Graphene heating device

Abstract

The utility model relates to a graphene heating device. The graphene heating device comprises a supporting assembly, a graphene heating assembly and an electrode conduction assembly. The supporting assembly comprises a first supporting frame and a second supporting frame which are arranged on the two opposite sides of the graphene heating assembly respectively. The graphene heating assembly comprises a carrier plate, a graphene heating film, a conductive electrode and an insulating protection layer, the upper surface of the conductive electrode is electrically connected with part of the lower surface of the graphene heating film, and the electrode conduction assembly comprises a conductive elastic piece, a wiring terminal and a terminal limiting guide rail. One end of the conductive elastic sheet is fixed on the terminal limiting guide rail and is connected with the wiring terminal through the terminal limiting guide rail, and the other end of the conductive elastic sheet is electrically connected with the conductive electrode. All the components in the graphene heating device cooperate with one another, and the curing effect of the device and the structural stability of the device working at high temperature for a long time are jointly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heating device especially relates to a graphene heating device. BACKGROUND

[0002] High-precision industrial curing refers to the process of curing materials under precise conditions through specific techniques and processes in industrial production to achieve high precision and good performance. Graphene has excellent thermal and electrical conductivity, fast thermal response, efficient temperature control, and good flexibility, making it a key focus in high-precision industrial curing. However, existing graphene heating technology faces a series of technical bottlenecks in high-precision industrial curing conditions.

[0003] Firstly, during long-term high-temperature curing, graphene heating film may oxidize and reduce electrical conductivity, leading to unstable temperature control. Traditional graphene heating devices do not optimize and control the infrared wavelength of graphene heating film, making it difficult to fully utilize its infrared radiation effect, resulting in poor curing efficiency and effect.

[0004] Secondly, current curing systems mainly use conductive contacts for power supply. However, conductive contacts are easily affected by oxidation, leading to unstable electrical conductivity and further affecting the long-term reliability of the system.

[0005] Furthermore, for the insulation buffer of graphene heating systems in high-temperature environments, current methods widely use mica sheets, high-silica cloth, and fiberglass inorganic insulation materials, which can easily produce debris and introduce impurities, negatively affecting the cleanliness of products during industrial curing. Moreover, the fixation of components in existing heating devices often relies on resin materials, which can easily age and fail under high-temperature conditions, making it difficult to meet long-term use requirements. In high-temperature curing processes, the connection between components may become loose or weakened, leading to poor stability and reliability of the heating device during use.

[0006] In addition, since heating devices are usually composed of various materials, including graphene, insulation materials, and various metal connectors, the thermal expansion coefficients of different materials differ significantly. In long-term curing processes under high-temperature cycles, these differences can cause thermal stress between components, leading to deformation such as stretching or shrinking. This not only damages the structural integrity of the heating device but also further interferes with the heat conduction path and electrical connection, causing gradual degradation of device performance, reducing its service life, and increasing equipment maintenance costs, which becomes a key factor restricting the development of high-precision industrial curing.

[0007] Therefore, how to improve the curing effect of the graphene heating device while ensuring the overall structural stability of the heating device under long-term high-temperature working conditions has become a problem to be solved at present. Utility model content

[0008] To solve the above technical problems, the utility model discloses a graphene heating device. The graphene heating device is provided with a supporting assembly, a graphene heating assembly and an electrode conduction assembly, which are mutually coordinated to improve the curing effect of the graphene heating device, optimize the overall structural stability of the heating device under long-term high-temperature working conditions and prolong the service life of the heating device.

[0009] To achieve the purpose, the utility model adopts the following technical scheme:

[0010] A graphene heating device, which comprises a supporting assembly, a graphene heating assembly and an electrode conduction assembly.

[0011] The supporting assembly comprises a first supporting frame and a second supporting frame, and the first supporting frame and the second supporting frame are arranged on opposite sides of the graphene heating assembly respectively.

[0012] The graphene heating assembly comprises a carrier plate, a graphene heating film, a conductive electrode and an insulating protective layer, and the carrier plate, the graphene heating film and the conductive electrode are arranged in sequence from top to bottom, the insulating protective layer covers the exposed outer surface of the graphene heating film and the conductive electrode, and the upper surface of the conductive electrode is electrically connected with part of the lower surface of the graphene heating film.

