Title:
VALVE CONTROL DEVICE, DRIVE CONTROL DEVICE, AND FLUID CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/121747
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a valve control device, a drive control device, and a fluid control device, which are suitable for adjusting a valve. The valve control device comprises: a rod-shaped rotor which is provided so as to be rotatable about a rotation axis, has one end side directly or indirectly connected to a valve body having at least a portion located in a flow path through which a fluid flows, and changes the relative positions of the valve body and a valve seat closed by the valve body or the contact force between the valve body and the valve seat; a pair of contacts which sandwich the rotor and allow the rotor to rotate; a moving unit which causes relative movement of the pair of contacts and includes a piezoelectric element; and a drive control unit which applies, to the piezoelectric element, a voltage waveform having a rising slope and a falling slope different from each other to rotate the rotor by means of the pair of contacts, and causes a slip between the rotor and the pair of contacts by the steep side to rotate the rotor in an arbitrary direction, thereby controlling the relative position between the valve body and the valve seat or the contact force between the valve body and the valve seat.
Inventors:
CHEE SZE KEAT (JP)
YANO TAKESHI (JP)
YANO AKIO (JP)
YANO TAKESHI (JP)
YANO AKIO (JP)
Application Number:
PCT/JP2019/045190
Publication Date:
June 18, 2020
Filing Date:
November 19, 2019
Export Citation:
Assignee:
MECHANO TRANSF CORPORATION (JP)
International Classes:
F16K31/02; H02N2/12; H02N2/14
Foreign References:
| JP2015053789A | 2015-03-19 | |||
| JP2001012632A | 2001-01-16 | |||
| JPH0392525A | 1991-04-17 |
Attorney, Agent or Firm:
AKESAKA Masahiro (JP)
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