Graphene aluminum plate heating plate
By combining graphene heating elements, aluminum plates, and insulation layers, the problem of low thermal energy utilization in existing heating elements is solved, achieving rapid and uniform heating and heat concentration, thereby improving thermal efficiency and reducing safety risks.
Patent Information
- Application Number
- CN202520121748.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing heating elements have low thermal efficiency, the conductive electrode coating is prone to detachment from the conductive terminals, and there is a lack of heat collection and energy concentration devices, resulting in serious heat loss.
The structure adopts a graphene heating element, a first aluminum plate, a second aluminum plate, and an insulation layer. The heat from the graphene heating element is reflected back to the surrounding area through reflective aluminum foil. Combined with an insulating film and stainless steel protection, this improves the utilization rate of thermal energy and prevents safety hazards.
It achieves rapid and uniform heating, with heat concentrated in the heating area, reducing heat loss, improving thermal efficiency, and reducing safety hazards such as the risk of short circuits and overheating damage.
Smart Images
Figure CN223786212U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating plates, and in particular to a graphene aluminum plate heating plate. Background Technology
[0002] Heating elements are common components in many devices. Generally, heating elements generate heat when connected to electricity to achieve the purpose of heating. With the increasing popularity of heating elements, people's requirements for their heating performance are constantly improving. Heating elements are installed in heating devices such as electric heaters or electric heating tables, and can be widely used in various civil and public buildings such as residences, offices, hotels, shopping malls, hospitals, schools, train carriages, and simple mobile homes. Electric heating panels can be installed in cooking stoves, electric ovens, electric kettles, and other cooking and heating appliances, and are widely used in various cooking and heating equipment.
[0003] Common heating elements are mainly electrothermal films, which are sheet-like in shape. When connected to electricity, the heating elements inside generate heat, which gradually diffuses into the designated space. For example, graphene heating coatings are applied to materials such as fiber cloth and heat-conducting plates. These are mainly used in applications where the heating temperature is not high. The conductive electrode coating and the conductive terminal are generally connected by soldering. When high temperatures are generated, the conductive electrode coating and the conductive terminal are prone to detachment. Furthermore, because there is no reflective device on the heating part, the graphene cannot radiate heat itself, thus it does not have the function of collecting and concentrating heat, and the thermal energy utilization rate needs to be improved.
[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content
[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a graphene aluminum plate heating plate. Through the structural design and coordination of the graphene heating element, the first aluminum plate, the second aluminum plate, and the insulation layer, the heating plate ensures rapid and uniform heating. By placing the insulation layer on the inner surface of the second aluminum plate, more of the heat generated by the graphene heating element is reflected back to the area around the graphene heating element, reducing heat loss to the external environment, thereby improving the thermal efficiency of the graphene heating element and concentrating heat in the heating area for faster heating.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A graphene-aluminum heating plate includes a graphene heating element, a first aluminum plate, a second aluminum plate, and a heat insulation layer; the graphene heating element has a front and a back side disposed on opposite sides, the first aluminum plate is disposed on the front side of the graphene heating element; the heat insulation layer is disposed on the back side of the graphene heating element; and the second aluminum plate is disposed on the outer surface of the heat insulation layer.
[0008] As a preferred embodiment, the insulation layer is a reflective aluminum foil.
[0009] As a preferred embodiment, the front and back sides of the graphene heating element are respectively covered with a first insulating film and a second insulating film, and the heat insulation layer is covered on the outer surface of the second insulating film.
[0010] As a preferred embodiment, the first insulating film and the second insulating film are made of PI material.
[0011] As a preferred embodiment, the graphene heating element, the first aluminum plate, the second aluminum plate, and the insulation layer are further covered with stainless steel.
[0012] As a preferred embodiment, the graphene heating element, the first aluminum plate, the second aluminum plate, the insulation layer, and the stainless steel are fixed together with rivets.
[0013] As a preferred embodiment, the rivet is made of an insulating material.
[0014] As a preferred embodiment, the graphene heating element comprises a mixture of conductive powder and graphene slurry, which is integrally formed by heating and pressing.
