JP2561306Y2 - Pressure proportional control valve with constant flow valve - Google Patents

Pressure proportional control valve with constant flow valve

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Publication number
JP2561306Y2
JP2561306Y2 JP8299691U JP8299691U JP2561306Y2 JP 2561306 Y2 JP2561306 Y2 JP 2561306Y2 JP 8299691 U JP8299691 U JP 8299691U JP 8299691 U JP8299691 U JP 8299691U JP 2561306 Y2 JP2561306 Y2 JP 2561306Y2
Authority
JP
Japan
Prior art keywords
valve
diaphragm
seat
valve seat
main
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.)
Expired - Fee Related
Application number
JP8299691U
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Japanese (ja)
Other versions
JPH0532888U (en
Inventor
芳文 富井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITO KOKI CO., LTD.
Original Assignee
ITO KOKI CO., LTD.
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Publication date
Application filed by ITO KOKI CO., LTD. filed Critical ITO KOKI CO., LTD.
Priority to JP8299691U priority Critical patent/JP2561306Y2/en
Publication of JPH0532888U publication Critical patent/JPH0532888U/en
Application granted granted Critical
Publication of JP2561306Y2 publication Critical patent/JP2561306Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【考案の詳細な説明】[Detailed description of the invention]

【０００１】[0001]

【産業上の利用分野】この考案は、微少流量を制御でき
る定流量弁付圧力比例制御弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure proportional control valve with a constant flow valve capable of controlling a minute flow rate.

【０００２】[0002]

【従来の技術】従来、例えばガス燃焼器具、特にガスコ
ンロなどでは、小さな燃焼熱量から大きな燃焼熱量まで
その熱量に大きな幅が要求されている。その熱量に大き
な幅をもたせる方法としては、ガス供給量を変化させる
ことで燃焼熱量に幅をもたせることができる。2. Description of the Related Art Conventionally, for example, in a gas burning appliance, particularly a gas stove, a large range of calorific value is required from a small calorific value to a large calorific value . As a method of giving the heat amount a large range, the combustion heat amount can be given a range by changing the gas supply amount.

【０００３】しかしながら、ガス供給量を多くする場合
には、大きな弁口径の制御弁を使用すればよいが、大き
な弁口径の制御弁では、制御できる最少流量も大きくな
ってしまう問題があった。However, when increasing the gas supply amount, a control valve having a large valve diameter may be used. However, a control valve having a large valve diameter has a problem that the minimum flow rate that can be controlled is also increased.

【０００４】そこで、図１３及び図１４に示すように、
バーナー１に向う流路２に上流側から下流側に電磁弁
３、ガバナー４、小孔５付電磁流量制御弁６を配置した
制御装置が考案されている。この制御装置は、電磁弁３
によって流路２が開放され、カバナー４によってガス圧
を一定にし、制御弁６の開閉度合によって流量を制御
し、最小流量は、小孔５の流通量で担保する。 Therefore, as shown in FIGS. 13 and 14,
A control device has been devised in which an electromagnetic valve 3, a governor 4, and an electromagnetic flow control valve 6 with small holes 5 are arranged from the upstream side to the downstream side in the flow path 2 facing the burner 1 . This control device includes a solenoid valve 3
The flow path 2 is opened by the
And the flow rate is controlled by the degree of opening and closing of the control valve 6.
The minimum flow rate is ensured by the flow rate of the small holes 5.

【０００５】また、図１５に示すように、バーナー１に
向う流路２の上流側に電磁弁３、下流側に圧力比例制御
弁７を配置するとともに、流路２に電磁弁３の上流側と
圧力比例制御弁７の下流側とを連通するバイパス通路８
を設け、このバイパス通路８の上流側に電磁弁９を、下
流側にオリフィス１０を配置した制御装置も考案されて
いる。この制御装置は、電磁弁３、９によって流路２及
びバイパス流路８を開放し、制御弁７の開閉度合によっ
て流量を制御し、最小流量はオリフィス１０の流通量で
担保する。 As shown in FIG. 15, an electromagnetic valve 3 is disposed upstream of the flow path 2 toward the burner 1 and a pressure proportional control valve 7 is disposed downstream of the flow path 2. Passage 8 that communicates with the downstream side of the pressure proportional control valve 7
The provided electromagnetic valve 9 to the upstream side of the bypass passage 8, is devised also control device placing the orifice 10 to the downstream side
I have. This control device is controlled by solenoid valves 3 and 9 to control the flow path 2 and
And the bypass passage 8 is opened.
And the minimum flow rate is determined by the flow rate of the orifice 10.
secure.

【０００６】[0006]

【考案が解決しようとする課題】上記の両制御装置は、
各電磁弁３、６、７及びガバー４、オリフィス１０がそ
れぞれ別部品であって、装置全体が大型化し、コスト的
にも高いものであった。 [Problems to be Solved by the Invention] The above two control devices are:
The solenoid valves 3, 6, 7 and the governor 4, and the orifice 10
These are separate components, making the entire device larger and cost-effective.
Was also expensive.

【０００７】そこで、この考案の課題は、小流量から大
流量まで１台で制御できるようした定流量弁付圧力比例
制御弁を提供することにある。It is therefore an object of this invention is to provide a constant flow valve with a pressure proportional control valve which is to be controlled by one from the small flow rate to a large flow rate.

【０００８】[0008]

【課題を解決するための手段】上記の課題を解決するた
めに、請求項(1) 記載の考案は、流路１１中に直列で 同
軸上に設けた２つの弁座１２、１３と、この両弁座１
２、１３の中心に貫通させた弁棒２４と、上記両弁座１
２、１３にそれぞれ対向させてバネ１６、１６により閉
弁方向に押圧力を付与すると共に、上流側１４は上記弁
棒２４と一体にスライドし、下流側１５は上記弁棒２４
に対しフリーにスライドするよう設けた弁体１４、１５
と、上記弁棒２４に上流側の弁体１４の開弁後遅れて下
流側の弁体１５に係合して開弁するよう設けた係合部２
５と、上記下流側弁座１３の下流流路１１に設けたその
圧力が印加されるダイヤフラム１７と、通電により開弁
方向に上記ダイヤフラム１７を介し弁棒２４を所要量可
変にスライドさせるよう設けた電磁駆動部２１と、上記
上流側の弁座１２を通過後下流側の弁座１３を迂回して
上記流路１１の出口側に微少流量を流すよう設けたバイ
パス通路２６と、このバイパス通路２６に設けた弁座２
７とそれに対向するダイヤフラム弁２８との間で形成し
たダイヤフラム弁室２９と、このダイヤフラム弁２８を
開弁方向に押圧するバネ３０と、バイパス通路２６に設
けて上流側の弁座１２を通った流体を前記ダイヤフラム
弁室２９に流入させる連通路３１と、から成る構成とし
たのである。 In order to solve the above problems, the invention according to claim (1) is arranged in series in the flow path (11).
Two valve seats 12 and 13 provided on a shaft, and both valve seats 1
The valve stem 24 penetrated into the center of each of the valve seats 2 and 13 and the both valve seats 1
Closed by springs 16, 16 so as to face 2 and 13, respectively
A pressure is applied in the valve direction, and the upstream side 14 is
The valve rod 24 slides integrally with the rod 24, and the downstream side 15
14 and 15 provided to slide freely with respect to
And the valve stem 24 moves downward after the valve element 14 on the upstream side is opened.
Engaging part 2 provided so as to be engaged with the upstream side valve element 15 to open the valve
5 and the downstream valve 11 provided in the downstream flow path 11 of the downstream valve seat 13.
The diaphragm 17 to which pressure is applied, and the valve is opened by energization
The required amount of valve stem 24 can be adjusted in the direction through diaphragm 17
An electromagnetic drive unit 21 provided so as to slide strangely;
After passing through the upstream valve seat 12, bypass the downstream valve seat 13
A via provided at the outlet side of the flow path 11 so as to flow a minute flow rate
A path passage 26 and a valve seat 2 provided in the bypass passage 26
7 and a diaphragm valve 28 opposed thereto.
The diaphragm valve chamber 29 and the diaphragm valve 28
A spring 30 pressing in the valve opening direction and a bypass passage 26 are provided.
The fluid that has passed through the valve seat 12 on the upstream side
And a communication passage 31 that flows into the valve chamber 29.
It was.

【０００９】この構成の定流量弁付圧力比例制御弁は、
電磁駆動部２１に通電しないときは、バネ１６により流
量側の弁座１２に上流側の弁体１４を、下流側の弁座１
３に下流側の弁体１５をそれぞれ圧接して、流路１１が
閉じている。The pressure proportional control valve with a constant flow valve of this configuration is
When the electromagnetic drive unit 21 is not energized, the spring 16 connects the upstream valve body 14 to the flow rate side valve seat 12 and the downstream valve seat 1.
The downstream side valve body 15 is pressed against the respective 3 , and the flow path 11 is closed.

【００１０】この状態から、電磁駆動部２１に通電して
励磁電流を増やしていくと、ダイヤフラム１７とともに
弁棒２４が後退し、まず、上流側の弁座１２から上流側
の弁体１４が離れる。このとき、係合部２５は下流側の
弁体１５に係合していないため、弁棒２４に対しフリー
の下流側の弁体１５は、バネ１６により下流側の弁座１
３に圧接され、流路１１は閉じられている。In this state, when the electromagnetic drive unit 21 is energized to increase the exciting current, the valve stem 24 moves back together with the diaphragm 17 , and first, from the valve seat 12 on the upstream side. the valve body 14 on the upstream side is Ru is away. At this time, the engaging portion 25 of the downstream
Since the valve element 15 is not engaged with the valve element 15 , the valve element 15 on the downstream side that is free with respect to the valve rod 24 is moved by the spring 16 to the valve seat 1 on the downstream side.
3 , and the flow path 11 is closed.

【００１１】上流側の弁座１２と弁体１４が離れたこと
により、その開口部（間隙）を通過した流体は、バイパ
ス通路２６をへて出口に向うが、連通路３１で減圧され
てダイヤフラム弁室２９に入り、さらに、弁座２７とダ
イヤフラム弁２８との間隙を 通るときにまた減圧されて
出口側に流出する。このとき、ダイヤフラム弁室２９へ
の流体の流入量よりも、弁座２７とダイヤフラム弁２８
の間隙を通り流出する量が減ると、ダイヤフラム弁室２
９の流体圧が上昇して、ダイヤフラム弁２８を開弁方向
に移動させる。その結果、弁座２７とダイヤフラム弁２
８との間隙が広くなり、ダイヤフラム弁室２９への流入
量と同じ流出量になる。逆に、流出量が多くなれば、ダ
イヤフラム弁室２９の流体圧が下降して、ダイヤフラム
弁２８は閉弁方向に移動し、流出量は減少する。このよ
うにして、バイパス通路２６による微小流量供給が定流
量で行われる。 [0011] the valve seat 12 and the valve body 14 of the upper stream side is separated
Accordingly, the fluid that has passed through the opening (gap) goes to the outlet through the bypass passage 26 , but is decompressed in the communication passage 31.
Into the diaphragm valve chamber 29, and further into the valve seat 27.
When passing through the gap with the diaphragm valve 28, the pressure is reduced again.
Outflow to the exit side. At this time, to the diaphragm valve chamber 29
The valve seat 27 and the diaphragm valve 28
When the amount flowing out through the gap of the diaphragm decreases, the diaphragm valve chamber 2
9, the fluid pressure rises, and the diaphragm valve 28 is opened in the valve opening direction.
Move to As a result, the valve seat 27 and the diaphragm valve 2
8 and the flow into the diaphragm valve chamber 29
It will be the same amount of spill. Conversely, if the amount of spill increases,
The fluid pressure in the diaphragm valve chamber 29 drops, and the diaphragm
The valve 28 moves in the valve closing direction, and the outflow decreases. This
Thus, the minute flow rate supply by the bypass passage 26 is constant.
Done in quantity.

【００１２】つぎに、電磁駆動部２１の励磁電流を増や
してさらに弁棒２４を後退させると、係合部２５が下流
側弁体１５に係合し、弁棒２４と共に下流側の弁体２５
が同方向にスライドし、下流側の弁座１３から下流側の
弁体１５が離れ、流路１１の主流路が開放されて大流量
が流れる。その結果、電流量に比例して弁棒２４のスラ
イド量が決定されて弁座１３と弁体１５の間隙が調整さ
れ、それに対応する流量が流れる。このとき、ダイヤフ
ラム１７には流体圧が印加し、その印加圧に対応して弁
棒２４を介し下流側弁体１５を動かし、弁座１３との間
隙を調整して下流側の流体圧が一定になるように制御す
る。このようにして、流量調整される圧力比例制御弁の
働きがなされる。 Next, when the exciting current of the electromagnetic drive section 21 is increased and the valve stem 24 is further retracted, the engaging section 25 is moved downstream.
The downstream valve element 25 engages with the side valve element 15 and the valve rod 24.
High flow but slides in the same direction, away valve body 15 on the downstream side from the downstream side of the valve seat 13, the main channel of the flow channel 11 is opened
Flows. As a result, the valve stem 24 slides in proportion to the amount of current.
The gap between the valve seat 13 and the valve body 15 is adjusted by determining the amount of id.
And the corresponding flow rate flows. At this time, the diaphragm
Fluid pressure is applied to the ram 17 and a valve is provided in accordance with the applied pressure.
By moving the downstream valve body 15 through the rod 24, and between the valve seat 13
Adjust the gap so that the downstream fluid pressure is constant.
You. In this way, the pressure proportional control valve whose flow rate is adjusted
Work is done.

【００１３】また、請求項(2) 記載の考案は、流路１１
中に設けた主弁座４１と、この主弁座４１に対向させて
バネ４３により閉弁方向に押圧力を付与して設けた主弁
体４２と、上記主弁座４１下流の流体圧力を受けて応動
するよう設けたダイヤフラム１７と、このダイヤフラム
の動きに連動する上記主弁座４１及び主弁体４２を移動
自在に貫通する弁棒２４と、通電により開弁方向に上記
ダイヤフラム１７を介し弁棒２４を所要量可変にスライ
ドさせるよう設けた電磁駆動部２１と、上記主弁体４２
内にその主弁体４２の上記主弁座４１内に位置する部分
に連通させて設けた副弁座４４と、その副弁座４４とバ
ネ４５の押圧力により上記副弁座４４に押し付けられる
ダイヤフラム弁２８との間の上記主弁体４２内に形成し
たダイヤフラム弁室２９と、入口側流体を上記ダイヤフ
ラム弁室２９に流入させるよう上 記主弁体４２又はダイ
ヤフラム弁２８に設けた連通路３１と、上記副弁座４４
内に遊嵌させて上記ダイヤフラム弁２８に端を当接させ
てある上記弁棒２４に前記ダイヤフラム弁２８の開弁後
遅れて上記主弁体４２に係合して開弁するよう設けた係
合部２５と、から成る構成としたのである。 Further , the invention according to claim (2) is characterized in that:
The main valve seat 41 provided therein and the main valve seat 41
A main valve provided by applying a pressing force in the valve closing direction by a spring 43
Responsive to the body 42 and the fluid pressure downstream of the main valve seat 41
And a diaphragm 17 provided to
Moves the main valve seat 41 and main valve body 42 in conjunction with the movement of
The valve stem 24 that freely penetrates,
The valve stem 24 is slid through the diaphragm 17 so that the required amount can be varied.
The main valve body 42 and the electromagnetic drive unit 21
Of the main valve body 42 located in the main valve seat 41
A sub-valve seat 44 provided in communication with the
It is pressed against the auxiliary valve seat 44 by the pressing force of the screw 45.
Formed in the main valve body 42 between the diaphragm valve 28 and
Diaphragm valve chamber 29 and the inlet side fluid
Upper Symbol main valve body 42 or die so as to flow into the ram valve chamber 29
A communication passage 31 provided in the diaphragm valve 28;
And loosely fit inside the diaphragm valve 28 so that the end abuts on the diaphragm valve 28.
After opening the diaphragm valve 28 to the valve stem 24
A mechanism provided so as to engage with the main valve body 42 and open the valve with a delay
And a joining portion 25.

【００１４】この構成の定流量弁付圧力比例制御弁は、
電磁駆動部２１に通電しないときは、バネ４３により主
弁座４１に主弁体４２を、副弁座４４にダイヤフラム弁
２８をそれぞれ圧接して、流路１１が閉じている。The pressure proportional control valve with a constant flow rate valve of this configuration is
When the electromagnetic drive unit 21 is not energized, the main valve body 42 is attached to the main valve seat 41 by the spring 43 , and the diaphragm valve is attached to the sub-valve seat 44.
28 are pressed against each other , and the flow path 11 is closed.

【００１５】この状態から、電磁駆動部２１に通電して
励磁電流を増やしていくと、ダイヤフラム１７とともに
弁棒２４が後退し、まず、副弁座４４からダイヤフラム
弁２８が離れる。このとき、係合部２５は主弁体４２に
係合していないため、弁棒２４に対しフリーの主弁体４
２は、主弁座４１に圧接して、流路１１は閉じられてい
る。[0015] From this state, when gradually increasing the <br/> exciting current by energizing the solenoid actuator 21, the valve rod 24 is retracted together with the diaphragm 17, first, the diaphragm valve 28 from the sub-valve seat 44 Leave. At this time, the engaging portion 25 is
Because it does not engage, free of the main valve body 4 with respect to the valve stem 24
2 is pressed against the main valve seat 41 , and the flow path 11 is closed.

【００１６】一方、連通路３１をへてダイヤフラム弁室
２９に流入している流体は、副弁座４４からダイヤフラ
ム弁２８が離れたことにより、副弁座４４から主弁体４
２内を通って出口に向うが、連通路３１で減圧されてダ
イヤフラム弁室２９に入り、さらに、副弁座４４とダイ
ヤフラム弁２８との間隙を通るときにまた減圧されて出
口側に流出する。このとき、ダイヤフラム弁室２９への
流体の流入量よりも、副弁座４４とダイヤフラム弁２８
の間隙を通り流出する量が減ると、ダイヤフラム室２９
の流体圧が上昇してダイヤフラム弁２８を開弁方向に移
動させる。その結果、副弁座４４とダイヤフラム弁２８
との間隙が広くなり、ダイヤフラム弁室２９への流入量
と同じ流出量になる。逆に、流出量が多くなれば、ダイ
ヤフラム弁室２９の流体圧が下降して、ダイヤフラム弁
室２９は、閉弁方向に移動し、流出量は減少する。この
ようにして、連通路３１、主弁体４２内の通路による微
小流量供給が定流量で行われる。 On the other hand, through the communication passage 31 , the diaphragm valve chamber
Fluid that flows into 29, Daiyafura from sub valve seat 44
By arm valve 28 is separated, the main valve body 4 from the secondary valve seat 44
2 through to the outlet, but the pressure is reduced
After entering the diaphragm valve chamber 29, the auxiliary valve seat 44 and the die
When passing through the gap with the diaphragm valve 28,
Spills to the mouth. At this time, the diaphragm valve chamber 29
The auxiliary valve seat 44 and the diaphragm valve 28
When the amount flowing out through the gap decreases, the diaphragm chamber 29
Fluid pressure rises and moves the diaphragm valve 28 in the valve opening direction.
Move. As a result, the auxiliary valve seat 44 and the diaphragm valve 28
The gap between the diaphragm valve chamber 29 and the
It will be the same amount of outflow. Conversely, if the amount of spill increases, the die
The fluid pressure in the diaphragm valve chamber 29 drops, and the diaphragm valve
The chamber 29 moves in the valve closing direction, and the outflow decreases. this
In this way, the fineness of the communication passage 31 and the passage in the main valve body 42 is reduced.
The small flow rate supply is performed at a constant flow rate.

