JPS6225764Y2 - - Google Patents
Info
- Publication number
- JPS6225764Y2 JPS6225764Y2 JP12386879U JP12386879U JPS6225764Y2 JP S6225764 Y2 JPS6225764 Y2 JP S6225764Y2 JP 12386879 U JP12386879 U JP 12386879U JP 12386879 U JP12386879 U JP 12386879U JP S6225764 Y2 JPS6225764 Y2 JP S6225764Y2
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- spool
- valve
- output port
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
- Control Of Fluid Pressure (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、パイロツト式の電磁制御減圧弁に関
するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pilot type electromagnetically controlled pressure reducing valve.
従来の技術
従来、供給ポートと、出力ポートとの間の弁座
に接離する弁体をパイロツト弁によるダイヤフラ
ムの駆動変位量に応じて制御するようにした減圧
弁は公知である。2. Description of the Related Art Conventionally, a pressure reducing valve is known in which a valve body that approaches and separates from a valve seat between a supply port and an output port is controlled in accordance with the amount of drive displacement of a diaphragm by a pilot valve.
また、上記パイロツト弁として使用可能な減圧
弁として、電流値に比例した吸引力が得られるソ
レノイドを利用し、流体の出力圧をその電流値に
比例した圧力に設定するため、ソレノイドの吸引
力とスプリングの力及び出力ポートからのフイー
ドバツク圧力をバランスさせるようにしたもの
は、例えば特公昭47−27850号公報により公知で
ある。 In addition, as a pressure reducing valve that can be used as the pilot valve mentioned above, a solenoid that can obtain a suction force proportional to the current value is used, and the output pressure of the fluid is set to a pressure proportional to the current value, so the suction force of the solenoid and A device in which the force of the spring and the feedback pressure from the output port are balanced is known, for example, from Japanese Patent Publication No. 47-27850.
しかしながら、上記公知の減圧弁においては、
一般に、流体圧力を調圧用スプリングと対抗させ
るようにした構成を有し、従つて流量特性におい
てばね定数による圧力降下が生じるという問題を
避けることができなかつた。 However, in the above-mentioned known pressure reducing valve,
Generally, the configuration is such that the fluid pressure is opposed to the pressure regulating spring, and therefore, the problem of pressure drop due to the spring constant cannot be avoided in the flow characteristics.
考案が解決しようとする問題点
本考案は、流体圧力を調圧用スプリングの付勢
力と対抗させることなく、ばね定数をもたないソ
レノイドの吸引力とフイードバツクされた２次圧
力とを直接対抗させることにより、出力特性を改
善したパイロツト式の減圧弁を得ようとするもの
である。Problems to be Solved by the Invention The invention aims to directly counteract the suction force of a solenoid, which has no spring constant, with the fed-back secondary pressure, without counteracting the fluid pressure with the biasing force of the pressure regulating spring. This is an attempt to obtain a pilot type pressure reducing valve with improved output characteristics.
問題点を解決するための手段
上記目的を達成するため、本考案の電磁制御減
圧弁は、供給ポートと出力ポートとの間の弁座に
接離する弁体をダイヤフラムの駆動変位量に応じ
て制御する主弁部と、上記ダイヤフラムを駆動変
位させるパイロツト弁部とを備えたパイロツト式
の減圧弁において、上記パイロツト弁部に、上記
供給ポートに連通するパイロツト供給ポート、上
記ダイヤフラムの駆動圧力室に連通するパイロツ
ト出力ポート、及びリリーフポートを設けると共
に、それらのポート間の開口量を制御するスプー
ルを設け、このスプールに、通電量に比例した吸
引力が作用するソレノイドの可動鉄心を連結する
と共に、該スプールの端部に対面し且つ上記主弁
部の出力ポートに連通させて上記可動鉄心の吸着
力に対抗するフイードバツク圧力をスプールに作
用させる圧力室を設けることにより構成される。Means for Solving the Problems In order to achieve the above object, the electromagnetically controlled pressure reducing valve of the present invention moves the valve body that approaches and separates from the valve seat between the supply port and the output port according to the amount of drive displacement of the diaphragm. A pilot pressure reducing valve comprising a main valve section for controlling and a pilot valve section for driving and displacing the diaphragm, wherein the pilot valve section has a pilot supply port communicating with the supply port, and a pressure chamber for driving the diaphragm. A pilot output port and a relief port are provided which communicate with each other, and a spool is provided to control the opening amount between these ports, and a movable iron core of a solenoid is connected to this spool to which a suction force proportional to the amount of current is applied. It is constructed by providing a pressure chamber facing the end of the spool and communicating with the output port of the main valve section to apply feedback pressure to the spool that counteracts the suction force of the movable iron core.
作 用
上記構成を有する本考案の減圧弁においては、
ソレノイドに対し所要の通電量において通電する
と、可動鉄心に対してそのストロークとは無関係
に一定の吸引力が作用し、これがスプールの端部
に対面する圧力室へのフイードバツク圧力とバラ
ンスしてスプールが変位せしめられ、パイロツト
出力ポートに通電量に応じた一定の減圧出力が得
られる。而して、上記ソレノイドの吸引力とフイ
ードバツク圧力と対抗させているため、ばねの付
勢力を流体圧力と対抗させる場合のようにばね定
数の影響を受けることがなく、出力特性が改善さ
れる。なお、パイロツト弁部における復帰ばね
は、非通電時にスプールを復帰させるための弱い
付勢力のもので、出力特性に格別の影響を与える
ものではない。Function In the pressure reducing valve of the present invention having the above configuration,
When the solenoid is energized with the required amount of current, a constant suction force acts on the movable core regardless of its stroke, and this balances with the feedback pressure to the pressure chamber facing the end of the spool, causing the spool to move. A constant reduced pressure output is obtained at the pilot output port according to the amount of current supplied. Since the suction force of the solenoid is opposed to the feedback pressure, the output characteristics are improved without being affected by the spring constant unlike when the urging force of the spring is opposed to the fluid pressure. Note that the return spring in the pilot valve section has a weak biasing force for returning the spool when the power is not energized, and does not particularly affect the output characteristics.
考案の効果
上述した本考案によれば、極めて簡単な構造に
よつて出力特性のよいパイロツト式の減圧弁を得
ることができる。Effects of the Invention According to the present invention described above, a pilot type pressure reducing valve with good output characteristics can be obtained with an extremely simple structure.
実施例
以下、本考案を図示の実施例に基づいて詳細に
説明するに、第１図において、１は減圧した出力
を採り出すダイヤフラム駆動型の主弁部、２はそ
のダイヤフラムを駆動する電磁制御型のパイロツ
ト弁部である。EMBODIMENTS The present invention will be explained in detail below based on illustrated embodiments. In FIG. 1, 1 is a diaphragm-driven main valve section that produces a reduced pressure output, and 2 is an electromagnetic control unit that drives the diaphragm. It is a type of pilot valve part.
上記主弁部１は、相互に連通する供給ポート３
と出力ポート４とを備え、これらの間に形設した
弁座５に対して下方から弁体６をばね７の付勢力
で圧接し、該弁体６に立設したロツド８の頭部
を、ダイヤフラム９に設けたロツド受け１０によ
り接離可能に支受させている。従つて、弁座５の
開口量はばね７の付勢力に抗したダイヤフラム９
の下方への駆動変位量によつて制御される。 The main valve section 1 has supply ports 3 that communicate with each other.
and an output port 4, and a valve body 6 is pressed from below against a valve seat 5 formed between these by the biasing force of a spring 7, and the head of a rod 8 installed upright on the valve body 6 is pressed against a valve seat 5 formed between these. , is supported by a rod receiver 10 provided on the diaphragm 9 so as to be able to come into contact with and separate from it. Therefore, the opening amount of the valve seat 5 is the same as that of the diaphragm 9 resisting the biasing force of the spring 7.
It is controlled by the amount of downward drive displacement.
また、上記ダイヤフラム９の上部に形設した駆
動圧力室１１は、パイロツト弁部２における後述
のパイロツト出力ポートに連通させ、ダイヤフラ
ム９の下部に形成した復帰圧力室１２はスリーブ
１３を介して出力ポート４に連通させている。従
つて、駆動圧力室１１に作用するパイロツト弁部
２からの出力と、復帰圧力室１２に作用する出力
ポート４の圧力とのバランスでダイヤフラム９が
変位し、それに伴う弁体６の変位により弁座５が
開閉される。 Further, the driving pressure chamber 11 formed in the upper part of the diaphragm 9 is communicated with a pilot output port of the pilot valve section 2, which will be described later, and the return pressure chamber 12 formed in the lower part of the diaphragm 9 is connected to the output port via the sleeve 13. It is connected to 4. Therefore, the diaphragm 9 is displaced due to the balance between the output from the pilot valve section 2 acting on the drive pressure chamber 11 and the pressure of the output port 4 acting on the return pressure chamber 12, and the accompanying displacement of the valve body 6 causes the valve to close. Seat 5 is opened and closed.
一方、上記パイロツト弁部２においては、パイ
ロツト弁本体１４に、主弁部１の供給ポート３に
連通するパイロツト供給ポート１５、主弁部１の
駆動圧力室１１に連通するパイロツト出力ポート
１６及び大気に開放したリリーフポート１７を設
け、このパイロツト弁本体１４内に、上記各ポー
ト間の流路の開口量を制御するスプール１８を摺
動可能に挿嵌している。該スプール１８は、その
一端の軸杆１９を、ソレノイド２０への通電量に
比例した吸引力でブツシユ２１を付設した固定鉄
心２２に吸引される可動鉄心２３に連結し、他端
に形設した圧力室２４内において、該スプールの
端部に穿設したばね座穴２５とパイロツト弁本体
１４に調節自在に螺挿したねじ２６との間に復帰
ばね２７を縮設したもので、さらに該スプール１
８にはパイロツト出力ポート１６と圧力室２４と
を連通させるフイードバツク孔２８を穿設してい
る。 On the other hand, in the pilot valve section 2, the pilot valve main body 14 has a pilot supply port 15 communicating with the supply port 3 of the main valve section 1, a pilot output port 16 communicating with the driving pressure chamber 11 of the main valve section 1, and a pilot port 15 communicating with the supply port 3 of the main valve section 1, and a pilot output port 16 communicating with the drive pressure chamber 11 of the main valve section 1, and A relief port 17 is provided which is open to the pilot valve body 14, and a spool 18 for controlling the opening amount of the flow path between the ports is slidably inserted into the pilot valve body 14. The spool 18 has an axial rod 19 at one end connected to a movable iron core 23 which is attracted to a fixed iron core 22 to which a bush 21 is attached with an attraction force proportional to the amount of current applied to the solenoid 20, and a movable iron core 23 formed at the other end. In the pressure chamber 24, a return spring 27 is compressed between a spring seat hole 25 drilled in the end of the spool and a screw 26 that is adjustably screwed into the pilot valve body 14. 1
8 is provided with a feedback hole 28 for communicating the pilot output port 16 and the pressure chamber 24.
上記ブツシユ２１は、可動鉄心２３のストロー
クを固定鉄心２２に対する吸引力がソレノイド２
０への通電量にほぼ比例する範囲内に設定し、そ
の通電量に応じた吸引力と上記復帰ばね２７の付
勢力とがバランスする位置にスプール１８を移動
させるものである。 The bush 21 is configured such that the stroke of the movable core 23 is controlled by the suction force applied to the fixed core 22 by the solenoid 2.
The spool 18 is set within a range that is approximately proportional to the amount of current applied to zero, and the spool 18 is moved to a position where the attraction force corresponding to the amount of current applied and the biasing force of the return spring 27 are balanced.
さらに、パイロツト弁部２の圧力室２４は、主
弁部１の復帰圧力室１２を介して主弁部１の出力
ポート４と連通させ、これによつて出力ポート４
側の圧力を復帰圧力室１２及び圧力室２４にフイ
ードバツクするよう構成している。 Furthermore, the pressure chamber 24 of the pilot valve section 2 is communicated with the output port 4 of the main valve section 1 via the return pressure chamber 12 of the main valve section 1, so that the output port 4
It is configured to feed back the side pressure to the return pressure chamber 12 and the pressure chamber 24.
なお、図中２９はスプール１８のストツパであ
る。 Note that 29 in the figure is a stopper for the spool 18.
次に、上記構成を有する電磁制御減圧弁の作用
について説明する。 Next, the operation of the electromagnetically controlled pressure reducing valve having the above configuration will be explained.
第１図は、ソレノイド２０への非通電状態を示
し、パイロツト弁部２においてはパイロツト供給
ポート１５とパイロツト出力ポート１６間の流路
が閉塞され、主弁部１においては供給ポート３と
出力ポート４が閉塞されて、該出力ポート４には
出力が得られない状態にある。 FIG. 1 shows a state in which the solenoid 20 is de-energized, in which the flow path between the pilot supply port 15 and the pilot output port 16 is blocked in the pilot valve section 2, and the flow path between the supply port 3 and the output port in the main valve section 1 is closed. 4 is blocked, and no output can be obtained from the output port 4.
今、ソレノイド２０へ通電すれば、その通電量
に応じた吸引力が発生して、可動鉄心２３が復帰
ばね２７の付勢力に抗して固定鉄心２２の方向へ
吸引され、これに伴つてリリーフポート１７が閉
塞されると共にパイロツト供給ポート１５とパイ
ロツト出力ポート１６間がその吸引力に応じた開
口量に保持される。これにより発生するパイロツ
ト出力ポート１６の出力圧は、駆動圧力室１１に
加わつてダイヤフラム９を押し下げ、弁体６をば
ね７の付勢力に抗して下動させるので、その下動
量に応じて弁座５が開口し、供給ポート３と出力
ポート４の間が連通して、出力ポート４に出力圧
が発生する。しかるに、該出力ポート４は復帰圧
力室１２及び圧力室２４に連通し、また圧力室２
４はフイードバツク孔２８によつてパイロツト出
力ポート１６にも連通しているので、上記両室１
２，２４に出力圧等がフイードバツクされて、そ
れらがダイヤフラム９を復帰させるように作用
し、そのため弁体６が座弁５を閉塞する方向に押
し戻されて全体的にバランスする位置に保持さ
れ、出力ポート４の圧力が設定値に保たれる。従
つて結果的には出力ポート４においてソレノイド
２０への通電量に応じた出力圧が得られることに
なる。 If the solenoid 20 is energized now, a suction force corresponding to the amount of energization will be generated, and the movable core 23 will be attracted toward the fixed core 22 against the urging force of the return spring 27, resulting in relief. While the port 17 is closed, the opening amount between the pilot supply port 15 and the pilot output port 16 is maintained in accordance with the suction force. The output pressure of the pilot output port 16 generated by this is applied to the driving pressure chamber 11 and pushes down the diaphragm 9, causing the valve body 6 to move downward against the biasing force of the spring 7. Seat 5 opens, supply port 3 and output port 4 communicate with each other, and output pressure is generated at output port 4 . However, the output port 4 communicates with the return pressure chamber 12 and the pressure chamber 24, and also communicates with the pressure chamber 2.
4 also communicates with the pilot output port 16 through the feedback hole 28, so both chambers 1
The output pressure etc. are fed back to 2 and 24, which act to return the diaphragm 9, so that the valve body 6 is pushed back in the direction of closing the seat valve 5 and is held in a balanced position as a whole, The pressure at output port 4 is maintained at the set value. Therefore, as a result, an output pressure corresponding to the amount of current supplied to the solenoid 20 is obtained at the output port 4.
而して、ソレノイド２０への通電を停止すれ
ば、スプール１８が第１図に示す位置に復帰し、
パイロツト供給ポート１５とパイロツト出力ポー
ト１６との間を閉塞すると共にリリーフポート１
７を大気に開放し、該リリーフポート１７を通じ
て各圧力室が大気に開放するため、ダイヤフラム
９及び弁体６も同図に示す元位置に復帰する。 When the energization to the solenoid 20 is stopped, the spool 18 returns to the position shown in FIG.
Closes the space between the pilot supply port 15 and the pilot output port 16, and also closes the relief port 1.
7 is opened to the atmosphere, and each pressure chamber is opened to the atmosphere through the relief port 17, so that the diaphragm 9 and the valve body 6 also return to their original positions shown in the figure.
第２図は、可動鉄心２３のストロークと吸引力
との関係をソレノイド２０への通電量をパラメー
タとして表わしたものである。同図に示すよう
に、l1の範囲内においては可動鉄心２３が固定鉄
心２２に近づくに従つて吸引力が著しく増大する
が、l2の範囲内においてはストロークに拘わらず
吸引力が通電量にほぼ比例する。このことから、
本考案はl2の範囲内を利用するものであり、前記
ブツシユ２１及びストツパ２９は、可動鉄心２３
のストロークをその吸引力が通電量に比例するl2
の範囲内に設定するものである。 2 shows the relationship between the stroke of the movable core 23 and the attractive force, with the amount of current supplied to the solenoid 20 as a parameter. As shown in the figure, within the range of l1 , the attractive force increases significantly as the movable core 23 approaches the fixed core 22, but within the range of l2 , the attractive force is approximately proportional to the amount of current supplied, regardless of the stroke.
This invention utilizes the range of l2 , and the bush 21 and the stopper 29 are
The stroke of the magnet is proportional to the amount of current .
The range is set as follows.
また、第３図はソレノイド２０の電流値と出力
ポート４で得られる２次圧力との関係を示す線図
で、主弁部１の出力特性がソレノイド２０への通
電量に比例することを示している。 Furthermore, FIG. 3 is a diagram showing the relationship between the current value of the solenoid 20 and the secondary pressure obtained at the output port 4, and shows that the output characteristic of the main valve section 1 is proportional to the amount of current supplied to the solenoid 20. ing.
第１図は本考案の電磁制御減圧弁の断面図、第
２図はソレノイドの吸引力特性を示す線図、第３
図は上記電磁制御減圧弁の出力特性を示す線図で
ある。
１……主弁部、２……パイロツト弁部、３……
供給ポート、４……出力ポート、５……弁座、６
……弁体、７……ばね、９……ダイヤフラム、１
１……駆動圧力室、１２……復帰圧力室、１４…
…パイロツト弁本体、１５……パイロツト供給ポ
ート、１６……パイロツト出力ポート、１８……
スプール、２０……ソレノイド、２２……固定鉄
心、２３……可動鉄心、２４……圧力室。
Figure 1 is a sectional view of the electromagnetically controlled pressure reducing valve of the present invention, Figure 2 is a diagram showing the attraction force characteristics of the solenoid, and Figure 3 is a diagram showing the attraction force characteristics of the solenoid.
The figure is a diagram showing the output characteristics of the electromagnetically controlled pressure reducing valve. 1... Main valve part, 2... Pilot valve part, 3...
Supply port, 4... Output port, 5... Valve seat, 6
... Valve body, 7 ... Spring, 9 ... Diaphragm, 1
1... Drive pressure chamber, 12... Return pressure chamber, 14...
...Pilot valve body, 15...Pilot supply port, 16...Pilot output port, 18...
Spool, 20... Solenoid, 22... Fixed iron core, 23... Movable iron core, 24... Pressure chamber.
Claims (1)
る弁体をダイヤフラムの駆動変位量に応じて制御
する主弁部と、上記ダイヤフラムを駆動変位させ
るパイロツト弁部とを備えたパイロツト式の減圧
弁において、上記パイロツト弁部に、上記供給ポ
ートに連通するパイロツト供給ポート、上記ダイ
ヤフラムの駆動圧力室に連通するパイロツト出力
ポート、及びリリーフポートを設けると共に、そ
れらのポート間の開口量を制御するスプールを設
け、このスプールに、通電量に比例した吸引力が
作用するソレノイドの可動鉄心を連結すると共
に、該スプールの端部に対面し且つ上記主弁部の
出力ポートに連通させて上記可動鉄心の吸着力に
対抗するフイードバツク圧力をスプールに作用さ
せる圧力室を設けたことを特徴とする電磁制御減
圧弁。 A pilot type pressure reduction device comprising a main valve section that controls a valve body that approaches and separates from a valve seat between a supply port and an output port according to the amount of drive displacement of a diaphragm, and a pilot valve section that drives and displaces the diaphragm. In the valve, the pilot valve portion is provided with a pilot supply port that communicates with the supply port, a pilot output port that communicates with the drive pressure chamber of the diaphragm, and a relief port, and a spool that controls the opening amount between these ports. A movable core of a solenoid is connected to the spool, and a movable core of a solenoid is connected to the spool, and a movable core of a solenoid is connected to the spool, and the movable core is connected to the spool so as to face the end of the spool and communicate with the output port of the main valve. An electromagnetically controlled pressure reducing valve characterized by being provided with a pressure chamber that applies feedback pressure to the spool to counter the adsorption force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12386879U JPS6225764Y2 (en) | 1979-09-07 | 1979-09-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12386879U JPS6225764Y2 (en) | 1979-09-07 | 1979-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5641309U JPS5641309U (en) | 1981-04-16 |
| JPS6225764Y2 true JPS6225764Y2 (en) | 1987-07-01 |
Family
ID=29355790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12386879U Expired JPS6225764Y2 (en) | 1979-09-07 | 1979-09-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6225764Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS596670U (en) * | 1982-07-06 | 1984-01-17 | タコ株式会社 | Pilot regulator system for multiple control |
| JPH0618008B2 (en) * | 1983-01-20 | 1994-03-09 | 松下電器産業株式会社 | Pressure control valve |
| JPS60151453U (en) * | 1984-03-19 | 1985-10-08 | 松下電器産業株式会社 | Electric cooker power supply |
| KR101538198B1 (en) * | 2008-07-22 | 2015-07-20 | 이턴 코포레이션 | Valvetrain oil control system and oil control valve |
-
1979
- 1979-09-07 JP JP12386879U patent/JPS6225764Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5641309U (en) | 1981-04-16 |
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