[0013] The electrode conduction assembly comprises a conductive elastic sheet, a wiring terminal and a terminal limiting guide rail, the terminal limiting guide rail is arranged on the inner side of the first supporting frame or the second supporting frame, the wiring terminal is arranged on the outer side of the first supporting frame or the second supporting frame, one end of the conductive elastic sheet is fixed on the terminal limiting guide rail and connected with the wiring terminal through the terminal limiting guide rail, and the other end of the conductive elastic sheet is electrically connected with the lower surface of the conductive electrode.

[0014] In the utility model, the "inner side" in the "inner side of the first supporting frame or the second supporting frame" refers to the side on which the first supporting frame and the second supporting frame are close to each other, and the "outer side" in the "wiring terminal arranged on the outer side of the first supporting frame or the second supporting frame" refers to the side on which the first supporting frame and the second supporting frame are away from each other.

[0015] In the utility model, " the insulating protective layer covers the exposed outer surface of the graphene heating film and the conductive electrode" refers to, the insulating protective layer covers the lower surface of graphene heating film and conductive electrode far from the side of carrier plate and all side of graphene heating film and conductive electrode, the insulating protective layer covers the lower surface of graphene heating film and conductive electrode far from the side of carrier plate specifically: the insulating protective layer is set on the lower surface of graphene heating film far from the side of carrier plate and not set with conductive electrode, and is set on the lower surface outside the area of conductive electrode and electrically connected with conductive spring leaf, the insulating protective layer is set on all side of graphene heating film and conductive electrode specifically: the insulating protective layer is coated on all side of graphene heating film and conductive electrode, and with carrier plate, graphene heating film and conductive electrode are encapsulated.

[0016] As the preferred technical scheme of the utility model, the relative two ends of the graphene heating assembly along the length direction are arranged in the first support frame and the second support frame respectively.

[0017] Preferably, the first support frame and the second support frame are both C-shaped supports.

[0018] Preferably, the first support frame and the second support frame respectively independently include an upper horizontal arm, a lower horizontal arm, and a vertical wall between the upper horizontal arm and the lower horizontal arm.

[0019] As the preferred technical scheme of the utility model, the lower surface of the upper horizontal arm of the first support frame and the second support frame is arranged in close contact with the part of the upper surface of the carrier plate far from the graphene heating film.

[0020] Preferably, a reinforcing rib is arranged between the lower horizontal arm of the first support frame and the lower horizontal arm of the second support frame, and the reinforcing rib includes a plurality of connecting rods and / or connecting plates.

[0021] The utility model adopts C-shaped support and reinforcing rib arranged between C-shaped supports to improve the overall structural strength and thermal stability.

[0022] As the preferred technical scheme of the utility model, the surface of the graphene heating film is provided with a first air-avoiding groove and a second air-avoiding groove with mutually opposite opening directions in the length direction, the first air-avoiding groove and the second air-avoiding groove are arranged close to the first support frame and the second support frame respectively, and the first air-avoiding groove and the second air-avoiding groove independently penetrate the graphene heating film along the thickness direction of the graphene heating film.

[0023] As the preferred technical scheme of the utility model, the conductive electrode includes a first conductive electrode and a second conductive electrode.

[0024] Preferably, the first conductive electrode and the second conductive electrode are both L-shaped structures and are diagonally arranged on the surface of the graphene heating film.

[0025] The first conductive electrode and the second conductive electrode of the L-shaped structure are adopted in the utility model, and the stable electrothermal performance and uniform heating of the graphene heating film are achieved, and the thermal efficiency is improved.

[0026] Preferably, the L-shaped structure of the first conductive electrode starts from the side of the graphene heating film close to the first support frame and ends at the second air-avoiding groove; and the L-shaped structure of the second conductive electrode starts from the side of the graphene heating film close to the second support frame and ends at the first air-avoiding groove.

[0027] As a preferred technical scheme of the utility model, the infrared transmittance of the carrier plate to the graphene heating film is 40% or more, for example, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75% or 80% and the like.

[0028] Preferably, the carrier plate comprises any one of quartz glass, borosilicate glass, aluminosilicate glass or high-aluminum glass.

[0029] Preferably, the carrier plate further comprises any one or a combination of at least two of alkali metal oxide material, alkaline earth metal oxide material or nitride material.

[0030] Preferably, the material of the insulation protective layer comprises inorganic matrix material and expansion coefficient regulator.

[0031] Preferably, the graphene heating film is a graphene heating film doped with a dopant.

[0032] As a preferred technical scheme of the utility model, the electrode conduction assembly comprises a first electrode conduction assembly and a second electrode conduction assembly, the first electrode conduction assembly is arranged close to the first support frame, and the second electrode conduction assembly is arranged close to the second support frame.

