Novel composite graphene radiator

Abstract

The novel composite graphene radiator comprises a graphene radiator body, a plurality of graphene radiating fins are arranged on the surface of the graphene radiator body, and a metal spraying layer is attached to at least part of the surface of each graphene radiating fin. According to the graphene radiator, the metal spraying layer is attached to the radiating fins of the graphene radiator body, so that heat transmitted to the surfaces of the radiating fins is quickly flattened by the metal spraying layer, the surface area of the radiating fins is large, and the metal spraying layer on the surface of the radiating fins can also have the same large area, so that a good radiating effect is achieved. Besides, the metal spraying layer is of a layer body structure formed by spraying metal in a molten state on the heat dissipation fins and solidifying the metal, the metal spraying layer and the surfaces of the heat dissipation fins are firmly combined together, it is ensured that the metal spraying layer and the surfaces of the heat dissipation fins are in good contact, the heat transfer effect is improved, and the structural strength of the heat dissipation fins can be improved.

Description

Technical Field

[0001] The present invention relates to the field of graphene radiators, and in particular to a novel composite graphene radiator. Background Art

[0002] Non-metallic radiators have significant light weight characteristics and are widely used in many electronic industries, especially in the aerospace field (such as unmanned aerial vehicles). However, at the same time, due to the presence of some coupling agents with relatively low thermal conductivity in the production materials of non-metallic radiators, the thermal conductivity uniformity and flattening are weakened. At the same time, their structural strength is far inferior to that of metal materials, and the impact resistance is poor.

[0003] Chinese Patent Publication No. CN105385013A disclosed a non-metallic radiator on March 9, 2016. The heat dissipation material used is prepared from the following raw materials by weight: carbon nanotubes: 10-15 parts; polymethyl methacrylate: 3-5 parts; graphite: 10-12 parts; organic montmorillonite: 3-5 parts; hydroxy silicone oil: 3.5-4.5 parts; clay: 2.5-3.5 parts; octamethylcyclotetrasiloxane: 5-6 parts; ethylene-vinyl acetate copolymer: 4-5 parts; polyphenylene sulfide: 1-2 parts; glass fiber: 0.8-1.2 parts; coupling agent: 0.5-0.8 parts; plasticizer: 0.5-0.8 parts. It is claimed that the thermal conductivity of this radiator is 155 w / m·k. It can be seen that its thermal conductivity is lower than that of pure aluminum and pure copper, but in the case of the same volume, its overall weight is significantly lower than that of metal materials such as pure aluminum and pure copper. In addition, since the non-metallic radiator of this structure is injection-molded after mixing multiple materials, the heat-conducting materials are connected by a coupling agent, resulting in poor structural strength. At the same time, the heat-conducting materials are blocked by the coupling agent, affecting its heat-conducting performance. Therefore, the current non-metallic radiators still need to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a novel composite graphene radiator with reasonable structure, high strength, good surface thermal ductility, and improved heat dissipation efficiency.

[0005] The purpose of the present invention is achieved as follows: A novel composite graphene radiator includes a graphene radiator body with multiple graphene heat dissipation fins provided on its surface, and at least part of the surface of the graphene heat dissipation fins is attached with a gold spraying layer.

[0006] The purpose of the present invention can also be solved by the following technical measures: As a more specific solution, the graphene radiator body includes a graphene heat-conducting base and the graphene heat dissipation fins integrally formed together. The graphene heat-conducting base includes a heat-receiving mounting surface and a main heat dissipation surface, and the graphene heat dissipation fins are arranged on the main heat dissipation surface.

[0007] As a further solution, perforations are provided on the graphene heat-conducting base, one end of the perforation leads to the heat-receiving mounting surface, and the other end of the perforation leads to the main heat-radiating surface; the gold-sprayed layer also extends to the inner wall of the perforation.

[0008] As a further solution, the main heat-radiating surface and the heat-receiving mounting surface are respectively located on the upper and lower sides of the graphene heat-conducting base, and a concave surface is provided at the upper end of the graphene heat-radiating fin.

[0009] As a further solution, a part of the concave surface falls into the orthographic projection area at the center of the heat-receiving mounting surface.

[0010] As a further solution, multiple graphene heat-radiating fins are arranged in parallel, and a heat-dissipating channel penetrating through both sides of the graphene radiator body is formed by separating adjacent graphene heat-radiating fins.

[0011] As a further solution, a heat-conducting metal is embedded in the heat-dissipating channel. The heat-conducting metal includes a shielding surface and an exposed surface. The shielding surface is in contact with the surface of the graphene heat-radiating fin, and the gold-sprayed layer also extends from the surface of the graphene heat-radiating fin to the exposed surface of the heat-conducting metal.

