JP6111082B2 - Solenoid valve with differential pressure valve - Google Patents
Solenoid valve with differential pressure valve Download PDFInfo
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- JP6111082B2 JP6111082B2 JP2013022342A JP2013022342A JP6111082B2 JP 6111082 B2 JP6111082 B2 JP 6111082B2 JP 2013022342 A JP2013022342 A JP 2013022342A JP 2013022342 A JP2013022342 A JP 2013022342A JP 6111082 B2 JP6111082 B2 JP 6111082B2
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- 239000003507 refrigerant Substances 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
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Description
本発明はヒートポンプシステムに使用される差圧弁付電磁弁に関する。 The present invention relates to a solenoid valve with a differential pressure valve used in a heat pump system.
差圧弁付電磁弁が適用される公知のヒートポンプシステムを図９に示す。
差圧弁付電磁弁１０は３方弁であって、弁入口１１、電磁弁出口１２、差圧弁出口１３を備える。
例えば、暖房運転時には、電動駆動の圧縮機１で圧縮された高温の冷媒は、配管２を介して凝縮器として機能する室内熱交換器３へ送られ、室内ヒーティングを行う。室内熱交換器を出た冷媒は、配管４を介して暖房用の配管５、暖房絞り６を通って室外熱交換器７へ送られ、差圧弁付電磁弁１０へ送られ、電磁弁出口１２から配管１４を通って、アキュームレータ１５へ送られる。アキュームレータ１５で気相冷媒は、配管１６を通って、圧縮機１へ戻される。
A known heat pump system to which a solenoid valve with a differential pressure valve is applied is shown in FIG.
The electromagnetic valve with differential pressure valve 10 is a three-way valve, and includes a valve inlet 11, an electromagnetic valve outlet 12, and a differential pressure valve outlet 13.
For example, at the time of heating operation, the high-temperature refrigerant compressed by the electrically driven compressor 1 is sent to the indoor heat exchanger 3 functioning as a condenser via the pipe 2 to perform indoor heating. The refrigerant that has exited the indoor heat exchanger is sent to the outdoor heat exchanger 7 through the pipe 4 and the heating pipe 5 and the heating throttle 6 through the pipe 4, to the electromagnetic valve 10 with a differential pressure valve, and to the electromagnetic valve outlet 12 Is sent to the accumulator 15 through the pipe 14. In the accumulator 15, the gas-phase refrigerant is returned to the compressor 1 through the pipe 16.
冷房運転時には、配管４までの冷媒の流れは暖房時と同じであり、その後、配管８から電磁弁９を通り、室外熱交換器７に入り、差圧弁付電磁弁１０へ送られ、差圧弁出口１３から配管２０へ送り出される。そして、冷房絞り２１で減圧され、エバポレータ２２で蒸発して冷気を発生させる。温調された空気はファン２４で室内へ送り出される。
この種の差圧弁付電磁弁は下記の特許文献に開示されている。
During the cooling operation, the flow of the refrigerant to the pipe 4 is the same as that during the heating, and then passes through the solenoid valve 9 from the pipe 8 and enters the outdoor heat exchanger 7 and is sent to the solenoid valve 10 with the differential pressure valve. It is sent out from the outlet 13 to the pipe 20. Then, the pressure is reduced by the cooling diaphragm 21 and evaporated by the evaporator 22 to generate cold air. The temperature-controlled air is sent out indoors by the fan 24.
This type of solenoid valve with a differential pressure valve is disclosed in the following patent document.
自動車の動力が、内燃式エンジンからハイブリッド、さらに電気式モータに発展するにつれて、空調装置の圧縮機もモータ駆動となり、静粛化が進んでいる。
そこで本発明の目的は、差圧弁付電磁弁の防振性を向上させて騒音発生を低減させることにある。
As the power of automobiles develops from an internal combustion engine to a hybrid and further to an electric motor, the compressor of the air conditioner is also driven by a motor, and quietness is progressing.
Accordingly, an object of the present invention is to improve the vibration isolation of the electromagnetic valve with a differential pressure valve and reduce noise generation.
