End sealing structure for heat pipe

Abstract

An end sealing structure for heat pipe includes a sealed conical end formed at an end of the heat pipe, which is formed from a hollow metal pipe having a dead end opposite to the sealed conical end. The conical end is sealed at an outmost end thereof by more than one layer of weld bond, and coated with more than one layer of tin solder to enclose the weld bonds and the conical end, enabling the sealed conical end to keep an absolutely sealed state even the heat pipe is compressed in fabricating or under high internal pressure in a heated state. The heat pipe with the sealed conical end can therefore provide good heat-transport capability in a computer or any other apparatus that generates heat during operation thereof.

1 . An end sealing structure for heat pipe, said heat pipe being formed from a hollow metal pipe having a first end that is a dead end and a second end opposite to said first end, said end sealing structure comprising a sealed conical end formed at said second end of said metal pipe, said sealed conical end having an outer diameter smaller than that of said metal pipe and having more than one layer of weld bonds at an outmost end thereof.  
   
   
       2 . The end sealing structure for heat pipe as claimed in  claim 1 , wherein said sealed conical end has two layers of weld bonds at the outmost end thereof.  
   
   
       3 . The end sealing structure for heat pipe as claimed in  claim 1 , wherein said sealed conical end has more than two layers of weld bonds at the outmost end thereof.  
   
   
       4 . The end sealing structure for heat pipe as claimed in  claim 2 , wherein said sealed conical end is coated with one layer of tin solder to enclose said weld bonds and said conical end.  
   
   
       5 . The end sealing structure for heat pipe as claimed in  claim 3 , wherein said sealed conical end is coated with one layer of tin solder to enclose said weld bonds and said conical end.  
   
   
       6 . The end sealing structure for heat pipe as claimed in  claim 2 , wherein said sealed conical end is coated with more than one layer of tin solder to enclose said weld bonds and said conical end.  
   
   
       7 . The end sealing structure for heat pipe as claimed in  claim 3 , wherein said sealed conical end is coated with more than one layer of tin solder to enclose said weld bonds and said conical end.