Heat exchanger and method for manufacturing

Details Heat exchanger and method for manufacturing Heat exchanger and method for manufacturing

1990-10-05

1992-04-21

Rivell, John

Heat exchange

Radiator core type

Serially connected tube sections

165178, 29890043, 2281734, 2853824, F28D 1047, B21D 3906

Patent

active

051058774

ABSTRACT:
A heat exchanger includes a serpentine tube, a plurality of fins provided on the sides of the tube, and unions into which the respective end portions of the tube are inserted and to which the end portions are brazed. An expanded portion is formed on the tip of each inserted end portion of the tube, and a corresponding engaging portion is provided in each union. The expanded portion is engaged with the engaging portion of the union. Since the end portion of the tube is temporarily fixed to the union by the engagement of the expanded portion with the engaging portion, it is possible to simultaneously braze the tube to the union, and the tube to the fins, in a furnace. The manufacturing process of the heat exchanger can be simplified, the efficiency of the brazing process is increased, and the quality of the brazed portion is consistently high.

REFERENCES:
patent: 2573161 (1951-10-01), Tadewald
patent: 2816739 (1957-12-01), Stoehr
patent: 2956334 (1960-10-01), Stewart
patent: 3047937 (1962-08-01), Vecchi
patent: 3972371 (1976-08-01), Plegat
patent: 4887853 (1989-12-01), Flowers et al.
patent: 4945983 (1990-08-01), Dalo

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