前記課題を解決するため、本発明の差圧弁付電磁弁は、弁本体に熱交換器からの冷媒が流入する流入口と、アキュームレータへ冷媒が流出する第１流出口と、絞りに冷媒が流出する第２流出口と、上記流入口に連通し主弁座を備える上弁室と、上記上弁室から上記第１流出口に連通する下弁室と、上記上弁室内に配置されて電磁弁部により上記主弁座を開閉するパイロット式の主弁体と、上記主弁体の閉弁時に流入口側圧力と第１流出口側圧力の差圧により作動して上記冷媒を上記絞りへ直接導入する差圧弁部とを備える。 In order to solve the above-described problems, the solenoid valve with a differential pressure valve according to the present invention includes an inlet through which refrigerant from the heat exchanger flows into the valve body, a first outlet through which refrigerant flows out to the accumulator, and refrigerant flows out through the throttle. A second valve outlet, an upper valve chamber having a main valve seat communicating with the inlet, a lower valve chamber communicating from the upper valve chamber to the first outlet, and an electromagnetic valve disposed in the upper valve chamber. A pilot-type main valve body that opens and closes the main valve seat by a valve portion, and operates by a differential pressure between the inlet side pressure and the first outlet side pressure when the main valve body is closed, and the refrigerant is supplied to the throttle And a differential pressure valve portion to be directly introduced.
そして、上記差圧弁部は、上記下弁室の側面部において上記第１流出口と対向する位置に設けてあり、差圧弁座と、この差圧弁座に対向して配設される差圧弁体と、上記第１流出口内に配設される差圧弁枠と、この差圧弁枠内に配設されて上記差圧弁体を上記差圧弁座に向けて付勢するコイルバネと、上記差圧弁体の振動を防止する防振バネとを備え、上記防振バネは、上記差圧弁体に備え付けてあり、外側に突出した突起状の凸部が先端に形成され上記差圧弁枠内周面に摺動自在に弾接する複数の弾性脚部を備える。 And the said differential pressure | voltage valve part is provided in the position facing the said 1st outflow port in the side part of the said lower valve chamber, A differential pressure | voltage valve seat and the differential pressure | voltage valve body arrange | positioned facing this differential pressure | voltage valve seat A differential pressure valve frame disposed in the first outlet, a coil spring disposed in the differential pressure valve frame and biasing the differential pressure valve body toward the differential pressure valve seat, and the differential pressure valve body An anti-vibration spring for preventing vibration, and the anti-vibration spring is provided on the differential pressure valve body, and a protruding protrusion protruding outward is formed at the tip and slides on the inner peripheral surface of the differential pressure valve frame. A plurality of elastic legs that are elastically contacted freely .
上記複数の弾性脚部は、上記差圧弁枠内周面の軸心方向に延伸する構成、あるいは、上記差圧弁枠内周面の周方向に延伸する構成を有する。 On SL plurality of resilient legs configured to extend in the axial direction of the differential pressure valve frame inner surface, or has a configuration extending in the circumferential direction of the differential pressure valve frame inner surface.
上記構成を備える本発明の差圧弁付電磁弁は、差圧弁の防振性を向上して騒音発生を低減する。 The electromagnetic valve with a differential pressure valve of the present invention having the above configuration improves the vibration isolation performance of the differential pressure valve and reduces noise generation.
図１に示すように、差圧弁付電磁弁１００は、一個の弁本体１０２に電磁弁部２００と差圧弁部３００が装備されて、３方弁を構成する。
弁本体１０２は冷媒の流入口１１０を有し、上弁室１１２に連通する。上弁室１１２内には主弁座１１４が設けられ、主弁座１１４を通った冷媒は通路１１６、第１流出口１２０から送り出される。
As shown in FIG. 1, the electromagnetic valve 100 with a differential pressure valve comprises a single valve main body 102 with an electromagnetic valve part 200 and a differential pressure valve part 300 to form a three-way valve.
The valve body 102 has a refrigerant inlet 110 and communicates with the upper valve chamber 112. A main valve seat 114 is provided in the upper valve chamber 112, and the refrigerant passing through the main valve seat 114 is sent out from the passage 116 and the first outlet 120.
上弁室１１２の冷媒は分岐通路１１８を介して差圧弁部３００側へ送られる。差圧弁部３００は、第１流出口１２０に対向する下弁室３１０を有し、差圧弁座３１２が設けられている。分岐通路１１８の冷媒は差圧弁座３１２を通って第２流出口１３０から送り出される。 The refrigerant in the upper valve chamber 112 is sent to the differential pressure valve unit 300 side through the branch passage 118. The differential pressure valve unit 300 has a lower valve chamber 310 that faces the first outlet 120 and is provided with a differential pressure valve seat 312. The refrigerant in the branch passage 118 is sent out from the second outlet 130 through the differential pressure valve seat 312.
