Method for manufacturing a heat exchanger

Details Method for manufacturing a heat exchanger Method for manufacturing a heat exchanger

1991-12-16

1993-06-01

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29890052, B21D 5302

Patent

active

052148475

ABSTRACT:
A method of manufacturing a heat exchanger includes a pair of tubular header pipes having a plurality of connection holes for heat exchanger tubes extended between the header pipes. A plurality of opposite corresponding cut portions are formed on both ends of a plate. The plate is bent into an almost tubular shape. The heat exchanger tubes are inserted into the opposite cut portions. The plate is further bent into a complete tubular shape, with the opposite cut portions forming completed connection holes. Thus, the connection holes are formed at desired positions of the heat exchanger and simultaneously, the tubes can be precisely and securely connected to the header pipes.

REFERENCES:
patent: 1583758 (1926-05-01), White
patent: 1729180 (1929-09-01), Murray
patent: 2262627 (1941-11-01), Whitesell
patent: 3246691 (1966-04-01), Porte et al.
patent: 3866675 (1975-02-01), Bardon et al.
patent: 4382468 (1983-05-01), Hastwell
patent: 4620590 (1986-11-01), Koisuka et al.
patent: 4945635 (1990-08-01), Nobusue et al.
patent: 4969512 (1990-11-01), Hisao et al.

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