Flat heat pipe structure

Abstract

A flat heat pipe structure includes a flat pipe, a radial capillary structure and an axial capillary structure. The pipe has a containing space for sealing and storing a working fluid, and the pipe is formed by two opposite bottom walls and two sidewalls laterally and respectively disposed on the two bottom walls, and the pipe further has an evaporation portion, and the radial capillary structure is situated in the evaporation portion and radially surrounded and attached onto the two bottom walls and two sidewalls, and the axial capillary structure is extended in a lengthwise direction of the pipe, disposed in the containing space, and attached onto one of the sidewalls, and the axial capillary structure is extended to the evaporation portion of the pipe and coupled to the radial capillary structure.

1 . A flat heat pipe structure, comprising:
 a flat pipe, including a flat containing space formed therein, and containing a working fluid, and the pipe being formed by two opposite bottom walls and two sidewalls laterally and respectively disposed on the two bottom walls, and provided for enclosing and defining the containing space, and the pipe further having an evaporation portion;   a radial capillary structure, disposed in the evaporation portion of the pipe, and radially surrounded and attached onto the two bottom walls and the two sidewalls; and   an axial capillary structure, extended along a lengthwise direction of the pipe, disposed in the containing space, and attached onto one of the sidewalls, and the axial capillary structure being extended to the evaporation portion of the pipe and coupled to the radial capillary structure.   
     
     
         2 . The flat heat pipe structure of  claim 1 , wherein the evaporation portion of the pipe is situated at an end of the pipe. 
     
     
         3 . The flat heat pipe structure of  claim 1 , wherein the evaporation portion of the pipe is situated at a middle section of the pipe. 
     
     
         4 . The flat heat pipe structure of  claim 1 , wherein the evaporation portion of the pipe comes with a plurality, and the evaporation portions are situated at any end or a middle section of the pipe. 
     
     
         5 . The flat heat pipe structure of  claim 1 , wherein the radial capillary structure is a metal mesh. 
     
     
         6 . The flat heat pipe structure of  claim 1 , wherein the radial capillary structure is made of a sintered powder. 
     
     
         7 . The flat heat pipe structure of  claim 1 , wherein the axial capillary structure is a strip-shaped fiber bundle. 
     
     
         8 . The flat heat pipe structure of  claim 1 , wherein the axial capillary structure is formed by rolling a metal mesh into a strip shape. 
     
     
         9 . The flat heat pipe structure of  claim 1 , wherein the axial capillary structure is a powder sintered into a strip shape. 
     
     
         10 . The flat heat pipe structure of  claim 1 , wherein the axial capillary structure is a ditch formed on one of the sidewalls. 
     
     
         11 . The flat heat pipe structure of  claim 1 , wherein the axial capillary structure further includes a coupling section extended from the axial capillary structure and attached onto a distal surface of the pipe.