JPH10196932A - Gas proportional controller - Google Patents
Gas proportional controllerInfo
- Publication number
- JPH10196932A JPH10196932A JP346797A JP346797A JPH10196932A JP H10196932 A JPH10196932 A JP H10196932A JP 346797 A JP346797 A JP 346797A JP 346797 A JP346797 A JP 346797A JP H10196932 A JPH10196932 A JP H10196932A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- gas
- spring
- rubber
- spacer
- 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
- Feeding And Controlling Fuel (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガス量を比例制御
し、しかも閉止機能を有するガス比例制御装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas proportional control device for proportionally controlling a gas amount and having a closing function.
【０００２】[0002]
【従来の技術】従来のガス比例制御弁、電磁弁の構成図
を図７に示す。図８は比例制御弁の局部拡大図である。
図において、供給する電流の強さにより発生する磁界の
強さを変化させる電磁コイル１と、この電磁コイル１の
内側に設けられた鉄心２がある。鉄心２の下方に配置す
る永久磁石３はこの電磁コイル１に通電することにより
鉄心２に発生した磁界に反発して移動する。2. Description of the Related Art FIG. 7 shows a configuration diagram of a conventional gas proportional control valve and a conventional solenoid valve. FIG. 8 is a partially enlarged view of the proportional control valve.
In the figure, there are an electromagnetic coil 1 for changing the intensity of a magnetic field generated by the intensity of a supplied current, and an iron core 2 provided inside the electromagnetic coil 1. The permanent magnet 3 disposed below the iron core 2 moves by repelling the magnetic field generated in the iron core 2 when the electromagnetic coil 1 is energized.
【０００３】この永久磁石３を上端で保持し下部に鍔状
の突起５ａを有する筒状の弁体５がある。弁体５の永久
磁石３の下側に取りつけられ大気とガス通路１４を遮断
し、しかもガス一次圧が変動しても大気とバランスをと
るダイヤフラム６がある。受け金具７はダイヤフラム６
を支える弁体５に固定されている。弁ゴム４は弁体５の
上方より突起５ａ上に挿入して固定されている。There is a cylindrical valve element 5 holding the permanent magnet 3 at the upper end and having a flange-shaped projection 5a at the lower part. There is a diaphragm 6 mounted below the permanent magnet 3 of the valve body 5 to shut off the atmosphere from the gas passage 14 and to balance the atmosphere even if the gas primary pressure fluctuates. Receiving bracket 7 is diaphragm 6
Is fixed to the valve body 5 which supports. The valve rubber 4 is inserted and fixed onto the projection 5a from above the valve body 5.
【０００４】弁ゴム４を弁体５に押さえ固定するため
に、下端の弁ゴム４と上端の受け金具７との間に取りつ
けられた弁スプリング８がある。この弁スプリング８
は、平ワッシャ９を介して弁ゴム４を押さえている。比
例制御弁の外郭であるボディー１０にはボディー１０の
一部である弁ゴム４が当接する弁座１１が設けられてい
る。弁体５を下部から弁座１１へ押す、弁体５の下側に
設けられたスプリング１２がボデー１０との間に取りつ
けられている。In order to hold down the valve rubber 4 on the valve body 5, there is a valve spring 8 mounted between the valve rubber 4 at the lower end and the receiving metal fitting 7 at the upper end. This valve spring 8
Presses the valve rubber 4 through the flat washer 9. The body 10, which is the outer shell of the proportional control valve, is provided with a valve seat 11 with which the valve rubber 4, which is a part of the body 10, abuts. A spring 12 provided on the lower side of the valve body 5 that pushes the valve body 5 from below to the valve seat 11 is mounted between the valve body 5 and the body 10.
【０００５】この比例制御弁のガス入口側ＩＮには、ガ
スを遮断する機能を有する電磁弁１３があり、この電磁
弁１３の出口側から弁座１１に通じたボディー１０に穿
設したガス通路１４がある。この比例制御弁には閉止機
能を有しているため、電磁弁１３と合わせて２つの閉止
機能を備えている。On the gas inlet side IN of the proportional control valve, there is provided a solenoid valve 13 having a function of shutting off gas. A gas passage formed in the body 10 from the outlet side of the solenoid valve 13 to the valve seat 11 is provided. There are fourteen. Since this proportional control valve has a closing function, it has two closing functions in addition to the solenoid valve 13.
【０００６】次に、その動作について説明する。電磁コ
イル１に電流が供給されていないときには、鉄心２に磁
界が発生していないため、永久磁石３は鉄心２に引き付
けられる。よって永久磁石３をホールド保持している弁
体５は鉄心２のある上方向に引っ張られる。Next, the operation will be described. When no current is supplied to the electromagnetic coil 1, no magnetic field is generated in the iron core 2, so the permanent magnet 3 is attracted to the iron core 2. Therefore, the valve element 5 holding and holding the permanent magnet 3 is pulled upward with the iron core 2.
【０００７】そして、弁体５に取りつけられている弁ゴ
ム４は、弁座１１に押えつけられる。さらに弁体５の下
部に設けられたスプリング１２が弁体５を上方向に押し
ているため、弁ゴム４と弁座１１とのシールはより強く
なり、ガスの閉止機能を有することができる。[0007] The valve rubber 4 attached to the valve element 5 is pressed against the valve seat 11. Further, since the spring 12 provided at the lower portion of the valve body 5 pushes the valve body 5 upward, the seal between the valve rubber 4 and the valve seat 11 is further strengthened, and a function of closing gas can be provided.
