Forced fluid heat sink

A heat exchanger for cooling a heat generating device comprising:

• a housing including a lid, a peripheral wall formed of a discrete member separate from said lid, and a bottom wall formed of a discrete member separate from said lid, arranged so as to define an enclosure, wherein a pair of spaced apart openings are defined through a portion of said peripheral wall so that a first of said openings forms an entrance to a first manifold and a second of said openings forms an exit from a second manifold;
• a plurality of spaced-apart, discrete parallel plates that are positioned upon said bottom wall and in spaced relation to said peripheral wall, with a space defined between adjacent ones of said plates, wherein said plates are arranged so as to be in parallel relation to said portion of said peripheral wall defining said openings such that said entrance to said first manifold and said exit from said second manifold are located in the portion of said peripheral wall that extends parallel to said spaced-apart plates, and in transverse relation to said first and said second manifolds so that each space defined between said adjacent ones of said plates is in fluid communication with said first and second manifolds;
• and
• a fin core positioned within each space defined between said adjacent ones of said plates so as to reduce the hydraulic cross-section of each said space such that when a coolant enters said housing through said first opening so as to fill said first manifold, a pressure builds within said first manifold causing said coolant to flow transversely past each of said fin cores and thereby to fill said second manifold.