Method of making a heat exchanger

Details Method of making a heat exchanger Method of making a heat exchanger

1994-06-06

1995-04-04

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29413, B23P 1526

Patent

active

054025710

ABSTRACT:
A method of making a heat exchanger including header pipes, flat tubes extending between the header pipes and fin units extending between the flat tubes. The header pipes include a plurality of holes on one side thereof for accepting the flat tubes. On the opposite side of the header pipes is at least one slit in which a partition plate is inserted. During the formation of the header pipe, a pair of projections are formed on the ends of the slit. After the partition plate is inserted into the header pipe, the projections are bent until they engage the partition plate thereby fixedly securing the partition plate within the header pipe.

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patent: 5243842 (1993-09-01), Kobayashi et al.
patent: 5259449 (1993-11-01), Case
patent: 5343620 (1994-09-01), Velluet

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