[0015] Compared with the prior art, this utility model has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly relies on the structural design and coordination of a graphene heating element, a first aluminum plate, a second aluminum plate, and a heat insulation layer. The first aluminum plate covers the front of the graphene heating element; the heat insulation layer is disposed on the back of the graphene heating element; and the second aluminum plate covers the outer surface of the heat insulation layer. In this way, the rapid and uniform heating characteristics of the graphene heating element are utilized to ensure that the entire heating plate heats up quickly and evenly. Furthermore, the first aluminum plate covers and protects the front of the graphene heating element, while also strengthening the overall structural strength of the graphene heating element.
[0016] Secondly, by placing the insulation layer on the inner surface of the second aluminum plate, more of the heat generated by the graphene heating element can be reflected back to the area around the graphene heating element, reducing heat loss to the external environment and thus improving the thermal efficiency of the graphene heating element. This concentrates heat in the heating area, resulting in faster heating. Furthermore, the insulation layer on the inner surface can provide some protection for the second aluminum plate, reducing the direct impact of the high temperature generated by the graphene heating element on the second aluminum plate and lowering the risk of deformation and aging due to prolonged heating. At the same time, it can also isolate the graphene heating element from direct contact with the second aluminum plate, avoiding potential safety hazards such as short circuits and overheating damage caused by localized overheating.
[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0018] Figure 1 This is a structural diagram of an embodiment of the present utility model;
[0019] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;
[0020] Figure 3 This is another cross-sectional view of an embodiment of the present utility model;
[0021] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.
[0022] Explanation of reference numerals in the attached diagram:
[0023] 10. Graphene heating element; 20. First aluminum plate
[0024] 11. Stainless steel 12. Rivets
[0025] 30. Second aluminum plate; 40. Insulation layer
[0026] 50. First insulating film; 60. Second insulating film. Detailed Implementation
[0027] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of an embodiment of the present invention.
[0028] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are 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. They should not be construed as limiting the specific protection scope of this utility model.
[0029] A graphene aluminum heating plate includes a graphene heating element 10, a first aluminum plate 20, a second aluminum plate 30, and a heat insulation layer 40.
[0030] The graphene heating element 10 has a front and a back side arranged opposite each other. Preferably, the graphene heating element 10, the first aluminum plate 20, the second aluminum plate 30, and the insulation layer 40 are further covered with stainless steel 11. Preferably, the graphene heating element 10, the first aluminum plate 20, the second aluminum plate 30, the insulation layer 40, and the stainless steel 11 are fixed together by rivets 12. Preferably, the rivets 12 are made of insulating material.
[0031] Preferably, the graphene heating element 10 is made by mixing conductive powder and graphene slurry and molding them into one piece by heating and pressing.
[0032] Alternatively, in this embodiment, the graphene heating element 10 is made by mixing Teflon, graphene slurry, and conductive powder and then heating and pressing them together to form a single piece. This effectively improves the high-temperature resistance of the heating film itself, enabling it to provide higher temperatures to the outside, enhancing its functionality, and meeting more application scenarios. The Teflon is selected with Teflon powder of appropriate particle size, preferably with finer particle size, which is beneficial for uniform mixing. Common particle sizes are between 10-50 micrometers. The type of graphene is selected according to the required performance, such as graphene oxide or reduced graphene oxide, and its good dispersibility is ensured. Graphene products that have undergone surface modification or functionalization can be selected to improve their compatibility in the mixed system.
[0033] The appropriate conductive powder is selected according to the specific conductivity requirements, such as metal powder (e.g., silver powder, copper powder, etc.), carbon nanotubes, conductive carbon black, etc.
[0034] Before mixing, the materials are dried and pre-dispersed. During drying, Teflon, graphene, and conductive powder are dried separately under appropriate temperature and conditions to remove moisture and other volatile impurities, so as to avoid affecting the mixing effect or causing a decrease in material performance during the mixing process. During pre-dispersion, graphene and conductive powder are added to an appropriate amount of solvent and dispersed evenly in the solvent by ultrasonic dispersion, mechanical stirring, or other methods to form a stable dispersion or slurry.
[0035] Alternatively, a melt blending method can be used; Teflon is heated to a molten state, and then graphene and conductive powder are added. The mixture is then stirred using a high-speed stirrer or extruder to ensure that the graphene and conductive powder are uniformly dispersed in the Teflon matrix. The appropriate mixing method can be selected according to actual needs, and will not be elaborated here. Alternatively, a Teflon layer can be provided on the front and / or back of the graphene heating element 10; this Teflon layer is deposited between the graphene heating element and the insulating film, thereby effectively improving the high-temperature resistance of the heating substrate itself, enabling it to provide higher temperatures to the outside, enhancing functionality, and meeting more application scenarios.