[0033] Preferably, the first electrode conduction assembly comprises a first conductive spring piece, a first wiring terminal and a first terminal limiting guide rail.

[0034] Preferably, the first terminal limiting guide rail is arranged on the inner side of the first support frame, the first wiring terminal is arranged on the outer side of the first support frame, one end of the first conductive spring piece is fixed on the first terminal limiting guide rail and connected with the first wiring terminal through the first terminal limiting guide rail, and the other end of the first conductive spring piece is electrically connected with the lower surface of the first conductive electrode.

[0035] Preferably, the second electrode conduction assembly comprises a second conductive spring, a second terminal and a second terminal limiting guide rail.

[0036] Preferably, the second terminal limiting guide rail is arranged on the inner side of the second support frame, the second terminal is arranged on the outer side of the second support frame, one end of the second conductive spring is fixed on the second terminal limiting guide rail and connected with the second terminal through the second terminal limiting guide rail, and the other end of the second conductive spring is electrically connected with the lower surface of the second conductive electrode.

[0037] As a preferred technical scheme of the present application, a first top wire is arranged on the vertical wall of the first support frame, and the two ends of the first top wire are respectively connected with the first terminal and the first terminal limiting guide rail.

[0038] Preferably, a second top wire is arranged on the vertical wall of the second support frame, and the two ends of the second top wire are respectively connected with the second terminal and the second terminal limiting guide rail.

[0039] Preferably, a first fixing component is further arranged on the lower horizontal arm of the first support frame and used for fixing the first terminal limiting guide rail.

[0040] Preferably, a second fixing component is further arranged on the lower horizontal arm of the second support frame and used for fixing the second terminal limiting guide rail.

[0041] As a preferred technical scheme of the present application, first and second insulation grooves are arranged at opposite ends of the insulation protection layer arranged below the graphene heating film and the conductive electrode, and the first and second insulation grooves are arranged close to the first and second support frames respectively.

[0042] The insulation grooves arranged in the insulation protection layer are used for preventing the abrasion of the insulation layer caused by the metal components under vibration conditions and the resulting conductive failure.

[0043] Preferably, the first and second insulation grooves independently penetrate the insulation protection layer along the thickness direction of the insulation protection layer.

[0044] Preferably, the first insulation groove and the first emptying groove are correspondingly arranged in the direction of the graphene heating assembly layering.

[0045] Preferably, the second insulation groove and the second emptying groove are correspondingly arranged in the direction of the graphene heating assembly layering.

[0046] As a preferred technical scheme of the present application, the support assembly further comprises first and second support springs.

[0047] Preferably, one end of the first supporting spring is sequentially penetrated into the first insulation slot in the insulation protection layer and the first air-avoiding slot in the graphene heating film, and is connected to the carrier plate, and the other end of the first supporting spring is fixed on the first terminal limiting guide rail.

[0048] Preferably, one end of the second supporting spring is sequentially penetrated into the second insulation slot in the insulation protection layer and the second air-avoiding slot in the graphene heating film, and is connected to the carrier plate, and the other end of the second supporting spring is fixed on the second terminal limiting guide rail.

[0049] The utility model discloses a supporting spring is arranged between the carrier plate and the terminal limiting guide rail, and is used for enhancing the vibration buffering performance of the whole device.

[0050] Preferably, the material of the first supporting spring and the second supporting spring, and the first conductive spring and the second conductive spring is an elastic stability material, and is independently selected from any one or combination of at least two of iron-based alloy, cobalt-based alloy, titanium-based alloy, niobium-based alloy, molybdenum-based alloy, tungsten-based alloy, chromium-based alloy or nickel-based superalloy.

[0051] Preferably, the nickel-based superalloy includes any one or combination of at least two of Rene alloy, Inconel alloy or Hastelloy alloy.

[0052] Preferably, the compression ratio of the first conductive spring and the first supporting spring and the compression ratio of the second conductive spring and the second supporting spring are (1.2-5.0): 1, for example, 1.2: 1, 1.5: 1, 2.0: 1, 2.5: 1, 3.0: 1, 3.5: 1, 4.0: 1, 4.5: 1 or 5.0: 1, etc.

[0053] In the utility model, the compression ratio of the first conductive spring and the first supporting spring is (1.2-5): 1, and the compression ratio of the second conductive spring and the second supporting spring is (1.2-5): 1, and both are same.

[0054] As the preferred technical scheme of the utility model, the graphene heating device further includes a temperature monitoring assembly, and the temperature monitoring assembly includes a thermocouple sensor, a thermocouple compression spring and a thermocouple fixing seat arranged from top to bottom.

