Title:
Iris diaphragm valve
Document Type and Number:
Japanese Patent JP6134287
Kind Code:
B2
Abstract:
A throttle valve 10 continuously increases/decreases the flow rate of air flowing through a communication hole 17 through which a first port 11 and a second port 12 are communicated with each other, by using a throttle valve element 22. A valve seat member 15 having the communication hole 17 is attached to a housing 13. An electric motor 25 is attached to a motor housing hole 24 formed in the housing 13. The throttle valve element 22 is driven in an axial direction by a motor shaft 28 of the electric motor 25. A gap between the motor housing hole 24 and the electric motor 25 is sealed by a fixed sealing member 41 having a large diameter, and the motor shaft 28 is sealed by a rotary sealing member 42 having a small diameter, whereby the throttle valve element can be driven by the electric motor having a small output.
Inventors:
Yu Saito
Ryotaro Oba
Ryotaro Oba
Application Number:
JP2014071092A
Publication Date:
May 24, 2017
Filing Date:
March 31, 2014
Export Citation:
Assignee:
Koganei Co., Ltd.
International Classes:
F16K41/04; F16K31/04
Domestic Patent References:
| JP2010138941A | ||||
| JP2008169863A | ||||
| JP59077179A | ||||
| JP2004161062A |
Attorney, Agent or Firm:
Yamato Tsutsui
Yoshitaka Kozuka
Akiko Tsutsui
Yoshitaka Kozuka
Akiko Tsutsui