JP2808790B2 - Flow control valve - Google Patents
Flow control valveInfo
- Publication number
- JP2808790B2 JP2808790B2 JP3516590A JP3516590A JP2808790B2 JP 2808790 B2 JP2808790 B2 JP 2808790B2 JP 3516590 A JP3516590 A JP 3516590A JP 3516590 A JP3516590 A JP 3516590A JP 2808790 B2 JP2808790 B2 JP 2808790B2
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- valve
- pressure receiving
- pressure chamber
- back pressure
- 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
Links
Landscapes
- Fluid-Driven Valves (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は流体の流量を制御する流量制御弁に関する。Description: TECHNICAL FIELD The present invention relates to a flow control valve for controlling a flow rate of a fluid.
従来の技術 流量制御弁において、絞りにより発生する流体の圧力
を受圧体に導き、流量を制御することは既に知られてい
る。すなわち、第２図に示すように本体１内の差圧発生
体２で発生する差圧を受圧体３に導き、受圧体３の力と
スプリング４の力をバランスさせ、受圧体３と一体で動
く弁体５で流量を制御するものである。2. Description of the Related Art It is already known to control the flow rate of a flow control valve by guiding the pressure of a fluid generated by a throttle to a pressure receiving body. That is, as shown in FIG. 2, the differential pressure generated by the differential pressure generating body 2 in the main body 1 is guided to the pressure receiving body 3, and the force of the pressure receiving body 3 and the force of the spring 4 are balanced. The flow rate is controlled by the moving valve element 5.
発明が解決しようとする課題 しかしながら上記のような構成では、完全止水が難し
く、それを達成させるには、差圧発生体２において完全
止水しなければならず構成が複雑になってしまう。Problems to be Solved by the Invention However, in the above-described configuration, it is difficult to completely stop water, and to achieve it, the water must be completely stopped in the differential pressure generating body 2, which complicates the configuration.
本発明はかかる従来の課題を解消するもので、構成が
簡単で、止水も可能で、比例的に流量を調節できる、主
に温水に用いる流量制御弁を提供することを目的とす
る。An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a flow control valve mainly used for hot water, which has a simple structure, can stop water, and can adjust a flow rate proportionally.
課題を解決するための手段 上記課題を解決するために本発明の流量制御弁は、流
入路と流出路を有する弁筐体と、前記弁筐体内に設けた
第１の受圧体と、前記第１の受圧体で１次側と微少に連
通しながら仕切られた第１の背圧室と、前記第１の受圧
体と連動する止水弁と、前記止水弁の２次側と前記第１
の背圧室とを連通するパイロット孔と、前記第１の受圧
体を付勢する第１の付勢手段と、ソレノイドと、このソ
レノイドにより駆動されるプランジャと、前記止水弁の
下流に設け、流量を調節する制御弁と、前記制御弁と連
結し受圧面積が等しい第２の受圧体と、前記制御弁を付
勢する第２の付勢手段と、前記第２の受圧体でその１次
側と微少に連通しながら仕切られた第２の背圧室と、前
記制御弁の２次側と前記第２の背圧室とを連通する連通
孔と、前記連通孔を貫通し、前記プランジャと連結して
制御弁を駆動するシャフトと、前記シャフトの先端に設
け、前記パイロット孔を開閉するパイロット弁を備えて
いる。Means for Solving the Problems To solve the above problems, a flow control valve according to the present invention includes a valve housing having an inflow passage and an outflow passage, a first pressure receiving member provided in the valve housing, A first back pressure chamber partitioned by the first pressure receiving member while communicating minutely with the primary side; a water stop valve interlocked with the first pressure receiver; a secondary side of the water stop valve; 1
A pilot hole communicating with the back pressure chamber, first urging means for urging the first pressure receiving member, a solenoid, a plunger driven by the solenoid, and a downstream side of the water shutoff valve. A control valve for adjusting the flow rate, a second pressure receiving member connected to the control valve and having the same pressure receiving area, a second biasing means for biasing the control valve, and a second pressure receiving member. A second back pressure chamber partitioned while communicating minutely with the next side, a communication hole communicating the secondary side of the control valve and the second back pressure chamber, and penetrating the communication hole; A shaft connected to the plunger to drive the control valve; and a pilot valve provided at a tip of the shaft to open and close the pilot hole.
