Graphene heating module and heating device

Abstract

The invention discloses a graphene heating module and a heating device.The graphene heating module comprises a base and at least one graphene heating module, the base is provided with a fluid channel, the graphene heating module is fixedly connected with the base, the graphene heating module comprises a high-temperature-resistant frame, and a flow channel is formed in the middle of the high-temperature-resistant frame; a flow channel is formed in the high-temperature-resistant frame, a latticed graphene heating sheet covers the flow channel, the graphene heating sheet is fixedly connected with the high-temperature-resistant frame, the graphene heating sheet comprises latticed fiber cloth, a graphene film is arranged on the fiber cloth, and an electrode electrically connected with the graphene film is arranged on the high-temperature-resistant frame. According to the graphene heating module and the heating device provided by the invention, the grid-shaped structure is adopted, so that fluid can pass through each small hole, the contact area between the fluid and the graphene heating sheet is increased, and the heating efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of graphene heating, and in particular to a graphene heating module and a heating device. Background Art

[0002] When traditional heating devices heat fluids such as gases and liquids, the heating components mostly used are electric heating wires, ceramic heating elements, metal heating tubes, electric heating films, etc. With the development of graphene technology, graphene as a heating component has become an important development direction of existing heating devices. However, the application of graphene in the heating field is still insufficient. On the one hand, the existing graphene heating sheets are generally made by coating graphene powder. Such graphene heating sheets will have the problem of powder falling during use, and the application field is relatively limited; on the other hand, the existing graphene heating sheets still follow the usage habits of traditional heating components. They use a whole sheet structure, and the thermal contact area between the heated medium and the heating sheet is small, and the heating efficiency is low. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art to at least a certain extent: to provide a graphene heating module and a heating device, the grid structure adopted by which can allow fluid to pass through each small hole, thereby increasing the contact area between the fluid and the graphene heating plate, thereby improving the heating efficiency.

[0004] To this end, one object of the present invention is to provide a graphene heating module, including a high temperature resistant frame, a flow channel in the middle of the high temperature resistant frame, a mesh graphene heating sheet covered on the flow channel, the graphene heating sheet is fixedly connected to the high temperature resistant frame, the graphene heating sheet includes a mesh fiber cloth, a graphene film is provided on the fiber cloth, and an electrode electrically connected to the graphene film is provided on the high temperature resistant frame. The substrate in the graphene heating sheet is a mesh fiber cloth, a graphene film is prepared on the mesh fiber cloth, and due to the mesh shape, the fluid can pass through the mesh holes of the fiber cloth, and at this time, the graphene film and the fluid in the mesh holes are heat-transferred, thereby achieving the purpose of heating the fluid, and the heating efficiency is high.

[0005] According to an example of the present invention, the high temperature resistant frame is located at the position of the flow channel and is concave in the thickness direction to form a mounting groove, and the graphene heating sheet is embedded in the mounting groove and covers the flow channel. The mounting groove can be used to conveniently install the graphene heating sheet, so that the graphene heating sheet and the high temperature resistant frame form a sheet-shaped graphene heating module.

[0006] According to an example of the present invention, a pressure strip is provided in the installation groove, and the pressure strip is detachably connected to the installation groove, and the graphene heating sheet is clamped between the pressure strip and the groove bottom of the installation groove. By disassembling the pressure strip and the installation groove, the graphene heating sheet can be easily installed.

[0007] According to an example of the present invention, the pressure strip is made of a conductive material, and one end of the pressure strip extends horizontally outside the high temperature resistant frame. One end of the pressure strip extends outside the high temperature resistant frame as a power terminal electrically connected to an external power source.

[0008] According to an example of the present invention, the graphene heating sheet has a plurality of small holes for fluid to pass through, and the diameter of the small holes is 1 mm to 10 mm. Setting the diameter of the small holes to 1 mm to 10 mm can ensure good fluid permeability and ensure the area of ​​the graphene film, thereby improving the heating efficiency.

