Patent ID: 7299861

Claim:
A water-cooling heat-dissipating device, comprising: a heat exchanger comprising a pump, a plurality of primary water paths and a plurality of auxiliary water paths, wherein the pump has an outlet pipe and an inlet pipe, the primary water paths are formed with an inlet and an outlet, the inlet is connected to the outlet pipe of the pump, the outlet is connected to the inlet pipe of the pump, the plurality of auxiliary water paths are formed between each primary water path, each auxiliary water path is separately arranged with an interval thereabout, and a plurality of heat-dissipating fins are formed in the interval; and a heat-absorbing element provided underneath the pump of the heat exchanger, wherein a water path is formed between the heat-absorbing element and the pump for a fluid passing through, the water path is in communication with the outlet pipe and the inlet pipe, thereby to form a circulating route for the fluid passing through.