Method for manufacturing a heat exchanger

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

1990-11-13

1992-02-18

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29890052, 29890054, B23P 1526

Patent

active

050881930

ABSTRACT:
A heat exchanger includes a pair of headers, a plurality of flattened oval heat exchange tubes, and a plurality of fins positioned between the headers over the length of the heat exchange tubes. The tubes are connected to the headers through a plurality of elongated holes in the header that have tapered lips. The lip taper forms an annular depression around the tube upon insertion that provides a good structural integrity. The connector holes are formed in each of the headers by a pressing method that eliminates header warping and produces dimensionally accurate hole shapes.

REFERENCES:
patent: 3307622 (1967-03-01), Oddy
patent: 3540529 (1970-11-01), Umino et al.
patent: 3689972 (1972-09-01), Mosier et al.
patent: 3993126 (1976-11-01), Taylor
patent: 4234041 (1980-11-01), Melnyk
patent: 4569390 (1986-02-01), Knowlton et al.
patent: 4615385 (1986-10-01), Saperstein et al.
patent: 4730669 (1988-03-01), Beasley et al.
patent: 4749033 (1988-06-01), Clausen

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