Patent ID: 6119767
Filing Date: 2000-09-19
Classification: F28D,F28F,H05K

Abstract:
A cooling apparatus for cooling an external high temperature medium by using boiling and condensing refrigerant comprising:a refrigerant tank for storing a refrigerant which is boiled and vaporized by receiving heat from a high temperature portion of said cooling apparatus;a communication pipe, one side of which communicates with said refrigerant tank, another side of said pipe extending toward a low temperature portion of said cooling apparatus, a temperature of said low temperature portion being lower than that of said high temperature portion;a radiator communicating with said another side of said communication pipe and disposed above said refrigerant tank for radiating heat of the refrigerant boiled and vaporized in said refrigerant tank to said low temperature portion to condense and liquefy said refrigerant; andheat conduction suppressing means for suppressing heat conduction between said communication pipe and at least one of said refrigerant tank, said radiator, said high temperature portion and said low temperature portion, whereinsaid refrigerant tank includes a plurality of heat absorbing pipes disposed substantially in parallel to each other, a heat absorbing side lower communication portion disposed below said plurality of heat absorbing pipes and communicating with said plurality of heat absorbing pipes, and a heat absorbing side upper communication portion disposed above said plurality of heat absorbing pipes and communicating with said plurality of heat absorbing pipes,said communication pipe includes a high temperature side communication pipe for introducing the refrigerant boiled and vaporized in said refrigerant tank to said radiator, and a low temperature side communication pipe for returning the refrigerant condensed and liquefied in said radiator to said refrigerant tank,said radiator includes a plurality of radiating pipes disposed substantially in parallel to each other, a radiating side lower communication portion disposed below said plurality of radiating pipes and communicating with said plurality of radiating pipes, and a radiating side upper communication portion disposed above said plurality of radiating pipes and communicating with said plurality of radiating pipes,said high temperature side communication pipe is disposed substantially in parallel to said radiating pipe and communicating with said heat absorbing side upper communication portion and said radiating side upper communication portion,said low temperature side communication pipe is disposed substantially in parallel to said heat absorbing pipe and communicating with said heat absorbing side lower communication portion and said radiating side lower communication portion, andsaid heat conduction suppressing means includes a refrigerant tank side heat insulating member disposed between said refrigerant tank and said low temperature side communication pipe, and formed of a heat insulating material to suppress heat conduction from said refrigerant tank to said low temperature side communication pipe, and a radiator side heat insulating member disposed between said radiator and said high temperature side communication pipe, and formed of a heat insulating material to suppress heat conduction from said high temperature side communication pipe to said radiator.