[0055] The temperature monitoring assembly provided by the utility model can monitor the working temperature of the graphene heating film in real time, so as to keep the temperature of the graphene heating assembly in a suitable range and avoid overheating or uneven temperature.

[0056] Preferably, the thermocouple fixing seat is fixed on the reinforcing rib, and the thermocouple sensor is arranged in close contact with the insulating protective layer.

[0057] Compared with the prior art, the utility model has at least the following beneficial effects:

[0058] In the graphene heating device, atoms or molecules in the carrier plate medium can interact with photons of the graphene heating film, not only realizing the transmission of heat of the graphene heating film, but also effectively transmitting infrared radiation of specific wavelengths generated by the graphene heating film, the curing material is placed on the surface of the carrier plate, and uniform and stable curing effect of the curing material can be realized; the setting of the insulating protective layer can effectively shield the pollution, oxidation or moisture erosion of the graphene heating film by the external environment, thereby improving the long-term working stability of the graphene heating device; and the electrically connected conductive electrode on the graphene heating film and the electrode conduction assembly can stably continue to conduct the current transmitted to the terminal from the external power supply, improve the stability of the conductive contact and the conduction effect of the current, and avoid the influence of poor current conduction on the heating efficiency. The graphene heating device with the specific structure designed in the utility model can improve the curing reliability of the graphene heating film and the overall structural stability of long-term high-temperature work, and optimize the curing effect of the heating device. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 is a front view cross-sectional structure schematic view of the graphene heating device provided by the utility model.

[0060] Figure 2 is a top view of the graphene heating device provided by the utility model.

[0061] Figure 3 is a bottom view schematic view of the conductive electrode distribution on the graphene heating film provided by the utility model.

[0062] Among them, 1-1, first support frame;1-2, second support frame;2, reinforcing rib;3, carrier plate;4, graphene heating film;5, conductive electrode;5-1, first conductive electrode;5-2, second conductive electrode;6, insulating protective layer;7-1, first air avoidance groove;7-2, second air avoidance groove;8-1, first conductive elastic sheet;8-2, second conductive elastic sheet;9-1, first terminal;9-2, second terminal;10-1, first terminal limiting guide rail;10-2, second terminal limiting guide rail;11-1, first fixed nut;11-2, second fixed nut;12-1, first support elastic sheet;12-2, second support elastic sheet;13, thermocouple sensor;14, thermocouple spring;15, thermocouple fixing seat. DETAILED DESCRIPTION

[0063] The technical solutions of the utility model will be further described below in combination with the drawings and through specific embodiments. However, the following examples are only simple examples of the utility model, and do not represent or limit the protection scope of the utility model. The protection scope of the utility model is subject to the claims.

[0064] In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0065] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For the electrical and communication field, it can be wired connection, or wireless connection. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0066] In some embodiments, the graphene heating film is chemically doped with a dopant, and the dopant includes any one or a combination of at least two of inorganic metal, inorganic non-metal, organic small molecule, conductive polymer or low-dimensional material; the doping amount of the dopant is 0.2-10wt%, for example, 0.2wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, 6wt%, 7wt%, 8wt%, 9wt% or 10wt%, etc., based on the total mass of the graphene heating film being 100wt%. The utility model introduces a dopant into the graphene heating film, which can realize fine regulation and control of specific wavelengths; the specific wavelength is an infrared wavelength, and the infrared wavelength matches the optimal vibration characteristic peak of the functional group of the slurry to be cured.

[0067] In some embodiments, the insulating protective layer comprises an inorganic matrix material and a coefficient of expansion regulator; the inorganic matrix material comprises any one or a combination of at least two of a ceramic material or a composite oxide, the ceramic material comprises any one or a combination of at least two of alumina, silicon nitride or zirconia, the composite oxide comprises perovskite oxide and / or quartz; the coefficient of expansion regulator comprises beta-silicate and / or ZrW2O8. The utility model discloses through the composition of the insulating protective layer is regulated, makes the thermal expansion coefficient of the insulating protective layer and the thermal expansion coefficient of the carrier plate keep consistent, thereby can effectively protect the graphene heating film from the erosion of external environment. Wherein, the utility model does not make specific limitation to the thickness of the insulating protective layer, and the person skilled in the art can adjust according to actual application situation, generally control between 0.5-2.0mm, for example, 0.5mm, 1.0mm, 1.5mm or 2.0mm etc.