【０００８】電磁コイル１に電流が供給されると、鉄心
２に弁ゴム４を下方向へ押す磁界が発生する。この供給
する電流の強さにより発生する磁界の強さは変化する。
永久磁石３は、常に弁ゴム４を上に押す磁界を持ってい
る。電磁コイル１により発生する磁界とこの永久磁石３
による磁界は反発する方向にあるため、永久磁石３の取
りつけられた弁体５は電磁コイル１の磁界が強くなると
下方向に移動する。When a current is supplied to the electromagnetic coil 1, a magnetic field is generated in the iron core 2 to push the valve rubber 4 downward. The strength of the generated magnetic field changes depending on the strength of the supplied current.
The permanent magnet 3 has a magnetic field that constantly pushes the valve rubber 4 upward. The magnetic field generated by the electromagnetic coil 1 and the permanent magnet 3
Is in the direction of repulsion, so that the valve body 5 to which the permanent magnet 3 is attached moves downward when the magnetic field of the electromagnetic coil 1 becomes stronger.
【０００９】このとき弁ゴム４も下方向に移動するた
め、弁座１１と隙間があきガスが流れる。電磁コイル１
に流す電流の強さを強くするほど発生する磁界が強くな
り、永久磁石３が反発して弁体５が下方向に移動し、弁
ゴム４と弁座１１の間隔が大きくなりガスが多く流れ
る。At this time, the valve rubber 4 also moves downward, so that a gap is formed between the valve seat 11 and the gas to flow. Electromagnetic coil 1
As the intensity of the current flowing through the valve becomes stronger, the generated magnetic field becomes stronger, the permanent magnet 3 repels and the valve element 5 moves downward, the distance between the valve rubber 4 and the valve seat 11 increases, and more gas flows. .
【００１０】弁ゴム４は、弁スプリング８により弁体５
に押えつけられている。弁ゴム４を板等で単に圧縮固定
した別の方法で強制的に固定すると、弁スプリング８で
押させるよりも多目に変形して弁座１１との接触部の角
度が変わったり、あるいは偏心することが多い。すると
弁ゴム４が弁座１１から離脱するときに均一に隙間が開
かなかったり、あるいは一部分だけ接触した状態にな
る。The valve rubber 4 is separated from the valve body 5 by a valve spring 8.
Has been pressed down. If the valve rubber 4 is forcibly fixed by another method in which it is simply compressed and fixed by a plate or the like, the valve rubber 4 is deformed more than it is pressed by the valve spring 8, and the angle of the contact portion with the valve seat 11 changes, or the eccentricity changes. Often do. Then, when the valve rubber 4 separates from the valve seat 11, a gap is not uniformly opened or a state where only a part of the gap is in contact.
【００１１】図９に電磁コイル１の電流−ガス２次圧の
グラフを示す。強制的に固定すると電磁コイル１の電流
に対するガス２次圧の関係においてヒステリシスが大き
くなる。つまり、電磁コイル１の電流を徐々に大きくし
ていくとガス２次圧は十分安定な定常時よりは低目で逆
に下げたとき同じガス２次圧にはならず、定常時より高
目となり、その差であるヒステリシスが大きくなる。FIG. 9 is a graph showing the relationship between the current of the electromagnetic coil 1 and the secondary pressure of the gas. Forcibly fixing increases the hysteresis in the relationship between the current of the electromagnetic coil 1 and the gas secondary pressure. In other words, if the current of the electromagnetic coil 1 is gradually increased, the gas secondary pressure will not be the same gas secondary pressure when the gas secondary pressure is lowered at a lower level than the steady state, and will be higher than the steady state. And the hysteresis, which is the difference between them, increases.
【００１２】また、弁ゴム４を固定しないと、弁ゴム４
が弁体５上を自由に上下に移動するため、ため一定の電
流を供給しても弁ゴム４と弁座１１との間隔は一定にな
らない。このため同じ電磁コイル１の電流であってもガ
ス流量が変化してしまう。従って弁ゴム４を弁スプリン
グ８により押さえる理由は、弁ゴム４を常に同一圧力で
変形させず、しかも弁体５上を移動しないように適度の
強度で固定できるからである。If the valve rubber 4 is not fixed, the valve rubber 4
Moves freely up and down on the valve body 5, so that even if a constant current is supplied, the distance between the valve rubber 4 and the valve seat 11 is not constant. Therefore, even if the current of the same electromagnetic coil 1 is the same, the gas flow rate changes. Therefore, the reason why the valve rubber 4 is pressed by the valve spring 8 is that the valve rubber 4 can be fixed with an appropriate strength so as not to be constantly deformed by the same pressure and to move on the valve body 5.
【００１３】非燃焼時においては、電磁弁１３と比例制
御弁ともに閉弁してガスを遮断している。すると、電磁
弁１３と比例制御弁の弁座１１との間のガス通路１４に
ガスが閉じ込められる。時間が経過すると、このガスが
ダイヤフラム６を通して大気側に通じた上部へ放出さ
れ、徐々に内圧が低下して減圧になる。During non-combustion, both the solenoid valve 13 and the proportional control valve are closed to shut off gas. Then, gas is confined in the gas passage 14 between the solenoid valve 13 and the valve seat 11 of the proportional control valve. After a lapse of time, this gas is released to the upper part which communicates with the atmosphere through the diaphragm 6, and the internal pressure gradually decreases to reduce the pressure.
