Micro heat pipe with poligonal cross-section manufactured via extrusion or drawing

Abstract

A micro heat pipe with a polygonal cross-section is manufactured via drawing. The micro heat pipe has flat or concave sides to allow working fluid to flow by capillary force generated at the edges of the micro heat pipe. Another micro heat pipe is manufactured by forming a plurality of through holes with a polygonal cross-section in a metal plate via extrusion, in which each of the through holes has flat or concave sides to allow working fluid to flow by capillary force generated at the edges of each of the through holes. The micro heat pipes can be manufactured easily via drawing or extrusion, can induce strong capillary force through simple structural modifications, and provide superior cooling effects.

What is claimed is:  
     
         1 . A micro heat pipe with a polygonal cross-section that is manufactured via drawing and has flat or concave sides to allow working fluid to flow by capillary force generated at the edges of the micro heat pipe.  
     
     
         2 . The micro heat pipe of  claim 1 , having at least one flat side.  
     
     
         3 . The micro heat pipe of  claim 1 , wherein the polygonal cross-section is triangular or rectangular.  
     
     
         4 . The micro heat pipe of  claim 1 , wherein a plurality of micro heat pipes with a polygonal cross-section are combined together in parallel, and working fluid is allowed to flow by capillary force generated at the edges of each of the micro heat pipes.  
     
     
         5 . A micro heat pipe manufactured by forming a plurality of through holes with a polygonal cross-section in a metal plate via extrusion, in which each of the through holes has flat or concave sides to allow working fluid to flow by capillary force generated at the edges of each of the through holes.  
     
     
         6 . The micro heat pipe of  claim 5 , wherein the through holes have irregular sides.  
     
     
         7 . The micro heat pipe of  claim 5 , wherein the through holes are interconnected in groups.  
     
     
         8 . The micro heat pipe of  claim 5 , wherein the polygonal cross-section of the through holes is triangular or rectangular.  
     
     
         9 . A micro heat pipe comprising a plurality of micro heat pipes with a polygonal cross-section sealed with a metal plate manufactured via extrusion, in which the plurality of micro heat pipes have flat or concave sides to allow working fluid to flow by capillary force generated at the edges of each of the through holes.  
     
     
         10 . The micro heat pipe of  claim 9 , wherein the plurality of micro heat pipes have at least one flat side.  
     
     
         11 . The micro heat pipe of  claim 9 , wherein the polygonal cross-section of the micro heat pipes is triangular or rectangular.