JP2011252600A - Motor-operated valve with reducer - Google Patents

Motor-operated valve with reducer Download PDF

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JP2011252600A
JP2011252600A JP2011169188A JP2011169188A JP2011252600A JP 2011252600 A JP2011252600 A JP 2011252600A JP 2011169188 A JP2011169188 A JP 2011169188A JP 2011169188 A JP2011169188 A JP 2011169188A JP 2011252600 A JP2011252600 A JP 2011252600A
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valve
rotor
gear
motor
male screw
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Yusuke Arai
裕介 荒井
Hidekazu Sasada
英一 笹田
Tomoari Ouchi
共存 大内
Hitoshi Umezawa
仁志 梅澤
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Fujikoki Corp
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Fujikoki Corp
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  • Electrically Driven Valve-Operating Means (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized and inexpensive motor-operated valve with large output and high resolution by housing a reducer together with a rotor inside a single can.SOLUTION: A female screw member 420 is fixed to the inside of an upper part of a valve body 10. The member 420 supports a cylindrical member 82 via a rest 80. A male screw member 410 is screwed into the member 420 with a screw part S. A valve rod 400 is insertably/extractably inserted inside the member 410. At the front end of the rod 400, a valve part 402 is formed to be brought into contact with a valve seat 12. An output gear 260 consisting of an output member of the reducer 200 inside the rotor 170 includes an arm-shaped drive part 262 extending to a side of a transmission member 440. The part 262 engages with a groove 442 of the member 440. A torque of the gear 260 is transmitted to the member 440 to rotate the member 410. A rotation of the member 410 is converted to a movement in an axial direction with the screw part Sto lift the rod 400 up/down.

Description

本発明は、減速装置を備えた電動弁に関する。   The present invention relates to an electric valve provided with a reduction gear.

電動モータを介して弁の開閉を行ういわゆる電動弁としては、大きく分けて次の二つのタイプが知られている。第１のタイプは、ロータの回転を直接にねじ機構に伝達して弁の開閉を行うようにしたもので、例えば特許文献１に開示されている。第２のタイプは、ロータの回転を減速装置で減速してねじ機構に伝達する減速装置を備えたもので、例えば特許文献２や特許文献３等に開示されている。   The so-called electric valves that open and close the valve via an electric motor are roughly classified into the following two types. The first type is one in which the rotation of the rotor is directly transmitted to the screw mechanism to open and close the valve, and is disclosed in Patent Document 1, for example. The second type includes a reduction device that reduces the rotation of the rotor with a reduction device and transmits the rotation to the screw mechanism, and is disclosed in, for example, Patent Literature 2 and Patent Literature 3.

特開２０００−３５６２７８号公報JP 2000-356278 A 特開２００２−８４７３２号公報JP 2002-84732 A 特開２００３−２３２４６５号公報JP 2003-232465 A

前記第１のタイプの電動弁は、比較的コンパクトに構成できるものの、用途が低負荷の場合に限られ、また１駆動パルス当たりの弁開度の分解能を高くすることは困難である不都合を有している。
前記第２のタイプの電動弁は、負荷が大きい場合にも使用でき、１駆動パルス当たりの弁開度の分解能を高くすることはできるが、減速装置のためのギヤボックスがモータ部分と別個に構成されるために電動弁全体が大型化してしまう問題を有している。 Although the first type motor-operated valve can be configured relatively compactly, it has a disadvantage that it is limited to the case where the application is low load, and it is difficult to increase the resolution of the valve opening per drive pulse. is doing.
The electric valve of the second type can be used even when the load is large, and the resolution of the valve opening per driving pulse can be increased. However, the gear box for the speed reducer is separated from the motor portion. Due to the configuration, there is a problem that the entire motor-operated valve is enlarged.

そこで、本発明の目的は、減速装置を備えた電動弁において、キャンの内部にロータと一緒に減速装置をも配置して、小型でかつ強力な弁操作力と高分解能の弁開度特性を得ることができる減速装置付電動弁を提供するものである。   Accordingly, an object of the present invention is to provide a motor-operated valve equipped with a speed reduction device by arranging the speed reduction device together with the rotor inside the can so that a small and powerful valve operating force and a high-resolution valve opening characteristic are obtained. An electric valve with a speed reducer that can be obtained is provided.

