JPH11287354A - Three-way selector solenoid valve for pilot operation - Google Patents
Three-way selector solenoid valve for pilot operationInfo
- Publication number
- JPH11287354A JPH11287354A JP9111598A JP9111598A JPH11287354A JP H11287354 A JPH11287354 A JP H11287354A JP 9111598 A JP9111598 A JP 9111598A JP 9111598 A JP9111598 A JP 9111598A JP H11287354 A JPH11287354 A JP H11287354A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- downstream
- pressure
- pilot
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fluid-Driven Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、一つの上流側管
路を二つの下流側管路のうちの一方に選択的に連通させ
るように切り換えるパイロット作動の三方向切換電磁弁
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pilot-operated three-way switching solenoid valve for selectively switching one upstream pipe to one of two downstream pipes.
【０００２】[0002]
【従来の技術】パイロット作動の電磁弁は、非常に小型
で消費電力の少ないソレノイドによって弁を開閉駆動す
ることができる長所があるので、流体管路の開通／閉塞
の切り換えに広く用いられている。2. Description of the Related Art A pilot-operated solenoid valve has the advantage that the valve can be opened and closed by a very small and low power consumption solenoid, and is therefore widely used for switching between opening and closing of a fluid line. .
【０００３】そのようなパイロット作動電磁弁は、一般
に、弁部付近の流体圧を上流側管路内で受ける受圧面の
背面部分に調圧室有する弁駆動体を設けると共に、その
調圧室と下流側管路内とを連通させるパイロット通路
と、調圧室と上流側管路内とをパイロット通路より小さ
な断面積の流路で常時連通させるリーク路とを設け、ソ
レノイドによってパイロット孔を開通／閉塞させること
により弁駆動体を動作させて弁の開閉を行っている。[0003] Such a pilot-operated solenoid valve generally has a valve driving body having a pressure regulating chamber on the back side of a pressure receiving surface which receives fluid pressure near a valve portion in an upstream pipe, and the pressure regulating chamber and the pressure regulating chamber are connected to each other. A pilot passage for communicating with the downstream pipe and a leak path for constantly communicating the pressure regulating chamber and the inside of the upstream pipe with a flow passage having a smaller cross-sectional area than the pilot passage are provided, and the pilot hole is opened / closed by the solenoid. By closing the valve, the valve driver is operated to open and close the valve.
【０００４】[0004]
【発明が解決しようとする課題】一つの上流側管路を二
つの下流側管路のうちの一方に選択的に連通させるよう
に切り換える三方向切換弁も、電磁駆動させる場合には
パイロット作動させる構造を採用することができる。A three-way switching valve for selectively switching one upstream pipe to one of two downstream pipes is also operated by a pilot when electromagnetically driven. A structure can be adopted.
【０００５】しかし、三方向切換弁を一つのソレノイド
でパイロット作動させようとすると二つの弁体が必要で
あり、一方の弁体は前述のパイロット作動電磁弁と同じ
ように配置することができるが、他方の弁体は開閉状態
を逆にしなければならないので、下流側管路側から上流
側に向けて配置されることになる。[0005] However, if the three-way switching valve is to be pilot operated by one solenoid, two valve elements are required, and one valve element can be arranged in the same manner as the above-mentioned pilot operated solenoid valve. On the other hand, the other valve element must be reversed in the open / close state, so that the other valve element is disposed from the downstream pipe side toward the upstream side.
【０００６】すると、第２の弁体を閉じる方向に作用す
る流体圧はその下流側の圧力の低い流体の圧力なので、
閉じ状態が不安定で流体圧の変動等により漏れが発生し
易くなってしまう。Then, since the fluid pressure acting in the direction to close the second valve body is the pressure of the fluid having a low pressure downstream thereof,
The closed state is unstable, and leakage is likely to occur due to fluctuations in fluid pressure and the like.
【０００７】そのため、従来のパイロット作動の三方向
切換電磁弁は、パイロット作動の二方向電磁弁を二つ組
み合わせて、２個のソレノイドを連動させて駆動してお
り、装置が大型になると共にコスト高になっていた。For this reason, the conventional pilot-operated three-way switching solenoid valve combines two pilot-operated two-way solenoid valves and drives two solenoids in conjunction with each other. Was high.
【０００８】そこで本発明は、一個のソレノイドで、一
つの上流側管路を二つの下流側管路のうちの一方に選択
的に連通させるように切り換えることができるパイロッ
ト作動の三方向切換電磁弁を提供することを目的とす
る。Accordingly, the present invention provides a pilot-operated three-way solenoid valve capable of selectively switching one upstream pipe to one of two downstream pipes with one solenoid. The purpose is to provide.
