JP2023155781A - Motor valve - Google Patents

Motor valve Download PDF

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Publication number
JP2023155781A
JP2023155781A JP2022065323A JP2022065323A JP2023155781A JP 2023155781 A JP2023155781 A JP 2023155781A JP 2022065323 A JP2022065323 A JP 2022065323A JP 2022065323 A JP2022065323 A JP 2022065323A JP 2023155781 A JP2023155781 A JP 2023155781A
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Japan
Prior art keywords
valve
valve body
valve seat
opening
seat member
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JP2022065323A
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Japanese (ja)
Inventor
祐介 湊
Yusuke Minato
沙弥佳 藤井
Sayaka Fujii
勇斗 新谷
Yuto Shinya
秀 柳澤
Hide Yanagisawa
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Fujikoki Corp
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Fujikoki Corp
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Priority to JP2022065323A priority Critical patent/JP2023155781A/en
Priority to CN202310298355.2A priority patent/CN116892644A/en
Publication of JP2023155781A publication Critical patent/JP2023155781A/en
Pending legal-status Critical Current

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    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

To provide a motor valve which makes foreign objects less likely to be caught between a valve body and a valve seat.SOLUTION: A motor valve includes a valve body, a valve element which is moved in an axial direction by a driving force of a motor; and a valve seat unit. The valve seat unit has: a valve seat member including a valve seat, on which the valve body is seated, and held in a manner that the valve seat member may move at least in the axial direction relative to the valve body; and an elastic body which is disposed between the valve seat member and the valve body and may elastically deform.SELECTED DRAWING: Figure 1

Description

本発明は、電動弁に関する。 The present invention relates to an electric valve.

従来から、電動弁は、例えば流体の配管系統の途中に組み付けられて、流体の流路の開閉や流量制御を行うために使用されている（特許文献１参照）。このような電動弁においては、弁本体に装着されたステッピングモータにより弁体を開閉することで、精度良い流量制御と閉弁時の密封性を実現している。 Conventionally, electric valves have been installed, for example, in the middle of a fluid piping system and used to open/close a fluid flow path and control the flow rate (see Patent Document 1). In such electric valves, a stepping motor attached to the valve body opens and closes the valve body, thereby achieving accurate flow control and sealing when the valve is closed.

特開２０１９－１４３７０４号公報Japanese Patent Application Publication No. 2019-143704

冷凍サイクルの経路内を流れる流体（冷媒）中には、比較的硬度の高い異物（金属粉、削りカス、研磨材、スラッジ等）が含まれている。その異物の多くは経路内に設けたストレーナ等により捕獲されるが、微小な異物の一部は、流体とともに電動弁内に進入し開弁時に弁体と弁座の間を通過することとなる。 The fluid (refrigerant) flowing through the path of the refrigeration cycle contains relatively hard foreign substances (metal powder, shavings, abrasives, sludge, etc.). Most of the foreign matter is captured by strainers installed in the path, but some of the tiny foreign matter enters the motor-operated valve along with the fluid and passes between the valve body and valve seat when the valve is opened. .

このような異物が弁体と弁座の間を通過する際に閉弁動作が行われると、異物が弁体と弁座との間に挟み込まれ（異物噛み込みという）て弁座や弁体が変形し、それにより弁体が完全に閉弁位置にあるときでも流体漏れが生じるおそれがある。 If a valve closing operation is performed while such a foreign object passes between the valve element and the valve seat, the foreign object may become caught between the valve element and the valve seat (hereinafter referred to as "foreign object entrapment"), causing damage to the valve seat or the valve seat. deformation, which may cause fluid leakage even when the valve body is in the fully closed position.

特に、高い減速比を持つギヤ式の減速機構を備えた電動弁では、ステッピングモータの回転数を減速して弁体の軸線方向移動に変換しているため、閉弁時における弁体と弁座との面圧が過大となる。したがって、弁体と弁座との間に異物が噛み込まれると、弁体または弁座に強く押し付けられ、それにより弁座や弁体の当接面に傷、打痕等の凹部が生じるため、流体漏れがさらに生じやすくなるという傾向がある。 In particular, in electric valves equipped with a gear-type reduction mechanism with a high reduction ratio, the rotation speed of the stepping motor is reduced and converted into axial movement of the valve body, so the valve body and valve seat when the valve is closed are The surface pressure between the two ends becomes excessive. Therefore, if a foreign object gets caught between the valve body and the valve seat, it will be strongly pressed against the valve body or the valve seat, resulting in scratches, dents, or other recesses on the valve seat or the contact surface of the valve body. , there is a tendency for fluid leakage to occur more easily.

