JPS6014679A - Method of detecting valve position of motor driven valve and stopping thereof - Google Patents
Method of detecting valve position of motor driven valve and stopping thereofInfo
- Publication number
- JPS6014679A JPS6014679A JP12191883A JP12191883A JPS6014679A JP S6014679 A JPS6014679 A JP S6014679A JP 12191883 A JP12191883 A JP 12191883A JP 12191883 A JP12191883 A JP 12191883A JP S6014679 A JPS6014679 A JP S6014679A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- phase
- valve
- magnetic
- rotor
- 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
- 238000000034 method Methods 0.000 title claims description 5
- 239000004020 conductor Substances 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000005405 multipole Effects 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 2
- 238000013459 approach Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 2
- 235000006693 Cassia laevigata Nutrition 0.000 description 1
- 241000735631 Senna pendula Species 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229940124513 senna glycoside Drugs 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はモータの回転運動を弁軸の直進運動に変換して
流量を制御する電動弁について、ねじ部にしめつけ摩擦
力が発生する前にあらかじめ設定された弁軸位置で正確
に弁軸の直進運動いいかえるとモータの回転を停止させ
る制御方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric valve that controls the flow rate by converting the rotational motion of a motor into a linear motion of the valve shaft, and the valve shaft position is adjusted to a preset valve shaft position before tightening and frictional force is generated on the threaded portion. This relates to a control method that accurately moves the valve stem in a straight line, or in other words, stops the rotation of the motor.
従来の電動弁においては、モータの回転を機械的に停止
させる構造を弁内に内蔵しており、その−例を第１図に
よって説明すると、弁軸■を弁座■側から弁部■、おね
じ■、外周多極着磁された円筒形の永久磁石からなるモ
ータの回転子■および軸受端■の順に一体化して形成し
、おねじ■は弁本体■に固定され中心にめねじ■を切っ
た推進軸受■とはめあわされ、軸受端■は、非磁性体か
らなるケース［相］内に固定された軸受■とはめあわさ
れている。In conventional electric valves, a structure for mechanically stopping the rotation of the motor is built into the valve, and an example of this is explained with reference to FIG. 1. The male screw ■, the rotor of the motor consisting of a cylindrical permanent magnet with multi-pole magnetization on the outer periphery, and the bearing end ■ are integrated in this order, and the male screw ■ is fixed to the valve body ■, and the female screw ■ is in the center. It is fitted with a propulsion bearing (■) which has been cut, and the bearing end (■) is fitted with a bearing (■) fixed in a case (phase) made of a non-magnetic material.
ケース［相］には、モータの回転子■に対応する位置に
モータの固定子コイル＠が固定されてｂる。ケース［相
］は流体の出入口＠［相］と弁座■を有する弁本体■に
プラズマ溶接などによシ気密的に一体化されている。さ
らに、弁軸■上にはおねじ■の両端部よシ少し離れて止
めビン［相］［相］を圧入などの方法で固定するととも
に、この止めビン０［相］の回転を制限する丸形ビン状
のストッパー■を推進軸受■に貫通して固定していた。The stator coil of the motor is fixed to the case [phase] at a position corresponding to the rotor of the motor. The case [phase] is hermetically integrated with the valve body ■ having a fluid inlet/outlet @ [phase] and a valve seat ■ by plasma welding or the like. Furthermore, on the valve stem ■, a stopper [phase] [phase] is fixed a little apart from both ends of the male screw ■ by a method such as press-fitting, and a round shape is installed to restrict the rotation of this stopper [phase]. A bottle-shaped stopper ■ was fixed through the propulsion bearing ■.
以上のごとく構成されているためモータの固定子コイル
ＯＫ所定量の通電をすると回転子■が回転し、おねじ■
とめねじ■のねじ作用によ多弁軸■は回転しながら前方
（閉弁方向）あるいは後方（開弁方向）に移動し、あら
かじめ設定された弁軸位置（この位置は、たとえば閉弁
方向においては弁部■が弁座■に着座して閉弁し、ねじ
部■■に強いねじつけ摩擦力が発生し、次の開弁運動が
不能になるといったことを避けるよう、弁部■と弁座０
間にきわめてわずかな隙間があるように設定される）で
止めビン［相］あるいは０とストッパＯが接触して弁軸
の直進運動が停止させられる。止めビン［相］は閉弁方
向運動を停止、止めビン［相］は開弁方向運動を停止す
るときにはたらくものである。With the above structure, the stator coil of the motor is OK.When a predetermined amount of electricity is applied, the rotor rotates, and the male screw
Due to the screw action of the female screw ■, the multi-valve shaft ■ moves forward (in the valve-closing direction) or backward (in the valve-opening direction) while rotating, and moves to a preset valve shaft position (this position is, for example, in the valve-closing direction). The valve part ■ and the valve seat are designed to avoid a situation where the valve part ■ seats on the valve seat ■ and closes, creating a strong screwing friction force on the threaded part ■■, making the next valve opening movement impossible. 0
The stop pin [phase] or 0 and the stopper O come into contact with each other at a very small gap (set so that there is a very small gap between them), and the linear movement of the valve stem is stopped. The stop pin [phase] works when stopping the movement in the valve closing direction, and the stop pin [phase] works when stopping the movement in the valve opening direction.
