Patent ID: 7753662
Filing Date: 2010-07-13
Classification: F04D

Abstract:
1. A liquid cooling device, comprising: a casing defining a first chamber, a second chamber, and a third chamber, the third chamber communicating with the first chamber, an inlet and an outlet being formed on the casing, the first and the third chambers cooperatively forming a work channel for liquid; an impeller rotatably mounted in the first chamber to circulate the liquid, a magnet attached to the impeller; a heat-absorbing member being mounted in the third chamber, adapted for absorbing heat from a heat-generating electronic component, the heat-absorbing member defining a plurality of channels therein communicating with the third chamber; a mask located between the impeller and the hear-absorbing member; a filter mounted in the second chamber and received in the mask, the filter having a flank located corresponding to the inlet, the filter defining a plurality of orifices to provide an escape of air bubbles mixed in the liquid for preventing the air bubbles from entering the work channel with the liquid; and a motor driving unit interacting with the magnet attached on the impeller to drive the impeller to rotate; wherein when the impeller rotates, first the liquid enters the second chamber via the inlet, and then the liquid flows through the filter in which the air bubbles in the liquid leave the liquid and escape from the filter via the orifices defined in the filter to enter a room defined by a portion of the second chamber, and then the liquid, after being deaerated, flows into the work channel and finally is driven to flow out of the liquid cooling device via the outlet.