上記目的を達成するために、本発明の減速装置付電動弁は、基本的手段として、弁室及び弁座を有する弁本体と、前記弁室内で前記弁座の開口を開閉可能に配置される弁部を有する弁棒と、前記弁本体に固着される円筒状のキャンと、該キャンの外周部に装着されるモータ励磁装置と、前記キャンの内周部に回転自在に支持され前記励磁装置によって回転駆動される永久磁石型ロータと、該ロータの内部に配設されてロータの回転を減速する遊星歯車式減速装置を備える。そして、前記ロータの内部空間に配設される前記遊星歯車式減速装置の出力ギヤと、出力ギヤにより駆動される雄ねじ部材と、弁本体の上部に固着されて雄ねじ部材と螺合する雌ねじ部材と、雄ねじ部材の内部に挿入される弁棒と、雄ねじ部材と弁棒の間に配設されて弁棒を前記弁座に向けて付勢するコイルスプリングを備えるものである。   In order to achieve the above object, a motor-operated valve with a speed reducer according to the present invention is arranged as a basic means such that a valve body having a valve chamber and a valve seat, and an opening of the valve seat can be opened and closed in the valve chamber. A valve stem having a valve portion, a cylindrical can fixed to the valve body, a motor excitation device mounted on the outer periphery of the can, and the excitation device rotatably supported on the inner periphery of the can And a planetary gear type speed reducer that is disposed inside the rotor and decelerates the rotation of the rotor. An output gear of the planetary gear type reduction gear disposed in the inner space of the rotor; a male screw member driven by the output gear; And a valve rod inserted into the male screw member, and a coil spring disposed between the male screw member and the valve rod to urge the valve rod toward the valve seat.

本発明の電動弁は、以上のように、減速装置をロータと一緒にキャン内に収容するので、小型で大出力・高分解能の電動弁を低価格で提供することができる。   As described above, the motor-operated valve of the present invention accommodates the speed reducer together with the rotor in the can, so that it is possible to provide a motorized valve with a small size, high output and high resolution at a low price.

本発明が適用されるベースとなる減速装置付電動弁の構成を示す説明図。Explanatory drawing which shows the structure of the motor operated valve with a reduction gear used as the base to which this invention is applied. 本発明が適用されるベースとなる減速装置付電動弁に装備される減速装置の説明図。Explanatory drawing of the speed reducer with which the motorized valve with a speed reducer used as the base to which this invention is applied is equipped. 減速装置の構成部品を示す説明図。Explanatory drawing which shows the component of a reduction gear. 減速装置の構成部品を示す説明図。Explanatory drawing which shows the component of a reduction gear. 減速装置の構成部品を示す説明図。Explanatory drawing which shows the component of a reduction gear. 本発明の実施例の電動弁の構成を示す説明図。Explanatory drawing which shows the structure of the motor operated valve of the Example of this invention.

図１に示すように、本発明が適用されるベースとなる減速装置付電動弁は、弁座１２と弁室１４を有する弁本体１０を備える。弁室１４内には弁体３０が配置され、弁座１２に対して離接する。弁室１４に連通する２本の配管２０、２２が弁本体１０に取り付けられる。   As shown in FIG. 1, the motor-driven valve with a speed reducer serving as a base to which the present invention is applied includes a valve body 10 having a valve seat 12 and a valve chamber 14. A valve body 30 is disposed in the valve chamber 14 and is in contact with the valve seat 12. Two pipes 20, 22 communicating with the valve chamber 14 are attached to the valve body 10.

