Spiral heat exchanger

Heat exchange – Casing or tank enclosed conduit assembly – Conduit coiled within casing

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Details

165164, F28D 904

Patent

active

045468265

ABSTRACT:
A spiral heat exchanger includes a vessel, a plurality of concentric sheet metal spirals situated in the vessel and defining first and second spiral flow channels for respective first and second fluids for effecting a heat exchange therebetween; first and second closure plates extending perpendicularly to the vessel axis and covering the spirals at opposite spiral edges thereof; and mounting bars pressing the closure plates against axially opposite edges of the spirals. The first closure plate defines a first axially oriented opening and the second closure plate defines a second axially oriented opening providing, in the first flow channel, an inlet and an outlet for the first fluid. The vessel comprises a cylindrical vessel shell entirely surrounding the spirals. The first closure plate has a radially outer circumferential edge surrounded by the first axially oriented opening and the second closure plate has a radially inner circumferential edge surrounding the second axially oriented opening, whereby the first axially oriented opening communicates with a radially outer part and the second axially oriented opening communicates with a radially inner part of the first flow channel.

REFERENCES:
patent: 2129300 (1938-09-01), Bichowsky
patent: 2131265 (1938-09-01), Bichowsky
patent: 2136153 (1938-11-01), Rosenblad
patent: 2360739 (1944-10-01), Strom
patent: 2663549 (1953-12-01), Otten
patent: 3762467 (1973-10-01), Poon et al.
patent: 3921713 (1975-11-01), Schnitzer et al.

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