Patent ID: 7509995
Filing Date: 2009-03-31
Classification: F28D,F28F

Abstract:
1. A heat dissipation element for cooling an electronic device, said heat dissipation element comprising: a bottom surface for mounting thereto an electronic device to be cooled; a top surface defining a heat dissipation area for dissipating heat from the electronic device; and a plurality of heat transfer fins projecting upwardly from said top surface and being coextensive with said heat dissipation area; wherein each of said heat transfer fins defining a plurality of steps having a rise and a run and each of said steps extending across said heat dissipation area for maximizing an amount of heat to be dissipated from the electronic device; and wherein said heat transfer fins have arcuate sides, wherein said arcuate sides have a radius, R, defined by the thermal conductivity, k, of said heat transfer fins and the heat transfer coefficient, h, of said working fluid by the relation