Patent ID: 8929073
Filing Date: 2015-01-06
Classification: F25B,F28D,F28F,H01L,H05K

Abstract:
1. A boiling refrigerant type cooling system comprising: a heat reception jacket, thermally attached to a heat generating body provided on a circuit board, that vaporizes a liquid refrigerant contained inside by heat generation from the heat generating body; a condenser that receives refrigerant steam from the heat reception jacket and transmits heat to the outside so as to condense the refrigerant steam to the liquid refrigerant; a first pipe that conducts the refrigerant steam from the heat reception jacket to the condenser; and a second pipe that conducts the liquid refrigerant from the condenser to the heat reception jacket, wherein the heat reception jacket has a structure in which a metal base in thermal contact with the heat generating body and a metal cover to contain the liquid refrigerant inside are brazed, wherein the base has a boiling heat transfer unit on the side in contact with the liquid refrigerant, and wherein the boiling heat transfer unit has a plurality of parallel tunnels communicating with the outside via holes or gaps under a surface, a groove deeper than a tunnel diameter formed through all the tunnels in an orthogonal direction to the tunnels, and a cover plate on the groove.