To improve quietness by reducing pulsation of a refrigerant with a simple structure, in a dehumidification valve of an air conditioner.
A plurality of throttle grooves 21 are formed in a valve seat portion 2b. During a dehumidification operation, a valve element 3 is driven by the energization of an electromagnetic coil device 6, the valve seat portion 2b of a valve seat member 2 with flange is valve-closed with a valve portion 3a. Throttling effect is obtained by expanding the refrigerant with the throttle grooves 21. A pulsation absorbing member 4 is arranged around a valve shaft 3b of the valve element 3. By the pulsation absorbing member 4, the pulsation energy of the refrigerant flowing in from a primary side joint 10 is absorbed within a valve chamber 1A. The pulsation absorbing member 4 is constituted by a sintered filter, a demister filter, a foamed member, a stacked flat plates, a stacked curved plates, a two-layer coil spring, a two-layer punching metal, etc. Or the valve shaft of the valve element is made of a porous pulsation absorbing member.
| JP2540140 | [Name of device] Water hammer prevention device |
| JPH0379883 | FLOW CONTROL VALVE |
YOKOTA TAKEHISA
| JP2008051147A | 2008-03-06 | |||
| JP2002213841A | 2002-07-31 |
Sadao Matsumura
Fumio Takino
Toshiaki Tsuda