JP2005325887A - Motor-driven valve - Google Patents

Motor-driven valve Download PDF

Info

Publication number
JP2005325887A
JP2005325887A JP2004143274A JP2004143274A JP2005325887A JP 2005325887 A JP2005325887 A JP 2005325887A JP 2004143274 A JP2004143274 A JP 2004143274A JP 2004143274 A JP2004143274 A JP 2004143274A JP 2005325887 A JP2005325887 A JP 2005325887A
Authority
JP
Japan
Prior art keywords
valve
seat
annular
valve body
valve seat
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.)
Pending
Application number
JP2004143274A
Other languages
Japanese (ja)
Inventor
Kenichi Mochizuki
健一 望月
Hitoshi Umezawa
仁志 梅澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikoki Corp
Original Assignee
Fujikoki Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujikoki Corp filed Critical Fujikoki Corp
Priority to JP2004143274A priority Critical patent/JP2005325887A/en
Publication of JP2005325887A publication Critical patent/JP2005325887A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Lift Valve (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor-driven valve capable of accurately and finely performing minute adjustment and performing adjustment also in a large flow rate state. <P>SOLUTION: A valve element 80 driven by an electric motor 71 is brought into contact with/separated from a valve seat 54. The valve seat 54 comprises an annular valve seat part. The valve element 80 comprises a valve member 81 and a holding member 82 holding the valve member 81. A step part 84 is provided in the lower part other than a seating part to the valve seat 54 of the valve member 81. The valve member 81 seats a tip of a seat end part 54a of the valve seat 54 to intercept a flow rate, and the flow rate is adjusted between the step part 84 and a side part of the seat end part 54a. This prevents accumulation of scale on a valve body part, prevents troubles and improves durability. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、パルスモータ等の電動機によって弁体の開閉操作を行う電動弁に関し、特に、流体の微少流量の調整が可能な電動弁の弁体部分の構造に関する。   The present invention relates to a motor-operated valve that opens and closes a valve body with an electric motor such as a pulse motor, and more particularly to a structure of a valve body portion of a motor-operated valve capable of adjusting a minute flow rate of a fluid.

暖房機器等の温水の配管系統の途中に介在させて流量制御を行う温水弁として従来から電動弁が使用されている。図４は、従来技術に係る下記特許文献１に開示された電動弁を示しており、該電動弁１０は、配管接続部１２，１３、弁室１５及び上部にホルダ２０が設けられた弁本体１１と、上記ホルダ２０に合成樹脂製の絶縁フランジ３２を介して載置固定されたパルスモータ等の電動機３１と、弁本体１１内に装着されて前記電動機３１によって駆動される弁ステム２１と、弁ステム２１の一端に取付固定されている弁体４０と、弁本体１１内に形成された環状弁座部１４を含む弁開閉部と、を備えている。   Conventionally, an electric valve has been used as a hot water valve for controlling a flow rate by interposing it in a hot water piping system such as a heating device. FIG. 4 shows a motor-operated valve disclosed in the following Patent Document 1 according to the prior art. The motor-operated valve 10 includes a valve main body in which pipe connecting portions 12 and 13, a valve chamber 15 and a holder 20 are provided in the upper part. 11, a motor 31 such as a pulse motor mounted and fixed on the holder 20 via an insulating flange 32 made of synthetic resin, a valve stem 21 mounted in the valve body 11 and driven by the motor 31; The valve body 40 is attached and fixed to one end of the valve stem 21, and the valve opening / closing part including the annular valve seat part 14 formed in the valve main body 11.

上記公知の手段の電動弁１０は、弁本体１１（環状弁座部１４）が真鍮で成形されている一方、弁体４０の閉鎖弁部材４１はテフロン等の合成樹脂で成形されており、その使用材料を異にすることで熱膨張率が異なることから、低温の流体に代えて温度差のある高温の温水を通過させると、前記環状弁座部１４と弁体４０の閉鎖弁部材４１との両部材の温度の上昇によって、両部材とも膨張してその径を拡大するが、真鍮よりもテフロン等の合成樹脂の熱膨張率が大きいので、前記閉鎖弁部材４１の方が膨張量が大きくなり、その外径を拡大する。
そして、該膨張量の差によって、図４の如き配置状態にある環状弁座部１４と弁体４０の閉鎖弁部材４１とは、常温水の状態で設定した開口間隙を狭める方向に作用して、流体の微少流量の正確な調整を阻害する要因となるが、環状弁座部１４と閉鎖弁部材４１の保持カラー４２の外側下端部との隙間を調整することで、電動弁の弁体部分を通過する流体の微少な流量調整を可能にすると共に、流量の多い状態での調整も行うようにしている。
特開平９−２９６８６８号公報 The motor-driven valve 10 of the known means has a valve body 11 (annular valve seat portion 14) formed of brass, while a closing valve member 41 of the valve body 40 is formed of synthetic resin such as Teflon. Since the coefficient of thermal expansion differs by using different materials, when the hot water having a temperature difference is passed instead of the low temperature fluid, the annular valve seat portion 14 and the closing valve member 41 of the valve body 40 As the temperature of both members increases, both members expand and expand their diameters. However, since the thermal expansion coefficient of synthetic resin such as Teflon is larger than that of brass, the closing valve member 41 has a larger expansion amount. And increase its outer diameter.
Then, due to the difference in expansion amount, the annular valve seat portion 14 and the closing valve member 41 of the valve body 40 in the arrangement state as shown in FIG. 4 act in the direction of narrowing the opening gap set in the room temperature water state. The valve body portion of the motor-operated valve is adjusted by adjusting the gap between the annular valve seat portion 14 and the outer lower end portion of the holding collar 42 of the closing valve member 41. It is possible to adjust the flow rate of the fluid that passes through the flow rate and adjust the flow rate at a high flow rate.
JP-A-9-296868