[0068] In some embodiments, the conductive electrode is arranged on the surface of the graphene heating film by an electric connection mode, the electric connection mode comprises any one of welding or crimping, which can ensure the stable conduction of current; the material of the conductive electrode is high-conductivity metal, for example, any one or a combination of at least two of copper, aluminum, silver, gold or silver-plated copper, preferably silver or copper, which can effectively avoid the influence of poor current conduction on heating efficiency.

[0069] In some embodiments, the first and second conductive springs and the first and second supporting springs all adopt a material with high-temperature elastic stability, that is, the spring constant fluctuation value (k 高 -k 室 ) / k 室 <28% at room temperature (25 DEG C) and the highest working temperature (900 DEG C), which has high-temperature oxidation resistance and good elasticity. 高 : spring constant at high temperature; k 室 : spring constant at room temperature.

[0070] In some embodiments, the first and second conductive springs and the first and second supporting springs can be selected from iron-chromium-nickel-molybdenum alloy, which has an elastic modulus of 203-210 Gpa, such as 203 Gpa, 204 Gpa, 205 Gpa, 206 Gpa, 207 Gpa, 208 Gpa, 209 Gpa or 210 Gpa, and a spring coefficient of 0.5-4.0 N / mm, such as 0.5 N / mm, 1.0 N / mm, 2.0 N / mm, 3.0 N / mm or 4.0 N / mm; the compression ratio of the first conductive spring and the first supporting spring to the second conductive spring and the second supporting spring is (1.2-5.0):1, respectively, to balance the conductive stability and the supporting and buffering capacity, and to ensure that the heating device will not cause poor contact due to thermal expansion during long-term use.

[0071] In some embodiments, the first terminal and the first conductive electrode, or the second terminal and the second conductive electrode, can be electrically connected by embedding a wire in the first or second conductive electrode in the form of clamping, bonding or threaded connection, and directly leading out the wire outside in the form of a high-temperature sleeve and connecting it to the first or second terminal, respectively. In this state, the first and second conductive springs can be used as supporting springs to provide balance and buffering, which will not be described in detail here.

[0072] In some embodiments, the first and second terminal limiting guide rails can move up and down on the first and second supporting frames, respectively, by adjusting the positions of the connected first and second top wires on the first and second supporting frames, and by adjusting the first and second fixed components arranged below the guide rails to achieve movement. The first and second terminals also move with the movement of the terminal limiting guide rails connected thereto. By adjusting the positions of the first and second terminal limiting guide rails, the supporting springs on the terminal limiting guide rails can ensure the support of the graphene heating assembly and balance the overall structure of the heating device, thereby enhancing the overall vibration buffering performance of the device and preventing the overall structure of the graphene heating device from being unstable under long-term high-temperature working conditions, which affects the solidification effect of the device.

[0073] The materials involved in the following embodiments are all known products or commercially available products to those skilled in the art.

[0074] Embodiment 1

[0075] This embodiment provides a graphene heating device, which includes a supporting assembly, a graphene heating assembly, an electrode conduction assembly and a temperature monitoring assembly, and the main view structural schematic diagram thereof is as shown in Figure 1 The partial perspective view schematic diagram of the top view structure thereof is as shown inFigure 2 It is noted that, Figure 2 The irregular openings in the figure are only given partial perspective views of the positions of the reinforcing ribs 2 set for display, and do not represent openings on the carrier plate 3, which is a dense structure.

[0076] The support assembly comprises a first support frame 1-1, a second support frame 1-2, and a reinforcing rib 2, the first support frame 1-1 and the second support frame 1-2 are respectively arranged on opposite sides of the graphene heating assembly along the length direction, both the first support frame 1-1 and the second support frame 1-2 are C-shaped supports, both the first support frame 1-1 and the second support frame 1-2 comprise an upper horizontal arm, a lower horizontal arm, and a vertical wall between the upper horizontal arm and the lower horizontal arm, the reinforcing rib 2 is arranged between the lower horizontal arm of the first support frame 1-1 and the lower horizontal arm of the second support frame 1-2, and the reinforcing rib 2 comprises three parallel connecting plates.

[0077] The graphene heating assembly is arranged in the first support frame 1-1 and the second support frame 1-2 at opposite ends along the length direction, and specifically comprises a carrier plate 3, a graphene heating film 4, a conductive electrode 5, and an insulating protective layer 6, the carrier plate 3, the graphene heating film 4, and the conductive electrode 5 are arranged in sequence from top to bottom, and the insulating protective layer 6 covers the exposed outer surfaces of the graphene heating film 4 and the conductive electrode 5, that is, is arranged on the lower surfaces of the graphene heating film 4 and the conductive electrode 5 away from the carrier plate 3 and all the side surfaces of the graphene heating film 4 and the conductive electrode 5, and the carrier plate 3 and the insulating protective layer 6 encapsulate the graphene heating film 4 and the conductive electrode 5.

[0078] Part of the upper surface of the carrier plate 3 away from the graphene heating film 4 is arranged in close contact with the lower surface of the upper horizontal arm of the first support frame 1-1 and the second support frame 1-1, the lower surface of the carrier plate 3 is in close contact with the graphene heating film 4, the carrier plate 3 is made of borosilicate glass, and the infrared light transmittance of the graphene heating film 4 is 80%.

[0079] The surface of the graphene heating film 4 is doped and modified by cobalt powder with a doping amount of 5wt%, the doped and modified graphene heating film 4 can match a characteristic vibration peak of 3400nm, and the surface of the graphene heating film 4 is provided with a first air-avoiding groove 7-1 and a second air-avoiding groove 7-2 with opening directions opposite to each other, the first air-avoiding groove 7-1 and the second air-avoiding groove 7-2 are respectively arranged close to the first support frame 1-1 and the second support frame 1-2, and both the first air-avoiding groove 7-1 and the second air-avoiding groove 7-2 penetrate the graphene heating film 4 along the thickness direction of the graphene heating film 4.

[0080] The upper surface of the conductive electrode 5 is electrically connected to the graphene heating film 4 by welding. The conductive electrode 5 includes a first conductive electrode 5-1 and a second conductive electrode 5-2. Both the first conductive electrode 5-1 and the second conductive electrode 5-2 are L-shaped structures and are diagonally arranged on the lower surface of the graphene heating film 4. The L-shaped structure of the first conductive electrode 5-1 starts from the side edge of the graphene heating film 4 close to the first support frame 1-1 and ends at the second air gap 7-2. The L-shaped structure of the second conductive electrode 5-2 starts from the side edge of the graphene heating film 4 close to the second support frame 1-2 and ends at the first air gap 7-1. The top view of the distribution of the conductive electrode 5 on the graphene heating film 4 is shown in Figure 3

[0081] The insulating protective layer 6 covers the surfaces and all sides of the graphene heating film 4 and the conductive electrode 5 away from the carrier plate 3. It is composed of aluminum oxide and ZrW2O8 with a mass ratio of 0.85:0.15. The insulating protective layer 6 located below the graphene heating film 4 and the conductive electrode 5 is provided with a first insulating slot and a second insulating slot at the opposite ends. The first insulating slot and the second insulating slot are respectively close to the first support frame 1-1 and the second support frame 1-2. Both the first insulating slot and the second insulating slot penetrate the insulating protective layer 6 along the thickness direction of the insulating protective layer 6. The first insulating slot and the first air gap 7-1 are correspondingly arranged in the direction of the graphene heating assembly layer. The second insulating slot and the second air gap 7-2 are correspondingly arranged in the direction of the graphene heating assembly layer.

[0082] The electrode conduction assembly includes a first electrode conduction assembly and a second electrode conduction assembly. The first electrode conduction assembly is arranged close to the first support frame 1-1, and the second electrode conduction assembly is arranged close to the second support frame 1-2.

[0083] The first electrode conduction assembly includes a first conductive spring 8-1, a first wiring terminal 9-1, and a first terminal limiting guide rail 10-1. The first terminal limiting guide rail 10-1 and the first wiring terminal 9-1 are respectively arranged on the inner side and the outer side of the first support frame 1-1. A first top wire is arranged on the vertical wall of the first support frame 1-1. The two ends of the first top wire are respectively connected to the first wiring terminal 9-1 and the first terminal limiting guide rail 10-1. The first terminal limiting guide rail 10-1 is fastened above the lower horizontal arm of the first support frame 1-1 by a first fixed nut 11-1 arranged on the lower horizontal arm of the first support frame 1-1. One end of the first conductive spring 8-1 is fixed to the first terminal limiting guide rail 10-1 and connected to the first wiring terminal 9-1 through the first terminal limiting guide rail 10-1. The other end of the first conductive spring 8-1 is electrically connected to the lower surface of the first conductive electrode 5-1.

