Thin-type heat pipe structure

Abstract

A thin-type heat pipe structure includes a flat pipe, a second capillary structure, a third capillary structure, and a working fluid. The flat pipe has two boards and a containing chamber. A first capillary structure is set on the inner surface of the boards. The second capillary structure is contained in the containing chamber and covers a part of the first capillary structure. The third capillary structure is a stripe, contained in the containing chamber and clipped between the second capillary structure and another part of the first capillary structure. The working fluid is filled in the containing chamber. The overall design speeds up inner air's outflow and inner liquid's backflow.

1 . A thin-type heat pipe structure, comprising:
 a flat pipe, having two boards corresponding to each other and a containing chamber surrounded by the two boards, a first capillary structure being set up on the inner surface of the boards;   a second capillary structure, contained inside the containing chamber and covering a part of the first capillary structure;   a third capillary structure, being a stripe, contained inside the containing chamber and clipped in between the second capillary structure and another part of the first capillary structure; and   a working fluid, filled in the containing chamber.   
     
     
         2 . The structure of  claim 1 , wherein the first capillary structure is a plurality of furrows, a plurality of smooth surfaces, or a combination of a plurality of furrows and a plurality of smooth surfaces formed on the boards. 
     
     
         3 . The structure of  claim 1 , wherein the second capillary structure is a metal mesh. 
     
     
         4 . The structure of  claim 1 , wherein the third capillary structure is a sintered metal powder component or a fiber bundle. 
     
     
         5 . The structure of  claim 1 , wherein the first capillary structure is a plurality of furrows formed on the boards, the second capillary structure is a metal mesh, and the density of the second capillary structure is higher than the density of the first capillary structure. 
     
     
         6 . The structure of  claim 5 , wherein the third capillary structure is a sintered metal powder component, and the density of the third capillary structure is higher than the density of the second capillary structure. 
     
     
         7 . The structure of  claim 1 , wherein two sides of the third capillary structure and the two boards surround two air passages. 
     
     
         8 . The structure of  claim 1 , wherein the flat pipe is formed through pressing a round pipe. 
     
     
         9 . A thin-type heat pipe structure, comprising:
 a flat pipe, having two boards corresponding to each other and a containing chamber formed between the two boards, the height of the two boards and the containing chamber being below 1.5 millimeters, a first capillary structure being set on the inner surface of the boards;   a second capillary structure, contained inside the containing chamber and covering a part of the first capillary structure;   a third capillary structure, being a stripe, contained inside the containing chamber and clipped in between the second capillary structure and another part of the first capillary structure; and   a working fluid, filled in the containing chamber.   
     
     
         10 . The structure of  claim 9 , wherein the first capillary structure is a plurality of furrows, a plurality of smooth surfaces, or a combination of a plurality of furrows and a plurality of smooth surfaces, formed on the boards. 
     
     
         11 . The structure of  claim 9 , wherein the second capillary structure is a metal mesh. 
     
     
         12 . The structure of  claim 9 , wherein the third capillary structure is a sintered metal powder component or a fiber bundle. 
     
     
         13 . The structure of  claim 9 , wherein the first capillary structure is a plurality of furrows formed on the boards, the second capillary structure is a metal mesh, and the density of the second capillary structure is higher than the density of the first capillary structure. 
     
     
         14 . The structure of  claim 13 , wherein the third capillary structure is a sintered metal powder component, and the density of the third capillary structure is higher than the density of the second capillary structure. 
     
     
         15 . The structure of  claim 9 , wherein two sides of the third capillary structure and the two boards surround two air passages. 
     
     
         16 . The structure of  claim 9 , wherein the flat pipe is formed through pressing a round pipe.