作用 以上の構成により、ソレノイドに電流を流すとプラン
ジャは制御弁を付勢する第２の付勢手段に抗して吸引さ
れ、シャフトを介して連結したパイロット弁が開き、第
１の受圧体を挟む１次側と第１の背圧室の圧力差によ
り、第１の付勢手段に抗して止水弁がリフトして、制御
弁へ流れが生じる、さらに電流値を増やすと、制御弁が
開成され流量が増大する、つまりソレノイドへ流す電流
値の大小により制御弁の開口する面積が変わり流量を調
節するものである。According to the above configuration, when a current flows through the solenoid, the plunger is sucked against the second urging means for urging the control valve, the pilot valve connected via the shaft opens, and the first pressure receiving member is opened. Due to the pressure difference between the sandwiched primary side and the first back pressure chamber, the water stop valve is lifted against the first urging means, causing a flow to the control valve. Is opened and the flow rate increases, that is, the opening area of the control valve changes according to the magnitude of the current flowing through the solenoid, and the flow rate is adjusted.
実施例 以下、本発明の実施例を添付図面を用いて説明する。
第１図は、本発明に一実施例における流量制御弁の断面
図である。第１図において、流入路６と流出路７を有す
る弁筐体８と、前記弁筐体８内に第１の受圧体９として
ダイヤフラム10を設けている。前記ダイヤフラム10に
は、それにより仕切られた第１の背圧室11と１次側と微
少に連通させる小孔12が開いている。前記ダイヤフラム
10はその前後の圧力差によりリフトするが、前記弁筐体
８に構成した第１の弁座13にダイフラム10自体が当接し
止水弁14を兼用している。第１の付勢手段（スプリン
グ）15はダイヤフラム10を第１の弁座13に当接する方向
に付勢している。前記止水弁14（ダイヤフラム10）の下
流に、流量を調節する制御弁16があり、制御弁体17と第
２の弁座18で構成され、前記制御弁体17と連結した第２
の受圧体19であるピストン20は、第２の弁座18と口径を
同じにして受圧面積を等しくしている。前記制御弁体17
を付勢する第２の付勢手段（自重でもかまわないがここ
ではスプリング）21と、前記ピストン20の外周でその１
次側と微少に連通しながら仕切られた第２の背圧室22が
構成されている。前記制御弁体17とピストン20で構成さ
れた系の軸中心に貫通した連通孔23があり、前記制御弁
16の２次側と前記第２の背圧室22とを連通している。ま
た、前記第１の背圧室11と止水弁14の２次側であり第２
の背圧室22を連通するパイロット孔24がある。前記連通
孔23内を貫通し、制御弁16を駆動するシャフト25は、ソ
レノイド26により駆動されるプランジャ27に連結してお
り、前記シャフト25の先端に、前記パイロット孔24を開
閉するパイロット弁28を備えている。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a sectional view of a flow control valve according to an embodiment of the present invention. In FIG. 1, a valve housing 8 having an inflow passage 6 and an outflow passage 7, and a diaphragm 10 as a first pressure receiving body 9 in the valve housing 8 are provided. The diaphragm 10 has a small hole 12 for minute communication with the first back pressure chamber 11 and the primary side partitioned by the diaphragm. The diaphragm
Although the lift 10 is caused by the pressure difference between the front and rear, the diaphragm 10 itself contacts the first valve seat 13 formed in the valve housing 8 and also serves as the water stop valve 14. The first urging means (spring) 15 urges the diaphragm 10 in a direction in which the diaphragm 10 comes into contact with the first valve seat 13. Downstream of the water stop valve 14 (diaphragm 10), there is a control valve 16 for adjusting the flow rate, which is constituted by a control valve element 17 and a second valve seat 18 and is connected to the control valve element 17 by a second valve.
The piston 20 as the pressure receiving body 19 has the same diameter as the second valve seat 18 and has the same pressure receiving area. The control valve element 17
A second urging means (a spring may be used under its own weight, but may be its own weight), and the first urging means 21
A second back pressure chamber 22 is partitioned while being slightly communicated with the next side. There is a communication hole 23 that penetrates through the center of the axis of the system constituted by the control valve body 17 and the piston 20.
The secondary side 16 communicates with the second back pressure chamber 22. The second side of the first back pressure chamber 11 and the water shutoff valve 14
There is a pilot hole 24 which communicates with the back pressure chamber 22. A shaft 25 that penetrates through the communication hole 23 and drives the control valve 16 is connected to a plunger 27 driven by a solenoid 26, and a pilot valve 28 that opens and closes the pilot hole 24 at the tip of the shaft 25. It has.
