Thermal conductor with ultra-thin flat wick structure

Abstract

A thermal conductor with an ultra-thin flat wick structure ( 2 ) includes a hollow shell ( 1 ) having a flat shape, and a wick structure ( 2 ) disposed in the shell ( 1 ) and contacted with an inner wall ( 100 ) of the shell ( 1 ), wherein the wick structure ( 2 ) is a thin planar body having a plane ( 20 ) and a pressing surface ( 21 ) opposite to the plane ( 20 ), wherein the plane ( 20 ) is attached to the inner wall ( 100 ) of the shell ( 1 ), wherein a plurality of elongated concave surfaces ( 210 ) are spacedly arranged on the pressing surface ( 21 ) such that a steam channel ( 101 ) is formed in the shell ( 1 ) via each of the concave surfaces ( 210 ) and an elongated wick structure connection ( 200 ) is formed between each concave surface ( 210 ) and the plane ( 20 ).

What is claimed is: 
     
         1 . A thermal conductor with an ultra-thin flat wick structure ( 2 ), comprising:
 a hollow shell ( 1 ) having a flat shape; and   a wick structure ( 2 ) disposed in the shell ( 1 ) and contacted with an inner wall ( 100 ) of the shell ( 2 ),   wherein the wick structure ( 2 ) is a thin planar body having a plane ( 20 ) and a pressing surface ( 21 ) opposite to the plane ( 20 ), wherein the plane ( 20 ) is attached to the inner wall ( 100 ) of the shell ( 1 ), wherein a plurality of elongated concave surfaces ( 210 ) are spacedly arranged on the pressing surface ( 21 ) such that a respective steam channel ( 101 ) is formed in the shell ( 1 ) via each of the concave surfaces ( 210 ) and a respective elongated wick structure connection ( 200 ) is formed between each concave surface ( 210 ) and the plane ( 20 ).   
     
     
         2 . The thermal conductor according to  claim 1 , wherein the shell ( 1 ) further comprises another wick structure ( 2 ) such that the two wick structures ( 2 ) are stacked up and down with respective concave surfaces ( 210 ) facing to each other to form the steam channel ( 101 ). 
     
     
         3 . The thermal conductor according to  claim 1 , wherein an external contour of the shell ( 1 ) has a thickness below 0.5 mm. 
     
     
         4 . The thermal conductor according to  claim 1 , wherein each concave surface ( 210 ) of the wick structure ( 2 ) has penetrated heat transfer holes ( 211 ). 
     
     
         5 . The thermal conductor according to  claim 1 , wherein a plurality of recesses ( 212 ) are recessed and disposed on each concave surface ( 210 ) to make the adjacent steam channels ( 101 ) communicate with each other. 
     
     
         6 . The thermal conductor according to  claim 1 , wherein each concave surface ( 210 ) of the wick structure ( 2 ) has a shape of an “V”, an arc, a rectangle, or a trapezoid. 
     
     
         7 . The thermal conductor according to  claim 1 , wherein each concave surface ( 210 ) gradually expands or shrinks along a longitudinal direction of the wick structure ( 2 ). 
     
     
         8 . The thermal conductor according to  claim 1 , wherein each concave surface ( 210 ) is extended and disposed along a longitudinal direction of the wick structure ( 2 ). 
     
     
         9 . The thermal conductor according to  claim 1 , wherein a thickness of the wick structure ( 2 ) is below 0.25 mm. 
     
     
         10 . The thermal conductor according to  claim 9 , wherein a minimum thickness of the respective elongated wick structure connection ( 200 ) ranges from 0.02 mm to 0.04 mm. 
     
     
         11 . The thermal conductor according to  claim 10 , wherein the shell ( 1 ) has an upper wall ( 10 ), a lower wall ( 11 ) spaced with and opposite to the upper wall ( 10 ), and side edges ( 12 ) surrounding the outer edges of the upper wall ( 10 ) and the lower wall ( 11 ). 
     
     
         12 . The thermal conductor according to  claim 11 , wherein the wick structure ( 2 ) is braid, fiber, sintered metal powder, or any combination thereof