Heat pipe structure

Abstract

A heat pipe structure includes a tubular body. The tubular body has a chamber, a working fluid and a first capillary structure. The chamber is defined with at least one first section, a second section and a third section. The first, second and third sections are connected with each other. The first capillary structure is disposed in the second section. By means of the above arrangement, the pressure impedance of the chamber of the heat pipe is lowered to greatly increase vapor-liquid circulation efficiency of the working fluid in the chamber.

What is claimed is: 
     
         1 . A heat pipe structure comprising a tubular body, the tubular body having a chamber, a working fluid and a first capillary structure, the chamber being defined with at least one first section, a second section and a third section, the first, second and third sections being connected with each other, the first capillary structure being disposed in the second section. 
     
     
         2 . The heat pipe structure as claimed in  claim 1 , wherein a surface of the chamber is further formed with a second capillary structure, the second capillary structure being selected from a group consisting of channeled structure, hydrophilic/hydrophobic coating and capillary microstructure body. 
     
     
         3 . The heat pipe structure as claimed in  claim 1 , wherein the first capillary structure extends from the second section to the first section or the third section. 
     
     
         4 . The heat pipe structure as claimed in  claim 1 , wherein the chamber has a smooth inner wall. 
     
     
         5 . The heat pipe structure as claimed in  claim 1 , wherein the tubular body further includes a coating, the coating being disposed in the first section or the third section. 
     
     
         6 . The heat pipe structure as claimed in  claim 1 , wherein the first capillary structure is selected from a group consisting of sintered powder body, mesh body, fiber body and porous structure body. 
     
     
         7 . The heat pipe structure as claimed in  claim 1 , wherein the chamber further has a first side and a second side opposite to the first side, the first capillary structure being disposed on the first side to define a first flow way. 
     
     
         8 . The heat pipe structure as claimed in  claim 7 , wherein the chamber further has a third side and a fourth side, the first capillary structure being disposed between the third and fourth sides in connection with the third and fourth sides to define a first flow way and a second flow way. 
     
     
         9 . The heat pipe structure as claimed in  claim 7 , wherein the chamber further has a third side and a fourth side, multiple first capillary structures being disposed between the third and fourth sides in connection with the third and fourth sides to define multiple first flow ways.