Titanium-made plate-type heat exchanger and production...

Details Titanium-made plate-type heat exchanger and production... Titanium-made plate-type heat exchanger and production...

2006-11-07

2006-11-07

Johnson, Jonathan (Department: 1725)

Metal fusion bonding

Process

Plural joints

C029S890050, C228S262720

Reexamination Certificate

active

07131569

ABSTRACT:
The present invention provides a titanium-made plate-type heat exchanger comprising first-fluid flow paths and second-fluid flow paths arranged alternately, which is formed by joining titanium-made constituting members, wherein: a titanium-zirconium based brazing solder containing 20 to 40 wt. % of titanium and 20 to 40 wt. % of zirconium, which melts under 880° C., is coated over positions to be connected of the constituting members, and brazing solder coated constituting members are heated under 880° C. in an vacuum and/or inert gas atmosphere. The present invention also provides a production method of the heat exchanger, which can prevent titanium-made constituting members of the heat exchanger from being deteriorated due to over-heating.

REFERENCES:
patent: 4602731 (1986-07-01), Dockus
patent: 5013612 (1991-05-01), Hunt et al.
patent: 6149051 (2000-11-01), Vollmer et al.
patent: 1994-155071 (1994-06-01), None
patent: 2001-175169 (2001-06-01), None
patent: 2002-5589 (2002-01-01), None
patent: 2002-35929 (2002-02-01), None

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