Photo-thermal baking tray

Abstract

The utility model discloses a photo-thermal baking tray which comprises a baking tray body, the top of the baking tray body is provided with a heating face used for placing food materials, and one or more graphene heating assemblies used for generating heat energy are arranged in the baking tray body. The graphene heating assembly is arranged to enable generated heat radiation to face the position where the heating face is located, and the part, located between the graphene heating assembly and the heating face, of the baking tray body is made of a heat-resisting infrared transmitting material which allows heat radiation to penetrate through. The utility model provides a photo-thermal baking tray which can heat food materials on the baking tray in a heat radiation mode, the heating efficiency is high, and the heating surface of the food materials is uniform.

Description

Technical Field

[0001] This utility model relates to the technical field of graphene heating, specifically a photothermal baking pan. Background Technology

[0002] Traditional baking pans are typically made of heat-conducting materials such as metal or ceramic, heating food through heat conduction. Specifically, an electric heating wire is placed inside the casing beneath the baking pan. When the heating wire is powered on, the heat generated is transferred to the baking pan via heat conduction to heat the food. However, the heat generated by the heating wire is often concentrated in a localized area, resulting in poor temperature uniformity across the baking pan. Food in high-temperature areas is prone to overheating and burning, while food in low-temperature areas heats up slowly.

[0003] Existing technologies have also considered using thermal radiation to heat food. However, this method is mostly used in ovens or air fryers, where the heating element directly heats the food or indirectly heats it by heating the air. However, the oil and steam generated during the heating process can easily contaminate the heating element, making it difficult to clean and affecting its lifespan.

[0004] As for baking pans, the existing metal or ceramic materials are inherently opaque. If both transparency and heat conduction properties are to be achieved, the material cost of the baking pan would be too high. Therefore, existing baking pans are all made of opaque heat-conducting materials, and the built-in electric heating wire heats the baking pan through heat conduction. Utility Model Content

[0005] The present invention aims to at least partially solve one of the technical problems in the related art: to provide a light and heat baking pan that can heat the food on the baking pan by means of heat radiation, with high heating efficiency and uniform heating surface of the food.

[0006] Therefore, one objective of this invention is to provide a photothermal baking pan, comprising a pan body with a heating surface on top for placing food. The pan body contains one or more graphene heating elements for generating heat. These graphene heating elements are configured such that the generated heat radiation is directed towards the heating surface. The portion of the pan body between the graphene heating elements and the heating surface is made of an infrared-transmitting material that allows heat radiation to pass through and is heat-resistant. On one hand, the heat radiation generated by the graphene heating element can radiate onto the heating surface through the infrared-transmitting material between the graphene heating elements and the heating surface, heating the food placed on the heating surface through heat radiation. Simultaneously, another portion of the heat generated by the graphene heating elements can be transferred to the heating surface through heat conduction. Therefore, the food on the heating surface can be heated simultaneously by both heat radiation and heat conduction, resulting in high heat utilization and uniform heating. On the other hand, unlike existing ovens, the space between the heating surface and the graphene heating elements is filled with a solid infrared-transmitting material, preventing oil stains from contacting the graphene heating elements and simplifying cleaning after grilling.

[0007] According to one example of the present invention, the graphene heating component is located below the heating surface, and the front of the graphene heating component for generating thermal radiation faces upward.

[0008] According to one example of this utility model, the baking pan body is made of heat-resistant infrared-transmitting material, and the outer wall and bottom of the baking pan body are provided with an external heat insulation layer. The entire baking pan body is made of heat-resistant infrared-transmitting material, which facilitates the processing.

[0009] According to one example of this invention, a reflective layer is provided between the outer heat insulation layer at the bottom of the baking pan body and the baking pan body itself. The reflective layer at the bottom can reflect downward-facing heat radiation back to the upward-facing heating surface, improving heat utilization.

[0010] According to one example of this invention, the baking pan body or the portion of the baking pan body located between the graphene heating component and the heating surface is made of transparent heat-resistant glass. On the one hand, transparent heat-resistant glass has good light transmittance and good heat resistance, while also being low in manufacturing cost. On the other hand, transparent heat-resistant glass also facilitates observation of the working status of the graphene heating component inside the baking pan body.

[0011] According to one example of this invention, multiple graphene heating components are arranged parallel to the heating surface below it. Based on the length and width of the heating surface, these multiple graphene heating components are laid parallel below it, ensuring that the upward-facing heat radiation generated by the multiple graphene heating components can evenly cover every area of ​​the heating surface, resulting in good overall temperature uniformity during the heating process. Furthermore, the damage to individual graphene heating components does not affect the use of the baking pan, and each graphene heating component can be visually inspected through the transparent baking pan body, facilitating timely detection and replacement of damaged components.

[0012] According to one example of this utility model, the baking pan body includes an upper body and a lower body that can be fixed together, and the upper and lower bodies together form a receiving cavity for accommodating a graphene heating component. The upper and lower bodies of the baking pan body can be engaged or disengaged, facilitating the installation and replacement of the graphene heating component.

[0013] According to one example of this utility model, the baking pan body is provided with a lid, the rear side of which is hinged to the rear side of the baking pan body. When the lid is closed on the baking pan body, the lid and the baking pan body together form a heating space for accommodating food, and the heating surface is located within the heating space. The lid can be placed on the food during the heating process, reducing heat loss within the heating space, thus allowing the food to heat up rapidly.

[0014] According to one example of this utility model, the lid is made of a transparent material, and the lid has a light-shielding outer cover, which is movably connected to the lid. On the one hand, the transparent lid makes it easy to observe the food and thus control its heating level; on the other hand, the light-shielding outer cover can cover the lid, further retaining radiant heat within the heating space.

[0015] According to one example of this invention, the graphene heating assembly includes a carrier made of infrared-transmitting material. The carrier has a sealed cavity inside, within which a graphene heating element is disposed. The graphene heating element consists of at least a substrate and a continuous graphene film attached to the substrate. Electrodes electrically connected to the graphene heating element are provided on the carrier. A graphene heating element with a continuous graphene film is grown on the substrate using existing graphene growth processes. This graphene heating element is placed within the sealed cavity of the carrier, allowing it to heat the surface when energized. Furthermore, the sealed cavity isolates the graphene heating element from external oxygen, enabling continuous heating at temperatures exceeding 100°C, thus meeting the requirements for such high-temperature heating. On the other hand, the sealed enclosure is transparent, allowing the graphene heating element to radiate heat externally via infrared radiation.

[0016] According to one example of the present invention, the side of the continuous graphene film facing away from the substrate has an infrared-transmitting layer.

[0017] According to one example of this invention, the substrate is made of an infrared-transmitting material, and an infrared reflective layer is provided on the back side of the substrate opposite to the continuous graphene film. Infrared rays from the back side of the continuous graphene film can be reflected back to the front side through the infrared reflective layer, thereby improving the heating efficiency of one side when heating an object using a graphene heating element on one side.

[0018] According to one example of the present invention, the infrared reflective layer has an inner heat insulation layer on the back side opposite to the substrate.

[0019] The above technical solution has the following advantages or beneficial effects: First, the graphene heating component mainly radiates heat to the food on the heating surface through an infrared-transmitting material component between the graphene heating component and the heating surface, resulting in high heating efficiency and uniform heating of the food on the heating surface. Second, the heating surface and the graphene heating component are separated by a component made of infrared-transmitting material, so the oil stains produced by the food on the heating surface during grilling will not contaminate or damage the graphene heating component, and the overall cleaning process of the grill pan is simple and convenient. In addition, since the part between the heating surface and the graphene heating component is further made of transparent heat-resistant glass, the interior can be easily observed through this transparent area. The graphene heating components are described in detail below. Firstly, the graphene heating element is a continuous graphene film grown on a substrate using a graphene growth process. This allows the graphene heating element to meet the requirements of high-temperature surface heating. Furthermore, the continuous graphene film within the heating element is placed in a sealed cavity within the carrier, isolating it from external oxygen, thus preventing oxidation and damage during high-temperature heating and improving its service life. Secondly, one side of the sheet-like graphene heating element has an infrared transmitting layer, and the other end has an infrared reflecting layer. This allows infrared rays from both sides of the continuous graphene film to be reflected onto the same side, improving the heating efficiency of infrared thermal radiation during single-sided heating.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the photothermal baking pan of this utility model.

[0022] Figure 2 for Figure 1 A diagram illustrating the explosion and disassembly of the Zhongguang heating baking pan.

[0023] Figure 3 This is a front view schematic diagram of the photothermal baking pan of this utility model.

[0024] Figure 4 for Figure 3 A cross-sectional view along the "AA" direction.

[0025] Figure 5 This is a schematic diagram of the graphene heating element in a photothermal baking pan.

[0026] Figure 6 for Figure 5 A schematic diagram of the explosive disassembly of the graphene heating component.

[0027] Figure 7 for Figure 5A schematic diagram of the internal structure of the graphene heating component.

[0028] Figure 8 for Figure 6 A magnified schematic diagram of the layer structure of the graphene heating element.

[0029] The components include: 1. Baking pan body; 1.1. Upper body; 1.2. Lower body; 1.3. Heating surface; 1.4. Reflective layer; 2. Lid; 3. Outer cover; 4. Graphene heating assembly; 4.1. Carrier; 4.1.1. Bottom cover; 4.1.2. Sealing cover; 4.2. Graphene heating element; 4.2.1. Substrate; 4.2.2. Continuous graphene film; 4.2.3. Infrared transmitting layer; 4.2.4. Infrared reflecting layer; 4.2.5. Inner heat insulation layer; 4.3. Electrode. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] The photothermal baking pan according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0032] This utility model provides a photothermal baking pan, as shown in the figure. It includes a baking pan body 1, and the top of the baking pan body 1 has a heating platform for placing food. The heating platform can be a horizontal heating surface 1.3 with a certain arc, or it can be a concave groove. The bottom of the groove serves as the heating surface 1.3 for heating the food. The interior of the baking pan body 1 is provided with one or more graphene heating components 4 for generating heat energy. The graphene heating components 4 are located below the heating surface 1.3, and the graphene heating components 4 are configured so that the heat generated by the graphene heating components 4 can be directed towards the heating surface 1.3. Thus, the heat generated by the graphene heating components 4 heats the food on the heating surface 1.3 mainly through thermal radiation. The portion of the baking pan body 1 between the graphene heating components 4 and the heating surface 1.3 is made of an infrared-transmitting material that allows thermal radiation to pass through and is heat-resistant.

[0033] In this embodiment, the photothermal baking pan refers to a baking pan that uses thermal radiation as the main heating method to heat the food.

[0034] In a preferred embodiment, the graphene heating component 4 is located below the heating surface 1.3, with the front side of the graphene heating component 4 used to generate heat radiation facing the heating surface 1.3, i.e., the front side of the graphene heating component 4 faces upward. Thus, the heat radiation generated by the graphene heating component 4 can irradiate upward and then pass through the heat-resistant infrared-transmitting material between the graphene heating component 4 and the heating surface 1.3 to irradiate the heating surface 1.3, thereby completing the heating of the food.

[0035] Preferably, in the above embodiment, the baking pan body 1 between the graphene heating component 4 and the heating surface 1.3 is made of a heat-transmitting infrared-transmitting material that allows heat radiation to pass through. The baking pan body 1 is equipped with an infrared-transmitting component made of a heat-resistant infrared-transmitting material. This infrared-transmitting component is embedded within the baking pan body 1 and positioned above the graphene heating component 4. The infrared-transmitting component faces away from the top surface of the graphene heating component 4, serving as the heating surface 1.3. The heat radiation generated by the graphene heating component 4 can pass through the infrared-transmitting component and irradiate the heating surface 1.3, thus radiating heat to the food on the heating surface 1.3. Simultaneously, in addition to the heat from infrared radiation, some of the heat generated by the graphene heating component 4 can be transferred to the heating surface 1.3 via heat conduction through the infrared-transmitting component, ultimately providing both radiative and conductive heating to the food on the heating surface 1.3.

[0036] In the above embodiment, if only the part between the graphene heating component 4 and the heating surface 1.3 in the baking pan body 1 is made of heat-resistant infrared-transmitting material, then there is a splicing gap between the infrared-transmitting material in this area and the rest of the baking pan body 1. That is, there is a splicing gap between the infrared-transmitting material and the baking pan body 1, which not only increases the assembly process, but also makes it easy for gaps to exist, allowing oil stains on the heating surface 1.3 to easily seep in through the gaps. Therefore, the preferred embodiment is that the entire baking pan body 1 is made of heat-resistant infrared-transmitting material, and the outer wall 1a and bottom 1b of the baking pan body 1 are provided with an external heat insulation layer.

[0037] Furthermore, a reflective layer 1.4 is provided between the outer heat insulation layer at the bottom of the baking pan body 1 and the baking pan body 1. Specifically, the reflective layer 1.4 is an electroplated metal layer located at the bottom of the baking pan body 1. The electroplated metal layer can reflect the downward radiation from the graphene heating component 4 and reflect the radiation back upward, thereby concentrating the heat radiation on the upper heating surface 1.3 and improving the utilization rate of heat radiation.

