Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Patent
1997-09-24
1999-05-04
Cuda, I.
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
29890036, 29890045, B23P 1526
Patent
active
058989951
ABSTRACT:
A composite heat exchanger has an inner, serpentine circuit fluidly isolated from a surrounding outer, parallel flow circuit, allowing two different heat exchange media to be in thermal contact without physical mixing. A series of longer, inner tubes are bent into a U shape, with the parallel legs of each arm of the U jacketed by surrounding, outer tubes. Header plates are inserted over the outer tubes, moved to a spaced apart relation, and then all but the first and last inner tube ends are joined by separate U shaped junctions to created the primary, serpentine circuit. Finally, manifold tanks are attached to the header plates, covering, but fluidly isolated from, the U shaped junctions of the serpentine circuit. Corrugated fins are installed between the parallel surfaces of adjacent outer tubes.
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patent: 5419392 (1995-05-01), Maruyama
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Cuda I.
General Motors Corporation
Griffin Patrick M.
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