Flat heat pipe with capilllary structure

Abstract

A flat heat pipe with a capillary structure includes a pipe body and a capillary tissue. The pipe body is substantially hollow and flat and includes a bottom wall and a top wall opposite to the bottom wall, and both walls are formed on the pipe body, and an appropriate quantity of working fluid is sealed inside the pipe body. The capillary tissue is covered onto an internal side of the bottom wall, and the capillary tissue includes a plurality of protrusions formed inside the pipe body and extended along the lengthwise direction of the pipe body, and a gap is reserved between the protrusions and the internal side of the top wall to form an air passage. The protrusions formed by the capillary tissue can provide sufficient capillary forces and also produce the gap to form the air passage.

1 . A flat heat pipe with a capillary structure, comprising:
 a pipe body, being substantially hollow and flat, and having a bottom wall and a top wall disposed opposite to the bottom wall, both walls being formed on the pipe body, and an appropriate quantity of working fluid being sealed inside the pipe body; and   a capillary tissue, covered onto an internal side of the bottom wall;   wherein the capillary tissue includes a plurality of protrusions formed inside the pipe body and extended along the lengthwise direction of the pipe body, and a gap is reserved between the protrusions and the internal side of the top wall to form an air passage.   
     
     
         2 . The flat heat pipe with a capillary structure as recited in  claim 1 , wherein the pipe body is made of copper or aluminum. 
     
     
         3 . The flat heat pipe with a capillary structure as recited in  claim 1 , wherein the capillary tissue is a metal net or a sintered powder. 
     
     
         4 . The flat heat pipe with a capillary structure as recited in  claim 1 , wherein the capillary tissue has two protrusions. 
     
     
         5 . The flat heat pipe with a capillary structure as recited in  claim 1 , wherein the protrusion of the capillary tissue is attached onto the internal side of the top wall. 
     
     
         6 . The flat heat pipe with a capillary structure as recited in  claim 1 , further comprising a support structure disposed between the protrusion of the capillary tissue and the internal wall of the top wall. 
     
     
         7 . The flat heat pipe with a capillary structure as recited in  claim 6 , wherein the support structure is substantially in a staggered wavy form.