Heat pipe and manufacturing method for the same

Abstract

A heat pipe containing a sintered powder wick and a corresponding manufacturing method improves the capillarity action of the heat pipe. Through sintering copper powder onto the surface of a copper wick, an evenly sintered result can be obtained. Then, the wick with sintered surface is placed into a hollow copper pipe to provide sufficient capillary force to a working fluid.

1 . A heat pipe, comprising: 
 a metallic pipe; and    a wick disposed in the metallic pipe and covered with sintered powder.    
   
   
       2 . The heat pipe of  claim 1  wherein the metalic pipe is a hollow pipe with a smooth inner wall.  
   
   
       3 . The heat pipe of  claim 1  wherein the inner wall of the metallic pipe is covered with sintered powder.  
   
   
       4 . The heat pipe of  claim 1  wherein the wick is a metallic stick.  
   
   
       5 . The heat pipe of  claim 4  wherein the wick is a copper stick.  
   
   
       6 . The heat pipe of  claim 1  wherein the wick is a bundle of fibers.  
   
   
       7 . She heat pipe of  claim 6  wherein the bundle of fibers are copper fibers.  
   
   
       8 . The heat pipe of  claim 6  wherein the fiber is a fiber capable of being sintered with metal.  
   
   
       9 . The heat pipe of  claim 1  wherein the metallic pipe is a copper pipe.  
   
   
       10 . The heat pipe of  claim 1  wherein the metallic pipe contains a working fluid.  
   
   
       11 . The heat pipe of  claim 1  wherein the metallic pipe is a sealed pipe.  
   
   
       12 . The heat pipe of  claim 1  wherein the sintered powder is made of copper powder.  
   
   
       13 - 21 . (canceled)