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:
Aug. 07, 2001
Filed:
Apr. 27, 1999
Takeshi Iguchi, Gifu, JP;
Homare Kotate, Nagoya, JP;
Akira Uchikawa, Nagoya, JP;
Koji Hirakami, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
Fins and tubes are brazed by brazing material spread on the inside of bent portions. As the interval between the fins and the tubes does not increase upon melting the brazing material, the tubes and the fins can be easily piled and assembled with each other, and the operability in assembling a heat exchanger can be improved. Further, as the brazing material remains mainly around the bent portions, most parts of the fins and the tubes are not covered with the brazing material, and there is no diffusion of the brazing material at the heating of the brazing step. Accordingly, heat exchanging performance of the heat exchanger can be improved, and even if the thickness of the fins and that of the tubes are reduced, the occurrence of the erosion can be prevented.