer facing the heating component further has a third color, and the third color is different from the first color and / or the second color.

[0010] According to an embodiment of the present invention, the third color is the same as any one of the first color and the second color.

[0011] According to an embodiment of the present invention, the third color is different from at least one of the first color and the second color, the third color has the same hue as at least one of the first color and the second color, and the brightness of the third color is greater than the brightness of at least one of the first color and the second color.

[0012] According to an embodiment of the present invention, the thickness of the second inorganic layer is greater than that of the first inorganic layer, and the third color is located on the surface of the second inorganic layer facing the heating component.

[0013] According to an embodiment of the present invention, the material constituting the heating component includes metallic magnetic materials and inorganic materials.

[0014] According to an embodiment of the present invention, the metallic magnetically sensitive material includes silver, copper, and aluminum.

[0015] According to an embodiment of the present invention, the inorganic material includes at least one of silicon oxide, aluminum oxide, bismuth oxide, magnesium oxide, sodium oxide, calcium oxide and potassium oxide.

[0016] According to an embodiment of the present invention, the heating component includes a heating layer, and the heating layer includes: a first sub-heating layer, which is arranged on one side of the first inorganic layer, and the material of the first sub-heating layer includes an inorganic material; and a second sub-heating layer, which is arranged on a side of the first sub-heating layer away from the first inorganic layer, and the material of the second sub-heating layer includes a metallic magnetic material.

[0017] According to an embodiment of the present invention, the heating layer further includes: a third sub-heating layer, which is arranged on a side of the second sub-heating layer away from the first sub-heating layer, and the material of the third sub-heating layer further includes the inorganic material.

[0018] According to an embodiment of the present invention, the material of the first sub-heating layer or the material of the third sub-heating layer also includes a metal magnetic-sensitive material, and the second sub-heating layer also includes an inorganic material, wherein the content of the metal magnetic-sensitive material in the second sub-heating layer is higher than the content of the metal magnetic-sensitive material in the first sub-heating layer or the content of the metal magnetic-sensitive material in the material of the third sub-heating layer, and the content of the inorganic material in the second sub-heating layer is lower than the content of the inorganic material in the first sub-heating layer or the content of the inorganic material in the material of the third sub-heating layer.

[0019] According to an embodiment of the present invention, the metallic magnetically sensitive material in the second sub-heating layer is configured into a mesh structure, and the inorganic material in at least one of the first sub-heating layer and the third sub-heating layer is distributed in the mesh structure.

[0020] According to an embodiment of the present invention, at least one of the first sub-heating layer and the third sub-heating layer has a first protrusion on the surface close to the second sub-heating layer, and the first protrusion is embedded in the second sub-heating layer and connected to the inorganic material in the mesh structure.

[0021] According to an embodiment of the present invention, the heating component further includes a glaze layer, which is arranged in at least one of the following positions: between the first sub-heating layer and the first inorganic layer; between the second sub-heating layer and the second inorganic layer; between the first sub-heating layer and the second sub-heating layer.

[0022] According to an embodiment of the present invention, the sintering temperature of the glaze layer is less than 750° C., and the material of the glaze layer includes bismuth oxide.

[0023] According to an embodiment of the present invention, the glaze layer satisfies at least one of the following conditions: when the glaze layer is arranged between the second sub-heating layer and the second inorganic layer, at least one of the surface of the glaze layer close to the second sub-heating layer and the surface of the second inorganic layer close to the second sub-heating layer has a second protrusion, and the second protrusion is embedded in at least one of the first sub-heating layer and the glaze layer; when the glaze layer is arranged between the first sub-heating layer and the first inorganic layer, at least one of the first sub-heating layer and the first inorganic layer has a third protrusion on the surface close to the glaze layer, and the third protrusion is embedded in the glaze layer.

[0024] According to an embodiment of the present invention, the first inorganic layer or the second inorganic layer includes at least one of aluminum oxide, silicon oxide, calcium oxide, and strontium oxide.

[0025] According to an embodiment of the present invention, the first inorganic layer and the second inorganic layer satisfy at least one of the following conditions: the content of calcium oxide in the second inorganic layer is greater than the content of calcium oxide in the first inorganic layer; the content of strontium oxide in the second inorganic layer is greater than the content of strontium oxide in the first inorganic layer; the second color is darker than the first color.

[0026] According to an embodiment of the present invention, the first inorganic layer and the second inorganic layer satisfy at least one of the following conditions: the content of calcium oxide in the second inorganic layer is greater than or equal to 0.01%; the content of calcium oxide in the first inorganic layer is less than 0.01%; the content of strontium oxide in the first inorganic layer and the second inorganic layer is less than or equal to 0.01%.

[0027] According to an embodiment of the present invention, the surface of the first inorganic layer facing the heating component or the surface of the second inorganic layer facing the heating component comprises metal tin.

[0028] In another aspect, the present invention provides a heating device. According to an embodiment of the present invention, the heating device includes the aforementioned heating element. Heat conduction and radiation within the heating device are rapid, thereby rapidly heating the interior of the heating device and reducing heat accumulation, thereby improving cooking efficiency and achieving good cooking results.

[0029] In another aspect, the present invention provides a cooking utensil. According to an embodiment of the present invention, the cooking utensil comprises: a container body; and a container bottom, the container bottom being connected to the container body and forming a storage space. The container bottom includes the aforementioned heating element or heating device, with the first inorganic layer of the heating element being located on a side facing the storage space. Heat conduction and radiation within the cooking utensil are rapid, allowing the interior of the cooking utensil to heat up quickly, reducing heat accumulation, and thereby improving cooking efficiency and achieving good cooking results.

[0030] According to an embodiment of the present invention, the surface of the second inorganic layer in the heating element away from the heating assembly is configured as the outer surface of the bottom of the container, and the second inorganic layer is connected to the container body.

[0031] In another aspect of the present invention, a cooking device is provided. According to an embodiment of the present invention, the cooking device comprises the aforementioned cooking utensil. The cooking device has high efficiency and good cooking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The figure shows a cross-sectional structural diagram of a heating device according to an embodiment of the present invention.

[0033] Figure 2A schematic cross-sectional view of a heating device according to another embodiment of the present invention is shown.

