Concentric tube heat exchanger with spacer

Details Concentric tube heat exchanger with spacer Concentric tube heat exchanger with spacer

1981-04-24

1983-07-12

Richter, Sheldon J.

Heat exchange

Non-communicating coaxial enclosures

F28D 710

Patent

active

043925260

ABSTRACT:
A heat exchanger for transferring heat from liquids or gases has an outer tube spaced from an concentric finned inner tube by a plurality of spacers. The spacers each have a tubular sleeve which engages the fins of the inner tube and a portion of the sleeve engages in the groove between adjacent fin turns of the inner tube. The outer surface of the spacer engages the internal surface of the outer tube. The spacer is preferably made of plastics material and the inner finned tube has fins formed in a threaded fashion. A preferred embodiment of the heat exchanger has a longitudinally slotted sleeve and the adjacent edges of the slot are formed to provide a snap-in engagement.

REFERENCES:
patent: 1704097 (1929-03-01), Mahleisen
patent: 2166808 (1939-07-01), Flindt
patent: 2241209 (1941-05-01), Lea
patent: 2272428 (1942-07-01), Pedersen
patent: 3036818 (1962-05-01), Legrand
patent: 3105708 (1963-10-01), Esty
patent: 3670811 (1972-06-01), Christensen
patent: 3791416 (1974-02-01), Ziemek et al.
patent: 3802491 (1974-04-01), Plank, Jr. et al.
patent: 3934645 (1976-01-01), Butts
patent: 3976129 (1976-08-01), Silver
patent: 4086959 (1978-05-01), Habdas
patent: 4250927 (1981-02-01), Newburg

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