Title:
フレキシブル管
Document Type and Number:
Japanese Patent JP6872224
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a flexible pipe having durability against refrigerant used in a room air conditioner, and including a noise reduction member capable of suppressing increase in resistance of a flow passage even in a case where a pipe is bent.SOLUTION: A flexible pipe includes a pipe body 1 having a continuous uneven shape in an axis direction, and a metal-based noise reduction wire 2 arranged inside the pipe body 1 and extending spirally along the axis direction. A spiral outer diameter Ds of the noise reduction wire is 90% or more of an inner diameter D2 of a concave part of the pipe body 1, and a spiral pitch Ps of the noise reduction wire 2 is five times or less of a pitch Pb between the concave part and a convex part of the pipe body 1.SELECTED DRAWING: Figure 2
More Like This:
| WO/2019/106412 | CORRUGATED PIPE SEAL |
Inventors:
Takashi Yagi
Ryohei Hayashi
Tetsuro Masuno
Ryohei Hayashi
Tetsuro Masuno
Application Number:
JP2016255119A
Publication Date:
May 19, 2021
Filing Date:
December 28, 2016
Export Citation:
Assignee:
Nichirin Co., Ltd.
International Classes:
F16L9/06; F16L11/15; F16L11/26; F16L55/033; F25B41/40; F28F1/08
Domestic Patent References:
| JP48037819U | ||||
| JP57085163U | ||||
| JP2001508525A |
Attorney, Agent or Firm:
Kaji/Suhara Patent Office