しかしながら、図４の従来の技術では、長期使用において、環状弁座部１４と弁体４０側の保持カラー４２の下端部との間に流体中に含まれるスケール（金属小片等）の詰まり問題が発生することがあり、メンテナンスや耐久性の観点から更なる改良が望まれていた。
したがって、本発明は、このような要望に鑑みてなされたものであって、その目的とするところは、電動弁において、弁体部分を通過する流体の微少な流量調整を可能とすると共に流量の多い状態での流量調整も可能であり，しかも、スケールの流動性を高めてその詰まりをなくし、トラブルの発生をなくして耐久性を高くすることにある。 However, in the conventional technique shown in FIG. 4, there is a problem of clogging of a scale (a small metal piece or the like) contained in the fluid between the annular valve seat portion 14 and the lower end portion of the holding collar 42 on the valve body 40 side during long-term use. Further improvement has been desired from the viewpoint of maintenance and durability.
Therefore, the present invention has been made in view of such a demand, and the object of the present invention is to enable a minute flow rate adjustment of a fluid passing through a valve body portion and a flow rate of a motor-operated valve. It is also possible to adjust the flow rate in a large number of states, and to improve the fluidity of the scale to eliminate clogging, to prevent troubles and to increase durability.

前記目的を達成すべく、本発明の係る電動弁は、電動機により駆動される弁体が弁座に対して接離する電動弁において、弁座は環状弁座部から成ると共に、弁体は弁部材と該弁部材を保持する保持部材から成り、弁部材は環状弁座部への着座部以外の部分に段差部を有し、弁部材が前記環状弁座部のシート端部に着座することで流体の流れを遮断し、弁部材が前記環状弁座部のシート端部に近接することで前記段差部とシート端部の側部との間で流体の流量を調整することを特徴とする。   In order to achieve the above object, the motor-operated valve according to the present invention is a motor-operated valve in which a valve body driven by an electric motor contacts and separates from the valve seat, the valve seat is composed of an annular valve seat portion, and the valve body is a valve A member and a holding member for holding the valve member, the valve member having a step portion other than the seating portion on the annular valve seat portion, and the valve member seated on the seat end portion of the annular valve seat portion The flow of the fluid is blocked by the valve member, and the flow rate of the fluid is adjusted between the stepped portion and the side portion of the seat end portion by approaching the seat end portion of the annular valve seat portion. .

また、本発明の他の態様に係る電動弁は、弁本体と、該弁本体に形成される環状弁座部と、弁体と、該弁体を弁座に対して接離させる弁ステムとを備えた電動弁において、前記弁体は、前記環状弁座部に着座する円盤状の弁部材と該弁部材を保持する保持部材とを備え、前記弁部材の下部内周部分は、弁体を環状弁座部に近接させた状態において、環状弁座部に形成されたシート端部の内周面に隙間を形成して位置するように形成し、該間隙で流体の流量を調整することを特徴とする。   An electric valve according to another aspect of the present invention includes a valve main body, an annular valve seat portion formed on the valve main body, a valve body, and a valve stem that contacts and separates the valve body from the valve seat. The valve body includes a disc-shaped valve member that is seated on the annular valve seat portion and a holding member that holds the valve member, and a lower inner peripheral portion of the valve member includes a valve body In a state where the valve is in the vicinity of the annular valve seat, a gap is formed on the inner peripheral surface of the seat end formed in the annular valve seat, and the fluid flow rate is adjusted by the gap. It is characterized by.

そして、本発明の電動弁の具体的態様としては、前記いずれかの手段において、環状弁座部のシート端部は、その断面形状が半円形状であることを特徴とする。
そして、本発明の電動弁の更なる具体的態様としては、前記いずれかの手段において、環状弁座部のシート端部は、上記隙間を形成する面がテーパ状であることを特徴とする。 And as a specific aspect of the motor-operated valve of the present invention, in any one of the above means, the seat end of the annular valve seat has a semicircular cross-sectional shape.
As a further specific aspect of the electric valve of the present invention, in any one of the above means, the seat end portion of the annular valve seat portion is characterized in that the surface forming the gap is tapered.

このように構成された本発明の電動弁は、入口側通路を介して流入した流体が環状弁座部と弁体との間の開口間隙を通過し、弁室を介して出口側通路を通って送出される。この時、電動機をパルス信号等により回動させると、回動によって弁ステムが上下摺動し、パルス信号の数量に比例した量だけ弁体の上下位置が移動し、前記環状弁座部と弁体との間の開口間隙を調整して流れる流体の流通量を調整する。また、環状弁座部と弁体との間を流れる流体を完全に閉鎖遮断をする場合は、環状弁座部のシート端部の先端に弁体の弁部材の下面を着座して圧接接触させる。   In the motor-operated valve of the present invention configured as described above, the fluid flowing in through the inlet side passage passes through the opening gap between the annular valve seat and the valve body, and passes through the outlet side passage through the valve chamber. Are sent out. At this time, when the electric motor is rotated by a pulse signal or the like, the valve stem slides up and down due to the rotation, and the vertical position of the valve body moves by an amount proportional to the quantity of the pulse signal. The amount of fluid flowing is adjusted by adjusting the opening gap between the body and the body. Further, when the fluid flowing between the annular valve seat and the valve body is completely closed and shut off, the lower surface of the valve member of the valve body is seated and brought into pressure contact with the tip of the seat end of the annular valve seat. .

また、前記環状弁座部と前記弁体との間を流れる流量の調整は、前記弁部材の段差部と前記環状弁座部のシート端部の内周部との間の開口間隙の幅を調整することで流量の調整を行う。   The flow rate between the annular valve seat portion and the valve body is adjusted by adjusting the width of the opening gap between the step portion of the valve member and the inner peripheral portion of the seat end portion of the annular valve seat portion. Adjust the flow rate by adjusting.