[0012] As a further solution, a heat pipe is embedded in the heat-dissipating channel. The heat pipe extends along the channel direction, at least part of its surface is exposed, and at least part of its surface is in contact with the surface of the graphene heat-radiating fin. The gold-sprayed layer also extends from the surface of the graphene heat-radiating fin to the exposed surface of the heat pipe.

[0013] As a further solution, a heat pipe is further included. The heat pipe horizontally penetrates the graphene heat-radiating fin and spans the heat-dissipating channel, and the gold-sprayed layer extends from the surface of the graphene heat-radiating fin to the exposed surface of the heat pipe.

[0014] As a further solution, the gold-sprayed layer is an aluminum gold-sprayed layer or a copper gold-sprayed layer; the graphene radiator body is formed by injection molding or casting after mixing graphene, carbon nanotubes and an adhesive.

[0015] The beneficial effects of the present invention are as follows: (1) The gold-sprayed layer of the present invention is attached to the heat-radiating fins of the graphene radiator body, so that the heat transferred to the surface of the heat-radiating fins is quickly flattened by the gold-sprayed layer. Since the surface area of the heat-radiating fins is large, the gold-sprayed layer on its surface can also have the same large area, so a good heat-dissipating effect is achieved.

[0016] (2) The gold-sprayed layer of the present invention is a layer structure formed by spraying molten metal on the heat-radiating fins and solidifying it. The metal is firmly bonded to the surface of the heat-radiating fins, ensuring good contact between the gold-sprayed layer and the surface of the heat-radiating fins, improving the heat transfer effect, and can also improve the structural strength of the heat-radiating fins.

[0017] (3) The graphene radiator body of the present invention uses a gold spraying layer to cover the heat dissipation fins, and the thickness of the gold spraying layer is controllable, which can avoid having a greater impact on the overall weight of the product due to being too thick.

[0018] (4) The graphene heat conduction base of the present invention is provided with through holes penetrating the heat receiving mounting surface and the main heat dissipation surface. Since the heat receiving mounting surface is mainly in contact with the components that need to dissipate heat, after the through holes are formed, the heat of the components can more quickly pass from the gold spraying layer on the through hole wall surface to the gold spraying layer on the surface of the heat dissipation fins, realizing large-area and rapid temperature reduction.

[0019] (5) A concave surface can be provided in the middle of the upper end of the present invention, so that the heat transfer distance from the heat receiving mounting surface to the upper end of the heat dissipation fins is shortened, improving the heat transfer effect; moreover, due to the strengthening effect of the gold spraying layer on the product structure, the gold spraying layer also covers the concave surface, and the opening of the concave surface will not cause the product structure to be weakened and fractured.

[0020] (6) Heat conduction metal strips or heat pipes can also be embedded on the heat dissipation fins of the present invention. Coupled with the gold spraying layer extending to the surface of the heat conduction metal strips or heat pipes, the heat conduction metal strips or heat pipes can be fixed to the heat dissipation fins, improving the structural strength and heat conduction ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the first embodiment of the present invention.

[0022] Figure 2 It is Figure 1 the A-A cross-sectional structure diagram of

[0023] Figure 3 It is Figure 1 the B-B cross-sectional structure diagram of

[0024] Figure 4 It is a schematic three-dimensional structure diagram of the second embodiment of the present invention.

[0025] Figure 5 It is Figure 4 the C-C cross-sectional structure diagram of

[0026] Figure 6 It is Figure 4 the D-D cross-sectional structure diagram of

[0027] Figure 7 It is a schematic three-dimensional structure diagram of the third embodiment of the present invention.

[0028] Figure 8 It is Figure 7 the E-E cross-sectional structure diagram of

[0029] Figure 9 It is Figure 8Schematic diagram of the enlarged structure at position F in the [Chinese description].

[0030] Figure 10 This is a schematic diagram of a cross-sectional structure of the fourth embodiment of the present invention.

[0031] Figure 11 This is a schematic diagram of the end face structure of the fifth embodiment of the present invention.

[0032] Figure 12 This is a schematic diagram of the three-dimensional structure of the sixth embodiment of the present invention. Detailed implementation manners

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Embodiment 1. Refer to Figures 1 to 3 As shown, a novel composite graphene radiator includes a graphene radiator body 1 with multiple graphene heat dissipation fins 12 provided on its surface, and a gold spraying layer 2 is attached to at least part of the surface of the graphene heat dissipation fins 12.

[0034] The graphene radiator body 1 includes a graphene heat conduction base 11 and the graphene heat dissipation fins 12 integrally formed together. The graphene heat conduction base 11 includes a heat-receiving installation surface 111 and a main heat dissipation surface 112, and the graphene heat dissipation fins 12 are arranged on the main heat dissipation surface 112.

