JPH083789Y2 - Motorized valve structure - Google Patents
Motorized valve structureInfo
- Publication number
- JPH083789Y2 JPH083789Y2 JP1987153758U JP15375887U JPH083789Y2 JP H083789 Y2 JPH083789 Y2 JP H083789Y2 JP 1987153758 U JP1987153758 U JP 1987153758U JP 15375887 U JP15375887 U JP 15375887U JP H083789 Y2 JPH083789 Y2 JP H083789Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- bearing
- valve body
- shaft
- screw
- 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
- Electrically Driven Valve-Operating Means (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、ルームエアコンや冷凍機などの冷凍サイク
ル中に用いられる電子制御膨張弁、又は一般の産業分野
でマイコンと組合わせて使用される比例制御弁として利
用される電動弁に関するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention is used in combination with an electronically controlled expansion valve used in a refrigeration cycle such as a room air conditioner or a refrigerator, or a microcomputer in general industrial fields. The present invention relates to an electric valve used as a proportional control valve.
［従来の技術］ 電気的駆動機構と弁を組合わせてマイコンにより制御
するバルブは、その一例として、第４図に示すような構
成のものが実用化されている。その構成を以下に説明す
る。[Prior Art] As an example of a valve which is controlled by a microcomputer by combining an electric drive mechanism and a valve, a valve having a structure shown in FIG. 4 has been put into practical use. The configuration will be described below.
従来のバルブは、駆動側１と弁体側２とからなり、こ
の両者はロックナット３により気密的に組み付けられて
いる。The conventional valve has a drive side 1 and a valve body side 2, both of which are hermetically assembled by a lock nut 3.
駆動側１は、電気的駆動機構４とギヤ５と出力シャフト
６と外周にねじを設けたドライバ７とからなり、このド
ライバ７はシャフトの回転により回動すると共に上下動
可能になっており、ドライバ７の先端は後述する弁８の
上端に対してピポット軸受状に接続されている。The drive side 1 is composed of an electric drive mechanism 4, a gear 5, an output shaft 6, and a driver 7 provided with a screw on the outer circumference. The driver 7 is rotated by the rotation of the shaft and is vertically movable. The tip of the driver 7 is connected to the upper end of a valve 8 described later in a pivot bearing shape.
弁体側２は、弁８と本体９とベローズ10とからなり、本
体９の上端部と弁８の中間部分にはベローズ10をハンダ
付けすることにより前記電気的駆動機構４側へ冷媒が流
出しないようになっている。次に動作について説明す
る。電気的駆動機構４の回転は、ギヤ５により減速され
出力シャフト６に回転可能に嵌合接続されたドライバ７
に伝達され、ドライバ７が上下に移動する。そして、ド
ライバ７の先端により押し付けられた弁８は前記ベロー
ズ10の弾性作用により上下動し、弁８と弁座11の隙間を
変化させ流量制御する。The valve body side 2 is composed of a valve 8, a body 9 and a bellows 10. The bellows 10 is soldered to the upper end portion of the body 9 and the intermediate portion of the valve 8 so that the refrigerant does not flow out to the electric drive mechanism 4 side. It is like this. Next, the operation will be described. The rotation of the electric drive mechanism 4 is decelerated by a gear 5 and a driver 7 rotatably fitted and connected to the output shaft 6.
And the driver 7 moves up and down. The valve 8 pressed by the tip of the driver 7 moves up and down by the elastic action of the bellows 10 to change the gap between the valve 8 and the valve seat 11 to control the flow rate.
また、図示しないが実開昭62-43276号公報には、弁体
に均圧路を設け駆動力を低減した電動膨張弁が示されて
いる。Although not shown, Japanese Utility Model Laid-Open No. 62-43276 discloses an electric expansion valve in which a valve body is provided with a pressure equalizing passage to reduce the driving force.
そして、この電動膨張弁においては、シャフトと共に
ロータが回転すると、シャフト中心部の係合溝に嵌め込
まれた推進軸（スプリングを介して弁体を内蔵されてい
る。）が回転しながら下降し、弁体が推進軸と共に回転
しながら弁口に接離するようになっている。Then, in this electric expansion valve, when the rotor rotates together with the shaft, the propulsion shaft (which has a valve body built in via a spring) fitted in the engagement groove at the center of the shaft descends while rotating. The valve body comes into contact with and separates from the valve opening while rotating together with the propulsion shaft.
［考案が解決しょうとする問題点］ 以上の様に構成された前者の従来品に於いては、弁８
を上方へ持ち上げる如く弁８に流体の圧力が直接作用し
ているので、図面に示されるような減速ギヤ５を用いて
トルクアップを図る必要があった。しかし減速ギヤ５を
用いると、バルブの大型化及び高価なものとなる問題点
があった。[Problems to be solved by the invention] In the former conventional product configured as described above, the valve 8
Since the fluid pressure is directly applied to the valve 8 so as to lift the valve upward, it is necessary to increase the torque by using the reduction gear 5 as shown in the drawing. However, when the reduction gear 5 is used, there is a problem that the valve becomes large and expensive.
また、図示しない後者の電動膨張弁においては、弁体
が回転しながら弁口を閉塞するものであるから、閉弁時
に弁体が弁口に食い込むという問題点があった。Further, in the latter electric expansion valve (not shown), the valve body closes the valve opening while rotating, so that there is a problem that the valve body bites into the valve opening when the valve is closed.
本考案は、上記のような問題点を解決するためになさ
れたもので、弁軸13と弁体23との間に、弁体の穴に固定
された外周リング23aと内周リング23bを備えた軸受24を
介して弁軸24の回転が弁体23に伝わらないように弁軸と
弁体とを間接的に接続し、弁座への弁体の食い込み防止
を図ることにより、小型で廉価な消費電力の少ない電動
弁の構造を提供することにある。The present invention has been made to solve the above problems, and is provided with an outer peripheral ring 23a and an inner peripheral ring 23b fixed between the valve shaft 13 and the valve body 23 in the hole of the valve body. Since the rotation of the valve shaft 24 is not transmitted to the valve body 23 via the bearing 24, the valve shaft and the valve body are indirectly connected to each other to prevent the valve body from biting into the valve seat, thereby making it compact and inexpensive. Another object of the present invention is to provide a structure of an electrically operated valve that consumes less power.
［問題点を解決するための手段］ この考案の電動弁は、上方より嵌着部13aとおねじ13b
とシャフト部13cと下端のおねじ13dに形成した弁軸13を
電気的駆動機構により回転させ、この回転をめねじを切
った推進軸受14により直進回転運動に変換する電動弁で
あって、上部を電気的駆動機構15に接続した本体I16
と、出入口パイプ17、18を有する本体II19とをシールガ
イド20を介して適宜な手段で結合し、前記本体I16の中
心部に室I21を形成すると共に出入口パイプ17につなが
る本体II19の下方に室II28を形成し、前記室I21内には
圧力P1の出入口パイプ17につながる室II28に位置する弁
体23の外周部を小径部にして上下に摺動可能で径を前記
本体IIの弁座の内径d1と同一寸法のφd2とする均圧部23
aを設けた弁体23を装着し、該弁体23のの中心部には穴2
3を設けると共に該穴23の中程に軸受24を装着し、該軸
受24を外周部におねじを設けた筒状の固定ねじ25により
前記軸受24を弁体23に固着すると共に内周リング24bの
内面には前記弁軸13下端のシャフト13cを内挿し、前記
弁軸13のおねじ13bと軸受24の上面との間に付勢手段27
を配置すると共にシャフト下端のおねじ13dに調節ねじ2
6をねじ込み該調節ねじ26の上端部が前記軸受24の内周
リング24bに当接するごとく固着し、弁体の穴23bと室I2
1とを連通させ、閉弁時には付勢手段27および軸受24を
介して弁体23を回動させることなく真っすぐに押し下
げ、開弁時には調節ねじ26にて弁体23に固着された軸受
24を持ち上げるようにして閉弁時に弁軸のおねじ13bと
推進軸受14のめねじが食い込むのを防止するようにした
ものである。[Means for Solving Problems] The motor-operated valve according to the present invention has a fitting portion 13a and a male screw 13b from above.