そして、本発明の電動弁は、環状弁座部のシート端部の断面形状が半円形状で、前記弁部材の段差部の下端部が弁部材の下面（当接面）より下方に突出し、かつ、突出部の外側に面取角部を備えていることによって、弁体の閉鎖位置からの移動初期においては、前記弁体の上下移動距離に対して前記面取角部と前記環状弁座部のシート端部との開口間隙は少ししかその間隙幅を広げないので、微小な開口間隙の調節が行い得て、流体流量の微少調整を可能にしている。   And the motor operated valve of the present invention has a semicircular cross-sectional shape at the seat end of the annular valve seat, and the lower end of the stepped portion of the valve member protrudes downward from the lower surface (contact surface) of the valve member, In addition, since the chamfered corner portion is provided outside the protruding portion, the chamfered corner portion and the annular valve seat with respect to the vertical movement distance of the valve body at the initial stage of movement from the closed position of the valve body. Since the gap between the opening and the sheet end portion of the part is slightly widened, the fine opening gap can be adjusted, and the fluid flow rate can be finely adjusted.

以上の説明から理解されるように、本発明の電動弁は、弁体と環状弁座部とが近接している状態において、弁体の弁部材の下部の段差部を環状弁座部のシート端部の内周に位置させて、弁部材の下部と環状弁座部のシート端部との間の間隙で流量調整する構成としたので、通常の流量調整と必要に応じて行う微少の流量調整との両方の調整とを正確にかつ円滑に行うことができる。
また、本発明は上記構成により、弁部材の下部と環状弁座部のシート端部との間の間隙入口部で絞る（流量調整する）から、スケールは流れやすく、たまりにくい。又、テフロン等の合成樹脂のためスケールは付着しにくく、はさまりにくい。また、環状弁座部のシート端部の内周（絞り部）を、テーパ面とすれば、このテーパ面の傾斜角度により、任意の流量設計を行うことができる。 As can be understood from the above description, the motor-operated valve of the present invention is configured so that the stepped portion at the lower part of the valve member of the valve body is located in the seat of the annular valve seat portion when the valve body and the annular valve seat portion are close to each other. The flow rate is adjusted by the gap between the lower part of the valve member and the seat end of the annular valve seat, located on the inner periphery of the end, so that the normal flow rate adjustment and the minute flow rate that is performed as necessary Both the adjustment and the adjustment can be performed accurately and smoothly.
Further, according to the present invention, the scale is squeezed at the gap inlet portion between the lower portion of the valve member and the seat end portion of the annular valve seat portion (the flow rate is adjusted). In addition, the scale does not easily adhere and does not get stuck because of a synthetic resin such as Teflon. Further, if the inner periphery (throttle portion) of the seat end portion of the annular valve seat portion is a tapered surface, an arbitrary flow rate design can be performed by the inclination angle of the tapered surface.

以下、本発明の一実施形態を図面を参照しながら説明する。図１は本発明の一実施形態の電動弁５０の縦断面図、図２は図１の電動弁５０の弁体と環状弁座部との作動状態（（Ａ）閉鎖、（Ｂ）開口）を示す作動断面図、図３は図１の電動弁５０の流量調整状態を示す説明図である。
（弁本体５１）
例えば、真鍮等の材料で形成される弁本体５１は、上部にホルダ接続部５９を立設し、該ホルダ接続部５９に同様に真鍮等の材料で形成されたホルダ６０を嵌合取付固定しており、該ホルダ６０の上部には、例えば合成樹脂製の絶縁フランジ７２を介してパルスモータ等の電動機７１を載置固定している。
前記弁本体５１の両側には、ネジ切りされた配管接続部５２、５３が上下にその位置を異にして備えられていると共に、該弁本体５１の下部５８は密閉状となっている。その内部には弁室５５が構成され、弁室５５の上部は前記ホルダ接続部５９に嵌合するホルダ６０によって閉鎖されている。弁室５５内には弁体８０が配置され、弁体８０はホルダ６０に摺動可能に支持された弁ステム６１に取付固定されている。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a longitudinal sectional view of a motor-operated valve 50 according to an embodiment of the present invention, and FIG. 2 is an operating state of a valve body and an annular valve seat portion of the motor-operated valve 50 of FIG. 1 ((A) closed, (B) opening). FIG. 3 is an explanatory view showing a flow rate adjustment state of the motor-operated valve 50 of FIG.
(Valve body 51)
For example, the valve main body 51 formed of a material such as brass has a holder connecting portion 59 standing on the upper portion, and a holder 60 formed of a material such as brass is similarly fitted and fixed to the holder connecting portion 59. An electric motor 71 such as a pulse motor is mounted and fixed on the holder 60 via an insulating flange 72 made of, for example, synthetic resin.
On both sides of the valve body 51, threaded pipe connection parts 52 and 53 are provided at different positions in the vertical direction, and the lower part 58 of the valve body 51 is sealed. A valve chamber 55 is formed therein, and the upper portion of the valve chamber 55 is closed by a holder 60 fitted to the holder connecting portion 59. A valve body 80 is disposed in the valve chamber 55, and the valve body 80 is attached and fixed to a valve stem 61 slidably supported by a holder 60.