[0035] As a further solution, the main heat dissipation surface 112 and the heat-receiving installation surface 111 are respectively located on the upper and lower sides of the graphene heat conduction base 11, and a concave surface 13 is provided in the middle of the upper end of the graphene heat dissipation fins 12.

[0036] Multiple graphene heat dissipation fins 12 are arranged in parallel, and a heat dissipation channel 14 penetrating both sides of the graphene radiator body 1 is formed by separating adjacent graphene heat dissipation fins 12.

[0037] The gold spraying layer 2 is an aluminum spraying layer or a copper spraying layer; the graphene radiator body 1 is formed by injection molding or casting after mixing graphene, carbon nanotubes and an adhesive.

[0038] Embodiment 2. Refer to Figures 4 to 6 As shown, a novel composite graphene radiator includes a graphene radiator body 1 with multiple graphene heat dissipation fins 12 provided on its surface, and a gold spraying layer 2 is attached to at least part of the surface of the graphene heat dissipation fins 12.

[0039] The graphene radiator body 1 includes a graphene heat conduction base 11 and the graphene heat dissipation fins 12 integrally formed together. The graphene heat conduction base 11 includes a heat-receiving installation surface 111 and a main heat dissipation surface 112, and the graphene heat dissipation fins 12 are arranged on the main heat dissipation surface 112.

[0040] The graphene heat-conducting base 11 is provided with a perforation 15, one end of the perforation 15 leads to the heat-receiving mounting surface 111, and the other end of the perforation 15 leads to the main heat-radiating surface 112; the gold-sprayed layer 2 also extends to the inner wall of the perforation 15.

[0041] The main heat-radiating surface 112 and the heat-receiving mounting surface 111 are respectively located on the upper and lower sides of the graphene heat-conducting base 11, and the upper end of the graphene heat-radiating fin 12 is provided with a concave surface 13. In this embodiment, the concave surface 13 is concave-arc-shaped.

[0042] Multiple graphene heat-radiating fins 12 are arranged in parallel, and a heat-dissipating channel 14 penetrating through both sides of the graphene radiator body 1 is formed by separating adjacent graphene heat-radiating fins 12.

[0043] The gold-sprayed layer 2 is an aluminum gold-sprayed layer or a copper gold-sprayed layer; the graphene radiator body 1 is injection-molded or cast after mixing graphene, carbon nanotubes and an adhesive.

[0044] Embodiment 3, see Figures 7 to 9 As shown, a novel composite graphene radiator includes a graphene radiator body 1 with multiple graphene heat-radiating fins 12 on its surface, and at least part of the surface of the graphene heat-radiating fins 12 is attached with a gold-sprayed layer 2.

[0045] The graphene radiator body 1 includes a graphene heat-conducting base 11 and the graphene heat-radiating fins 12 which are integrally formed together. The graphene heat-conducting base 11 includes a heat-receiving mounting surface 111 and a main heat-radiating surface 112, and the graphene heat-radiating fins 12 are arranged on the main heat-radiating surface 112.

[0046] Multiple graphene heat-radiating fins 12 are arranged in parallel, and a heat-dissipating channel 14 penetrating through both sides of the graphene radiator body 1 is formed by separating adjacent graphene heat-radiating fins 12.

[0047] A heat-conducting metal 3 is embedded in the heat-dissipating channel 14. The heat-conducting metal 3 includes a shielding surface and an exposed surface. The shielding surface is in contact with the surface of the graphene heat-radiating fin 12, and the gold-sprayed layer 2 also extends from the surface of the graphene heat-radiating fin 12 to the exposed surface of the heat-conducting metal 3. The heat-conducting metal 3 extends along the convection direction of the heat-dissipating channel 14, so that the heat of the heat-conducting metal 3 is carried away by the convection air, improving the heat-dissipating effect.

[0048] As a further solution, the graphene heat-conducting base 11 is provided with a perforation 15, one end of the perforation 15 leads to the heat-receiving mounting surface 111, and the other end of the perforation 15 leads to the main heat-radiating surface 112; the gold-sprayed layer 2 also extends to the inner wall of the perforation 15.

[0049] As a further solution, the main heat dissipation surface 112 and the heat-receiving mounting surface 111 are respectively located on the upper and lower sides of the graphene heat-conducting base 11, and a concave surface 13 is provided at the upper end of the graphene heat dissipation fin 12.

[0050] The gold-sprayed layer 2 is an aluminum gold-sprayed layer or a copper gold-sprayed layer; the graphene radiator body 1 is formed by injection molding or casting after mixing graphene, carbon nanotubes and an adhesive.

