Double-pipe heat exchanger and process for manufacturing same

Details Double-pipe heat exchanger and process for manufacturing same Double-pipe heat exchanger and process for manufacturing same

1996-03-05

1998-03-31

Flanigan, Allen J.

Heat exchange

Non-communicating coaxial enclosures

165916, F28D 710

Patent

active

057327696

ABSTRACT:
A surrounding bead-type collar is pressed out from the pipe material or aat least one of two pipes forming a double-pipe heat exchanger. The radial height of the collars corresponds to the difference of the radii of the interior wall of the exterior pipe and of the exterior wall of the interior pipe. The collars form axial ends of an annular flow space of a completed heat exchanger. The thus constructed pipes with collars may be slid axially and thereby mounted on one another during manufacturing. Before this mounting operation, they are plated with a Nocolok fluxing agent and are subsequently soldered together in a heating step.

REFERENCES:
patent: 2752128 (1956-06-01), Dedo
patent: 3001767 (1961-09-01), Straubing
patent: 3323586 (1967-06-01), Burne et al.
patent: 3339260 (1967-09-01), Burne et al.
patent: 3831671 (1974-08-01), Was
patent: 3831672 (1974-08-01), Battisti
patent: 4373578 (1983-02-01), Saperstein et al.
patent: 5107922 (1992-04-01), So

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