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成するた
め、本発明のパイロット作動の三方向切換電磁弁は、流
体が送り込まれてくる上流側管路と、上記流体が送り出
される第１と第２の下流側管路と、上記上流側管路と上
記第１の下流側管路との間を開通／閉塞自在に配置され
た第１の弁部と、上記上流側管路と上記第２の下流側管
路との間を開通／閉塞自在に配置された第２の弁部と、
上記第１の下流側管路の上記第１の弁部より下流位置に
配置された定差圧弁と、上記第１の弁部付近の流体圧を
上記上流側管路内で受ける受圧面の背面部分に調圧室を
有していて上記第１と第２の弁部の一方を閉じて他方を
開くように上記両弁部の弁体に連結された弁駆動体と、
上記定差圧弁より下流の上記下流側管路内と上記調圧室
内とを連通させるパイロット通路と、上記上流側管路内
と上記調圧室内とを上記パイロット通路より小さな断面
積の流路で常時連通させるリーク路と、通電の有無によ
って上記パイロット孔を開通／閉塞して、上記上流側管
路に対する上記第１の下流側管路と上記第２の下流側管
路の連通状態をパイロット作動によって切り換えるソレ
ノイドとを設けたことを特徴とする。In order to achieve the above object, a pilot-operated three-way switching solenoid valve according to the present invention comprises an upstream pipe through which fluid is fed, and a first pipe through which the fluid is fed. A second downstream pipe, a first valve portion arranged to freely open / close between the upstream pipe and the first downstream pipe, and the upstream pipe and the first pipe. A second valve portion disposed so as to be openable / closable between the second valve portion and the second downstream pipe line;
A constant pressure differential valve disposed downstream of the first valve portion in the first downstream line, and a back surface of a pressure receiving surface for receiving a fluid pressure near the first valve portion in the upstream side line; A valve driver having a pressure regulating chamber in a portion thereof and connected to the valve bodies of the first and second valve portions so as to close one of the first and second valve portions and open the other;
A pilot passage communicating between the pressure regulating chamber and the downstream pipe downstream of the constant pressure differential valve, and a flow passage having a smaller cross-sectional area than the pilot passage between the upstream pipe and the pressure regulating chamber. The pilot hole is opened / closed depending on the presence / absence of energization with the leak path that is always in communication, and the state of communication between the first downstream pipe and the second downstream pipe with the upstream pipe is operated by a pilot. And a solenoid which is switched by the switch.
【００１０】なお、上記第１の弁部の弁体が上記定差圧
弁の弁体により兼用されていて、上記第２の弁部が開か
れた状態では上記弁駆動体が上記兼用弁体を弁座に押し
付けて上記第１の下流側管路を閉じ、上記第２の弁部が
閉じられた状態では上記弁駆動体が上記兼用弁体から退
避した状態になるようにしてもよい。The valve element of the first valve section is also used as the valve element of the constant differential pressure valve, and when the second valve section is open, the valve driving element switches the shared valve element. The first downstream pipe may be closed by being pressed against a valve seat, and the valve drive may be retracted from the dual-purpose valve when the second valve is closed.
【００１１】[0011]
【発明の実施の形態】図面を参照して本発明の実施の形
態を説明する。図７は、本発明の三方向切換電磁弁８が
配置された冷凍サイクルを示しており、例えば自動車の
空調（カーエアコン）に用いられるものである。Embodiments of the present invention will be described with reference to the drawings. FIG. 7 shows a refrigeration cycle in which the three-way switching electromagnetic valve 8 of the present invention is arranged, and is used for, for example, air conditioning (car air conditioner) of an automobile.
【００１２】この冷凍サイクルにおいては、圧縮機１か
ら送り出された高圧冷媒ガスを、車室外の凝縮器２を通
さずに、車室内の蒸発器４に送り込ませるバイパス管路
１１が併設されており、蒸発器４で顕熱を奪う熱交換を
行わせて、それを補助暖房として用いることができる。In this refrigeration cycle, a bypass pipe 11 is provided in which the high-pressure refrigerant gas sent from the compressor 1 is sent to the evaporator 4 in the vehicle compartment without passing through the condenser 2 outside the vehicle compartment. Then, the heat exchange for removing sensible heat is performed in the evaporator 4, and the heat exchange can be used as auxiliary heating.
【００１３】３は膨張弁、７は逆止弁、８は、圧縮機１
から送り出される高圧冷媒が通る上流側管路１０を、バ
イパス管路１１（第１の下流側管路）に連通させるか、
凝縮器２に向かう管路１２（第２の下流側管路）に連通
させるかの切り換えを行うパイロット作動の三方向切換
電磁弁８であり、バイパス管路１１との間には膨張弁と
して作用する定差圧弁９が介挿されている。なお、冷媒
を一時的に貯留しておくためにリキッドタンク又はアキ
ュムレータが接続されるが、その図示は省略されてい
る。3 is an expansion valve, 7 is a check valve, 8 is a compressor 1
The upstream pipe 10 through which the high-pressure refrigerant sent from the tank passes through the bypass pipe 11 (first downstream pipe),
A pilot-operated three-way switching solenoid valve 8 for switching whether to communicate with a pipe 12 (a second downstream pipe) toward the condenser 2, and acts as an expansion valve between itself and the bypass pipe 11. A constant differential pressure valve 9 is inserted. Note that a liquid tank or an accumulator is connected to temporarily store the refrigerant, but illustration thereof is omitted.
