Heat pipe with grid wick structure having rhombuses

Abstract

An exemplary heat pipe includes a tube, an evaporation section and a condenser section located at two opposite ends of the tube, a grid wick structure received in the tube and abutting an inner wall of the tube, and a working fluid sealed in the tube. The grid wick structure includes a plurality of rhombuses. Each rhombus includes two opposite first included angles, one of the first included angles is at a point of the rhombus nearest one of the ends of the tube, the other first included angle is at a point of the rhombus nearest the other end of the tube. Each first included angle is smaller than 90 degrees.

What is claimed is: 
     
         1 . A heat pipe, comprising:
 a tube, the tube having an evaporation section and a condenser section located at two opposite ends thereof;   a grid wick structure received in the tube and abutting an inner wall of the tube, the grid wick structure comprising a plurality of rhombuses, each rhombus comprising two first included angles opposite to each other, one of the first included angles being at a point of the rhombus nearest one of the ends of the tube, the other first included angle being at a point of the rhombus nearest the other end of the tube, each first included angle being smaller than 90 degrees; and   a working fluid sealed in the tube.   
     
     
         2 . The heat pipe of  claim 1 , wherein each rhombus further comprises two second included angles opposite to each other, a length of an imaginary line interconnecting vertexes of the two first included angles being larger than that of an imaginary line interconnecting vertexes of the two second included angles. 
     
     
         3 . The heat pipe of  claim 2 , further comprising another grid wick structure with squares, wherein the another grid wick structure with squares and the grid wick structure with rhombuses are stacked one on the other. 
     
     
         4 . The heat pipe of  claim 3 , wherein one of the sidelines of the each square overlaps the imaginary line interconnecting the two second included angles of a corresponding one of the rhombuses. 
     
     
         5 . The heat pipe of  claim 1 , wherein an imaginary line interconnecting the two first included angles of each rhombus is substantially parallel to a longitudinal direction of the tube from the evaporation section to the condenser section. 
     
     
         6 . The heat pipe of  claim 1 , wherein the wick structure is formed by weaving wires, and a diameter of each of the wires is in a range of from 0.03 millimeters to 0.05 millimeters. 
     
     
         7 . The heat pipe of  claim 1 , wherein the first angle is smaller than 45 degrees. 
     
     
         8 . The heat pipe of  claim 1 , wherein the heat pipe is a flat heat pipe, and a thickness of the tube from one flat side of the heat pipe to the other flat side of the heat pipe is smaller than 1.5 millimeters. 
     
     
         9 . The heat pipe of  claim 1 , wherein a length of the sideline of each rhombus is in the range of from 0.10 millimeters to 0.25 millimeters. 
     
     
         10 . A heat pipe, comprising:
 a tube, the tube having an evaporation section and a condenser section located at two opposite ends thereof, the tube defining a longitudinal direction thereof from the evaporation section to the condenser section;   a grid wick structure received in the tube and abutting an inner wall of the tube, the grid wick structure being in the form of woven yarn comprising a first group of lines of yarn each oriented along a first direction and a second group of lines of yarn each oriented along a second direction different from the first direction, each two adjacent lines of the yarn oriented along the first direction and two corresponding adjacent lines of the yarn oriented along the second direction cooperatively defining a rhombus, the rhombus comprising two first included angles opposite to each other, an imaginary diagonal line interconnecting vertexes of the rhombus having the two first included angles being substantially parallel to the longitudinal direction of the tube, each first included angle being smaller than 90 degrees; and   a working fluid sealed in the tube.   
     
     
         11 . The heat pipe of  claim 10 , wherein each rhombus further comprises two second included angles opposite to each other, a length of an imaginary interconnecting the vertexes of the two first included angles being larger than that of an imaginary diagonal line interconnecting vertexes of the two second included angles. 
     
     
         12 . The heat pipe of  claim 11 , further comprising another grid wick structure with squares, wherein the another grid wick structure with squares and the grid wick structure with rhombuses are stacked one on the other. 
     
     
         13 . The heat pipe of  claim 12 , wherein one of the sidelines of each square overlaps the imaginary line interconnecting the two second included angles of a corresponding one of the rhombuses. 
     
     
         14 . The heat pipe of  claim 10 , wherein an imaginary line interconnecting the two first included angles of each rhombus is substantially parallel to a longitudinal direction of the tube from the evaporation section to the condenser section. 
     
     
         15 . The heat pipe of  claim 10 , wherein the wick structure is formed by weaving wires, and a diameter of each of the wires is in a range of from 0.03 millimeters to 0.05 millimeters. 
     
     
         16 . The heat pipe of  claim 10 , wherein the first included angle is smaller than 45 degrees. 
     
     
         17 . The heat pipe of  claim 10 , wherein the heat pipe is a flat heat pipe, and a thickness of the tube from one flat side of the heat pipe to the other flat side of the heat pipe is smaller than 1.5 millimeters. 
     
     
         18 . The heat pipe of  claim 10 , wherein a length of the sideline of each rhombus is in the range of from 0.10 millimeters to 0.25 millimeters.