A motor-operated valve that rotates a valve shaft 13 formed on a shaft portion 13c and a male screw 13d at a lower end by an electric drive mechanism, and converts this rotation into a rectilinear rotary motion by a propelling bearing 14 having a female thread cut off. Body I16 in which is connected to the electric drive mechanism 15
And a main body II19 having inlet / outlet pipes 17 and 18 by a suitable means via a seal guide 20 to form a chamber I21 at the center of the main body I16 and a chamber below the main body II19 connected to the inlet / outlet pipe 17. II28 is formed, and the outer peripheral portion of the valve body 23 located in the chamber II28 connected to the inlet / outlet pipe 17 for the pressure P1 is formed in the chamber I21 so that the outer peripheral portion of the valve body 23 can be slid up and down and the diameter of the valve seat of the main body II can be changed. Pressure equalizing section 23 with φd2 having the same size as the inner diameter d1
The valve body 23 provided with a is attached, and the hole 2 is provided at the center of the valve body 23.
3 and a bearing 24 is mounted in the middle of the hole 23, and the bearing 24 is fixed to the valve body 23 by a cylindrical fixing screw 25 provided with a screw on the outer periphery of the bearing 24 and the inner ring. The shaft 13c at the lower end of the valve shaft 13 is inserted into the inner surface of 24b, and the biasing means 27 is provided between the male screw 13b of the valve shaft 13 and the upper surface of the bearing 24.
And place the adjustment screw 2 on the male screw 13d at the bottom of the shaft.
6 is screwed in and fixed so that the upper end of the adjusting screw 26 abuts on the inner peripheral ring 24b of the bearing 24, and the hole 23b of the valve body and the chamber I2
When the valve is closed, the valve body 23 is pushed straight through the biasing means 27 and the bearing 24 without rotating when the valve is closed, and the bearing fixed to the valve body 23 by the adjusting screw 26 when the valve is opened.
By lifting 24, the male screw 13b of the valve shaft and the female screw of the propulsion bearing 14 are prevented from biting when the valve is closed.
［作用］ 本考案の電動弁は、弁体24の内面に、外周部におねじ
を設けた筒状の固定ねじ25を用いて内周リング24aと外
周リング24bを備えた軸受24（ベアリング）を固定し、
この弁体23には常時弁軸13の回転を伴う上下動と関係な
く、付勢手段27によって弁体23が弁座22に当接するよう
に押し下げられているため、前記の軸受24と付勢手段27
によって、弁体23は回転子に固着された弁軸13の回転力
を受けることなく真っすぐに押しさげられ、弁体23が弁
座22に当接した時に、弁軸のおねじ13bと推進軸受14の
めねじが食い込むのを防止できる。[Operation] The motor-operated valve of the present invention is a bearing 24 (bearing) provided with an inner peripheral ring 24a and an outer peripheral ring 24b using a cylindrical fixing screw 25 provided with a screw on the outer peripheral portion on the inner surface of the valve body 24. Fixed,
The valve body 23 is urged by the urging means 27 so that the valve body 23 is pushed down so as to come into contact with the valve seat 22 regardless of the vertical movement accompanying the rotation of the valve shaft 13 at all times. Means 27
The valve body 23 is pushed straight without receiving the rotational force of the valve shaft 13 fixed to the rotor, and when the valve body 23 contacts the valve seat 22, the male thread 13b of the valve shaft and the propulsion bearing It is possible to prevent the 14 female screws from biting.
また、上述した電動弁においては、室II28に位置する
弁体23の外周部に小径部を設けると共に弁体23の外径寸
法φd2を前記本体IIの弁座の内径d1と同一寸法のとする
均圧部23aを設けることにより、流体の圧力P1,P2による
弁体23へ作用する上下方向の力が相殺し合う。これを理
論的に説明すると、室II28の弁体23の小径部に作用する
圧力は、側方の出入口パイプ17の圧力P1と等しくなり、
ここで、 出入口パイプ17の圧力をP1（＝室１の圧力） 出入口パイプ18の圧力をP2（＝室２の圧力） 弁座22径d1 弁体23の均圧部23a径d2 とすると、 室II内において弁体に作用する上向きの力 室II内において弁体に作用する下向きの力 が作用し、また、下方の出入口パイプ18から弁体23に作
用する力P2は、弁体の穴23bおよび軸受24を通り室I21へ
連通しているから、室I21の圧力がP2となり、 弁体の下部において弁体に作用する上向きの力 室Ｉ内において弁体に作用する下向きの力 とする。弁体23に作用する力Ｆをまとめると（上向きに
作用する力をプラス、下向きに作用する力をマイナスと
する。） となる。上式において、弁座22径d1と弁体23の均圧部23
a径（d2）が同径により d1＝d2となる。Further, in the electrically operated valve described above, a small diameter portion is provided on the outer peripheral portion of the valve body 23 located in the chamber II28, and the outer diameter dimension φd2 of the valve body 23 is the same as the inner diameter d1 of the valve seat of the main body II. By providing the pressure equalizing portion 23a, the vertical forces acting on the valve body 23 due to the fluid pressures P 1 and P 2 cancel each other out. To explain this theoretically, the pressure acting on the small diameter part of the valve body 23 of the chamber II 28 becomes equal to the pressure P 1 of the side entrance / exit pipe 17,
Here, assuming that the pressure of the inlet / outlet pipe 17 is P 1 (= pressure in the chamber 1) and the pressure in the inlet / outlet pipe 18 is P 2 (= pressure in the chamber 2) valve seat 22 diameter d1 equalizing portion 23a diameter d2 of the valve body 23 , Upward force acting on valve body in chamber II Downward force acting on the valve body in chamber II Also, the force P 2 acting on the valve body 23 from the lower inlet / outlet pipe 18 is communicated with the chamber I21 through the hole 23b of the valve body and the bearing 24, so that the pressure of the chamber I21 becomes P 2 . , Upward force acting on the valve at the bottom of the valve Downward force acting on the valve body in chamber I And The forces F acting on the valve element 23 are summarized (the force acting upward is positive and the force acting downward is negative). Becomes In the above formula, the valve seat 22 diameter d1 and the pressure equalizing portion 23 of the valve body 23
Since the a diameter (d2) is the same, d1 = d2.
よってＦ＝０となる。Therefore, F = 0.
従って、モータ出力は、シールガイド20内のシール材20
aと弁体23の摺動抵抗よりやや大きな力でよいこととな
る。Therefore, the motor output is equal to the sealing material 20 in the sealing guide 20.
A force slightly larger than the sliding resistance between a and the valve body 23 will suffice.
［実施例］ 以下、本考案の電動弁の具体的な実施例を第１図を参
照しつつ詳細に説明する。[Embodiment] Hereinafter, a specific embodiment of the motor-operated valve of the present invention will be described in detail with reference to FIG.
電気駆動機構15は、コイル37への通電によりケース29
内のロータ30を回転させるようになっている。尚、ロー
タの左右方向への回転数を制御させるための調節ナット
31は、ロータ30に植設されたピン32と蓋33から下方に垂
下して設けた調節ボルト34により上下方向へ動くように
なっている。前記ロータ30に固着された弁軸13は、上方
より電気的駆動機構15のロータ30に接続する嵌着部13a
とおねじ13bとシャフト部13cと下端のおねじ13dとによ
り形成されている。The electric drive mechanism 15 is provided with a case 29 by energizing the coil 37.
