Patent ID: 7269011
Filing Date: 2007-09-11
Classification: F28F,H01L,Y10S

Abstract:
1. A heat sink assembly for removing heat from an electronic device, said assembly comprising: a base having a top surface, a lid having a bottom surface in spaced relationship with and parallel to said top surface of said base, said lid defining an inlet opening on an inlet axis, an outer wall extending between said top surface of said base and said bottom surface of said lid and spiraling radially outwardly about said inlet axis from an inner exit position to an outer exit position to define a tangential outlet between said exit positions, a plurality of curved fins extending between said top surface of said base and said bottom surface of said lid and each presenting a concave surface and a convex surface extending from an inner circle with radius concentric with said inlet axis to an outer circle with radius concentric with said inlet axis to define a plurality of curved channels between adjacent fins for directing the flow of cooling fluid radially from said inlet axis, and each of said curved channels being disposed at a substantially constant distance between next adjacent fins for a major length there along from said inner circle with radius toward said outer circle with radius.