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Preparation methods for novel multi-scale flat aluminum belt heat pipe

A multi-scale, flat-belt technology, applied in the direction of lighting and heating equipment, indirect heat exchangers, etc., can solve the problems of slow capillary pumping speed and insufficient heat dissipation capacity, and achieve simple and easy technical means, easy promotion and application, and low cost cheap effect

Inactive Publication Date: 2016-07-27
汤勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming of slow capillary pumping speed in the liquid-absorbing core of the traditional aluminum flat-strip heat pipe, provide a new type of manufacturing method of multi-scale aluminum flat-strip heat pipe with simple structure and convenient processing, and solve the problem of existing traditional aluminum flat-strip heat pipe. The problem of insufficient cooling capacity with heat pipes

Method used

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  • Preparation methods for novel multi-scale flat aluminum belt heat pipe
  • Preparation methods for novel multi-scale flat aluminum belt heat pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The manufacturing method of the novel multi-scale aluminum flat strip heat pipe of the present invention can be realized through the following steps:

[0031] S1 aluminum flat belt heat pipe extrusion die opening;

[0032] S2 cleans and dries the extrusion mold;

[0033] S3 electrochemically corrodes the surface of the dried extrusion die;

[0034] S4 cleans and dries the surface of the extrusion die after corrosion treatment;

[0035] S5 uses an extrusion mold with a roughened surface and one-time extrusion molding to obtain an aluminum flat strip heat pipe with multi-scale micro-grooves 8 .

[0036] The above step 3 includes the treatment of roughening the surface of the extrusion die, specifically electrifying both ends of the extrusion die and completely immersing it in the corrosive agent.

[0037] In the above step 3, the corrosive agent is an acid or alkaline reagent that chemically reacts with the surface of the extrusion die.

[0038] The aluminum flat stri...

Embodiment 2

[0040] The manufacturing method of the novel multi-scale aluminum flat strip heat pipe of the present invention can be realized through the following steps:

[0041] S1 aluminum flat belt heat pipe extrusion die opening;

[0042] S2 uses an extrusion die to extrude at one time to obtain an aluminum flat belt heat pipe;

[0043] S3 performs secondary broaching on the aluminum flat strip heat pipe obtained by one-time extrusion molding, and obtains the aluminum flat strip heat pipe with multi-scale micro-grooves 8 .

[0044] The surface of the broach used in step 2 above has tiny cutting edges.

[0045] The aluminum flat strip heat pipe obtained above has micro-grooves 8 evenly distributed on the surface of the inner grooves 7 of the independent heat transfer channel.

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Abstract

The invention provides two methods for manufacturing a novel multi-scale flat aluminum belt heat pipe. The first method comprises the steps that S1, a flat aluminum belt heat pipe extrusion die is opened; S2, surface roughening treatment is conducted on the flat aluminum belt heat pipe extrusion die; and S3, extrusion forming is completed at a time through the extrusion die subjected to surface roughening, and the flat aluminum belt heat pipe with multi-scale micro grooves is obtained. The second method comprises the steps that S1, a flat aluminum belt heat pipe extrusion die is opened; S2, extrusion forming is conducted at a time through the extrusion die, and the flat aluminum belt heat pipe is obtained; and S3, secondary broaching is conducted on the flat aluminum belt heat pipe which is obtained through extrusion forming at a time, and the flat aluminum belt heat pipe with multi-scale micro grooves is obtained. The capillary suction force is improved through the micro grooves, and the heat transfer property and mass transfer property of the flat aluminum belt heat pipe are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of heat dissipation of electrical components, in particular to a method for preparing a novel multi-scale aluminum flat strip heat pipe. Background technique [0002] With the extensive social demand for electronic equipment, electronic chips are constantly developing towards high efficiency, high integration, and miniaturization, and electronic products are also constantly developing towards ultra-thin and portable. For a series of heat dissipation problems such as small cooling space for components and high heat flux density, the traditional heat dissipation methods can no longer meet the heat dissipation requirements, and it is urgent to develop and optimize the cooling system for electronic components. There are various structures of heat sinks for electrical components in the prior art, among which aluminum flat strip heat pipes are widely used in electronic products with small spaces due to their small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02
CPCF28D15/02
Inventor 汤勇邢迪陈海牧陈灿
Owner 汤勇
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