ここで、ビン状のストッパＯは第２図のように推進軸受
０面上に等角度で複数個うがった固定穴０のうちの１ケ
所に選択的に挿入することによって、ねじピッチＰ内で
の軸方向の止め位置バラツキを少なくするよう調整され
ている。Here, the bottle-shaped stopper O is inserted selectively into one of the fixing holes 0 formed at equal angles on the propulsion bearing 0 surface as shown in Fig. It is adjusted to reduce the variation in the stop position in the axial direction.
以上のように構成された従来の電動弁では機械的にモー
タの回転運動を停止させる方法であるため、弁の停止機
能としては確実なものであるが、次のような欠点を有し
ていた。Conventional electric valves configured as described above mechanically stop the rotational movement of the motor, which provides a reliable valve stop function, but they have the following drawbacks: .
（１） 止めビン［相］［相］とストッパ［相］が衝撃
的に当たることによって騒音が発生する。(1) Noise is generated when the stopper [phase] hits the stopper [phase] with an impact.
とくに本電動弁を低騒音が厳しく要求されるルームエア
コンやガス燃焼器具などの家庭用機器に適用しようとす
る場合に問題となるものである。This is particularly a problem when applying this electric valve to household appliances such as room air conditioners and gas combustion appliances that require strict low noise levels.
（２）止めビン［相］［相］とストッパ＠の部品加工精
度、組付精度釦高いレベルが要求されしたがって高価と
なる。(2) A high level of precision is required for the processing of the parts of the locking pin [phase] [phase] and the stopper@, and the assembly precision button is therefore expensive.
本発明は前記のような欠点を解決するためのものであシ
、くわしくはモータの回転子■が永久磁石製であること
と、この回転子■と弁軸■とが一体になって回転をとも
なう直進運動することを利用して弁軸■の軸方向位置を
磁気的に検出し、所定位置に達した際モータの回転を停
止させようとするものである。The present invention is intended to solve the above-mentioned drawbacks, and in detail, the rotor (■) of the motor is made of a permanent magnet, and the rotor (■) and the valve stem (■) are integrally rotated. The axial position of the valve stem (1) is magnetically detected by utilizing the accompanying linear movement, and the rotation of the motor is stopped when a predetermined position is reached.
以下、本発明の電動弁の構成例を第８図により詳細に説
明する。Hereinafter, a configuration example of the electric valve of the present invention will be explained in detail with reference to FIG. 8.
本発明は、非磁性体からなるケース［相］の外周部で、
モータの回転子■に対応する位置に固定されたモータの
固定子コイ〃＠の前後あるいはどちらか一方のケース上
にモータの回転子■の磁力を検出する磁気センサ［相］
を固定し、この磁気センサ［相］の出力をモータの駆動
回路（図示せず）に入力させ、ある一定収上のセンナ出
力となった時にモータの回転を停止させるようにしたも
のである。In the present invention, in the outer peripheral part of the case [phase] made of non-magnetic material,
A magnetic sensor [phase] that detects the magnetic force of the motor rotor ■ is placed on the front and back of the motor stator coil @, or on either case, which is fixed at a position corresponding to the motor rotor ■.
is fixed, the output of this magnetic sensor [phase] is input to a motor drive circuit (not shown), and the rotation of the motor is stopped when the senna output reaches a certain level.
本発明においてはモータの回転子■は外周に多極着磁さ
れた円筒形の永久磁石からなシ、その長さＩはモータの
固定子コイル＠の巾Ｗよシ長く構成される。In the present invention, the rotor (2) of the motor is composed of a cylindrical permanent magnet whose outer periphery is magnetized with multiple poles, and its length I is longer than the width W of the stator coil (2) of the motor.