【００１７】つぎに、電磁駆動部２１の励磁電流を増や
してさらに弁棒２４を後退させると、係合部２５が主弁
体４２に係合し、弁棒２４と共に主弁体４２が同方向に
スライドし、主弁座４１から主弁体４２が離れ、流路１
１の主流路が開放されて大流量が流れる。その結果、電
流量に比例して弁棒２４のスライド量が決定されて主弁
座４１と主弁体４２の間隙が調整され、それに対応する
流量が流れる。このとき、ダイヤフラム１７には流体圧
が印加し、その印加圧に対応して弁棒２４を介し主弁体
４２を動かし、主弁座４１との間隙を調整して下流側の
流体圧が一定になるように制御する。このようにして、
流量調整される圧力比例制御弁の働きがなされる。 Next, when the exciting current of the electromagnetic drive section 21 is increased and the valve rod 24 is further moved backward, the engaging section 25
The main valve body 42 slides in the same direction together with the valve rod 24 , the main valve body 42 is separated from the main valve seat 41 , and the flow path 1
One main flow path is opened, and a large flow rate flows. As a result, the sliding amount of the valve stem 24 is determined in proportion to the amount of current, and the main valve
The gap between the seat 41 and the main valve body 42 is adjusted,
Flow rate flows. At this time, the fluid pressure is applied to the diaphragm 17.
Is applied, and the main valve element is passed through the valve rod 24 in accordance with the applied pressure.
42 to adjust the gap with the main valve seat 41 and
Control the fluid pressure to be constant. In this way,
The function of a pressure proportional control valve that regulates the flow rate is performed.

【００１８】さらに、請求項(3) 記載の考案は、流路１
１中に設けた主弁座４１と、この主弁座４１に対向させ
てバネ５２により閉弁方向に押圧力を付与して設けた主
弁体４２と、上記主弁座４１下流の流体圧力を受けて応
動するよう設けたダイヤフラム１７と、このダイヤフラ
ム１７の動きに連動する上記主弁座４１及び主弁体４２
を移動自在に貫通する弁棒２４と、通電により開弁方向
に上記ダイヤフラム１７を介し弁棒２４を所要量可変に
スライドさせるよう設けた電磁駆動部２１と、上記主弁
体４２内の上部にその主弁体４２の上記主弁座４１内に
位置する部分に連通させて設けた第１弁座５１と、バネ
５２により上記第１弁座５１に押し付けられるよう設け
た上記弁棒２４と一体にスライドする副弁体５３と、上
記主弁体４２内の下部に設けた上記第１弁座５１に連通
する第２弁座５４と、その第２弁座５４とバネ５５によ
り上記第２弁座５４から離れる方向の押圧力を付与した
ダイヤフラム弁２８との間の主弁体４２内に形成したダ
イヤフラム弁室２９と、入口側流体を上記ダイヤフラム
弁室２９に流入させるよう上記主弁体４２又はダイヤフ
ラム弁２８に設けた連通路３１と、前記副弁体５３の開
弁後遅れて副弁体５３と一体となって主弁体４２がスラ
イドして開弁するよう副弁体５３と主弁体４２の間に設
けた両者５３、４２の係合手段５６と、から成る構成と
したのである。 Further, according to the invention of claim (3), the flow path 1
1 and a main valve seat 41 provided therein.
The spring 52 provides a pressing force in the valve closing direction.
The valve 42 and the fluid pressure downstream of the main valve seat 41 receive a response.
And a diaphragm 17 provided to move the diaphragm.
The main valve seat 41 and the main valve body 42 interlocked with the movement of the
The valve stem 24 movably penetrates through
The required amount of the valve stem 24 can be changed via the diaphragm 17
An electromagnetic drive unit 21 provided to slide, and the main valve
In the upper part of the body 42, the main valve seat 42 of the main valve body 42
A first valve seat 51 provided in communication with the portion to be located, and a spring
52 so as to be pressed against the first valve seat 51.
A sub-valve 53 that slides integrally with the valve stem 24,
Communicates with the first valve seat 51 provided at a lower portion in the main valve body 42
Of the second valve seat 54, the second valve seat 54 and the spring 55
Pressing force in the direction away from the second valve seat 54
A diaphragm formed in the main valve body 42 between the diaphragm valve 28 and
The diaphragm valve chamber 29 and the inlet-side fluid are transferred to the diaphragm
The main valve body 42 or the diaphragm is set so as to flow into the valve chamber 29.
Opening of the communication passage 31 provided in the ram valve 28 and opening of the sub-valve 53
The main valve body 42 is integrated with the sub-valve 53
Between the sub-valve element 53 and the main valve element 42 to open the valve.
An engagement means 56 of the two beams 53, 42;
It was done.

【００１９】この構成の定流量弁付圧力比例制御弁は、
電磁駆動部２１に通電しないときは、バネ４３により主
弁座４１に主弁体４２を、バネ５３により第１弁座５１
に副弁座５３をそれぞれ圧接して流路１１が閉じてい
る。The pressure proportional control valve with a constant flow valve of this configuration is
When not energized electromagnetic driving unit 21, the main valve body 42 to the main valve seat 41 by a spring 43, first valve seat 51 Ri by the spring 53
The sub-valve seats 53 are pressed against each other to close the flow path 11 .

【００２０】この状態から、電磁駆動部２１に通電して
励磁電流を増やしていくと、ダイヤフラム１７とともに
弁棒２４が後退し、まず、副弁座５１から副弁体５３が
離れる。このとき、係合手段５６は係合していないた
め、弁棒２４に対しフリーの主弁体４２は、主弁座４１
に圧接して、流路１１は閉じられている。In this state , when the electromagnetic drive unit 21 is energized to increase the exciting current, the valve stem 24 moves back together with the diaphragm 17 , and first, the sub valve seat 51 is moved from the sub valve seat 51 to the sub valve seat 51. body 53 is Ru away <br/>. At this time, the engaging means 56 was not engaged.
Because, the main valve body 42 of the free to the valve stem 24, the main valve seat 41
, And the flow path 11 is closed.

【００２１】一方、連通路３１をへてダイヤフラム弁室
２９に流入している流体は、第２弁座５４からバネ５５
によりダイヤフラム弁２８が離れていることにより、第
２弁座５４とダイヤフラム弁２８との間隙から第１弁座
５５と副弁体５３の間隙を介し主弁体４２内を通って出
口に向うが、連通路３１で減圧されてダイヤフラム弁室
２９に入り、さらに、第２弁座５４とダイヤフラム弁２
８との間隙を通るときにまた減圧されて出口側に流出す
る。このとき、ダイヤフラム弁室２９への流体の流入量
よりも、副弁座４４とダイヤフラム弁２８の間隙を通り
流出する量が減ると、ダイヤフラム室２９の流体圧が上
昇してダイヤフラム弁２８を開弁方向に移動させる。そ
の結果、第２弁座５４とダイヤフラム弁２８との間隙が
広くなり、ダイヤフラム弁室２９への流入量と同じ流出
量になる。逆に、流出量が多くなれば、ダイヤフラム弁
室２９の流体圧が下降して、ダイヤフラム弁室２９は、
バネ５５に抗して閉弁方向に移動し、流出量は減少す
る。このようにして、連通路３１、主弁体４２内の通路
による微小流量供給が定流量で行われる。 On the other hand, through the communication passage 31 , the diaphragm valve chamber
Fluid that flows into 29, the spring 55 from the second valve seat 54
The diaphragm valve 28 is separated by
From the gap between the second valve seat 54 and the diaphragm valve 28, the first valve seat
55 passes through the main valve body 42 through the gap between the
To the mouth, the pressure is reduced in the communication passage 31 and the diaphragm valve chamber
29, the second valve seat 54 and the diaphragm valve 2
When passing through the gap with 8, it is decompressed again and flows out to the outlet side
You. At this time, the amount of fluid flowing into the diaphragm valve chamber 29
Rather than passing through the gap between the sub-valve seat 44 and the diaphragm valve 28.
When the amount flowing out decreases, the fluid pressure in the diaphragm chamber 29 increases.
The diaphragm valve 28 is moved upward in the valve opening direction. So
As a result, the gap between the second valve seat 54 and the diaphragm valve 28
Wider, outflow equal to the amount of inflow into diaphragm valve chamber 29
Amount. Conversely, if the outflow increases, the diaphragm valve
The fluid pressure in the chamber 29 decreases, and the diaphragm valve chamber 29
It moves in the valve closing direction against the spring 55, and the outflow decreases.
You. Thus, the communication passage 31, the passage in the main valve body 42
Is supplied at a constant flow rate.