The inner rotor 30 is adapted to rotate. An adjustment nut for controlling the number of rotations of the rotor in the left-right direction.
The pin 31 is vertically movable by a pin 32 planted in the rotor 30 and an adjusting bolt 34 hanging downward from a lid 33. The valve shaft 13 fixed to the rotor 30 has a fitting portion 13a connected to the rotor 30 of the electric drive mechanism 15 from above.
And an external thread 13b, a shaft portion 13c, and an external thread 13d at the lower end.
本体I16は、上方中心部にめねじを形成してこの部分を
推進軸受14とすると共に、下部を開口して弁体23の上部
が挿入される室I21を形成している。本体II19は、側部
と下部にそれぞれ出入口パイプ17、18を設けると共に出
入口パイプ17につながる部分に室II28が形成され、ま
た、弁座22の径φd1を後述する弁体の均圧部の外径と同
じ寸法に形成されている。The main body I16 has a female thread formed in the upper center part to form the propulsion bearing 14, and the lower part is opened to form a chamber I21 into which the upper part of the valve body 23 is inserted. The main body II19 is provided with inlet / outlet pipes 17 and 18 on the side and the lower portion, respectively, and a chamber II28 is formed in a portion connected to the inlet / outlet pipe 17, and the diameter φd1 of the valve seat 22 is set outside the pressure equalizing portion of the valve body described later. It has the same dimensions as the diameter.
そして、前記本体I16と本体II19はシール材20aを備えた
シールガイド20を介してかしめにより結合されている。The main body I16 and the main body II19 are joined by caulking via a seal guide 20 having a sealing material 20a.
弁体23は、外側部中央を小径部にして上下に摺動可能で
あり、該弁体の外径部を前記弁座の内径d1と同じ寸法に
なるように径をφd2とし、且つ室II28に位置する弁体23
の外周部を小径部にして均圧部23aを形成すると共に中
心部には穴23bが形成され、また弁座22に当接する部分
の下方には出入口パイプ17、18を連通させるための開口
23cが形成されている。The valve body 23 is slidable up and down with the center of the outer part being a small diameter part, and the diameter is φd2 so that the outer diameter part of the valve body has the same size as the inner diameter d1 of the valve seat, and the chamber II28 Valve body located at 23
An outer peripheral portion of the valve has a small diameter portion to form a pressure equalizing portion 23a, a hole 23b is formed in the center portion, and an opening for communicating the inlet and outlet pipes 17 and 18 is formed below the portion abutting the valve seat 22.
23c is formed.
そして、この弁体23は前記シールガイド20内の四フッ化
エチレン樹脂製のシール材20aにより、前記室I21内に上
下に摺動可能に装着されている。The valve body 23 is vertically slidably mounted in the chamber I21 by a sealing material 20a made of tetrafluoroethylene resin in the seal guide 20.
また、前記該弁体23の中心部には穴23が設けられ、該
穴23の中程には外周リング24aと内周リング24bを備えた
軸受24が装着されている。A hole 23 is provided at the center of the valve body 23, and a bearing 24 having an outer peripheral ring 24a and an inner peripheral ring 24b is mounted in the middle of the hole 23.
そして、弁体23内面のめねじに、外周におねじを設けた
筒状の固定ねじ25がねじ込まれて前記軸受24のは弁体23
に固定される。Then, a cylindrical fixing screw 25 provided with a screw on the outer circumference is screwed into the female thread on the inner surface of the valve body 23, and the valve body 23 of the bearing 24 is closed.
Fixed to.
また、前記内周リング24bには弁軸のシャフト部13cが挿
入されており、該シャフト部下方のおねじ13dには調節
ねじ26がねじ止めされ、この調節ねじ26の上面にて軸受
24を支持できるようになっている。また、前記弁軸13の
おねじ13b下端部と軸受24の上面との間には付勢手段27
が取り付けられている。A shaft portion 13c of the valve shaft is inserted into the inner peripheral ring 24b, and an adjusting screw 26 is screwed to a male screw 13d below the shaft portion.