したがってモータの回転子■と一体的に形成され、おね
じ■を有する弁軸■の弁座■に対する位置が全閉あるい
は全開の位置となるとモータの回転子■はモータの固定
子コイＡ／＠内からΔ＝１−ｗだけ突出されるよう構成
される。Therefore, when the valve stem ■, which is formed integrally with the motor rotor ■ and has a male thread ■, is in the fully closed or fully open position with respect to the valve seat ■, the motor rotor ■ will be moved to the motor stator coil A/@ It is configured to protrude from the inside by Δ=1−w.
本発明は以上のように構成されるため、弁軸■が全閉あ
るいは全開位置に達していないときにはモータの回転子
■の磁力は磁気センナ［相］に作用せず、モータは固定
子コイ１Ｌ１０への通電量（ステフビングモータの時に
はパルス数、インダクタ形交流同期モータの時はサイク
ル数）に比例して回転する。Since the present invention is constructed as described above, when the valve stem (■) has not reached the fully closed or fully open position, the magnetic force of the motor's rotor (■) does not act on the magnetic sensor [phase], and the motor operates as the stator coil (1L10). The motor rotates in proportion to the amount of current applied to it (the number of pulses in the case of a stepping motor, the number of cycles in the case of an inductor type AC synchronous motor).
弁軸■が全閉あるいは全開位置に近くなってぐると、モ
ータの回転子■の片側端面はモータの固定子コイル＠内
から次第に抜は出て、磁気センサ［株］に近づき、磁気
センサ［相］はモータの回転子■の磁力を検出するよう
になる。その検出量があらかじめ弁軸■の全閉、全開位
置と関連づけられた量に達するとモータの駆動回路から
モータ停止の信号が出され、モータ回転停止−弁軸■の
直進運動が停止する。When the valve stem ■ approaches the fully closed or fully open position, one end face of the motor rotor ■ gradually comes out from inside the motor's stator coil @, approaches the magnetic sensor [Co., Ltd.], and the magnetic sensor [ [phase] begins to detect the magnetic force of the motor's rotor (■). When the detected amount reaches an amount previously associated with the fully closed and fully open positions of the valve stem (2), a signal to stop the motor is issued from the motor drive circuit, and the motor rotation is stopped - the linear motion of the valve stem (2) is stopped.
本発明による磁気センサ［相］としては第４図〜第６図
に示すものが一例として考えられる。この磁気センサは
、軟磁性の板材料からなり、その形状としては、磁極［
相］をケース［相］の外径と同じ円周上にモータの回転
子■の極数の％の数だけ等分に配置し、各磁極［相］の
一端を円環状のヨーク［相］で一体的に構成することに
よって磁気回路を形成させ、磁極Ｏ外周上に電気導線［
相］を巻くとともに、この電気導線［相］の両端を開放
したものである。As the magnetic sensor [phase] according to the present invention, those shown in FIGS. 4 to 6 can be considered as examples. This magnetic sensor is made of a soft magnetic plate material, and its shape has magnetic poles [
The magnetic poles [phase] are arranged equally on the same circumference as the outer diameter of the case [phase] in a number equal to % of the number of poles of the motor's rotor ■, and one end of each magnetic pole [phase] is connected to an annular yoke [phase]. A magnetic circuit is formed by integrally configuring the magnetic pole O, and an electric conductor [
The electrical conductor wire [phase] is wound and both ends of the electrical conductor [phase] are left open.
第６図は上記した本発明の磁気センサ［相］を電動弁に
装着した例を示すものであシ、弁軸■がほぼ全閉の位置
に達した時の状態であるが、磁気センサ［株］はモータ
の固定子コイル＠と同様、ケース［相］上に挿入、固定
されている。Fig. 6 shows an example in which the magnetic sensor [phase] of the present invention described above is attached to an electric valve. The stator coil is inserted and fixed onto the case [phase] in the same way as the stator coil of the motor.
磁力の検出状態を第６図で説明すると、第６図では磁極
＠はモータの回転子■のＮ極と対応しているため、磁極
［相］、ヨーク［相］はＳ極になるよう帯磁され、磁気
回路を形成している。この状態から、モータの回転子■
か右あるいは左方向に回転すると磁極［相］は、これま
でと反対のＳ極続いてＮ、Ｓ、・・、と互いに反対の永
久磁石の磁力と対応することになるため電気導線［相］
Ｋ誘導電圧（電流）が発生する。To explain the detection state of magnetic force using Fig. 6, in Fig. 6, the magnetic pole @ corresponds to the N pole of the motor rotor ■, so the magnetic pole [phase] and yoke [phase] are magnetized so that they become S poles. and form a magnetic circuit. From this state, the motor rotor ■
When rotating to the right or left, the magnetic poles [phases] correspond to the magnetic forces of the opposite permanent magnets, such as the opposite S pole, then N, S, etc., so the electric conductor [phase]
K induced voltage (current) is generated.
この時の誘導電圧（電流）は磁気センサ［相］の磁極［
相］の下に、モータの回転子■が有るときと無いときで
は大きく異なることから、モータの回転子■の軸方向位
置すなわち弁軸■の全閉、全開を判別できるものである
。The induced voltage (current) at this time is the magnetic pole [phase] of the magnetic sensor [phase].
Since there is a large difference between when the motor rotor (2) is present and when there is no motor rotor (2) under the [phase], it is possible to determine the axial position of the motor rotor (2), that is, whether the valve stem (2) is fully closed or fully open.
本発明では以上のように、外周多極着磁され、かつモー
タの固定子コイル０の巾Ｗより長い円筒形の磁石からな
るモータの回転子■の°磁力を、簡単な構成の磁気セン
サ［相］によって検出する仁とに ＠磁・よって、回転
子■と一体化された弁軸■の軸方向位置を判別する構成
のため、従来の電動弁のような止めビン０［相］や、ス
トッパ＠が不要となシ問題となっていた機械的な衝撃当
たり音は完全になくなる実用上きわめて有益な発明であ
る。As described above, in the present invention, the magnetic force of the motor rotor ■, which is composed of a cylindrical magnet whose outer periphery is multi-pole magnetized and whose width W is longer than the width W of the motor's stator coil 0, is detected by a magnetic sensor [ Therefore, due to the configuration that determines the axial position of the valve stem (■) integrated with the rotor (■), it is difficult to detect the stop pin 0 (phase) like a conventional motor-operated valve. This is an extremely useful invention in practice, as there is no need for a stopper and the problem of mechanical impact noise is completely eliminated.
第１図は従来の電動弁の一構成例を示す縦断側面図、第
２図は従来の推進軸受の斜視図、第８図は本発明に係る
電動弁の一構成例を示す縦断側面図、第４図は本発明の
磁気センサの磁極構成を示す斜視図、第５図は本発明の
磁気センサを装着し九−例を示す電動弁の部分縦断側面
図、第６図は第６図の１−１断面図。
■弁軸 ■弁座 ■弁部 ■おねじ
■モータの回転子 ■軸受端 ■弁本体■めねじ ■推
進軸受 ［相］ケース
■軸受＠モータの固定子コイル
［相］［相］流体の出入口 ［相］［相］止めビン＠ス
トッパ ［相］固定大 ［株］磁気センサ極 ［相］ヨ
ーク ［相］電気導線
特許出願人
太平洋工業株式会社
葛３１図
第４図FIG. 1 is a longitudinal sectional side view showing an example of the configuration of a conventional electric valve, FIG. 2 is a perspective view of a conventional propulsion bearing, and FIG. 8 is a longitudinal sectional side view showing an example of the configuration of an electric valve according to the present invention. FIG. 4 is a perspective view showing the magnetic pole configuration of the magnetic sensor of the present invention, FIG. 5 is a partial longitudinal sectional side view of an electric valve equipped with the magnetic sensor of the present invention and showing an example, and FIG. 6 is the same as that shown in FIG. 1-1 sectional view. ■Valve shaft ■Valve seat ■Valve part ■Male thread ■Motor rotor ■Bearing end ■Valve body ■Female thread ■Propulsion bearing [Phase] Case ■Bearing @ motor stator coil [Phase] [Phase] Fluid inlet/outlet [Phase] [Phase] Locking bottle @ stopper [Phase] Fixed size [Co., Ltd.] Magnetic sensor pole [Phase] Yoke [Phase] Electric conductor patent applicant Taiheiyo Kogyo Co., Ltd. Figure 31 Figure 4
Claims (1)
モータの固定子コイル＠への通電によシ、ケース［相］
内に収納したおねじ■を有する弁軸■と一体的に形成し
たモータの回転子■を回転させ、この回転をめねじ■を
切りた推進軸受■によ多弁軸■の直進運動に変換するこ
とによって弁座■の開口度を制御する電動弁において、
モータの回転子■を外周多極着磁した永久磁石製の円筒
形になすとともに、モータの固定子コイル＠の幅よルも
モータの回転子■の幅を大きく形成し、モータの固定子
コイル［相］の前後あるいはどちらか一方のケース上に
、モータの回転子■の磁力を検出する磁気センサ［株］
を固定し、この磁気センサ［株］の出力が所定量以上に
なった際にモータの回転を停止させるようにしたことを
特徴とする電動弁の弁位置検出・停止方法。 ２）磁気センサ［株］が、軟磁性の材料からなる磁極［
相］をケース［相］の外径と同じ円周上にモータの回転
子■の極数の％の数だけ等分に配置し、各磁極［相］の
一端側を円環状のヨーク０により磁気的に一体となすよ
う連結し、磁極Ｏ外周上に電気導線［相］を巻くととも
に、仁の電気導線［相］の両端を開放し、この両端にあ
られれる誘導電圧（電流）を出力とする磁気センサ［相
］を用いたことを特徴とする電動弁の弁位置検出・停止
方法。[Claims] 1) By energizing the stator coil of the motor fixed to the outer periphery of the case [phase] made of a non-magnetic material, the case [phase]
The motor rotor ■, which is integrally formed with the valve shaft ■ with a male thread ■ housed inside, is rotated, and this rotation is converted into linear motion of the multiple valve shaft ■ by the propulsion bearing ■ with a female thread ■. In motor-operated valves that control the opening degree of the valve seat by
The rotor of the motor is made into a cylindrical shape made of a permanent magnet with multi-pole magnetization on the outer periphery, and the width of the stator coil of the motor is also made larger than the width of the motor's rotor. A magnetic sensor [Co., Ltd.] that detects the magnetic force of the rotor of the motor is installed before and after the [phase] or on either case.
A method for detecting and stopping a valve position of an electric valve, characterized in that the rotation of the motor is stopped when the output of the magnetic sensor [Co., Ltd.] exceeds a predetermined amount. 2) The magnetic sensor [Co., Ltd.] has a magnetic pole made of soft magnetic material [
The magnetic poles [phase] are arranged equally on the same circumference as the outer diameter of the case [phase] in a number equal to % of the number of poles of the motor rotor ■, and one end of each magnetic pole [phase] is connected by an annular yoke 0. Connect them so that they are magnetically integrated, wind the electric conductor [phase] on the outer circumference of the magnetic pole O, open both ends of the electric conductor [phase], and output the induced voltage (current) generated at both ends. A method for detecting and stopping a valve position of an electric valve, characterized by using a magnetic sensor [phase].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12191883A JPS6014679A (en) | 1983-07-04 | 1983-07-04 | Method of detecting valve position of motor driven valve and stopping thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12191883A JPS6014679A (en) | 1983-07-04 | 1983-07-04 | Method of detecting valve position of motor driven valve and stopping thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6014679A true JPS6014679A (en) | 1985-01-25 |
| JPH0337671B2 JPH0337671B2 (en) | 1991-06-06 |
Family
ID=14823130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12191883A Granted JPS6014679A (en) | 1983-07-04 | 1983-07-04 | Method of detecting valve position of motor driven valve and stopping thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6014679A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62104910U (en) * | 1985-12-23 | 1987-07-04 | ||
| FR2762909A1 (en) * | 1997-04-30 | 1998-11-06 | Samson Ag | DIFFERENTIAL PRESSURE MEASURING APPARATUS |
| JP2001012633A (en) * | 1999-06-29 | 2001-01-16 | Fuji Koki Corp | Device for detecting valve opening of motor-driven valve and device for controlling opening of motor-driven valve |
| US6661125B2 (en) | 2000-03-02 | 2003-12-09 | Shinano Electronics Co., Ltd. | Linear motor |
| US6703726B2 (en) | 2000-05-12 | 2004-03-09 | Shinano Electronics Co., Ltd. | Platen for flat linear motor |
-
1983
- 1983-07-04 JP JP12191883A patent/JPS6014679A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62104910U (en) * | 1985-12-23 | 1987-07-04 | ||
| FR2762909A1 (en) * | 1997-04-30 | 1998-11-06 | Samson Ag | DIFFERENTIAL PRESSURE MEASURING APPARATUS |
| JP2001012633A (en) * | 1999-06-29 | 2001-01-16 | Fuji Koki Corp | Device for detecting valve opening of motor-driven valve and device for controlling opening of motor-driven valve |
| US6661125B2 (en) | 2000-03-02 | 2003-12-09 | Shinano Electronics Co., Ltd. | Linear motor |
| US6703726B2 (en) | 2000-05-12 | 2004-03-09 | Shinano Electronics Co., Ltd. | Platen for flat linear motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0337671B2 (en) | 1991-06-06 |
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