JP3069009B2 - Valve structure in fluid control valve - Google Patents
Valve structure in fluid control valveInfo
- Publication number
- JP3069009B2 JP3069009B2 JP6222530A JP22253094A JP3069009B2 JP 3069009 B2 JP3069009 B2 JP 3069009B2 JP 6222530 A JP6222530 A JP 6222530A JP 22253094 A JP22253094 A JP 22253094A JP 3069009 B2 JP3069009 B2 JP 3069009B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fluid control
- port
- communication hole
- control valve
- 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 - Lifetime
Links
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は弁口を開閉するポペット
式の弁を有する流体制御弁において、特に弁のリフト量
が少ない場合での流量に影響を及ぼす流動抵抗を減少さ
せて流量特性を良好にする様にした流体制御弁における
弁構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid control valve having a poppet type valve for opening and closing a valve port. The present invention relates to a valve structure of a fluid control valve which is improved.
【０００２】[0002]
【従来の技術】従来、この種の流体制御弁ａとしては、
図７に示す様にソレノイドｂによって上下動制御される
弁軸体ｃの下端に弁体デイスクｄを装着すると共に、入
口ｅと連通する流入孔ｆを弁軸体ｃ内に設け、且つ流入
孔ｆより分岐かれる分流孔ｇを弁軸体ｃ内の横方向に形
成したポペット式の弁を有するものが知られている。2. Description of the Related Art Conventionally, as this type of fluid control valve a,
As shown in FIG. 7, a valve disc d is mounted on the lower end of a valve shaft c that is vertically controlled by a solenoid b, and an inflow hole f communicating with an inlet e is provided in the valve shaft c. There is a known type having a poppet type valve in which a branch hole g branched from f is formed in a lateral direction in a valve shaft body c.
【０００３】しかるに、かかる流体制御弁ａにあって
は、弁軸体ｃ内から弁口ｈへ流動する過程にて流路が直
角屈曲形成されているために流体に圧損が生じるが、弁
のリフト量δが弁口ｈの直径Ｄの１／４以上である場合
には、かかる圧損は何ら流量に影響を及ぼさないも、し
かしながら上記リフト量δが弁口ｈの直径Ｄの１／４よ
り小さい範囲では、かかる圧損が流量に影響し、流量低
下をきたして流量特性が悪化する欠点を有している。However, in the fluid control valve a, a pressure loss is generated in the fluid because the flow path is formed at a right angle in the process of flowing from the valve shaft c to the valve port h. When the lift amount δ is 1/4 or more of the diameter D of the valve port h, the pressure loss does not affect the flow rate at all, however, the lift amount δ is larger than 1/4 of the diameter D of the valve port h. In a small range, the pressure loss affects the flow rate, causing a decrease in the flow rate and a deterioration in flow rate characteristics.
【０００４】しかも、加工時にあっては、円柱状の弁軸
体ｃの横方向より分流孔ｇを形成しなければならず、こ
のため流入孔ｆの加工軸と相違するためワークの位置変
え、位置決めのための治具等が必要となって手間を要
し、加工コストが高騰する欠点を有していた。Further, at the time of machining, a diverting hole g must be formed from the lateral direction of the cylindrical valve stem c. Therefore, since the diverting hole g is different from the machining axis of the inflow hole f, the position of the work is changed. A jig and the like for positioning are required, which is troublesome, and has a drawback that the processing cost rises.
【０００５】[0005]
【発明が解決しようとする課題】本発明は流出孔から弁
口への流入経路を限りなく直線的と成し、弁体部の外方
より弁口に流入する一部の流体の流れによって流出孔よ
り流入する一部の流体を引き込みし、又整流通路によっ
て流出孔へ流入させる流体を整流し、特にリフト量が著
しく小さい場合での圧損による流量特性の悪化を防止
し、又孔加工を容易にしてコスト低減を図ったポペット
式にて弁口を開閉制御する流体制御弁における弁構造を
提供せんとするものである。According to the present invention, the inflow path from the outflow hole to the valve port is formed as straight as possible, and the outflow is caused by the flow of a part of the fluid flowing into the valve port from outside the valve body. Part of the fluid that flows in from the hole is drawn in, and the fluid that flows into the outlet hole is rectified by the rectifying passage, preventing the flow rate characteristics from deteriorating due to pressure loss, especially when the lift amount is extremely small, and also facilitates hole machining It is an object of the present invention to provide a valve structure in a fluid control valve for controlling opening and closing of a valve port by a poppet type in which cost is reduced.
【０００６】[0006]
【課題を解決するための手段】本発明は上記従来技術に
基づくリフト量が少ない範囲における流量特性等の課題
に鑑み、ポペット式の主弁を有する流体制御弁におい
て、弁座に着座する最低必要な接地面を有する弁体デイ
スク近傍の外周より弁室内に流体を流入させる流出孔を
設け、弁口への流体経路を限りなく直線的と成して圧損
を低減し、リフト量が小なる状態での流量損失を低減し
て流量特性を向上させることを要旨とする流体制御弁に
おける弁構造を提供して上記欠点を解消せんとしたもの
である。SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the flow characteristics and the like in a range where the lift amount is small based on the prior art. An outflow hole that allows fluid to flow into the valve chamber from the outer periphery near the valve disc with a smooth grounding surface, and the fluid path to the valve port is formed as straight as possible to reduce pressure loss and reduce lift. The object of the present invention is to provide a valve structure in a fluid control valve which aims to improve the flow characteristics by reducing the flow loss in the above-mentioned method, and to solve the above-mentioned drawback.
