Title:
直動式電磁弁及びそれをパイロット弁として備えた四方切換弁
Document Type and Number:
Japanese Patent JP6530991
Kind Code:
B2
Abstract:
The invention provides a direct-acting solenoid valve and a four-way switching valve using the same as a guide valve. The direct-acting solenoid valve and te four-way switching valve using the same as a guide valve do not need two big drop compressor frequency to effectively reduce noise and perform fast switching. According to voltage applied on an electromagnetic coil (51) of a direct-acting solenoid valve, a first plunger (61) and a second plunger (62) are respectively positioned in an attraction position and a non-attraction position.A valve core (71) which is in linkage is positioned in a first end position communicating a port (p1) and a port (p2) and is on the other end position communicating a port (p3) and a port (p4); a second valve core is positioned in an opening position of the opening port (p4) and in a closing position of the closing port (p4); during the switching process from a defrosting operation to a heating operation, the second valve core (72) is positioned in an opening position, pressure of a main valve chamber is reduced to preset pressure.
Inventors:
Hitoshi Kifune
Noriyuki Morita
Noriyuki Morita
Application Number:
JP2015143756A
Publication Date:
June 12, 2019
Filing Date:
July 21, 2015
Export Citation:
Assignee:
Fuji Koki Co., Ltd.
International Classes:
F16K31/06; F16K11/24; F16K31/08; F16K31/42; F25B41/20
Domestic Patent References:
| JP62184287A | ||||
| JP2001193862A | ||||
| JP8093956A | ||||
| JP57208367A | ||||
| JP60011074A |
Foreign References:
| US6295828 | ||||
| KR1020010026762A | ||||
| CN104421458A |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Ishikawa Takiharu
Naoki Takemura
Sekiya Mitsuo
Ishikawa Takiharu
Naoki Takemura