[0034] Figure 3 The figure shows a cross-sectional structural diagram of a heating device according to another embodiment of the present invention.

[0035] Figure 4 The figure shows a cross-sectional structural diagram of a heating device according to another embodiment of the present invention.

[0036] Figure 5 The figure shows a cross-sectional structural diagram of a heating device according to another embodiment of the present invention.

[0037] Figure 6 The figure shows a cross-sectional structural diagram of a heating device according to another embodiment of the present invention.

[0038] Figure 7 A schematic flow chart showing a method for manufacturing a heating device according to an embodiment of the present invention is shown.

[0039] Figure 8 A schematic cross-sectional view of a cooking appliance according to an embodiment of the present invention is shown.

[0040] Reference numerals:

[0041] 10: Container body 20: Container bottom 100: First inorganic layer 200: Heating element 210: First sub-heating layer 220: Second sub-heating layer 230: Third sub-heating layer 300: Second inorganic layer 400a, 400b: Glaze layer DETAILED DESCRIPTION

[0042] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in this field or the product specifications are used. Where the manufacturer of the reagents or instruments is not specified, all are conventional products that can be obtained commercially.

[0043] Specifically, the present invention aims to at least partially address one of the technical problems in the related art. To this end, one object of the present invention is to provide a heating device having two opposing surfaces of a heating element with different abilities to absorb or emit thermal radiation, thereby increasing heat conduction and radiation on one side of the heating element, allowing heat to dissipate quickly, reducing heat accumulation on the heating element, and achieving higher heating efficiency, more uniform heating, or better heating effects.

[0044] Based on this, in one aspect of the present invention, the present invention provides a heating element. According to an embodiment of the present invention, referring to Figure 1The heating element includes: a first inorganic layer 100; a heating component 200 arranged on one side of the first inorganic layer 100; and a second inorganic layer 300 arranged on the side of the heating component 200 away from the first inorganic layer 100, the color of the surface of the heating component 200 facing the first inorganic layer 100 is a first color, and the color of the surface of the heating component 200 facing the second inorganic layer 300 is a second color, and the first color and the second color are different. Since the heating component 200 in the heating element has two surfaces opposite to each other, and the two surfaces opposite to each other (in other words, the surface of the heating component 200 facing the first inorganic layer 100 described above; and the surface of the heating component 200 facing the second inorganic layer 300 described above) have different abilities to absorb or emit thermal radiation, the different colors mean that the two opposite surfaces have different abilities to absorb or emit thermal radiation, and thus the surface with a stronger ability to absorb or emit thermal radiation has a stronger ability to conduct and radiate heat, that is, the heat conduction and radiation on one side of the heating component 200 are increased, so that the heat on the heating component 200 can be quickly dissipated, reducing the heat accumulation on the heating component 200, and thus making the heating efficiency higher, the heating more uniform, and the effect better; in addition, since the surface with a weaker ability to absorb or emit thermal radiation has a weaker ability to conduct and radiate heat, the outward heat radiation of the surface with a weaker ability to absorb or emit thermal radiation can also be reduced, thereby improving the thermal insulation effect of that side and thus improving the utilization rate of heat.

[0045] According to an embodiment of the present invention, it should be noted that the first inorganic layer and the second inorganic layer mentioned in this article may be transparent or not, as long as the first color and the second color of the two opposite surfaces of the heating component 200 can be displayed through the first inorganic layer and the second inorganic layer. Therefore, the transparency of the first inorganic layer and the second inorganic layer is not subject to special restrictions and will not be repeated in the following text.

[0046] According to the embodiments of the present invention, further, the inventors found after a lot of in-depth investigations and experimental verifications that when the color of the surface mentioned above is darker, the ability of the surface to absorb or emit thermal radiation is stronger; when the color of the surface mentioned above is lighter, the ability of the surface to absorb or emit thermal radiation is weaker. The inventors optimized the relationship between the color and thickness of the first inorganic layer and the second inorganic layer mentioned above, that is: when the thickness of the second inorganic layer is set to be larger than the thickness of the first inorganic layer, and when the second color is darker than the first color, by setting the thickness of the second inorganic layer to be greater than the thickness of the first inorganic layer, the heating device can achieve rapid heating on the first inorganic layer side when heating, and improve the thermal resistance of the second inorganic layer, improve the thermal insulation effect of the second inorganic layer, and further promote the transfer of heat to the first inorganic layer; at the same time, setting the second color to be darker than the first color The color is dark. During the heating process of the heating component, the second inorganic layer side absorbs more heat radiation, and the heat is more easily concentrated on this side. The heat transfer on the second inorganic layer side is slower. If the thickness of the second inorganic layer is set to be smaller than the thickness of the first inorganic layer, the heating component is likely to break due to the high heat. If the thickness of the second inorganic layer is set to be greater than the thickness of the first inorganic layer, the risk of the heating component breaking can be reduced, and the thermal resistance of the second inorganic layer can be further improved, the rate of heat conduction to the outside of the second inorganic layer can be reduced, and the heat loss to the outside can be further reduced. The heat generated by the heating component can be effectively conducted through the first inorganic layer for heating the medium to be heated, and it is not easy to be conducted through the thicker second inorganic layer to the air or to other objects in contact with the second inorganic layer, thereby further improving the heating efficiency, which is beneficial to further improve the heat utilization rate of the heating component and provide a better user experience.

[0047] According to an embodiment of the present invention, when the second color is darker than the first color, the specific setting method can be to set the hue of the first color and the second color to be the same, and the lightness of the second color is lower than the lightness of the first color. For example, the first color and the second color can both be yellow hues, and the first color is brighter than the second color, that is, the first color can be bright yellow and the second color can be dark yellow (it should be noted that those skilled in the art can understand that the hue here refers to the perception of the human eye caused by the ratio of the radiation of each wavelength reflected by the surface of the first inorganic layer and the surface of the second inorganic layer in this application; The brightness here refers to the eye's perception of the brightness and darkness of light sources and object surfaces, a visual experience mainly determined by the intensity of light; generally speaking, the stronger the light, the brighter it looks; the weaker the light, the darker it looks); of course, in other embodiments of the present invention, the hues of the first color and the second color may also be different, in which case the brightness of the second color is also lower than that of the first color. For example, the first color may be an orange hue, the second color may be a yellow hue, and the second color is darker than the first color, that is, the first color may be bright orange, while the second color is dark yellow. Through the above-mentioned setting method, the heat conduction and radiation on one side of the heating component can be further increased, so that the heat on the heating component can be dissipated more quickly, further reducing the heat accumulation on the heating component, thereby making the heating efficiency higher, the heating more uniform, and the effect better.