本発明は、かかる課題に鑑みてなされたものであって、弁体と弁座との間で異物噛み込みが生じにくい電動弁を提供することを目的とする。 The present invention has been made in view of such problems, and an object of the present invention is to provide an electrically operated valve that is less likely to cause foreign matter to become caught between the valve body and the valve seat.

本発明の電動弁は、
弁本体と、
モータの駆動力により軸線方向に移動する弁体と、
弁座ユニットと、を有し、
前記弁座ユニットは、前記弁体が着座する弁座を備え、前記弁本体に対して少なくとも前記軸線方向に移動可能に保持された弁座部材、及び前記弁座部材と前記弁本体との間に配置された弾性変形可能な弾性体、を有する、ことを特徴とする。 The electric valve of the present invention is
a valve body;
A valve body that moves in the axial direction by the driving force of the motor,
a valve seat unit;
The valve seat unit includes a valve seat on which the valve body is seated, a valve seat member held movably in at least the axial direction with respect to the valve body, and a space between the valve seat member and the valve body. It is characterized by having an elastic body disposed in an elastically deformable body.

本発明によれば、弁体と弁座との間で異物噛み込みが生じにくい電動弁を提供することができる。 According to the present invention, it is possible to provide an electrically operated valve in which foreign matter is less likely to get caught between the valve body and the valve seat.

図１は、第１の実施形態に係る電動弁の縦断面図である。FIG. 1 is a longitudinal sectional view of the electric valve according to the first embodiment. 図２は、弁座ユニットの周辺を拡大して示す縦断面図である。FIG. 2 is an enlarged vertical cross-sectional view showing the periphery of the valve seat unit. 図３は、第２の実施形態にかかる弁座ユニットの周辺を拡大して示す縦断面図である。FIG. 3 is an enlarged vertical cross-sectional view showing the periphery of the valve seat unit according to the second embodiment.

以下、本発明に係る電動弁の実施形態を、図面を参照しつつ説明する。なお、本明細書では、ロータ側を上方として説明し、弁体側を下方として説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an electric valve according to the present invention will be described with reference to the drawings. In addition, in this specification, the rotor side will be explained as being above, and the valve body side will be explained as being below.

（第１の実施形態）
図１は、第１の実施形態に係る電動弁１の縦断面図である。本実施形態の電動弁１は、例えば冷凍サイクルにおいて冷媒流量を調整するために用いられる。電動弁１の軸線をＬとする。 (First embodiment)
FIG. 1 is a longitudinal sectional view of an electric valve 1 according to a first embodiment. The electric valve 1 of this embodiment is used, for example, to adjust the flow rate of refrigerant in a refrigeration cycle. Let L be the axis of the electric valve 1.

本実施形態の電動弁１は、弁室ＶＣの内部に形成された弁本体１０と、ベースプレート１１を介して弁本体１０に固着された有頂円筒形状のキャン３と、キャン３に外挿されるステータ５５及びキャン３の内部に装備されるロータ５７からなるステッピングモータ５と、ステータ５５の周囲を覆うカバー９と、ロータ５７の回転トルクを減速して伝達するギヤ式の減速機構６と、弁座部材３１の弁座３１ａに接離して流体の通過量を制御する弁体４と、減速機構６の出力ギヤの回転移動をねじ送り機構２７を介して直線移動に変換して弁体４を駆動するねじ駆動部材（出力軸）２２と、から構成される。なお、キャンは電動弁の弁本体側に内部が密閉されるように取り付けられた筒状部を有する部材（キャン３は有底の筒状部を有する）をいうものとする。 The electric valve 1 of this embodiment includes a valve main body 10 formed inside a valve chamber VC, a can 3 having a cylindrical shape fixed to the valve main body 10 via a base plate 11, and a can 3 that is externally inserted into the can 3. A stepping motor 5 consisting of a stator 55 and a rotor 57 installed inside the can 3, a cover 9 that covers the stator 55, a gear type reduction mechanism 6 that reduces and transmits the rotational torque of the rotor 57, and a valve. The valve body 4 moves into and out of contact with the valve seat 31a of the seat member 31 to control the amount of fluid passing through, and the rotational movement of the output gear of the reduction mechanism 6 is converted into linear movement via the screw feed mechanism 27 to move the valve body 4. It is composed of a screw drive member (output shaft) 22 to be driven. Note that the can is a member having a cylindrical portion attached to the valve body side of the electric valve so that the inside thereof is sealed (the can 3 has a cylindrical portion with a bottom).

