Method of making folded, bent and re-expanded heat exchanger tub

Details Method of making folded, bent and re-expanded heat exchanger tub Method of making folded, bent and re-expanded heat exchanger tub

1995-12-13

1998-01-06

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29890047, 165150, B23P 1526

Patent

active

057041237

ABSTRACT:
A heat exchanger assembly of the side-entry type includes at least one fin set and an elongated heat exchanger tube having a collapsed sidewall extending substantially the length of the tube which permits the bending of the elongated heat exchanger tube at the return bend portions and permits expansion of the elongated tube to engage the fin set. Method and apparatus for making the elongated heat exchanger tube having the collapsed sidewall substantially extending the length of the tube as well as methods of making heat exchanger assemblies.

REFERENCES:
patent: 2689596 (1954-09-01), Huet
patent: 3780799 (1973-12-01), Pasternak
patent: 3796258 (1974-03-01), Malhotra et al.
patent: 4031745 (1977-06-01), McCarty
patent: 4365667 (1982-12-01), Hatada et al.
patent: 4778004 (1988-10-01), Paulman et al.
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patent: 4970770 (1990-11-01), Jansson et al.
patent: 5154679 (1992-10-01), Fuller et al.
patent: 5228198 (1993-07-01), Paulman et al.
patent: 5535820 (1996-07-01), Beagle et al.

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