[0048] According to an embodiment of the present invention, in addition, the hues of the first color and the second color are not particularly limited, and the hues of the first color and the second color can independently include red hue, orange hue, yellow hue, green hue, cyan hue, purple hue, etc. Of course, it can be understood that the hues of the first color and the second color can also be mixed hues, such as a mixed hue of red hue and green hue, or a mixed hue of cyan hue and purple hue, etc. Furthermore, by changing different hues, the heat conduction and radiation on one side of the heating component can be further increased, so that the heat on the heating component can be dissipated more quickly, further reducing the heat accumulation on the heating component, thereby making the heating efficiency higher, the heating more uniform, and the effect better.

[0049] According to an embodiment of the present invention, the brightness of the first color mentioned above is higher than the brightness of the second color. As long as the above conditions are met, the specific brightness ranges of the second color and the first color are not particularly limited. That is to say, through different brightness, the heat conduction and radiation on one side of the heating component can be achieved, so that the heat on the heating component can be dissipated more quickly, reducing the heat accumulation on the heating component, thereby making the heating efficiency higher, the heating more uniform, and the effect better. It will not be repeated in the following text.

[0050] In some other embodiments of the present invention, the first color can also be an achromatic color system, while the second color system is a chromatic color system. Specifically, if the second color is a chromatic color system, it is the same as described above and will not be described in detail here; and the first color system is an achromatic color system, that is, the first color can also be black, white, and various shades of gray series blended from black and white. In some preferred embodiments of the present invention, the first color can be silvery white, and the second color can be yellow or orange-yellow, etc., which further increases the heat conduction and radiation on one side of the heating component, so that the heat on the heating component can be dissipated more quickly, reducing the heat accumulation on the heating component, thereby further improving the heating efficiency, making the heating more uniform, and achieving better results; at the same time, since silvery white is a relatively healthy color generally recognized by consumers, it provides a better experience during use and a better appearance.

[0051] According to an embodiment of the present invention, referring to Figure 1 The surface of the first inorganic layer 100 facing the heating component 200 or the surface of the second inorganic layer 300 facing the heating component 200 also has a third color, and the third color is different from the first color and / or the second color. Therefore, the third color works together with at least one of the first color and the second color to better deepen the color of the surface of the heating component, which can enhance the heat conduction and radiation of the surface with a stronger ability to absorb or emit thermal radiation, thereby making the heating efficiency higher, the heating uniform, and the effect better; it can also further reduce the outward heat radiation of the surface with a weaker ability to absorb or emit thermal radiation, further improve the thermal insulation effect of this side, and thus better improve the utilization rate of heat.

[0052] It is understandable that the manner of setting the second color to be darker than the first color is not particularly limited. For example, different colors can be achieved by adding different pigments to the heating component, or by causing physical or chemical changes in one or more components in the heating component. Again, I will not elaborate on this.

[0053] According to an embodiment of the present invention, the third color is the same as any one of the first color and the second color. Specifically, if the first inorganic layer has a third color on the surface facing the heating component, the third color is the same as the first color; if the second inorganic layer has a third color on the surface of the heating component, the third color is the same as the second color; if the first inorganic layer has a third color on the surface facing the heating component and the second inorganic layer has a third color on the surface of the heating component, since the first color and the second color are different, the third color is the same as any one of the first color and the second color; thereby, the third color works together with any one of the first color and the second color to better deepen the color of the surface of the heating component, so that the surface with a stronger ability to absorb or emit thermal radiation has stronger heat conduction and radiation, thereby making the heating efficiency higher, the heating uniform, and the effect better; it can also further reduce the outward heat radiation of the surface with a weaker ability to absorb or emit thermal radiation, further improve the thermal insulation effect of this side, and thus better improve the utilization rate of heat.

[0054] According to an embodiment of the present invention, the third color is different from at least one of the first color and the second color, the third color has the same hue as at least one of the first color and the second color, and the brightness of the third color is greater than the brightness of at least one of the first color and the second color. For example, the first color, the second color, and the third color can all be yellow hues, and the third color is brighter than the first color or the second color. That is, the first color can be light yellow, the second color can be dark yellow, and the third color can be bright yellow. Through the above-mentioned setting method, the heat conduction and radiation on the side of the heating component where the third color is located can be further increased, so that the heat on the heating component can be dissipated more quickly, further reducing the heat accumulation on the heating component, thereby achieving higher heating efficiency, more uniform heating, and better effect.

[0055] According to an embodiment of the present invention, the thickness of the second inorganic layer is greater than that of the first inorganic layer, and the third color is located on the surface of the second inorganic layer facing the heating component. Thus, the thickness of the second inorganic layer is greater than that of the first inorganic layer, so that when the heating device is heating, it can not only achieve rapid heating on the side of the first inorganic layer, but also improve the thermal resistance of the second inorganic layer, improve the thermal insulation effect of the second inorganic layer, and further promote heat transfer to the first inorganic layer; at the same time, the third color works together with the second color to better deepen the color of the side where the second inorganic layer is located, so that during the heating process of the heating component, the second inorganic layer side absorbs more thermal radiation, thereby further improving the heating efficiency.

[0056] According to an embodiment of the present invention, the materials constituting the heating component may include metallic magnetic materials and inorganic materials. Specifically, the metallic magnetic materials may include silver, copper, and aluminum; the inorganic materials may include at least one of aluminum oxide (Al2O3), bismuth oxide (Bi2O3), magnesium oxide (MgO), silicon oxide (SiO2), sodium oxide (Na2O), calcium oxide (CaO), and potassium oxide (K2O). Thus, a certain thermal resistance can be formed between the second inorganic layer and the first inorganic layer, thereby reducing the heat transfer between the first inorganic layer and the second inorganic layer, reducing the noise during heat transfer, and improving the uniformity of heating of the heating component. In addition, the risk of rupture of the first inorganic layer or the second inorganic layer due to heat concentration can also be reduced.

