Ebullient cooling device

Abstract

Provided is an ebullient cooling device that can prevent the freezing of liquid cooling medium, and which can inhibit the occurrence of burnout. An ebullient cooling device includes an accommodating unit in which a liquid cooling medium is accommodated, the liquid cooling medium receiving heat that results from a heating element and is an ebullient cooling device to be installed in vehicle, wherein the liquid cooling medium is a mixed liquid of water and ethanol, and the mixed liquid has an ethanol concentration of 40% by mass or more.

1 . An ebullient cooling device being characterized in that:
 it is an ebullient cooling device comprising:
 an accommodating unit in which a liquid cooling medium is accommodated, the liquid cooling medium receiving heat that results from a heating element; 
   it is an ebullient cooling device to be installed in vehicle;   said liquid cooling medium is a mixed liquid of water and ethanol; and   said mixed liquid has an ethanol concentration of 40% by mass or more.   
     
     
         2 . The ebullient cooling device as set forth in  claim 1  further comprising a condensing unit that lies successively to said accommodating unit, and which condenses said liquid cooling medium that has been boiled by means of the heat of said heating element; and
 said ebullient cooling device makes a sealed system. 
 
     
     
         3 . The ebullient cooling device as set forth in  claim 1 , wherein said mixed liquid has an ethanol concentration of from 45% by mass or more to 75% by mass or less. 
     
     
         4 . The ebullient cooling device as set forth in  claim 1 , wherein said mixed liquid has an ethanol concentration of from 45% by mass or more to 55% by mass or less.