Forced fluid heat sink
View Patent ↗A heat exchanger for cooling a heat generating device is provided that includes a plurality of plates each defining at least one through-bore. The plates are laminated together to form a stack so that a plurality of enclosed chambers are formed by an alignment of a first portion of the through-bores within the block, and a plurality of passageways are formed by an alignment of a second portion of the through-bores within the stack such that at least one of the passageways is arranged in fluid communication with at least two of the chambers. A baffle-plate is disposed within a portion of the stack so as to form a chamber boundary and thereby to define a circuitous fluid flow path between the chambers through the at least one passageway. A fluid entrance port is defined in a first outer one of the plates and arranged in fluid communication with one of the chambers, and a fluid exit port is also defined in a second outer one of the plates and arranged in fluid communication with another one of the chambers.
1. 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.
2. A heat exchanger according to claim 1 wherein said plurality of spaced-apart, parallel plates project outwardly from said bottom wall.
3. A heat exchanger according to claim 2 wherein said first manifold and said second manifold are defined between end edge portions of said parallel plates and internal portions of said peripheral wall.
4. A pumped thermal management system comprising:
an evaporator including 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 and including a plurality of spaced-apart discrete, parallel plates positioned within said housing in transverse relation to said first and second manifolds 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, wherein each adjacent pair of said spaced-apart plates has a fin core positioned therebetween so as to reduce the hydraulic cross-section of each of said spaces 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;
at least one condenser; and
at least one pump arranged along a fluid conduit that communicates between said evaporator and said condenser.