[0057] According to an embodiment of the present invention, the inorganic material includes bismuth oxide. This, on the one hand, imparts a specific color to the heating element, and on the other hand, reduces the use of inorganic pigment particles and improves the uniformity of the internal structure of the heating element, thereby reducing the difficulty of manufacturing the heating element. Furthermore, the inorganic material also includes calcium oxide, which stabilizes the structure of the bismuth oxide, thereby producing a stable color.

[0058] According to an embodiment of the present invention, further, referring to Figure 2 , the heating component includes a heating layer, and the heating layer may further include: a first sub-heating layer 210, the first sub-heating layer 210 is arranged on one side of the first inorganic layer 300, and the material of the first sub-heating layer 210 includes an inorganic material; and a second sub-heating layer 220, the second sub-heating layer 220 is arranged on the side of the first sub-heating layer 210 away from the first inorganic layer 220, and the material of the second sub-heating layer 220 includes a metal magnetic material; specifically, the metal magnetic material may include silver, copper, and aluminum; the inorganic material may include aluminum oxide (Al2O3), Bismuth oxide (Bi2O3), magnesium oxide (MgO), silicon oxide (SiO2), sodium oxide (Na2O), calcium oxide (CaO) and potassium oxide (K2O), etc., thereby forming a certain thermal resistance between the first sub-heating layer and the second sub-heating layer, thereby reducing the heat transfer between the second sub-heating layer and the first sub-heating layer, reducing the noise during heat transfer, and improving the uniformity of heating of the heating component. In addition, it can also reduce the risk of rupture of the heating layer caused by heat concentration; and the second sub-heating layer is made of different materials from the first sub-heating layer, which can better promote the formation of different colors.

[0059] According to an embodiment of the present invention, further, the thickness of the second sub-heating layer can be 10 microns to 25 microns, specifically, it can be 10 microns, 11 microns, 12 microns, 13 microns, 14 microns, 15 microns, 16 microns, 17 microns, 18 microns, 19 microns, 20 microns, 21 microns, 22 microns, 23 microns, 24 microns or 25 microns, etc., which can enable the heating layer to form a lower thermal resistance, thereby further improving the heat transfer rate of the heating component and making its heating effect better.

[0060] According to an embodiment of the present invention, further, the block resistance of the second sub-heating layer can be 0.1mΩ / sq~20mΩ / sq, specifically 0.1mΩ / sq, 0.5mΩ / sq, 1mΩ / sq, 1mΩ / sq, 2mΩ / sq, 3mΩ / sq, 4mΩ / sq, 5mΩ / sq, 6mΩ / sq, 7mΩ / sq, 8mΩ / sq, 9mΩ / sq, 10mΩ / sq, 11mΩ / sq, 12mΩ / sq, 13mΩ / sq, 14mΩ / sq, 15mΩ / sq, 16mΩ / sq, 17mΩ / sq, 18mΩ / sq, 19mΩ / sq, 20mΩ / sq, etc., thereby enabling the heating resistor to be used at a higher power, with higher thermal efficiency and further improved safety.

[0061] According to an embodiment of the present invention, further, the thickness of the first sub-heating layer can be 1-5 microns, specifically, it can be 1 micron, 2 microns, 2.5 microns, 3 microns, 4 microns, 5 microns, etc., and its thickness is relatively appropriate, which can enable the heating layer to form a lower thermal resistance, thereby further improving the heat transfer rate of the heating component and making its heating effect better.

[0062] In other embodiments of the present invention, referring to Figure 3 The heating layer may further include: a third sub-heating layer 230 arranged on the side of the second sub-heating layer 220 described above away from the first sub-heating layer 210 described above. The material of the third sub-heating layer 230 includes an inorganic material, which can improve the bonding strength between the heating layer and the second inorganic layer, and can form a thermal resistance between the heating layer and the second inorganic layer, thereby reducing the risk of the heating element being broken due to excessive heating of the second inorganic layer or the heating layer when the two are in direct contact, thereby further increasing the heat conduction and radiation on one side of the heating component, so that the heat on the heating component can be dissipated more quickly, further reducing the heat accumulation on the heating component, thereby making the heating efficiency higher, the heating more uniform, and the effect better.

[0063] According to an embodiment of the present invention, the material of the first sub-heating layer or the material of the third sub-heating layer also includes a metal magnetic-sensitive material, and the second sub-heating layer also includes an inorganic material, wherein the content of the metal magnetic-sensitive material in the second sub-heating layer is higher than the content of the metal magnetic-sensitive material in the first sub-heating layer or the content of the metal magnetic-sensitive material in the material of the third sub-heating layer, and the content of the inorganic material in the second sub-heating layer is lower than the content of the inorganic material in the first sub-heating layer or the content of the inorganic material in the material of the third sub-heating layer. Therefore, on the one hand, the content of metal magnetic material in the second sub-heating layer is relatively high, so that the second sub-heating layer generates more heat, and there is a certain thermal resistance when the heat is transferred to the first inorganic layer or the second inorganic layer, thereby reducing the transfer of heat, reducing the noise during heat transfer, and reducing the risk of the heating element breaking; on the other hand, the material of the first sub-heating layer or the material of the third sub-heating layer includes metal magnetic material, which can make the first sub-heating layer or the third sub-heating layer generate a certain amount of heat, so that the heat transfer has a certain transition, improve the uniformity of heat dissipation, reduce the generation of concentrated heat in the first sub-heating layer or the third sub-heating layer, and improve the bonding force between the first sub-heating layer and the first inorganic layer or the third sub-heating layer and the second inorganic layer.