【００１４】図１は、三方向切換電磁弁８を示してお
り、定差圧弁９が一体に組み込まれていて、圧縮機１か
ら送り出される高圧冷媒が通る上流側管路１０を、第１
の下流側管路１１（バイパス管路）に連通させるか、第
２の下流側管路１２（凝縮器２に向かう管路）に連通さ
せるかの切り換えを、一個のソレノイド４０で行えるよ
うになっている。FIG. 1 shows a three-way switching solenoid valve 8, in which a constant differential pressure valve 9 is integrated, and an upstream pipe 10 through which high-pressure refrigerant sent from the compressor 1 passes is connected to a first pipe 10.
Can be switched by a single solenoid 40 between communication with the downstream pipe 11 (bypass pipe) and communication with the second downstream pipe 12 (pipe toward the condenser 2). ing.
【００１５】三方向切換電磁弁８の本体ブロック２０に
は、第１の下流側管路１１と第２の下流側管路１２とが
上流側管路１０から二つに別れて形成されており、第１
の下流側管路１１を開通／閉塞するための第１の弁部２
１と、第２の下流側管路１２を開通／閉塞するための第
２の弁部２２とが設けられている。In the main body block 20 of the three-way switching electromagnetic valve 8, a first downstream pipe 11 and a second downstream pipe 12 are formed separately from the upstream pipe 10 in two. , First
1st valve part 2 for opening / closing the downstream pipeline 11 of
1 and a second valve portion 22 for opening / closing the second downstream pipe 12.
【００１６】そして、第１の弁部２１の第１の弁体２１
ａは第１の弁座２１ｂに対して上流側から対向して配置
され、第２の弁部２２の第２の弁体２２ａは第２の弁座
２２ｂに対して下流側から対向して配置されている。The first valve body 21 of the first valve portion 21
a is disposed to face the first valve seat 21b from the upstream side, and the second valve body 22a of the second valve portion 22 is disposed to face the second valve seat 22b from the downstream side. Have been.
【００１７】第１の弁体２１ａが取り付けられたピスト
ン状の弁駆動筒２３ａは、上流側管路１０との連通部に
形成されたシリンダ状部２４内に進退自在に嵌合してお
り、その嵌合面にはシール用のＯリング２５が装着され
ている。A piston-shaped valve driving cylinder 23a to which the first valve body 21a is attached is fitted in a cylindrical part 24 formed in a communication part with the upstream pipe 10 so as to be able to advance and retreat. An O-ring 25 for sealing is mounted on the fitting surface.
【００１８】弁駆動筒２３ａに一体的に連結された弁駆
動ロッド２３ｂは、第１の弁座２１ｂ内と第２の弁座２
２ｂ内とを貫通して、その先端に第２の弁体２２ａを保
持する弁受け部材２７が取り付けられており、一体に連
結された弁駆動筒２３ａと弁駆動ロッド２３ｂとによっ
て、第１の弁体２１ａと第２の弁体２２ａとを駆動する
弁駆動体が構成されている。The valve driving rod 23b integrally connected to the valve driving cylinder 23a is connected to the inside of the first valve seat 21b and the second valve seat 2b.
2b, a valve receiving member 27 for holding the second valve body 22a is attached to the distal end thereof, and the first valve driving cylinder 23a and the valve driving rod 23b integrally connected to the first valve driving member 23a. A valve driver that drives the valve 21a and the second valve 22a is configured.
【００１９】定差圧弁９は、第１の弁座２１ｂに隣接し
てそのすぐ下流部分に配置された弁座９ｂに向かって、
弁体９ａが下流側から圧縮コイルスプリング９ｃにより
常に一定の付勢力で付勢されて構成されている。The constant differential pressure valve 9 moves toward a valve seat 9b disposed adjacent to and immediately downstream of the first valve seat 21b.
The valve element 9a is always urged by a compression coil spring 9c from the downstream side with a constant urging force.
【００２０】弁駆動筒２３ａは、第１の弁体２１ａが取
り付けられた側の面が、第１の弁座２１ｂのすぐ上流部
分の流体圧を受ける受圧面になっており、その受圧面の
背面部分に調圧室２８が形成されている。The valve drive cylinder 23a has a surface on the side where the first valve body 21a is mounted as a pressure receiving surface for receiving fluid pressure immediately upstream of the first valve seat 21b. A pressure regulation chamber 28 is formed on the back surface.
【００２１】そして、定差圧弁９より下流の第１の下流
側管路１１内と調圧室２８内とを連通させるパイロット
通路２９が弁駆動ロッド２３ｂに形成されており、パイ
ロット通路２９より小さな断面積で上流側管路１０内と
調圧室２８内とを連通させるリーク孔３０が弁駆動筒２
３ａに形成されている。A pilot passage 29 for communicating the inside of the first downstream pipe 11 downstream of the constant pressure differential valve 9 with the inside of the pressure regulating chamber 28 is formed in the valve drive rod 23b, and is smaller than the pilot passage 29. A leak hole 30 for communicating the inside of the upstream pipe 10 and the inside of the pressure regulating chamber 28 with a sectional area is formed in the valve driving cylinder 2.
3a.
【００２２】ソレノイド４０には固定鉄芯４１と可動鉄
芯４２との間に弱い圧縮コイルスプリング４３が介装さ
れていて、電磁コイル４４に通電されていない時には、
可動鉄芯４２に取り付けられたパイロット弁体４５が圧
縮コイルスプリング４３の付勢力によって弁駆動ロッド
２３ｂの端面に開口するパイロット通路２９を塞ぐ。即
ち、ノーマルクローズタイプである。The solenoid 40 has a weak compression coil spring 43 interposed between the fixed iron core 41 and the movable iron core 42, and when the electromagnetic coil 44 is not energized,
The pilot valve body 45 attached to the movable iron core 42 closes the pilot passage 29 opened on the end face of the valve drive rod 23b by the urging force of the compression coil spring 43. That is, it is a normally closed type.
【００２３】固定鉄芯４１は、電磁コイル４４への通電
によって移動するものではないが、中程度の強さの圧縮
コイルスプリング４７によって背後から可動鉄芯４２側
に向かって付勢され、軸線方向に進退自在にスリーブ４
６内に嵌挿されて、弁駆動筒２３ａとの間の間隔がロッ
ド４８によって一定に維持されており、弁駆動筒２３ａ
の移動に追随して移動する。The fixed iron core 41 is not moved by energizing the electromagnetic coil 44, but is urged toward the movable iron core 42 from behind by a compression coil spring 47 having a medium strength, and is moved in the axial direction. Sleeve 4 to move freely to and from
6, the distance between the valve driving cylinder 23a and the valve driving cylinder 23a is maintained constant by the rod 48.
Move following the movement of.
【００２４】このように構成された実施の形態のパイロ
ット作動の三方向切換電磁弁は、電磁コイル４４に通電
されていない状態では、図１に示されるように、パイロ
ット通路２９がパイロット弁体４５で塞がれている。When the solenoid coil 44 is not energized, the pilot passage three-way switching solenoid valve of the embodiment constructed as described above has the pilot passage 29 connected to the pilot valve body 45 as shown in FIG. It is closed by.
【００２５】したがって、リーク孔３０を介して上流側
管路１０と連通している調圧室２８内は上流側管路１０
内と同じ高圧になり、第１の弁座２１ｂの下流側及び第
２の弁座２２ｂの下流側の低圧力との差圧によって弁駆
動筒２３ａが押し下げられ、第１の弁体２１ａが第１の
弁座２１ｂに当接して第１の弁部２１が閉じ、第２の弁
体２２ａが第２の弁座２２ｂから離れて第２の弁部２２
が開く。Therefore, the inside of the pressure regulation chamber 28 communicating with the upstream pipe 10 through the leak hole 30 is
The pressure becomes the same as the inside pressure, and the pressure difference between the low pressure on the downstream side of the first valve seat 21b and the low pressure on the downstream side of the second valve seat 22b pushes down the valve driving cylinder 23a, and the first valve body 21a The first valve portion 21 is closed by contacting the first valve seat 21b, and the second valve body 22a is separated from the second valve seat 22b and the second valve portion 22 is closed.
Opens.
【００２６】ソレノイド４０の電磁コイル４４に通電す
ると、図２に示されるように、可動鉄芯４２が固定鉄芯
４１に引き寄せられてパイロット弁体４５がパイロット
通路２９の開口から離れ、調圧室２８内がパイロット通
路２９を介して定差圧弁９より下流の第１の下流側管路
１１内と連通して低圧になる。When the electromagnetic coil 44 of the solenoid 40 is energized, as shown in FIG. 2, the movable iron core 42 is attracted to the fixed iron core 41, and the pilot valve element 45 is separated from the opening of the pilot passage 29, and the pressure regulating chamber is adjusted. The inside of the tube 28 communicates with the inside of the first downstream pipe 11 downstream of the constant pressure differential valve 9 via the pilot passage 29 to be at a low pressure.
【００２７】すると、調圧室２８内の圧力に対する上流
側管路１０内と第２の下流側管路１２内との差圧によっ
て弁駆動筒２３ａが上昇し、それによってロッド４８を
介して押される固定鉄芯４１が圧縮コイルスプリング４
７を圧縮させる方向に移動し、可動鉄芯４２も固定鉄芯
４１に吸着された状態のまま移動する。Then, due to a pressure difference between the upstream pipe 10 and the second downstream pipe 12 with respect to the pressure in the pressure regulating chamber 28, the valve driving cylinder 23 a rises, and is pushed through the rod 48. The fixed iron core 41 is compressed coil spring 4
7, the movable iron core 42 also moves while being attracted to the fixed iron core 41.
【００２８】その結果、第１の弁体２１ａが第１の弁座
２１ｂから離れて第１の弁部２１が開き、第２の弁体２
２ａが第２の弁座２２ｂに当接して第２の弁部２２が閉
じる。そしてこの状態は、調圧室２８内が第２の下流側
管路１２内よりずっと低い圧力になっているので安定し
ている。As a result, the first valve element 21a is separated from the first valve seat 21b, the first valve portion 21 is opened, and the second valve element 2a is opened.
2a comes into contact with the second valve seat 22b, and the second valve portion 22 closes. This state is stable because the pressure in the pressure regulating chamber 28 is much lower than that in the second downstream pipe 12.
【００２９】そして、弁体９ａの上流側と下流側の差圧
が圧縮コイルスプリング９ｃの付勢力より大きくなる
と、図３に示されるように定差圧弁９が開いて、上流側
と下流側との差圧を一定に維持する。When the pressure difference between the upstream side and the downstream side of the valve element 9a becomes larger than the urging force of the compression coil spring 9c, the constant differential pressure valve 9 opens as shown in FIG. Is maintained constant.
【００３０】図４ないし図６は、本発明の第２の実施の
形態のパイロット作動の三方向切換電磁弁を示してお
り、第１の弁部２１の第１の弁体２１ａを定差圧弁９の
弁体９ａによって兼用したものである。FIGS. 4 to 6 show a pilot-operated three-way switching solenoid valve according to a second embodiment of the present invention, in which a first valve element 21a of a first valve portion 21 is connected to a constant differential pressure valve. 9 is also used by the valve element 9a.
【００３１】兼用弁体９ａが取り付けられた弁受け部材
９ｄは、第２の弁体２２ａとは逆向きに配置されて弁駆
動ロッド２３ｂの中間部分に軸線方向にスライド自在に
嵌合して、第１の下流側管路１１中において下流側から
弁座９ｂに向かって圧縮コイルスプリング９ｃで付勢さ
れた状態に配置されており、圧縮コイルスプリング９ｃ
を押し縮めれば弁受け部材９ｄが弁駆動ロッド２３ｂの
途中に形成された段部２３ｃに当接する。その他の構成
は第１の実施の形態と同じである。The valve receiving member 9d to which the dual-purpose valve body 9a is attached is disposed in the opposite direction to the second valve body 22a, and is fitted slidably in the axial direction on an intermediate portion of the valve drive rod 23b. The compression coil spring 9c is disposed in the first downstream pipe 11 so as to be biased by the compression coil spring 9c from the downstream side toward the valve seat 9b.
Is pressed, the valve receiving member 9d comes into contact with the step portion 23c formed in the middle of the valve driving rod 23b. Other configurations are the same as those of the first embodiment.
【００３２】このように構成された第２の実施の形態の
三方向切換電磁弁は、ソレノイド４０の電磁コイル４４
に通電されていないときは、図４に示されるように、第
１の実施の形態と同様にしてパイロット通路２９がパイ
ロット弁体４５で塞がれている。The three-way switching solenoid valve according to the second embodiment having the above-described structure is similar to the solenoid coil 44 of the solenoid 40.
When the power is not supplied to the pilot passage 29, the pilot passage 29 is closed by the pilot valve element 45 as in the first embodiment, as shown in FIG.
【００３３】したがって、リーク孔３０を介して上流側
管路１０と連通している調圧室２８内は上流側管路１０
内と同じ高圧になり、第１の弁座２１ｂの下流側及び第
２の弁座２２ｂの下流側の低圧力との差圧によって弁駆
動筒２３ａが押し下げられる。Therefore, the inside of the pressure regulating chamber 28 communicating with the upstream pipe 10 through the leak hole 30 is
The pressure becomes the same as the inside pressure, and the valve drive cylinder 23a is pushed down by the differential pressure between the low pressure on the downstream side of the first valve seat 21b and the low pressure on the downstream side of the second valve seat 22b.
【００３４】その結果、第１の弁体を兼用する兼用弁体
９ａが弁駆動ロッド２３ｂの段部２３ｃによって弁座９
ｂに押し付けられて、第１の弁部２１を兼用する定差圧
弁９が閉じ、第２の弁体２２ａが第２の弁座２２ｂから
離れて第２の弁部２２が開く。As a result, the dual-purpose valve element 9a, which also serves as the first valve element, is moved by the stepped portion 23c of the valve drive rod 23b.
b, the constant differential pressure valve 9 also serving as the first valve portion 21 is closed, the second valve body 22a is separated from the second valve seat 22b, and the second valve portion 22 is opened.
【００３５】ソレノイド４０の電磁コイル４４に通電す
ると、図５に示されるように、可動鉄芯４２が固定鉄芯
４１に引き寄せられてパイロット弁体４５がパイロット
通路２９の開口から離れ、調圧室２８内がパイロット通
路２９を介して定差圧弁９より下流の第１の下流側管路
１１内と連通して低圧になる。When the electromagnetic coil 44 of the solenoid 40 is energized, the movable iron core 42 is drawn to the fixed iron core 41, as shown in FIG. The inside of the tube 28 communicates with the inside of the first downstream pipe 11 downstream of the constant pressure differential valve 9 via the pilot passage 29 to be at a low pressure.
【００３６】すると、調圧室２８内の圧力に対する上流
側管路１０内と第２の下流側管路１２内との差圧によっ
て弁駆動筒２３ａが上昇し、それによってロッド４８を
介して押される固定鉄芯４１が圧縮コイルスプリング４
７を圧縮させる方向に移動し、可動鉄芯４２も固定鉄芯
４１に吸着された状態のまま移動する。Then, due to the pressure difference between the upstream pipe 10 and the second downstream pipe 12 with respect to the pressure in the pressure regulating chamber 28, the valve driving cylinder 23 a rises, and is pushed through the rod 48. The fixed iron core 41 is compressed coil spring 4
7, the movable iron core 42 also moves while being attracted to the fixed iron core 41.
【００３７】その結果、弁駆動ロッド２３ｂの段部２３
ｃが弁受け部材９ｄから退避して定差圧弁９が開き得る
状態になり、第２の弁体２２ａが第２の弁座２２ｂに当
接して第２の弁部２２が閉じる。この状態は、調圧室２
８内が第２の下流側管路１２内よりずっと低い圧力にな
っているので安定している。As a result, the step 23 of the valve drive rod 23b
c is retracted from the valve receiving member 9d so that the constant differential pressure valve 9 can be opened, the second valve body 22a comes into contact with the second valve seat 22b, and the second valve portion 22 closes. In this state, the pressure control chamber 2
Since the pressure in the inside 8 is much lower than that in the second downstream pipe 12, it is stable.
【００３８】そして、兼用弁体９ａの上流側と下流側の
差圧が圧縮コイルスプリング９ｃの付勢力より大きくな
ると、図６に示されるように定差圧弁９が開いて、上流
側と下流側との差圧を一定に維持する。When the pressure difference between the upstream side and the downstream side of the dual-purpose valve body 9a becomes larger than the urging force of the compression coil spring 9c, the constant differential pressure valve 9 opens as shown in FIG. Is maintained constant.
【００３９】[0039]
【発明の効果】本発明によれば、ソレノイドによってパ
イロット通路を閉じた状態では、リーク路を介して上流
側管路内と連通している調圧室内が上流側管路内と同じ
高圧になることにより作用する差圧で弁駆動体が動作し
て、第１の弁部が閉じ、第２の弁部が開いた状態で安定
する。According to the present invention, when the pilot passage is closed by the solenoid, the pressure in the pressure regulating chamber communicating with the inside of the upstream pipe through the leak passage becomes the same high as that in the upstream pipe. As a result, the valve driver operates with the differential pressure that acts, stabilizing the first valve unit in a closed state and the second valve unit in an open state.
【００４０】ソレノイドによってパイロット通路を開い
た状態では、パイロット通路を介して第１の下流側管路
内と連通する調圧室内が低圧になることにより作用する
差圧で弁駆動体が動作して、第１の弁部が開き、第２の
弁部が閉じた状態になる。その時、定差圧弁より下流側
で第１の下流側管路内と連通する調圧室内は第２の下流
側管路内よりずっと低圧になるので、弁駆動体の状態が
非常に安定していて、流体圧の変動等があっても弁の状
態に影響しない。In a state where the pilot passage is opened by the solenoid, the valve driving body operates by a differential pressure which acts due to a low pressure in the pressure regulation chamber communicating with the first downstream pipe line via the pilot passage. , The first valve portion is opened and the second valve portion is closed. At that time, the pressure in the pressure regulating chamber downstream of the constant differential pressure valve and communicating with the inside of the first downstream line becomes much lower than in the second downstream line, so that the state of the valve driving body is very stable. Therefore, even if the fluid pressure fluctuates, the state of the valve is not affected.
【図１】本発明の第１の実施の形態のソレノイドがオフ
の状態のパイロット作動の三方向切換電磁弁の縦断面図
である。FIG. 1 is a longitudinal sectional view of a pilot-operated three-way switching solenoid valve according to a first embodiment of the present invention with a solenoid turned off.
【図２】本発明の第１の実施の形態のソレノイドがオン
の状態で定差圧弁が閉じている状態の縦断面図である。FIG. 2 is a longitudinal sectional view showing a state in which a solenoid according to the first embodiment of the present invention is on and a constant differential pressure valve is closed.
【図３】本発明の第１の実施の形態のソレノイドがオン
の状態で定差圧弁が開いた状態のパイロット作動の三方
向切換電磁弁の縦断面図である。FIG. 3 is a longitudinal sectional view of a pilot-operated three-way switching solenoid valve according to the first embodiment of the present invention in a state where a solenoid is on and a constant differential pressure valve is open.
【図４】本発明の第２の実施の形態のソレノイドがオフ
の状態のパイロット作動の三方向切換電磁弁の縦断面図
である。FIG. 4 is a vertical cross-sectional view of a pilot-operated three-way switching solenoid valve according to a second embodiment of the present invention with a solenoid turned off.
【図５】本発明の第２の実施の形態のソレノイドがオン
の状態で定差圧弁が閉じている状態の縦断面図である。FIG. 5 is a longitudinal sectional view showing a state where a constant differential pressure valve is closed while a solenoid is on according to a second embodiment of the present invention.
【図６】本発明の第２の実施の形態のソレノイドがオン
の状態で定差圧弁が開いた状態のパイロット作動の三方
向切換電磁弁の縦断面図である。FIG. 6 is a longitudinal sectional view of a pilot-operated three-way switching solenoid valve according to a second embodiment of the present invention in a state where a solenoid is on and a constant differential pressure valve is open.
【図７】本発明のパイロット作動の三方向切換電磁弁が
用いられる冷凍サイクルの回路図である。FIG. 7 is a circuit diagram of a refrigeration cycle in which the pilot operated three-way switching solenoid valve of the present invention is used.
８ 三方向切換電磁弁 ９ 定差圧弁 １０ 上流側管路 １１ 第１の下流側管路 １２ 第２の下流側管路 ２１ 第１の弁部 ２２ 第２の弁部 ２３ａ 弁駆動筒 ２３ｂ 弁駆動ロッド ２８ 調圧室 ２９ パイロット通路 ３０ リーク孔 ４０ ソレノイド ４２ 可動鉄芯 ４５ パイロット弁体 Reference Signs List 8 three-way switching solenoid valve 9 constant differential pressure valve 10 upstream pipe 11 first downstream pipe 12 second downstream pipe 21 first valve section 22 second valve section 23a valve drive cylinder 23b valve drive Rod 28 Pressure regulating chamber 29 Pilot passage 30 Leak hole 40 Solenoid 42 Movable iron core 45 Pilot valve
Claims (2)
閉塞自在に配置された第１の弁部と、 上記上流側管路と上記第２の下流側管路との間を開通／
閉塞自在に配置された第２の弁部と、 上記第１の下流側管路の上記第１の弁部より下流位置に
配置された定差圧弁と、 上記第１の弁部付近の流体圧を上記上流側管路内で受け
る受圧面の背面部分に調圧室を有していて上記第１と第
２の弁部の一方を閉じて他方を開くように上記両弁部の
弁体に連結された弁駆動体と、 上記定差圧弁より下流の上記下流側管路内と上記調圧室
内とを連通させるパイロット通路と、 上記上流側管路内と上記調圧室内とを上記パイロット通
路より小さな断面積の流路で常時連通させるリーク路
と、 通電の有無によって上記パイロット孔を開通／閉塞し
て、上記上流側管路に対する上記第１の下流側管路と上
記第２の下流側管路の連通状態をパイロット作動によっ
て切り換えるソレノイドとを設けたことを特徴とするパ
イロット作動の三方向切換電磁弁。1. An upstream pipeline into which a fluid is fed, first and second downstream pipelines through which the fluid is sent, and an upstream pipeline and a first downstream pipeline. Opening interval /
Opening / closing a first valve portion disposed so as to be able to close and between the upstream pipeline and the second downstream pipeline.
A second valve portion disposed so as to be freely closed; a constant differential pressure valve disposed downstream of the first valve portion in the first downstream pipe; and a fluid pressure in the vicinity of the first valve portion. A pressure regulating chamber on the back side of the pressure receiving surface which receives the pressure in the upstream side pipeline, and closes one of the first and second valve portions and opens the other so that the valve bodies of both valve portions are opened. A connected valve driver, a pilot passage communicating between the pressure regulation chamber and the downstream pipe downstream of the constant pressure differential valve, and a pilot passage between the upstream pipe and the pressure regulation chamber. A leak path that is always in communication with a flow path having a smaller cross-sectional area; and a pilot hole that is opened / closed depending on the presence or absence of energization, and the first downstream pipe and the second downstream with respect to the upstream pipe. A solenoid that switches the communication state of the pipeline by pilot operation is provided. Three-way changeover valve of pilot operated that.
体により兼用されていて、上記第２の弁部が開かれた状
態では上記弁駆動体が上記兼用弁体を弁座に押し付けて
上記第１の下流側管路を閉じ、上記第２の弁部が閉じら
れた状態では上記弁駆動体が上記兼用弁体から退避した
状態になる請求項１記載のパイロット作動の三方向切換
電磁弁。2. The valve element of the first valve section is also used by the valve element of the constant differential pressure valve, and in a state where the second valve section is open, the valve driving body switches the shared valve element. 2. The pilot operation according to claim 1, wherein the valve drive body is retracted from the dual-purpose valve body when the first downstream pipe is closed by pressing against the valve seat and the second valve portion is closed. Three-way switching solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09111598A JP3844321B2 (en) | 1998-04-03 | 1998-04-03 | Pilot operated three-way switching solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09111598A JP3844321B2 (en) | 1998-04-03 | 1998-04-03 | Pilot operated three-way switching solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11287354A true JPH11287354A (en) | 1999-10-19 |
| JP3844321B2 JP3844321B2 (en) | 2006-11-08 |
Family
ID=14017529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09111598A Expired - Fee Related JP3844321B2 (en) | 1998-04-03 | 1998-04-03 | Pilot operated three-way switching solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3844321B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1046844A3 (en) * | 1999-04-20 | 2001-08-22 | Aljosa Rovan | 3-way control valve |
| JP2011033126A (en) * | 2009-07-31 | 2011-02-17 | Fuji Koki Corp | Three-way selector valve |
| JP2011220448A (en) * | 2010-04-09 | 2011-11-04 | Tgk Co Ltd | Control valve |
| WO2012042745A1 (en) | 2010-09-30 | 2012-04-05 | 株式会社テージーケー | Control valve |
| KR20130035982A (en) | 2011-09-30 | 2013-04-09 | 가부시키가이샤 테지케 | Control valve |
| EP2667119A2 (en) | 2012-05-25 | 2013-11-27 | TGK CO., Ltd. | Control valve |
| EP2700853A1 (en) * | 2011-04-20 | 2014-02-26 | TGK CO., Ltd. | Control valve |
| KR20150095210A (en) | 2014-02-12 | 2015-08-20 | 가부시키가이샤 테지케 | Control valve and lock preventing method for valve operating |
