JPH0861544A - Structure of fluid control valve - Google Patents
Structure of fluid control valveInfo
- Publication number
- JPH0861544A JPH0861544A JP22253094A JP22253094A JPH0861544A JP H0861544 A JPH0861544 A JP H0861544A JP 22253094 A JP22253094 A JP 22253094A JP 22253094 A JP22253094 A JP 22253094A JP H0861544 A JPH0861544 A JP H0861544A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fluid control
- opening
- control valve
- inlet
- 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
- Magnetically Actuated Valves (AREA)
Abstract
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 that opens and closes a valve opening, and in particular, reduces flow resistance that affects the flow rate when the valve lift amount is small to improve flow rate characteristics. The present invention relates to a valve structure in a fluid control valve that is made good.
【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, the valve disc disk d is attached to the lower end of the valve shaft body c whose vertical movement is controlled by the solenoid b, and the inflow hole f communicating with the inlet e is provided in the valve shaft body c. It is known to have a poppet type valve in which a flow dividing hole g branched from f is formed laterally in the valve shaft 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, pressure loss occurs in the fluid because the flow path is bent at a right angle in the process of flowing from the valve shaft c to the valve opening h. When the lift amount δ is 1/4 or more of the diameter D of the valve opening h, the pressure loss does not affect the flow rate at all, however, the lift amount δ is less than 1/4 of the diameter D of the valve opening h. In a small range, the pressure loss affects the flow rate, which causes a decrease in the flow rate and deteriorates the 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。In addition, at the time of machining, the flow dividing hole g must be formed in the lateral direction of the cylindrical valve shaft body c. For this reason, since it differs from the machining axis of the inflow hole f, the position of the work is changed, A jig for positioning is 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。SUMMARY OF THE INVENTION According to the present invention, the inflow path from the outflow hole to the valve opening is made as straight as possible, and the outflow is caused by the flow of a part of the fluid flowing into the valve opening from the outside of the valve body. Some of the fluid that flows in from the hole is drawn in, and the fluid that flows into the outflow hole is rectified by the rectification passage to prevent deterioration of the flow rate characteristics due to pressure loss, especially when the lift amount is extremely small, and it is easy to machine the hole The present invention provides a valve structure for a fluid control valve that controls the opening and closing of a valve opening with a poppet type that reduces cost.
【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-mentioned problems of flow rate characteristics and the like in a range where the lift amount is small based on the above-mentioned prior art. An outlet hole that allows the fluid to flow into the valve chamber from the outer periphery near the valve disc that has a unique grounding surface, and the fluid path to the valve opening is infinitely linear to reduce pressure loss and reduce the lift amount. The present invention aims to solve the above-mentioned drawbacks by providing a valve structure in a fluid control valve whose purpose is to reduce the flow rate loss and improve flow rate characteristics.
【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。The inlet and the outlet are divided by a partition wall, and a valve body having a valve opening formed in the partition wall and a poppet-type main valve that opens and closes the valve opening by opening and closing the valve seat around the valve opening are provided with the partition wall and the inlet. 2 is a valve structure of a fluid control valve arranged in a flow path between and.
【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形成された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たり、弁
体デイスク自体に流出孔を設けたりしている。A valve disc having a frustoconical valve disc portion in which a minimum contact surface for seating on a valve seat is formed at the end of the valve stem of the main valve is attached to the valve disc. A communication hole that communicates with the inlet is formed in the body, and a plurality of outflow holes that communicate with the communication hole are provided in the circumferential direction around the valve body portion, or an outflow hole is provided in the valve disk itself.
【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Also, the main valve can be adapted to be controlled by a solenoid, and further, a cone cylinder portion whose diameter is expanded downward is formed outside the magnetic circuit in the communication hole in the valve shaft body, and the cone cylinder portion is formed in the cone cylinder portion. The pressure loss can be further reduced by forming the conical rectifying protrusions provided 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。Moreover, a part of the opening at the lower end of the opening of the outflow hole near the central axis of the valve disc may be overlapped with the guide surface of the valve body in the diametrical direction with respect to the central 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, in which 1 is a fluid control valve according to the present invention, and the fluid control valve 1 has a valve port 4 communicating an inlet 2 and an outlet 3. The valve body 5 includes a poppet-type main valve 6 that opens and closes the valve opening 4, and a solenoid 7 that controls the main valve 6. The lift amount δ of the main valve 6 controlled by the solenoid 7 is defined by the valve opening 4 The diameter 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 is composed of a valve tube 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 tube body 8 is formed in a cylindrical shape, and the lower end thereof is formed. The 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 that divides the mounting port 10 and the outlet 3 is formed. The port 4 is formed, and the valve seat 12 is formed so as to project from the periphery of the valve port 4 toward the mounting port 10 side.
