DOUBLE-TUBE HEAT EXCHANGER AND METHOD OF PRODUCING THE SAME

Title:

DOUBLE-TUBE HEAT EXCHANGER AND METHOD OF PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2005/090890

Kind Code:

A1

Abstract:

A double-tube heat exchanger that is easy to produce, the entire part of which is smoothly bent so that the heat exchanger works as a part of piping, and that has high pressure resistance. In a cross-section perpendicular to the axis of an inner tube (1), there are bag-like or balloon-like bulged sections (7a) directing radially from the center, and openings of the bulged sections (7a) are closed and the head of each bulged section (7a) is in contact with the inner surface of an outer tube (2).

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Inventors:

YUSA KAZUHIKO

Application Number:

PCT/JP2005/001178

Publication Date:

September 29, 2005

Filing Date:

January 21, 2005

Export Citation:

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Assignee:

T RAD CO LTD (JP)
YUSA KAZUHIKO

International Classes:

F02M25/07; F28D7/10; F28D7/16; F28F1/02; F28F1/06; F28F1/08; (IPC1-7): F28D7/10; F02M25/07; F28D7/16

Foreign References:

JP2002013882A	2002-01-18
JPS543658U	1979-01-11

Other References: