Heat exchange – Gradated heat transfer structure
Patent
1979-08-28
1981-09-29
O'Connor, Daniel J.
Heat exchange
Gradated heat transfer structure
165166, 165170, F28F 300
Patent
active
042917590
ABSTRACT:
A cross-current type plate heat exchanger comprising a plurality of vertically disposed heat transfer plates arranged side by side to define fluid passageways through which two fluids to be heat exchanged flow in a cross-current fashion. Each heat transfer plate is formed with a plurality of juxtaposed vertical grooves extending from the top to the bottom of the heat transfer surface of the heat transfer plate, and a plurality of substantially horizontal projections are formed between the vertical grooves to divide the heat transfer area into a plurality of sections. Vertically extending short projections which are lower than the vertical grooves are formed between the substantially horizontal projections in such a manner that the number of such short projections provided in the vertically separated sections is progressively increased so that the bottommost section has the greatest number of short projections. A labyrinth is defined in a space between a gasket and a seal member, and a gas having a higher pressure than any of the fluids to be heat exchanged is fed to the labyrinth.
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Hisaka Works Limited
O'Connor Daniel J.
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