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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9433996 B1

PDFFull Text
Date of Patent:
Sep. 06, 2016

Filed:

Apr. 25, 2012

Method of making a heat exchanger with an enhanced material system

Applicants:

Douglas C. Wintersteen, Burt, NY (US);

Kurt R. Mittlefehldt, Amherst, NY (US);

Inventors:

Douglas C. Wintersteen, Burt, NY (US);

Kurt R. Mittlefehldt, Amherst, NY (US);

Assignee:

MAHLE International GmbH, Stuttgart, DE;

Attorney:

Brinks Gilson & Lione

Primary Examiner:

David Bryant

Assistant Examiner:

Lawrence Averick

Int. Cl.
CPC ...
B21D 53/08 (2006.01); F28F 19/06 (2006.01); B23K 1/00 (2006.01); F28F 19/02 (2006.01); F28F 1/12 (2006.01); B23K 1/20 (2006.01); B23K 35/362 (2006.01); C22C 21/00 (2006.01); F28F 21/08 (2006.01); F28D 1/053 (2006.01); B32B 15/01 (2006.01); C22C 21/10 (2006.01); B23K 103/10 (2006.01); B32B 15/16 (2006.01);
U.S. Cl.
CPC ...
B21D 53/08 (2013.01); B23K 1/0012 (2013.01); B23K 1/203 (2013.01); B23K 35/362 (2013.01); B32B 15/016 (2013.01); C22C 21/00 (2013.01); C22C 21/10 (2013.01); F28D 1/05366 (2013.01); F28F 1/126 (2013.01); F28F 19/02 (2013.01); F28F 19/06 (2013.01); F28F 21/084 (2013.01); F28F 21/089 (2013.01); B23K 2203/10 (2013.01); F28F 2275/04 (2013.01); Y10T 29/4938 (2015.01); Y10T 29/49885 (2015.01); Y10T 29/49968 (2015.01);
Abstract

The disclosure relates to a method of manufacturing a heat exchanger assembly with an enhanced material system. The enhanced material system includes refrigerant tubes extruded from a high purity AA3000 series alloy billet having about 1% by weight (wt %) Mn and pre-braze treated with either a reactive zinc flux or a mixture of elemental zinc powder and a controlled atmosphere brazed (CAB) flux applied by glass plasma or organic binder, such as an organic binder, fins formed from modified a AA3003 alloy having less than 0.05 wt % Cu and from 1.2 to 1.8% wt % Zn, and header manifolds manufactured from a AA3000 series alloy with a AA4000 series cladding having 0.9 to 1.1 wt % Zn. The enhanced material system may also include a post braze coating and a subsequent organic polymer resin topcoat.

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