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:
Mar. 07, 2006
Filed:
Mar. 26, 2004
Mitsuru Iwasaki, Nakano-ku, JP;
Shinobu Asakawa, Nakano-ku, JP;
Daisuke Matsuda, Nakano-ku, JP;
Shouji Tasaka, Nakano-ku, JP;
Toshinobu Imamura, Nakano-ku, JP;
Mitsuru Iwasaki, Nakano-ku, JP;
Shinobu Asakawa, Nakano-ku, JP;
Daisuke Matsuda, Nakano-ku, JP;
Shouji Tasaka, Nakano-ku, JP;
Toshinobu Imamura, Nakano-ku, JP;
Calsonic Kansei Corporation, Tokyo, JP;
Abstract
In a core structure of a heat exchanger, tubes and corrugated fins are alternately arranged between seat plates arranged opposite to each other with a predetermined space interposed therebetween. End portions of the tubes are inserted into tube holes formed respectively in each of the top and bottom seat plates to be fixed. On the seat plates, there are provided connection portions having wall portions slanting from main body portions thereof toward the tube holes. When a thickness of the tubes is 0.13 mm to 0.23 mm, a slant angle θ of the wall portions of the connection portions is set to satisfy: slant angle θ (°)≧25χ(thickness (mm) of sheet plate)+(−125χ(thickness (mm) of tube)+25).