差圧弁部３００は差圧弁体３３０を有し、シール部材３３２が差圧弁座３１２を開閉する。
差圧弁枠３２０内に配設したコイルバネ３７０は差圧弁体３３０を常時閉弁方向に付勢する。
下弁室３１０と第１流出口１２０の冷媒の圧力差が所定値以上となると、差圧弁部３００は開弁し、冷媒は第２流出口１３０から流出する。
The differential pressure valve unit 300 includes a differential pressure valve body 330, and the seal member 332 opens and closes the differential pressure valve seat 312.
A coil spring 370 disposed in the differential pressure valve frame 320 normally biases the differential pressure valve body 330 in the valve closing direction.
When the pressure difference between the refrigerant in the lower valve chamber 310 and the first outlet 120 becomes a predetermined value or more, the differential pressure valve unit 300 is opened, and the refrigerant flows out from the second outlet 130.
電磁弁部２００は弁本体１０２の上弁室１１２の開口部に固着される吸引子２６０を有し、吸引子２６０内に主弁体２１０が配置される。主弁体２１０は主弁座１１４に対向するシール部材２１２を有する。主弁体２１０の中心部にはパイロット孔２１４が形成され、パイロット孔２１４に並行に均圧孔２１６が設けられている。パイロット孔２１４の頂部にはパイロット弁座２１８が設けてあり、プランジャ２７０の先端のシール部材２７２がパイロット弁座２１８を開閉する。 The electromagnetic valve unit 200 has a suction element 260 fixed to the opening of the upper valve chamber 112 of the valve body 102, and the main valve body 210 is disposed in the suction element 260. The main valve body 210 has a seal member 212 facing the main valve seat 114. A pilot hole 214 is formed at the center of the main valve body 210, and a pressure equalizing hole 216 is provided in parallel to the pilot hole 214. A pilot valve seat 218 is provided at the top of the pilot hole 214, and a seal member 272 at the tip of the plunger 270 opens and closes the pilot valve seat 218.
主弁体２１０はコイルバネ２３０によりシール部材２１２が主弁座１１４から離れる方向（開弁方向）に付勢されている。
吸引子２６０の上部はパイプ２５０の内部に挿入される。吸引子２６０の中央部にはプランジャ２７０が摺動自在に挿入される。
The main valve body 210 is urged by a coil spring 230 in a direction (opening direction) in which the seal member 212 is separated from the main valve seat 114.
The upper portion of the suction element 260 is inserted into the pipe 250. A plunger 270 is slidably inserted into the central portion of the suction element 260.
パイプ２５０の外側には電磁コイル２４０が取り付けられる。
電磁コイル２４０に通電すると、パイプ２５０の内部の吸引子２６０およびプランジャ２７０に磁力が発生し、プランジャ２７０をコイルスプリング２８０に抗して、下降させ、主弁体２１０はコイルバネ２３０に抗して押し下げられて、シール部材２１２が主弁座１１４を閉じる。
An electromagnetic coil 240 is attached to the outside of the pipe 250.
When the electromagnetic coil 240 is energized, a magnetic force is generated in the attractor 260 and the plunger 270 inside the pipe 250, the plunger 270 is lowered against the coil spring 280, and the main valve body 210 is pushed down against the coil spring 230. Thus, the seal member 212 closes the main valve seat 114.
電磁コイル２４０の通電が断たれると、コイルスプリング２８０の力でプランジャ２７０が上昇し、先端のシール部材２７２も上昇することでパイロット弁座２１８が開く。均圧孔２１６を通って、主弁体２１０上部の受圧面に作用していた圧力がパイロット孔２１４を通じて、通路１１６側に排出される。これにより、主弁体２１０上部の受圧面に作用していた圧力が主弁体２１０下部の受圧面に作用していた圧力よりも小さくなり、主弁体２１０の上部受圧面、下部受圧面の差圧、およびコイルスプリング２９０により主弁体２１０は開弁する。 When the energization of the electromagnetic coil 240 is cut off, the plunger 270 is raised by the force of the coil spring 280 and the tip seal member 272 is also raised, so that the pilot valve seat 218 is opened. Through the pressure equalizing hole 216, the pressure acting on the pressure receiving surface at the top of the main valve body 210 is discharged to the passage 116 side through the pilot hole 214. As a result, the pressure acting on the pressure receiving surface above the main valve body 210 is smaller than the pressure acting on the pressure receiving surface below the main valve body 210, and the upper pressure receiving surface and the lower pressure receiving surface of the main valve body 210 are reduced. The main valve element 210 is opened by the differential pressure and the coil spring 290.