ステッピングモータ５は、ヨーク５１、ボビン５２、コイル５３等からなるステータ５５と、キャン３の内部にキャン３に対して回転自在に配置され、ロータ支持部材５６がその上部内側に固着されたロータ５７と、を有している。ステータ５５は、キャン３の外側に嵌合固定され、樹脂製のカバー９により覆われている。 The stepping motor 5 includes a stator 55 consisting of a yoke 51, a bobbin 52, a coil 53, etc., and a rotor 57 that is arranged inside the can 3 so as to be rotatable relative to the can 3 and has a rotor support member 56 fixed to the inside of its upper part. It has . The stator 55 is fitted and fixed to the outside of the can 3 and covered with a cover 9 made of resin.

有底筒状の弁本体１０には、内部の弁室ＶＣに連通する開口が下端に形成されるとともに、その開口側に第１配管Ｔ１がロウ付け等により接続され、また弁室ＶＣの側面に形成された開口１２に連通するように第２配管Ｔ２がロウ付け等により接続されている。第２配管Ｔ２の軸線をＯとする。軸線Ｏは、軸線Ｌと直交する。ここでは、第２配管Ｔ２内の圧力は、第１配管Ｔ１内の圧力よりも高いものとする。 The bottomed cylindrical valve body 10 has an opening communicating with the internal valve chamber VC formed at the lower end, and a first pipe T1 is connected to the opening side by brazing or the like, and the side surface of the valve chamber VC is connected to the first pipe T1 by brazing or the like. A second pipe T2 is connected by brazing or the like so as to communicate with the opening 12 formed in the opening 12 . Let O be the axis of the second pipe T2. The axis O is perpendicular to the axis L. Here, it is assumed that the pressure in the second pipe T2 is higher than the pressure in the first pipe T1.

また、弁本体１０の弁室ＶＣの上部には、中央下端側に雌ねじ部１３ａが形成されたねじ軸受部材１３が嵌挿され、圧入等により弁本体１０に固定されている。 Further, a threaded bearing member 13 having a female threaded portion 13a formed at the lower center end is fitted into the upper part of the valve chamber VC of the valve body 10, and is fixed to the valve body 10 by press fitting or the like.

減速機構６は、ロータ５７の内周側において、ロータ支持部材５６に一体に形成された太陽歯車６１と、弁本体１０の上部に固着された薄肉筒状体６６を介して固定された固定リング歯車６２と、太陽歯車６１と固定リング歯車６２との間に配置されてそれぞれに歯合する遊星歯車６３と、遊星歯車６３を回転自在に支持するキャリア６４と、遊星歯車６３に歯合する歯を内周に備えた有底筒状の出力歯車部材６５とを有し、これらにより不思議遊星歯車減速機構を構成する。固定リング歯車６２の歯数は、出力歯車部材６５の歯数とは異なるように設定されている。 The speed reduction mechanism 6 includes a sun gear 61 formed integrally with the rotor support member 56 and a fixing ring fixed to the inner peripheral side of the rotor 57 via a thin-walled cylindrical body 66 fixed to the upper part of the valve body 10. A gear 62, a planetary gear 63 disposed between the sun gear 61 and the fixed ring gear 62 and meshing with each other, a carrier 64 rotatably supporting the planetary gear 63, and teeth meshing with the planetary gear 63. and a bottomed cylindrical output gear member 65 having an inner periphery thereof, and these constitute a mysterious planetary gear reduction mechanism. The number of teeth of the fixed ring gear 62 is set to be different from the number of teeth of the output gear member 65.

軸部材８は、ロータ支持部材５６及び太陽歯車６１を貫通して、これらを回転可能に保持しており、その軸部材８の上端は、キャン３の頂部内側に配置された支持部材８１により支持されている。 The shaft member 8 passes through the rotor support member 56 and the sun gear 61 and rotatably holds them, and the upper end of the shaft member 8 is supported by the support member 81 disposed inside the top of the can 3. has been done.

出力歯車部材６５の底部中央には、ねじ駆動部材２２の上部に形成された段付き円筒形状の出力軸部２９の上部が圧入され、この出力軸部２９の上部開口には、軸部材８の下端が圧入により嵌合している。 The upper part of the stepped cylindrical output shaft part 29 formed on the upper part of the screw drive member 22 is press-fitted into the center of the bottom of the output gear member 65 , and the upper opening of the output shaft part 29 has the upper part of the shaft member 8 . The lower ends are press-fitted.

ねじ軸受部材１３の雌ねじ部１３ａには、ねじ駆動部材２２の下部に形成された雄ねじ部２２ａが螺合されている。出力歯車部材６５（すなわち、ロータ５７）の回転移動は、雄ねじ部２２ａと雌ねじ部１３ａとからなるねじ送り機構（変換機構）２７により、軸線Ｌに沿って直線移動に変換される。 A male threaded portion 22a formed at the lower part of the screw drive member 22 is screwed into the female threaded portion 13a of the screw bearing member 13. The rotational movement of the output gear member 65 (that is, the rotor 57) is converted into linear movement along the axis L by a screw feeding mechanism (conversion mechanism) 27 consisting of a male threaded portion 22a and a female threaded portion 13a.

出力軸部２９は、ねじ駆動部材２２に一体回転可能に連結され、出力歯車部材６５（ロータ５７）が回転すれば、出力軸部２９とねじ駆動部材２２は一体となって回転するとともに、弁本体１０に対して軸線Ｌに沿って相対的に直線移動する。 The output shaft portion 29 is integrally rotatably connected to the screw drive member 22, and when the output gear member 65 (rotor 57) rotates, the output shaft portion 29 and the screw drive member 22 rotate together, and the valve It linearly moves relative to the main body 10 along the axis L.

ねじ駆動部材２２の直線移動は、ボール２３とボール受座２４とからなるボール状継手２５を介して中間軸７に伝達される。 The linear movement of the screw drive member 22 is transmitted to the intermediate shaft 7 via a ball joint 25 consisting of a ball 23 and a ball seat 24.

円筒状の中間軸７は、中間基部７ａと、中間基部７ａの上端に連設された中間鍔部７ｂとからなる。中間鍔部７ｂの中央に中間孔７ｃが形成され、また中間孔７ｃより大径の拡径開口７ｄが、中間孔７ｃにつながり中間基部７ａの下端に開口するように形成されている。中間孔７ｃには、ボール受座２４の下端が圧入により嵌合している。 The cylindrical intermediate shaft 7 includes an intermediate base 7a and an intermediate collar 7b connected to the upper end of the intermediate base 7a. An intermediate hole 7c is formed in the center of the intermediate collar portion 7b, and an enlarged diameter opening 7d having a larger diameter than the intermediate hole 7c is formed so as to connect to the intermediate hole 7c and open at the lower end of the intermediate base portion 7a. The lower end of the ball seat 24 is press-fitted into the intermediate hole 7c.

円筒状の弁体４は、中間基部７ａと外径が略等しい弁体基部４ａと、弁体基部４ａの上端に連設された弁体小径部４ｂと、弁体基部４ａの下端に連設された弁体大径部４ｃとからなる。弁体小径部４ｂは、拡径開口７ｄに圧入により嵌合している。弁体大径部４ｃの下部に、弁体円錐面４ｄが形成される。 The cylindrical valve body 4 includes a valve body base 4a having an outer diameter approximately equal to that of the intermediate base 7a, a valve body small diameter portion 4b connected to the upper end of the valve body base 4a, and a valve body small diameter portion 4b connected to the lower end of the valve body base 4a. The valve body has a large diameter portion 4c. The small diameter portion 4b of the valve body is press-fitted into the enlarged diameter opening 7d. A valve body conical surface 4d is formed at the lower part of the valve body large diameter portion 4c.

中間軸７及び弁体４の周囲に配置された筒状のばねケース１９は、ケース拡径部１９ａと、ケース縮径部１９ｂと、ケース拡径部１９ａの上端から径方向外側に延在する上端フランジ部１９ｃとを連設してなる。上端フランジ部１９ｃが弁本体１０の内周段部に係合し、ねじ軸受部材１３により固定保持されている。ケース縮径部１９ｂは、弁体基部４ａの外周を摺動可能に保持している。 A cylindrical spring case 19 arranged around the intermediate shaft 7 and the valve body 4 includes an enlarged case diameter portion 19a, a reduced case diameter portion 19b, and extends radially outward from the upper end of the case enlarged diameter portion 19a. The upper end flange portion 19c is connected to the upper end flange portion 19c. The upper end flange portion 19c engages with the inner circumferential stepped portion of the valve body 10 and is fixedly held by the screw bearing member 13. The case reduced diameter portion 19b slidably holds the outer periphery of the valve body base 4a.

