To provide a flow control valve, capable of reducing a driving force necessary for valve opening and closing operation by flowing a small amount of refrigerant in one direction even if flow control is not needed, and further improving responsiveness or the like.
The flow control valve comprises a valve body 20 including a valve shaft 25 having a valve element 24 at a lower end portion and a valve chamber 21 to which a fluid is introduced through a valve opening 22a formed in a valve seat 22 with/from which the valve element gets into contact and separates, and driving mechanisms 28 and 38 disposed between a rotor disposed on the inner circumference of a can 40 to which a lower end portion of the valve element is closely bonded through a predetermined clearance and the valve element to make the valve element contact with and separate from the valve seat by rotation of the rotor. A compression coil spring 34 for energizing the valve element to be pressed to the valve seat, which is disposed on the valve element, is formed so that the valve element is lifted from the valve seat against the energizing force of the compression coil spring by a pressure difference between a fluid inlet 62 side and the valve chamber side across the valve port, and the valve shaft includes pre-lift stopper means 25d and 39 for preventing the lift light of a predetermined distance or higher.
| JP2002310319 | VALVE DEVICE |
| JPH10227369 | ELECTRICALLY-DRIVEN FLOW CONTROL VALVE |
| JP2023090763 | MOTOR VALVE |
| JP2003172467A | 2003-06-20 | |||
| JP2006112617A | 2006-04-27 | |||
| JP2006207852A | 2006-08-10 | |||
| JP2004093022A | 2004-03-25 | |||
| JPH1089785A | 1998-04-10 | |||
| JP2002364935A | 2002-12-18 | |||
| JP2004093033A | 2004-03-25 | |||
| JP2005042891A | 2005-02-17 | |||
| JP2004263841A | 2004-09-24 |
| EP1411284A1 | 2004-04-21 |
Sekiya Mitsuo
Yasushi Hayakawa