Heat exchanger tube with ducts for counter current fluid flow

Details Heat exchanger tube with ducts for counter current fluid flow Heat exchanger tube with ducts for counter current fluid flow

1996-09-19

1998-06-09

Flanigan, Allen J.

Heat exchange

Side-by-side tubular structures or tube sections

With manifold type header or header plate

165177, 165173, F28D 103, F28F 140

Patent

active

057621330

ABSTRACT:
A heat exchanger, in particular a heat exchanger for a motor vehicle, has a plurality of tubes, each of which comprises a press-formed metal blank rolled on itself to form a casing defining two parallel ducts for flow of a fluid in counterflow mode between them. The ducts are separated by a longitudinal bulkhead, and the tube has a first end portion and a second end portion. The first end portion is arranged for connection to a header having two compartments. The second end of each individual tube is closed so as to obturate the two ducts, and at least two communication apertures are formed in the bulkhead in the vicinity of the second end.

REFERENCES:
patent: 4513811 (1985-04-01), Lesniak
patent: 5067235 (1991-11-01), Kato et al.
patent: 5125453 (1992-06-01), Bertrand et al.
patent: 5366006 (1994-11-01), Lu et al.
patent: 5441106 (1995-08-01), Yukitake
Patent Abstracts of Japan, vol. 12, n0 227 (M-713)m 28 Jun. 1988 & JP-A-63 021494 (Nippon Denso Co Ltd), 29 Jan. 1988.
French Search Report dated 1 Apr. 1996.

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