[0064] It can be understood that the material of the second sub-heating layer, the material of the first sub-heating layer and the material of the third sub-heating layer can all include bismuth oxide, and the content of bismuth oxide in the second sub-heating layer is lower than the content of bismuth oxide in the first sub-heating layer or the content of bismuth oxide in the material of the third sub-heating layer. On the one hand, the first sub-heating layer and the third sub-heating layer contain more bismuth oxide, which can make the heating layer produce a certain color, thereby making the surface of the heating element form color, and the content of metal magnetic material in the second sub-heating layer is relatively high, which can better improve the heating efficiency of the heating layer; on the other hand, the first sub-heating layer and the third sub-heating layer have a high content of bismuth oxide, which can promote the migration of bismuth in bismuth oxide into the first inorganic layer and the second inorganic layer. At the same time, the metal elements in the first inorganic layer and the second inorganic layer migrate toward the heating layer, thereby forming a darker color on the surface of the first inorganic layer close to the first sub-heating layer or the surface of the second inorganic layer close to the third sub-heating layer; in addition, the high content of bismuth oxide can reduce the softening point of the first sub-heating layer and the third sub-heating layer, so that when the heating layer is sintered, the influence of metal elements (such as silver, copper, and aluminum) on the first sub-heating layer and the third sub-heating layer is reduced.

[0065] According to an embodiment of the present invention, further, it can be understood that the metal magnetically sensitive material mentioned above in the second sub-heating layer can be constructed into a structure with a mesh shape, that is, a mesh structure (not shown in the figure). The inorganic material in the first sub-heating layer is distributed in the mesh structure and is connected to the first sub-heating layer and / or the third sub-heating layer; and / or the inorganic material in the third sub-heating layer is also distributed in the mesh structure and is connected to the first sub-heating layer and / or the third sub-heating layer. Through the setting of the above-mentioned mesh structure, the third sub-heating layer, the first sub-heating layer, and the second sub-heating layer can be better bonded together, which can further enhance the bonding strength of the third sub-heating layer, the first sub-heating layer and the second sub-heating layer mentioned above, thereby further improving the overall mechanical properties of the heating component; at the same time, it can also further enable the heat in the second sub-heating layer to dissipate more quickly and evenly.

[0066] According to an embodiment of the present invention, the third sub-heating layer and / or the first sub-heating layer has a first protrusion (not shown in the figure) on the surface close to the second sub-heating layer, and it can be understood that the inorganic material in the aforementioned mesh structure can be connected to the first protrusion, and the first protrusion is also embedded in the second sub-heating layer. Through the above-mentioned setting method, an "anchor" structure can be formed on the surface of the third sub-heating layer and the first sub-heating layer close to the second sub-heating layer, further enhancing the bonding strength between the above-mentioned structure and the second sub-heating layer, thereby further improving the overall mechanical properties of the heating component; at the same time, it can also further enable the heat in the second sub-heating layer to be dissipated more quickly and evenly.

[0067] In other embodiments of the present invention, referring to Figure 4 、 Figure 5 and Figure 6 The heating component may also be provided with a glaze layer, which may be provided at the following positions: between the first inorganic layer 100 and the first sub-heating layer (see the structural diagram for reference Figure 4 The glaze layer 400a in the second inorganic layer 200 and the second sub-heating layer (see the structural diagram Figure 5 The glaze layer 400b in the first sub-heating layer is disposed between the first sub-heating layer and the second sub-heating layer (not shown in the figure). It can be understood by those skilled in the art that, in addition to the specific arrangement of the glaze layer described above, the glaze layer can also be disposed between the first inorganic layer 100 and the first sub-heating layer, and also between the second inorganic layer 200 and the second sub-heating layer (see the structural diagram for details). Figure 6The glaze layer 400a, 400b in the heating element is provided so that the bonding between the first inorganic layer 100 and the first sub-heating layer, the second inorganic layer 200 and the second sub-heating layer, or between the first sub-heating layer and the second sub-heating layer is stronger and more stable; at the same time, the heat conduction and radiation on one side of the heating element can be further increased, so that the heat on the heating element can be dissipated more quickly, further reducing the heat accumulation on the heating element, thereby making the heating efficiency higher, the heating more uniform, and the effect better.

[0068] According to an embodiment of the present invention, the thickness of the glaze layer can be greater than the thickness of the heating layer, thereby increasing the thermal resistance of heat transfer to the glaze layer, and the dark color of the glaze layer can make the glaze layer have a better thermal insulation effect.

[0069] According to an embodiment of the present invention, it should be noted that the glaze layer mentioned herein is not transparent, but is a film layer that can form a color when combined with the first inorganic layer or the second inorganic layer, which will not be repeated in the following text.

[0070] According to an embodiment of the present invention, the temperature (i.e., the sintering temperature) at which the glaze layer reaches the minimum pores, the maximum shrinkage, the densest product, the best performance, or becomes a solid aggregate through sintering can be less than 750°C. The material of the glaze layer may include bismuth oxide. On the one hand, the high content of bismuth oxide can lower the softening point of the glaze layer, thereby lowering the sintering temperature of the glaze layer and reducing the impact of the glaze layer on the heating layer during sintering; on the other hand, bismuth oxide can make the glaze layer produce a certain color, thereby promoting the formation of color on the surface of the heating element.

[0071] It is understood that the material comprising the glaze layer can be the same as the material comprising the heating layer, that is, the material comprising the glaze layer includes an inorganic material, and the inorganic material includes at least one of silicon oxide, aluminum oxide, bismuth oxide, magnesium oxide, sodium oxide, calcium oxide, and potassium oxide. This can increase the bonding strength between the glaze layer and the heating layer, thereby further improving the overall mechanical performance of the heating assembly; at the same time, it can also further enable the heat in the second sub-heating layer to be dissipated more quickly and evenly.

[0072] According to an embodiment of the present invention, the glaze layer can meet at least one of the following conditions: when the glaze layer is arranged between the second sub-heating layer and the second inorganic layer, at least one of the surface of the glaze layer close to the second sub-heating layer and the surface of the second inorganic layer close to the second sub-heating layer can further have a second protrusion (not shown in the figure), and the second protrusion can also be embedded in the aforementioned glaze layer and / or the first sub-heating layer; when the glaze layer is arranged between the first sub-heating layer and the first inorganic layer, at least one of the surface of the first sub-heating layer close to the glaze layer and the surface of the first inorganic layer close to the glaze layer can further have a third protrusion (not shown in the figure), as known to those skilled in the art, and the aforementioned third protrusion can be embedded in the glaze layer. Through the above arrangement, an "anchor" structure can be formed between the above structures, further enhancing the bonding strength between the above structures, thereby further improving the overall mechanical properties of the heating component; at the same time, the heat conduction and radiation on one side of the heating component can be further increased, so that the heat on the heating component can be dissipated more quickly, further reducing the heat accumulation on the heating component, thereby achieving higher heating efficiency, more uniform heating, and better effect.

[0073] According to a more specific embodiment of the present invention, referring to Figure 1Since the heating element described in the present application includes: a first inorganic layer 100; a heating component 200 arranged on one side of the first inorganic layer 100; and a second inorganic layer 300 arranged on the side of the heating component 200 away from the first inorganic layer 100, the color of the surface of the first inorganic layer 100 of the heating component 200 is a first color, and the color of the surface of the heating component 200 facing the second inorganic layer 300 is a second color, the first color and the second color are different, and the second color is darker than the first color. When assembled into a cooking device, during the heating process, the first inorganic layer 100 rapidly heats to 100°C within 10 to 20 seconds, then continuously heats the water or food. Because of this rapid heating, heat transfer from the first inorganic layer 100 during cooking is primarily conducted, rapidly transferring heat to the water or food, while heat radiation is negligible. On the second inorganic layer 300, the heating element generates heat and transfers it to this side. The second inorganic layer 300 then transfers and radiates heat to the air and the base of the cooking device, primarily through radiation. The lighter first color facilitates heat transfer from the heating element to the first inorganic layer, promoting heat conduction. Heat transfer from the second inorganic layer is primarily conducted to the external environment through radiation. The darker second color absorbs more heat radiation. The slower heat transfer between the first and second inorganic layers reduces the rate of heat transfer to the second inorganic layer, thereby reducing the impact of high temperatures on components such as the base of the cooking device on the second inorganic layer, and thus increasing the lifespan of the cooking device. When heating stops, the second color becomes darker, allowing for faster dissipation of accumulated heat, preventing heat accumulation on the heating element and extending its lifespan. Testing has shown that during the heating process, when the heating power reaches 1500W, the bottom of the cooking device can reach a maximum temperature of 180°C. Because the heating element in this application has strong heat conductivity on one side, heat can be quickly transferred away, making it safer for consumers and extending the lifespan of the cooking device. Testing has shown that the heating assembly described in this application can reduce the bottom temperature of the cooking device to 100°C within 10 to 20 seconds after heating stops. Furthermore, heat from the heating assembly can be quickly dissipated, reducing heat accumulation on the heating assembly. Furthermore, the thickness of the first inorganic layer is set to be smaller than that of the second inorganic layer. A smaller first inorganic layer accelerates heat transfer to the first inorganic layer, while a larger second inorganic layer, combined with a darker second color, reduces the rate of heat transfer to the second inorganic layer, minimizing the impact of high temperatures on components on the second inorganic layer side.

[0074] According to an embodiment of the present invention, the materials of the first inorganic layer and the second inorganic layer are not particularly limited. In some embodiments of the present invention, the materials of the first inorganic layer and the second inorganic layer can be glass, which has a wide range of sources, is easy to obtain, has a low cost, and can better achieve visual transparency, thereby increasing the heat conduction and radiation on one side of the heating component, so that the heat on the heating component can be quickly dissipated, reducing heat accumulation on the heating component.

[0075] According to an embodiment of the present invention, the first inorganic layer or the second inorganic layer may include at least one of aluminum oxide, silicon oxide, calcium oxide, and strontium oxide, which are widely available, easily obtainable, and low in cost, and can better produce an inorganic layer with better visual effects.

[0076] According to an embodiment of the present invention, the first inorganic layer and the second inorganic layer satisfy at least one of the following conditions: the calcium oxide content in the second inorganic layer is greater than the calcium oxide content in the first inorganic layer; the strontium oxide content in the second inorganic layer is greater than the strontium oxide content in the first inorganic layer; and the second color is darker than the first color. As a result, the calcium and strontium in the first and second inorganic layers can diffuse into the heating element, improving the stability of the bismuth oxide structure in the heating element. At the same time, the bismuth oxide in the heating element can better diffuse into the first and second inorganic layers, thereby forming corresponding colors on the surfaces of the first and second inorganic layers. Furthermore, the high calcium oxide and strontium oxide content in the second inorganic layer can deepen the color of one side of the second inorganic layer, making the color more eye-catching.

[0077] According to an embodiment of the present invention, the first inorganic layer and the second inorganic layer satisfy at least one of the following conditions: the content of calcium oxide in the second inorganic layer is greater than or equal to 0.01%, for example, it can be 0.01%, 0.02%, 0.03%, 0.05%, 0.07%, 0.09%, 0.10%, etc.; the content of calcium oxide in the first inorganic layer is less than 0.01%, for example, it can be 0.01%, 0.02%, 0.03%, 0.05%, 0.07%, 0.09%, 0.10%, etc.; the content of strontium oxide in the first inorganic layer and the second inorganic layer is less than or equal to 0.01%, for example, it can be 0.01%, 0.009%, 0.007%, 0.005%, 0.004%, 0.003%, 0.002%, etc.

[0078] According to an embodiment of the present invention, the surface of the first inorganic layer facing the heating component or the surface of the second inorganic layer facing the heating component includes metallic tin, thereby better improving the stability of the bismuth oxide structure in the heating component and further improving the color appearance.

[0079] In another aspect of the present invention, the present invention provides a method for making a front heating element. Figure 7 , the method may include the following steps:

[0080] S100: forming a heating component on one side of the first inorganic layer.

[0081] S200: forming a second inorganic layer on a side of the heating component away from the first inorganic layer.

[0082] According to an embodiment of the present invention, the specific process of forming the aforementioned heating component on one side of the aforementioned first inorganic layer, and forming the second inorganic layer on a side of the heating component away from the first inorganic layer can include conventional processes, such as spraying processes, etc. The specific process conditions and parameters for forming the heating component on one side of the first inorganic layer, and the specific process conditions and parameters for forming the second inorganic layer on a side of the heating component away from the first inorganic layer can all be conventional process conditions and parameters, which will not be described in detail here. The operation is simple, convenient, easy to implement, easy to industrialize, and the aforementioned heating element can be effectively produced; and the heating element prepared by the aforementioned method has high heat conduction and radiation on one side of the heating component, so that the heat on the heating component can be dissipated more quickly, further reducing the heat accumulation on the heating component, thereby making the heating efficiency higher, the heating more uniform, and the effect better.