24 can be supported. A biasing means 27 is provided between the lower end of the male screw 13b of the valve shaft 13 and the upper surface of the bearing 24.
Is attached.
次に作動について説明する。 Next, the operation will be described.
弁軸13が推進軸受14のめねじと螺合して下方向に移動
する時には、その動力は弁軸13から付勢手段27、軸受24
を経て弁体23に伝達され、また、上方向に移動する時に
は、その動力は調節ねじ26から軸受24を経て弁体23に伝
達され、弁座22と弁体23の下部側方に設けられた開口23
cの面積Ｓを変化させ流量制御を行う。（図２参照） つまり、弁体23は、回転子に固着された弁軸13と一体的
に回転するのでなく、軸受24（ベアリング）を使用して
いるから、開弁時には弁軸の下端部にねじ止めされた調
節ねじ26により軸受24を介して弁体23が持ち上げられ、
弁体23は直進運動のみ行ない真っすぐに上方向に摺動で
きるようになっており、また、閉弁時には付勢手段27と
軸受24によって弁軸13の回転運動を伝えることなく、真
っすぐに押し下げられるため、弁体23が弁座22に当接し
た時に、弁軸のおねじ13bと推進軸受14のめねじが食い
込みにくくなっている。When the valve shaft 13 is screwed into the female screw of the propulsion bearing 14 and moves downward, the power is transmitted from the valve shaft 13 to the urging means 27 and the bearing 24.
Is transmitted to the valve body 23 via the control screw 26, and when moving upward, its power is transmitted from the adjusting screw 26 to the valve body 23 via the bearing 24, and is provided on the valve seat 22 and the lower side of the valve body 23. Opened 23
The flow rate is controlled by changing the area S of c. That is, since the valve element 23 does not rotate integrally with the valve shaft 13 fixed to the rotor but uses the bearing 24 (bearing), the lower end portion of the valve shaft is opened when the valve is opened. The valve element 23 is lifted via the bearing 24 by the adjusting screw 26 screwed to the
The valve body 23 is configured to perform only a linear motion and to be able to slide straight upward, and when the valve is closed, the biasing means 27 and the bearing 24 can push the valve body 13 straight down without transmitting the rotational motion of the valve shaft 13. Therefore, when the valve body 23 comes into contact with the valve seat 22, it is difficult for the male thread 13b of the valve shaft and the female thread of the propulsion bearing 14 to bite.
なお、上記実施例では、電気的駆動機構15としてモー
タを用いた例を示したが、これは電磁式としてもよい。In addition, in the above-described embodiment, an example in which a motor is used as the electric drive mechanism 15 is shown, but this may be an electromagnetic type.
又弁体23の形状は、弁体の均圧部23a径φd2と弁座22の
径d1が同一寸法に形成されていれば、第３図に示すよう
に中心に穴23bを設けたテーパー状35のものでもよい。Further, the shape of the valve body 23 is a tapered shape in which a hole 23b is provided at the center as shown in FIG. 3 if the pressure equalizing portion 23a diameter φd2 of the valve body and the diameter d1 of the valve seat 22 are formed to have the same size. It can be 35.
［効果］ 以上の説明の如く、本考案の電動弁においては、弁体
23が、回転子に固着された弁軸13と一体的に回転するの
でなく、弁体23の下方への押し下げは、付勢手段27と内
周リングと外周リングを備えた軸受24（ベアリング）に
より行われるものであるから、弁体23が回転することな
く弁座を閉塞できるため、閉弁時に弁軸のおねじ13bと
推進軸受14のめねじが食い込むことがないので電動弁を
小形化することができる。[Effect] As described above, in the motor-operated valve of the present invention, the valve body
23 does not rotate integrally with the valve shaft 13 fixed to the rotor, but the downward pressing of the valve element 23 is performed by the bearing 24 (bearing) including the urging means 27 and the inner and outer rings. Since the valve seat can be closed without rotating the valve body 23, the male screw of the valve shaft 13b and the female screw of the propulsion bearing 14 do not bite when the valve is closed. can do.