なお、上述の図１の差圧弁付電磁弁１００は、電磁弁部２００がノーマルオープン形電磁弁（無通電状態で「開」）の構成としたが、ノーマルクローズ形電磁弁（無通電状態で「閉」）とすることも当然に可能である。 In the electromagnetic valve 100 with a differential pressure valve in FIG. 1 described above, the electromagnetic valve unit 200 is configured as a normally open type electromagnetic valve (“open” in a non-energized state), but a normally closed type solenoid valve (in a non-energized state). Naturally, “closed”) is also possible.
図２に示すように、差圧弁体３３０は前面に差圧弁座３１２に当接するシール部材３３２を有し、後面にはカシメ部３３４を介してストッパ３４０が固着される。差圧弁体３３０とストッパ３４０の間にはダイアフラム３５０が挟みこまれ、ダイアフラム３５０の外周部は押え部材３６０を介して弁本体１０２側に固着される。 As shown in FIG. 2, the differential pressure valve body 330 has a seal member 332 in contact with the differential pressure valve seat 312 on the front surface, and a stopper 340 is fixed to the rear surface via a caulking portion 334. A diaphragm 350 is sandwiched between the differential pressure valve body 330 and the stopper 340, and an outer peripheral portion of the diaphragm 350 is fixed to the valve body 102 side through a pressing member 360.
差圧弁枠３２０内にはコイルバネ３７０が配設され、ストッパ３４０を介して差圧弁体３３０を閉弁側に付勢する。コイルバネ３７０とストッパ３４０の間には防振バネ４００が装備される。防振バネ４００は弾性脚部４２０を有し、弾性脚部４２０は差圧弁枠３２０の内周面に摺動自在に弾接する。 A coil spring 370 is disposed in the differential pressure valve frame 320 and biases the differential pressure valve body 330 toward the valve closing side via a stopper 340. An anti-vibration spring 400 is provided between the coil spring 370 and the stopper 340. The anti-vibration spring 400 has an elastic leg 420, and the elastic leg 420 is slidably elastically contacted with the inner peripheral surface of the differential pressure valve frame 320.
差圧弁部３００は防振バネ４００を備えることにより、差圧弁体３３０に発生する振動を防止することができる。この作用により冷媒が差圧弁部３００を通過する際に発生させる騒音を低減することができる。 Since the differential pressure valve unit 300 includes the vibration-proof spring 400, vibration generated in the differential pressure valve body 330 can be prevented. By this action, noise generated when the refrigerant passes through the differential pressure valve unit 300 can be reduced.
防振バネ４００は、図３に示すように、中空部４０５を有するリング部４１０の外側を折り曲げて４本の弾性脚部４２０を設けたものである。弾性脚部４２０の先端にはプレス加工により凸部４３０が形成されている。弾性脚部４２０は差圧弁枠３２０の内周面に弾接して摺動する。そして、弾性脚部４２０は差圧弁枠３２０の内周面の軸心方向に延伸ものである。 As shown in FIG. 3, the anti-vibration spring 400 is provided with four elastic leg portions 420 by bending the outside of the ring portion 410 having the hollow portion 405. A convex portion 430 is formed at the tip of the elastic leg portion 420 by pressing. The elastic leg portion 420 slides in contact with the inner peripheral surface of the differential pressure valve frame 320. The elastic leg portion 420 extends in the axial direction of the inner peripheral surface of the differential pressure valve frame 320.
図４に差圧弁部３００の他の例を示す。
この差圧弁部３００にあっては、図２に示したストッパ３４０を省略してダイアフラム３５０の面に防振バネ４００を直接取り付けている。
防振バネ４００の構造は、図３に示したものと同様である。
FIG. 4 shows another example of the differential pressure valve unit 300.
In the differential pressure valve portion 300, the stopper 340 shown in FIG. 2 is omitted, and the anti-vibration spring 400 is directly attached to the surface of the diaphragm 350.
The structure of the anti-vibration spring 400 is the same as that shown in FIG.