[0036] The first aluminum plate 20 covers the front of the graphene heating element 10; the heat insulation layer 40 is disposed on the back of the graphene heating element 10; preferably, the heat insulation layer 40 is a reflective aluminum foil. The second aluminum plate 30 covers the outer surface of the heat insulation layer 40. By placing the reflective aluminum foil on the inner surface of the second aluminum plate 30, more of the heat generated by the graphene heating element 10 can be reflected back to the area around the graphene heating element 10, reducing heat loss to the external environment, thereby improving the thermal efficiency of the graphene heating element 10, concentrating heat in the heating area, and making the temperature rise faster; and the reflective aluminum foil on the inner surface can also play a certain protective role for the second aluminum plate 30, reducing the direct impact of the high temperature generated by the graphene heating element 10 on the second aluminum plate 30, reducing the risk of deformation, aging, and other problems caused by prolonged heating of the second aluminum plate 30; at the same time, it can also isolate the graphene heating element 10 from direct contact with the second aluminum plate 30, avoiding potential safety hazards such as short circuits and overheating damage caused by local overheating. In this embodiment, the graphene heating element 10 only heats one side.
[0037] Preferably, the front and back sides of the graphene heating element 10 are respectively covered with a first insulating film 50 and a second insulating film 60, and the heat insulation layer 40 is applied to the outer surface of the second insulating film 60. Preferably, the first insulating film 50 and the second insulating film 60 are made of PI material.
[0038] The key design feature of this invention lies in the structural design and coordination of a graphene heating element, a first aluminum plate, a second aluminum plate, and an insulation layer. The first aluminum plate covers the front of the graphene heating element; the insulation layer is located on the back of the graphene heating element; and the second aluminum plate covers the outer surface of the insulation layer. In this way, the rapid and uniform heating characteristic of the graphene heating element is utilized to ensure that the entire heating plate heats up quickly and evenly. Furthermore, the first aluminum plate covers and protects the front of the graphene heating element, while also strengthening the overall structural strength of the graphene heating element.
[0039] Secondly, by placing the insulation layer on the inner surface of the second aluminum plate, more of the heat generated by the graphene heating element can be reflected back to the area around the graphene heating element, reducing heat loss to the external environment and thus improving the thermal efficiency of the graphene heating element. This concentrates heat in the heating area, resulting in faster heating. Furthermore, the insulation layer on the inner surface can provide some protection for the second aluminum plate, reducing the direct impact of the high temperature generated by the graphene heating element on the second aluminum plate and lowering the risk of deformation and aging due to prolonged heating. At the same time, it can also isolate the graphene heating element from direct contact with the second aluminum plate, avoiding potential safety hazards such as short circuits and overheating damage caused by localized overheating.
[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A graphene-aluminum heating plate, characterized in that: It includes a graphene heating element, a first aluminum plate, a second aluminum plate, and an insulation layer; the graphene heating element has a front and a back side arranged opposite to each other, the first aluminum plate is disposed on the front side of the graphene heating element; the insulation layer is disposed on the back side of the graphene heating element; and the second aluminum plate is disposed on the outer surface of the insulation layer.
2. The graphene aluminum plate heating plate according to claim 1, characterized in that: The insulation layer is a reflective aluminum foil.
3. The graphene aluminum plate heating plate according to claim 1, characterized in that: The front and back sides of the graphene heating element are respectively covered with a first insulating film and a second insulating film, and the heat insulation layer is covered on the outer surface of the second insulating film.
4. The graphene aluminum plate heating plate according to claim 3, characterized in that: The first and second insulating films are made of PI material.
5. The graphene aluminum plate heating plate according to claim 1, characterized in that: The graphene heating element, the first aluminum plate, the second aluminum plate, and the insulation layer are also covered with stainless steel.
6. The graphene aluminum plate heating plate according to claim 5, characterized in that: The graphene heating element, the first aluminum plate, the second aluminum plate, the insulation layer, and the stainless steel are fixed together with rivets.
7. The graphene aluminum plate heating plate according to claim 6, characterized in that: The rivets are made of insulating material.
8. The graphene aluminum plate heating plate according to claim 1, characterized in that: The graphene heating element is made by mixing conductive powder and graphene slurry and then molding them into a single piece through heating and pressing.