[0009] To this end, an object of the present invention is to provide a graphene heating device, comprising a base and at least one graphene heating module, the base having a fluid channel, the graphene heating module being fixedly connected to the base, and the fluid channel on the base being connected to the flow channel in the graphene heating module. The base can be conveniently connected to an external device, the fluid is fed into the flow channel through the fluid channel, and the fluid is heated in the flow channel of the graphene heating module. Multiple graphene heating modules can be stacked in sequence according to heating needs, thereby improving the overall heating efficiency.

[0010] According to an example of the present invention, there are multiple graphene heating modules, each of which is stacked in sequence along the thickness direction, and the entire flow channel formed by the flow channels on each graphene heating module is connected to the fluid channel.

[0011] According to an example of the present invention, a positioning member for limiting the position of the first graphene heating module is provided on the top of the base. The positioning member can facilitate the positioning between the first graphene heating module and the base, and facilitate the matching of the fluid channel and the flow channel during the installation of the two.

[0012] According to an example of the present invention, the distance between any two adjacent graphene heating plates is 5 mm to 100 mm.

[0013] According to an example of the present invention, a conductive sheet is provided on the base, and the conductive sheet is electrically connected to the electrodes in each graphene heating module. The electrodes in each graphene heating module are electrically connected through the conductive sheet, and the external power supply can provide power to each graphene heating module through the conductive sheet.

[0014] According to an example of the present invention, the graphene film is a continuous graphene film prepared on a fiber cloth by graphene growth. The graphene film directly grown on the surface of the fiber cloth has a strong adhesion, thus avoiding the problem of easy falling off during use.

[0015] The above technical scheme has the following advantages or beneficial effects: first, a grid-shaped fiber cloth is used as a substrate, and graphene is prepared on the fiber cloth to form a grid-shaped graphene film. The grid-shaped graphene heating plate thus formed can allow the fluid to pass through each grid hole, and during the passage, the graphene film is energized to complete the heating of the fluid. In this process, the contact area between the fluid and the graphene film is large, so the heating efficiency is high, the energy consumption is low, and the overall heating temperature uniformity is good. Secondly, multiple graphene heating modules can be stacked and fixed on the base in a stacked manner, so that the number of graphene heating modules can be arbitrarily increased or decreased according to the actual heating power requirements, and the versatility is strong; finally, one end of the pressing sheet in each graphene heating module is led out and fixed with the conductive sheet through silver paste to form a stable electrical connection, which is convenient for supplying the electric energy required for heating each graphene heating module after being electrically connected to an external power supply.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the graphene heating module of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the explosion of the graphene heating module.

[0019] Figure 3 It is a schematic structural diagram of the graphene heating device of the present invention.

[0020] Figure 4 for Figure 3 Schematic diagram of the internal structure of the graphene heating device.

[0021] Figure 5 for Figure 3 Schematic diagram of the explosion of the graphene heating device.

[0022] Figure 6 for Figure 3 Schematic top view of the graphene heating device.

[0023] Figure 7 for Figure 6 Section view along the “AA” direction.

[0024] Figure 8for Figure 7 A three-dimensional schematic diagram of a mid-section view.

[0025] Fig. 9 This is an enlarged schematic diagram of the internal structure of the graphene heater.

[0026] Among them, 1. high temperature resistant frame; 1.1. mounting groove; 2. flow channel; 3. graphene heating plate; 3.1. fiber cloth; 3.2. graphene film; 3.3. small hole; 4. electrode; 5. pressure strip; 6. base; 7. fluid channel; 8. positioning piece; 9. conductive sheet; 9.1. plug-in sheet; 10. slot; 11. long bolt. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] A graphene heating module and a heating device according to an embodiment of the present invention are described in detail below with reference to the accompanying drawings.

[0029] by Figure 6 The plane formed by the width and length of the high temperature resistant frame 1 shown is a horizontal plane, and each direction on the horizontal plane is a horizontal direction, with each direction perpendicular to Figure 6 The paper surface shown is the thickness direction, or height direction.