前記弁本体５１の配管接続部５２内には、入口側通路５２ａが穿設されていると共に、前記配管接続部５３には出口側通路５３ａが穿設され、両通路５２ａ、５３ａは、前記弁室５５に連通接続している。前記弁室５５の上部のホルダ接続部５９の内空部５９ａには、前記ホルダ６０が外側Ｏリング６２を介在して挿入嵌合され、ロックナット６３を前記ホルダ接続部５９の外周に刻設したネジに螺合することによってホルダ６０を弁本体５１に取付固定している。   An inlet side passage 52a is bored in the pipe connection portion 52 of the valve body 51, and an outlet side passage 53a is bored in the pipe connection portion 53. Both the passages 52a, 53a The chamber 55 is connected in communication. The holder 60 is inserted and fitted into the inner space 59 a of the holder connecting portion 59 at the upper part of the valve chamber 55 via an outer O-ring 62, and a lock nut 63 is engraved on the outer periphery of the holder connecting portion 59. The holder 60 is fixedly attached to the valve body 51 by screwing with the screw.

前記弁ステム６１の中間部は、一対のＯリング６９、６９を介在してホルダ６０に摺動可能に軸支され、弁ステム６１の上端は、拡大されて駆動軸保持部６１ａを形成している。駆動軸保持部６１ａは凹状部６１ｃを備え、凹状部６１ｃ内には剛球体６４を介在して駆動軸６５の下端部６５ａが挿入接触され、該駆動軸６５の上端部６５ｂは電動機７１の回転軸６６に係合している。また、駆動軸６５の中間部は雄ネジ部６５ｃとされ、前記ホルダ６０に取付固定された駆動軸ガイド６７に刻設された雌ネジ６７ａに螺合されている。前記駆動軸保持部６１ａの下面とホルダ６０の筒内上面との間にはコイルスプリング７０が介在され、弁ステム６１を常時上方に付勢している。   An intermediate portion of the valve stem 61 is slidably supported by the holder 60 with a pair of O-rings 69 and 69 interposed therebetween, and an upper end of the valve stem 61 is enlarged to form a drive shaft holding portion 61a. Yes. The drive shaft holding portion 61a includes a concave portion 61c, and a lower end portion 65a of the drive shaft 65 is inserted into and contacted with the rigid portion 64c through the concave portion 61c. The shaft 66 is engaged. An intermediate portion of the drive shaft 65 is a male screw portion 65c and is screwed into a female screw 67a engraved in a drive shaft guide 67 attached and fixed to the holder 60. A coil spring 70 is interposed between the lower surface of the drive shaft holding portion 61a and the cylinder upper surface of the holder 60, and always biases the valve stem 61 upward.

（弁体８０）
図２は、弁体８０の構造及び作動状態を示すものであって、図２の（Ａ）は、弁体８０の閉鎖遮断状態を示すものであり、図２の（Ｂ）は開口状態を示すものである。図２（Ａ）（Ｂ）に示されているように、入口側通路５２ａと弁室５５との接続部の弁室５５側には、環状弁座部５４が形成され、該環状弁座部５４のシート端部５４ａはその断面形状が半径Ｒの半円状に形成されている。
前記弁ステム６１は、その下部に弁体８０を取付固定する軸端部６１ｂを備え、弁体８０は、三部材、即ち、弁座部５４に接触して閉鎖する弁部材８１、弁部材の保持部材８２を構成する外カラー８２ａ及び内カラー８２ｂとを備えている。また、三部材はその中心に前記弁ステム６１の軸端部６１ｂを嵌合して軸端部６１ｂの端をかしめることによって弁ステム２１に取付固定されている。 (Valve 80)
2 shows the structure and operating state of the valve body 80. FIG. 2A shows the closed state of the valve body 80, and FIG. 2B shows the open state. It is shown. As shown in FIGS. 2A and 2B, an annular valve seat portion 54 is formed on the valve chamber 55 side of the connection portion between the inlet-side passage 52a and the valve chamber 55, and the annular valve seat portion. The sheet end portion 54 a of the sheet 54 is formed in a semicircular shape with a radius R.
The valve stem 61 is provided with a shaft end portion 61b for attaching and fixing the valve body 80 to the lower portion thereof. The valve body 80 includes three members, that is, a valve member 81 that contacts and closes the valve seat portion 54, and a valve member 81 An outer collar 82a and an inner collar 82b constituting the holding member 82 are provided. The three members are attached and fixed to the valve stem 21 by fitting the shaft end portion 61b of the valve stem 61 to the center thereof and caulking the end of the shaft end portion 61b.

（弁部材８１）
弁体８０の弁部材８１は、ゴム材、テフロン等の合成樹脂からなる弾性体で形成されるとともに、リング状をしており、保持部材８２を構成する外カラー８２ａと内カラー８２ｂとはＳＵＳ等の材料で形成されると共に、該両カラー８２ａ，８２ｂで外周及び内周から弁部材８１をサンドイッチ状に挟持している。また、弁部材８１は、その下面内周で、前記環状弁座部５４のシート端部５４ａに当接しない部分に段差部８４を備えている。
段差部８４は、シート端部５４ａとの当接面８４ｂに連続する垂下面８４ａと面取角部８４ｃと水平面８４ｅとを形成しており、垂下面８４ａは、環状弁座部５４のシート端部５４ａの内周面と共に流路を構成する。そして、弁体８０が閉鎖状態（図２（Ａ））にあるときは、前記環状弁座部５４の外周面に極めて微小な間隙を置いて配置されるべく形成されている。 (Valve member 81)
The valve member 81 of the valve body 80 is formed of an elastic body made of a synthetic resin such as a rubber material or Teflon and has a ring shape. The outer collar 82a and the inner collar 82b constituting the holding member 82 are made of SUS. The valve member 81 is sandwiched between the outer periphery and the inner periphery by the collars 82a and 82b. Further, the valve member 81 includes a stepped portion 84 at a portion of the inner periphery of the lower surface thereof that does not contact the seat end portion 54a of the annular valve seat portion 54.
The step portion 84 forms a suspended surface 84a, a chamfered corner portion 84c, and a horizontal surface 84e that are continuous with the contact surface 84b with the seat end portion 54a, and the suspended surface 84a is the seat end of the annular valve seat portion 54. The flow path is configured together with the inner peripheral surface of the portion 54a. When the valve body 80 is in the closed state (FIG. 2A), it is formed so as to be disposed with a very small gap on the outer peripheral surface of the annular valve seat portion 54.

