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.:
Date of Patent:
Jul. 24, 2007
Filed:
Nov. 30, 2004
Kazumitsu Sugano, Toyota, JP;
Noriyuki Yamada, Tokyo, JP;
Akio Niikura, Tokyo, JP;
Yoshiaki Ogiwara, Tokyo, JP;
Masaki Shimizu, Kariya, JP;
Kenji Negura, Kariya, JP;
Sunao Fukuda, Kariya, JP;
Yoshihiko Kamiya, Kariya, JP;
Kazumitsu Sugano, Toyota, JP;
Noriyuki Yamada, Tokyo, JP;
Akio Niikura, Tokyo, JP;
Yoshiaki Ogiwara, Tokyo, JP;
Masaki Shimizu, Kariya, JP;
Kenji Negura, Kariya, JP;
Sunao Fukuda, Kariya, JP;
Yoshihiko Kamiya, Kariya, JP;
Furukawa-Sky Aluminum Corp., Tokyo, JP;
Denso Corporation, Aichi, JP;
Abstract
An aluminum alloy heat exchanger having a tube composed of a thin aluminum alloy clad material, wherein, in the clad material, one face of an aluminum alloy core material containing Si 0.05–1.0 mass % is clad with an Al—Si-series filler material containing Si 5–20 mass %, and the other face is clad with a sacrificial material containing Zn 2–10 mass % and/or Mg 1–5 mass %, and wherein an element diffusion profile of the clad material by EPMA satisfies (1) and/or (2):L-L-L≧40(μm)   (1)L-L-L≧5(μm)   (2)wherein L is a tube wall thickness (μm); Lis a position (μm) indicating an amount of Si diffused from the filler material; and Land Leach represent a region (μm) indicating an amount of Zn or Mg diffused from the sacrificial material, respectively; and a method of producing the heat exchanger.