Thin heat pipe structure and manufacturing method thereof

Abstract

A thin heat pipe structure and a manufacturing method thereof. The thin heat pipe structure includes a tubular body and a mesh body. The tubular body has a chamber and a working fluid. At least one first channel and at least one second channel are formed on an inner wall face of the chamber. The first and second channels extend to intersect each other. The mesh body is attached to the inner wall face of the chamber. The thin heat pipe structure is able to transfer heat in both axial direction and radial direction. By means of the manufacturing method, the heat pipe can be slimmed and the ratio of good products can be greatly increased.

1 . A thin heat pipe structure comprising:
 a tubular body having a chamber and a working fluid, an inner wall face of the chamber being formed with at least one first channel and at least one second channel, the first and second channels extending to intersect each other; and   a mesh body having multiple meshes, the mesh body being attached to the inner wall face of the chamber.   
     
     
         2 . The thin heat pipe structure as claimed in  claim 1 , wherein surfaces of the first and second channels having sintered powder. 
     
     
         3 . The thin heat pipe structure as claimed in  claim 2 , wherein the sintered powder is selected from a group consisting of copper powder and aluminum powder. 
     
     
         4 . The thin heat pipe structure as claimed in  claim 1 , wherein the tubular body has a first closed end and a second closed end in communication with the chamber. 
     
     
         5 . The thin heat pipe structure as claimed in  claim 1 , wherein the first channel extends in an arcuate form and the second channel also extends in an arcuate form, the first and second channels intersecting each other at at least one intersection section. 
     
     
         6 . The thin heat pipe structure as claimed in  claim 1 , wherein the first channel extends in a spiral form and the second channel also extends in a spiral form, the first and second channels intersecting each other at at least one intersection section. 
     
     
         7 . The thin heat pipe structure as claimed in  claim 4 , wherein first and second channels are only formed in positions adjacent to the first and second closed ends of the tubular body. 
     
     
         8 . A manufacturing method for a thin heat pipe structure, comprising steps of:
 preparing a hollow tubular body and a mesh body;   forming at least one first channel and at least one second channel on an inner wall face of the tubular body;   attaching the mesh body to the inner wall face of the tubular body;   pressing the tubular body into a flat state;   vacuuming the tubular body and filling working fluid into the tubular body; and   sealing the tubular body.   
     
     
         9 . The manufacturing method for the thin heat pipe structure as claimed in  claim 8 , further comprising a step of heat-treating the tubular body after the step of pressing the tubular body into the flat state, the tubular body and the mesh body disposed in the tubular body being heated by means of heat treatment after pressed into the flat state. 
     
     
         10 . The manufacturing method for the thin heat pipe structure as claimed in  claim 9 , wherein the heat treatment is diffusion bonding. 
     
     
         11 . The manufacturing method for the thin heat pipe structure as claimed in  claim 8 , wherein in the step of pressing the tubular body into the flat state, the tubular body is flattened by means of pressing. 
     
     
         12 . The manufacturing method for the thin heat pipe structure as claimed in  claim 8 , wherein in the step of forming at least one first channel and at least one second channel on the inner wall face of the tubular body, the first and second channels are formed by means of turning or milling.