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Heat pipe and manufacturing method thereof

A technology for heat pipes and tube shells, applied in the field of heat pipes and their preparation, can solve the problems of large capillary force of capillary liquid-absorbing cores, unfavorable heat conduction efficiency of heat pipes, large surface area, etc., to achieve increased capillary force, reduced thermal resistance, and high-efficiency heat transfer Effect

Inactive Publication Date: 2008-08-20
吴海燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to overcome the shortcomings of the heat pipe groove type capillary liquid-absorbing core in the prior art that the capillary force is small and the thermal resistance is large, which is not conducive to the improvement of the heat conduction efficiency of the heat pipe, the purpose of the present invention is to provide a capillary liquid-absorbing core with large capillary force and high thermal resistance. Heat pipe with low resistance and large surface area

Method used

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  • Heat pipe and manufacturing method thereof
  • Heat pipe and manufacturing method thereof
  • Heat pipe and manufacturing method thereof

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] see image 3 The heat pipe 20 provided by the present invention includes a hollow tube shell 21 with both ends sealed, a capillary structure 22 formed on the inner wall surface 210 and a working fluid 23 circulating in the tube. Wherein, the tube shell 21 is generally a copper tube, and different materials such as aluminum, iron and other metals can be used according to different requirements. The radial section of the shell 21 can be a standard circle, or other shapes, such as ellipse, square, rectangle, triangle, etc. The pipe diameter is 2 mm to 200 mm, and the pipe length ranges from a few millimeters to tens of meters. The capillary structure 22 is a capillary structure extending axially or in the form of a circumferential threaded groove. The working fluid 23 includes liquids such as pure water, ammonia water, methanol, acetone, heptane, etc.,...

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Abstract

This invention provides a heat pipe including a hollow shell, a capillary structure formed on the inside wall of the shell and a working fluid sealed in the shell, among which, carbon nm tubes are deposited on the surface of the capillary structure. A preparation method is also disclosed.

Description

【Technical field】 [0001] The invention relates to a heat conduction element, in particular to a heat pipe and a preparation method thereof. 【Background technique】 [0002] In recent years, with the rapid development of electronic technology, the high frequency and high speed of electronic devices and the density and miniaturization of integrated circuits have caused a sharp increase in the heat generation of electronic devices per unit volume. In order to adapt to the above changes, the radiators used in the heat transfer related industries have evolved from no fins in the early stage to adding fins, and improved to use fins with fans, but still cannot solve the current high heat dissipation problem. As a result, heat dissipation modules combining heat pipes, fins, and fans have emerged in the industry to rapidly dissipate heat from 3C products. [0003] The Chinese patent application No. 02135056.6 published on April 28, 2004 discloses a heat pipe radiator and its manufact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/427F28D15/04H05K7/20
CPCH01L2924/0002H01L2924/00
Inventor 简扬昌
Owner 吴海燕