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Patent Searching and Data


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)
Application Number:
JP2014/055694
Publication Date:
September 11, 2015
Filing Date:
March 05, 2014
Export Citation:
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Assignee:
CHUGOKU ELECTRIC POWER (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:
JP2001201275A2001-07-27
JPS63123996A1988-05-27
JPH0926232A1997-01-28
US3332446A1967-07-25
US4326582A1982-04-27
US4938036A1990-07-03
Other References:
See also references of EP 3115725A4
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
All international patent business corporation (JP)
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