Method for manufacturing depressed heat pipe

Abstract

First, a heat pipe containing a work fluid is provided. The heat pipe is not pressed until the work fluid turns into a vapor phase so as to form a desired shape. The method can be employed to shape a round cross-section of a heat pipe into an oblate one.

What is claimed is: 
     
         1 . A method for manufacturing a depressed heat pipe comprising the steps in the order named:
 a) providing a heat pipe containing a work fluid;   b) vaporizing the work fluid; and   c) pressing the heat pipe to form a depressed portion thereon.   
     
     
         2 . The method of  claim 1 , wherein the heat pipe of the step a) has a round cross-section. 
     
     
         3 . The method of  claim 1 , wherein the step b) is performed by heating up the heat pipe to a temperature range of 80° C. to 200° C. 
     
     
         4 . The method of  claim 1 , wherein the step c) is performed by employing an upper mold and a lower mold. 
     
     
         5 . The method of  claim 4 , wherein the step c) is to heat up the upper mold and the lower mold to a temperature range of 80° C. to 200° C. 
     
     
         6 . The method of  claim 1 , wherein the step c) is to form a flat pressed portion. 
     
     
         7 . The method of  claim 1 , wherein the step c) further comprises a seat to be connected with the heat pipe, the seat is provided with a trough for accommodating the heat pipe. 
     
     
         8 . The method of  claim 7 , wherein the trough is applied with a thermo-conductive medium. 
     
     
         9 . The method of  claim 8 , wherein the thermo-conductive medium is thermal grease.