【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の一点斜線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 upper end portion 12a of the valve seat 12 is formed in a rounded shape, and the side wall surface 12b thereof is formed in a tapered shape, and the valve seat 12 is projected as shown by the one-dot diagonal line X in FIG. The flat part of the partition wall 11 around the valve opening 4 is not
However, there was no effect on the flow rate characteristics described later.
【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 thin the caulking portion 34 so that at least the 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。The latter inlet joint 9 is formed in a columnar shape, the lower end side of which forms a core portion 13, the upper end side of which an inlet 2 is formed, and the center of the core portion 13 is continuous from the inlet 2. An inflow hole 14 opening to the lower end side of the passage 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 arranged between the partition wall 11 of the valve body 5 and the inlet 2, and functions as a plunger whose magnetic attraction is controlled by the core portion 13 of the inlet joint 9 and the valve cylinder 8. Has the function of sitting on the valve seat 12 and closing the valve opening 4, and forms a cylindrical valve shaft body 15 from a magnetic material.
The outer diameter of 15 is slightly smaller than the inner diameter of the valve cylinder 8 so that it can be moved up and down in the valve cylinder 8. The valve seat 15 has a valve seat 12 at the lower end thereof. The valve disc 16 to be seated is attached.
【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
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 vertically penetrate therethrough, and an upper side of the communication hole 17 is formed in a diameter-expanded shape to form a spring insertion cylinder portion 18 and A valve disc mounting portion 21 composed of a cone cylinder portion 19 and a two-stage cylinder portion 20 is formed, in which the lower side that does not cause magnetic loss in a magnetic circuit to be described later is successively expanded in diameter downward.
【0018】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。The valve disc 16 is made of a sealing material such as rubber, synthetic resin, or metal, and is a two-stage cylindrical portion 20.
At the center of the lower surface of the disk-shaped disk body 22 that matches the inner diameter of the large-diameter portion 20a of the frustoconical cone so as to form a minimum contact surface for seating on the valve seat 12 of the valve opening 4 in a poppet manner. The valve body 23 in the shape of a ring is integrally projected downward.
【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 portion 23 is provided in the shape of a truncated cone, the guide surface 24 which is the peripheral side wall thereof is formed in a tapered shape, but the guide surface 24 formed in such a tapered shape.
May have a rounded shape, and in this case, the surface area of the guide surface 24 increases, so that the fluid guiding action 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。A cone-shaped rectifying projection 25 is integrally projected upward at the center of the upper surface of the disk main body 22, and the valve disk 16 is attached to the valve shaft body 15.
When mounted on the valve disc mounting portion 21, the rectifying projection 25, the cone tubular portion 19, and the small diameter portion 20b of the two-stage cylindrical portion 20 form a rectifying passage 26 that expands in a cone shape.
【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。Outlet holes 27, 27a which penetrate the upper and lower surfaces of the disk body 21 in the circumferential direction around the valve body portion 23 of the disk body 22 and communicate with the rectifying passage 26.
And a part of the opening portion near the central axis CL of the valve disc 16 at the lower opening end of the outflow holes 27, 27a.
The guide surface 24 of the valve body 23 in the diametrical direction with respect to the central axis CL
Is overlapped with.
【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。The valve disc 16 is mounted on the large-diameter portion 20a of the two-stage cylindrical portion 20 of the valve disc mounting portion 21, and then the outer peripheral side of the valve disc 16 is 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 provided on the valve shaft body 15 of the main valve 6,
Although the valve disc mounting portion 21 composed of the two-stage cylindrical portion 20 is provided, the structure is not limited to this. For example, such a portion can be integrally formed as the valve disc 16, and in this case, the magnetic circuit. Since it is also outside, there is no magnetic loss, so that it is possible without making the solenoid 7 large.
【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。Then, the inlet joint 9 is screwed to the valve cylinder 8, the main valve 6 is vertically movably mounted in the valve chamber 28 in the valve cylinder 8, and a spring is inserted above the main valve 6. A spring 29 is arranged in the tubular portion 18, the main valve 6 is biased downward by the elastic force of the spring 29, and the main body 6 is seated on the valve seat 12 by a valve disc 16 attached to the lower end of the main valve 6. The valve opening 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12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 coil 31 having a predetermined number of turns wound around a bobbin 30 having an inner diameter through which the valve body 5 is inserted, and a yoke 32 having a U-shaped cross section and made of a magnetic material.
Is arranged around the coil 31, and the yoke 32, the core portion 12 of the inlet joint 9 and the upper side of the main valve 6 form a magnetic circuit.
【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。Reference numeral 33 in the drawing denotes a communication groove formed on 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5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, regarding other embodiments of the fluid control valve 1, common parts will be omitted and only different parts will be described. The fluid control valve 1a shown in FIG. A valve disc 16 is attached to the lower end of the valve 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 has a bottomed shape. Outflow holes 27, 27a ... Are formed in the circumferential direction on the outer side in the vicinity of the disk 16.
【0028】又、図6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. 6, the diameter of the communication hole 17 in the center of the valve shaft body 15 of the main valve 6 is larger than that of the valve body disk 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, the lower portion of the valve disc 16 is projected from the lower end of the valve shaft 15, and the protruding portion is formed as the valve body 23. are 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 1/4 of the diameter D of the valve opening 4, the setting is not limited to this, and it is essential. Since the purpose is to improve the flow rate characteristic in the range of the lift amount δ smaller than ¼ of the diameter D, the main valve 6 is vertically moved by the solenoid 7 and only the opening / closing operation of the valve port 4 is performed. Is not limited to the electromagnetic fluid control valve 1 as described above, the main valve 6 has a communication hole 17 and outflow holes 27, 27a ... And a pressure reducing valve for controlling the opening and closing of the valve port 4 by a poppet type, a relief valve, and Can also be applied to a flow rate 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 fluid, the solenoid 7 is actuated, and the magnetized core portion 13 in the inlet joint 9 which is a part of the magnetic circuit is used. Main valve 6 to spring 29
The upper end of the main valve 6 is moved up against the resilience of the main valve 13 until it abuts the lower end of the core portion 13 to adsorb and hold the valve disc 16 by a predetermined lift amount δ from the valve seat 12. The valve port 4 is opened by detaching it.
【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。Then, the fluid flowing from the inlet 2 passes through the inflow hole 14 and the communication hole 17 and the valve shaft body 15 and the valve disk 16
Through the outflow holes 27, 27a, ..., To the outside through the valve port 4 and the outlet 3.
【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 flow state, the outflow holes 27, 27
Since a ... Is provided in the circumferential direction in the vicinity of the valve opening 4, the inflow path to the valve opening 4 can be made as linear as possible, and the valve of the disc body 16 can be opened from the lower end of the opening of the outflow holes 27, 27a. Body
Since 23 is projected downward and the tapered or rounded guide surface 24 is formed, a part of the fluid flowing into the valve chamber 28 is directed from the outer peripheral side of the valve body portion 23 toward the center of the valve opening 4. A part of the fluid flows out in the circumferential direction when flowing out
The smooth flow without any resistance along the guide surface 24 between the 27, 27a, ...
A part of the fluid flowing in is drawn in and flows toward the center of the valve opening 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。Further, all the structures, dimensions, etc. are the same and the valve seat is
When the fluid control valve 1 in which the flat portion of the partition wall 11 was formed as the valve seat 12 without being projected was tested, no difference was found in the flow rate characteristics. It is presumed that the above-mentioned entrainment phenomenon occurs because the fluid flowing along 24 and the fluid flowing from the outflow holes 27, 27a ... Are overlapped in the circumferential direction.
【0035】しかも、コーン筒部19内に整流突起24を配
設するものにあっては、コーン筒部19と整流突起24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。Moreover, in the case where the flow regulating projection 24 is provided in the cone tubular portion 19, when flowing between the cone tubular portion 19 and the flow regulating projection 24, the flow-out hole is rectified into a cone shape. 2
7, 27a… Inflow into.
【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。Further, it is recognized that the flow rate characteristics of the fluid control valves 1, 1a ... And the flow rate characteristics of the conventional fluid control valve are clearly improved as compared with the conventional one as shown in FIG. It 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, of course, the objects to be compared differ 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 ...
In regard to the machining, since the open ends of the outflow holes 27, 27a ... Are formed at the ends of the valve shaft body 15, it is possible to machine all the holes from one direction which is the axial direction of the valve shaft body 15. In addition, in the case where the valve disc 16 is formed separately, the cone-shaped rectifying path 26 can be formed by simply making a hole in the valve shaft 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(1/4より小)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、27
a …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 divides the inlet and the outlet by the partition wall, and the valve body having the valve opening formed in the partition wall and the poppet type for opening and closing the valve opening by opening and closing the valve seat around the valve opening. In the fluid control valve in which the main valve of the main valve is arranged in the flow path between the partition wall and the inlet, the ground plane that is the minimum necessary for seating on the valve seat 12 is formed at the end of the valve shaft body 15 of the main valve 6. A valve disc 16 having a valve body portion 23 is mounted, a communication hole 17 communicating with the inlet 2 is formed in the valve shaft body 15, and the discharge holes 27, 27a ... Since a plurality of holes 27, 27a, ... Are provided in the circumferential direction in the vicinity of the valve opening 4 because a plurality of them are provided in the circumferential direction in the vicinity of the portion 23, the inflow path to the valve opening 4 is infinitely linear. And circumferential outflow holes
Since a part of the fluid flowing from the outflow holes 27, 27a ... Is drawn into the valve opening 4 by the flow of a part of the fluid flowing into the valve opening 4 through the flow path between 27, 27a. In comparison with the fluid control valve a having a valve structure in which a right angle bending path is formed to cause pressure loss due to vortex flow, especially when the lift amount δ is significantly smaller than the diameter D of the valve opening 4 (less than 1/4). It is possible to prevent deterioration of the flow rate characteristics due to pressure loss, and to prevent the outflow holes 27, 27
Since the open end of a is formed at the end of the valve shaft 15, all holes can be drilled from one direction, which is the axial direction of the valve shaft 15. Therefore, it is possible to reduce the cost by eliminating the need for a jig or the like.
【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 portion 23 is projected downward from the end of the valve shaft body 15 and the protruding portion is frustoconical, the guide surface 24 is formed on the outer peripheral wall of the valve body portion 23. As a result, when a part of the fluid that has flowed into the valve chamber 28 flows from the outer peripheral side of the valve body portion 23 toward the center of the valve opening 4, a part of the fluid is provided in the circumferential direction in the outflow holes 27, 27a. By smoothly flowing without any resistance along the guide surface 24 between them, a part of the fluid flowing in from the outflow holes 27, 27a ... Is drawn in by the flow and flows to the valve port 4, so that the above-mentioned flow rate characteristic is obtained. 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。Further, the outflow holes 27, 27a which communicate with the communication hole 17 ...
Since a plurality of are provided in the circumferential direction around the valve body portion 23 of the valve body disk 16, the valve body disk 16 can be manufactured as a separate body and can be integrally formed at a lower cost than metal working. In addition, the cone-shaped flow rectifying path 26, which will be described later, can be formed by simply making a hole in 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。Further, a part of the opening portion near the central axis CL of the valve disc 16 at the lower end of the opening of the outflow holes 27, 27a.
Since it overlaps with the guide surface 24 of the outer peripheral wall of the valve body portion 23 in the diameter direction with respect to the central axis CL, the outflow hole 27,
Fluid flowing along the guide surface 24 between the 27a ...
Since there is a portion where the fluids flowing from 27a ... Join, the flow-through characteristic can be further improved by efficiently performing the pull-in phenomenon.
【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 expanded downward is formed on the lower side of 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, the cone tubular portion 19 and the rectifying projection 25 can form a rectifying passage 26 that expands in a cone shape, whereby the outflow holes 27, 27a. It is possible to rectify the fluid that flows into the ..., Therefore, it is possible to eliminate the pressure loss at such a portion, so that the above flow rate 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 tube portion 19 is formed outside the magnetic circuit inside the valve shaft body 15, the cone tube portion 19 is outside the magnetic circuit, so that the magnetic field is reduced. Since no loss occurs, it is possible to deal with the main valve 6 and the solenoid 7 without increasing the size thereof.
【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。Accordingly, the lift amount δ of the directional control valve, the pressure reducing valve, the relief valve, and the main valve 6 which are electromagnetic, mechanical and manual fluid control valves for controlling the opening / closing of the valve port 4 by the poppet type.
The amount of lift δ in the flow rate control valve for adjusting the flow rate by arbitrarily adjusting the flow rate can be improved in a range in which the lift amount δ is smaller than 1/4 of the diameter D of the valve opening 4, and the practical effect thereof is extremely large. It is a thing.
【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 when operating and when not operating.
【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 of the above.
【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 same.
【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 same.
【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 same 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 an operating state and a non-operating state of a conventional fluid control valve.
【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 rate characteristic graph of the fluid control valve of the present invention and the 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 body 16 Valve body disk 17 Communication hole 19 Cone cylinder portion 23 Valve body portion 24 Guide surface 25 Rectification protrusion 27, 27a… Outflow hole
Claims (6)
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
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
地面が形成された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
向に複数設けたことを特徴とする流体制御弁における弁
構造。1. A partition wall which divides an inlet and an outlet by a partition wall and has a valve opening formed in the partition wall, and a poppet-type main valve which opens and closes the valve opening by opening and closing the valve seat around the valve opening. In a fluid control valve arranged in the flow path between the inlet and the inlet, a valve body having a valve body portion in which a minimum ground contact surface for seating on the valve seat is formed at the end of the valve shaft body of the main valve. While mounting the disk, forming a communication hole that communicates with the inlet in the valve shaft body,
A valve structure in a fluid control valve, wherein a plurality of outflow holes communicating with the communication holes are provided in a circumferential direction around a valve body portion.
と共に、突出部位を截頭円錐状と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。2. The valve structure for a fluid control valve according to claim 1, wherein the valve body portion is projected downward from the end portion of the valve shaft body, and the protruding portion is formed into a truncated cone shape.
の弁体部近傍周囲の円周方向に複数設けたことを特徴と
する請求項1又は2記載の流体制御弁における弁構造。3. The valve structure for a fluid control valve according to claim 1, wherein a plurality of outflow holes communicating with the communication holes are provided in the circumferential direction around the valve body portion of the valve body disk.
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請求項2又は3記載の流体制
御弁における弁構造。4. A part of an opening portion near the central axis of the valve disc at the lower end of the opening of the outflow hole is overlapped with a guide surface of an outer peripheral wall of the valve body in a diameter direction with respect to the central axis. The valve structure in the fluid control valve according to claim 2 or 3.
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、2、3又は4記載の流体制御
弁における弁構造。5. A cone tube portion having a downwardly expanding diameter is formed on a lower side of a communication hole in the valve shaft body, and a conical rectifying projection disposed in the cone tube portion is formed on an upper surface of the valve disk. The valve structure in the fluid control valve according to claim 1, 2, 3, or 4.
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5記載の流体制御弁における弁構
造。6. The valve structure for a fluid control valve according to claim 5, 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 true JPH0861544A (en) | 1996-03-08 |
JP3069009B2 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) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104482276A (en) * | 2014-12-03 | 2015-04-01 | 吉林东光奥威汽车制动***有限公司 | Bidirectional electromagnetic valve for automobile brake systems |
JP2016537571A (en) * | 2013-10-28 | 2016-12-01 | 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 |
WO2023027028A1 (en) * | 2021-08-24 | 2023-03-02 | 伸和コントロールズ株式会社 | Moving core for solenoid valve and solenoid valve |
-
1994
- 1994-08-23 JP JP6222530A patent/JP3069009B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016537571A (en) * | 2013-10-28 | 2016-12-01 | 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 |
CN104482276A (en) * | 2014-12-03 | 2015-04-01 | 吉林东光奥威汽车制动***有限公司 | Bidirectional electromagnetic valve for automobile brake systems |
WO2023027028A1 (en) * | 2021-08-24 | 2023-03-02 | 伸和コントロールズ株式会社 | Moving core for solenoid valve and solenoid valve |
Also Published As
Publication number | Publication date |
---|---|
JP3069009B2 (en) | 2000-07-24 |
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