Patent ID: 6227287
Filing Date: 2001-05-08
Classification: F28D,H01L

Abstract:
A cooling apparatus for boiling and condensing refrigerant, comprising:a tank for containing refrigerant therein, the tank having a heating body mounting portion to mount a heating body thereon, a heat-receiving wall, a radiation wall, and a vapor passage through which a vapor refrigerant flows;a wick disposed in the tank for transporting the refrigerant to an adjacent portion adjacent to the heating body mounting portion by capillary action; andcondensation fins disposed in the tank that thermally connect to at least the radiation wall,wherein a fin pitch of the condensation fins is set to be equal or less than a maximum value that can secure a necessary condensation area and is set to be equal to or more than an average bubble radius of bubbles of the refrigerant released from an inner surface of the tank as a result of boiling, anda length of each of the condensation fin is set as shorter closer to the vapor passage.