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Villous fin fiber composite groove type special-shaped heat pipe and manufacturing method thereof

A technology of fiber composite and velvet fins, which is applied in the field of velvet fin fiber composite grooved special-shaped heat pipes and its production, can solve the problem of restricting the application of grooved heat pipes, the difficulty of satisfying heat dissipation requirements of grooved heat pipes, and the destruction of micro grooves Structure and other issues, to achieve the effect of reducing resistance, making up for low limit power, and enhancing heat transfer performance

Inactive Publication Date: 2017-05-31
CRRC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, affected by the capillary limit of the micro-groove structure, it is difficult for the grooved heat pipe to meet the growing demand for heat dissipation.
At the same time, bending, flattening and other processes will seriously damage the micro-groove structure, which limits the application of grooved heat pipes

Method used

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  • Villous fin fiber composite groove type special-shaped heat pipe and manufacturing method thereof
  • Villous fin fiber composite groove type special-shaped heat pipe and manufacturing method thereof
  • Villous fin fiber composite groove type special-shaped heat pipe and manufacturing method thereof

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Embodiment Construction

[0028] Such as figure 1 As shown, a special-shaped heat pipe with velvet fin fiber composite grooves includes a heat pipe body 1 with a special-shaped cross section, grooves 2 are arranged on the inner wall of the heat pipe body, and protrusions are formed between adjacent grooves 2. The inner wall of the heat pipe main body 1 is laid with a velvet-shaped fin fiber layer 3 . The special-shaped heat pipe refers to a heat pipe with a cross section that is not circular, and can be specifically oval, rectangular, or oblate. It can be processed into other regular or irregular shapes as required.

[0029] The velvet wing fiber is a filamentous body with a rough surface made by cutting with a special multi-tooth cutter. Due to the extrusion and friction between the rake face of the cutter and the forming surface, irregular protrusions or defects are formed on the fiber surface. , and a large number of tiny velvet-like fin structures, the filaments are slender and continuous with hi...

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Abstract

The invention discloses a villous fin fiber composite groove type special-shaped heat pipe. The villous fin fiber composite groove type special-shaped heat pipe comprises a heat pipe body with a special-shaped section. Grooves are formed in the inner wall of the heat pipe body. A villous fin fiber layer is laid on the inner wall of the heat pipe body. Villous fin fibers are metal fibers which are provided with irregular protrusions and / or pits on surfaces and are of a villous fin structure. The invention further discloses a manufacturing method of the villous fin fiber composite groove type special-shaped heat pipe. According to the villous fin fiber composite groove type special-shaped heat pipe, the capillarity attraction of a heat pipe wick is effectively improved, split-flow of liquid and steam inside the heat pipe is realized, the heat transfer performance of the heat pipe is effectively enhanced, the defect that groove type heat pips are low in threshold power is overcome, liquid permeability is improved, the resistance of working medium backflow is reduced, and the defect that traditional groove type heat pipes cannot be bent or flattened is overcome; and the heat pipe is a special-shaped pipe, so that the air flow section area is increased, air resistance is effectively reduced, the cooling air flow quantity is increased, and heat exchange performance is improved.

Description

technical field [0001] The invention relates to a heat pipe, in particular to a velvet wing fiber composite grooved special-shaped heat pipe and a manufacturing method thereof. Background technique [0002] The development of miniaturization, light weight, and high power of electronic equipment has caused the effective heat dissipation space inside the equipment to decrease and the heat flux density to increase. The problem of heat dissipation has become the key to the further development of electronic equipment. As an effective heat dissipation device, the heat pipe has been widely used since its inception. The grooved heat pipe is light in weight and small in size, and has become a commonly used heat dissipation device. However, affected by the capillary limit of the micro-groove structure, it is difficult for the grooved heat pipe to meet the growing demand for heat dissipation. At the same time, processes such as bending and flattening will seriously damage the micro-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/04F28F1/02
CPCF28D15/046F28F1/02F28F2001/027
Inventor 刘俊杰侯波孔丽君王硕谭文才
Owner CRRC
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