[0038] Based on the preferred embodiment described above, the portion between the graphene heating component 4 and the heating surface 1.3 is made of a heat-resistant infrared-transmitting material, including but not limited to silicon nitride, silicon carbide, alumina, and various transparent heat-resistant glasses.

[0039] Furthermore, the portion of the baking pan body 1 located between the graphene heating component 4 and the heating surface 1.3 is made of transparent heat-resistant glass. Alternatively, the entire baking pan body 1 may be made of transparent heat-resistant glass. Specifically, the heat-resistant glass may be microcrystalline glass, quartz glass, sapphire glass, fused silica glass, germanium-containing glass, etc.

[0040] like Figures 1-3 As shown, there are multiple graphene heating components 4, which are arranged below the heating surface 1.3 in a direction parallel to the heating surface 1.3. Specifically, the graphene heating component 4 has a tubular structure, and its length is basically consistent with the front-to-back length of the heating surface 1.3. The multiple graphene heating components 4 are arranged sequentially and at intervals along the left-to-right direction of the heating surface 1.3, so that the thermal radiation generated by all the graphene heating components 4 can cover the entire heating surface 1.3 along the left-to-right direction.

[0041] Based on the preferred embodiment described above, in order to better load and unload the graphene heating component 4, the baking pan body 1 includes an upper body 1.1 and a lower body 1.2 that can be vertically opposed and fixed to each other. The upper body 1.1 and the lower body 1.2 together form a receiving cavity for accommodating the graphene heating component 4. In this embodiment, since the baking pan body 1 adopts a split structure, the upper body 1.1 can be made of a heat-resistant infrared-transmitting material, specifically a transparent heat-resistant glass. The lower body 1.2 can be made of a heat-resistant infrared-transmitting material or a light-shielding heat-resistant material, depending on actual needs. Furthermore, the reflective layer 1.4 can be disposed on the bottom surface or the top surface of the lower body 1.2 to reflect the downward-facing heat radiation generated by the graphene heating component 4.

[0042] It should be understood that in the above embodiments, the portion between the heating surface 1.3 and the graphene heating component 4 is made of a heat-resistant infrared-transmitting material, preferably transparent heat-resistant glass. This allows the graphene heating component 4 to heat the heating surface 1.3 through thermal radiation. However, to maximize thermal energy utilization, it is not excluded that some of the heat generated by the graphene heating component 4 can be transferred to the heating surface 1.3 through thermal conduction. That is, most of the heat generated by the graphene heating component 4 is transferred to the food on the heating surface 1.3 through the transparent heat-resistant glass via thermal radiation, while a small portion of the heat is transferred to the food on the heating surface 1.3 through thermal conduction. This combined effect improves the heating efficiency of the food.

[0043] Based on the improvements of the above embodiments: the baking pan body 1 is provided with a lid 2, the rear side of the lid 2 is hinged to the rear side of the baking pan body 1, the lid 2 has a closed state covering the baking pan body 1 and an open state flipped outwards from the baking pan body 1, when the lid 2 is in the closed state covering the baking pan body 1, the lid 2 and the baking pan body 1 enclose a heating space for accommodating food, and the heating surface 1.3 is located within the heating space.

[0044] Furthermore, the cover 2 is made of a transparent material, specifically, it is made of transparent heat-resistant glass, such as microcrystalline glass. The cover 2 has a light-shielding outer cover 3, which is movably connected to the cover 2. Preferably, the rear of the outer cover 3 is hinged to the rear side of the cover 2.

[0045] Based on the preferred example of the graphene heating component 4 in the above embodiments: such as Figures 5-8 As shown, the graphene heating assembly 4 includes a carrier 4.1 with a sealed cavity inside. The carrier 4.1 is made of an infrared-transmitting material that allows heat radiation to pass through. Preferably, the carrier 4.1 is made of a transparent material, such as transparent glass. A graphene heating element 4.2 is disposed inside the carrier 4.1. The graphene heating element 4.2 consists of at least a substrate 4.2.1 and a continuous graphene film 4.2.2 attached to the substrate 4.2.1. An electrode 4.3 electrically connected to the graphene heating element 4.2 is disposed on the carrier 4.1. One end of the electrode 4.3 is electrically connected to the continuous graphene film 4.2.2, and the other end extends outside the carrier 4.1 and can be electrically connected to an external power source to provide the electrical energy required for heating the graphene heating element 4.2.