圧縮コイルばね２６が、ケース拡径部１９ａとケース縮径部１９ｂの間の段部に下端を当接させ、中間軸７の中間鍔部７ｂに上端を係合させて、圧縮した状態で配置されており、それにより弁体４を常時開弁方向に付勢している。 The compression coil spring 26 is placed in a compressed state with its lower end in contact with the stepped portion between the case enlarged diameter portion 19a and the case reduced diameter portion 19b, and its upper end engaged with the intermediate flange portion 7b of the intermediate shaft 7. As a result, the valve body 4 is always urged in the valve-opening direction.

図２は、弁座ユニット３０の周辺を拡大して示す縦断面図である。弁本体１０は、弁室ＶＣの底面に、円形の第1開口１０ａと、第1開口１０ａより大径の第２開口１０ｂと、第２開口１０ｂより大径の第３開口１０ｃを、この順序で軸線Ｌに同軸に形成している。第1開口１０ａの上端が、環状のストッパ部１０ｄを構成する。また、第1開口１０ａと、第２開口１０ｂと、第３開口１０ｃとにより、弁本体１０の軸線方向下方に開口する環状凹部を形成する。なお、環状凹部が貫通孔である場合、一方側の開口面積（ここでは第３開口１０ｃの断面積）が他方側の開口面積（ここでは第1開口１０ａの断面積）よりも大きいときは、該貫通孔は一方側に向かって「開口している」とみなす。 FIG. 2 is an enlarged vertical cross-sectional view showing the vicinity of the valve seat unit 30. The valve body 10 has a circular first opening 10a, a second opening 10b having a larger diameter than the first opening 10a, and a third opening 10c having a larger diameter than the second opening 10b, in this order, on the bottom surface of the valve chamber VC. It is formed coaxially with the axis L. The upper end of the first opening 10a constitutes an annular stopper portion 10d. Further, the first opening 10a, the second opening 10b, and the third opening 10c form an annular recess that opens downward in the axial direction of the valve body 10. Note that when the annular recess is a through hole, when the opening area on one side (here, the cross-sectional area of the third opening 10c) is larger than the opening area on the other side (here, the cross-sectional area of the first opening 10a), The through hole is considered to be "open" toward one side.

第３開口１０ｃは、下方に突出するカシメ円筒部１０ｅ（点線で図示）の内周により形成される。カシメ円筒部１０ｅの径方向外側に、第１配管Ｔ１を取り付ける取付開口１０ｆが形成されている。 The third opening 10c is formed by the inner periphery of the caulking cylindrical portion 10e (indicated by a dotted line) that projects downward. An attachment opening 10f for attaching the first pipe T1 is formed on the radially outer side of the caulking cylindrical portion 10e.

第２開口１０ｂには、リング状の弁座部材３１と、樹脂またはゴム製のＯ－リング（弾性体）３２が配置されている。弁座部材３１の外径は、第２開口１０ｂの内径よりも所定量小さくなっている。弁座部材３１の内周上端が弁座３１ａを構成する。Ｏ－リング３２は、例えば、ＮＢＲ、Ｈ－ＮＢＲ，ＥＰＤＭ，シリコンゴム，フッ素ゴム，ウレタンゴム等からなり、そのヤング率の範囲は０．１～１０ＭＰａであると好ましい。 A ring-shaped valve seat member 31 and an O-ring (elastic body) 32 made of resin or rubber are arranged in the second opening 10b. The outer diameter of the valve seat member 31 is smaller than the inner diameter of the second opening 10b by a predetermined amount. The upper end of the inner circumference of the valve seat member 31 constitutes the valve seat 31a. The O-ring 32 is made of, for example, NBR, H-NBR, EPDM, silicone rubber, fluororubber, urethane rubber, etc., and preferably has a Young's modulus in the range of 0.1 to 10 MPa.

第３開口１０ｃには、環状部材３３が配置される。環状部材３３の内周近傍の上面が突出して、環状凸部３３ａが形成されている。弁座部材３１と、Ｏ－リング３２と、環状部材３３とにより、弁座ユニット３０を構成する。 An annular member 33 is arranged in the third opening 10c. An upper surface near the inner circumference of the annular member 33 protrudes to form an annular convex portion 33a. The valve seat member 31, the O-ring 32, and the annular member 33 constitute the valve seat unit 30.