[0051] The heat-conducting metal 3 is copper or aluminum (but not limited to the above metals).

[0052] Embodiment 4, the difference from Embodiment 3 is as follows: Refer to Figure 10 As shown, a heat pipe 4 is embedded in the heat dissipation channel 14 (equivalent to replacing the heat-conducting metal in Embodiment 3). The heat pipe 4 extends along the channel direction, and at least part of its surface is exposed and at least part of its surface is in contact with the surface of the graphene heat dissipation fin 12. The gold-sprayed layer 2 also extends from the surface of the graphene heat dissipation fin 12 to the exposed surface of the heat pipe 4.

[0053] Embodiment 5, the difference from Embodiment 1 or 2 is as follows: Refer to Figure 11 As shown, it further includes a heat pipe 4. The heat pipe 4 transversely penetrates the graphene heat dissipation fin 12 and straddles the heat dissipation channel 14. The gold-sprayed layer 2 extends from the surface of the graphene heat dissipation fin 12 to the exposed surface of the heat pipe 4. Figure 11 The arrow in the figure indicates the flow direction of the heat-conducting fluid in the heat pipe 4.

[0054] Embodiment 6, the difference from any one of Embodiments 1 to 5 is as follows: Refer to Figure 12 As shown, a concave surface 13 is provided at the upper end of the graphene heat dissipation fin 12 only within the orthographic projection area at the center of the heat-receiving mounting surface 111.

[0055] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A novel composite graphene radiator, comprising a graphene radiator body (1) with a plurality of graphene heat dissipation fins (12) provided on its surface, characterized in that: At least a part of the surface of the graphene heat dissipation fin (12) is attached with a gold spraying layer (2).

2. The novel composite graphene radiator according to claim 1, wherein: The graphene radiator body (1) includes a graphene heat conduction base (11) and the graphene heat dissipation fin (12) which are integrally formed together. The graphene heat conduction base (11) includes a heat receiving mounting surface (111) and a main heat dissipation surface (112), and the graphene heat dissipation fin (12) is arranged on the main heat dissipation surface (112).

3. The novel composite graphene radiator according to claim 2, wherein: A perforation (15) is provided on the graphene heat conduction base (11). One end of the perforation (15) leads to the heat receiving mounting surface (111), and the other end of the perforation (15) leads to the main heat dissipation surface (112); the gold spraying layer (2) also extends to the inner wall of the perforation (15).

4. The novel composite graphene radiator according to claim 2, characterized in that: The main heat dissipation surface (112) and the heat receiving mounting surface (111) are respectively located on the upper and lower sides of the graphene heat conduction base (11), and a concave surface (13) is provided at the upper end of the graphene heat dissipation fin (12).

5. The novel composite graphene radiator according to claim 4, wherein: Part of the concave surface (13) falls within the orthographic projection area at the center of the heat receiving mounting surface (111).

6. The novel composite graphene radiator according to claim 2 or 3 or 4 or 5, characterized in that: Multiple graphene heat dissipation fins (12) are arranged in parallel, and a heat dissipation channel (14) penetrating through both sides of the graphene radiator body (1) is formed by separating adjacent graphene heat dissipation fins (12).

7. The novel composite graphene radiator according to claim 6, wherein: A heat conduction metal (3) is embedded in the heat dissipation channel (14). The heat conduction metal (3) includes a shielding surface and an exposed surface. The shielding surface is in contact with the surface of the graphene heat dissipation fin (12), and the gold spraying layer (2) also extends from the surface of the graphene heat dissipation fin (12) to the exposed surface of the heat conduction metal (3).

8. The novel composite graphene radiator according to claim 6, characterized in that: A heat pipe (4) is embedded in the heat dissipation channel (14). The heat pipe (4) extends along the channel direction, and at least part of its surface is exposed and at least part of its surface is in contact with the surface of the graphene heat dissipation fin (12). The gold spraying layer (2) also extends from the surface of the graphene heat dissipation fin (12) to the exposed surface of the heat pipe (4).

9. The novel composite graphene radiator according to claim 6, characterized in that: It also includes a heat pipe (4). The heat pipe (4) transversely penetrates the graphene heat dissipation fin (12) and straddles the heat dissipation channel (14), and the gold spraying layer (2) extends from the surface of the graphene heat dissipation fin (12) to the exposed surface of the heat pipe (4).

10. The novel composite graphene radiator according to claim 1, wherein: The gold spraying layer (2) is an aluminum material gold spraying layer or a copper material gold spraying layer; the graphene radiator body (1) is formed by injection molding or casting after mixing graphene, carbon nanotubes and an adhesive.

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