【００２２】つぎに、電磁駆動部２１の励磁電流を増や
してさらに弁棒２４を後退させると、係合手段５６が係
合し、弁棒２４と共に主弁体４２が同方向にスライド
し、主弁座４１から主弁体４２が離れ、流路１１の主流
路が開放されて大流量が流れる。その結果、電流量に比
例して弁棒２４のスライド量が決定されて主弁座４１と
主弁体４２の間隙が調整され、それに対応する流量が流
れる。このとき、ダイヤフラム１７には流体圧が印加
し、その印加圧に対応して弁棒２４を介し主弁体４２を
動かし、主弁座４１との間隙を調整して下流側の流体圧
が一定になるように制御する。このようにして、流量調
整される圧力比例制御弁の働きがなされる。 Next , when the exciting current of the electromagnetic drive section 21 is increased and the valve stem 24 is further retracted, the engaging means 56 is engaged, and the main valve body 42 slides together with the valve stem 24 in the same direction.
Then, the main valve body 42 is separated from the main valve seat 41, and the main flow
The road is opened and a large flow flows. As a result, the sliding amount of the valve stem 24 is determined in proportion to the amount of current, and the main valve seat 41 is
The gap of the main valve body 42 is adjusted, and the flow rate corresponding to the gap is adjusted.
It is. At this time, fluid pressure is applied to the diaphragm 17.
Then, the main valve body 42 is moved through the valve rod 24 in accordance with the applied pressure.
To adjust the gap with the main valve seat 41 to adjust the fluid pressure on the downstream side.
Is controlled to be constant. In this way, the flow control
The function of the pressure proportional control valve to be adjusted is performed.

【００２３】[0023]

【実施例】以下、この考案に係る実施例を添付図面に基
づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the accompanying drawings.

【００２４】（第１実施例） 図１に示すように流路１１中に直列で同軸上に２つの弁
座１２、１３を設けると共に、この両弁座１２、１３に
対向するよう流路１１中に組み込んだ弁体１４、１５に
は、バネ１６、１６により閉弁方向の押圧力が付与され
ている。(First Embodiment) As shown in FIG. 1, two valve seats 12 and 13 are provided in series and coaxially in a flow passage 11, and the flow passage 11 is opposed to the two valve seats 12 and 13. The valve bodies 14 and 15 incorporated therein are provided with a pressing force in the valve closing direction by springs 16 and 16 .

【００２５】１７は中空室１８内を二分するダイヤフラ
ムで、上記中空室１８のダイヤフラム１７の片面側は、
通路１９を介し流路１１の下流側弁座１３の下流部分に
連通させてあり、もう片面側は、通孔２０を介し大気に
連通させてある。Reference numeral 17 denotes a diaphragm that divides the inside of the hollow chamber 18 into two parts.
The downstream side of the downstream side valve seat 13 of the flow path 11 is communicated with the downstream side of the flow path 11 through the passage 19, and the other side is communicated with the atmosphere through the through hole 20.

【００２６】２１は通電により下流側弁座１３の方向に
ダイヤフラム１７を動かす電磁駆動部である。この電磁
駆動部２１は、コイル２２への通電により上記コイル２
２の回りに磁路を形成して、ダイヤフラム１７の中心に
気密状に先端を接続したプランジヤ２３をスライドさせ
るように構成してあり、通電電流量によってプランジャ
２３のスライド量を所要量に可変し得る。 [0026] 21 Ru electromagnetic drive unit der to move the diaphragm 17 in the direction of the downstream side valve seat 13 by energization. Electromagnetic drive unit 21 of this is the coil 2 by energizing the coil 22
2 around to form a magnetic path, Yes constitutes a plunger 23 connected to the tip in an airtight manner in the center of the diaphragm 17 so as to slide the plunger by energizing current amount
23 slide amounts can be changed to required amounts.

【００２７】２４は通電によりスライドするプランジヤ
２３の動きを弁体１４、１５に伝える弁棒である。Reference numeral 24 denotes a valve stem for transmitting the movement of the plunger 23 slid by energization to the valve elements 14 and 15.

【００２８】上流側の弁体１４は、弁棒２４と一体にス
ライドするよう接続され、下流側の弁体１５は、弁棒２
４に対しフリーになるよう軸芯の透孔に上記弁棒２４を
遊嵌状に貫通させてある。The upstream valve element 14 is connected so as to slide integrally with the valve stem 24, and the downstream valve element 15 is connected to the valve stem 2.
The valve stem 24 is loosely inserted through the through hole of the shaft so that the valve stem 4 is free.

【００２９】また、上記下流側の弁体１５は、上流側の
弁体１４の開弁後遅れて開弁するよう弁棒２４に係合部
２５が設けてある。この係合部２５は、図示の場合、弁
棒２４の外周にピンを突出させて、このピンが下流側弁
体１５の先端面中央部に当接すると弁棒２４と共に下流
側弁体１５をスライドさせるようになっている。Further, the valve body 15 of the downstream, Oh Ru engaging portion 25 to the valve stem 24 so that a delay after opening of the upstream side of the valve body 14 is opened is provided. The engaging portion of this 25, in the illustrated case, is protruded pins on the outer periphery of the valve stem 24, the downstream-side valve body 15 with the valve rod 24 when the pin abuts against the distal end face central portion of the downstream-side valve body 15 To slide.

【００３０】２６は流路１１の弁座１２、１３間と下流
側の弁座１３を迂回して出口に通ずるバイパス通路で、
このバイパス通路２６内には、弁座２７とそれに対向す
るダイヤフラム弁２８とでダイヤフラム弁室２９が形成
されている。そのダイヤフラム弁２８は、バネ３０によ
り開弁方向の押圧力が付勢されている。Reference numeral 26 denotes a bypass passage which bypasses between the valve seats 12 and 13 of the flow path 11 and the valve seat 13 on the downstream side and leads to the outlet.
This bypass passage 26, that is formed diaphragm valve chamber 29 between the diaphragm valve 28 facing thereto with a valve seat 27. As a diaphragm valve 28, the pressing force in the valve opening direction is urged by a spring 30.

【００３１】ダイヤフラム弁室２９には、バイパス通路
２６の流体が連通路３１を経て流入させるようになって
いる。その連通路３１は、図１に示すように弁座２７の
外周外側に位置するようダイヤフラム弁２８に設ける場
合と、図２に示すようにバイパス通路２６とダイヤフラ
ム弁室２９を連通する通路３２に設ける場合とがあり、
連通路３１の断面積は、所要の微小流量となるように適
宜設定する。[0031] the diaphragm valve chamber 29, the fluid in the bypass passage 26 is Ru have <br/> adapted to flow into through the communication passage 31. Communication passage 31 of that is, the passage 32 communicating with the case, the bypass passage 26 and the diaphragm valve chamber 29 as shown in FIG. 2 provided in the diaphragm valve 28 so as to be positioned on the outer periphery outside the valve seat 27 as shown in FIG. 1 In some cases ,
The cross-sectional area of the communication passage 31 is appropriately set so as to have a required minute flow rate .

【００３２】この実施例は以上の構成であり、電磁駆動
部２１に通電しないときは、バネ１６により、上流側の
弁座１２に上流側の弁体１４を、下流側の弁座１３に下
流側の弁体１５をそれぞれ圧接して、流路１１が閉じて
いる。In this embodiment, when the electromagnetic drive unit 21 is not energized, the spring 16 causes the upstream valve body 14 to be connected to the upstream valve seat 12 and the downstream valve body 13 to be connected to the downstream valve seat 13 by the spring 16. The side valve bodies 15 are pressed against each other, and the flow path 11 is closed.

【００３３】この状態から、電磁駆動部２１に通電して
励磁電流を増やしていくと、プランジヤ２３が図１の下
方にスライドし、そのスライドをダイヤフラム１７を介
し弁棒２４に伝えて上記弁棒２４を後退させ、まず、上
流側の弁座１２から上流側の弁体１４が離れる。このと
き、係合部２５は下流側の弁体１５に係合していないた
め、弁棒２４に対しフリーの下流側の弁体１５は、バネ
１６により下流側の弁座１３に圧接され流路１１は閉じ
られている。 [0033] From this state, when gradually increasing the <br/> exciting current by energizing the electric magnetic drive kinematic unit 21, the lower plunger 23 of FIG. 1
And slide it through the diaphragm 17
The valve stem 24 is retracted by transmitting the same to the valve stem 24, and first, the upstream valve element 14 is separated from the upstream valve seat 12 . This and
At this time, the engaging portion 25 is not engaged with the valve body 15 on the downstream side.
Therefore, the valve element 15 on the downstream side that is free with respect to the valve stem 24 is provided with a spring.
The pressure passage 16 is pressed against the valve seat 13 on the downstream side, and the flow path 11 is closed.
Have been.

【００３４】上流側の弁座１２と弁体１４が離れたこと
により、その間隙を通過した流体は、バイパス通路２６
をへて出口に向うが、連通路３１で減圧されてダイヤフ
ラム弁室２９に入り、さらに、弁座２７とダイヤフラム
弁２８との間隙を通るときにまた減圧されて出口側に流
出する。このとき、ダイヤフラム弁室２９への流体の流
入量よりも、弁座２７とダイヤフラム弁２８の間隙を通
り流出する量が減ると 、ダイヤフラム弁室２９の流体圧
が上昇して、ダイヤフラム弁２８を開弁方向に移動させ
る。その結果、弁座２７とダイヤフラム弁２８との間隙
が広くなり、ダイヤフラム弁室２９への流入量と同じ流
出量になる。逆に、流出量が多くなれば、ダイヤフラム
弁室２９の流体圧が下降して、ダイヤフラム弁２８はバ
ネ３０に抗して閉弁方向に移動し、流出量は減少する。
このようにして、バイパス通路２６による微小流量供給
が定流量で行われる。 The separation of the valve seat 12 and the valve body 14 on the upstream side
As a result, the fluid that has passed through the gap is
To the exit, but the pressure is reduced in the communication passage 31 and the diaphragm
After entering the ram valve chamber 29, the valve seat 27 and the diaphragm
When passing through the gap with the valve 28, the pressure is reduced again and flows to the outlet side.
Put out. At this time, the flow of the fluid to the diaphragm valve chamber 29
Rather than through the gap between the valve seat 27 and the diaphragm valve 28
When the amount flowing out decreases , the fluid pressure in the diaphragm valve chamber 29
Rises, and moves the diaphragm valve 28 in the valve opening direction.
You. As a result, the gap between the valve seat 27 and the diaphragm valve 28
And the same flow as the inflow into the diaphragm valve chamber 29
It comes out. Conversely, if the amount of spill increases, the diaphragm
The fluid pressure in the valve chamber 29 drops, and the diaphragm valve 28
It moves in the valve closing direction against the spring 30, and the outflow decreases.
Thus, the minute flow rate supply by the bypass passage 26
Is performed at a constant flow rate.