【０００７】入口と出口を隔壁によって区割すると共
に、該隔壁に弁口を形成した弁本体と、弁口周囲の弁座
に接離して弁口を開閉するポペット式の主弁を隔壁と入
口との間の流路中に配設する流体制御弁における弁構造
である。An inlet and an outlet are divided by a partition wall, and a valve body having a valve port formed in the partition wall, and a poppet-type main valve which opens and closes a valve port by coming into contact with and separating from a valve seat around the valve port are connected to the partition wall. 3 is a valve structure of a fluid control valve disposed in a flow path between the fluid control valve and the fluid control valve.
【０００８】主弁における弁軸体端部に弁座に着座する
のに最低必要な接地面が截頭円錐状に形成された弁体部
を有する弁体デイスクを装着し、弁軸体内に入口と連通
する連通孔を形成し、該連通孔と連通する流出孔を弁体
部近傍の周囲の円周方向に複数設けている。 A valve disc having a valve body formed with a frusto-conical shape with a minimum ground contact surface required for seating on a valve seat is mounted on an end of the valve shaft of the main valve, and an inlet is inserted into the valve shaft. and forming a communication hole that communicates, a plurality set only the the communicating hole and communicating with the outflow hole in the circumferential direction around the valve body near.
【０００９】又、主弁をソレノイドによって制御するも
のにも適応でき、さらに弁軸体内の連通孔における磁気
回路外である下方側に下方拡径するコーン筒部を形成
し、該コーン筒部内に配設される円錐状の整流突起を弁
体デイスク上面に形成することにより、さらに圧損を低
減できるFurther, the present invention is applicable to a system in which the main valve is controlled by a solenoid. Further, a cone tube portion having a diameter that expands downward at a lower side outside the magnetic circuit in the communication hole in the valve shaft is formed. The pressure loss can be further reduced by forming the conical rectifying projection disposed on the upper surface of the valve disc.
【００１０】しかも、流出孔の開口下端における弁体デ
イスクの中心軸寄りの開口部位の一部を、同中心軸に対
して直径方向にて弁体部の誘導面とオーバラップさせて
も良い。[0010] In addition, a part of the opening at the lower end of the outlet hole near the center axis of the valve disc may be overlapped with the guiding surface of the valve body in the diameter direction with respect to the center axis.
【００１１】[0011]
【実施例】以下本発明の一実施例を図面に基づいて説明
すると、１は本発明に係る流体制御弁であり、該流体制
御弁１は入口２と出口３を連通する弁口４を有する弁本
体５と、弁口４を開閉するポペット式の主弁６と、該主
弁６を制御するソレノイド７から構成し、該ソレノイド
７によって制御される主弁６のリフト量δを弁口４の直
径Ｄの１／４より小さく設定している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a fluid control valve according to the present invention. The fluid control valve 1 has a valve port 4 communicating an inlet 2 and an outlet 3. A valve body 5, a poppet type main valve 6 for opening and closing the valve port 4, and a solenoid 7 for controlling the main valve 6, and the lift amount δ of the main valve 6 controlled by the solenoid 7 is determined by the valve port 4. Is set to be smaller than 1/4 of the diameter D.
【００１２】弁本体５は非磁性材から成る主弁６を内装
する弁筒体８と、磁性材からなる入口継手９から構成さ
れ、前者の弁筒体８は円筒状に形成され、その下端側に
出口３が形成されると共に、上端側に入口継手９を螺着
する取付口10を形成し、該取付口10と出口３とを区割す
る隔壁11を形成し、該隔壁11に弁口４が形成され、該弁
口４の周囲より取付口10側へ向かって突出する弁座12を
形成している。The valve body 5 comprises a valve body 8 containing a main valve 6 made of a non-magnetic material and an inlet joint 9 made of a magnetic material. The former valve body 8 is formed in a cylindrical shape, and its lower end is formed. An outlet 3 is formed on the side, and a mounting port 10 for screwing the inlet joint 9 is formed on the upper end side, and a partition wall 11 for dividing the mounting port 10 and the outlet 3 is formed. A port 4 is formed, and a valve seat 12 protruding from the periphery of the valve port 4 toward the mounting port 10 is formed.
【００１３】尚、弁座12は上端部位12a はアール状に形
成されると共に、その側壁面12b はテーパー状に形成さ
れ、又弁座12は図２の一点鎖線Ｘにて図示する様に突出
させずに弁口４周囲における隔壁11の平坦部位を弁座12
と成しても、後述する流量特性には何ら影響はなかっ
た。The valve seat 12 has an upper end portion 12a formed in a round shape, a side wall surface 12b formed in a tapered shape, and the valve seat 12 protrudes as shown by a dashed line X in FIG. The flat portion of the partition wall 11 around the valve port 4 is
Had no effect on the flow rate characteristics described below.
【００１４】尚、弁座12が平坦部位である場合には、少
なくとも後述するカシメ部34が隔壁11に干渉しない様
に、カシメ部34を無くしたり、カシメ部34を薄くしたり
する必要がある。When the valve seat 12 is a flat portion, it is necessary to eliminate the caulking portion 34 or to make the caulking portion 34 thin so that at least a caulking portion 34 described later does not interfere with the partition wall 11. .
【００１５】又、後者の入口継手９は円柱状に形成さ
れ、その下端側をコア部13と成し、上端側に入口２が形
成され、該入口２より連続してコア部13の中央を通り下
端側に開口する流入孔14を形成している。Also, the latter inlet joint 9 is formed in a columnar shape, the lower end of which is formed as a core portion 13, the upper end is formed with an inlet 2, and the center of the core portion 13 is continuously formed from the inlet 2. An inflow hole 14 opening to the lower end of the street is formed.
