HEAT EXCHANGER TUBE AND METHOD OF ITS MANUFACTURE

Title:

HEAT EXCHANGER TUBE AND METHOD OF ITS MANUFACTURE

Document Type and Number:

WIPO Patent Application WO/1998/044306

Kind Code:

A1

Abstract:

A heat exchanger tube which has two flat plate parts defining therebetween a passage through which heat exchanging media flow and a folded part which is formed by folding at least one end part of at least one flat plate part so as to have a thickness which is an integral multiple of that of the flat plate part. The folded part and the corresponding end in the widthwise direction of the other flat plate part are joined together. The obtained tube has such features that the junction strength of the joined part is high enough to ensure high pressure resistance, that the internal dimensions of the tube can be changed easily and accurately, that flux can be applied sufficiently to necessary positions for soldering, and that it can facilitate the adoption of a reinforced structure at the central part in the widthwise direction of the tube.

Inventors:

HOSOYA KAZUKI (JP)
WATANABE AKIMICHI (JP)
KADO HIROTAKA (JP)

Application Number:

PCT/JP1998/001370

Publication Date:

October 08, 1998

Filing Date:

March 26, 1998

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SANDEN CORP (JP)
HOSOYA KAZUKI (JP)
WATANABE AKIMICHI (JP)
KADO HIROTAKA (JP)

International Classes:

F28F1/00; B21C37/15; F28D1/03; F28F1/02; F28F1/10; F28F1/40; F28F3/04; (IPC1-7): F28F1/02; B21D53/02; F28F1/40

Foreign References:

JPH0486489A	1992-03-19
JPS6166091A	1986-04-04
JPS59125395A	1984-07-19
JPH08226784A	1996-09-03
JPH0777397A	1995-03-20

Other References: