Cooler

Abstract

A cooler is provided with a thermal transmission member having a surface to be sprayed with a cooling fluid. The heat transmission member includes a first groove formed on the surface, and a second groove intersecting with the first groove and being formed on the surface.

1 . A cooler comprising:
 a thermal transmission member having a surface to be sprayed with a cooling fluid, wherein   said thermal transmission member includes:   a first channel formed on said surface;   a second channel intersecting with said first channel ( 1   a - 5   a ), the second channel being formed on said surface,   said first channel is formed to extend from one end surface of said thermal transmission member to another end surface,   said second channel is formed so that ends of said second channel are arranged in an area inside a main surface of said thermal transmission member,   each of said first channel and said second channel are formed into a groove shape so that said first and second channels have bottom surfaces respectively, and   the bottom surface of said second channel is formed to be lower than the bottom surface of said first channel.   
   
   
       2 . The cooler according to  claim 1 , wherein
 said first channel is formed to supply said cooling fluid to a substantially entire part of said surface,   said first channel is formed to discharge an excessive amount of said cooling fluid, and   said second channel is formed to facilitate evaporation of said cooling fluid.   
   
   
       3 . The cooler according to  claim 1 , wherein
 in said second channel, a section perpendicular to an extending direction of said second channel is formed into a stepwise shape.   
   
   
       4 . The cooler according to  claim 1 , wherein in said thermal transmission member, said surface is formed into a convex surface so that a height is gradually reduced from a center part to an outer peripheral part. 
   
   
       5 . The cooler according to  claim 1 , wherein in said thermal transmission member, said surface is inclined so that a height is gradually reduced from a center part to an outer peripheral part. 
   
   
       6 . The cooler according to  claim 1 , wherein each of said first channel and said second channel is formed into a groove shape, and
 at least one channel of said first channel and said second channel is formed to be gradually deepened from a center part to an outer peripheral part of said surface.   
   
   
       7 . The cooler according to  claim 1 , wherein
 said second channel is formed into a groove shape, and   said second channel is formed so that at least a part of said second channel generates a capillary phenomenon.   
   
   
       8 . (canceled)