[0084] ​The second electrode conduction assembly comprises a second conductive spring 8-2, a second terminal 9-2 and a second terminal limiting guide rail 10-2, the second terminal limiting guide rail 10-2 and the second terminal 9-2 are arranged on the inner side and the outer side of the second support frame 1-2 respectively, a second top wire is arranged on the vertical wall of the second support frame 1-2, the two ends of the second top wire are connected with the second terminal 9-2 and the second terminal limiting guide rail 10-2 respectively, the second terminal limiting guide rail 10-2 is fastened above the lower horizontal arm of the second support frame 1-2 through the second fixing nut 11-2 arranged on the lower horizontal arm of the second support frame 1-2, one end of the second conductive spring 8-2 is fixed on the second terminal limiting guide rail 10-2 and connected with the second terminal 9-2 through the second terminal limiting guide rail 10-2, and the other end of the second conductive spring 8-2 is electrically connected with the lower surface of the second conductive electrode 5-2.

[0085] The support assembly further comprises a first support spring 12-1 and a second support spring 12-2, one end of the first support spring 12-1 penetrates the first insulation slot in the insulation protection layer 6 and the first air-avoiding slot 7-1 in the graphene heating film 4 in sequence, and is connected with the carrier plate 3, and the other end of the first support spring 12-1 is fixed on the first terminal limiting guide rail 10-1; one end of the second support spring 12-2 penetrates the second insulation slot in the insulation protection layer 6 and the second air-avoiding slot 7-2 in the graphene heating film 4 in sequence, and is connected with the carrier plate 3, and the other end of the second support spring 12-2 is fixed on the second terminal limiting guide rail 10-2. The first support spring 12-1 and the second support spring 12-2, and the first conductive spring 8-1 and the second conductive spring 8-2 are all made of an elastically stable material, specifically, iron-chromium-nickel-molybdenum alloy, the elastic modulus is 205 Gpa, the spring coefficient of the spring is 2.0 N / mm, the compression ratio between the first conductive spring 8-1 and the first support spring 12-1 is 2.0:1, and the compression ratio between the second conductive spring 8-2 and the second support spring 12-2 is 2.0:1.

[0086] The temperature monitoring assembly comprises a thermocouple sensor 13, a thermocouple compression spring 14 and a thermocouple fixing seat 15 arranged in sequence from top to bottom, the thermocouple fixing seat 15 is fixed on the reinforcing rib 2, the thermocouple sensor 13 is arranged in close combination with the insulation protection layer 6, and the thermocouple sensor 13 is a ceramic thermocouple.

[0087] The graphene heating device provided by the embodiment places the material to be solidified on the exposed surface of the carrier plate in the graphene heating device, and the graphene heating device is powered by the current of the external power source introduced through the lead wire via the first and second wiring terminals, the current is transmitted to the graphene heating assembly, and the graphene heating film is used to heat and solidify the material to be solidified placed on the carrier plate above the graphene heating film, the graphene heating device has high heat conversion efficiency, long service life, excellent electric conductivity stability and overall structural stability, and is suitable for heating requirements in high-temperature environments, the working temperature of the device can be as high as 900 DEG C, and the device is suitable for industrial heating equipment, heaters and related fields; meanwhile, the overall structure of the device is compact, easy to install and maintain, and can meet the long-term continuous working requirements.

[0088] The applicant declares that the above description is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and those skilled in the art should understand that any changes or replacements within the technical scope disclosed by the present application can be easily thought of by any person skilled in the art, and all fall within the protection scope and disclosure scope of the present application.

Claims

1. A graphene heating device, characterized in that, The graphene heating device includes a support assembly, a graphene heating assembly, and an electrode conduction assembly. The support component includes a first support frame and a second support frame, which are respectively disposed on opposite sides of the graphene heating component; The graphene heating component includes a carrier plate, a graphene heating film, a conductive electrode, and an insulating protective layer. The carrier plate, the graphene heating film, and the conductive electrode are arranged sequentially from top to bottom. The insulating protective layer covers the exposed outer surfaces of the graphene heating film and the conductive electrode. The upper surface of the conductive electrode is electrically connected to a portion of the lower surface of the graphene heating film. The electrode conduction assembly includes a conductive spring, a terminal block, and a terminal limiting guide rail. The terminal limiting guide rail is disposed inside the first support frame or the second support frame, and the terminal block is disposed outside the first support frame or the second support frame. One end of the conductive spring is fixed on the terminal limiting guide rail and connected to the terminal block through the terminal limiting guide rail. The other end of the conductive spring is electrically connected to the lower surface of the conductive electrode.