【００３５】つぎに、電磁駆動部２１の励磁電流を増や
してさらに弁棒２４を後退させると、係合部２５が下流
側弁体１５に係合し、弁棒２４と共に下流側の弁体２５
が同方向にスライドし、下流側の弁座１３から下流側の
弁体１５が離れ、流路１１の主流路が開放されて大流量
が流れる。その結果、電流量に比例して弁棒２４のスラ
イド量が決定されて弁座１３と弁体１５の間隙が調整さ
れ、それに対応する流量が流れる。このとき、ダイヤフ
ラム１７には流体圧が印加し、その印加圧に対応して弁
棒２４を介し弁体１５を動かし、弁座１３との間隙を調
整して下流側の流体圧が一定になるように制御する。こ
のようにして、流量調整される圧力比例制御弁の働きが
なされる。 Next, when the exciting current of the electromagnetic drive section 21 is increased and the valve stem 24 is further retracted , the engaging section 25 is moved downstream.
The downstream valve element 25 engages with the side valve element 15 and the valve rod 24.
Slides in the same direction, from the downstream valve seat 13 to the downstream side.
The valve element 15 is separated, the main flow path of the flow path 11 is opened, and a large flow rate is obtained.
Flows. As a result , the valve stem 24 slides in proportion to the amount of current.
The gap between the valve seat 13 and the valve body 15 is adjusted by determining the amount of id.
And the corresponding flow rate flows. At this time, the diaphragm
Fluid pressure is applied to the ram 17 and a valve is provided in accordance with the applied pressure.
The valve body 15 is moved via the rod 24 to adjust the gap with the valve seat 13.
And control so that the fluid pressure on the downstream side becomes constant. This
The function of the pressure proportional control valve that regulates the flow rate is
Done.

【００３６】（第２実施例）この実施例は、 図５に示すように、上記のバイパス通路
２６を主弁体４２内に形成したものであり、上述と同一
符号は同一物を示して作用も同じのため、その説明を省
略し、まず、流路１１中に主弁座４１を設けると共に、
この主弁座４１に対向するよう流路１１中に組み込んだ
主弁体４２には、バネ４３により閉弁方向の押圧力が付
与されている。[0036] (Second Embodiment) This embodiment, as shown in FIG. 5, the above bypass passage
26 is formed in the main valve body 42, and is the same as that described above.
Since the symbols indicate the same things and have the same function, the description thereof is omitted.
First, while providing the main valve seat 41 in the flow path 11,
A pressing force in a valve closing direction is applied by a spring 43 to a main valve body 42 incorporated in the flow path 11 so as to face the main valve seat 41.

【００３７】その主弁体４２内には、主弁体４２の主弁
座４１内に位置する部分に連通させた副弁座４４と、バ
ネ４５の押圧力により副弁座４４に押し付けられるダイ
ヤフラム弁２８とでダイヤフラム弁室２９が設けられて
いる。[0037] Its main valve body 42, a sub valve seat 44 which communicates with the portion located within the main valve seat 41 of the main valve body 42, that is pressed against the sub valve seat 44 by the pressing force of the spring 45 A diaphragm valve chamber 29 is provided with the diaphragm valve 28.

【００３８】ダイヤフラム弁室２９には入口側流体を流
入させる連通路３１が形成されてい る。この連通路３１
は、図５に示すように主弁体４２の外周からダイヤフラ
ム弁室２９に連通するよう設ける場合と、図６に示すよ
うに副弁座４４の外周外側に位置するようダイヤフラム
弁２８に設ける場合とがあり、連通路３１の断面積は、
所要の微小流量となるように適宜設定する。The inlet fluid flows through the diaphragm valve chamber 29.
Communication passage 31 for input is that formed. This communication passage 31
Are provided so as to communicate from the outer periphery of the main valve body 42 to the diaphragm valve chamber 29 as shown in FIG. 5 and to the diaphragm valve 28 which is located outside the outer periphery of the sub-valve seat 44 as shown in FIG. And the cross-sectional area of the communication passage 31 is
It is set appropriately so as to have a required minute flow rate .

【００３９】なお、主弁体４２と弁棒２４との間は、副
弁座４４の中心に弁棒２４を貫通させて、ダイヤフラム
弁２８に上記弁棒２４の端面を当接し、ダイヤフラム弁
２８の開弁後遅れて主弁体４２が開弁するよう弁棒２４
に係合部２５が設けてある。In addition, between the main valve element 42 and the valve stem 24 , the valve stem 24 is made to penetrate through the center of the sub-valve seat 44, and the end face of the valve stem 24 is brought into contact with the diaphragm valve 28. The valve stem 24 is opened so that the main valve body 42 opens after a short time.
Is provided with an engaging portion 25.

【００４０】この実施例は以上の構成であり、電磁駆動
部２１に通電しないときは、バネ４３により主弁座４１
に主弁体４２を、バネ４５により副弁座４４にダイヤフ
ラム弁２８をそれぞれ圧接して、流路１１が閉じてい
る。 This embodiment has the above configuration. When the electromagnetic drive unit 21 is not energized, the main valve seat 41 is
The main valve body 42 is pressed against the sub-valve seat 44 by a spring 45, and the diaphragm valve 28 is pressed against the sub-valve seat 44, whereby the flow path 11 is closed.

【００４１】この状態から、電磁駆動部２１に通電して
励磁電流を増やしていくと、プランジャ２３が図５の下
方にスライドし、そのスライドをダイヤフラム１７を介
し弁棒２４に伝えて上記弁棒２４を後退させ、副弁座４
４からダイヤフラム弁２８が離れる。このとき、係合部
２５は主弁体４２に係合していないため、弁棒２４に対
しフリーの主弁体４２は、主弁座４１に圧接して、流路
１１は閉じられている。 In this state, when the electromagnetic drive unit 21 is energized to increase the exciting current, the plunger 23 moves downward as shown in FIG.
And slide it, through the diaphragm 17 the slide of its
To convey to the valve stem 24 is retracted the valve rod 24, the auxiliary valve seat 4
4 diaphragm valve 28 is Ru away from. At this time,
25 is not engaged with the main valve body 42,
The free main valve body 42 is pressed against the main valve seat 41 to
11 is closed.

【００４２】一方、連通路３１をへてダイヤフラム弁室
２９に流入している流体は、副弁座４４からダイヤフラ
ム弁２８が離れたことにより、副弁座４４と弁棒２４と
の間隙から主弁体４２内を通って出口に向うが、連通路
３１で減圧されてダイヤフラム弁室２９に入り、さら
に、副弁座４４とダイヤフラム弁２８との間隙を通ると
きにまた減圧されて出口側に流出する。このとき、ダイ
ヤフラム弁室２９への流体の流入量よりも、副弁座４４
とダイヤフラム弁２８の間隙を通り流出する量が減る
と、ダイヤフラム室２９の流体圧が上昇してダイヤフラ
ム弁２８を開弁方向に移動させる。その結果、副弁座４
４とダイヤフラム弁２８との間隙が広くなり、ダイヤフ
ラム弁室２９への流入量と同じ流出量になる。逆に、流
出量が多くな れば、ダイヤフラム弁室２９の流体圧が下
降して、ダイヤフラム弁室２９は、閉弁方向に移動し、
流出量は減少する。このようにして、連通路３１、主弁
体４２内の通路による微小流量供給が定流量で行われ
る。 On the other hand, through the communication passage 31, the diaphragm valve chamber
Fluid flowing into the fuel tank 29 flows from the sub-valve seat 44 to the diaphragm.
When the valve 28 is released, the auxiliary valve seat 44 and the valve stem 24
From the gap through the main valve body 42 to the outlet.
The pressure is reduced at 31 and enters the diaphragm valve chamber 29.
Then, when passing through the gap between the sub-valve seat 44 and the diaphragm valve 28,
Then, the pressure is reduced again and flows out to the outlet side. At this time, die
The auxiliary valve seat 44 is smaller than the amount of fluid flowing into the diaphragm valve chamber 29.
And the amount flowing out through the gap between the diaphragm valve 28 is reduced.
When the fluid pressure in the diaphragm chamber 29 rises, the diaphragm
The valve 28 is moved in the valve opening direction. As a result, sub valve seat 4
4, the gap between the diaphragm valve 28 and the diaphragm valve 28 is increased.
The outflow amount is the same as the inflow amount into the ram valve chamber 29. Conversely, flow
Volume number of lever, the fluid pressure of the diaphragm valve chamber 29 is below
Descends, the diaphragm valve chamber 29 moves in the valve closing direction,
Runoff is reduced. Thus, the communication passage 31, the main valve
The minute flow rate is supplied at a constant flow rate by the passage in the body 42.
You.

