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:
Apr. 01, 2003
Filed:
Sep. 14, 2000
Norihide Kawachi, Kariya, JP;
Ken Yamamoto, Obu, JP;
Takeshi Okinotani, Kariya, JP;
Toshiya Kouga, Chiryu, JP;
Toshihiro Imai, Nagoya, JP;
Norimasa Baba, Toyoake, JP;
Tomoaki Kobayakawa, Tokyo, JP;
Kazutoshi Kusakari, Urawa, JP;
Michiyuki Saikawa, Zushi, JP;
Other;
Abstract
A heat exchanger includes a first tube in which water flows and a second tube in which refrigerant flows, and performs heat exchange between water and refrigerant. The first tube and the second tube are bonded to each other by brazing at joint surfaces thereof such that water flow crosses refrigerant flow perpendicularly. The joint surface of the first tube is divided into several surface regions by grooves. Accordingly, the joint surface of the first tube can be brazed to the joint surface of the second tube uniformly.