Heat pipe heat dissipation structure

Abstract

A heat pipe heat dissipation structure includes a main body and at least one first capillary structure. The main body has a first inner side, a second inner side, a third inner side, a fourth inner side and at least one chamber filled with a working fluid. The first capillary structure is disposed in the chamber. The first capillary structure includes a first section disposed on the first inner side and a second section extending from two sides of the first section along the adjacent third and fourth inner sides. The first section has a thickness larger than that of the second section. The heat pipe heat dissipation structure has better heat transfer efficiency.

What is claimed is: 
     
         1 . A heat pipe heat dissipation structure comprising:
 a main body having a first inner side, a second inner side opposite to the first inner side, a third inner side, a fourth inner side opposite to the third inner side and a chamber, a working fluid being filled in the chamber; and   at least one first capillary structure disposed in the chamber, the first capillary structure including a first section and a second section, the first section being formed on the first inner side, the second section extending from two sides of the first section along the adjacent third and fourth inner sides, the first section having a thickness larger than that of the second section.   
     
     
         2 . The heat pipe heat dissipation structure as claimed in  claim 1 , wherein the first, second, third and fourth inner sides together define the chamber. 
     
     
         3 . The heat pipe heat dissipation structure as claimed in  claim 1 , wherein the second inner side is divided into a capillary forming section and at least one capillary-free section, the capillary-free section being positioned on two sides of the capillary forming section in adjacency to the corresponding third and fourth inner sides respectively. 
     
     
         4 . The heat pipe heat dissipation structure as claimed in  claim 3 , wherein at least one swelling capillary section is further disposed in the main body, the swelling capillary section being disposed on the capillary forming section of the second inner side opposite to the first section. 
     
     
         5 . The heat pipe heat dissipation structure as claimed in  claim 4 , wherein the swelling capillary section has a free end extending from the capillary forming section to connect with the opposite first section. 
     
     
         6 . The heat pipe heat dissipation structure as claimed in  claim 5 , wherein the inner wall of the chamber, the first capillary structure and the swelling capillary section together define a first vapor passage and a second vapor passage, the first vapor passage being defined by the first, second and third inner sides, the first capillary structure and the swelling capillary section, the second vapor passage being defined by the first, second and fourth inner sides, the first capillary structure and the swelling capillary section. 
     
     
         7 . The heat pipe heat dissipation structure as claimed in  claim 3 , wherein at least one swelling capillary section is further disposed in the main body, the swelling capillary section being disposed on the first section opposite to the second inner side. 
     
     
         8 . The heat pipe heat dissipation structure as claimed in  claim 7 , wherein the swelling capillary section has a free end extending from the first section to connect with the opposite capillary forming section. 
     
     
         9 . The heat pipe heat dissipation structure as claimed in  claim 8 , wherein the inner wall of the chamber, the first capillary structure and the swelling capillary section together define a first vapor passage and a second vapor passage, the first vapor passage being defined by the first, second and third inner sides, the first capillary structure and the swelling capillary section, the second vapor passage being defined by the first, second and fourth inner sides, the first capillary structure and the swelling capillary section. 
     
     
         10 . The heat pipe heat dissipation structure as claimed in  claim 1 , wherein an outer face of the first inner side of the main body is correspondingly attached to at least one heat-generating component for conducting heat, at least one heat dissipation unit being correspondingly connected with an outer face of the second inner side of the main body, the heat dissipation unit being selected from a group consisting of a heat sink, a radiating fin assembly and a water-cooled unit. 
     
     
         11 . The heat pipe heat dissipation structure as claimed in  claim 1 , wherein the inner wall face of the chamber is a smooth wall face. 
     
     
         12 . The heat pipe heat dissipation structure as claimed in  claim 1 , wherein a second capillary structure is further disposed on the inner wall face of the chamber, the second capillary structure being formed on the first, second, third and fourth inner sides and correspondingly connected with the first capillary structure. 
     
     
         13 . The heat pipe heat dissipation structure as claimed in  claim 1 , wherein the first capillary structure is selected from a grouping consisting of a mesh body, a fiber body, a sintered powder body, a combination of mesh body and sintered powder body and a microstructure body. 
     
     
         14 . The heat pipe heat dissipation structure as claimed in  claim 4 , wherein the swelling capillary section is selected from a grouping consisting of a mesh body, a fiber body, a sintered powder body, a combination of mesh body and sintered powder body and a microstructure body. 
     
     
         15 . The heat pipe heat dissipation structure as claimed in  claim 7 , wherein the swelling capillary section is selected from a grouping consisting of a mesh body, a fiber body, a sintered powder body, a combination of mesh body and sintered powder body and a microstructure body. 
     
     
         16 . The heat pipe heat dissipation structure as claimed in  claim 12 , wherein the second capillary structure is selected from a grouping consisting of a mesh body, a fiber body, a sintered powder body, a combination of mesh 
     
     
         17 . The heat pipe heat dissipation structure as claimed in  claim 1 , wherein the first section has a radial extension volume larger than that of the second section.