弁本体３０には弁棒３２が連結される。弁本体１０の上部の開口部には、リング部材３８が載置され、この実施例では、一例としてカシメ加工部Ｋ１により固定されている。リング部材３８の固定は、はんだ付けにより封止固定されることもある。リング部材３８と弁棒３２との間には、ベローズ４０が設けられ、冷媒の浸入をシールする。弁棒３２の上端部には、ボール３６の受け部材３４が挿入固定される。 A valve rod 32 is connected to the valve body 30. The upper opening portion of the valve body 10, the ring member 38 is placed, in this embodiment, it is fixed by caulking portion K 1 as an example. The ring member 38 may be fixedly sealed by soldering. A bellows 40 is provided between the ring member 38 and the valve stem 32 to seal the intrusion of the refrigerant. A receiving member 34 of a ball 36 is inserted and fixed to the upper end portion of the valve rod 32.

ボール３６の上部には、ねじ軸３２０が当接され、ねじ機構により軸方向の推力を弁棒３２側へ伝達する。   A screw shaft 320 is in contact with the upper portion of the ball 36, and axial thrust is transmitted to the valve stem 32 side by a screw mechanism.

弁本体１０の上端の外周部には、弁本体の一部を構成するフランジ部材７０が溶接等の手段により固定され、これによって外気と遮断し、ガスや水分等の浸入を防止している。このフランジ部材７０の上部には受け部材８０が固着される。受け部材８０の外周側には、円筒部材８２が取付けられ、受け部材８０の内周側には、雌ねじ部材９０が取付けられる。   A flange member 70 constituting a part of the valve main body is fixed to the outer peripheral portion of the upper end of the valve main body 10 by means of welding or the like, thereby blocking the outside air and preventing intrusion of gas, moisture and the like. A receiving member 80 is fixed to the upper portion of the flange member 70. A cylindrical member 82 is attached to the outer peripheral side of the receiving member 80, and a female screw member 90 is attached to the inner peripheral side of the receiving member 80.

一方、フランジ部材７０の上部には、キャンと称する非磁性の金属材で作られる円筒形状のキャン１００が、溶接等で固着される。キャン１００の外側には、駆動モータの一例としてのステッピングモータ用の励磁装置Ｍが取り付けられる。   On the other hand, a cylindrical can 100 made of a nonmagnetic metal material called a can is fixed to the upper portion of the flange member 70 by welding or the like. An excitation device M for a stepping motor as an example of a drive motor is attached to the outside of the can 100.

この励磁装置Ｍは、樹脂モールド１２０と、その内に装備されるボビン１３０に巻き付けたコイル１４０と、このコイルへの通電によって励磁されるステータＳを有し、コイル１４０はリード１４２を介して給電される。
この励磁装置Ｍは、下部に取付用金具１８０を有し、この取付用金具１８０の穴１８２をキャン１００に形成した突起１０２に係合することにより、着脱自在にキャン１００に装着される。 The excitation device M includes a resin mold 120, a coil 140 wound around a bobbin 130 provided therein, and a stator S excited by energization of the coil. The coil 140 is fed via a lead 142. Is done.
The exciter M has a mounting bracket 180 in the lower portion, and is detachably mounted on the can 100 by engaging a hole 182 of the mounting bracket 180 with a protrusion 102 formed on the can 100.

キャン１００の頂部には、円筒状の突部１０４が形成され、この突部１０４の内部に支持部材１５０が圧入固定される。この支持部材１５０は固定シャフト１５２を支持する。
キャン１００の内部には、ステッピングモータの永久磁石型ロータ１７０が回転自在に配設される。ロータ１７０は永久磁石材料で円筒状に作られ、樹脂等で作られる回転部材１６０と一体に形成される。回転部材１６０の回転力は、全体を符号２００で示す減速装置に伝達される。 A cylindrical protrusion 104 is formed on the top of the can 100, and the support member 150 is press-fitted and fixed inside the protrusion 104. The support member 150 supports the fixed shaft 152.
A permanent magnet type rotor 170 of a stepping motor is rotatably disposed inside the can 100. The rotor 170 is made of a permanent magnet material in a cylindrical shape, and is formed integrally with a rotating member 160 made of resin or the like. The rotational force of the rotating member 160 is transmitted to the speed reduction device denoted as a whole by reference numeral 200.