また、上記の電動弁において、弁体の均圧部23a径φd
2と弁座22の径d1を同一寸法に形成することにより、流
体の圧力により弁体23の上下方向に作用する力が、互い
に相殺するようにしてあるので、従来のように大きな動
力を必要としないから減速ギヤを用いなくてもよく、消
費電力の少ない安価な電動弁が提供できるという実用効
果の高いものである。In the above electric valve, the pressure equalizing portion 23a of the valve body has a diameter φd.
2 and the valve seat 22 have the same diameter d1 so that the forces acting in the vertical direction of the valve body 23 due to the pressure of the fluid cancel each other out. Therefore, it is not necessary to use a reduction gear, and an inexpensive motorized valve with low power consumption can be provided, which is highly practical.
第１図は本考案の電動弁の閉弁状態を示す縦断側面図。
第２図は第１図の流量制御部分を示す拡大斜視図。第３
図は他実施例の流量制御部分を示す拡大斜視図。第４図
は、従来の電動弁の閉弁状態を示す縦断側面図。 13は弁軸、13aは嵌着部、13bはおねじ、13cはシャフト
部、13dはおねじ、14は推進軸受、15は電気的駆動機
構、16は本体Ｉ、17。18は出入口パイプ、19は本体II、
20はシールガイド、21は室１、22は弁座、23は弁体、23
aは均圧部、23bは穴、23Cは開口、24は軸受、24a外周リ
ング、24bは内周リング、25は固定ねじ、26は調節ね
じ、27は付勢手段、28は室２、29はケース、30はロー
タ、31は調節ナット、32はピン、33は蓋、34は調節ボル
ト。FIG. 1 is a vertical cross-sectional side view showing a closed state of an electric valve of the present invention.
FIG. 2 is an enlarged perspective view showing the flow rate control portion of FIG. Third
The figure is an enlarged perspective view showing a flow rate control portion of another embodiment. FIG. 4 is a vertical cross-sectional side view showing a closed state of a conventional electric valve. 13 is a valve shaft, 13a is a fitting portion, 13b is a male screw, 13c is a shaft portion, 13d is a male screw, 14 is a propulsion bearing, 15 is an electric drive mechanism, 16 is a main body I, 17 and 18 are inlet and outlet pipes, 19 is Body II,
20 is a seal guide, 21 is a chamber 1, 22 is a valve seat, 23 is a valve body, 23
a is a pressure equalizing part, 23b is a hole, 23C is an opening, 24 is a bearing, 24a is an outer ring, 24b is an inner ring, 25 is a fixing screw, 26 is an adjusting screw, 27 is a biasing means, 28 is a chamber 2, 29. Is a case, 30 is a rotor, 31 is an adjusting nut, 32 is a pin, 33 is a lid, and 34 is an adjusting bolt.
