Patent ID: 6820684
Filing Date: 2004-11-23
Classification: F28D,F28F,H01L

Abstract:
A cooling system comprising:a thermal spreader having an inner chamber at least partially filled with a liquid; a phase separator disposed within the thermal spreader and at least partially dividing the inner chamber into a boiling section and a condensing section, and a vapor expansion section disposed within the inner chamber of the thermal spreader, wherein the phase separator and the vapor expansion section allow vapor and liquid to circulate between the boiling section and the condensing section; a heat extraction assembly disposed at least partially within the vapor expansion section and within the condensing section of the inner chamber, wherein the heat extraction assembly extracts heat from the vapor expansion section to facilitate condensing of vapor within the inner chamber to liquid and extracts heat from liquid within the condensing section to further cool the liquid before the liquid circulates to the boiling section; and wherein when the thermal spreader of the cooling system is coupled to a heat generating component with the boiling section thereof disposed adjacent to the heat generating component, liquid within the thermal spreader boils in the boiling section, producing vapor which leaves the boiling section and causes liquid to flow into the boiling section from the condensing section, thereby providing circulatory vapor and liquid flow between the boiling section and the condensing section and facilitating removal of heat from the heat generating component.