【００１４】ガスはゴムを通す性質があり、ダイヤフラ
ム６はゴムでできているためこのような現象になる。減
圧になるとダイヤフラム６が下方向に引っ張られる状態
で放置され上への膨み６ａが下向きに崩れて変形してし
まう。このダイヤフラム６が自由に変形する受け金具７
の無いときには、弁ゴム４の締付力が強く、所定の電流
を電磁コイル１に印可しても弁座１１と弁ゴム４の間隔
が小さくなり、ガスの流量が低下してしまい、最小燃焼
時に燃焼量が低下してガスバーナが立ち消えすることが
ある。そのためダイヤフラム６が下部に引っ張られて
も、受け金具７によりその変形を防止する。The gas has the property of passing rubber, and this phenomenon occurs because the diaphragm 6 is made of rubber. When the pressure is reduced, the diaphragm 6 is left in a state of being pulled downward, and the upward bulge 6a collapses downward and deforms. Receiving bracket 7 whose diaphragm 6 is freely deformed
When there is no pressure, the tightening force of the valve rubber 4 is strong, and even if a predetermined current is applied to the electromagnetic coil 1, the distance between the valve seat 11 and the valve rubber 4 becomes small, the gas flow rate decreases, and the minimum combustion occurs. Occasionally, the amount of combustion decreases and the gas burner goes out. Therefore, even if the diaphragm 6 is pulled downward, the deformation is prevented by the receiving fitting 7.
【００１５】図８において、ガス通路の減圧をΔＰと
し、弁座１１の径をＤｖ，受け金具１１の外径をＤｐ，
スプリング１２と永久磁石３の上方向の力をＦとする。
減圧になると、ダイヤフラム６は下方向に引っ張られ、
弁ゴム４は弁座１１に接触している面積の部分（πＤｖ
2／４）が上方向に引っ張られる。下方向に変形したダ
イヤフラム６の圧力を受ける面積は受け金具７と同等の
面積（πＤｐ2／４）となり、弁座１１の面積よりも広
い。従って、弁ゴム４が弁座１１から離脱する開弁減圧
ΔＰは次式で表される。In FIG. 8, the pressure reduction in the gas passage is ΔP, the diameter of the valve seat 11 is Dv, the outer diameter of the receiving fitting 11 is Dp,
The upward force of the spring 12 and the permanent magnet 3 is F.
When the pressure is reduced, the diaphragm 6 is pulled downward,
The valve rubber 4 has a portion of the area in contact with the valve seat 11 (πDv
2/4) is pulled upward. Equivalent area area and the receiving metal 7 which receives the pressure of the diaphragm 6 deforms downward (πDp 2/4) becomes larger than the area of the valve seat 11. Therefore, the valve opening pressure decrease ΔP at which the valve rubber 4 separates from the valve seat 11 is expressed by the following equation.
【００１６】[0016]
【数１】 (Equation 1)
【００１７】そして、下方向に働く力の方が上方向に働
く力より強くなり、弁体５は下方向に移動する。弁ゴム
４は弁スプリング８により弁体５に押えつけられている
が、減圧ΔＰのほうが弁スプリング８により押さえつけ
られる力よりも強いため、弁体５は下っても弁ゴム４は
弁スプリング８を押して弁座１１に接触したままで残
る。そのため、隙間が開くことはなくますます減圧が促
進される。The force acting in the downward direction becomes stronger than the force acting in the upward direction, and the valve element 5 moves downward. Although the valve rubber 4 is pressed against the valve body 5 by the valve spring 8, the pressure reduction ΔP is stronger than the force pressed by the valve spring 8. Therefore, even if the valve body 5 is lowered, the valve rubber 4 holds the valve spring 8. Pressing remains in contact with the valve seat 11. As a result, a gap is not opened, and decompression is further promoted.
【００１８】[0018]
【発明が解決しようとする課題】しかしながら、従来の
比例制御装置では、ガス通路１４のガスが抜け減圧にな
ってもそれを解消する手段がなく、減圧の現象が進行す
るという問題点がある。そうなると、受け金具７があっ
ても強い圧力でダイヤフラム６が下部に引っ張られるた
め、ダイヤフラム６の一部に変形が起こる。However, the conventional proportional control device has a problem that even if the gas in the gas passage 14 is released and the pressure is reduced, there is no means for eliminating the pressure reduction, and the pressure reduction phenomenon proceeds. In this case, the diaphragm 6 is pulled downward by a strong pressure even if the metal fitting 7 is present, so that a part of the diaphragm 6 is deformed.
【００１９】また減圧により、弁ゴム４が弁座１１には
まり込むような現象になり、電磁コイル１に通電しても
開弁しないため、ガスを流すことができない。Further, the decompression causes a phenomenon that the valve rubber 4 gets stuck in the valve seat 11, and the valve does not open even when the electromagnetic coil 1 is energized, so that gas cannot flow.
【００２０】[0020]
【課題を解決するための手段】本発明は上記課題を解決
するために、弁ゴムと受け金具の間にスペーサーを設け
ている。そのスペーサーは、弁ゴムを強制的に固定する
のではなく、隙間を組立誤差を吸収できる程度に０から
微小寸法だけ設けるようになっている。According to the present invention, in order to solve the above-mentioned problems, a spacer is provided between a valve rubber and a receiving fitting. The spacer is not forcibly fixing the valve rubber, but is provided with a gap having a size of 0 to a small dimension so as to absorb an assembly error.
【００２１】上記発明によれば、閉弁状態で放置されガ
ス通路からガスが放出されて減圧になったとき、弁体が
下方向に移動した際に弁ゴムも同じように移動して弁座
から離れ隙間が発生するため、減圧が解消される。よっ
てダイヤフラムの変形を防止でき、長期間放置されても
所定の電流を供給したら設定通りのガス流量を得ること
ができる。According to the above invention, when the valve is left closed and the gas is released from the gas passage to reduce the pressure, the valve rubber moves in the same manner when the valve body moves downward, and the valve seat moves. , A pressure gap is eliminated because a gap is generated. Therefore, the deformation of the diaphragm can be prevented, and the gas flow as set can be obtained if a predetermined current is supplied even if the diaphragm is left for a long time.