以上の構成で、ソレノイド26に通電すると、制御弁体
17を付勢する第２のスプリング21に抗してプランジャ27
が吸引され、連結されたシャフト25の先に設けたパイロ
ット弁28がリフトしパイロット孔24を開く。そのとき第
１の背圧室11の圧力が低下し、ダイヤフラム10は１次側
の圧力との差圧により第１のスプリング15に打ち勝って
押し上げられ、すなわち、ダイヤフラム10が第１の弁座
13から離脱し、液体が制御弁16へ流れる。電流値が小さ
いうちは制御弁体17と第２の弁座18がなす開口部は小さ
く全体の流体の吐出量は少ないが、ソレノイド26への通
電を増やすとプランジャ27が更に吸引され、シャフト25
を介して制御弁体17をリフトし、流体の流量が増え始め
る。つまり、ソレノイド26へ流す電流値を加減すること
で流体の流量を調節するものである。With the above configuration, when the solenoid 26 is energized, the control valve
Plunger 27 against second spring 21 that biases 17
Is sucked, and the pilot valve 28 provided at the tip of the connected shaft 25 is lifted to open the pilot hole 24. At that time, the pressure in the first back pressure chamber 11 decreases, and the diaphragm 10 is pushed upward by overcoming the first spring 15 by the pressure difference from the pressure on the primary side, that is, the diaphragm 10 is moved to the first valve seat.
Disengaged from 13 and liquid flows to control valve 16. While the current value is small, the opening formed by the control valve element 17 and the second valve seat 18 is small, and the discharge amount of the whole fluid is small. However, when the power supply to the solenoid 26 is increased, the plunger 27 is further sucked, and the shaft 25
The control valve element 17 is lifted through the valve, and the flow rate of the fluid starts to increase. That is, the flow rate of the fluid is adjusted by adjusting the current value flowing through the solenoid 26.
以上のように本実施例の流量制御弁によれば、流量の
開閉はパイロット弁28によるパイロット孔24の開閉で流
体圧により作動するもので、流量を調節する制御弁16
は、制御弁体17と連結した第２の受圧体19であるピスト
ン20が、第２の弁座18と口径を同じにして受圧面積を等
しくしているため、流体の圧力に作用されず、小さな駆
動力で駆動することが可能で、ソレノイド26もコンパク
トなもので消費電力も少ない。流れを止めるときは流体
の圧力で閉成され、閉止時の速度は、第１の受圧体９
（ダイヤフラム10）の微小な小孔12からのリーク量の大
きさによるもので、この小孔12の径を管理して閉止時の
ウォータハンマを防止することも容易に可能である。As described above, according to the flow control valve of the present embodiment, the opening and closing of the flow is operated by the fluid pressure by opening and closing the pilot hole 24 by the pilot valve 28.
Since the piston 20, which is the second pressure receiving body 19 connected to the control valve body 17, has the same pressure receiving area as the second valve seat 18 with the same diameter, it is not affected by the pressure of the fluid, It can be driven with a small driving force, and the solenoid 26 is compact and consumes little power. When the flow is stopped, the flow is closed by the pressure of the fluid.
This depends on the amount of leakage from the small holes 12 of the (diaphragm 10), and the diameter of the small holes 12 can be controlled to easily prevent water hammer at the time of closing.
また、制御弁体17とピストン20で構成された系とシャ
フト25とは、連結せずに駆動させる構成のため、制御弁
体17とピストン20とプランジャ27の同軸度など考慮しな
くてもよく、加工、組み立てが容易であり、万一制御弁
16がゴミかみ等で固着しても、シャフト25はフリーでパ
イロット弁28でパイロット孔24を閉止し、流量を停止す
ることはできる。また、その時もパルス的に大電流をソ
レノイド26に通電し、シャフト25から制御弁16に衝撃力
を加えて固着を解除させることもできる。Further, since the system constituted by the control valve element 17 and the piston 20 and the shaft 25 are driven without being connected, it is not necessary to consider the coaxiality of the control valve element 17, the piston 20 and the plunger 27. Easy to process, assemble and control valve
Even if 16 is stuck by dust or the like, the shaft 25 is free and the pilot valve 24 can close the pilot hole 24 to stop the flow rate. Also at this time, a large current can be supplied to the solenoid 26 in a pulsed manner, and an impact force can be applied to the control valve 16 from the shaft 25 to release the sticking.
発明の効果 以上のように本発明の流量制御弁によれば、次の効果
が得られる。Effects of the Invention As described above, according to the flow control valve of the present invention, the following effects can be obtained.
（１）流体の吐出・停止を行なう弁と、流量調節を行な
う弁を別に設け、一つのプランジャで駆動されるが、パ
イロット弁は止水することにのみ働く構成としたため、
小流量でも振動的にならず調節可能で、ソレノイドへの
通電する電流値と制御弁の開度は１対１の関係にあり制
御が容易である。(1) A valve for discharging / stopping the fluid and a valve for adjusting the flow rate are separately provided and driven by one plunger. However, the pilot valve is configured to work only for stopping water.
Even a small flow rate can be adjusted without causing vibration, and the current value to be supplied to the solenoid and the opening degree of the control valve are in a one-to-one relationship, so that control is easy.