Claims (1)
部13cと下端のおねじ13dに形成した弁軸13を電気的駆動
機構により回転させ、この回転をめねじを切った推進軸
受14により直進回転運動に変換する電動弁であって、上
部を電気的駆動機構15に接続した本体I16と、出入口パ
イプ17、18を有する本体II19とをシールガイド20を介し
て適宜な手段で結合し、前記本体I16の中心部に室I21を
形成すると共に出入口パイプ17につながる本体II19の下
方に室II28を形成し、前記室I21内には圧力P1の出入口
パイプ17につながる室II28に位置する弁体23の外周部を
小径部にして上下に摺動可能で径を前記本体IIの弁座の
内径d1と同一寸法のφd2とする均圧部23aを設けた弁体2
3を装着し、該弁体23のの中心部には穴23を設けると共
に該穴23の中程に軸受24を装着し、該軸受24を外周部に
おねじを設けた筒状の固定ねじ25により前記軸受24を弁
体23に固着すると共に内周リング24bの内面には前記弁
軸13下端のシャフト13cを内挿し、前記弁軸13のおねじ1
3bと軸受24の上面との間に付勢手段27を配置すると共に
シャフト下端のおねじ13dに調節ねじ26をねじ込み該調
節ねじ26の上端部が前記軸受24の内周リング24bに当接
するごとく固着し、弁体の穴23bと室I21とを連通させ、
閉弁時には付勢手段27および軸受24を介して弁体23を回
動させることなく真っすぐに押し下げ、開弁時には調節
ねじ26にて弁体23に固着された軸受24を持ち上げるよう
にして閉弁時に弁軸のおねじ13bと推進軸受14のめねじ
が食い込むのを防止するようにしたことを特徴とする電
動弁の構造。1. A propulsion bearing 14 in which a valve shaft 13 formed on a fitting portion 13a, a male screw 13b, a shaft portion 13c and a lower male screw 13d from above is rotated by an electric drive mechanism, and this rotation is cut with a female screw. A main body I16 having an upper part connected to an electric drive mechanism 15 and a main body II19 having inlet / outlet pipes 17 and 18 are connected by a suitable means via a seal guide 20. , A chamber I21 is formed in the center of the main body I16 and a chamber II28 is formed below the main body II19 connected to the inlet / outlet pipe 17, and a valve located in the chamber II28 connected to the inlet / outlet pipe 17 of the pressure P1 is formed in the chamber I21. A valve body 2 provided with a pressure equalizing portion 23a which is slidable vertically with the outer peripheral portion of the body 23 being a small diameter portion and has a diameter of φd2 which is the same size as the inner diameter d1 of the valve seat of the main body II.
3 is installed, a hole 23 is provided in the center of the valve body 23, a bearing 24 is installed in the middle of the hole 23, and a cylindrical fixing screw provided with a screw on the outer periphery of the bearing 24. The bearing 24 is fixed to the valve body 23 by 25, and the shaft 13c at the lower end of the valve shaft 13 is inserted into the inner surface of the inner peripheral ring 24b.
The biasing means 27 is arranged between the 3b and the upper surface of the bearing 24, and the adjusting screw 26 is screwed into the male screw 13d at the lower end of the shaft so that the upper end of the adjusting screw 26 abuts on the inner ring 24b of the bearing 24. It adheres and connects the hole 23b of the valve body and the chamber I21,
When the valve is closed, the valve body 23 is pushed straight down through the biasing means 27 and the bearing 24 without rotating, and when the valve is opened, the bearing 24 fixed to the valve body 23 is lifted by the adjusting screw 26 to close the valve. A motor-operated valve structure characterized in that the male screw 13b of the valve shaft and the female screw of the propulsion bearing 14 are prevented from biting at times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987153758U JPH083789Y2 (en) | 1987-10-07 | 1987-10-07 | Motorized valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987153758U JPH083789Y2 (en) | 1987-10-07 | 1987-10-07 | Motorized valve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6457471U JPS6457471U (en) | 1989-04-10 |
| JPH083789Y2 true JPH083789Y2 (en) | 1996-01-31 |
Family
ID=31429880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987153758U Expired - Lifetime JPH083789Y2 (en) | 1987-10-07 | 1987-10-07 | Motorized valve structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083789Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868289B (en) * | 2012-12-11 | 2016-08-31 | 浙江三花股份有限公司 | Electric expansion valve |
| WO2014089953A1 (en) | 2012-12-11 | 2014-06-19 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103867732B (en) * | 2012-12-11 | 2017-02-15 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| CN104613185B (en) * | 2013-11-01 | 2018-04-13 | 浙江三花制冷集团有限公司 | Electric expansion valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58191377A (en) * | 1982-04-30 | 1983-11-08 | Taiheiyo Kogyo Kk | Flow path selector valve |
| JPS6243276U (en) * | 1985-08-31 | 1987-03-16 |
-
1987
- 1987-10-07 JP JP1987153758U patent/JPH083789Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6457471U (en) | 1989-04-10 |
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