method of welding heat exchangers

Details method of welding heat exchangers method of welding heat exchangers

1993-02-11

1994-03-08

Ramsey, Kenneth J.

Metal fusion bonding

Process

Plural joints

29890047, 29890054, 21912114, 228185, B23K 3102, B23K10114

Patent

active

052920569

ABSTRACT:
A heat exchanger includes exchanger tubes which are narrow in flow direction of an outer exchanger medium. Always two adjacent exchanger tubes are connected to each other by fins which are either U-shaped individual or are components of a meander-like fin strip. The tube sides are connected to bases of the individual fins or to contact portions of the fin strips by welding, particularly by fusion welding on the inner surfaces of the tube sides. The exchanger tubes are formed by two tube shells which are welded together at the longitudinal edges thereof after two adjacent tube shells have been connected to each other by the fins. The ends of the tubes are placed in tube plates. The resulting heat exchanger is completely galvanized and does not require support structures.

REFERENCES:
patent: 2375661 (1945-05-01), Karmazin
patent: 3003749 (1961-10-01), Morse
patent: 4332293 (1982-06-01), Hiramatsu
patent: 4529034 (1985-07-01), Saperstein
patent: 4644129 (1987-02-01), Miller
patent: 4661677 (1987-04-01), LaRocca
patent: 4685318 (1987-08-01), Ueda et al.
patent: 5026611 (1991-06-01), Usui et al.

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