Title:
Double eccentricity valve
Document Type and Number:
Japanese Patent JP6248196
Kind Code:
B2
Abstract:
A double eccentric valve includes a first bearing and a second bearing spaced apart from each other along a center axis of a rotary shaft. When a motor is operated and the valve element is at a controlled folly-closed position corresponding to a fully-closed state, the rotary shaft is inclined about the first bearing serving as a fulcrum and is out of contact with the second bearing. When a valve opening degree is a predetermined opening degree corresponding to a valve open state of the valve element, the rotary shaft is restrained by the second bearing. In a small opening range between the valve opening degree at the controlled fully-closed position and the predetermined small opening degree, a variation amount in open area relative to a variation amount in valve opening degree is smaller than that in an opening range larger than the predetermined opening degree.
Inventors:
Hiroshi Misumi
Nao Kitamura
Nao Kitamura
Application Number:
JP2016531297A
Publication Date:
December 13, 2017
Filing Date:
June 24, 2015
Export Citation:
Assignee:
Aisan Industry Co., Ltd.
International Classes:
F16K1/22; F16K1/24
Domestic Patent References:
| JP2009243336A | ||||
| JP8303308A | ||||
| JP2008075517A | ||||
| JP2011058536A |
Foreign References:
| US20040177839 | ||||
| US4203573 |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office
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