【００４３】つぎに、電磁駆動部２１の励磁電流を増や
してさらに弁棒２４を後退させると、係合部２５が主弁
体４２に係合し、弁棒２４と共に主弁体４２が同方向に
スライドし、主弁座４１から主弁体４２が離れ、流路１
１の主流路が開放されて大流量が流れる。この状態で
は、第１の実施例と同様に、電流量に比例して弁棒２４
のスライド量が決定されて主弁座４１と主弁体４２の間
隙が調整され、それに対応する流量が流れ、また、ダイ
ヤフラム１７が印加圧に対応して主弁体４２と主弁座４
１との間隙を調整して下流側の流体圧が一定になるよう
に制御して、流量調整される圧力比例制御弁の働きがな
される。 Next, when retracting the further valve rod 24 by increasing the excitation current of the electromagnetic drive portion 21, the engaging portion 25 is the main valve
The main valve body 42 is engaged with the body 42 in the same direction as the valve rod 24.
The main valve element 42 slides away from the main valve seat 41,
One main flow path is opened, and a large flow rate flows. In this state
Is the valve stem 24 in proportion to the amount of current, as in the first embodiment.
Between the main valve seat 41 and the main valve body 42 is determined.
The gap is adjusted, the corresponding flow rate flows, and the die
The main valve body 42 and the main valve seat 4 correspond to the applied pressure.
1 so that the downstream fluid pressure is constant
And the pressure proportional control valve that regulates the flow rate does not work.
Is done.

【００４４】（第３実施例）この実施例も、 図９に示すように、上記バイパス通路２
６を主弁体４２内に形成したものであり、上述と同一符
号は同一物を示して作用も同じのため、その説明を省略
し、流路１１に組み込んだ主弁体４２内の上部に、主弁
座４１内に位置する部分に連通させた第１弁座５１と、
バネ５２により第１弁座５１に押し付けられる副弁体５
３とが設けられ、主弁体４２内の下部には、第２弁座５
４と、その第２弁座５４とバネ５５により開弁方向に押
圧力を付与したダイヤフラム弁２８との間の主弁体４２
内に形成したダイヤフラム弁室２９とが設けられてい
る。[0044] (Third Embodiment) This embodiment is also as shown in FIG. 9, the bypass passage 2
6 is formed in the main valve body 42,
The symbols indicate the same thing and have the same function, so the explanation is omitted.
A first valve seat 51 communicated with a portion located in the main valve seat 41 at an upper portion inside the main valve body 42 incorporated in the flow path 11 ;
Sub-valve element 5 pressed against first valve seat 51 by spring 52
3 is provided in the lower portion inside the main valve body 42.
4 and the main valve element 42 between the diaphragm valve 28 to which a pressing force is applied in the valve opening direction by the second valve seat 54 and the spring 55.
A diaphragm valve chamber 29 formed therein is provided.

【００４５】ダイヤフラム室２９には同じく連通路３１
から流体が流入するようになっている。その連通路３１
は、図９に示すように主弁体４２の外周からダイヤフラ
ム弁室２９に連通するよう設ける場合と、図１０に示す
ように第２弁座５４の外周外側に位置するようダイヤフ
ラム弁２８に設ける場合とがあり、連通路３１の断面積
は、所要の微小流量となるように適宜設定する。The diaphragm chamber 29 has a communication passage 31 in the same manner.
The fluid flows in from. The communication passage 31
Is provided so as to communicate from the outer periphery of the main valve body 42 to the diaphragm valve chamber 29 as shown in FIG. 9 and to the diaphragm valve 28 so as to be located outside the outer periphery of the second valve seat 54 as shown in FIG. In some cases, the cross-sectional area of the communication passage 31 is appropriately set so as to have a required minute flow rate .

【００４６】また、主弁体４２は、係合手段５６により
副弁体５３の開弁後遅れて開弁するようになっている。
その係合手段５６は、第１弁座５１の中心に貫通させた
弁棒２４の端に副弁体５３を固定し、弁棒２４と共に後
退する副弁体５３が第２弁座５４の出口端に当接して主
弁体４２を押し戻すようになっている。[0046] Further, the main valve body 42 is delayed after the opening of the auxiliary valve body 53 that have adapted to open by the engagement means 56.
Engaging means 56 of that is, the sub-valve body 53 to the end of the valve stem 24 to penetrate the center of the first valve seat 51 to secure the sub-valve body 53 moves backward together with the valve rod 24 is in the second valve seat 54 The main valve body 42 is pushed back by contacting the outlet end.

【００４７】図中、５７は第２弁座５４の出口用通路で
ある。In the drawing, reference numeral 57 denotes an outlet passage of the second valve seat 54.

【００４８】この実施例は、以上の構成であり、電磁駆
動部２１に通電しないときは、バネ４３により主弁座４
１に主弁体４２を、バネ５２により副弁座５１に副弁体
５３をそれぞれ圧接して、流路１１が閉じている。 This embodiment has the above configuration. When the electromagnetic drive unit 21 is not energized, the main valve seat 4 is
1, the main valve body 42 is pressed against the sub-valve seat 51 by the spring 52, and the flow path 11 is closed.

【００４９】この状態から、電磁駆動部２１に通電して
励磁電流を増やしていくと、ダイヤフラム１７とともに
弁棒２４が後退し、まず、第１弁座５１から副弁体５３
が離れる。このとき、係合部２５は係合していないた
め、弁棒２４に対しフリーの主弁体４２は、主弁座４１
に圧接して、流路１１は閉じられている。 [0049] From this state, when gradually increasing the <br/> exciting current by energizing the electromagnetic drive unit 21, with the diaphragm 17
The valve stem 24 retreats, and first, the first valve seat 51 moves the sub-valve 53
Leaves. At this time, the engaging portion 25 was not engaged.
Therefore, the main valve element 42 that is free with respect to the valve stem 24 is
, And the flow path 11 is closed.

【００５０】一方、連通路３１をへてダイヤフラム弁室
２９に流入している流体は、第２弁座５４からバネ５５
によりダイヤフラム弁２８が離れたことにより、第２弁
座５４とダイヤフラム弁２８との間隙から第１弁座５５
と副弁体５３の間隙を介し主弁体４２内を通って出口に
向うが、連通路３１で減圧されてダイヤフラム弁室２９
に入り、さらに、第２弁座５４とダイヤフラム弁２８と
の間隙を通るときにまた減圧されて出口側に流出する。
このとき、ダイヤフラム弁室２９への流体の流入量より
も、副弁座４４とダイヤフラム弁２８の間隙を通り流出
する量が減ると、ダイヤフラム室２９の流体圧が上昇し
てダイヤフラム弁２８を開弁方向に移動させる。その結
果、第２弁座５４とダイヤフラム弁２８との間隙が広く
なり、ダイヤフラム弁室２９への流入量と同じ流出量に
なる。逆に、流出量が多くなれば、ダイヤフラム弁室２
９の流体圧が下降して、ダイヤフラム弁２８は、バネ５
５に抗して閉弁方向に移動し、流出量は減少する。この
ようにして、連通路３１、主弁体４２内の通路による微
小流量供給が定流量で行われる。 On the other hand, through the communication passage 31, the diaphragm valve chamber
The fluid flowing into the valve 29 is supplied from the second valve seat 54 to the spring 55
Release of the diaphragm valve 28, the second valve
From the gap between the seat 54 and the diaphragm valve 28, the first valve seat 55
To the outlet through the main valve body 42 through the gap between the
On the other hand, the pressure is reduced in the communication passage 31 and the diaphragm valve chamber 29
And the second valve seat 54 and the diaphragm valve 28
When passing through the gap, the pressure is reduced again and flows out to the outlet side.
At this time, based on the amount of fluid flowing into the diaphragm valve chamber 29,
Also flows out through the gap between the sub-valve seat 44 and the diaphragm valve 28
When the amount of the fluid decreases, the fluid pressure in the diaphragm chamber 29 increases.
To move the diaphragm valve 28 in the valve opening direction. The result
As a result, the gap between the second valve seat 54 and the diaphragm valve 28 is wide.
And the outflow amount is the same as the inflow amount into the diaphragm valve chamber 29.
Become. Conversely, if the outflow increases, the diaphragm valve chamber 2
9, the diaphragm valve 28 is turned on by the spring 5
5 moves in the valve closing direction, and the outflow decreases. this
In this way, the fineness of the communication passage 31 and the passage in the main valve body 42 is reduced.
The small flow rate supply is performed at a constant flow rate.

【００５１】つぎに、電磁駆動部２１の励磁電流を増や
してさらに弁棒２４を後退させると、係合手段５６が係
合し、弁棒２４と共に主弁体４２が同方向にスライド
し、主弁座４１から主弁体４２が離れ、流路１１の主流
路が開放されて大流量が流れる。この状態では、第１、
第２実施例と同様に、電流量に比例して弁棒２４のスラ
イド量が決定されて主弁座４１と主弁体４２の間隙が調
整され、それに対応する流量が流れ、また、ダイヤフラ
ム１７が印加圧に対応して主弁体４２と主弁座４１との
間隙を調整して下流側の流体圧が一定になるように制御
して、流量調整される圧力比例制御弁の働きがなされ
る。 Next, when the exciting current of the electromagnetic drive section 21 is increased and the valve stem 24 is further retracted , the engaging means 56 is engaged.
And the main valve body 42 slides in the same direction with the valve rod 24.
Then, the main valve body 42 is separated from the main valve seat 41, and the main flow
The road is opened and a large flow flows. In this state, the first,
As in the second embodiment, the valve stem 24 slides in proportion to the amount of current.
The id amount is determined and the gap between the main valve seat 41 and the main valve body 42 is adjusted.
And the corresponding flow rate flows, and the diaphragm
Of the main valve body 42 and the main valve seat 41 corresponding to the applied pressure.
Adjust the gap to control the downstream fluid pressure to be constant
The function of the pressure proportional control valve is
You.

