Method of manufacturing heat exchanger

Details Method of manufacturing heat exchanger Method of manufacturing heat exchanger

2011-03-01

2011-03-01

Hong, John C (Department: 3726)

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

Reexamination Certificate

active

07895749

ABSTRACT:
A heat exchange tube is formed by using a sheet member not clad with a brazing material layer, with bonding regions at which ends of the sheet member are overlapped and brazed by using a brazing material. This structure reduces the extent to which the brazing material becomes dispersed while the heat exchange tube is brazed and the likelihood of dissolution due to erosion, which makes it possible to assure the desired product quality, such as corrosion resistance, even when a tube material with a smaller wall thickness is used.

REFERENCES:
patent: 2063757 (1936-12-01), Saunders
patent: 3053511 (1962-09-01), Godfrey
patent: 3521707 (1970-07-01), Brown
patent: 5924485 (1999-07-01), Kobayashi et al.
patent: 7107680 (2006-09-01), Ueda
patent: 7117936 (2006-10-01), Ohata et al.
patent: 11-216592 (1999-08-01), None
patent: 2000-329488 (2000-11-01), None
patent: 2002-011570 (2002-01-01), None
patent: 2003-019555 (2003-01-01), None
International Search Report issued Jun. 1, 2004 in the International (PCT) Application PCT/JP2004/001699 of which the present application is the U.S. National Stage.

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