[0083] In yet another aspect, the present invention provides a heating device. According to an embodiment of the present invention, the heating device includes the aforementioned heating element. Heat conduction and radiation within the heating device are rapid, thereby rapidly heating the interior of the heating device and reducing heat accumulation, thereby improving cooking efficiency and achieving excellent cooking results.

[0084] In another aspect of the present invention, the present invention provides a cooking utensil. Figure 8 The cooking device comprises a container body 10 and a container bottom 20 (not shown) interconnected with the container body 10, which also forms a storage space. The container bottom 20 includes the aforementioned heating element or the aforementioned heating device, and the first inorganic layer 100 of the heating element is located on the side facing the storage space. Heat conduction and radiation within the cooking device are rapid, allowing the interior of the cooking device to heat up quickly, reducing heat accumulation, and thus improving cooking efficiency and achieving good cooking results.

[0085] According to an embodiment of the present invention, as described above, referring to Figure 8The heating component here can specifically include a first sub-heating layer 210 and a second sub-heating layer 220, and the surface of the second inorganic layer 300 in the heating element away from the heating component can also be constructed as the outer surface of the container bottom 20 mentioned above. On this basis, the container body 10 and the second inorganic layer 300 are connected to each other. Compared with the traditional solution of setting a heating layer at the bottom of cooking utensils such as glass or ceramics, the cooking utensil of the present invention can be directly used as the container bottom of the cooking utensil formed of glass or ceramics due to the second inorganic layer. Therefore, while ensuring the overall thickness of the bottom of the cooking utensil container, the heat loss of the heating component can be reduced, thereby further improving the heating efficiency. In addition, through the above-mentioned setting method, it is also possible to better achieve the increase of heat conduction and radiation on one side of the heating component, so that the heat on the heating component can be dissipated more quickly, further reducing the heat accumulation on the heating component, thereby making the heating efficiency higher, the heating more uniform, and the effect better.

[0086] According to the embodiment of the present invention, the method of connecting the second inorganic layer and the container body is not particularly limited, and can be achieved by welding, bonding, encapsulation, etc., which will not be described in detail here. Therefore, the operation is simple, convenient, easy to implement, and easy to industrialize.

[0087] According to an embodiment of the present invention, the cooking utensil can be a full glass kettle or a full glass pot, etc., which can meet most cooking needs. In addition to the heating device described above, the above cooking utensil can also include the structure that a conventional cooking utensil should have. I will not go into details here, as it has a wide range of applications.

[0088] According to embodiments of the present invention, the specific shape, size, and material of the container body of the cooking utensil are not particularly limited. This ensures that the original flavor of food is preserved during cooking, while also facilitating easy cleaning. Furthermore, the utensil has a superior appearance, further enhancing its aesthetics and meeting new user expectations for the appearance of kitchenware. The cooking utensil can also be specifically embodied as a pot, health pot, kettle, or stewing pot, meeting various user needs and enabling its application in a wider range of kitchen appliances. Its specific shape is not particularly limited.

[0089] In another aspect, the present invention provides a cooking device. According to an embodiment of the present invention, the cooking device includes the aforementioned cooking utensil. The first inorganic layer 100 of the heating element in the cooking device is located on the side facing the storage space. Heat conduction and radiation within the cooking device are rapid, allowing the interior of the cooking device to heat up quickly, reducing heat accumulation, thereby improving cooking efficiency and achieving good cooking results.

[0090] According to an embodiment of the present invention, in addition to the cooking utensils described above, the above-mentioned cooking device may also include structures that conventional cooking devices should have, such as a coil disk, a base, etc., to better achieve electromagnetic heating, which will not be elaborated here.

[0091] The embodiments of the present invention are described in detail below.

[0092] Example 1

[0093] Reference Figure 1 The heating element includes: a first inorganic layer 100; a heating component 200 arranged on one side of the first inorganic layer 100; a second inorganic layer 300 arranged on the side of the heating component 200 away from the first inorganic layer 100, the color of the surface of the first inorganic layer 100 of the heating component 200 is a first color, and the color of the surface of the heating component 200 facing the second inorganic layer 300 is a second color, and the first color and the second color are different.

[0094] When the heating element is assembled into a cooking device, during the heating process, the first inorganic layer 100 heats up to 100°C in 10 seconds and then continues to heat the water or food. Because of the rapid temperature increase, heat transfer on the first inorganic layer 100 side during cooking is primarily conducted, quickly transferring heat to the water or food, with negligible heat transfer by radiation. On the second inorganic layer 300 side, the heating element generates heat and transfers it to this side. The second inorganic layer 300 then transfers and radiates heat to the air and the base of the cooking device, where heat transfer is primarily conducted by radiation. Testing has shown that when the heating power reaches 1500W, the maximum temperature at the bottom of the cooking device can reach 180°C. However, because the heating element in this application has strong single-sided heat radiation capability, it can quickly transfer heat away, making it safer for consumers and extending the life of the cooking device. Testing has shown that using the heating element described in this application, the temperature at the bottom of the cooking device can be reduced to 100°C within 10 seconds after heating stops.

[0095] To sum up, in the cooking device provided by the present invention, the heating component 200 (facing the surface of the second inorganic layer 300 described above) has different abilities to absorb or emit thermal radiation, and the two opposite surfaces have different abilities to absorb or emit thermal radiation, so that the surface with stronger ability to absorb or emit thermal radiation has stronger heat conduction and radiation, that is, the heat conduction and radiation on one side of the heating component 200 are increased, so that the heat on the heating component 200 can be quickly dissipated, reducing the heat accumulation on the heating component 200, thereby making the heating efficiency higher, the heating uniform, and the effect better.

[0096] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0097] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0098] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0099] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0100] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0101] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A heating element, characterized in that include: a first inorganic layer; a heating component, the heating component being arranged on one side of the first inorganic layer; and a second inorganic layer, the second inorganic layer being arranged on a side of the heating component away from the first inorganic layer; The surface of the heating component facing the first inorganic layer has a first color, and the surface of the heating component facing the second inorganic layer has a second color, and the first color and the second color are different.