【００５２】なお、各実施例において、上述のように、
バイパス通路２６（連通路３１から主弁体４２の通路）
を通る流体は、連通路３１及びダイヤフラム弁２８と弁
座２７、４４、５４の間隙によって減圧され、その減圧
量を一定とすると、連通路３１と前記間隙によってその
減圧量を担うこととなり、その度合は、弁座２７…側の
通路に対する連通路３１の大きさ（断面積の大きさ）に
よって決定される。断面積が小さい方が減圧効果は大き
く、弁座に対する弁の接離による減圧効果は、弁座内径
に対応するからである。因みに、その接離による減圧効
果は弁座内径が大きい方が小さい。 In each embodiment, as described above,
Bypass passage 26 (passage from communication passage 31 to main valve element 42)
Through the communication passage 31 and the diaphragm valve 28
The pressure is reduced by the gap between the seats 27, 44 and 54, and the pressure is reduced.
When the amount is constant, the communication passage 31 and the gap
It will be responsible for the amount of pressure reduction, and the degree of
The size of the communication passage 31 with respect to the passage (the size of the cross-sectional area)
Is determined. The smaller the cross-sectional area, the greater the decompression effect
In addition, the decompression effect due to the contact and separation of the valve with the valve seat
It is because it corresponds. Incidentally, the decompression effect due to the contact and separation
The result is smaller when the inner diameter of the valve seat is larger.

【００５３】したがって、連通路３１の内径を、図１、
図２に示すように弁座２７の内径より、図５、図６に示
すように副弁座４４の内径より、図９、図１０に示すよ
うに第２弁座５４の内径よりも小さくすると、連通路３
１に対する前記間隙での圧力減少量を小さくできること
となり、ダイヤフラム弁２８の作動に基づくバイパス通
路２６全体の圧力減少量も小さくなる。このため、バイ
パス通路２６の減圧量を適宜に設定して制御できる必要
最低入口圧力を低くしても、ダイヤフラム弁２８の作動
によって大きな減圧が生じない定流量制御を行うことが
でき、これにより、流体が都市ガスで入口圧力が５０ｍ
ｍ水柱の低い圧力でも微小流量制御をすることができ
る。[0053] Thus, the inner diameter of the communication passage 31, Figure 1,
Than the inner diameter of the valve seat 27 as shown in FIG. 2, FIG. 5, than the inner diameter of the auxiliary valve seat 44 as shown in FIG. 6, FIG. 9, when smaller than the inner diameter of the second valve seat 54 as shown in FIG. 10 , Communication passage 3
That it can reduce the pressure reduction amount in the gap for one
And the bypass passage based on the operation of the diaphragm valve 28
Pressure reduction amount of the entire road 26 that a small. For this reason,
Even if the required minimum inlet pressure that can be controlled by appropriately setting the pressure reduction amount of the path passage 26 is lowered , the operation of the diaphragm valve 28
Constant flow control that does not cause large pressure reduction
It is possible that the fluid is city gas and the inlet pressure is 50m
Micro flow rate control can be performed even at a low pressure of m water column.

【００５４】また、都市ガスで入口圧力が５０ｍｍ水柱
の場合、バイパス通路２６全体の圧力減少量を５０ｍｍ
水柱以下にする必要があるが、前記間隙での圧力減少量
が小さいものであると、その間隙と連通路３１の両圧力
減少量の和が５０ｍｍ水柱以下になればよいため、連通
路３１で圧力減少量を比較的大きくでき、その圧力減少
量が大きくなれば、ダイヤフラム弁２８前後の差圧が大
きくなり、ダイヤフラム弁２８の動きが機敏となって、
安定かつ精度の高い制御ができる。In the case of city gas having an inlet pressure of 50 mm water column, the pressure reduction amount of the entire bypass passage 26 is reduced by 50 mm.
Water column has to be below, the pressure reduction in the gap
Is small, the pressure in both the gap and the communication passage 31
Since it is sufficient that the sum of the reduction amounts is not more than 50 mm water column , the pressure reduction amount can be relatively large in the communication passage 31 and the pressure reduction
The greater the amount, the differential pressure before and after the diaphragm valve 28 is increased, and the movement of the diaphragm valve 28 is a quick,
Stable and highly accurate control is possible.

【００５５】一方、連通路３１の内径を、図３、図４に
示すように弁座２７の内径より、図７、図８に示すよう
に副弁座４４の内径より、図１１、図１２に示すように
第２弁座５４の内径よりも大きくすると、連通路３１に
対する前記間隙での圧力減少量が大きくなるが、流体
が、例えば水道水で入口圧が２〜４kg/cm2の比較的高い
圧力の場合は、微小流量においては、入口圧に対する圧
力減少量も小さく、圧力減少があまり問題にならない。
したがって、弁座２７…内径を小さくすると、ダイヤフ
ラム弁２８の動きによる前記間隙の流量変化が小さくな
るため、ダイヤフラム弁２８の変化に応じて流量が大き
く変化せず、微小流量の安定した制御ができる。 On the other hand, the inner diameter of the communication passage 31, Figure 3, than the inner diameter of the valve seat 27 as shown in FIG. 4, FIG. 7, than the inner diameter of the auxiliary valve seat 44 as shown in FIG. 8, 11, 12 If greater than the inner diameter of the second valve seat 54 as shown in, the communication passage 31
On the other hand, when the pressure of the fluid is relatively high , for example, tap water and the inlet pressure is 2 to 4 kg / cm 2 , the pressure decreases with respect to the inlet pressure at a small flow rate.
Force reduction amount is small, pressure reduction is not as much of a problem.
Therefore, reducing the valve seat 27 ... inner diameter, the flow rate change in the gap due to the movement of the diaphragm valve 28 is reduced, the flow rate is large in accordance with a change of the diaphragm valve 28
Stable control of minute flow rate without change .

【００５６】[0056]

【効果】この考案は、以上のように構成し、一台の定流
量弁付圧力比例制御弁によって小流量から大流量を制御
できるようにしたので、電磁弁、ガバナー、電磁弁やオ
リフィス付のバイパス通路を設ける必要もなく、流量制
御装置の小型化を図ることができ、かつコストを低減す
ることもできる。[Effect] conceived of this is, configured as described above, control the large flow rate from a single constant flow valve with pressure proportional control valve therefore small flow rate
Since the possible way, solenoid valve, governor, there is no need to Ru a bypass passage with an electromagnetic valve or an orifice, flow system
It is possible to reduce the size of the control device, and can also reduce costs.

【図面の簡単な説明】[Brief description of the drawings]

【図１】この考案に係る第１実施例の縦断正面図FIG. 1 is a vertical front view of a first embodiment according to the present invention.

【図２】同実施例における連通路の他の実施例の縦断正
面図FIG. 2 is a longitudinal sectional front view of another embodiment of the communication passage in the embodiment.

【図３】同実施例の連通路の内径を弁座の内径よりも大
きくした縦断正面図FIG. 3 is a longitudinal sectional front view of the embodiment in which the inner diameter of the communication passage is larger than the inner diameter of the valve seat;

【図４】同連通孔の他の実施例の縦断正面図Figure 4 is a longitudinal front view of another embodiment of the communication holes

【図５】第２実施例の縦断正面図FIG. 5 is a longitudinal sectional front view of the second embodiment.

【図６】同実施例における連通路の他の実施例の縦断正
面図FIG. 6 is a longitudinal sectional front view of another embodiment of the communication passage in the embodiment.

【図７】同実施例の連通路の内径を副弁座の内径よりも
大きくした縦断正面図FIG. 7 is a longitudinal sectional front view of the embodiment in which the inner diameter of the communication passage is larger than the inner diameter of the sub-valve seat;

【図８】同連通孔の他の実施例の縦断正面図FIG. 8 is a longitudinal sectional front view of another embodiment of the communication hole.

【図９】第３実施例の縦断正面図FIG. 9 is a longitudinal sectional front view of the third embodiment.

【図１０】同実施例における連通路の他の実施例の縦断
正面図FIG. 10 is a longitudinal sectional front view of another embodiment of the communication passage in the embodiment.

【図１１】同実施例の連通路の内径を第２弁座の内径よ
りも大きくした縦断正面図FIG. 11 is a longitudinal sectional front view of the embodiment in which the inner diameter of the communication passage is larger than the inner diameter of the second valve seat.

【図１２】同連通孔の他の実施例の縦断正面図FIG. 12 is a longitudinal sectional front view of another embodiment of the communication hole.

【図１３】従来の制御装置の回路図FIG. 13 is a circuit diagram of a conventional control device.

【図１４】小孔付電磁流量制御弁の縦断拡大正面図FIG. 14 is a longitudinal enlarged front view of the electromagnetic flow control valve with small holes.

【図１５】従来の制御装置の回路図FIG. 15 is a circuit diagram of a conventional control device.

