CN-224202260-U - Thin type braided heat pipe with anti-corrosion function

CN224202260UCN 224202260 UCN224202260 UCN 224202260UCN-224202260-U

Abstract

The utility model discloses a thin type braided heat pipe with an anti-corrosion function, which comprises an outer layer, an intermediate layer, an inner layer and a pipe shell, wherein the pipe shell is arranged at the center of the thin type braided heat pipe with the anti-corrosion function, the inner layer is arranged on the inner surface of the pipe shell, the intermediate layer is sleeved on the outer surface of the pipe shell, the outer layer is sleeved on the outer side of the intermediate layer to form a sequentially nested multi-layer pipe structure, the pipe shell is arranged to seal a flexible pipe cavity, the inner layer is arranged to be a capillary core layer, the intermediate layer is arranged to be a composite heat conducting layer, and the outer layer is arranged to be a braided protection layer. The thin type braided heat pipe with the anti-corrosion function not only can strengthen the anti-corrosion, wear-resistant and shock-resistant performances of the heat pipe based on the outer braided structure, but also can effectively improve the application situation of insufficient weight reduction of the heat pipe.

Inventors

LIAO YONGHONG
QI YU
XU JIACHENG

Assignees

惠州丰楷电子科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250606

Claims (10)

1. The thin type braided heat pipe with the anti-corrosion function is characterized by comprising an outer layer, an intermediate layer, an inner layer and a pipe shell, wherein the pipe shell is arranged in the center of the thin type braided heat pipe with the anti-corrosion function, the inner layer is arranged on the inner surface of the pipe shell, the intermediate layer is sleeved on the outer surface of the pipe shell, and the outer layer is sleeved on the outer side of the intermediate layer, so that a sequentially nested multi-layer pipe structure is formed; The shell is provided with a closed flexible pipeline cavity for accommodating working media, the inner layer is provided with a capillary core layer for driving the working media in the shell to flow back to the evaporation section from the condensation section, so that flow resistance is reduced and working media are avoided from direct current, the middle layer is provided with a composite heat conducting layer for rapidly conducting heat from the evaporation section to the condensation section, meanwhile, the shape of the shell can be supported, the shell is prevented from collapsing, the outer layer is provided with a woven protection layer, and the wear resistance and corrosion resistance of the heat pipe are enhanced while external mechanical impact is resisted.
2. The thin type braided heat pipe with an anticorrosive function according to claim 1, wherein the pipe shell wall thickness is set to 0.15-0.25mm.
3. The thin type braided heat pipe with anti-corrosion function according to claim 2, wherein the pipe case comprises two polyimide film layers and a copper film layer, and the two polyimide film layers are respectively coated on the inner and outer side surfaces of the copper film layer, thereby forming a telescopic structure.
4. A thin type braided heat pipe with an anticorrosive function according to claim 3, wherein the copper film layer has a wall thickness of 4-8 μm.
5. The thin type woven heat pipe with corrosion protection according to claim 4, wherein the thickness of each polyimide film layer is set to 40-60 μm.
6. The corrosion resistant thin knit heat pipe of claim 5 wherein the inner layer comprises a laser sintered copper powder layer and a copper knit layer, the copper knit layer being disposed on the inner surface of the pipe shell and the laser sintered copper powder layer being disposed on the inner surface of the copper knit layer to form a nested configuration.
7. The thin type braided heat pipe with an anticorrosive function according to claim 6, wherein the laser sintered copper powder layer is provided in a porous structure.
8. The thin type braided heat pipe with an anticorrosive function according to claim 7, wherein the copper braid is uniformly arranged with micro grooves.
9. The thin type braided heat pipe with an anticorrosive function according to claim 8, wherein the intermediate layer is provided as a copper-plated carbon fiber braided net.
10. The thin type braided heat pipe with an anticorrosive function according to claim 9, wherein the outer layer is provided as a stainless steel wire three-dimensional braided pipe.

