MOTOR-OPERATED VALVE AND METHOD FOR ACQUIRING VALVE BODY POSITION OF MOTOR-OPERATED VALVE

WIPO Patent Application WO/2023/203968

A1

[Problem] To provide a motor-operated valve with which variation in the rear of a throttle flow path can be minimized and the desired flow rate characteristics can be obtained. [Solution] A valve body 40 of a motor-operated valve 1 has a control unit 45 having a single tapered shape. The valve body 40 is driven in a movement section between a closed position Pa and a fully open position Pz by the rotation of a stepping motor 66. When the valve body 40 is in the closed position Pa, a control surface 46, which is the outer peripheral surface of the control unit 45, is in contact with a valve seat 16. When the valve body 40 has moved from the closed position Pa and is in the movement section, a throttle flow path is formed between the valve seat 16 and the control surface 46. The movement section includes a first section between the closed position Pa and a first position, and a second section between the first position and a second position. A control device 80 makes the step angle when the valve body 40 is in the first section smaller than the step angle when the valve body 40 is in the second section.

ARAI YUSUKE (JP)
YOSHIDA TATSUYA (JP)
HAYAKAWA JUNYA (JP)
HOSOYA TAKESHI (JP)

PCT/JP2023/012084

October 26, 2023

March 27, 2023

Click for automatic bibliography generation  

FUJIKOKI CORP (JP)

H02P8/22; F16K31/04

WO2012127860A1

2012-09-27

JPH10160034A	1998-06-16
JP2000257740A	2000-09-19
JPH10267153A	1998-10-09
JP2023012951A	2023-01-26

OPUS IP LAW FIRM (JP)

View/Download PDF      PDF Help

Previous Patent: ELECTRIC VALVE

Next Patent: FLUID CONTROL VALVE, FLUID CONTROL DEVICE, AND FLUID CONTROL VALVE MANUFACTURING METHOD