Title:
TUBE AND METHOD FOR MANUFACTURING TUBE, TUBE FOR HEAT EXCHANGER AND METHOD FOR MANUFACTURING TUBE FOR HEAT EXCHANGER, AND HEAT EXCHANGER AND MEHOD FOR MANUFACTURING HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2003/052337
Kind Code:
A1
Abstract:
A flat−shaped tube (2), a structural member of a radiator (1), can be manufactured easily without welding a connection portion for connecting edge portions of a plate member together. A connecting portion (11c) of the tube (2) is formed in a double layer structure such that both opposing edge portions of the tube are bent toward each other in a curved shape, the inner face of one of the curved portions (11i) and the outer face of the other curved portion (11g) overlap with each other in a surface contact state in the width direction of the tube, and the surface contact portion is fixed through a brazing material (13).
Inventors:
KINOSHITA MOTONARI (JP)
NAGAMI MASAYUKI (JP)
HIRASAWA SATORU (JP)
MIMODA MASAYUKI (JP)
NAGAMI MASAYUKI (JP)
HIRASAWA SATORU (JP)
MIMODA MASAYUKI (JP)
Application Number:
PCT/JP2002/011176
Publication Date:
June 26, 2003
Filing Date:
October 28, 2002
Export Citation:
Assignee:
DAIWA RADIATOR KOGYO CO LTD (JP)
OKA IND LTD (JP)
KINOSHITA MOTONARI (JP)
NAGAMI MASAYUKI (JP)
HIRASAWA SATORU (JP)
MIMODA MASAYUKI (JP)
OKA IND LTD (JP)
KINOSHITA MOTONARI (JP)
NAGAMI MASAYUKI (JP)
HIRASAWA SATORU (JP)
MIMODA MASAYUKI (JP)
International Classes:
B21C37/10; B21C37/15; F28D1/03; F28F1/02; (IPC1-7): F28F1/02
Domestic Patent References:
| WO2000052410A1 | 2000-09-08 |
Foreign References:
| US6192977B1 | 2001-02-27 | |||
| JPH0968394A | 1997-03-11 | |||
| JPH05226527A | 1993-09-03 | |||
| JPS5490750U | 1979-06-27 | |||
| JP2001165587A | 2001-06-22 |
Attorney, Agent or Firm:
Hirose, Tetsuo (Nakanishi Bldg. 5th Floor 2-5-6 Nishikanda,
2-5-6, Nishikanda, Chiyoda-ku, Tokyo, Chiyoda-ku Tokyo 101-0065, JP)
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