Heat pipe with composite wick structure

Abstract

The heat pipe of the invention includes a tube in which an evaporating portion and a condensing portion are defined; a grooved wick longitudinally and entirely disposed on an inner wall of the tube and communicating the evaporating portion with the condensing portion; a porous wick only disposed on the inner wall of the evaporating portion and covering the grooved wick in the evaporating portion; and a fiber wick in a shape of a strip, whose one end connects the porous wick and whose the other end longitudinally extends to the condensing portion.

What is claimed is: 
     
         1 . A heat pipe with composite wick structure, comprising:
 a tube in which an evaporating portion and a condensing portion are defined;   a grooved wick substantially longitudinally and entirely disposed on an inner wall of the tube and communicating the evaporating portion with the condensing portion;   a porous wick only disposed on the inner wall of the evaporating portion and covering the grooved wick in the evaporating portion; and   a fiber wick in a shape of a strip, wherein one end of the fiber wick connects the porous wick and the other end thereof longitudinally extends to the condensing portion.   
     
     
         2 . The heat pipe with composite wick structure of  claim 1 , wherein the evaporating portion is located at one end of the tube. 
     
     
         3 . The heat pipe with composite wick structure of  claim 2 , wherein the condensing portion is located at the other end of the tube. 
     
     
         4 . The heat pipe with composite wick structure of  claim 1 , wherein the porous wick is sintered powder. 
     
     
         5 . The heat pipe with composite wick structure of  claim 4 , wherein one end of the fiber wick is sintered together with the porous wick. 
     
     
         6 . The heat pipe with composite wick structure of  claim 1 , wherein one end of the fiber wick is sintered together with the porous wick. 
     
     
         7 . The heat pipe with composite wick structure of  claim 1 , wherein the fiber wick is woven fiber. 
     
     
         8 . The heat pipe with composite wick structure of  claim 1 , wherein the fiber wick is woven metallic wires. 
     
     
         9 . The heat pipe with composite wick structure of  claim 1 , wherein the other end of the fiber wick is placed in the condensing portion without fastening. 
     
     
         10 . The heat pipe with composite wick structure of  claim 1 , wherein the tube is flat in shape and the fiber wick in the condensing portion is gripped by the tube.