[0046] In the above embodiments, the continuous graphene film 4.2.2 refers to a continuous single-layer or multi-layer graphene film layer grown on the surface of the substrate 4.2.1 by methods such as chemical vapor deposition, epitaxial growth, or scanning electromagnetic induction ultrafast growth. The thickness of this continuous graphene film 4.2.2 is between a few nanometers and tens of nanometers. Since graphene is formed by growth, the layered graphene film grown on the substrate 4.2.1 is continuous, hence it is called a nanometer-thick continuous graphene film 4.2.2. Preferably, the preparation method disclosed in CN113840801B is used to form a nanometer-thick continuous graphene film 4.2.2 on the surface of the substrate 4.2.1. This nanoscale thickness continuous graphene film 4.2.2 differs from the graphene slurry layer formed by existing thick film coating processes. Graphene slurry layers are mostly millimeter-thick. Furthermore, since this graphene slurry layer is formed by first mixing graphene powder with a solvent to form a slurry, and then coating the slurry onto the substrate, although this graphene slurry layer is also a layered structure, its thickness is relatively large, and it is not a continuous graphene film.

[0047] Preferably, the sealed cavity is filled with a protective gas, specifically an inert gas, such as nitrogen.

[0048] Based on the preferred embodiment of the carrier 4.1, the carrier 4.1 includes a transparent sealing cover 4.1.2 and a bottom cover 4.1.1. The sealing cover 4.1.2 has a cylindrical structure, with the upper end sealed and the lower end having an opening connected to the bottom cover 4.1.1. The graphene heating element 4.2 is located above the bottom cover 4.1.1. The opening of the sealing cover 4.1.2 covers the graphene heating element 4.2 from top to bottom and forms a closed sealing cavity with the bottom cover 4.1.1. The graphene heating element 4.2 is located inside the sealing cavity. The graphene heating element 4.2 has two electrode plates, positive and negative. The two electrode plates are electrically connected to the terminals on the bottom cover 4.1.1. The terminals and the electrode plates together form an electrode 4.3, which is used to connect to an external power source to supply the electrical energy required for heating the graphene heating element 4.2.

[0049] In the above embodiment, the graphene heating element 4.2 is located inside the sealed cavity, and its external heating method is mainly far-infrared thermal radiation. For the sheet-like graphene heating element 4.2, in order to improve its heating efficiency on one side, the improvement in this embodiment is that an infrared transmitting layer 4.2.3 is provided on the side of the continuous graphene film 4.2.2 facing away from the substrate 4.2.1. The infrared transmitting layer 4.2.3 helps to effectively radiate the infrared rays generated by the continuous graphene film 4.2.2, allowing the infrared rays to pass smoothly through the heating source and improving the heating efficiency. The material of the infrared transmitting layer 4.2.3 includes, but is not limited to, quartz, zinc sulfide, zinc selenide, silicon, germanium, magnesium fluoride, calcium fluoride, barium fluoride, potassium bromide, and sapphire. In this embodiment, the side with the infrared transmitting layer 4.2.3 is the front side, which faces the location of the heating surface 1.3.

[0050] Preferably, the substrate 4.2.1 is made of a transparent material, and an infrared reflective layer 4.2.4 is provided on the back side of the substrate 4.2.1 opposite to the continuous graphene film 4.2.2.

[0051] Specifically, the substrate 4.2.1 is a transparent glass material.

[0052] Furthermore, the infrared reflective layer 4.2.4 has an inner heat insulation layer 4.2.5 on its back side opposite to the substrate 4.2.1.

[0053] like Figure 8As shown, the graphene heating element 4.2 includes a central sheet-like substrate 4.2.1. The substrate 4.2.1 is made of an infrared-transmitting material, preferably a transparent material. The top surface of the substrate 4.2.1 is the front surface, and a continuous graphene film 4.2.2 is provided on the front surface. An infrared-transmitting layer 4.2.3 is provided on the upper end of the continuous graphene film 4.2.2. An infrared reflective layer 4.2.4 is provided on the back surface of the substrate 4.2.1, and a heat-insulating layer 4.2.5 is provided below the infrared reflective layer 4.2.4. In this embodiment, the infrared reflective layer 4.2.4 can reflect the infrared rays emitted by the continuous graphene film 4.2.2 back, thereby concentrating heat on the front surface of the graphene heating element 4.2 and improving heating efficiency.

