Title:
金属製蛇腹管
Document Type and Number:
Japanese Patent JP6803514
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a metal bellows pipe capable of reducing friction loss.SOLUTION: In a metal bellows pipe 10 where a large diameter part 18 and a small diameter part 16 constituting pleats are alternately formed in an axial direction as at least a part of a wall pipe 12, a first inclination part 18 is inclined from the small diameter part 16 to the large diameter part 14 along a fluid circulation direction, a second inclination part 20 is inclined from the large diameter part 14 to the small diameter part 16, a first inclination angle θ1 of the first inclination part to a pipe axial line is made smaller than a second inclination angle θ2 of the second inclination part to the pipe axial line, and thereby flow resistance in feeding fluid from the large diameter part 14 to the small diameter part 16 in a pipe is made small. Consequently, friction loss of fluid circulating in the pipe can be reduced.SELECTED DRAWING: Figure 3
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Inventors:
Koji Seki
Application Number:
JP2017010145A
Publication Date:
December 23, 2020
Filing Date:
January 24, 2017
Export Citation:
Assignee:
Technoflex Co., Ltd.
International Classes:
F16L9/06; E03B7/02
Domestic Patent References:
| JP2012207790A | ||||
| JP2011112169A | ||||
| JP2006046378A | ||||
| JP2006046379A | ||||
| JP56101457A | ||||
| JP2009150458A |
Foreign References:
| FR1385986A1 | ||||
| US20100300569 |
Attorney, Agent or Firm:
Satoshi Eto