Search International and National Patent Collections

1. (WO2018025692) DOUBLE PIPE AND METHOD FOR MANUFACTURING SAME

Pub. No.:    WO/2018/025692    International Application No.:    PCT/JP2017/026720
Publication Date: Fri Feb 09 00:59:59 CET 2018 International Filing Date: Tue Jul 25 01:59:59 CEST 2017
IPC: F28D 7/10
F28F 1/40
Applicants: CALSONIC KANSEI CORPORATION
カルソニックカンセイ株式会社
Inventors: YOSHIDA, Hiroyuki
吉田 宏行
OONO, Hiroyuki
大野 裕之
Title: DOUBLE PIPE AND METHOD FOR MANUFACTURING SAME
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.