2. The graphene heating device according to claim 1, characterized in that, Both the first support frame and the second support frame are C-type brackets; The first support frame and the second support frame each independently include an upper horizontal arm, a lower horizontal arm, and a vertical wall located between the upper horizontal arm and the lower horizontal arm.

3. The graphene heating device according to claim 2, characterized in that, The lower surfaces of the upper horizontal arms of the first support frame and the second support frame are attached to a portion of the upper surface of the carrier plate on the side away from the graphene heating film. A reinforcing rib is provided between the lower horizontal arm of the first support frame and the lower horizontal arm of the second support frame, and the reinforcing rib includes a plurality of connecting rods and / or connecting plates.

4. The graphene heating device according to claim 2, characterized in that, The graphene heating film has a first clearance groove and a second clearance groove with opening directions opposite to each other along its length direction. The first clearance groove and the second clearance groove are respectively located close to the first support frame and the second support frame. The first clearance groove and the second clearance groove independently penetrate the graphene heating film along its thickness direction.

5. The graphene heating device according to claim 4, characterized in that, The conductive electrode includes a first conductive electrode and a second conductive electrode; Both the first conductive electrode and the second conductive electrode are L-shaped structures and are arranged diagonally on the surface of the graphene heating film.

6. The graphene heating device according to claim 5, characterized in that, The electrode conduction assembly includes a first electrode conduction assembly and a second electrode conduction assembly, wherein the first electrode conduction assembly is disposed close to the first support frame and the second electrode conduction assembly is disposed close to the second support frame; The first electrode conducting assembly includes a first conductive spring, a first terminal block, and a first terminal limiting guide rail; The first terminal limiting guide rail is disposed on the inner side of the first support frame, the first wiring terminal is disposed on the outer side of the first support frame, one end of the first conductive spring is fixed on the first terminal limiting guide rail and connected to the first wiring terminal through the first terminal limiting guide rail, and the other end of the first conductive spring is electrically connected to the lower surface of the first conductive electrode. The second electrode conducting assembly includes a second conductive spring, a second wiring terminal, and a second terminal limiting guide rail; The second terminal limiting guide rail is disposed on the inner side of the second support frame, the second wiring terminal is disposed on the outer side of the second support frame, one end of the second conductive spring is fixed on the second terminal limiting guide rail and connected to the second wiring terminal through the second terminal limiting guide rail, and the other end of the second conductive spring is electrically connected to the lower surface of the second conductive electrode.

7. The graphene heating device according to claim 6, characterized in that, A first set screw is provided on the vertical wall of the first support frame, and the two ends of the first set screw are respectively connected to the first terminal and the first terminal limiting guide rail; A second set screw is provided on the vertical wall of the second support frame, and the two ends of the second set screw are respectively connected to the second terminal and the second terminal limiting guide rail; The lower horizontal arm of the first support frame is also provided with a first fixing component for fixing the first terminal limiting guide rail; A second fixing component is also provided on the lower horizontal arm of the second support frame for fixing the second terminal limiting guide rail.

8. The graphene heating device according to claim 6, characterized in that, The insulating protective layer located below the graphene heating film and the conductive electrode has a first insulating groove and a second insulating groove at opposite ends, and the first insulating groove and the second insulating groove are respectively located close to the first support frame and the second support frame. The first insulating groove and the second insulating groove independently penetrate the insulating protective layer along the thickness direction of the insulating protective layer; The first insulating groove and the first void groove are respectively arranged in the direction of the graphene heating component stacking; The second insulating groove and the second void groove are respectively arranged in the direction of the graphene heating component stacking.

9. The graphene heating device according to claim 8, characterized in that, The support assembly further includes a first support spring and a second support spring; One end of the first support spring passes through the first insulating groove in the insulating protective layer and the first void groove in the graphene heating film in sequence, and is connected to the carrier plate. The other end of the first support spring is fixed on the first terminal limiting guide rail. One end of the second support spring passes through the second insulating groove in the insulating protective layer and the second void groove in the graphene heating film in sequence, and is connected to the carrier plate; the other end of the second support spring is fixed on the second terminal limiting guide rail. The compression ratio of the first conductive spring and the first supporting spring is the same as that of the second conductive spring and the second supporting spring (1.2-5.0):

1.

10. The graphene heating device according to claim 3, characterized in that, The graphene heating device also includes a temperature monitoring component, which includes a thermocouple sensor, a thermocouple compression spring, and a thermocouple mounting base arranged sequentially from top to bottom. The thermocouple mounting base is fixed to the reinforcing rib, and the thermocouple sensor is tightly fitted to the insulating protective layer.

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