Title:
CHANNEL CHANGEOVER VALVE
Document Type and Number:
Japanese Patent JP2017210970
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a channel changeover valve capable of changing-over a flow direction (a channel) of fluid efficiently by a simple configuration.SOLUTION: There is provided an ascending or descending driving part for ascending or descending a valve shaft 20 in a direction of axis line O. An inner housing 9A is provided with at least two inner ports p1 to p3 opened into a valve chamber 7A while being spaced apart in the direction of axis line O and opened there and at the same time at least one of communicating ports p11, p12 always communicating the valve chamber 7A and a communicating space 8A is opened, an outside port p10 always communicated with the communicating space is opened at an outer housing 9B, an upper back pressure chamber 30 and a lower back pressure chamber 31 are always communicated to each other, the valve shaft is ascended or descended in the valve chamber under a state in which at least two valve bodies 21 to 23 arranged at the valve shaft are internally contacted with the inner housing, thereby the communicated state between at least two of inner ports and the outer port is changed over.SELECTED DRAWING: Figure 18
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Inventors:
KOIZUMI YUKI
YANAGISAWA HIDE
TABUCHI TAKEMOTO
YANAGISAWA HIDE
TABUCHI TAKEMOTO
Application Number:
JP2016102391A
Publication Date:
November 30, 2017
Filing Date:
May 23, 2016
Export Citation:
Assignee:
FUJI KOKI KK
International Classes:
F16K31/54; F16K11/07; F16K31/04; F25B41/20
Domestic Patent References:
| JP2012522201A | 2012-09-20 | |||
| JPH06185657A | 1994-07-08 | |||
| JP2002206659A | 2002-07-26 | |||
| JP2016080115A | 2016-05-16 | |||
| JPS5582563U | 1980-06-06 | |||
| JPH11141697A | 1999-05-25 | |||
| JP2015057564A | 2015-03-26 | |||
| JP2002081557A | 2002-03-22 | |||
| JPH02113076U | 1990-09-10 | |||
| JPH02154879A | 1990-06-14 |
Foreign References:
| EP2357350A1 | 2011-08-17 |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Ishikawa Takiharu
Naoki Takemura
Sekiya Mitsuo
Ishikawa Takiharu
Naoki Takemura