[0030] The present invention provides a graphene heating sheet 3, comprising a grid-shaped fiber cloth 3.1, the fiber cloth 3.1 having a plurality of small holes 3.3 for fluid to pass through, all of the small holes 3.3 being evenly arranged on the fiber cloth 3.1, and the fiber cloth 3.1 being provided with a graphene film 3.2 prepared on the fiber cloth 3.1, the graphene film 3.2 being located on the surface of the fiber cloth, thereby forming a grid-shaped graphene heating sheet 3 with small holes 3.3.

[0031] The fluid in the above embodiments includes but is not limited to gas and liquid, wherein the gas may be air or non-conductive gas.

[0032] The graphene heating sheet 3 in the above embodiment is in a grid shape, and the grid-shaped graphene heating sheet 3 has a plurality of small holes 3.3 for fluid to pass through, and the small holes 3.3 are evenly arranged on the graphene heating sheet 3 along the horizontal direction.

[0033] Preferably, the diameter of the small hole 3.3 is 1 mm to 10 mm.

[0034] Preferably, the mesh-shaped fiber cloth 3.1 is an inorganic fiber cloth, which includes but is not limited to glass fiber, quartz fiber, mica fiber, basalt fiber, alumina ceramic fiber, boron nitride fiber (BN fiber). The thickness of the fiber cloth 3.1 is 0.1 mm to 1 mm. Preferably, the thickness of the fiber cloth 3.1 is 0.1 mm or 0.2 mm.

[0035] Based on one of the preferred examples of the graphene film 3.2 on the fiber cloth 3.1 in the above embodiment: A grid-shaped fiber cloth 3.1 is selected as the substrate of the graphene heating plate 3, and graphene slurry is sprayed on the fiber cloth 3.1 to form a graphene film 3.2. The fiber cloth 3.1 and the graphene film 3.2 on the fiber cloth 3.1 constitute the graphene heating plate 3.

[0036] Based on the second preferred example of the graphene film 3.2 on the fiber cloth 3.1 in the above embodiment: A mesh-shaped fiber cloth 3.1 is selected as the substrate of the graphene heating sheet 3, and a graphene film 3.2 is grown on the fiber cloth 3.1 in a graphene growth manner. The graphene film 3.2 is a continuous graphene film 3.2, and the fiber cloth 3.1 and the continuous graphene film 3.2 on the fiber cloth 3.1 constitute the graphene heating sheet 3. Compared with one of the above preferred examples, the graphene film formed by the graphene growth manner is a continuous layered structure, and the graphene film growth process will not block the small holes in the mesh-shaped fiber cloth 3.1, especially for the fiber cloth 3.1 with a small hole diameter.

[0037] Specifically, the continuous graphene film 3.2 prepared on the fiber cloth 3.1 by graphene growth in this embodiment refers to a continuous graphene film formed on the fiber cloth 3.1 by graphene growth, wherein the continuous graphene film growth includes growing a continuous single-layer or multi-layer graphene film layer on the surface of the fiber cloth 3.1 by chemical vapor deposition, epitaxial growth, scanning electromagnetic induction ultrafast growth, etc. The thickness of the continuous graphene film is between a few nanometers and tens of nanometers, and since graphene is formed by growth, the layered graphene film grown on the fiber cloth 3.1 is continuous, so it is called a continuous graphene film with nanometer-level thickness, or a nanometer-level continuous graphene film 3.2. Preferably, the preparation method disclosed in Publication No. CN113840801A is used to form a nanometer-level continuous graphene film 3.2 on the surface of the fiber cloth 3.1. The nanoscale continuous graphene film 3.2 is different from the graphene slurry layer formed by the above-mentioned process of spraying graphene slurry or the existing thick film coating process. The graphene slurry layer made by the processes such as spraying or scraping is mostly millimeter-level thick, and because the graphene slurry layer is first formed by mixing the graphene powder with a solvent, and then the slurry is coated on the substrate, although the graphene slurry layer is also a layered structure, its thickness is thicker, and the graphene particles are not continuous graphene films. In addition, the graphene film formed by the coating of the graphene slurry needs to be mixed with various solvents such as adhesives, and as the temperature increases, this type of graphene film will have the problem of falling powder. In the present embodiment, since the graphene film 3.2 is a continuous graphene film 3.2 formed by the growth of graphene, it does not have the problem of falling powder as the temperature increases, and the present embodiment is particularly suitable for use scenarios with higher heating temperatures.