（２）制御弁体とシャフトとは、連結せずに駆動させる
構成のため、制御弁とシャフト、プランジャの同軸度な
ど考慮しなくてもよく、加工、組み立てが容易で、万一
制御弁がゴミかみ等で固着しても、シャフトはフリーで
パイロット弁でパイロット孔を閉止し、流量を停止する
ことはできる。(2) Since the control valve body and the shaft are driven without being connected, it is not necessary to consider the coaxiality of the control valve, the shaft, and the plunger, and the processing and assembly are easy. Even if it is fixed by dust or the like, the shaft is free and the pilot hole can be closed by the pilot valve to stop the flow rate.
第１図は本発明の一実施例の流量制御弁の断面図、第２
図は従来の流量制御弁を示す断面図である。 ６……流入路、７……流出路、８……弁筐体、９……第
１の受圧体、11……第１の背圧室、14……止水弁、15…
…第１の付勢手段、16……制御弁、19……第２の受圧
体、21……第２の付勢手段、22……第２の背圧室、23…
…連通孔、24……パイロット孔、25……シャフト、26…
…ソレノイド、27……プランジャ、28……パイロット
弁。FIG. 1 is a sectional view of a flow control valve according to an embodiment of the present invention, and FIG.
The figure is a sectional view showing a conventional flow control valve. 6 ... inflow path, 7 ... outflow path, 8 ... valve housing, 9 ... first pressure receiver, 11 ... first back pressure chamber, 14 ... water shutoff valve, 15 ...
... first urging means, 16 ... control valve, 19 ... second pressure receiving body, 21 ... second urging means, 22 ... second back pressure chamber, 23 ...
… Communication hole, 24 …… Pilot hole, 25 …… Shaft, 26…
… Solenoid, 27 …… Plunger, 28 …… Pilot valve.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長岡 行夫 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 芝 文一 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭55−78877（ＪＰ，Ａ) 特開 平１−224585（ＪＰ，Ａ) 実開 昭60−62116（ＪＰ，Ｕ) 実公 昭47−38247（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.6，ＤＢ名) F16K 31/40──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yukio Nagaoka 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. In-company (56) References JP-A-55-78877 (JP, A) JP-A-1-224585 (JP, A) JP-A-60-62116 (JP, U) JP-A-47-38247 (JP, Y1) (58) Field surveyed (Int.Cl. 6 , DB name) F16K 31/40
Claims (1)
筐体内に設けた第１の受圧体と、前記第１の受圧体で１
次側と微少に連通しながら仕切られた第１の背圧室と、
前記第１の受圧体と連動する止水弁と、前記止水弁の２
次側と前記第１の背圧室とを連通するパイロット孔と、
前記第１の受圧体を付勢する第１の付勢手段と、ソレノ
イドと、このソレノイドにより駆動されるプランジャ
と、前記止水弁の下流に設け、流量を調節する制御弁
と、前記制御弁と連結し受圧面積が等しい第２の受圧体
と、前記制御弁を付勢する第２の付勢手段と、前記第２
の受圧体でその１次側と微少に連通しながら仕切られた
第２の背圧室と、前記制御弁の２次側と前記第２の背圧
室とを連通する連通孔と、前記連通孔を貫通し、前記プ
ランジャと連結して制御弁を駆動するシャフトと、前記
シャフトの先端に設け、前記パイロット孔を開閉するパ
イロット弁を備えた流量制御弁。A valve housing having an inflow passage and an outflow passage; a first pressure receiving member provided in the valve housing;
A first back pressure chamber partitioned while communicating minutely with the next side;
A water stop valve interlocked with the first pressure receiving body;
A pilot hole communicating the next side with the first back pressure chamber;
First biasing means for biasing the first pressure receiving body, a solenoid, a plunger driven by the solenoid, a control valve provided downstream of the water shutoff valve to adjust a flow rate, and the control valve A second pressure receiving body connected to the second pressure receiving member and having the same pressure receiving area; a second urging means for urging the control valve;
A second back pressure chamber partitioned by the pressure receiving member while communicating with the primary side of the control valve minutely; a communication hole communicating the secondary side of the control valve with the second back pressure chamber; A flow control valve comprising: a shaft that penetrates a hole and is connected to the plunger to drive a control valve; and a pilot valve provided at a tip of the shaft and that opens and closes the pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3516590A JP2808790B2 (en) | 1990-02-15 | 1990-02-15 | Flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3516590A JP2808790B2 (en) | 1990-02-15 | 1990-02-15 | Flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03239882A JPH03239882A (en) | 1991-10-25 |
| JP2808790B2 true JP2808790B2 (en) | 1998-10-08 |
Family
ID=12434260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3516590A Expired - Fee Related JP2808790B2 (en) | 1990-02-15 | 1990-02-15 | Flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2808790B2 (en) |
-
1990
- 1990-02-15 JP JP3516590A patent/JP2808790B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03239882A (en) | 1991-10-25 |
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