弁体８０と環状弁座部５４との間の閉鎖及び流量調整は、閉鎖においては、弁体８０の弁部材８１の当接面８４ｂが環状弁座部５４のシート端部５４ａの先端に接触して着座することで行い、流量調整においては、弁部材の下部の段差部８４の垂下面８４ａと環状弁座部５４のシート端部５４ａの内側円弧状部との間の間隙を調整することで行うものである。なお、段差部８４の垂下面８４ａと水平面８４ｅとの間には面取角部８４ｃが形成されている。   In closing and adjusting the flow rate between the valve body 80 and the annular valve seat portion 54, the contact surface 84 b of the valve member 81 of the valve body 80 contacts the tip of the seat end portion 54 a of the annular valve seat portion 54. In the flow rate adjustment, the gap between the hanging surface 84a of the stepped portion 84 at the lower part of the valve member and the inner arcuate portion of the seat end portion 54a of the annular valve seat portion 54 is adjusted. Is what you do. A chamfered corner portion 84c is formed between the hanging surface 84a of the step portion 84 and the horizontal surface 84e.

図３は、環状弁座部５４と弁部材８１の段差部８４との流量調整時の位置関係を更に詳細に示したものであり、段差部８４の垂下面８４ａ下端とシート端部５４ａの円弧状部の中心点との距離ａとし、且つ、円弧状部の半径をＲとすると、その間隙は、ａ−Ｒとなる。
弁体８０が閉鎖状態にある時（Ｌ0の位置）は、垂下面８４ａ下端（面取角部８４ｃの上端）は、環状弁座部５４の半円状シート端部の外側面に極めて微小な間隙を於いて配置された状態にあるが、弁体８０を開口方向に移動すべく、例えばＬ1の位置まで上昇させると、面取角部８４ｃと半円状シート端部の内側面との間隙幅ａを順次広くする。 3 shows in more detail the positional relationship between the annular valve seat portion 54 and the stepped portion 84 of the valve member 81 when adjusting the flow rate. The lower end of the drooping surface 84a of the stepped portion 84 and the circle of the seat end portion 54a are shown. If the distance a from the center point of the arc-shaped portion is a and the radius of the arc-shaped portion is R, the gap is a-R.
When the valve body 80 is in the closed state (the position of L0), the lower end of the drooping surface 84a (the upper end of the chamfered corner portion 84c) is extremely minute on the outer surface of the semicircular seat end portion of the annular valve seat portion 54. When the valve body 80 is raised to the position of L1, for example, in order to move in the opening direction, the gap between the chamfered corner portion 84c and the inner side surface of the semicircular sheet end portion is in a state of being arranged with a gap. The width a is gradually increased.

具体的には、弁体８０が閉鎖状態の位置Ｌ0 から距離ｂだけ上昇して開口状態の位置Ｌ1 に移動したとき、段差部８４の面取角部８４ｃと環状弁座部５４のシート端部５４ａとの間隙幅はａ1−Ｒ となる。そして、更に距離ｂだけ上昇して、開口状態の位置Ｌ2 に移動したとき、面取角部８４ｃと環状弁座部５４のシート端部５４ａとの間隙の幅はａ2−Ｒ となるが、該間隙ａ2−Ｒ は、弁体８０の上昇距離が２ｂと二倍に移動した場合でも幅ａ1は二倍以下の移動に留まる。
即ち、弁体８０の上下移動距離に対して面取角部８４ｃと環状弁座部５４のシート端部５４ａとの間隙幅ａ−Ｒは、直線的には変化せず、２次曲線的に変化する。言い換えるならば、弁体８０の閉鎖位置からの移動初期においては、弁体８０の移動距離Ｌに対して面取角部８４ｃと環状弁座部５４のシート端部５４ａとの間隙幅ａ−Ｒは少ししかその間隙幅を広げず、該間隙の微小な調節が行い得て、流体流量の微少調整を可能にしている。この微少調整が行え得る理由は、環状弁座部５４のシート端部５４ａでその断面形状が半径Ｒの半円形状に形成されていることに起因している。 Specifically, when the valve body 80 is lifted from the closed position L0 by the distance b and moved to the open position L1, the chamfered corner 84c of the stepped portion 84 and the seat end of the annular valve seat 54 are shown. The gap width with 54a is a1-R. When the distance b further increases and moves to the open position L2, the width of the gap between the chamfered corner portion 84c and the seat end portion 54a of the annular valve seat portion 54 becomes a2 -R. The gap a2-R remains within the movement of the width a1 less than twice even when the rising distance of the valve body 80 is doubled to 2b.
That is, the gap width a-R between the chamfered corner portion 84c and the seat end portion 54a of the annular valve seat portion 54 with respect to the vertical movement distance of the valve body 80 does not change linearly but in a quadratic curve. Change. In other words, in the initial stage of movement of the valve body 80 from the closed position, the gap width aR between the chamfered corner portion 84c and the seat end portion 54a of the annular valve seat portion 54 with respect to the movement distance L of the valve body 80. Only slightly increases the width of the gap, and the gap can be finely adjusted to allow fine adjustment of the fluid flow rate. The reason that this fine adjustment can be made is that the seat end portion 54a of the annular valve seat portion 54 is formed in a semicircular shape having a radius R.

前記弁体８０が更に移動すると、前記流量の調整は、前記半円形状の影響を受けることが少なくなり、前記弁体８０の移動距離に対して略直線状に変化することとなる。   When the valve body 80 further moves, the flow rate adjustment is less affected by the semicircular shape, and changes substantially linearly with respect to the moving distance of the valve body 80.