【００２２】[0022]
【発明の実施の形態】上記の課題を解決するために請求
項１に記載の発明は、鉄心を囲う電流の強さに応じて鉄
心より下方の磁界の強さを制御する電磁コイルと、この
磁界に反発する磁界を持ち、前期鉄心の下方に配置する
永久磁石と、この永久磁石を上端で保持して下部に鍔状
の突起を有する筒状の弁体と、この弁体の前記永久磁石
の下側に気密に固定し、上方の大気圧と下方のガス一次
圧のバランスをとるダイヤフラムと、このダイヤフラム
を下方で支える受け金具と、前記弁体の上方より前記突
起上に挿入してガスを遮断する弁ゴムと、この弁ゴムが
当接する弁座を有したボディーと、このボディーのガス
入口でガスを遮断する電磁弁とこの電磁弁の出口側から
前記弁座に通じた前記ボディーに穿設したガス通路と、
前記受け金具に上端を当接し下端は平ワッシャを介して
前記弁ゴムに当接して付勢する弁スプリングと、この弁
スプリングが閉止時の設定長さに対し、組み立て誤差を
吸収できるレベルに短い長さを有し、前記スプリングと
並列に前記弁体に嵌入したスペーサーを有しているもの
である。BRIEF SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an invention according to claim 1 is an electromagnetic coil for controlling the strength of a magnetic field below an iron core according to the strength of a current surrounding the iron core. A permanent magnet having a magnetic field that repels the magnetic field and disposed below the iron core; a cylindrical valve body having a flange-shaped projection at the bottom while holding the permanent magnet at an upper end; and the permanent magnet of the valve body A diaphragm which is hermetically fixed to the lower side and balances the upper atmospheric pressure and the lower gas primary pressure, a metal fitting for supporting the diaphragm below, and a gas inserted above the valve from above the valve body onto the projection. A valve rubber for shutting off the valve, a body having a valve seat with which the valve rubber comes into contact, an electromagnetic valve for shutting off gas at a gas inlet of the body, and the body communicating with the valve seat from an outlet side of the electromagnetic valve. A drilled gas passage,
A valve spring that abuts the upper end and the lower end abuts on the valve rubber via a flat washer and urges the lower end thereof through a flat washer, and the valve spring is short enough to absorb an assembly error with respect to a set length when the valve spring is closed. It has a length and has a spacer fitted in the valve body in parallel with the spring.
【００２３】そして、閉弁時ガス通路からガスが抜けて
減圧になっても、開弁するため減圧状態が促進されるこ
とはなく、ダイヤフラムの変形を防止して最小燃焼時に
設定のガス流量を流すことが可能になり、ガスバーナの
立ち消えの心配もなくなる。Even if gas is released from the gas passage when the valve is closed and the pressure is reduced, the valve is opened, so that the depressurized state is not promoted. The deformation of the diaphragm is prevented and the set gas flow rate during the minimum combustion is reduced. It is possible to flow and there is no need to worry about the gas burner going out.
【００２４】請求項２に記載の発明は、前記平ワッシャ
に代えて前記弁ゴムの上端の位置で前記弁体に溝を設け
て摺動自在に嵌入したスプリング受けを有し、このスプ
リング受けが溝の下端に当接したときは前記弁スプリン
グが閉止時の設定長さとなり、溝の上端に当接したとき
は前記スペーサーと同一寸法の前記受け金具からの位置
となり、前記スペーサーを除外したものである。According to a second aspect of the present invention, there is provided a spring receiver in which a groove is formed in the valve body at the upper end of the valve rubber instead of the flat washer and the valve body is slidably fitted. When the valve spring comes into contact with the lower end of the groove, the valve spring has the set length when the valve is closed, and when it comes into contact with the upper end of the groove, the valve spring is located at the same size as the spacer, excluding the spacer. It is.
【００２５】これにより、スペーサーを削減することが
でき、安価にこの構成を実現できる。スペーサーを設け
る必要がないため、微少な隙間を精度よく確保でき、減
圧になってもより確実に解消できる。As a result, the number of spacers can be reduced, and this configuration can be realized at low cost. Since there is no need to provide a spacer, a minute gap can be secured with high precision, and the gap can be more reliably eliminated even if the pressure is reduced.
【００２６】以下、本発明の実施例について図面を参照
して説明する。 （実施例１）図１は本発明の実施例１の比例制御装置の
電磁弁の構成図である。図２は比例制御装置の要部拡大
図である。図において、供給する電流の強さにより発生
する磁界の強さを変化させる電磁コイル１と、電磁コイ
ル１の内側に設けられている鉄心２がある。鉄心２の下
方に配置する永久磁石３はこの電磁コイル１に通電する
ことにより鉄心２に発生した磁界に反発して下方へ移動
する。Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a configuration diagram of a solenoid valve of a proportional control device according to Embodiment 1 of the present invention. FIG. 2 is an enlarged view of a main part of the proportional control device. In the figure, there are an electromagnetic coil 1 that changes the intensity of a magnetic field generated by the intensity of a supplied current, and an iron core 2 provided inside the electromagnetic coil 1. When the permanent magnet 3 disposed below the iron core 2 is energized by the electromagnetic coil 1, the permanent magnet 3 moves downward by repelling the magnetic field generated in the iron core 2.
