Ebullient cooling device

Abstract

An ebullient cooling device having a simple structure and capable of limiting the bubbles to an appropriate volume. The ebullient cooling device for cooling a heat generating element is provided with a plurality of vertically arranged cooling channels comprising a lower channel ( 2 ), a middle channel ( 3 ) and un upper channel ( 4 ). Each cooling channel has cooling fins ( 12 ) for guiding a refrigerant to flow in a vertical direction, and a vapor discharge path ( 16 ) formed at the side of the cooling fins ( 12 ) that is opposite the side in contact with the heat generating element. Furthermore, flow path partition/vapor discharge guiding plates ( 18 ) are provided between the cooling channels so that the bubbles that have been generated are guided to the vapor discharge path ( 16 ) and prevented from moving into the subsequent cooling channel.

1 . An ebullient cooling device for cooling a heating body, comprising:
 at least first and second cooling channel blocks, both arranged in a vertical direction, comprising:
 a cooling fin that causes coolant to flow in the vertical direction; 
 a vapor discharge path formed on a side of the cooling fin that is opposite to a side in contact with a heating body; 
 a partition positioned between the cooling fin and the vapor discharge path; and 
 an opening portion provided at the partition, between the first and second cooling channel blocks; 
   a guiding portion provided between the first and second cooling channel blocks, the guiding portion formed as a portion of the partition to project from an edge of the opening portion towards the heating body contacting side of the cooling fin, and guiding a bubble generated in the first cooling channel block to the vapor discharge path by preventing the bubble from proceeding into the second cooling channel block; and   a fluid supply pipe provided between the first and second cooling channel blocks for supplying the coolant to the second cooling channel block,   wherein a front edge of the guiding portion contacts with the fluid supply pipe.   
     
     
         2 . The ebullient cooling device according to  claim 1 , wherein
 the guiding portion is formed, from the cooling fin of the second cooling channel block, to be tilted towards the cooling fin of the first cooling channel block.   
     
     
         3 - 5 . (canceled)