図２乃至図５は、ロータ内部に組込まれる減速装置２００の説明図である。
減速装置２００は、この実施例では、遊星歯車機構を利用して大きな減速比を実現している。 2 to 5 are explanatory views of the reduction gear device 200 incorporated in the rotor.
In this embodiment, the reduction device 200 uses a planetary gear mechanism to achieve a large reduction ratio.

この減速装置２００は、シャフト２１０を介して、図１に示すロータ１７０と一体の回転部材１６０と一体に形成されるサンギヤ２２０を有する。サンギヤ２２０はプラネタリギヤ２３０に噛み合い、プラネタリギヤ２３０はキャリアによって支持される。   This reduction device 200 has a sun gear 220 formed integrally with a rotating member 160 integral with a rotor 170 shown in FIG. The sun gear 220 meshes with the planetary gear 230, and the planetary gear 230 is supported by the carrier.

本装置にあっては、キャリアは１対の円盤２４０，２４２と、２枚の円盤２４０，２４２を連結する軸２３２により構成され、３個のプラネタリギヤ２３０はキャリアに対して回転自在に取付けられる。   In this apparatus, the carrier is constituted by a pair of disks 240 and 242, and a shaft 232 connecting the two disks 240 and 242, and the three planetary gears 230 are rotatably attached to the carrier.

図４に示すように、キャリア２４０は、３本の支柱２４４を有し、プレート２４２により３つのプラネタリギヤ２３０の軸２３２を支持するとともに、プレート２４２はビス等で支柱２４４に固定される。   As shown in FIG. 4, the carrier 240 has three support columns 244, and the plates 242 support the shafts 232 of the three planetary gears 230, and the plate 242 is fixed to the support columns 244 with screws or the like.

このキャリア全体は、後述する出力ギヤ２６０上で自由に回転できるように支持されている。プラネタリギヤ２３０は、リング状の固定ギヤ２５０と出力ギヤ２６０に同時に噛み合っている。固定ギヤ２５０は、弁本体１０側に固定された円筒部材８２の内側に固定される。出力ギヤ２６０は、固定ギヤ２５０とは異なる数の内歯を有し、受け部材８０上に回転摺動自在に支持されていて、下面側にドライバー３００が突出して備わっている。   The entire carrier is supported so as to freely rotate on an output gear 260 described later. Planetary gear 230 meshes with ring-shaped fixed gear 250 and output gear 260 simultaneously. The fixed gear 250 is fixed inside the cylindrical member 82 fixed to the valve body 10 side. The output gear 260 has a different number of internal teeth than the fixed gear 250, is supported on the receiving member 80 so as to be freely slidable, and has a driver 300 protruding from the lower surface side.

ドライバー３００は、マイナスドライバー形状の駆動部３１０を有し、ねじ軸３２０に挿入される。ねじ軸３２０の回転は、軸方向の移動に変換され、ボール３６を介して弁棒３２側へ伝達される。
ロータ側の回転部材１６０と減速装置側の固定ギヤ２５０との間に皿ばね１９０を介在させて回転部材１６０（サンギヤ２２０）を支持部材１５０側へ付勢している。 The driver 300 includes a minus driver-shaped drive unit 310 and is inserted into the screw shaft 320. The rotation of the screw shaft 320 is converted into an axial movement and transmitted to the valve stem 32 via the ball 36.
A disc spring 190 is interposed between the rotor-side rotation member 160 and the reduction gear-side fixed gear 250 to urge the rotation member 160 (sun gear 220) toward the support member 150.

この減速装置２００にあって、出力ギヤ２６０の歯数が固定ギヤ２５０の歯数より多い場合は、ロータ１７０と一体に回転するサンギヤ２２０が時計廻り（ＣＷ）に回転すると、プラネタリギヤ２３０は反時計廻り（ＣＣＷ）に回転する。キャリア２４０は減速されて時計廻り（ＣＷ）に回転する。出力ギヤ２６０は、時計廻り（ＣＷ）に回転する。
逆に出力ギヤ２６０の歯数が固定ギヤ２５０の歯数より少ない場合は、サンギヤ２２０が時計廻り（ＣＷ）に回転すると、出力ギヤ２６０は反時計廻り（ＣＣＷ）に回転する。
この遊星歯車式減速装置にあっては、サンギヤ２２０、プラネタリギヤ２３０、固定ギヤ２５０、出力ギヤ２６０の歯数をそれぞれＺａ，Ｚｂ，Ｚｃ，Ｚｆとしたとき、出力ギヤ２６０の出力ギヤ比は次式で表される。
（Ｚａ・Ｚｆ−Ｚａ・Ｚｃ）／［Ｚｆ・（Ｚａ＋Ｚｃ）］
ただし、 Ｚｆ≠Ｚｃ
因みに、Ｚａ＝１２、Ｚｂ＝１８、Ｚｃ＝４８、Ｚｆ＝５４としたとき、出力ギヤ２６０の出力ギヤ比は、１／４５の大きな減速比となる。
ロータの回転は大きな減速比でねじ軸３２０に伝達されるので、微小に、つまりは高分解能をもって弁開度を制御することが可能となる。 When the number of teeth of the output gear 260 is greater than the number of teeth of the fixed gear 250 in this reduction gear 200, the planetary gear 230 is counterclockwise when the sun gear 220 that rotates integrally with the rotor 170 rotates clockwise (CW). Rotate around (CCW). The carrier 240 is decelerated and rotates clockwise (CW). The output gear 260 rotates clockwise (CW).
Conversely, when the number of teeth of the output gear 260 is smaller than the number of teeth of the fixed gear 250, when the sun gear 220 rotates clockwise (CW), the output gear 260 rotates counterclockwise (CCW).
In this planetary gear type reduction gear, when the number of teeth of the sun gear 220, the planetary gear 230, the fixed gear 250, and the output gear 260 is Z a , Z b , Z c , Z f , respectively, the output gear of the output gear 260 The ratio is expressed by the following equation.
(Z a · Z f −Z a · Z c ) / [Z f · (Z a + Z c )]
However, Z f ≠ Z c
Incidentally, when Z a = 12, Z b = 18, Z c = 48, and Z f = 54, the output gear ratio of the output gear 260 becomes a large reduction ratio of 1/45.
Since the rotation of the rotor is transmitted to the screw shaft 320 with a large reduction ratio, the valve opening degree can be controlled minutely, that is, with high resolution.

ロータ１７０とロータ１７０の回転を減速する減速装置２００は、単一のキャン１００内に封入されるので、外気や水分等の浸入を完全に防ぐことができる。このため、内部の結露等の発生もなく、厳しい環境下でも確実な流量制御を行うことができる。   Since the rotor 170 and the speed reducer 200 that decelerates the rotation of the rotor 170 are enclosed in the single can 100, it is possible to completely prevent the intrusion of outside air, moisture, and the like. For this reason, there is no generation | occurrence | production of internal dew condensation etc., and reliable flow control can be performed even in a severe environment.

図６は、本発明の実施態様に係る電動弁の構成を示す説明図である。
この電動弁にあっても、弁本体の構成やキャン１００の外側に駆動モータの一例であるステッピングモータの励磁装置Ｍを着脱自在に装着する構成と、ステッピングモータのロータの内部に減速装置を組込む構成は、先に説明した電動弁と同様であるので、同一の符号を付して詳細な説明は省略する。 FIG. 6 is an explanatory diagram showing the configuration of the motor-operated valve according to the embodiment of the present invention.
Even in this electric valve, the structure of the valve main body, the structure in which the excitation device M of the stepping motor, which is an example of the drive motor, is detachably mounted on the outside of the can 100, and the speed reducer is incorporated in the rotor of the stepping motor. Since the configuration is the same as that of the motor-operated valve described above, the same reference numerals are given and detailed description is omitted.

この電動弁にあっては、弁本体１０の上部の外側にフランジ部材７０Ａが固着され、フランジ部材７０Ａはキャン１００を支持する。
弁本体１０の上部の内側に雌ねじ部材４２０が固着され、雌ねじ部材４２０は、受け部材８０を介して円筒部材８２を支持する。 In this electric valve, the flange member 70 </ b> A is fixed to the outside of the upper portion of the valve body 10, and the flange member 70 </ b> A supports the can 100.
A female screw member 420 is fixed inside the upper portion of the valve body 10, and the female screw member 420 supports the cylindrical member 82 via the receiving member 80.

雌ねじ部材４２０にねじ部Ｓ１で螺合される雄ねじ部材４１０は、内部に弁棒４００が挿動自在に挿入される。弁棒４００の先端には弁部４０２が形成され、弁座１２に当接する。
弁棒４００は、コイルスプリング４３０とプレート４３２を介して雄ねじ部材４１０内に挿入される。雄ねじ部材４１０の外側には、樹脂製の伝動部材４４０が一体に成型される。この伝動部材４４０は、雄ねじ部材の軸線に平行な溝４４２が形成される。 Externally threaded member 410 is screwed into the female screw member 420 by the screw portion S 1 is the valve stem 400 therein is inserted freely挿動. A valve portion 402 is formed at the tip of the valve stem 400 and contacts the valve seat 12.
The valve stem 400 is inserted into the male screw member 410 via the coil spring 430 and the plate 432. A resin transmission member 440 is integrally formed outside the male screw member 410. The transmission member 440 has a groove 442 that is parallel to the axis of the male screw member.

一方、ロータ１７０の内側に装備される減速装置２００の出力部材である出力ギヤ２６０は、伝動部材４４０側へ伸びるアーム状の駆動部２６２を有する。この駆動部２６２は、伝動部材４４０の溝４４２に係合する。
この構成により、出力ギヤ２６０の回転力は、伝動部材４４０に伝動され、雄ねじ部材４１０は回転駆動される。雄ねじ部材４１０の回転は、ねじ部Ｓ１で軸方向の移動に変換され、弁棒４００を上下動させる。 On the other hand, an output gear 260 that is an output member of the reduction gear device 200 provided inside the rotor 170 has an arm-shaped drive unit 262 that extends toward the transmission member 440 side. The drive unit 262 engages with the groove 442 of the transmission member 440.
With this configuration, the rotational force of the output gear 260 is transmitted to the transmission member 440, and the male screw member 410 is rotationally driven. Rotation of the externally threaded member 410 is converted into movement in the axial direction by the screw portion S 1, vertically moving the valve stem 400.

ステッピングモータにより駆動されるロータ１７０の回転量は、大きな減速比で減速され、弁棒４００を駆動する。そこで、小型で小トルクのステッピングモータを使用して大容量・高分解能の電動弁を構成することが低価格で可能となる。   The rotation amount of the rotor 170 driven by the stepping motor is decelerated at a large reduction ratio, and drives the valve stem 400. Therefore, it is possible to construct a motorized valve with a large capacity and a high resolution by using a small stepping motor with a small torque at a low price.

なお、以上の実施例にあっては、いずれも遊星歯車を利用した減速装置の例を説明したが、複数の平歯車群からなる多段の歯車列を用いた歯車減速装置に置き換えることもできる。
また、いずれの実施例においても、減速装置をロータ１７０の内部に収容した例を示したが、減速装置をロータの下方に配置するように構成することも可能である。 In each of the above embodiments, examples of the speed reducer using planetary gears have been described. However, a gear speed reducer using a multistage gear train composed of a plurality of spur gear groups may be used.
In any of the embodiments, the example in which the speed reduction device is accommodated in the rotor 170 has been shown. However, the speed reduction device may be arranged below the rotor.

また、ねじ機構を構成するねじのピッチを選択したり、弁座に対向する弁体の先端形状を変更することにより、ロータの回転に対する弁の流量制御特性を任意に設定することができる。
したがって、ユーザの要求等を満足する弁特性を備えた電動弁を容易に提供することができる。 Further, the flow rate control characteristic of the valve with respect to the rotation of the rotor can be arbitrarily set by selecting the pitch of the screws constituting the screw mechanism or changing the tip shape of the valve body facing the valve seat.
Therefore, it is possible to easily provide a motor-operated valve having a valve characteristic that satisfies a user's request and the like.

