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Manufacturing method of sintered heat pipe

A manufacturing method and sintering technology, applied in indirect heat exchangers, lighting and heating equipment, etc., can solve the problems of large capillary force, small liquid return resistance, etc., and achieve the effect of strong capillary force

Inactive Publication Date: 2008-03-26
FU ZHUN PRECISION IND SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the single capillary structure of this structure cannot take into account the large capillary force and small liquid return resistance at the same time.

Method used

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  • Manufacturing method of sintered heat pipe
  • Manufacturing method of sintered heat pipe

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Experimental program
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Embodiment Construction

[0011] Fig. 1 is a schematic axial cross-sectional view of the first embodiment of the sintered heat pipe of the present invention, the sintered heat pipe 10 includes a metal shell 12, the inner wall of the shell 12 is formed with a multilayer capillary structure 14 composed of sintered powder particles, The powder particles can be ceramic powder particles, or metal powder particles such as copper powder. Outwards are the inner layer 141, the middle layer 142 and the outer layer 143 in sequence, and the particle sizes used between the layers are different from each other and are arranged in the order of increasing from the inner wall of the housing 12 to the axial direction, the inner layer The powder particle size of 141 is the smallest, followed by the middle layer 142, and the powder particle size of the outer layer 143 is the largest, that is, the three layers are arranged in order of increasing particle size from the inside to the outside, so that the resulting mixed capil...

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Abstract

Present invention discloses a sintering type heat tube and manufacturing method. Said method includes 1, providing a metallic shell and at least three kinds of metal powder with different particle size, 2, in turn filling above-mentioned metal powder in particle size scaling up or degressive sequence, each time using a cored bar as structure layer thickness control and rapid sintering,3, whole sintering after all metal powder filling-in, pulling out cored bar after completing sintering, 4, filling working fluid in shell cavity and enclosing said shell, to obtain sintering type heat tube with mutually complicated multiwall capillary structure in inner wall and distributed according to particle size scaling up or degressive sequence.

Description

【Technical field】 [0001] The invention relates to a manufacturing method of a heat transfer device, in particular to a manufacturing method of a sintered heat pipe utilizing capillary principle for heat transfer. 【Background technique】 [0002] In the existing field of heat dissipation, heat pipes are widely used due to their fast heat transfer characteristics. They use the principle that the working liquid in the shell absorbs or releases a large amount of heat when the gas and liquid phases are transformed. The inner wall of the shell is usually A capillary structure is provided to facilitate the reflux of the condensed liquid. Its function is to provide the driving force required to accelerate the reflux of the condensed liquid. The driving force comes from the pressure difference generated by capillary action. Commonly used capillary structures are groove-shaped and wire mesh-shaped. Or sintered metal powder, etc. When in use, one end of the heat pipe (the evaporating e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D15/04
Inventor 吴荣源洪居万骆长定郑景太
Owner FU ZHUN PRECISION IND SHENZHEN