Patent ID: 7407000

Claim:
A liquid cooling device comprising: a heat-absorbing unit for thermally contacting with a heat generating electronic component; a heat-dissipating body defining an air flow passage therein, the heat-dissipating body comprising a plurality of spaced heat-dissipating fins and bottom and top conduct plates deposited on top and bottom of the spaced heat-dissipating fins; a fan mounted to the heat dissipating body for forming a forced air flow flowing through the air flow passage; a liquid coolant circulation loop comprising a base attached to a bottom of the heat-dissipating body and combining with the bottom conduct plate of the heat-dissipating body, a cover attached to a top of the heat-dissipating body and combining with the top conduct plate of the heat-dissipating body, and a tank beside the heat-dissipating body and communicating with the base and the cover, the base and the cover respectively define a first groove and a second groove, and bottom and top of the tank being respectively communicated with the first groove and the second groove of the base and the cover; a pair of pipes connecting the tank of the circulation loop to the heat-absorbing unit for liquid flowing between the circulation loop and the heat-absorbing unit; and a pump arranged in the loop to drive a circulation of liquid in the liquid cooling device from the heat-absorbing unit to the circulation loop and back to the heat-absorbing unit, wherein the heat dissipating body, the fan and the circulation loop are built as a single unit.