【００１６】主弁６は弁本体５の隔壁11と入口２との間
に配設するものにして、入口継手９のコア部13によって
磁力吸着制御されるプランジャとしての機能と、弁筒体
８の弁座12に着座して弁口４を閉鎖する機能を併せ持
ち、磁性材により円柱状の弁軸体15を形成し、該弁軸体
15の外径は弁筒体８の内径より若干小径と成して弁筒体
８内にて上下動自在と成しており、その弁軸体15の下端
側の端部に弁座12に着座する弁体デイスク16を装着して
いる。The main valve 6 is disposed between the partition 11 of the valve body 5 and the inlet 2, and functions as a plunger that is controlled by magnetic attraction by the core 13 of the inlet joint 9. The valve seat 4 has a function of closing the valve port 4 by being seated on the valve seat 12, and forming a cylindrical valve stem 15 with a magnetic material.
The outside diameter of the valve shaft 15 is slightly smaller than the inside diameter of the valve body 8 so that it can move up and down inside the valve body 8. The valve disc 16 to be seated is mounted.
【００１７】又、弁軸体15内の中央に連通孔17を上下に
貫通する様に形成し、該連通孔17の上方側を拡径状と成
してスプリング挿入筒部18を形成すると共に、後述する
磁気回路における磁気ロスを発生させない下方側を下方
へ向かうに従って順次拡径するコーン筒部19と、２段円
筒部20から成る弁体デイスク装着部21を形成している。Further, a communication hole 17 is formed in the center of the valve shaft body 15 so as to penetrate vertically, and the upper side of the communication hole 17 is formed to have a large diameter so as to form a spring insertion cylindrical portion 18. The lower side that does not cause magnetic loss in the magnetic circuit described below
A cone cylindrical portion 19 to thus successively expanded in diameter toward, and forms a valve body disc mounting portion 21 comprising a two-stage cylindrical portion 20.
【００１８】図５、６に示す様に、弁体デイスク16はゴ
ム、合成樹脂、金属等のシール材によって形成するもの
にして、２段円筒部20における大径部20a の内径に合致
する円板状のデイスク本体22の下面中央に、ポペット式
に弁口４の弁座12に着座するのに最低必要な接地面を形
成する様に截頭円錐状の弁体部23を下方へ一体突出して
いる。As shown in FIGS. 5 and 6, the valve disc 16 is formed of a sealing material such as rubber, synthetic resin, metal, or the like, and has a circle that matches the inner diameter of the large diameter portion 20a of the two-stage cylindrical portion 20. At the center of the lower surface of the plate-shaped disc body 22, a frusto-conical valve body 23 is integrally protruded downward so as to form a grounding surface necessary for seating on the valve seat 12 of the valve port 4 in a poppet manner. ing.
【００１９】又、弁体部23は截頭円錐状に突設している
ことにより、その周側壁である誘導面24はテーパー状に
形成されるも、かかるテーパー状に形成された誘導面24
をアール状と成しても良く、この場合誘導面24の表面積
が増大するので、後述する流体の誘導作用がさらに向上
する。Further, since the valve body 23 projects in a frusto-conical shape, the guiding surface 24 which is a peripheral side wall thereof is formed in a tapered shape, but the tapered guiding surface 24 is formed.
May be formed in a round shape. In this case, since the surface area of the guide surface 24 increases, the fluid guiding function described later is further improved.
【００２０】デイスク本体22の上面中央に円錐状の整流
突起25を上方へ一体突出し、弁体デイスク16を弁軸体15
の弁体デイスク装着部21に装着した時に、整流突起25と
コーン筒部19および２段円筒部20における小径部20b に
よってコーン状に拡がる整流通路26が形成される。At the center of the upper surface of the disk main body 22, a conical rectifying projection 25 is integrally projected upward, and the valve disk 16 is connected to the valve shaft 15
When mounted on the valve disc mounting portion 21, a flow straightening passage 26 which expands in a cone shape is formed by the flow straightening projection 25, the cone cylindrical portion 19, and the small diameter portion 20b of the two-stage cylindrical portion 20.
【００２１】又、デイスク本体22における弁体部23近傍
の周囲の円周方向に、デイスク本体21の上下面を貫通す
ると共に、上記整流通路26と連通する流出孔27、27a …
を形成し、かかる流出孔27、27a …の開口下端における
弁体デイスク16の中心軸ＣＬ寄りの開口部位の一部を、
同中心軸ＣＬに対して直径方向にて弁体部23の誘導面24
とオーバラップさせている。Outflow holes 27, 27a which penetrate through the upper and lower surfaces of the disk body 21 in a circumferential direction around the valve body 23 of the disk body 22 and communicate with the rectifying passage 26.
And a part of the opening portion of the valve disc 16 near the central axis CL at the lower end of the opening of the outflow holes 27, 27a.
The guiding surface 24 of the valve body 23 in the diameter direction with respect to the central axis CL.
And overlap.
【００２２】そして、弁体デイスク16を弁体デイスク装
着部21における２段円筒部20の大径部20a に装着し、し
かる後弁体デイスク16の外周側をカシメ部34によって装
着固定している。Then, the valve disc 16 is mounted on the large diameter portion 20a of the two-stage cylindrical portion 20 in the valve disc mounting portion 21, and then the outer peripheral side of the valve disc 16 is mounted and fixed by the caulking portion 34. .
【００２３】尚、主弁６の弁軸体15にコーン筒部19と、
２段円筒部20から成る弁体デイスク装着部21を設けてい
るも、かかる構造に何ら限定されず、例えばかかる部位
を弁体デイスク16として一体形成することも可能であ
り、この場合は磁気回路外でもあるため、磁気ロスがな
いことにより、ソレノイド７を大型にしなくても可能と
なる。In addition, a cone cylinder portion 19 is attached to the valve shaft body 15 of the main valve 6,
Although the valve disk mounting portion 21 composed of the two-stage cylindrical portion 20 is provided, the present invention is not limited to such a structure. For example, such a portion can be integrally formed as the valve disk 16. Since it is outside, there is no magnetic loss, so that it becomes possible without increasing the size of the solenoid 7.
【００２４】そして、弁筒体８に入口継手９を螺着する
と共に、弁筒体８内の弁室28に主弁６を上下動自在に内
装し、該主弁６の上方側のスプリング挿入筒部18にスプ
リング29を配設し、該スプリング29の弾発力によって主
弁６を下方へ付勢し、該主弁６の下端に装着する弁体デ
イスク16によって弁座12に着座させて弁口４を閉鎖させ
ている。An inlet joint 9 is screwed into the valve body 8, and the main valve 6 is mounted in a valve chamber 28 in the valve body 8 so as to be vertically movable, and a spring is inserted above the main valve 6. A spring 29 is disposed on the cylindrical portion 18, the main valve 6 is urged downward by the elastic force of the spring 29, and the main valve 6 is seated on the valve seat 12 by the valve disc 16 mounted on the lower end of the main valve 6. The valve port 4 is closed.
【００２５】ソレノイド７は弁本体５が挿通される内径
を有するボビン30に所定巻数のコイル31が巻回されると
共に、磁性材によって形成される断面コ字状のヨーク32
をコイル31の周囲に配設し、ヨーク32、入口継手９にお
けるコア部13および主弁６の上方側によって磁気回路を
形成している。The solenoid 7 has a bobbin 30 having an inner diameter into which the valve body 5 is inserted, and a predetermined number of coils 31 wound around the bobbin 30, and a yoke 32 having a U-shaped cross section formed of a magnetic material.
Is disposed around the coil 31, and a magnetic circuit is formed by the yoke 32, the core portion 13 of the inlet joint 9, and the upper side of the main valve 6.
【００２６】尚、図中33は弁軸体15の外周面の上下方向
にわたって形成した連通溝である。In the drawing, reference numeral 33 denotes a communication groove formed over the outer peripheral surface of the valve shaft body 15 in the vertical direction.
【００２７】次に、流体制御弁１の他の実施例について
は、共通箇所は省略し、相違する箇所についてのみ説明
すると、図３に示す流体制御弁1aとしては、主弁６にお
ける弁軸体15の下端に弁体デイスク16を装着すると共
に、弁軸体15中央における連通孔17の直径を弁体デイス
ク16より小径と成すと共に、有底状と成し、かかる連通
孔17底部より弁体デイスク16の近傍外側の円周方向に流
出孔27、27a …を形成している。Next, with respect to another embodiment of the fluid control valve 1, common parts are omitted, and only different points will be described . The fluid control valve 1a shown in FIG. A valve disc 16 is mounted on the lower end of the valve shaft 15, and the diameter of the communication hole 17 at the center of the valve shaft 15 is smaller than that of the valve disc 16, and is formed as a bottomed shape. Outflow holes 27, 27a,... Are formed in the circumferential direction outside the vicinity of the disk 16.
【００２８】又、図４に示す流体制御弁1bとしては、主
弁６における弁軸体15中央における連通孔17の直径を弁
体デイスク16より大径と成すと共に、有底状と成し、か
かる連通孔17底部より弁体デイスク16の近傍外側の円周
方向に流出孔27、27a …を形成している。In the fluid control valve 1b shown in FIG. 4 , the diameter of the communication hole 17 at the center of the valve shaft 15 of the main valve 6 is larger than that of the valve disc 16 and is bottomed. Outflow holes 27, 27a,... Are formed in the circumferential direction outside the vicinity of the valve disc 16 from the bottom of the communication hole 17.
【００２９】又、流体制御弁1a、1bに共通する構造とし
ては、弁体デイスク16の下部を弁軸体15下端側の端部よ
り突設させ、かかる突設部位を弁体部23と成している。As a structure common to the fluid control valves 1a and 1b, a lower portion of the valve disk 16 is protruded from an end on the lower end side of the valve shaft 15, and the protruding portion is formed with the valve portion 23. doing.
【００３０】尚、本実施例の流体制御弁１における主弁
６のリフト量δは弁口４の直径Ｄの１／４より小さく設
定しているも、かかる設定には何ら限定されず、要する
に直径Ｄの１／４より小さいリフト量δの範囲での流量
特性の改善を図ることが目的であるため、主弁６をソレ
ノイド７にて上下動制御して弁口４の開閉操作のみを行
う様にした電磁式の流体制御弁１に限らず、主弁６に連
通孔17と流出孔27、27a …が形成され、ポペット式にて
弁口４を開閉制御する減圧弁、リリーフ弁、更には主弁
６のリフト量δを任意に調整して流量を可変させる流量
制御弁にも適応可能である。Although the lift amount δ of the main valve 6 in the fluid control valve 1 of the present embodiment is set to be smaller than １ ／ of the diameter D of the valve port 4, the setting is not limited at all. Since the purpose is to improve the flow characteristics in the range of the lift amount δ smaller than １ ／ of the diameter D, the main valve 6 is vertically moved by the solenoid 7 and only the opening and closing operation of the valve port 4 is performed. The main valve 6 is formed with a communication hole 17 and outflow holes 27, 27a... In addition to the above-described electromagnetic fluid control valve 1, and a pressure reducing valve, a relief valve for controlling opening and closing of the valve port 4 by a poppet type, and a relief valve. The present invention is also applicable to a flow control valve that arbitrarily adjusts the lift amount δ of the main valve 6 to vary the flow rate.
【００３１】次に本発明に係る流体制御弁の作用につい
て説明すると、先ず、流体の流れについては、ソレノイ
ド７を作動させ、磁気回路の一部である入口継手９にお
ける磁化されたコア部13によって主弁６をスプリング29
の弾発力に抗してその主弁６の上端部をコア部13の下端
部に当接させるまで上動させて吸着保持して弁体デイス
ク16を弁座12より所定のリフト量δだけ離脱させて弁口
４を開口させる。Next, the operation of the fluid control valve according to the present invention will be described. First, regarding the flow of the fluid, the solenoid 7 is operated and the magnetized core portion 13 at the inlet joint 9 which is a part of the magnetic circuit is used. Main valve 6 with spring 29
The upper end of the main valve 6 is moved upward until the upper end of the main valve 6 comes into contact with the lower end of the core portion 13 against the resilience of the core portion 13 so that the valve disc 16 is lifted from the valve seat 12 by a predetermined lift amount δ. The valve port 4 is opened by separating.
【００３２】そして、入口２より流入した流体は、流入
孔14、連通孔17を介して弁軸体15および弁体デイスク16
の流出孔27、27a …より弁室28に流入して弁口４を通っ
て出口３より外部へ吐出する。The fluid flowing from the inlet 2 flows through the inflow hole 14 and the communication hole 17 to the valve shaft 15 and the valve disk 16.
Flows into the valve chamber 28 from the outlet holes 27, 27a and is discharged from the outlet 3 to the outside through the valve port 4.
【００３３】かかる流動状態にあっては、流出孔27、27
a …が弁口４近傍の円周方向に設けられているため、弁
口４への流入経路を限りなく直線的にできると共に、流
出孔27、27a …の開口下端より弁体デイスク16の弁体部
23は下方へ突出され、且つテーパー状又はアール状の誘
導面24が形成されることにより、弁室28に流入した一部
の流体は弁体部23の外周側より弁口４の中心へ向かって
流れる際に、流体の一部は円周方向に設けられる流出孔
27、27a …間の誘導面24に沿って何ら抵抗なくスムーズ
に流れることにより、その流れによって流出孔27、27a
…より流入する一部の流体は引き込まれて弁口４中心へ
と流れる。In such a flowing state, the outflow holes 27, 27
are provided in the circumferential direction near the valve port 4, so that the inflow path to the valve port 4 can be made as linear as possible, and the valve of the valve disc 16 is opened from the lower end of the opening of the outflow holes 27, 27a. Body
23 is projected downward and a tapered or rounded guiding surface 24 is formed, so that a part of the fluid flowing into the valve chamber 28 is directed from the outer peripheral side of the valve body 23 to the center of the valve port 4. When the fluid flows, a part of the fluid is
27, 27a ... flows smoothly without any resistance along the guide surface 24 between the outlet holes 27, 27a
... A part of the fluid that flows in is drawn in and flows to the center of the valve port 4.
【００３４】又、全ての構造、寸法等を同一として弁座
12を突出したものと、突出させずに隔壁11の平坦部位を
弁座12と成した流体制御弁１で実験した処、流量特性に
は何ら相違することが認められなく、このことによって
誘導面24に沿って流れる流体と、流出孔27、27a …より
流れる流体とは円周方向にてオーバーラップされること
により、上記の引き込み現象が生じていると推定でき
る。Also, all the structures, dimensions and the like are the same and the valve seat
Experiments were conducted with the fluid control valve 1 having the protruding portion 12 and the flat portion of the partition wall 11 serving as the valve seat 12 without protruding, and no difference was observed in the flow rate characteristics. Since the fluid flowing along 24 and the fluid flowing from the outflow holes 27, 27a... Overlap in the circumferential direction, it can be estimated that the above-described drawing phenomenon has occurred.
【００３５】しかも、コーン筒部19内に整流突起25を配
設するものにあっては、コーン筒部19と整流突起25との
間を流れる際は、コーン状に整流された状態で流出孔2
7、27a …内へと流入する。In addition, in the case where the rectifying projection 25 is provided in the cone cylindrical portion 19, when flowing between the cone cylindrical portion 19 and the rectifying projection 25 , the outlet hole is rectified in a cone shape. Two
7, 27a… flows into the interior.
【００３６】又、流体制御弁１、1a…の流量特性と、従
来の流体制御弁との流量特性については、図８に示す様
に明らかに従来に比して向上していることが認められ
た。It is also recognized that the flow characteristics of the fluid control valves 1, 1a,... And the flow characteristics of the conventional fluid control valve are clearly improved as shown in FIG. Was.
【００３７】尚、当然ながら比較対象物は弁構造のみを
相違させ、その他全ての仕様は同一条件によって得られ
たデーターである。It should be noted that the object to be compared differs only in the valve structure, and all other specifications are data obtained under the same conditions.
【００３８】次に、流体制御弁１、1a…における主弁６
の加工については、流出孔27、27a…の開口端部が弁軸
体15の端部に形成されるため、弁軸体15の軸方向である
一方向から全ての孔加工をすることができると共に、弁
体デイスク16を別体にて形成しているものは、単に弁軸
体15に孔加工をするだけで、コーン状の整流通路26を形
成することができる。Next, the main valve 6 in the fluid control valves 1, 1a,.
Since the open ends of the outflow holes 27, 27a,... Are formed at the ends of the valve stem 15, all the holes can be machined from one direction that is the axial direction of the valve stem 15. At the same time, in the case where the valve disc 16 is formed as a separate body, the cone-shaped straightening passage 26 can be formed simply by forming a hole in the valve stem 15.
【００３９】[0039]
【発明の効果】要するに本発明は、入口と出口を隔壁に
よって区割すると共に、該隔壁に弁口を形成した弁本体
と、弁口周囲の弁座に接離して弁口を開閉するポペット
式の主弁を隔壁と入口との間の流路中に配設する流体制
御弁において、主弁６における弁軸体15端部に弁座12に
着座するのに最低必要な接地面が形成された弁体部23を
有する弁体デイスク16を装着すると共に、弁軸体15内に
入口２と連通する連通孔17を形成し、該連通孔17と連通
する流出孔27、27a …を弁体部23近傍の周囲の円周方向
に複数設けたので、流出孔27、27a …が弁口４近傍の円
周方向に設けられているため、弁口４への流入経路を限
りなく直線的と成り、且つ円周方向に設けられた流出孔
27、27a …間の流路を通り弁口４に流入する一部の流体
の流れによって流出孔27、27a …より流入する一部の流
体は引き込まれて弁口４へと流れることによって、従来
の直角屈曲経路が形成されて渦流による圧損が発生する
弁構造の流体制御弁ａに比し、特に弁口４の直径Ｄに対
しリフト量δが著しく小さい（直径Ｄの１／４より小さ
い）場合での圧損による流量特性の悪化を防止でき、又
流出孔27、27a …の開口端部が弁軸体15の端部に形成さ
れるため、弁軸体15の軸方向である一方向から全ての孔
加工ができるため、従来の様にワークの位置変え、位置
決めのために必要とした治具等を不要として手間を省い
てコストを低減することができる。In summary, the present invention is directed to a poppet type in which an inlet and an outlet are divided by a partition wall, a valve body having a valve port formed in the partition wall, and a valve port is opened and closed by coming into contact with and separating a valve seat around the valve port. In the fluid control valve in which the main valve is disposed in the flow path between the partition and the inlet, a grounding surface necessary for seating on the valve seat 12 is formed at the end of the valve shaft 15 of the main valve 6. A valve disc 16 having a valve body portion 23 is mounted, and a communication hole 17 communicating with the inlet 2 is formed in the valve shaft 15, and outflow holes 27, 27a,. Since a plurality of outlet holes 27, 27a,... Are provided in the circumferential direction near the valve port 4, the inflow path to the valve port 4 is made infinitely linear. Outflow holes formed in the circumferential direction
A part of the fluid flowing from the outlet holes 27, 27a... Is drawn in and flows to the valve port 4 by the flow of a part of the fluid flowing into the valve port 4 through the flow path between 27, 27a. In particular, the lift amount δ is significantly smaller than the diameter D of the valve port 4 (smaller than １ ／ of the diameter D) as compared with the fluid control valve a having a valve structure in which a pressure loss due to a vortex is generated due to the formation of a right-angled bent path.
In this case, it is possible to prevent the flow characteristics from being deteriorated due to the pressure loss, and since the open ends of the outlet holes 27, 27a are formed at the ends of the valve stem 15, the axial direction of the valve stem 15 is one. Since all holes can be drilled from the direction, it is possible to change the position of the work and eliminate the need for a jig or the like required for positioning as in the related art, thereby reducing labor and cost.
【００４０】又、弁体部23を弁軸体15端部より下方突出
させると共に、突出部位を截頭円錐状と成したので、弁
体部23の外周壁に誘導面24が形成されることにより、弁
室28に流入した一部の流体は弁体部23の外周側より弁口
４の中心へ向かって流れる際に、流体の一部は円周方向
に設けられる流出孔27、27a …間の誘導面24に沿って何
ら抵抗なくスムーズに流れることにより、その流れによ
って流出孔27、27a …より流入する一部の流体は引き込
まれて弁口４へと流れることによって、上記流量特性を
更に向上することができる。Further, since the valve body 23 is projected downward from the end of the valve shaft 15 and the projecting portion is formed in a frusto-conical shape, the guiding surface 24 is formed on the outer peripheral wall of the valve body 23. Accordingly, when a part of the fluid flowing into the valve chamber 28 flows from the outer peripheral side of the valve body 23 toward the center of the valve port 4, a part of the fluid is provided in outflow holes 27, 27a provided in the circumferential direction. The fluid flows smoothly without any resistance along the guiding surface 24, and a part of the fluid flowing in from the outlet holes 27, 27a. It can be further improved.
【００４１】又、連通孔17と連通する流出孔27、27a …
を弁体デイスク16における弁体部23近傍の周囲の円周方
向に複数設けたので、弁体デイスク16を別体にて製造す
ることができ、金属加工に比べ安価に一体成形すること
ができ、又単に弁軸体15に孔加工をするだけで、後述す
るコーン状の整流路26を形成することができる。Outflow holes 27, 27a communicating with the communication holes 17 are also provided.
Are provided in the circumferential direction around the valve body portion 23 of the valve body disk 16, so that the valve body disk 16 can be manufactured as a separate body, and can be integrally formed at a lower cost than metal processing. Further, a cone-shaped flow straightening path 26 to be described later can be formed only by boring the valve shaft body 15.
【００４２】又、流出孔27、27a …の開口下端における
弁体デイスク16の中心軸ＣＬ寄りの開口部位の一部を、
同中心軸ＣＬに対して直径方向にて弁体部23における外
周壁の誘導面24とオーバラップさせたので、流出孔27、
27a …間の誘導面24に沿って流れる流体と、流出孔27、
27a …より流れる流体が合流する箇所を有するため、上
記引き込み現象が効率よく行われることによって上記流
量特性を更に一層向上することができる。A part of the opening at the lower end of the outflow holes 27, 27a...
Since it overlapped with the guide surface 24 of the outer peripheral wall in the valve body 23 in the diameter direction with respect to the central axis CL, the outflow holes 27,
27a ... the fluid flowing along the guide surface 24 between the outlet holes 27,
27a... Since there is a place where the more flowing fluids merge, the above-mentioned drawing phenomenon is performed efficiently, so that the above-mentioned flow characteristics can be further improved.
【００４３】又、弁軸体15内の連通孔17における下方側
に下方拡径するコーン筒部19を形成し、該コーン筒部19
内に配設される円錐状の整流突起25を弁体デイスク16上
面に形成したので、コーン筒部19と整流突起25によって
コーン状に拡がる整流通路26が形成でき、これによって
流出孔27、27a …へ流入させる流体を整流させることが
でき、よってかかる箇所での圧損も無くすことができる
ため、上記流量特性をさらに良好にできる。Further, a cone tube portion 19 whose diameter is increased downward is formed below the communication hole 17 in the valve shaft body 15, and the cone tube portion 19 is formed.
Since the conical rectifying projection 25 disposed inside is formed on the upper surface of the valve disc 16, a rectifying passage 26 that expands in a cone shape can be formed by the cone cylindrical portion 19 and the rectifying projection 25, whereby the outflow holes 27, 27 a Can be rectified, and the pressure loss at such locations can be eliminated, so that the flow characteristics can be further improved.
【００４５】又、ポペット式の主弁６をソレノイドによ
って制御すると共に、コーン筒部19を弁軸体15内の磁気
回路外に形成したので、コーン筒部19が磁気回路外であ
るため、磁気ロスも発生しないため、主弁６およびソレ
ノイド７等を大型化せずとも対応できる。Further, since the poppet type main valve 6 is controlled by the solenoid and the cone cylinder portion 19 is formed outside the magnetic circuit in the valve shaft 15, the cone cylinder portion 19 is outside the magnetic circuit. Since no loss occurs, it is possible to cope without increasing the size of the main valve 6, the solenoid 7, and the like.
【００４６】従って、ポペット式にて弁口４を開閉制御
する電磁式、機械式、手動式の流体制御弁である方向制
御弁、減圧弁、リリーフ弁、更には主弁６のリフト量δ
を任意に調整して流量を可変させる流量制御弁でのリフ
ト量δが弁口４の直径Ｄの１／４より小さい範囲での流
量特性を改善することが出来る等その実用的効果甚だ大
なるものである。Therefore, a directional control valve, a pressure reducing valve, a relief valve, which is an electromagnetic, mechanical or manual type fluid control valve for controlling the opening and closing of the valve port 4 by a poppet type, and a lift amount δ of the main valve 6
The flow rate characteristic in the range where the lift amount δ at the flow control valve for varying the flow rate by arbitrarily adjusting the diameter of the valve port 4 is smaller than １ ／ of the diameter D of the valve port 4 can be improved. Things.
【図１】本発明に係る流体制御弁の作動時と非作動時を
示す断面図である。FIG. 1 is a cross-sectional view showing a fluid control valve according to the present invention during operation and non-operation.
【図２】同上流体制御弁における弁構造の拡大断面図で
ある。FIG. 2 is an enlarged sectional view of a valve structure of the fluid control valve.
【図３】同上他の実施例における弁構造の拡大断面図で
ある。FIG. 3 is an enlarged sectional view of a valve structure according to another embodiment of the present invention.
【図４】同上他の実施例における弁構造の拡大断面図で
ある。FIG. 4 is an enlarged sectional view of a valve structure according to another embodiment of the present invention.
【図５】弁体デイスクの上面斜視図である。FIG. 5 is a top perspective view of the valve disc.
【図６】同上弁体デイスクの下面斜視図である。FIG. 6 is a bottom perspective view of the valve disc.
【図７】従来の流体制御弁の作動時と非作動時を示す断
面図である。FIG. 7 is a cross-sectional view showing a conventional fluid control valve during operation and non-operation.
【図８】本発明の流体制御弁と従来の流体制御弁との流
量特性グラフである。FIG. 8 is a flow characteristic graph of a fluid control valve of the present invention and a conventional fluid control valve.
６ 主弁 12 弁座 15 弁軸体 16 弁体デイスク 17 連通孔 19 コーン筒部 23 弁体部 24 誘導面 25 整流突起 27、27a … 流出孔 6 Main Valve 12 Valve Seat 15 Valve Shaft 16 Valve Disc 17 Communication Hole 19 Cone Tubular 23 Valve Body 24 Guide Surface 25 Rectifying Protrusion 27, 27a… Outlet
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 平５−86080（ＪＰ，Ｕ) 実開 昭62−115586（ＪＰ，Ｕ) 実開 昭62−45485（ＪＰ，Ｕ) 実開 昭53−97432（ＪＰ，Ｕ) 実開 昭63−119989（ＪＰ，Ｕ) 特公 平３−42285（ＪＰ，Ｂ２) 実公 昭44−25425（ＪＰ，Ｙ１) 特表 平１−502046（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 1/00 - 1/54 F16K 31/00 - 31/11 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 5-86080 (JP, U) JP-A 62-115586 (JP, U) JP-A 62-45485 (JP, U) JP-A 53- 97432 (JP, U) JP-A 63-1101989 (JP, U) JP-B 3-42285 (JP, B2) JP-B 44-25425 (JP, Y1) JP-B 1-502046 (JP, A) (58) Field surveyed (Int.Cl. 7 , DB name) F16K 1/00-1/54 F16K 31/00-31/11
Claims (4)
に、該隔壁に弁口を形成した弁本体と、弁口周囲の弁座
に接離して弁口を開閉するポペット式の主弁を隔壁と入
口との間の流路中に配設する流体制御弁であって、主弁
における弁軸体端部に弁座に着座するのに最低必要な接
地面が突出形成された截頭円錐状の弁体部を有する弁体
デイスクを装着すると共に、弁軸体内に入口と連通する
連通孔を形成し、該連通孔と連通する流出孔を弁体部近
傍の周囲の円周方向に複数設けた弁構造において、流出
孔の開口下端における弁体デイスクの中心軸寄りの開口
部位の一部を、同中心軸に対して直径方向にて弁体部に
おける外周壁の誘導面とオーバラップさせたことを特徴
とする流体制御弁における弁構造。An inlet and an outlet are divided by a partition wall, a valve body having a valve port formed in the partition wall, and a poppet-type main valve which opens and closes a valve port by coming into contact with and separating from a valve seat around the valve port. A fluid control valve disposed in a flow path between the valve and an inlet, wherein a frusto-conical shape is formed at the end of the valve stem of the main valve, at which a ground contact surface necessary for seating on a valve seat is projected. A valve body disk having a valve body portion is mounted, and a communication hole communicating with the inlet is formed in the valve shaft body, and a plurality of outlet holes communicating with the communication hole are provided in a circumferential direction around the valve body portion. Spill in a closed valve structure
Opening near the center axis of the disc at the lower end of the hole
Part of the part is placed in the valve body in the diametric direction with respect to the same central axis
A valve structure in a fluid control valve characterized by overlapping with a guide surface of an outer peripheral wall in the fluid control valve.
に、該隔壁に弁口を形成した弁本体と、弁口周囲の弁座
に接離して弁口を開閉するポペット式の主弁を隔壁と入
口との間の流路中に配設する流体制御弁であって、主弁
における弁軸体端部に弁座に着座するのに最低必要な接
地面が突出形成された截頭円錐状の弁体部を有する弁体
デイスクを装着すると共に、弁軸体内に入口と連通する
連通孔を形成し、該連通孔と連通する流出孔を弁体部近
傍の周囲の円周方向に複数設けた弁構造において、弁軸
体内の連通孔における下方側に下方拡径するコーン筒部
を形成し、該コーン筒部内に配設される円錐状の整流突
起を弁体デイスク上面に形成したことを特徴とする流体
制御弁における弁構造。 2. An inlet and an outlet are divided by a partition wall.
A valve body having a valve port formed in the partition, and a valve seat around the valve port.
A poppet-type main valve that opens and closes the valve port by coming and going
A fluid control valve disposed in a flow path between the port and a main valve.
The minimum required contact to seat the valve seat at the end of the stem at
A valve body having a frusto-conical valve body with a protruding ground
Attach the disk and communicate with the inlet inside the valve shaft
A communication hole is formed, and an outflow hole communicating with the communication hole is located near the valve body.
In the valve structure provided in the circumferential direction around the valve, the valve shaft
Cone tube part whose diameter increases downward in the communication hole inside the body
And a conical rectifying projection disposed in the cone cylindrical portion.
Fluid characterized by having an opening formed on the upper surface of a valve disk
Valve structure in control valve.
拡径するコーン筒部を形成し、該コーン筒部内に配設さ
れる円錐状の整流突起を弁体デイスク上面に形成したこ
とを特徴とする請求項１記載の流体制御弁における弁構
造。3. A method according to claim 3, wherein a downwardly expanding cone cylindrical portion is formed below the communication hole in the valve shaft body, and a conical rectifying projection disposed in the cone cylindrical portion is formed on the upper surface of the valve disk. The valve structure of the fluid control valve according to claim 1, wherein:
制御すると共に、コーン筒部を磁気回路外に形成したこ
とを特徴とする請求項２又は３記載の流体制御弁におけ
る弁構造。4. The valve structure for a fluid control valve according to claim 2, wherein the poppet type main valve is controlled by a solenoid, and the cone cylinder is formed outside the magnetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6222530A JP3069009B2 (en) | 1994-08-23 | 1994-08-23 | Valve structure in fluid control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6222530A JP3069009B2 (en) | 1994-08-23 | 1994-08-23 | Valve structure in fluid control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0861544A JPH0861544A (en) | 1996-03-08 |
| JP3069009B2 true JP3069009B2 (en) | 2000-07-24 |
Family
ID=16783882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6222530A Expired - Lifetime JP3069009B2 (en) | 1994-08-23 | 1994-08-23 | Valve structure in fluid control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3069009B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6212213B2 (en) * | 2013-10-28 | 2017-10-11 | グリー エレクトリック アプライアンシーズ インク オブ ズーハイＧｒｅｅ Ｅｌｅｃｔｒｉｃ Ａｐｐｌｉａｎｃｅｓ， Ｉｎｃ． Ｏｆ Ｚｈｕｈａｉ | Electronic expansion valve |
| CN104482276B (en) * | 2014-12-03 | 2016-11-23 | 吉林东光奥威汽车制动***有限公司 | A kind of brake system of car bidirectional electromagnetic valve |
| JP2023030848A (en) * | 2021-08-24 | 2023-03-08 | 伸和コントロールズ株式会社 | Movable core for electromagnetic valve and electromagnetic valve |
-
1994
- 1994-08-23 JP JP6222530A patent/JP3069009B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0861544A (en) | 1996-03-08 |
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