[0038] Based on the graphene heating sheet 3 in the above embodiment, the present invention provides a graphene heating module, such as Figure 1 and Figure 2 As shown, it includes a high temperature resistant frame 1, and the high temperature resistant frame 1 has a central channel in the middle position along the horizontal direction. The central channel serves as a flow channel 2 for fluid to pass through. The flow channel 2 penetrates the upper end face and the lower end face of the high temperature resistant frame 1 along the thickness direction. The above-mentioned grid-shaped graphene heating sheet 3 covers the flow channel 2, and the outer edge of the graphene heating sheet 3 is fixedly connected to the high temperature resistant frame 1. The high temperature resistant frame 1 is provided with an electrode 4 electrically connected to the graphene film 3.2 in the graphene heating sheet 3. The high temperature resistant frame 1 in this embodiment is a sheet structure.

[0039] Preferably, the high temperature resistant frame 1 is made of insulating and heat resistant materials such as plastic and acrylic.

[0040] Preferably, the graphene heating sheet 3 is a grid-like structure as a whole, or the graphene heating sheet 3 is a grid-like structure in the area corresponding to the flow channel 2 .

[0041] like Figure 2 As shown, the high temperature resistant frame 1 is located at the position of the flow channel 2 and is concave in the thickness direction to form a mounting groove 1.1. The graphene heating plate 3 is embedded in the mounting groove 1.1 and covers the flow channel 2.

[0042] Furthermore, a pressure strip 5 is provided in the installation groove 1.1, and the pressure strip 5 is detachably connected to the installation groove 1.1, and the graphene heating sheet 3 is clamped between the pressure strip 5 and the bottom of the installation groove 1.1. Specifically, there are two pressure strips 5, and the two pressure strips 5 are symmetrically arranged on both sides of the graphene heating sheet 3, and each pressure strip 5 is fixed to the bottom of the installation groove 1.1 by screw threads, so that the positions of both sides of the graphene heating sheet 3 are fixed to the installation groove 1.1 by the pressure strips 5, and the graphene heating sheet 3 covers the flow channel 2 and remains in a straight state.

[0043] In order to supply power to the graphene heating sheet 3, the graphene heating sheet 3 is provided with an electrode 4, which is a sheet-shaped electrode sheet, which is stacked on the graphene heating sheet 3 and pressed by a pressure strip 5. The external power supply is electrically connected to the electrode 4, thereby supplying power to the graphene film 3.2 on the graphene heating sheet 3. Further, the pressure strip 5 is made of a conductive material, and one end of the pressure strip 5 extends horizontally to the outside of the high temperature resistant frame 1. The portion of the pressure strip 5 exposed outside the high temperature resistant frame 1 serves as a power terminal for electrically connecting to an external power supply.

[0044] Based on the preference of the above-mentioned graphene heating module, the present invention provides a graphene heating device, comprising a base 6 and at least one graphene heating module, the base 6 having a fluid channel 7, the graphene heating module being fixedly connected to the base 6, and the fluid channel 7 on the base 6 being connected to the flow channel 2 in the graphene heating module.

[0045] Furthermore, there are multiple graphene heating modules, each of which is stacked in sequence along the thickness direction, and the flow channels 2 on any two adjacent graphene heating modules correspond to each other along the thickness direction, so that the flow channels 2 on all graphene heating modules form a complete flow channel along the thickness direction, and the entire flow channel 2 formed by the flow channels 2 on each graphene heating module is connected to the fluid channel 7. Therefore, the fluid fed from the fluid channel 7 of the base 6 is heated by the graphene film 3.2 when passing through the flow channel 2 on the graphene heating module, and the graphene film 3.2 on each layer of the graphene heating module heats the fluid.

[0046] Specifically, the number of the graphene heating modules is two, three, four, five, six, seven, eight, nine or ten.

