Patent ID: 6360814
Filing Date: 2002-03-26
Classification: F28D,H01L,H05K

Abstract:
A cooling device boiling and condensing refrigerant, for cooling a heat-generating member, said cooling device comprising:a refrigerant tank for defining a refrigerant chamber in which liquid refrigerant is stored and a part of liquid refrigerant is boiled and vaporized by absorbing heat from the heat-generating member through a boiling surface of said refrigerant tank, said refrigerant tank having a first wall part onto which the heat-generating member is attached, and a second wall part opposite to said first wall part; and a radiator disposed on said second wall part of said refrigerant tank to perform a heat exchange between gas refrigerant from said refrigerant tank and outside fluid passing through said radiator, wherein: said radiator includes a first radiator portion for performing heat exchange between gas refrigerant from said refrigerant tank and outside fluid passing through said first radiator portion, and a second radiator portion for performing heat exchange between refrigerant from said first radiator portion and outside fluid passing through said second radiator portion, said second radiator portion being disposed at a lower side of said first radiator portion, the cooling device further comprising: a duct extending in the up-down direction, for defining an outside fluid passage through which outside fluid passes through both said first radiator portion and said second radiator portion in the up-down direction, said duct being disposed to enclose both said first radiator portion and said second radiator portion, wherein: one upstream radiator portion among said first radiator portion and said second radiator portion, disposed at an upstream side relative to a flow direction of outside fluid, is disposed to be separated from an inner surface of said duct so that a clearance is defined between said inner surface of said duct and side upstream radiator portion.