【００２７】この永久磁石３を上端で保持し下部に鍔状
の突起５ａを有する筒状の弁体５がある。弁体５の永久
磁石３の下側に取りつけられた大気とガス通路を遮断し
しかもガス一次圧が変動しても大気とバランスをとるダ
イヤフラム６がある。受け金具７はダイヤフラム６を支
える弁体５に固定されている。弁ゴム４は弁体５の上方
より突起５ａ上に挿入している。There is a cylindrical valve element 5 holding the permanent magnet 3 at the upper end and having a flange-shaped projection 5a at the lower part. There is a diaphragm 6 which is provided below the permanent magnet 3 of the valve body 5 and which shuts off the gas passage from the atmosphere and balances the atmosphere even if the gas primary pressure fluctuates. The receiving member 7 is fixed to the valve body 5 that supports the diaphragm 6. The valve rubber 4 is inserted from above the valve body 5 onto the projection 5a.
【００２８】弁ゴム４を突起５ａに押さえ固定するため
に下端に平ワッシャ９を介して弁ゴム４に当接し、上端
は受け金具７に当接して付勢する弁スプリング８があ
る。In order to press and fix the valve rubber 4 on the projection 5a, there is provided a valve spring 8 which abuts against the valve rubber 4 via a flat washer 9 at the lower end and presses against the receiving metal fitting 7 at the upper end.
【００２９】また、弁スプリング８と並列に、しかも弁
ゴム４と受け金具７との間にこの弁スプリング８が閉止
時の設定長さに対し、組み立て誤差を吸収できるレベル
に短い長さを有するスペーサー２０が設けられている。In addition, the valve spring 8 has a short length in parallel with the valve spring 8 and between the valve rubber 4 and the receiving member 7 to a level at which assembly errors can be absorbed with respect to a set length when the valve spring 8 is closed. A spacer 20 is provided.
【００３０】図３はスペーサー２０の断面を示してい
る。スペーサー２０は、弁ゴム４が突起５ａに密着し、
平ワッシャ９が弁ゴム４に接触した状態で隙間０から微
小の間隔が開くような寸法になっている。比例制御弁の
外郭であるボディー１０にはボディー１０の一部である
弁ゴム４が当接する弁座１１が設けられている。弁体５
を下部から弁座１１側に押すスプリング１２がボデー１
０との間に取りつけられている。FIG. 3 shows a cross section of the spacer 20. In the spacer 20, the valve rubber 4 comes into close contact with the projection 5a,
The dimensions are such that a minute gap is opened from the gap 0 when the flat washer 9 is in contact with the valve rubber 4. The body 10, which is the outer shell of the proportional control valve, is provided with a valve seat 11 with which the valve rubber 4, which is a part of the body 10, abuts. Valve 5
The spring 12 that pushes the lower part toward the valve seat 11 from the lower part
It is installed between 0.
【００３１】この比例制御弁のガス入口ＩＮ側には、ガ
スを遮断する機能を有する電磁弁１３があり、この電磁
弁１３の出口側から弁座１１に通じるボディー１０に穿
設したガス通路１４がある。従って比例制御弁とともに
２つの閉止機能を備えている。On the gas inlet IN side of the proportional control valve, there is provided an electromagnetic valve 13 having a function of shutting off gas. A gas passage 14 formed in the body 10 communicating with the valve seat 11 from the outlet side of the electromagnetic valve 13 is provided. There is. Therefore, it has two closing functions together with the proportional control valve.
【００３２】次に、その動作について説明する。電磁コ
イル１に電流が供給されていないときには、鉄心２に磁
界が発生していないため、永久磁石３は鉄心２に引き付
けられる。よって永久磁石３をホールドしている弁体５
は鉄心２の方向に引っ張られる。Next, the operation will be described. When no current is supplied to the electromagnetic coil 1, no magnetic field is generated in the iron core 2, so the permanent magnet 3 is attracted to the iron core 2. Therefore, the valve element 5 holding the permanent magnet 3
Is pulled in the direction of the iron core 2.
【００３３】弁体５に取りつけられている弁ゴム４は、
弁座１１に押えつけられる。さらに弁体５の下部に設け
られたスプリング１２が弁体５を上方向に押しているた
め、さらに弁ゴム４と弁座１１とのシールは強くなり、
ガスの閉止機能を有することができる。The valve rubber 4 attached to the valve body 5 is
It is pressed against the valve seat 11. Further, since the spring 12 provided at the lower part of the valve body 5 pushes the valve body 5 upward, the seal between the valve rubber 4 and the valve seat 11 is further strengthened,
It can have a gas closing function.
【００３４】図２において、ガス通路の減圧をΔＰと
し、弁座１１の径をＤｖ受け金具１１の外径をＤｐ、ス
プリング１２と永久磁石３の上方向の力をＦとする。減
圧になると、ダイヤフラム６は下方向に引っ張られ、弁
ゴム４は弁座１１に接触している面積の部分（πＤｖ2
／４）が上方向に引っ張られる。下方向に変形したダイ
ヤフラム６の圧力を受ける面積は受け金具７と同等の面
積（πＤｐ2／４）となり、弁座１１の面積よりも広
い。従って、弁ゴム４が弁座１１から離脱する開弁減圧
ΔＰは次式で表される。In FIG. 2, the pressure in the gas passage is represented by ΔP, the diameter of the valve seat 11 is represented by Dp, the outer diameter of the metal fitting 11 is represented by Dp, and the upward force of the spring 12 and the permanent magnet 3 is represented by F. When the pressure is reduced, the diaphragm 6 is pulled downward, and the valve rubber 4 is brought into contact with the valve seat 11 in the area (πDv 2
/ 4) is pulled upward. Equivalent area area and the receiving metal 7 which receives the pressure of the diaphragm 6 deforms downward (πDp 2/4) becomes larger than the area of the valve seat 11. Therefore, the valve opening pressure decrease ΔP at which the valve rubber 4 separates from the valve seat 11 is expressed by the following equation.