[0047] Preferably, the fluid is air, the fluid channel 7 on the base 6 is an air inlet channel, and the heating area of ​​a single graphene heating sheet 3 in each graphene heating module is 100×100mm. When 5 graphene heating modules are selected and the spacing between graphene heating sheets in adjacent heating modules is 20mm, when the air inlet speed of the fluid channel 7 on the base 6 is 8m / s, the air temperature at the air outlet after passing through each graphene heating module can be raised to 50°C within 130s (the stable temperature is 45-50°C for long-term use), and the overall power of the heating part is 300W. This power value is significantly lower than the power value required to use a resistance wire to heat a corresponding air volume to a corresponding temperature in the prior art.

[0048] In the above embodiment, the flow channel 2 on the graphene heating module needs to be aligned with the fluid channel 7. Therefore, the improvement of this embodiment is that: a positioning member 8 for limiting the position of the first graphene heating module is provided on the top of the base 6. Specifically, Figure 5 As shown, the positioning member 8 includes a plurality of bars arranged on the top surface of the base 6, and the bars are combined to form an installation space for embedding the graphene heating module, thereby enabling the first graphene heating module to be embedded in the installation space, so that the flow channel 2 on the first graphene heating module is accurately aligned with the fluid channel 7.

[0049] A plurality of bolt holes are provided on the high temperature resistant frame 1 in each graphene heating module. The graphene heating modules are stacked in the thickness direction, and the bolt holes on the graphene heating modules are fastened by long bolts 11 .

[0050] In the above embodiment, the thickness of the high temperature resistant frame 1 is adjusted and / or the spacing between two adjacent high temperature resistant frames 1 is changed so that the spacing between any two adjacent graphene heating sheets 3 is 5 mm to 500 mm, where mm is a millimeter unit. Preferably, the spacing between the two adjacent graphene heating sheets 3 is any one of 5 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, 350 mm, 400 mm, 450 mm, and 500 mm.

[0051] The base 6 is provided with a conductive sheet 9, which is a copper sheet. The conductive sheet 9 is electrically connected to the electrode 4 in each graphene heating module. Specifically, the pressure strip 5 is made of a conductive material, and the pressure strip 5 presses the electrode sheet and the graphene film 3.2, so that the graphene film 3.2, the electrode 4 and the pressure strip 5 are electrically connected. One end of the pressure strip 5 extends to the outside of the high temperature resistant frame 1 in the horizontal direction, and the part of the pressure strip 5 exposed outside the high temperature resistant frame 1 is bent to form an electrical terminal. The conductive sheet 9 is fixed and electrically connected to the electrical terminals on each pressure strip 5 by silver paste, and the conductive sheet 9 is configured to be electrically connected to an external power supply. In this embodiment, the pressure strip 5 is a pressure strip 5 made of stainless steel.

[0052] Based on the preference of the above-mentioned conductive sheet 9, the portion of the pressure strip 5 exposed outside the high temperature resistant frame 1 in the horizontal direction is bent downward to form a wiring terminal, and a slot 10 is left between the wiring terminal and the outer wall of the high temperature resistant frame 1. The conductive sheet 9 is provided with a plug 9.1 at a position corresponding to each slot 10. The plug 9.1 and the conductive sheet 9 are an integrated structure, and each plug 9.1 is inserted into its corresponding slot 10 in the horizontal direction.

[0053] It should be understood that the graphene heating plate used in the above embodiment is prepared by growing graphene film on a substrate to form a graphene film layer of nanometer thickness. If the temperature of the graphene heating plate after continuous heating exceeds 110°C, it is necessary to further consider anti-oxidation measures for the graphene film layer. However, in the case of a temperature below 110°C, especially in a heating scenario slightly above room temperature, this anti-oxidation measure can be ignored or considered less. In the graphene heating device of the above embodiment, the target heating temperature is 50°C. In this working scenario, the graphene heating plate does not need to consider anti-oxidation. However, when the fluid driven by the fan stops providing fluid, the fluid fluidity of the space where the graphene heating plate is located decreases or even stops the flow of fluid. At this time, the local temperature of the space where the graphene heating plate is located will rise rapidly, which is easy to cause oxidation problems of the graphene heating plate. For this reason, based on the graphene heating module and graphene heating device in the above embodiment, the present invention proposes a control method for a heating device: Before the fan device for providing air is shut down, the graphene heating module is powered off and stops heating before the shutdown time of the fan device. The interval time can be a preset interval time. The fan device and the graphene heating plate are electrically connected to the controller respectively. After the controller receives the stop working instruction, it controls the graphene heating plate to power off and stop heating. After the timing module inside the controller reaches the interval time, the controller controls the fan device to shut down.