Description

Thin type braided heat pipe with anti-corrosion function Technical Field The utility model relates to the technical field of heat pipes, in particular to a thin type braided heat pipe with an anti-corrosion function. Background A Heat Pipe (Heat Pipe) is a high-efficiency passive Heat transfer device based on the phase change Heat transfer principle, and can rapidly transfer a large amount of Heat with a very small temperature difference. The core characteristics are that the equivalent heat conduction performance of far super-metallic materials (such as copper and aluminum) is realized by utilizing the evaporation and condensation circulation of working medium, and meanwhile, external energy input is not needed. The basic structure of the existing heat pipe product comprises a pipe shell and a capillary core, wherein a working medium flows in the pipe shell, the pipe shell is supported by a sealed metal or coincidence material shell so as to ensure the vacuum degree of the interior, the capillary core is arranged into a porous medium layer such as a metal wire mesh, sintered powder or a groove structure so as to drive the liquid working medium to flow back through capillary force, and the working medium can select corresponding liquid coolants such as water, ammonia, acetone or liquid metal according to the temperature so as to transfer heat through phase change. The heat pipe includes evaporating section and condensing section, the working medium is evaporated to vapor from the outside, the vapor flows to the condensing section in high speed under pressure difference, the vapor is condensed to liquid from the condensing section, and the heat is dissipated via the pipe shell. However, the existing heat pipe lacks a bendable adjusting function, and has insufficient protection performance such as corrosion resistance, wear resistance, impact resistance and the like, thereby limiting the wide application of the existing heat pipe product. Disclosure of utility model Accordingly, it is necessary to provide a thin type braided heat pipe having an anti-corrosion function, aiming at the technical problems of the existing heat pipe that the flexibility and the protection performance are insufficient. The thin type braided heat pipe with the anti-corrosion function comprises an outer layer, an intermediate layer, an inner layer and a pipe shell, wherein the pipe shell is arranged at the center of the thin type braided heat pipe with the anti-corrosion function, the inner layer is arranged on the inner surface of the pipe shell, the intermediate layer is sleeved on the outer surface of the pipe shell, and the outer layer is sleeved on the outer side of the intermediate layer, so that a sequentially nested multi-layer pipe structure is formed. The shell is provided with a closed flexible pipeline cavity for accommodating working media, the inner layer is provided with a capillary core layer for driving the working media in the shell to flow back to the evaporation section from the condensation section, so that flow resistance is reduced and working media are avoided from direct current, the middle layer is provided with a composite heat conducting layer for rapidly conducting heat from the evaporation section to the condensation section, meanwhile, the shape of the shell can be supported, the shell is prevented from collapsing, the outer layer is provided with a woven protection layer, and the wear resistance and corrosion resistance of the heat pipe are enhanced while external mechanical impact is resisted. In one embodiment, the shell wall thickness is set to 0.15-0.25mm. In one embodiment, the shell wall thickness is set to 0.2mm. In one embodiment, the package includes two polyimide film layers and a copper film layer, wherein the two polyimide film layers are respectively coated on the inner and outer surfaces of the copper film layer, so as to form a telescopic structure. In one embodiment, the copper film wall thickness is set to 4-8 μm. In one embodiment, the copper film wall thickness is set to 5 μm. In one embodiment, the wall thickness of each polyimide film layer is set to 40-60 μm. In one embodiment, the polyimide film layer has a wall thickness of 50 μm. In one embodiment, the copper film layer described above ensures sealability by laser welding. In one embodiment, the inner layer includes a laser sintered copper powder layer and a copper braid layer, the copper braid layer is disposed on the inner surface of the shell, and the laser sintered copper powder layer is disposed on the inner surface of the copper braid layer, thereby forming a nested structure. In one embodiment, the laser sintered copper powder layer is provided in a porous structure; In one embodiment, the copper braid is uniformly provided with micro-grooves. In one embodiment, the laser sintered copper powder layer described above was set to 0.3mm thick and the porosity was set to 40%. In one embodiment, the trench width of the copper b