Title:
DOUBLE PIPE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/025692
Kind Code:
A1
Abstract:
This double pipe (60) is provided with an inner pipe (62) in which a gas-like fluid flows, and an outer pipe (63) which has the inner pipe (62) therein and in which a liquid-like fluid flows between the outer pipe (63) and the inner pipe (62). The inner pipe (62) has: a pipe member (64) that is formed in a cylindrical shape; a spiral member (65) that is disposed inside the pipe member (64) and guides the flow of the gas-like fluid in a spiral shape; and abutting parts (68a, 68b) that are formed on at least one among the pipe member (64) and the spiral member (65) and that cause the longitudinal end parts of the pipe member (64) and the spiral member (65) to come into contact with each other.
Inventors:
YOSHIDA HIROYUKI (JP)
OONO HIROYUKI (JP)
OONO HIROYUKI (JP)
Application Number:
PCT/JP2017/026720
Publication Date:
February 08, 2018
Filing Date:
July 24, 2017
Export Citation:
Assignee:
CALSONIC KANSEI CORP (JP)
International Classes:
F28D7/10; F28F1/40
Foreign References:
| JP2001272193A | 2001-10-05 | |||
| JP2000146462A | 2000-05-26 | |||
| JP2000146463A | 2000-05-26 | |||
| JPS5442071U | 1979-03-20 | |||
| JP2002295987A | 2002-10-09 | |||
| JPS5420448A | 1979-02-15 | |||
| US3648754A | 1972-03-14 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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