[0054] Alternatively, a temperature sensor for detecting the temperature of the space where the graphene heating plate is located is provided on the graphene heating module and / or the graphene heating device. The temperature sensor is communicatively connected to the controller, and the fan device and the graphene heating plate are electrically connected to the controller respectively. After the controller receives a stop working instruction, the graphene heating plate is powered off and stops heating. If the temperature sensor is higher than the set standard temperature, the fan device continues to work. If the temperature sensor drops to the set standard temperature, the controller receives the detection signal of the temperature sensor and controls the fan device to stop.

[0055] It should be noted here that 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 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0061] For those skilled in the art, various changes and modifications will undoubtedly be obvious after reading the above description. Therefore, the attached claims should be regarded as covering all changes and modifications of the true intent and scope of the present invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to still be within the intent and scope of the present invention.

Claims

1. A graphene heating module, characterized in that: The invention comprises a high temperature resistant frame (1), wherein a flow channel (2) for fluid to pass through is provided in the middle of the high temperature resistant frame (1), the flow channel (2) is covered with a grid-shaped graphene heating sheet (3), the graphene heating sheet (3) is fixedly connected to the high temperature resistant frame (1), the graphene heating sheet (3) comprises a grid-shaped fiber cloth (3.1), a graphene film (3.2) is provided on the fiber cloth (3.1), and an electrode (4) electrically connected to the graphene film (3.2) is provided on the high temperature resistant frame (1).

2. The graphene heating device according to claim 1, characterized in that: The graphene film (3.2) is a continuous graphene film (3.2) prepared on the fiber cloth (3.1) in a graphene growth manner.

3. The graphene heating module according to claim 1 or 2, characterized in that: The high temperature resistant frame (1) is located at the position of the flow channel (2) and is concave inwardly along the thickness direction to form a mounting groove (1.1), and the graphene heating plate (3) is embedded in the mounting groove (1.1) and covers the flow channel (2).

4. The graphene heating module according to claim 3, characterized in that: A pressure strip (5) is provided in the installation groove (1.1), the pressure strip (5) is detachably connected to the installation groove (1.1), and the graphene heating plate (3) is clamped between the pressure strip (5) and the bottom of the installation groove (1.1).

5. The graphene heating module according to claim 4, characterized in that: The pressure strip (5) is made of a conductive material, and one end of the pressure strip (5) extends horizontally to the outside of the high temperature resistant frame (1).

6. The graphene heating module according to claim 1, characterized in that: The graphene heating plate (3) is provided with a plurality of small holes (3.3) for fluid to pass through, and the diameter of the small holes (3.3) is 1 mm to 10 mm.

7. A graphene heating device, characterized in that: The invention comprises a base (6) and at least one graphene heating module according to any one of claims 1 to 6, wherein the base (6) has a fluid channel (7), the graphene heating module is fixedly connected to the base (6), and the fluid channel (7) on the base (6) is connected to a flow channel (2) in the graphene heating module.

8. The graphene heating device according to claim 7, characterized in that: There are a plurality of graphene heating modules, each of which is stacked in sequence along the thickness direction, and the entire flow channel (2) formed by the flow channels (2) on each graphene heating module is connected to the fluid channel (7).

9. The graphene heating device according to claim 8, characterized in that: A positioning piece (8) for limiting the position of the first graphene heating module is provided on the top of the base (6).

10. The graphene heating device according to claim 9, characterized in that: The distance between any two adjacent graphene heating sheets (3) is 5 mm to 100 mm.

11. The graphene heating device according to claim 9, characterized in that: A conductive sheet (9) is provided on the base (6), and the conductive sheet (9) is electrically connected to the electrodes (4) in each graphene heating module.

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