Shell- and tube-type heat exchangers and their production

Details Shell- and tube-type heat exchangers and their production Shell- and tube-type heat exchangers and their production

1986-05-19

1988-03-29

Davis, Jr., Albert W.

Heat exchange

Casing or tank enclosed conduit assembly

With distinct flow director in casing

165158, 165 82, 165 76, 285189, 2851371, F28F 922, F28F 906

Patent

active

047337222

ABSTRACT:
A casing for a shell- and tube-type heat exchanger is produced by deforming two axially spaced portions of a length of tubing to make their integral peripheries either larger than or smaller than the internal periphery of an intermediate portion of the casing which is interposed between the end portions. A tubestack comprising tube elements supported by tubeplates is received within the casing, with the tubeplates being disposed at least partially within the end portions respectively. In the case where the natural bore of the tubing (which forms the internal periphery of the intermediate casing portion) is accurately sized and one of the end portions has a larger internal periphery than said bore, transverse baffles of the tubestack can have external peripheries which are accurately sized to engage the internal periphery of the intermediate casing portion. Otherwise, the baffles can have flexible tires mounted on their peripheries to engage the internal periphery of the intermediate casing portion. Where the internal bore of the tubing is subject to known dimensional tolerances such that it has a maximum and a minimum possible size, the end portions of the casing are deformed so that their internal peripheries are either larger than said maximum possible bore size or smaller than said minimum possible bore size.

REFERENCES:
patent: 2101167 (1937-12-01), De Baufre
patent: 2469315 (1949-05-01), Shaw
patent: 2595822 (1952-05-01), Uggerby
patent: 2941787 (1960-06-01), Ramen
patent: 3151674 (1964-10-01), Heller et al.
patent: 3228456 (1966-01-01), Brown et al.
patent: 3732922 (1973-05-01), Pouderoux
patent: 3812907 (1974-05-01), Linning
patent: 4157114 (1979-06-01), De Lorenzo
patent: 4207944 (1980-06-01), Holtz et al.
patent: 4249593 (1981-02-01), Bieberbach et al.
patent: 4415020 (1983-11-01), Daugirda

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