Patent ID: 7173823
Filing Date: 2007-02-06
Classification: F28D,F28F,H05K

Abstract:
1. A heat producing, fluid cooled assembly, comprising: (a) a housing made of liquid-impermeable material and defining a fluid inlet and a fluid outlet and a plurality of openings; (b) a plurality of electrical packages, each having a first major surface and a second major surface and wherein said first major surface supports a set of semiconductor electrical devices and said second major surface is a heat sink adapted to express heat generated from said electrical package and wherein said second major surface defines a rim that is fit to a said opening; (c) said housing being constructed so that as fluid travels from said fluid inlet to said fluid outlet it is constrained to flow past each one of said openings thereby placing each said heat sink in contact with said fluid; and (d) wherein said housing and said electrical packages together form at least one flow volume having fluid entry port and wherein said second major surface includes a set of first protrusions and a set of second protrusions, which are further from said fluid entry port than said first protrusions and wherein said first protrusions are thinner than said second protrusions.