図５に差圧弁部３００のさらに他の例を示す。
この差圧弁部３００にあっては、図４で示したダイアフラム３５０を省略して、差圧弁体３３０に対して防振バネ４００を直接に当接し、コイルバネ３７０で押圧する構成としている。
差圧弁体３３０の外周にシーリング３３６を嵌装してシールを達成している。防振バネ４００の構造は図３に示したものと同様である。
FIG. 5 shows still another example of the differential pressure valve unit 300.
In the differential pressure valve unit 300, the diaphragm 350 shown in FIG. 4 is omitted, and the vibration isolation spring 400 is directly brought into contact with the differential pressure valve body 330 and pressed by the coil spring 370.
Sealing is achieved by fitting a sealing 336 around the outer periphery of the differential pressure valve body 330. The structure of the anti-vibration spring 400 is the same as that shown in FIG.
図６に差圧弁部３００のさらに他の例を示す。
この差圧弁部３００にあっては、防振バネ５００の構造が先に示した防振バネ４００とは異なっている。その他の構成は先に説明した差圧弁部３００と同様であるので、同様の部材には同一の符号を付して詳細な説明は省略する。
FIG. 6 shows still another example of the differential pressure valve unit 300.
In this differential pressure valve portion 300, the structure of the vibration isolation spring 500 is different from that of the vibration isolation spring 400 described above. Since other configurations are the same as those of the differential pressure valve unit 300 described above, the same members are denoted by the same reference numerals, and detailed description thereof is omitted.
図７に示すように、防振バネ５００は中空部５０５を有するリング部５１０の外側を折り曲げて４本の弾性脚部５２０を設けている。弾性脚部５２０の先端にはプレス加工により凸部５３０が形成されている。
弾性脚部５２０は差圧弁枠３２０の内周面に弾接して摺動する。弾性脚部５２０は差圧弁枠３２０の内周面の周方向に延伸する。
防振バネ５００は図３に示す防振バネ４００に比べて軸線方向の長さ寸法を短くすることができる。
As shown in FIG. 7, the anti-vibration spring 500 is provided with four elastic leg portions 520 by bending the outside of the ring portion 510 having the hollow portion 505. A convex part 530 is formed at the tip of the elastic leg part 520 by pressing.
The elastic leg portion 520 slides in contact with the inner peripheral surface of the differential pressure valve frame 320. The elastic leg portion 520 extends in the circumferential direction of the inner peripheral surface of the differential pressure valve frame 320.
The anti-vibration spring 500 can have a shorter length in the axial direction than the anti-vibration spring 400 shown in FIG.
図８に本発明の差圧弁部３００のさらに他の例を示す。
この差圧弁部３００にあっては、図６で説明したように、防振バネ５００を直接に差圧弁体３３０にコイルバネ３７０を利用して当接する構造を備えている。
この構成により、差圧弁部３００の全長を短くすることができる。
FIG. 8 shows still another example of the differential pressure valve unit 300 of the present invention.
As described with reference to FIG. 6, the differential pressure valve unit 300 has a structure in which the vibration-proof spring 500 is brought into direct contact with the differential pressure valve body 330 using the coil spring 370.
With this configuration, the overall length of the differential pressure valve unit 300 can be shortened.
本発明によれば、ヒートポンプシステムに装備される差圧弁付電磁弁にあって、冷房サイクル中に冷媒が通過する差圧弁部の振動発生を防止することができ、騒音の低減を図る効果を有する。 ADVANTAGE OF THE INVENTION According to this invention, it is in the solenoid valve with a differential pressure valve with which a heat pump system is equipped, It can prevent the vibration generation | occurrence | production of the differential pressure | voltage valve part which a refrigerant | coolant passes during a cooling cycle, and has the effect which aims at reduction of a noise. .