[0054] Based on the improvements of the above embodiments, the graphene heating sheet 4.2 can also be composed of an infrared transmitting layer 4.2.3, a substrate 4.2.1, a continuous graphene film 4.2.2, an infrared reflecting layer 4.2.4, and a heat insulation layer 4.2.5 stacked sequentially from top to bottom. In this case, the heat generated by the continuous graphene film 4.2.2 can also be radiated upwards after passing through the transparent substrate 4.2.1.

[0055] Preferably, both sides of the substrate 4.2.1 are provided with continuous graphene films 4.2.2. The graphene heating sheet 4.2 is arranged in the following order from top to bottom: infrared transmitting layer 4.2.3, continuous graphene film 4.2.2, substrate 4.2.1, continuous graphene film 4.2.2, infrared reflecting layer 4.2.4, and heat insulation layer 4.2.5. At this time, both sides of the substrate 4.2.1 are provided with continuous graphene films 4.2.2. The heat generated by the two continuous graphene films 4.2.2 can be radiated upwards after passing through the transparent substrate 4.2.1.

[0056] It should be noted that in the description of this utility model, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0057] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0062] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A heat-generating baking pan, characterized in that: The baking pan body (1) has a heating surface (1.3) on the top for placing food, and one or more graphene heating components (4) for generating heat are provided inside the baking pan body (1). The graphene heating components (4) are configured such that the generated heat radiation can be directed toward the location of the heating surface (1.3). The portion of the baking pan body (1) between the graphene heating components (4) and the heating surface (1.3) is made of an infrared-transmitting material that allows heat radiation to pass through and is heat-resistant.

2. The photothermal baking pan according to claim 1, characterized in that: The baking pan body (1) is made of heat-resistant infrared-transmitting material, and the outer wall and bottom of the baking pan body (1) are provided with an outer heat insulation layer.

3. The photothermal baking pan according to claim 2, characterized in that: A reflective layer is provided between the outer heat insulation layer at the bottom of the baking pan body (1) and the baking pan body (1).

4. The photothermal baking pan according to claim 1, characterized in that: The baking pan body (1) or the portion of the baking pan body (1) located between the graphene heating component (4) and the heating surface (1.3) is made of transparent heat-resistant glass.

5. The light-heat baking pan according to any one of claims 1-4, characterized in that: The graphene heating components (4) are multiple, and the multiple graphene heating components (4) are arranged below the heating surface (1.3) in a direction parallel to the heating surface (1.3).

6. The photothermal baking pan according to claim 5, characterized in that: The baking pan body (1) includes an upper body (1.1) and a lower body (1.2) that can be fixed together. The upper body (1.1) and the lower body (1.2) together form a cavity for accommodating the graphene heating component (4).

7. The photothermal baking pan according to claim 6, characterized in that: The baking pan body (1) is provided with a lid (2). The rear side of the lid (2) is hinged to the rear side of the baking pan body (1). When the lid (2) is closed on the baking pan body (1), the lid (2) and the baking pan body (1) enclose a heating space for accommodating food, and the heating surface (1.3) is located in the heating space.

8. The photothermal baking pan according to claim 7, characterized in that: The lid (2) is made of transparent material and has a light-blocking outer cover (3) on it. The outer cover (3) is movably connected to the lid (2).

9. The light-heat baking pan according to any one of claims 6-8, characterized in that: The graphene heating assembly (4) includes a carrier (4.1) made of infrared-transmitting material. The carrier (4.1) has a sealed cavity inside, in which a graphene heating element (4.2) is provided. The graphene heating element (4.2) is composed of at least a substrate (4.2.1) and a continuous graphene film (4.2.2) attached to the substrate (4.2.1). The carrier (4.1) is provided with an electrode (4.3) electrically connected to the graphene heating element (4.2).

10. The photothermal baking pan according to claim 9, characterized in that: The continuous graphene film (4.2.2) has an infrared-transmitting layer (4.2.3) on the side facing away from the substrate (4.2.1).

11. The photothermal baking pan according to claim 10, characterized in that: The substrate (4.2.1) is made of an infrared-transmitting material, and an infrared reflective layer (4.2.4) is provided on the back side of the substrate (4.2.1) opposite to the continuous graphene film (4.2.2).

12. The photothermal baking pan according to claim 11, characterized in that: The infrared reflective layer (4.2.4) has an inner heat insulation layer (4.2.5) on the back side away from the substrate (4.2.1).

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