【００３５】[0035]
【数２】 (Equation 2)
【００３６】そして、下方向に働く力の方が上方向に働
く力より強くなり、弁体５は下方向に移動する。弁ゴム
４は弁スプリング８により弁体５に押えつけられている
ため、弁体５は下方向に移動する際、同時にスペーサー
２０も移動する。スペーサー２０、平ワッシャ９と弁ゴ
ム４の隙間が０から微小に設定されている。Then, the force acting in the downward direction is stronger than the force acting in the upward direction, and the valve element 5 moves downward. Since the valve rubber 4 is pressed against the valve body 5 by the valve spring 8, when the valve body 5 moves downward, the spacer 20 also moves at the same time. The gap between the spacer 20, the flat washer 9 and the valve rubber 4 is set to be minute from zero.
【００３７】つまり、この寸法は弁スプリング８が閉止
時の設定長さに対して組み立て誤差を吸収できるレベル
に短い長さを有しているため、スペーサー２０により弁
ゴム４、平ワッシャ９が下方向に押され、弁ゴム４は弁
座１１から離れ、隙間が発生して弁ゴム４の下流側から
ガス通路１４に大気が侵入して減圧は解消される。That is, since the valve spring 8 has a length short enough to absorb an assembly error with respect to the set length when the valve spring 8 is closed, the spacer 20 lowers the valve rubber 4 and the flat washer 9. The valve rubber 4 is pushed in the direction, the valve rubber 4 is separated from the valve seat 11, a gap is generated, and the air enters the gas passage 14 from the downstream side of the valve rubber 4, and the decompression is eliminated.
【００３８】図４は、実施例１の比例制御装置の第２の
方法の要部拡大図である。図５はスペーサー２１の断面
図である。実施例１と異なる点は、スペーサー２１に弁
スプリング８の受け部２２を設けたところである。図４
において、スペーサー２０の外側に弁スプリング８を設
け、スペーサー２１の受け部２２を介して弁ゴム４を弁
体５に押さえつける。従って平ワッシャ９とスペーサー
２０が一体になっている。FIG. 4 is an enlarged view of a main part of a second method of the proportional control device according to the first embodiment. FIG. 5 is a sectional view of the spacer 21. The difference from the first embodiment is that the spacer 21 is provided with the receiving portion 22 of the valve spring 8. FIG.
, The valve spring 8 is provided outside the spacer 20, and the valve rubber 4 is pressed against the valve element 5 via the receiving portion 22 of the spacer 21. Therefore, the flat washer 9 and the spacer 20 are integrated.
【００３９】動作は、減圧になると、ダイヤフラム６は
下部に引っ張られ、弁ゴム４は弁座１１の面積の部分が
上方向に引っ張られる。ダイヤフラム６の受圧面積は弁
座１１の面積よりも広いため、下方向に働く力が強くな
り、弁体５は下方向に移動する。In operation, when the pressure is reduced, the diaphragm 6 is pulled downward, and the valve rubber 4 is pulled upward in the area of the valve seat 11. Since the pressure receiving area of the diaphragm 6 is larger than the area of the valve seat 11, the force acting in the downward direction increases, and the valve element 5 moves downward.
【００４０】同時にスペーサー２１も移動し、スペーサ
ー２１と弁ゴム４の隙間が組立誤差を吸収して０から微
小なため、弁スプリング８の付勢を受けたスペーサー２
１に弁ゴム４が下方向に押され、弁ゴム４は弁座１１か
ら離れ、隙間があき減圧は解消される。At the same time, the spacer 21 also moves, and the gap between the spacer 21 and the valve rubber 4 absorbs assembly errors and is very small from 0.
1, the valve rubber 4 is pushed downward, the valve rubber 4 is separated from the valve seat 11, and a gap is created so that the reduced pressure is eliminated.
【００４１】平ワッシャ９がスペーサ２０と一体なため
に、全長Ｈ寸法は誤差が少なくなり、前記隙間をより少
なくできる。従って、弁ゴム４が突起５ａから浮き上る
量を少なくでき、最小燃焼時に設定のガス流量の減小を
抑えることができる。Since the flat washer 9 is integrated with the spacer 20, the error in the overall H dimension is reduced, and the gap can be further reduced. Therefore, the amount by which the valve rubber 4 rises from the projection 5a can be reduced, and the decrease in the set gas flow rate during the minimum combustion can be suppressed.
【００４２】（実施例２）図６は、本発明の実施例２の
比例制御装置の要部拡大図である。弁体２５の弁ゴム４
の上端の位置に溝２５ａ設け、溝幅Ｗの中で摺動自在に
嵌入したスプリング受け２６を有している。このスプリ
ング受け２６が溝２５ａの下端に当接したときは前記弁
スプリング８が閉止時の設定長さとなり、溝２５ａの上
端に当接したときは前記スペーサー２１と同一寸法の受
け金具７からの位置となり、前記スペーサー２１を除外
している。(Embodiment 2) FIG. 6 is an enlarged view of a main part of a proportional control device according to Embodiment 2 of the present invention. Valve rubber 4 of valve body 25
A groove 25a is provided at the upper end of the groove, and a spring receiver 26 is slidably fitted within the groove width W. When the spring receiver 26 comes into contact with the lower end of the groove 25a, the valve spring 8 has the set length at the time of closing. When the spring receiver 26 comes into contact with the upper end of the groove 25a, the valve spring 8 has the same size as the spacer 21 from the receiving metal 7 having the same dimensions. Position, and the spacer 21 is excluded.
【００４３】動作は、ガス通路１４が減圧になると弁体
２５は下方向に移動する。このとき弁ゴム４は減圧によ
り上方向の力が働き弁座１１に残る。さらに減圧が進む
と弁体２５の溝２５ａの上端にスプリング受け２６が移
動し、この溝２５ａの上端がスプリング受け２６、弁ゴ
ム４を押して、弁ゴム４が弁座１１から離脱して、ガス
通路１４に大気が侵入して減圧が解消される。In operation, when the pressure in the gas passage 14 is reduced, the valve body 25 moves downward. At this time, an upward force acts on the valve rubber 4 due to the reduced pressure, and remains on the valve seat 11. When the pressure is further reduced, the spring receiver 26 moves to the upper end of the groove 25a of the valve body 25, and the upper end of the groove 25a pushes the spring receiver 26 and the valve rubber 4, so that the valve rubber 4 is separated from the valve seat 11, and the gas is released. The air enters the passage 14 and the pressure is reduced.
【００４４】溝２５ａの大きさＷはスプリング受け２６
の肉厚Ｂに組み立てばらつき（Ｗ−Ｂ）を考慮して加え
た程度であり、溝幅Ｗとスプリング受け２６の肉厚Ｂの
寸法管理をより精密にでき、小さな隙間（Ｗ−Ｂ）によ
って低い減圧で開弁させることができる。The size W of the groove 25 a is
The thickness B is added to the thickness B in consideration of the assembly variation (WB). The dimension control of the groove width W and the thickness B of the spring receiver 26 can be performed more precisely, and the small gap (WB) can be obtained. The valve can be opened at low pressure.
【００４５】[0045]
【発明の効果】以上の説明から明らかなように、本発明
の請求項１記載の発明の比例制御装置によれば、次の効
果が得られる。As is apparent from the above description, the following effects can be obtained by the proportional control device according to the first aspect of the present invention.
【００４６】ガスを使用したあと長期間放置され、ダイ
ヤフラムからガスが抜けてガス通路が減圧になっても、
スペーサーと弁ゴムの隙間が微小なため、弁ゴムがスペ
ーサーによって下方向に押されて弁座から離れ、隙間が
発生して減圧は解消される。よってダイヤフラムの変形
が防止され、電磁コイルに所定の電流を供給すると設定
通りのガス量を得られる。特に微小な隙間で制御する最
小燃焼においても、ガス流量の低下はなく、立ち消えを
防止できる。Even if the gas is left for a long time after the gas is used and the gas is released from the diaphragm and the pressure in the gas passage is reduced,
Since the gap between the spacer and the valve rubber is very small, the valve rubber is pushed downward by the spacer and separates from the valve seat, and a gap is generated to reduce the pressure reduction. Therefore, deformation of the diaphragm is prevented, and a predetermined amount of gas can be obtained by supplying a predetermined current to the electromagnetic coil. In particular, even in the minimum combustion controlled by the minute gap, the gas flow rate does not decrease and the extinguishing can be prevented.
【００４７】また請求項２記載の発明によれば、弁体に
溝を設けこの溝にスプリング受けを挿入している。従っ
てスペーサーに比べて小寸法の溝幅やスプリング受けの
より精密な寸法管理ができ、減圧になっても確実に早い
段階でダイヤフラムの変形を抑えて解消できる。According to the second aspect of the present invention, a groove is provided in the valve body, and a spring receiver is inserted into the groove. Therefore, it is possible to more precisely control the groove width and the size of the spring receiver as compared with the spacer, and even if the pressure is reduced, the deformation of the diaphragm can be suppressed and eliminated at an early stage without fail.
【図１】本発明の実施例１の比例制御装置の断面図FIG. 1 is a sectional view of a proportional control device according to a first embodiment of the present invention.
【図２】同装置の局部拡大断面図FIG. 2 is an enlarged partial cross-sectional view of the device.
【図３】同装置のスペーサーの断面図FIG. 3 is a sectional view of a spacer of the apparatus.
【図４】同装置の他の局部拡大断面図FIG. 4 is another enlarged cross-sectional view of the same device.
【図５】同装置のスペーサーの断面図FIG. 5 is a sectional view of a spacer of the apparatus.
【図６】本発明の実施例２の比例制御装置の局部拡大断
面図FIG. 6 is a partially enlarged sectional view of a proportional control device according to a second embodiment of the present invention;
【図７】従来の比例制御装置の断面図FIG. 7 is a sectional view of a conventional proportional control device.
【図８】同装置の局部拡大断面図FIG. 8 is an enlarged partial cross-sectional view of the device.
【図９】同装置の電磁コイルの電流とガス２次圧との関
係を示す特性図FIG. 9 is a characteristic diagram showing a relationship between a current of an electromagnetic coil of the apparatus and a gas secondary pressure.
１ 電磁コイル ３ 永久磁石 ４ 弁ゴム ５、２５ 弁体 ６ ダイヤフラム ７ 受け金具 ８ 弁スプリング ９ 平ワッシャ １０ ボディー １３ 電磁弁 １４ ガス通路 ２０、２１ スペーサ ２５ａ 溝 ２６ スプリング受け DESCRIPTION OF SYMBOLS 1 Electromagnetic coil 3 Permanent magnet 4 Valve rubber 5, 25 Valve body 6 Diaphragm 7 Reception fitting 8 Valve spring 9 Flat washer 10 Body 13 Solenoid valve 14 Gas passage 20, 21 Spacer 25a Groove 26 Spring receiver
Claims (2)
方の磁界の強さを制御する電磁コイルと、この磁界に反
発する磁界を有し、前記鉄心の下方に配置する永久磁石
と、この永久磁石を上端で保持して下部に鍔状の突起を
有する筒状の弁体と、この弁体の前記永久磁石の下側に
気密に固定し、上方の大気圧と下方のガス一次圧のバラ
ンスをとるダイヤフラムと、このダイヤフラムを下側で
支える受け金具と、前記弁体の上方より前記突起上に挿
入してガスを遮断する弁ゴムと、この弁ゴムが当接する
弁座を有したボディーと、このボディーのガス入口でガ
スを遮断する電磁弁とこの電磁弁の出口側から前記弁座
に通じた前記ボディーに穿設したガス通路と、前記受け
金具に上端を当接し下端は平ワッシャを介して前記弁ゴ
ムに当接して付勢する弁スプリングと、この弁スプリン
グが閉止時の設定長さに対し、組み立て誤差を吸収でき
るレベルに短い長さを有し、前記スプリングと並列に前
記弁体に嵌入したスペーサーを備えるガス比例制御装
置。1. An electromagnetic coil for controlling the strength of a magnetic field below an iron core according to the strength of a current surrounding the iron core, and a permanent magnet having a magnetic field repelling the magnetic field and disposed below the iron core. A cylindrical valve body holding the permanent magnet at the upper end and having a flange-shaped protrusion at the lower part, and hermetically fixed below the permanent magnet of the valve body so that the upper atmospheric pressure and the lower gas primary It has a diaphragm for balancing pressure, a metal fitting for supporting the diaphragm on the lower side, a valve rubber inserted above the valve body onto the projection to shut off gas, and a valve seat for contacting the valve rubber. Body, a solenoid valve that shuts off gas at the gas inlet of the body, a gas passage formed in the body that communicates with the valve seat from the outlet side of the solenoid valve, and an upper end abutting on the receiving fitting and a lower end. Abuts against the valve rubber via flat washer and urges A gas proportional control device comprising: a valve spring having a length that is short enough to absorb an assembly error with respect to a set length of the valve spring when the valve spring is closed; and a spacer fitted in the valve body in parallel with the spring. .
弁体に溝を設けて摺動自在に嵌入したスプリング受けを
有し、このスプリング受けが溝の下端に当接したときは
弁スプリングが閉止時の設定長さとなり、溝の上端に当
接したときはスペーサーと同一寸法の受け金具からの位
置となり、前記スペーサーを除外した請求項１記載のガ
ス比例制御装置。2. A spring having a valve body provided with a groove at the upper end of the valve rubber and slidably fitted therein in place of the flat washer. When the spring receiver comes into contact with the lower end of the groove, the valve is closed. 2. The gas proportional control device according to claim 1, wherein the spring has a set length when closed, and when the spring comes into contact with an upper end of the groove, the spring is located at a position from a receiving fitting having the same dimensions as the spacer, and the spacer is excluded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00346797A JP3800701B2 (en) | 1997-01-13 | 1997-01-13 | Gas proportional control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00346797A JP3800701B2 (en) | 1997-01-13 | 1997-01-13 | Gas proportional control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10196932A true JPH10196932A (en) | 1998-07-31 |
| JP3800701B2 JP3800701B2 (en) | 2006-07-26 |
Family
ID=11558144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00346797A Expired - Fee Related JP3800701B2 (en) | 1997-01-13 | 1997-01-13 | Gas proportional control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3800701B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499832A (en) * | 2015-09-08 | 2017-03-15 | 青岛海尔洗衣机有限公司 | A kind of water valve and the washing machine of this water valve is installed |
| CN114165628A (en) * | 2021-12-15 | 2022-03-11 | 广东美的厨房电器制造有限公司 | Gas oven intelligent valve and gas oven |
-
1997
- 1997-01-13 JP JP00346797A patent/JP3800701B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499832A (en) * | 2015-09-08 | 2017-03-15 | 青岛海尔洗衣机有限公司 | A kind of water valve and the washing machine of this water valve is installed |
| CN106499832B (en) * | 2015-09-08 | 2019-10-01 | 青岛海尔洗衣机有限公司 | A kind of water valve and the washing machine for being equipped with this water valve |
| CN114165628A (en) * | 2021-12-15 | 2022-03-11 | 广东美的厨房电器制造有限公司 | Gas oven intelligent valve and gas oven |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3800701B2 (en) | 2006-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6526951B2 (en) | Electromagnetic valve for ORVR system | |
| US7040595B2 (en) | Constant flow rate expansion valve | |
| JPH10281310A (en) | Valve | |
| JPH09317927A (en) | Pneumatic control valve | |
| JPH10196932A (en) | Gas proportional controller | |
| JP3668605B2 (en) | Pilot kick solenoid valve | |
| JPH09329254A (en) | Solenoid valve | |
| JPH10227439A (en) | Gas proportional controller | |
| JP5356854B2 (en) | Solenoid control valve | |
| JP2001041340A (en) | Solenoid valve | |
| JP4053846B2 (en) | Electric expansion valve | |
| JP2006057819A (en) | Electromagnetic proportional valve | |
| US4494559A (en) | Negative pressure control apparatus | |
| JP4262036B2 (en) | Constant flow expansion valve | |
| JPH09178027A (en) | Solenoid valve | |
| JP2890883B2 (en) | Solenoid valve for fluid control | |
| JP2559679Y2 (en) | Shut-off valve | |
| JP4217585B2 (en) | Solenoid proportional valve | |
| JPS61258115A (en) | Current-pressure transducer | |
| JP2003227578A (en) | Solenoid feed water valve | |
| JP3276124B2 (en) | Flow control valve | |
| JPH0384285A (en) | Flow rate regulating valve with shutoff function | |
| JP2841576B2 (en) | Automatic on-off valve | |
| JP2998432B2 (en) | Shut-off valve | |
| JPH07113432B2 (en) | Proportional control valve for gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD01 | Notification of change of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7421 Effective date: 20031212 |
|
| RD01 | Notification of change of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7421 Effective date: 20050623 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060317 |
|
| 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: 20060411 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20060424 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090512 Year of fee payment: 3 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100512 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100512 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100512 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100512 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110512 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110512 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120512 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |