Title:
DOUBLE TUBE, HEAT EXCHANGER, AND METHOD FOR MANUFACTURING DOUBLE TUBE
Document Type and Number:
WIPO Patent Application WO/2015/132921
Kind Code:
A1
Abstract:
Provided is a double tube comprising: a cylindrical outer tube; a cylindrical inner tube provided inside the outer tube, and provided with a helical protrusion on the outer circumferential surface of the inner tube; and a helical flow passage forming member provided inside the inner tube, and forming a helical flow passage inside the inner tube.
Inventors:
WADA YASUTAKA (JP)
KUBOTA HARUHITO (JP)
YAMAMURA YUKIMASA (JP)
UCHIYAMA ICHIRO (JP)
OYAMA KEIJI (JP)
YAMASAKI TOSHIKI (JP)
MATSUMURA YUKIHIKO (JP)
KAWAI YOSHIFUMI (JP)
NOGUCHI TAKASHI (JP)
KUBOTA HARUHITO (JP)
YAMAMURA YUKIMASA (JP)
UCHIYAMA ICHIRO (JP)
OYAMA KEIJI (JP)
YAMASAKI TOSHIKI (JP)
MATSUMURA YUKIHIKO (JP)
KAWAI YOSHIFUMI (JP)
NOGUCHI TAKASHI (JP)
Application Number:
PCT/JP2014/055694
Publication Date:
September 11, 2015
Filing Date:
March 05, 2014
Export Citation:
Assignee:
CHUGOKU ELECTRIC POWER (JP)
UNIV HIROSHIMA (JP)
CHUDEN PLANT CO LTD (JP)
TOYO KOATSU CO LTD (JP)
UNIV HIROSHIMA (JP)
CHUDEN PLANT CO LTD (JP)
TOYO KOATSU CO LTD (JP)
International Classes:
F28D7/10; F25B39/00; F28F1/36; F28F1/40
Foreign References:
| JP2001201275A | 2001-07-27 | |||
| JPS63123996A | 1988-05-27 | |||
| JPH0926232A | 1997-01-28 | |||
| US3332446A | 1967-07-25 | |||
| US4326582A | 1982-04-27 | |||
| US4938036A | 1990-07-03 |
Other References:
See also references of EP 3115725A4
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
All international patent business corporation (JP)
All international patent business corporation (JP)
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