Title:
FLOW SWITCHING VALVE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/145270
Kind Code:
A1
Abstract:
The present invention provides a long-life flow switching valve that avoids sticking of a stator and a rotor seal. This flow switching valve (1) includes: a stator (11) that has a plurality of first through-holes; a rotor seal (12) that rotates while being in contact with the stator (11) and that has a plurality of second through-holes; and a rotor (13) that is configured to make the rotor seal (12) rotate. Diamond-like carbon films (DLC films) (121; surfaces of protective films 120) are formed on sliding surfaces of the rotor seal (12) and the stator (11), and the average roughness Ra of the DLC films (121) is 0.05 μm or larger.
More Like This:
| WO/1996/040523 | FACE VALVE APPARATUS FOR CONTINUOUS MOTION CAN DECORATOR |
| JPH02503022 | [Title of the Invention] Axial control valve |
Inventors:
OTSUBO AYANO (JP)
UEDA MITSUHIKO (JP)
HARADA YUSHI (JP)
INAMI HISAO (JP)
UEDA MITSUHIKO (JP)
HARADA YUSHI (JP)
INAMI HISAO (JP)
Application Number:
PCT/JP2022/045270
Publication Date:
August 03, 2023
Filing Date:
December 08, 2022
Export Citation:
Assignee:
HITACHI HIGH TECH CORP (JP)
International Classes:
F16K11/074; F16K3/08
Foreign References:
| JPH08233121A | 1996-09-10 | |||
| JP2014520250A | 2014-08-21 | |||
| JP2014181353A | 2014-09-29 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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