Heat exchanger and method for manufacturing the same

Details Heat exchanger and method for manufacturing the same Heat exchanger and method for manufacturing the same

1996-04-25

1998-07-28

Leo, Leonard R.

Heat exchange

Tubular structure

With support or flow connector

165173, 285222, F28F 916

Patent

active

057851190

ABSTRACT:
A heat exchanger includes a tank having a pipe insertion hole disposed in a tank wall and a fluid pipe connected to the tank wall for introducing a fluid into the tank or discharging the fluid from the tank. The tank wall has a burr formed around the pipe insertion hole extending toward an interior of the tank. The fluid pipe has a flange formed on its periphery by bending the fluid pipe onto itself. An end portion of the fluid pipe is inserted into the pipe insertion hole so that the flange contacts an outer surface of the tank wall, and the inserted end portion is expanded and caulked together with the burr. A brazing material may be fixed between the flange and the tank wall during brazing even during vibration. The length of the pipe inserted into the tank may be minimized. The contact area between the fluid pipe and the tank is thereby enlarged.

REFERENCES:
patent: 475656 (1892-05-01), Bertels
patent: 484696 (1892-10-01), Benbow
patent: 1382049 (1921-06-01), Aspinwall
patent: 1481217 (1924-01-01), Maloy
patent: 1500560 (1924-07-01), Henderson
patent: 1721621 (1929-07-01), Gamble
patent: 1898713 (1933-02-01), Carrier et al.
patent: 2245430 (1941-06-01), Courtright et al.
patent: 3027142 (1962-03-01), Albers et al.
patent: 3390738 (1968-07-01), Kirsch et al.
patent: 4026456 (1977-05-01), Lema
patent: 4770446 (1988-09-01), Keller
patent: 5228727 (1993-07-01), Tokutake et al.
patent: 5575330 (1996-11-01), Hoeffken

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