Metal working – Method of mechanical manufacture – Rocket or jet device making
Patent
1991-02-19
1992-09-29
Rivell, John
Metal working
Method of mechanical manufacture
Rocket or jet device making
29890054, 228136, 2281732, 2281734, 228183, 165153, 165173, B21D 3906, B23K 3102
Patent
active
051505207
ABSTRACT:
A method of affixing a plurality of tubes having oval ends into a plurality of corresponding oval openings of equal circumference in the header wall of a heat exchanger. The minor diameter of the tube ends is greater than the minor diameter of the header openings and the major diameter of the tube ends is less than the major diameter of the header openings. The tube ends are inserted into corresponding openings in the header wall whereupon the minor diameter of the tube ends is reduced and the major diameter of the tube ends is increased to create a substantially fully contacting fit around the circumference with said header openings. Ends of the tubes are welded to corresponding collar openings in the header wall to form a plurality of tube-to-header joints. Flux is applied to the air-facing side of the tube-to-header joints, and molten solder is applied to the opposite liquid-facing side and flowed into any voids in the welded joints to substantially seal the joints against leakage of liquid. Only those joints having potential liquid leaking voids receive the solder - sound, liquid-tight welded joints are not solder sealed.
REFERENCES:
patent: 858258 (1907-06-01), Briscoe et al.
patent: 2488627 (1949-11-01), Hisey
patent: 2573161 (1951-10-01), Tadewald
patent: 3078551 (1958-08-01), Patriarca et al.
patent: 3310868 (1964-05-01), La Porte et al.
patent: 3972371 (1976-08-01), Plegat
patent: 4077559 (1978-03-01), Watson, Jr.
patent: 4128235 (1978-12-01), Gersbacher
patent: 4377024 (1983-03-01), Saperstein
patent: 4453301 (1984-06-01), Mort et al.
patent: 4467511 (1984-08-01), Collgon
patent: 4482415 (1984-11-01), Mort et al.
patent: 4498220 (1985-01-01), Fiegen et al.
patent: 4513811 (1985-04-01), Lesniak
patent: 4529034 (1985-07-01), Saperstein
patent: 4632291 (1986-12-01), Rahn et al.
patent: 4659003 (1987-04-01), Simonetti
patent: 4724994 (1988-02-01), Flury
patent: 4730669 (1988-03-01), Beasley et al.
patent: 4744505 (1988-05-01), Calleson
patent: 4858686 (1989-08-01), Calleson
Leo L. R.
Rivell John
The Allen Group Inc.
LandOfFree
Heat exchanger and method of assembly thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat exchanger and method of assembly thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat exchanger and method of assembly thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1961692