Title:
VALVE STRUCTURE, AND HYDRAULIC DEVICE, FLUID MACHINE, AND MACHINE, EACH HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2017/077769
Kind Code:
A1
Abstract:
Provided is a valve structure configured so that the vibration of a valve body can be suppressed. A valve structure includes a valve body and a valve seat which has a fluid flow passage which is opened and closed. A groove which surrounds the center axis of the flow passage is provided in a flow passage wall surface downstream of the portions where the valve body and the valve seat are in contact.
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Inventors:
OH U (JP)
KOBAYASHI KATSUTOSHI (JP)
KOBAYASHI KATSUTOSHI (JP)
Application Number:
PCT/JP2016/076825
Publication Date:
May 11, 2017
Filing Date:
September 12, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
F16K47/02; F16K1/32; F16K17/04
Foreign References:
| JPS5275937U | 1977-06-07 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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