次に、本実施形態の電動弁５０の作動について説明する。暖房機器の供給源から供給される水もしくは温水等の流体は、入口側通路５２ａから供給され、環状弁座部５４と弁体８０との間の間隙を通過した後、弁室５５を介して出口側通路５３ａを通って暖房器等の機器に送出される。この時、パルスモータ等の電動機７１をパルス信号等により適宜回動させると、前記電動機７１の回転軸６６が回転し、前記回転軸６６と係合している駆動軸６５を回転させる。該駆動軸６５の回転によって該駆動軸６５自体が上下に移動することで、弁ステム６１を上下摺動させる。   Next, the operation of the electric valve 50 according to the present embodiment will be described. Water supplied from the supply source of the heating equipment or fluid such as hot water is supplied from the inlet-side passage 52a, passes through the gap between the annular valve seat 54 and the valve body 80, and then passes through the valve chamber 55. It is sent to a device such as a heater through the outlet side passage 53a. At this time, when the electric motor 71 such as a pulse motor is appropriately rotated by a pulse signal or the like, the rotating shaft 66 of the electric motor 71 rotates and the driving shaft 65 engaged with the rotating shaft 66 is rotated. The drive shaft 65 itself moves up and down by the rotation of the drive shaft 65, thereby sliding the valve stem 61 up and down.

該弁ステム６１は、前記パルス信号の量に比例した量だけ上下方向に移動し、前記弁座部５４のシート端部５４ａの曲率中心（半径Ｒ）と前記弁体８０の前記面取角部８４ｃとの間の間隙幅ａを調整し、該幅ａ−Ｒの間隙を流れる流体の流通量を調整する。また、前記環状弁座部５４と前記弁体８０との完全閉鎖遮断は、前記環状弁座部５４のシート端部５４ａの先端に弁部材８１が接触して着座することによって行われる。   The valve stem 61 moves in the vertical direction by an amount proportional to the amount of the pulse signal, and the center of curvature (radius R) of the seat end portion 54a of the valve seat portion 54 and the chamfered corner portion of the valve body 80. The gap width “a” with respect to 84 c is adjusted, and the circulation amount of the fluid flowing through the gap of the width “a-R” is adjusted. Further, the complete closing and blocking between the annular valve seat portion 54 and the valve body 80 is performed by the valve member 81 contacting and seating on the front end of the seat end portion 54a of the annular valve seat portion 54.

前記流体の流通量の通常の調整は、前記弁座部５４と前記弁体８０との間隙ｂを、例えば、０〜２mmの範囲で調整することで行うものであるが、流量を絞って調整を行う場合には、間隔の幅ａ−Ｒを狭くした状態の領域Ｉ、即ち、μ単位の微小間隙として温水の流通量を調整している。   The normal adjustment of the flow rate of the fluid is performed by adjusting the gap b between the valve seat portion 54 and the valve body 80 within a range of, for example, 0 to 2 mm. Is performed, the circulation amount of the hot water is adjusted as a region I in a state where the interval width aR is narrowed, that is, a micro gap of μ units.

本実施形態においては、環状弁座部５４と、弁体８０の弁部材８１の流量調整する段差部８４とがともに環状に形成され、かつ、前記環状弁座部５４の内部からの流体が環状弁座部５４の内周に位置する弁部材８１の流量調整する段差部８４に向けて図２（Ｂ）の矢印の如く放射スカート状に流れることで、弁体８０に求心力が働き、該弁体８０自体がぶれの少ない安定した作動する。   In the present embodiment, the annular valve seat portion 54 and the stepped portion 84 for adjusting the flow rate of the valve member 81 of the valve body 80 are both formed in an annular shape, and the fluid from the inside of the annular valve seat portion 54 is annular. The centripetal force acts on the valve body 80 by flowing in a radial skirt shape as shown by the arrow in FIG. 2B toward the stepped portion 84 for adjusting the flow rate of the valve member 81 located on the inner periphery of the valve seat portion 54. The body 80 itself operates stably with little shaking.

また、本実施形態では、流量調整部を構成する前記面取角部８４ｃと前記環状弁座部５４の半円状シート端部５４ａとを比較的容易な機械加工精度で形成できる。   Further, in the present embodiment, the chamfered corner portion 84c constituting the flow rate adjusting portion and the semicircular seat end portion 54a of the annular valve seat portion 54 can be formed with relatively easy machining accuracy.

本実施形態においては、電動弁を暖房機器の温水供給装置に実施するものとして説明したが、本発明の電動弁は前記実施形態に限定されるものではなく、冷媒を供給する管路に配置される弁、及び、冷却液として使用される油供給管路の弁としても使用できるものである。   In the present embodiment, the motor-operated valve is described as being implemented in the hot water supply device of the heating device. And a valve for an oil supply line used as a coolant.

また、本実施形態においては、環状弁座部のシート端部は、その断面形状を半円形状として示したが、該形状に限定されるものではなく、前記シート端部の外周部の断面形状をテーパ状とする等、微少の流量の調整が可能なように傾斜形状とすることもできる。更に、本実施形態においては、段差部の角部を面取りし、該面取角部を備える形状として示したが、面取りせずに、該下端部の内側角部を流量調整部とすることもできる。   In the present embodiment, the seat end portion of the annular valve seat portion is shown as a semicircular cross-sectional shape, but is not limited to this shape, and the cross-sectional shape of the outer peripheral portion of the seat end portion It is also possible to form an inclined shape so that a minute flow rate can be adjusted. Furthermore, in the present embodiment, the corner portion of the stepped portion is chamfered and shown as a shape including the chamfered corner portion, but the inner corner portion of the lower end portion may be used as a flow rate adjusting portion without chamfering. it can.