１ 電動弁
１０ 弁本体
１２ 弁座
１４ 弁室
３０ 弁体
３２ 弁棒
４０ ベローズ
７０ フランジ部材
８０ 受け部材
１００ キャン
Ｍ モータ励磁装置
Ｓ ステータ
１４０ コイル
１７０ ロータ
２００ 減速装置
２２０ サンギヤ
２３０ プラネタリギヤ
２４０ キャリア
２５０ 固定ギヤ
２６０ 出力ギヤ DESCRIPTION OF SYMBOLS 1 Motorized valve 10 Valve body 12 Valve seat 14 Valve chamber 30 Valve body 32 Valve rod 40 Bellows 70 Flange member 80 Receiving member 100 Can M Motor excitation device S Stator 140 Coil 170 Rotor 200 Reduction gear device 220 Sun gear 230 Planetary gear 240 Carrier 250 Fixed gear 260 Output gear

Claims (1)

弁室及び弁座を有する弁本体と、前記弁室内で前記弁座の開口を開閉可能に配置される弁部を有する弁棒と、前記弁本体に固着される円筒状のキャンと、該キャンの外周部に装着されるモータ励磁装置と、前記キャンの内周部に回転自在に支持され前記励磁装置によって回転駆動される永久磁石型ロータと、該ロータの内部に配設されてロータの回転を減速する遊星歯車式減速装置とを備え、
前記ロータの内部空間に配設される前記遊星歯車式減速装置の出力ギヤと、出力ギヤにより駆動される雄ねじ部材と、弁本体の上部に固着されて雄ねじ部材と螺合する雌ねじ部材と、雄ねじ部材の内部に挿入される弁棒と、雄ねじ部材と弁棒の間に配設されて弁棒を前記弁座に向けて付勢するコイルスプリングを備えることを特徴とする減速装置付電動弁。 A valve body having a valve chamber and a valve seat, a valve rod having a valve portion disposed so that an opening of the valve seat can be opened and closed in the valve chamber, a cylindrical can fixed to the valve body, and the can A motor excitation device mounted on the outer peripheral portion of the motor, a permanent magnet type rotor rotatably supported on the inner peripheral portion of the can, and a rotation of the rotor disposed inside the rotor. A planetary gear speed reducer that decelerates
An output gear of the planetary gear type reduction gear disposed in the inner space of the rotor, a male screw member driven by the output gear, a female screw member fixed to the upper part of the valve body and screwed with the male screw member, and a male screw An electric valve with a speed reducer, comprising: a valve rod inserted into the member; and a coil spring disposed between the male screw member and the valve rod to urge the valve rod toward the valve seat.
JP2011169188A 2011-08-02 2011-08-02 Motor-operated valve with reducer Pending JP2011252600A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018126023A (en) * 2017-02-03 2018-08-09 アズビル株式会社 Actuator
CN111911282A (en) * 2020-08-18 2020-11-10 吉林大学 Electric control valve system for two-stage turbocharger of engine and control method
US20220252312A1 (en) * 2019-08-08 2022-08-11 Eagle Industry Co., Ltd. Expansion valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174130A (en) * 1992-11-30 1994-06-24 Fuji Koki Seisakusho:Kk Electric flow control valve
JP2001295957A (en) * 2000-04-14 2001-10-26 Sharp Corp Expansion valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174130A (en) * 1992-11-30 1994-06-24 Fuji Koki Seisakusho:Kk Electric flow control valve
JP2001295957A (en) * 2000-04-14 2001-10-26 Sharp Corp Expansion valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018126023A (en) * 2017-02-03 2018-08-09 アズビル株式会社 Actuator
US20220252312A1 (en) * 2019-08-08 2022-08-11 Eagle Industry Co., Ltd. Expansion valve
CN111911282A (en) * 2020-08-18 2020-11-10 吉林大学 Electric control valve system for two-stage turbocharger of engine and control method

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