Cross-current type plate heat exchanger

Heat exchange – Gradated heat transfer structure

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Details

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.

REFERENCES:
patent: 2596642 (1952-05-01), Boestad
patent: 3016921 (1962-01-01), Tadewald
patent: 3255816 (1966-06-01), Rosenblad
patent: 3473604 (1969-10-01), Tiefenbacher
patent: 3554273 (1971-01-01), Kritzler
patent: 3757856 (1973-09-01), Kun
patent: 3931854 (1976-01-01), Ivakhnenko
patent: 3967354 (1976-07-01), Jaspers
patent: 4099928 (1978-07-01), Norback
patent: 4180129 (1979-12-01), Sumitomo
patent: 4182411 (1980-01-01), Sumitomo et al.

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