【符号の説明】[Explanation of symbols]

１１ 流路 １２、１３ 弁座 １４、１５ 弁体 １６、３０、４３、４５、５２、５５ バネ １７ ダイヤフラム １８ 中空室 １９ 通路 ２０ 通孔 ２１ 電磁駆動部 ２２ コイル ２３ プランジャ ２４ 弁棒 ２５ 係合部 ２６ バイパス通路 ２７ 弁座 ２８ ダイヤフラム弁 ２９ ダイヤフラム弁室 ３１ 連通路 ４１ 主弁座 ４２ 主弁体 ４４ 副弁座 ５１ 第１弁座 ５３ 副弁体 ５４ 第２弁座 ５６ 係合手段 DESCRIPTION OF SYMBOLS 11 Flow path 12, 13 Valve seat 14, 15 Valve body 16, 30, 43, 45, 52, 55 Spring 17 Diaphragm 18 Hollow chamber 19 Passage 20 Through hole 21 Electromagnetic drive part 22 Coil 23 Plunger 24 Valve rod 25 Engagement part 26 bypass passage 27 valve seat 28 diaphragm valve 29 diaphragm valve chamber 31 communication passage 41 main valve seat 42 main valve body 44 sub-valve seat 51 first valve seat 53 sub-valve 54 second valve seat 56 engaging means

Claims (3)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項１】 流路１１中に直列で同軸上に設けた２つ
の弁座１２、１３と、この両弁座１２、１３の中心に貫
通させた弁棒２４と、上記両弁座１２、１３にそれぞれ
対向させてバネ１６、１６により閉弁方向に押圧力を付
与すると共に、上流側１４は上記弁棒２４と一体にスラ
イドし、下流側１５は上記弁棒２４に対しフリーにスラ
イドするよう設けた弁体１４、１５と、上記弁棒２４に
上流側の弁体１４の開弁後遅れて下流側の弁体１５に係
合して開弁するよう設けた係合部２５と、上記下流側弁
座１３の下流流路１１に設けたその圧力が印加されるダ
イヤフラム１７と、通電により開弁方向に上記ダイヤフ
ラム１７を介し弁棒２４を所要量可変にスライドさせる
よう設けた電磁駆動部２１と、上記上流側の弁座１２を
通過後下流側の弁座１３を迂回して上記流路１１の出口
側に微少流量を流すよう設けたバイパス通路２６と、こ
のバイパス通路２６に設けた弁座２７とそれに対向する
ダイヤフラム弁２８との間で形成したダイヤフラム弁室
２９と、このダイヤフラム弁２８を開弁方向に押圧する
バネ３０と、バイパス通路２６に設けて上流側の弁座１
２を通った流体を前記ダイヤフラム弁室２９に流入させ
る連通路３１と、から成る定流量弁付圧力比例制御弁。1. A two valve seats 12 and 13 provided coaxially in series in the flow path 11, a valve rod 24 which is passed through the center of both valve seats 12 and 13, the both valve seats 12, 13 and a spring 16, 16 to apply a pressing force in the valve closing direction by springs 16 , while the upstream side 14 slides integrally with the valve rod 24, and the downstream side 15 moves against the valve rod 24. Valve elements 14 and 15 provided so as to slide freely, and engagement provided with the valve rod 24 so as to engage with the valve element 15 on the downstream side with a delay after opening of the valve element 14 on the upstream side and open the valve. Part 25 and the downstream valve
A pressure sensor provided in the downstream flow path 11 of the seat 13
And Iyafuramu 17, an electromagnetic driving portion 21 provided so as to slide in the required amount varying the Daiyafu <br/> ram 17 through valve stem 24 in the valve opening direction when energized, downstream after passing through the valve seat 12 of the upstream-side between the bypass passage 26 provided so as to bypass the side of the valve seat 13 passes a small amount of flow to the outlet side of the flow path 11, the diaphragm valve 28 facing the valve seat 27 provided in the bypass passage 26 therewith Diaphragm valve chamber formed
29, a spring 30 for pressing the diaphragm valve 28 in the opening direction, is provided in the bypass passage 26 upstream of the valve seat 1
A pressure proportional control valve with a constant flow rate valve, comprising: a communication passage 31 for allowing the fluid that has passed through 2 to flow into the diaphragm valve chamber 29 . 【請求項２】 流路１１中に設けた主弁座４１と、この
主弁座４１に対向させてバネ４３により閉弁方向に押圧
力を付与して設けた主弁体４２と、上記主弁座４１下流
の流体圧力を受けて応動するよう設けたダイヤフラム１
７と、このダイヤフラムの動きに連動する上記主弁座４
１及び主弁体４２を移動自在に貫通する弁棒２４と、通
電により開弁方向に上記ダイヤフラム１７を介し弁棒２
４を所要量可変にスライドさせるよう設けた電磁駆動部
２１と、上記主弁体４２内にその主弁体４２の上記主弁
座４１内に位置する部分に連通させて設けた副弁座４４
と、その副弁座４４とバネ４５の押圧力により上記副弁
座４４に押し付けられるダイヤフラム弁２８との間の上
記主弁体４２内に形成したダイヤフラム弁室２９と、入
口側流体を上記ダイヤフラム弁室２９に流入させるよう
上記主弁体４２又はダイヤフラム弁２８に設けた連通路
３１と、上記副弁座４４内に遊嵌させて上記ダイヤフラ
ム弁２８に端を当接させてある上記弁棒２４に前記ダイ
ヤフラム弁２８の開弁後遅れて上記主弁体４２に係合し
て開弁するよう設けた係合部２５と、から成る定流量弁
付圧力比例制御弁。2. A main valve seat 41 provided in the flow passage 11 , a main valve body 42 provided opposite to the main valve seat 41 by applying a pressing force in a valve closing direction by a spring 43, and Diaphragm 1 provided to respond in response to fluid pressure downstream of valve seat 41
7 and the main valve seat 4 interlocked with the movement of the diaphragm.
1 and the valve stem 24 movably penetrating the main valve body 42, and the valve stem 2 through the diaphragm 17 in the valve opening direction by energization.
Electromagnetic drive unit provided so that 4 can be slid in a required amount
21, the sub-valve seat 44 provided by communication with the portion positioned on the main valve seat 41 of the main valve body 42 to the main valve body 42
When a diaphragm valve chamber 29 formed on <br/> SL main valve body 42 between the diaphragm valve 28 is pressed against the said sub valve seat 44 by the pressing force of the sub-valve seat 44 and the spring 45, the inlet So that the side fluid flows into the diaphragm valve chamber 29.
A communication passage provided in the main valve body 42 or the diaphragm valve 28
31, engaged with the main valve body 42 with a delay after opening of the valve stem 24 to the diaphragm valve 28 which is loosely fitted in the sub-valve seat 44 are abutted against an end to the diaphragm valve 28 A pressure proportional control valve with a constant flow rate valve, comprising an engaging portion 25 provided to open the valve. 【請求項３】 流路１１中に設けた主弁座４１と、この
主弁座４１に対向させてバネ５２により閉弁方向に押圧
力を付与して設けた主弁体４２と、上記主弁座４１下流
の流体圧力を受けて応動するよう設けたダイヤフラム１
７と、このダイヤフラム１７の動きに連動する上記主弁
座４１及び主弁体４２を移動自在に貫通する弁棒２４
と、通電により開弁方向に上記ダイヤフラム１７を介し
弁棒２４を所要量可変にスライドさせるよう設けた電磁
駆動部２１と、上記主弁体４２内の上部にその主弁体４
２の上記主弁座４１内に位置する部分に連通させて設け
た第１弁座５１と、バネ５２により上記第１弁座５１に
押し付けられるよう設けた上記弁棒２４と一体にスライ
ドする副弁体５３と、上記主弁体４２内の下部に設けた
上記第１弁座５１に連通する第２弁座５４と、その第２
弁座５４とバネ５５により上記第２弁座５４から離れる
方向の押圧力を付与したダイヤフラム弁２８との間の主
弁体４２内に形成したダイヤフラム弁室２９と、入口側
流体を上記ダイヤフラム弁室２９に流入させるよう上記
主弁体４２又はダイヤフラム弁２８に設けた連通路３１
と、前記副弁体５３の開弁後遅れて副弁体５３と一体と
なって主弁体４２がスライドして開弁するよう副弁体５
３と主弁体４２の間に設けた両弁体５３、４２の係合手
段５６と、から成る定流量弁付圧力比例制御弁。3. The flow path11Main valve seat installed inside41And this
Main valve seat41Spring facing52To close the valve
Main valve body provided with force42When,Downstream of the main valve seat 41
ofDiaphragm provided to respond to fluid pressure1
7And this diaphragm17In the movementMain valve linked to above
Passes through the seat 41 and the main valve body 42 movably.Valve stem24
And the above diaphragm in the valve opening direction17Through
Valve stem24ToVariable requirementElectromagnetic provided to slide
Drive part21And the main valve body42At the top insideThatMain valve4
2Main valve seat above41Provided to communicate with the part located inside
The first valve seat51And the spring52The first valve seat51To
Provided to be pressedSlid together with the valve stem 24
DoSub-valve53And the main valve body42At the bottom insideEstablished
Communicates with the first valve seat 512nd valve seat54 and its second
With valve seat 54Spring55ByMove away from the second valve seat 54
DirectionalDiaphragm valve with pressing forceLord between 28
Formed in valve body 42Diaphragm valve chamber29When,Entrance side
Fluid through the diaphragmvalveRoom29Let it flow intothe above
Main valve body 42 or diaphragm valve 28Communication passage provided in31
And the sub-valve53Later with the secondary valve 53
Become the main valve42Slides and opens the valveSub-valve 5
3 and the main valve body 42Engagement hand of both valve bodies 53 and 42
Step56When,Pressure proportional control valve with a constant flow valve.
JP8299691U 1991-08-20 1991-10-14 Pressure proportional control valve with constant flow valve Expired - Fee Related JP2561306Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8299691U JP2561306Y2 (en) 1991-08-20 1991-10-14 Pressure proportional control valve with constant flow valve

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP6569991 1991-08-20
JP3-65699 1991-08-20
JP8299691U JP2561306Y2 (en) 1991-08-20 1991-10-14 Pressure proportional control valve with constant flow valve

Publications (2)

Publication Number Publication Date
JPH0532888U JPH0532888U (en) 1993-04-30
JP2561306Y2 true JP2561306Y2 (en) 1998-01-28

Family

ID=26406837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8299691U Expired - Fee Related JP2561306Y2 (en) 1991-08-20 1991-10-14 Pressure proportional control valve with constant flow valve

Country Status (1)

Country Link
JP (1) JP2561306Y2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5456493B2 (en) * 2010-01-13 2014-03-26 愛三工業株式会社 Solenoid valve and evaporative fuel processing apparatus equipped with the solenoid valve
JP6902923B2 (en) * 2017-05-11 2021-07-14 リンナイ株式会社 Gas combustion device

Also Published As

Publication number Publication date
JPH0532888U (en) 1993-04-30

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