本発明の一実施形態の電動弁の縦断面図。The longitudinal cross-sectional view of the motor operated valve of one Embodiment of this invention. 図１の電動弁の弁体と環状弁座部との作動状態（（Ａ）閉鎖、（Ｂ）開口）を示す作動断面図。The operation | movement sectional drawing which shows the operation state ((A) closing, (B) opening) with the valve body and annular valve seat part of the electrically operated valve of FIG. 図１の電動弁の流量調整状態を示す説明図。Explanatory drawing which shows the flow volume adjustment state of the motor operated valve of FIG. 従来の電動弁の要部拡大断面図。The principal part expanded sectional view of the conventional motor operated valve.

符号の説明Explanation of symbols

１０・・電動弁（従来技術）１１・・弁本体 １２，１３・・配管接続部
１４・・環状弁座部 １４ａ・・シート端部 １５・・弁室 ２０・・ホルダ
２１・・弁ステム ３１・・電動機 ３２・・絶縁フランジ
４０・・弁体 ４１・・閉鎖弁部材 ４２・・保持カラー
５０・・電動弁（本発明） ５１・・弁本体 ５２・・配管接続部
５２ａ・・入口側通路 ５３・・配管接続部 ５３ａ・・出口側通路
５４・・弁座（環状弁座部） ５４ａ・・シート端部 ５５・・弁室
５８・・下部 ５９・・ホルダ接続部 ５９ａ・・内空部 ６０・・ホルダ 10.-Motorized valve (prior art) 11.-Valve body 12, 13.-Pipe connection part 14.-Ring valve seat part 14a.-Seat end part 15.-Valve chamber 20.-Holder 21--Valve stem 31. · · Motor 32 · · Insulating flange 40 · · Valve body 41 · · Closing valve member 42 · · Holding collar 50 · · Electric valve (the present invention) 51 · · Valve body 52 · · Pipe connection 52a · · Inlet passage 53 .. Piping connection part 53a .. Outlet side passage 54 .. Valve seat (annular valve seat part) 54a .. Seat end part 55 .. Valve chamber 58 .. Lower part 59 .. Holder connection part 59a. 60 .. Holder

６１・・弁ステム ６１ａ・・駆動軸保持部 ６１ｂ・・軸端部
６１ｃ・・凹状部 ６２・・外側Ｏリング ６３・・ロックナット
６４・・剛球体 ６５・・駆動軸 ６５ａ・・下端部 ６５ｂ・・上端部
６５ｃ・・雄ネジ部６６・・回転軸 ６７・・駆動軸ガイド ６７ａ・・雌ネジ
６９・・Ｏリング ７０・・コイルスプリング ７１・・電動機 61 ... Valve stem 61a ... Drive shaft holding part 61b ... Shaft end 61c ... Concave part 62 ... Outside O-ring 63 ... Lock nut 64 ... Rigid sphere 65 ... Drive shaft 65a ... Lower end 65b · · Upper end portion 65c · · Male screw portion 66 · · Rotary shaft 67 · · Drive shaft guide 67a · · Female screw 69 · · O-ring 70 · · Coil spring 71 · · Electric motor

７２・・絶縁フランジ ８０・・弁体 ８１・・弁部材
８２・・保持部材 ８２ａ・・外保持カラー ８２ｂ・・内保持カラー
８４・・段差部 ８４ａ・・垂下面 ８４ｂ・・当接面
８４ｃ・・面取角部 ８４ｅ・・水平面 72 ·· Insulating flange 80 · · Valve body 81 · · Valve member 82 · · Holding member 82a · · Outer holding collar 82b · · Inner holding collar 84 · · Stepped portion 84a · · Vertical surface 84b · · Contact surface 84c · ·・ Chamfer corner 84e ・ ・ Horizontal plane

Claims (4)

電動機により駆動される弁体が弁座に対して接離する電動弁において、弁座は環状弁座部から成ると共に、弁体は弁部材と該弁部材を保持する保持部材から成り、弁部材は環状弁座部への着座部以外の部分に段差部を有し、弁部材が前記環状弁座部のシート端部に着座することで流体の流れを遮断し、弁部材が前記環状弁座部のシート端部に近接することで前記段差部とシート端部の側部との間で流体の流量を調整することを特徴とする電動弁。   In an electric valve in which a valve body driven by an electric motor contacts and separates from a valve seat, the valve seat includes an annular valve seat portion, and the valve body includes a valve member and a holding member that holds the valve member. Has a step portion at a portion other than the seating portion on the annular valve seat portion, and the valve member is seated on the seat end portion of the annular valve seat portion to block the flow of fluid, and the valve member is disposed on the annular valve seat. A motor-operated valve characterized by adjusting a flow rate of fluid between the stepped portion and a side portion of the seat end portion by approaching the seat end portion of the seat portion. 弁本体と、該弁本体に形成される環状弁座部と、弁体と、該弁体を弁座に対して接離させる弁ステムとを備えた電動弁において、前記弁体は、前記環状弁座部に着座する円盤状の弁部材と該弁部材を保持する保持部材とを備え、前記弁部材の下部内周部分は、弁体を環状弁座部に近接させた状態において、環状弁座部に形成されたシート端部の内周面に隙間を形成して位置するように形成し、該間隙で流体の流量を調整することを特徴とする電動弁。   An electric valve comprising a valve body, an annular valve seat portion formed on the valve body, a valve body, and a valve stem for moving the valve body toward and away from the valve seat, the valve body is the annular A disc-shaped valve member seated on the valve seat portion and a holding member for holding the valve member, and a lower inner peripheral portion of the valve member is a ring valve in a state where the valve body is brought close to the annular valve seat portion. A motor-operated valve, characterized in that a gap is formed on an inner peripheral surface of a seat end formed in a seat so as to be positioned, and a fluid flow rate is adjusted by the gap. 前記環状弁座部のシート端部は、その断面形状が半円形状であることを特徴とする請求項１又は請求項２に記載の電動弁。   The motor-operated valve according to claim 1 or 2, wherein the seat end portion of the annular valve seat portion has a semicircular cross-sectional shape. 前記環状弁座部のシート端部は、上記隙間を形成する面がテーパ状であることを特徴とする請求項１又は請求項２に記載の電動弁。   The motor-operated valve according to claim 1 or 2, wherein a surface of the seat end portion of the annular valve seat portion is tapered.
JP2004143274A 2004-05-13 2004-05-13 Motor-driven valve Pending JP2005325887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004143274A JP2005325887A (en) 2004-05-13 2004-05-13 Motor-driven valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004143274A JP2005325887A (en) 2004-05-13 2004-05-13 Motor-driven valve

Publications (1)

Publication Number Publication Date
JP2005325887A true JP2005325887A (en) 2005-11-24

Family

ID=35472401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004143274A Pending JP2005325887A (en) 2004-05-13 2004-05-13 Motor-driven valve

Country Status (1)

Country Link
JP (1) JP2005325887A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008051280A (en) * 2006-08-28 2008-03-06 Kayaba Ind Co Ltd Valve structure
WO2011068314A2 (en) * 2009-12-03 2011-06-09 주식회사 경동나비엔 Flow control valve and combustion device having same
US11415238B2 (en) 2020-04-01 2022-08-16 Nidec Tosok Corporation Electromagnetic valve and valve device
KR20220149340A (en) * 2021-04-30 2022-11-08 조광아이엘아이주식회사 High Pressure Safety-Relief Valve

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02116070U (en) * 1989-03-03 1990-09-17
JPH04111966U (en) * 1991-03-19 1992-09-29 シーケーデイ株式会社 flow regulating valve
JPH0540678U (en) * 1991-10-31 1993-06-01 愛三工業株式会社 Flow control valve
JPH0637662U (en) * 1992-10-23 1994-05-20 エヌテーシー工業株式会社 Motorized valve
JPH07151244A (en) * 1993-09-15 1995-06-13 Wabco Vermoegensverwaltung Gmbh Valve
JPH09296868A (en) * 1996-05-01 1997-11-18 Fuji Koki:Kk Motor-operated valve
JPH10196808A (en) * 1997-01-14 1998-07-31 Rinnai Corp Flow regulating valve
JP2003028448A (en) * 2001-07-18 2003-01-29 Noritz Corp Bathroom heater
JP2005016628A (en) * 2003-06-26 2005-01-20 Noritz Corp Motor valve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02116070U (en) * 1989-03-03 1990-09-17
JPH04111966U (en) * 1991-03-19 1992-09-29 シーケーデイ株式会社 flow regulating valve
JPH0540678U (en) * 1991-10-31 1993-06-01 愛三工業株式会社 Flow control valve
JPH0637662U (en) * 1992-10-23 1994-05-20 エヌテーシー工業株式会社 Motorized valve
JPH07151244A (en) * 1993-09-15 1995-06-13 Wabco Vermoegensverwaltung Gmbh Valve
JPH09296868A (en) * 1996-05-01 1997-11-18 Fuji Koki:Kk Motor-operated valve
JPH10196808A (en) * 1997-01-14 1998-07-31 Rinnai Corp Flow regulating valve
JP2003028448A (en) * 2001-07-18 2003-01-29 Noritz Corp Bathroom heater
JP2005016628A (en) * 2003-06-26 2005-01-20 Noritz Corp Motor valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008051280A (en) * 2006-08-28 2008-03-06 Kayaba Ind Co Ltd Valve structure
WO2011068314A2 (en) * 2009-12-03 2011-06-09 주식회사 경동나비엔 Flow control valve and combustion device having same
WO2011068314A3 (en) * 2009-12-03 2011-09-22 주식회사 경동나비엔 Flow control valve and combustion device having same
US11415238B2 (en) 2020-04-01 2022-08-16 Nidec Tosok Corporation Electromagnetic valve and valve device
KR20220149340A (en) * 2021-04-30 2022-11-08 조광아이엘아이주식회사 High Pressure Safety-Relief Valve
KR102533556B1 (en) * 2021-04-30 2023-05-17 조광아이엘아이주식회사 High Pressure Safety-Relief Valve

Similar Documents

Publication Publication Date Title
KR100212324B1 (en) Plate valve
JP6555895B2 (en) Motorized valve
US10474170B2 (en) Thermostatic shower valve
JP2012515309A (en) Electronically controllable mixing device for tap water
JP2018035840A (en) Electric-operated valve
US5356074A (en) Thermostatic mixing device
JP6595338B2 (en) Self-aligning disc
JP3762809B2 (en) Motorized valve
JP2005325887A (en) Motor-driven valve
JP5302517B2 (en) Flow control valve
JPH0743047B2 (en) Electric 3-way valve
JP2006153205A (en) Needle valve
US7032883B2 (en) Hybrid butterfly fluid control valve
KR100583828B1 (en) Flow rate control valve capable of adjusting room temperature
KR100734523B1 (en) A hot water distributor with header and valve one body type
JP4583974B2 (en) Needle valve
US2302252A (en) Thermostatic valve
JP2017201200A (en) Flow regulating valve
CN114198535B (en) Mixing unit and mixing tap comprising such a mixing unit
JP4376358B2 (en) Motorized valve
KR101542859B1 (en) Ball-Valve Divice
US20240035576A1 (en) Valve cartridge
TW571042B (en) Diaphragm-operated pressure regulating valve
JPH11132351A (en) Motor operated valve
EP2123954A2 (en) Tap/mixer unit for water systems

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20070510

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100209

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100216

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20100615