Method for making a tube for a heat exchanger

Details Method for making a tube for a heat exchanger Method for making a tube for a heat exchanger

1992-05-13

1993-06-01

Flanigan, Allen J.

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

72367, 165173, 29890043, B21D 4100

Patent

active

052148483

ABSTRACT:
A heat exchanger such as an engine cooling radiator for a motor vehicle has a tube bundle comprising a multiplicity of parallel heat exchange tubes arranged in at least one range, with each tube having a body terminating in an end portion which is received in a through hole formed in a header plate of the heat exchanger. The transverse cross section of the end portion of each tube has a perimeter which is smaller than that of the transverse cross section of the body of the tube. The value of the pitch between adjacent tubes may thus be optimized, while at the same time the size of the heat exchanger is reduced.

REFERENCES:
patent: 3922768 (1975-12-01), Takayasu
patent: 3977227 (1976-08-01), Noble
patent: 4028037 (1977-06-01), Dawson
patent: 4456059 (1984-06-01), Cadars
patent: 4476704 (1984-10-01), Hage et al.
patent: 4546824 (1985-10-01), Melnyk
patent: 4580324 (1986-04-01), Laska
patent: 5046348 (1991-09-01), Pratt

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