Heat dissipation module and its manufacturing method

Abstract

Provided is a heat dissipation module and a manufacturing method of the heat dissipation module. According to the heat dissipation module and the manufacturing method of the heat dissipation module, a hollow aluminum material pipe is sleeved on a corresponding heat pipe to form an aluminum skin heat pipe, at least one aluminum skin heat pipe is placed in casting mold space of a press-casting mold, fins which penetrate through the press-casting mold are arranged on the press-casting mold, wherein the number of the fins is a plural, and then aluminum materials are injected into the casting mold space of the press-casting mold so as to form the heat dissipation module. A press-casting manufacturing procedure is used for forming the melted aluminum materials, coating at least one aluminum skin heat pipe, and combining the fins so as to form the heat dissipation module.

Description

technical field [0001] The invention relates to a heat dissipation module and its manufacturing process, in particular to a heat dissipation module which uses a die-casting process to form a molten metal material to coat an aluminum-skinned heat pipe and its manufacturing method. Background technique [0002] In the past, superconducting elements that were often used for heat dissipation or heat transfer, such as heat pipes, etc., passed through the internal vacuum environment to provide the working fluid (working fluid) injected into it to produce a liquid-vapor phase change due to heat. , and then transfer heat with steam, and then return to liquid state for reflux cycle due to cooling. In the past, there are also plate type heat pipes in which a plurality of heat pipes are arranged in a solid or hollow metal plate, or heat pipes in the shape of round tubes are formed by pressing processes such as rolling or extrusion. [0003] However, general flat heat pipes are somewha...

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Problems solved by technology

[0003] However, general flat heat pipes are somewhat insufficient in strength, especially difficult to cooperate with the arrangement of heat dissipation elements such as fins; and to cover the heat pipe with a solid or hollow metal plate, the gap caused by the heat pipe and the metal plate must be considered. Thermal resistance problem

Especially, in the case of the penetration or embedding of solid metal plate heating pipes, it is difficult to control the tolerance by penetration. If it is too loose, it is necessary to add a medium such as thermal paste to reduce the gap. If it is too tight, it will increase the penetration process of the heat pipe. The degree of difficulty; if it is buried, it is easy to affect the heat transfer between the metal plate and the heat pipe (usually the wall of the heat pipe is made of copper) due to the different materials.

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