Patent ID: 8118083

Claim:
A cooling apparatus comprising: a tank for keeping a coolant liquid and an air layer therein; a heat receiver in contact with a heat generating part for receiving heat therefrom; a radiator for radiating the heat absorbed by the coolant liquid; and a circulating mechanism for circulating the coolant liquid from said heat receiver through said tank, through said radiator and again to said heat receiver, wherein said radiator comprises a coolant liquid circulating conduit, said coolant liquid circulating conduit including a portion passing through said tank, wherein said tank is mounted on said radiator, wherein said coolant liquid circulating conduit comprises a width narrower at a middle section of said portion of the coolant liquid circulating conduit than a width of another portion of said coolant liquid circulating conduit, said coolant liquid circulating conduit being divided by a gap at said middle section, and wherein said radiator includes cavities on both sides of the gap in said coolant liquid circulating conduit, each of said cavities comprising an area covered with said tank mounted on said radiator.