１００ 差圧弁付電磁弁
１０２ 弁本体
１１０ 流入口
１１２ 上弁室
１１４ 主弁座
１１８ 分岐通路
２００ 電磁弁部
２１０ 主弁体
２１２ シール部材
２１６ 均圧孔
２１８ パイロット弁座
２３０ コイルバネ
２４０ 電磁コイル
２５０ パイプ
２６０ 吸引子
３００ 差圧弁部
３２０ 差圧弁枠
３３２ シール部材
３４０ ストッパ
３５０ ダイアフラム
３７０ コイルバネ
４００、５００ 防振バネ
４２０、５２０ 弾性脚部
４０５、５０５ 中空部
４１０、５１０ リング部
４３０、５３０ 凸部
100 Solenoid valve with differential pressure valve 102 Valve body 110 Inlet 112 Upper valve chamber 114 Main valve seat 118 Branch passage 200 Electromagnetic valve part 210 Main valve body 212 Seal member 216 Pressure equalizing hole 218 Pilot valve seat 230 Coil spring 240 Electromagnetic coil 250 Pipe 260 Suction element 300 Differential pressure valve part 320 Differential pressure valve frame 332 Seal member 340 Stopper 350 Diaphragm 370 Coil spring 400, 500 Anti-vibration spring 420, 520 Elastic leg part 405, 505 Hollow part 410, 510 Ring part 430, 530 Protrusion part
Claims (3)
上記差圧弁部は、上記下弁室の側面部において上記第１流出口と対向する位置に設けてあり、差圧弁座と、この差圧弁座に対向して配設される差圧弁体と、上記第１流出口内に配設される差圧弁枠と、この差圧弁枠内に配設されて上記差圧弁体を上記差圧弁座に向けて付勢するコイルバネと、上記差圧弁体の振動を防止する防振バネと、を備え、
上記防振バネは、上記差圧弁体に備え付けてあり、外側に突出した突起状の凸部が先端に形成され上記差圧弁枠内周面に摺動自在に弾接する複数の弾性脚部を備える
ことを特徴とする差圧弁付電磁弁。 An electromagnetic valve portion and a differential pressure valve portion are integrally provided in one valve body, and an inlet through which refrigerant from a heat exchanger flows into the valve body, and a first outlet through which the refrigerant flows out to an accumulator A second outlet from which the refrigerant flows out to the throttle, an upper valve chamber that communicates with the inlet and includes a main valve seat, a lower valve chamber that communicates from the upper valve chamber to the first outlet, A pilot-type main valve body that is arranged in the upper valve chamber and opens and closes the main valve seat by the electromagnetic valve section, and operates by the differential pressure between the compressor side pressure and the condenser side pressure when the main valve body is closed. and a differential pressure valve unit for introducing directly the refrigerant to the evaporator,
The differential pressure valve portion is provided at a position facing the first outlet in the side surface portion of the lower valve chamber, a differential pressure valve seat, and a differential pressure valve body disposed to face the differential pressure valve seat; A differential pressure valve frame disposed in the first outlet, a coil spring disposed in the differential pressure valve frame and biasing the differential pressure valve body toward the differential pressure valve seat, and vibration of the differential pressure valve body. Bei to give a, and anti-vibration spring to prevent,
The anti-vibration spring is provided in the differential pressure valve body, and includes a plurality of elastic legs that are formed with protruding protrusions protruding outward and are slidably elastically contacted with the inner peripheral surface of the differential pressure valve frame. A solenoid valve with a differential pressure valve.
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| JP2013022342A JP6111082B2 (en) | 2013-02-07 | 2013-02-07 | Solenoid valve with differential pressure valve |
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| JP2013022342A JP6111082B2 (en) | 2013-02-07 | 2013-02-07 | Solenoid valve with differential pressure valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2019039513A (en) * | 2017-08-25 | 2019-03-14 | 株式会社不二工機 | Pilot type control valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016089969A (en) | 2014-11-06 | 2016-05-23 | 株式会社テージーケー | solenoid valve |
| JP2017106517A (en) * | 2015-12-08 | 2017-06-15 | 株式会社Ｌｉｘｉｌ | Opening/closing valve device |
| JP6857964B2 (en) * | 2016-03-09 | 2021-04-14 | サンデン・オートモーティブクライメイトシステム株式会社 | Solenoid valve, refrigerating device using it, and air conditioner for vehicles using it |
| JP6943379B2 (en) * | 2016-08-09 | 2021-09-29 | 株式会社不二工機 | Expansion valve |
| JP6815655B2 (en) * | 2018-10-11 | 2021-01-20 | 株式会社不二工機 | solenoid valve |
| JP2022100845A (en) * | 2020-12-24 | 2022-07-06 | 株式会社不二工機 | Differential pressure valve and valve device having the same |
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| JP4283069B2 (en) * | 2003-04-24 | 2009-06-24 | 株式会社不二工機 | Compound valve |
| JP5127676B2 (en) * | 2008-11-20 | 2013-01-23 | 愛三工業株式会社 | Pressure control device |
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| JP2019039513A (en) * | 2017-08-25 | 2019-03-14 | 株式会社不二工機 | Pilot type control valve |
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