Patent ID: 7775262

Claim:
A heat exchange device for removing heat from a heat-generating component, comprising: an evaporator comprising a top cover and a bottom cover, the top and bottom covers cooperating with each other to define a chamber inside the evaporator, the chamber having a liquid micro-channel region and an adjacent evaporating region, a protrusion being formed on an outer surface of the bottom cover of the evaporator and being located corresponding to a substantially middle portion of the evaporating region of the chamber for contacting said heat-generating component, the liquid micro-channel region being fully filled with a first wick structure, the middle portion of the evaporating region being filled with a second wick structure, the second wick structure being connected to the first wick structure and substantially covering the protrusion of the bottom cover of the evaporator, a remaining part of the evaporating region not filled with the second wick structure being provided as a vapor-gathering sub-region, a working fluid being filled in the chamber, the working fluid turning into vapor in the evaporating region of the evaporator upon receiving heat from said heat-generating component, the generated vapor being accommodated in the vapor-gathering sub-region; a condenser including a first housing member, a plurality of tube members being in fluid communication with the first housing member, and a fin member maintained in thermal contact with the tube members; and a vapor conduit and a liquid conduit each being connected between the evaporator and the condenser, the vapor conduit being connected to and communicating with the vapor-gathering sub-region to convey the vapor generated in the evaporator to the tube members of the condenser, the vapor turning into condensate in the tube members upon releasing the heat to the fin member, the liquid conduit being connected to and communicating with the liquid micro-channel region to convey the condensate back to the evaporator.