2. The heating element according to claim 1, characterized in that The thickness of the second inorganic layer is greater than that of the first inorganic layer, and the second color is darker than the first color.

3. The heating element according to claim 2, characterized in that The lightness of the second color is lower than the lightness of the first color.

4. The heating element according to claim 2, characterized in that The first color is an achromatic color, and the second color is a chromatic color.

5. The heating element according to claim 1, characterized in that The surface of the first inorganic layer facing the heating component or the surface of the second inorganic layer facing the heating component further has a third color, and the third color is different from the first color and / or the second color.

6. The heating element according to claim 5, characterized in that The third color is the same as any one of the first color and the second color.

7. The heating element according to claim 5, characterized in that The third color is different from at least one of the first color and the second color, the third color has the same hue as at least one of the first color and the second color, and the brightness of the third color is greater than the brightness of at least one of the first color and the second color.

8. The heating element according to claim 5, characterized in that The thickness of the second inorganic layer is greater than that of the first inorganic layer, and the third color is located on a surface of the second inorganic layer facing the heating element.

9. The heating element according to claim 1, wherein The materials constituting the heating component include metallic magnetic materials and inorganic materials.

10. The heating element according to claim 9, characterized in that The metallic magnetic material includes at least one of silver, copper and aluminum.

11. The heating element according to claim 9, characterized in that The inorganic material includes at least one of silicon oxide, aluminum oxide, bismuth oxide, magnesium oxide, sodium oxide, calcium oxide, and potassium oxide.

12. The heating element according to claim 1, wherein The heating assembly includes a heating layer, and the heating layer further includes: a first sub-heating layer, the first sub-heating layer being disposed on one side of the first inorganic layer, the material of the first sub-heating layer comprising an inorganic material; and The second sub-heating layer is arranged on a side of the first sub-heating layer away from the first inorganic layer, and the material of the second sub-heating layer includes a metallic magnetic material.

13. The heating element according to claim 12, characterized in that The heating layer further comprises: A third sub-heating layer is provided on a side of the second sub-heating layer away from the first sub-heating layer, and a material of the third sub-heating layer includes the inorganic material.

14. The heating element according to claim 13, characterized in that The material of the first sub-heating layer or the material of the third sub-heating layer also includes a metal magnetic material, and the second sub-heating layer also includes an inorganic material, wherein the content of the metal magnetic material in the second sub-heating layer is higher than the content of the metal magnetic material in the first sub-heating layer or the content of the metal magnetic material in the material of the third sub-heating layer, and the content of the inorganic material in the second sub-heating layer is lower than the content of the inorganic material in the first sub-heating layer or the content of the inorganic material in the material of the third sub-heating layer.

15. The heating element according to claim 13, characterized in that The metallic magnetically sensitive material in the second sub-heating layer is configured into a mesh structure, and the inorganic material in at least one of the first sub-heating layer and the third sub-heating layer is distributed in the mesh structure.

16. The heating element according to claim 15, characterized in that At least one of the first sub-heating layer and the third sub-heating layer has a first protrusion on a surface close to the second sub-heating layer. The first protrusion is embedded in the second sub-heating layer and connected to the inorganic material in the mesh structure.

17. The heating element according to claim 12, wherein The heating assembly further includes a glaze layer, which is disposed at at least one of the following locations: between the first sub-heating layer and the first inorganic layer; between the second sub-heating layer and the second inorganic layer; between the first sub-heating layer and the second sub-heating layer.

18. The heating element according to claim 17, characterized in that The sintering temperature of the glaze layer is less than 750° C., and the material of the glaze layer includes bismuth oxide, aluminum oxide and silicon oxide.

19. The heating element according to claim 17, wherein The glaze layer satisfies at least one of the following conditions: When the glaze layer is disposed between the second sub-heating layer and the second inorganic layer, at least one of a surface of the glaze layer close to the second sub-heating layer and a surface of the second inorganic layer close to the second sub-heating layer has a second protrusion, and the second protrusion is embedded in at least one of the second sub-heating layer and the glaze layer; When the glaze layer is arranged between the first sub-heating layer and the first inorganic layer, at least one of the first sub-heating layer and the first inorganic layer further has a third protrusion on a surface close to the glaze layer, and the third protrusion is embedded in the glaze layer.

20. The heating element according to claim 1, wherein The first inorganic layer or the second inorganic layer includes at least one of aluminum oxide, silicon oxide, calcium oxide, and strontium oxide.

21. The heating element according to claim 20, characterized in that The first inorganic layer and the second inorganic layer satisfy at least one of the following conditions: The content of calcium oxide in the second inorganic layer is greater than the content of calcium oxide in the first inorganic layer; The content of strontium oxide in the second inorganic layer is greater than the content of strontium oxide in the first inorganic layer; The second color is darker than the first color.

22. The heating element according to claim 21, characterized in that The first inorganic layer and the second inorganic layer satisfy at least one of the following conditions: The content of calcium oxide in the second inorganic layer is greater than or equal to 0.01%; The content of calcium oxide in the first inorganic layer is less than 0.01%; The content of strontium oxide in the first inorganic layer and the second inorganic layer is less than or equal to 0.01%.

23. The heating element according to claim 1, wherein A surface of the first inorganic layer facing the heating component or a surface of the second inorganic layer facing the heating component includes metal tin.

24. A heating device, characterized in that: The heating element comprises the heating element according to any one of claims 1 to 23.

25. A cooking utensil, characterized in that: include: Container body; and The bottom of the container is connected to the container body and forms a storage space, the bottom of the container comprises the heating element according to any one of claims 1 to 23 or the heating device according to claim 24, and the first inorganic layer of the heating element is located on the side facing the storage space.

26. The cooking appliance according to claim 25, wherein The surface of the second inorganic layer in the heating element away from the heating assembly is configured as the outer surface of the bottom of the container, and the second inorganic layer is connected to the container body.

27. A cooking device, characterized in that: A cooking utensil comprising the cooking utensil according to claim 25 or 26.

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