| KR20160074449A (en) | 2014-02-12 | 2016-06-28 | 가부시키가이샤 테지케 | Control valve and lock preventing method for valve operating |
| CN107023691A (en) * | 2016-01-22 | 2017-08-08 | 株式会社不二工机 | Flow channel switching valve |
| WO2021145705A1 (en) * | 2020-01-17 | 2021-07-22 | Hanon Systems | Device for regulating a throughflow and distributing a fluid in a fluid circuit |
| CN116454321A (en) * | 2023-06-13 | 2023-07-18 | 国家电投集团氢能科技发展有限公司 | Fuel cell anode drainage device and fuel cell system |
-
1998
- 1998-04-03 JP JP09111598A patent/JP3844321B2/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1046844A3 (en) * | 1999-04-20 | 2001-08-22 | Aljosa Rovan | 3-way control valve |
| JP2011033126A (en) * | 2009-07-31 | 2011-02-17 | Fuji Koki Corp | Three-way selector valve |
| JP2011220448A (en) * | 2010-04-09 | 2011-11-04 | Tgk Co Ltd | Control valve |
| CN103124873A (en) * | 2010-09-30 | 2013-05-29 | 株式会社Tgk | Control valve |
| WO2012042745A1 (en) | 2010-09-30 | 2012-04-05 | 株式会社テージーケー | Control valve |
| JP2012077787A (en) * | 2010-09-30 | 2012-04-19 | Tgk Co Ltd | Control valve |
| EP2700853A1 (en) * | 2011-04-20 | 2014-02-26 | TGK CO., Ltd. | Control valve |
| EP2700853A4 (en) * | 2011-04-20 | 2014-11-05 | Tgk Co Ltd | Control valve |
| KR20130035982A (en) | 2011-09-30 | 2013-04-09 | 가부시키가이샤 테지케 | Control valve |
| US9285054B2 (en) | 2011-09-30 | 2016-03-15 | Tgk Co., Ltd. | Control valve |
| EP2667119A2 (en) | 2012-05-25 | 2013-11-27 | TGK CO., Ltd. | Control valve |
| US9285046B2 (en) | 2012-05-25 | 2016-03-15 | Tgk Co., Ltd | Control valve |
| KR20150095210A (en) | 2014-02-12 | 2015-08-20 | 가부시키가이샤 테지케 | Control valve and lock preventing method for valve operating |
| KR20160074449A (en) | 2014-02-12 | 2016-06-28 | 가부시키가이샤 테지케 | Control valve and lock preventing method for valve operating |
| CN107023691A (en) * | 2016-01-22 | 2017-08-08 | 株式会社不二工机 | Flow channel switching valve |
| WO2021145705A1 (en) * | 2020-01-17 | 2021-07-22 | Hanon Systems | Device for regulating a throughflow and distributing a fluid in a fluid circuit |
| US11884129B2 (en) | 2020-01-17 | 2024-01-30 | Hanon Systems | Device for regulating a throughflow and distributing a fluid in a fluid circuit |
| CN116454321A (en) * | 2023-06-13 | 2023-07-18 | 国家电投集团氢能科技发展有限公司 | Fuel cell anode drainage device and fuel cell system |
| CN116454321B (en) * | 2023-06-13 | 2023-09-08 | 国家电投集团氢能科技发展有限公司 | Fuel cell anode drainage device and fuel cell system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3844321B2 (en) | 2006-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3977066B2 (en) | Solenoid proportional valve | |
| JPH11287354A (en) | Three-way selector solenoid valve for pilot operation | |
| US7036744B2 (en) | Solenoid valve-equipped expansion valve | |
| JP3428926B2 (en) | Pilot operated flow control valve | |
| JP4848548B2 (en) | Expansion valve with solenoid valve | |
| US6986498B2 (en) | Differential pressure valve | |
| EP0999486B1 (en) | Pilot operated flow regulating valve | |
| KR101020808B1 (en) | Expansion valve integrated with solenoid valve | |
| JP2004270975A (en) | Flow rate control valve | |
| JP4235515B2 (en) | Constant differential pressure valve | |
| JP3786518B2 (en) | Expansion valve with solenoid valve | |
| JP2000356273A (en) | Four-way selector valve | |
| JP4086682B2 (en) | Expansion device | |
| JPH11316068A (en) | Expansion valve | |
| EP1364818B1 (en) | Outflow prevention device | |
| JP2001193862A (en) | Three-way valve | |
| JP3743733B2 (en) | Solenoid proportional control valve | |
| JPH0250060A (en) | Five-way reversible valve | |
| JP2002115937A (en) | Composite valve | |
| JP4049909B2 (en) | Pilot operated flow adjustment valve | |
| JP2002130870A (en) | Double-direction valve | |
| JPH11325659A (en) | Expansion valve fitted with solenoid valve | |
| JPH10267471A (en) | Expansion valve | |
| CN111981160A (en) | Multi-way valve and heat pump system | |
| JPH0547754B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060330 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060413 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060426 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20060810 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20060814 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100825 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100825 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120825 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120825 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140825 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |