Patent ID: 8196645

Claim:
A heat sink for dissipating heat from an electronic component, the heat sink comprising: a planar upper plate; a planar lower plate secured on the upper plate; and a plurality of heat pipes sandwiched between the upper plate and the lower plate, wherein the plurality of heat pipes comprises an S-shaped middle heat pipe, a U-shaped first heat pipe and a U-shaped second heat pipe, the middle heat pipe comprising a middle evaporating section, and a first condensing section and a second condensing section parallel to the middle evaporating section and arranged at two opposite lateral sides of the middle evaporating section, the first heat pipe being entirely arranged between the middle evaporating section and the first condensing section of the middle heat pipe, the second heat pipe being entirely arranged between the middle evaporating section and the second condensing section of the middle heat pipe; wherein the first heat pipe comprises a first evaporating section directly contacting the middle evaporating section of the middle heat pipe, a third condensing section directly contacting the first condensing section of the middle heat pipe, and a connecting section interconnecting the first evaporating section and the third condensing section, and wherein the second heat pipe comprises a second evaporating section directly contacting the middle evaporating section of the middle heat pipe, a fourth condensing section directly contacting the second condensing section of the middle heat pipe, and a connecting section interconnecting the second evaporating section and the fourth condensing section.