弁座ユニット３０の組付時には、弁本体１０の下方側から、カシメ円筒部１０ｅの内側に、弁座部材３１と、Ｏ－リング３２と、環状部材３３を、この順序で挿入し、図２に示すようにカシメ円筒部１０ｅの下端（環状凹部の開口周縁）を内側にカシメ（塑性変形させ）て、環状部材３３の外径よりも縮径させる。これにより、環状部材３３の上面が第１開口１０ａと第２開口１０ｂとの段部に当接して、環状部材３３は弁本体１０に固定されて一体化し、また弁座部材３１とＯ－リング３２の抜け止めが行われる。固定された環状部材３３によりＯ－リング３２を介して、弁座部材３１が上方に付勢され、第１開口１０ａと第２開口１０ｂとの段部に当接して保持される。かかる状態で、弁座部材３１とＯ－リング３２とにより、Ｏ－リング３２は軸線Ｌ方向に圧縮される。環状部材３３の環状凸部３３ａは、Ｏ－リング３２の内周側に当接して、Ｏ－リング３２が脱落することを抑制する。弁座ユニット３０の構成部品は、すべて弁本体１０の下方側から組み付けることができる。 When assembling the valve seat unit 30, the valve seat member 31, O-ring 32, and annular member 33 are inserted in this order into the caulked cylindrical portion 10e from the lower side of the valve body 10, and as shown in FIG. As shown in FIG. 3, the lower end of the caulking cylindrical portion 10e (the opening periphery of the annular recess) is caulked (plastically deformed) inward to make the diameter smaller than the outer diameter of the annular member 33. As a result, the upper surface of the annular member 33 comes into contact with the step between the first opening 10a and the second opening 10b, and the annular member 33 is fixed and integrated with the valve body 10, and the valve seat member 31 and the O-ring No. 32 retaining is performed. The valve seat member 31 is urged upward by the fixed annular member 33 via the O-ring 32, and is held in contact with the step between the first opening 10a and the second opening 10b. In this state, the O-ring 32 is compressed in the direction of the axis L by the valve seat member 31 and the O-ring 32. The annular convex portion 33a of the annular member 33 comes into contact with the inner peripheral side of the O-ring 32, and prevents the O-ring 32 from falling off. All the components of the valve seat unit 30 can be assembled from the lower side of the valve body 10.

（電動弁の動作）
不図示の制御装置から所定パルス数の閉弁制御信号をステータ５５に給電することにより、ステッピングモータ５のロータ５７を一方向に回転駆動させたとき、太陽歯車６１から減速機構６に回転数が入力され、さらに減速機構６により減速された回転数が出力軸部２９を介して、ねじ駆動部材２２に伝達される。ねじ駆動部材２２が一方向に回転すると、雌ねじ部１３ａと雄ねじ部２２ａとが相対螺動し、その回転数に応じて、ねじ駆動部材２２が軸線Ｌ方向下方に移動する。このねじ駆動部材２２の推力により、ボール状継手２５を介して中間軸７が下方に付勢され、中間軸７は圧縮コイルばね２６の付勢力に抗して下降する。 (Operation of electric valve)
When the rotor 57 of the stepping motor 5 is rotated in one direction by supplying power to the stator 55 with a valve closing control signal of a predetermined number of pulses from a control device (not shown), the rotation speed is increased from the sun gear 61 to the reduction mechanism 6. The rotational speed that is input and further reduced by the speed reduction mechanism 6 is transmitted to the screw drive member 22 via the output shaft portion 29 . When the screw drive member 22 rotates in one direction, the female thread part 13a and the male thread part 22a move relative to each other, and the screw drive member 22 moves downward in the direction of the axis L according to the rotation speed. The thrust of the screw driving member 22 urges the intermediate shaft 7 downward via the ball-shaped joint 25, and the intermediate shaft 7 descends against the urging force of the compression coil spring 26.

中間軸７の下降とともに弁体４が下降し、弁体円錐面４ｄが弁座部材３１の弁座３１ａに着座して第２開口１０ｂが閉じられる（図２参照）。これにより弁室ＶＣを挟んで配管Ｔ２、Ｔ１との間で、流体の流れが中断する。 As the intermediate shaft 7 descends, the valve body 4 descends, and the conical surface 4d of the valve body seats on the valve seat 31a of the valve seat member 31, closing the second opening 10b (see FIG. 2). This interrupts the flow of fluid between the pipes T2 and T1 with the valve chamber VC in between.

ここで、不図示の制御装置からステッピングモータ５に入力される閉弁制御信号は、駆動経路のガタなどを考慮して、弁体円錐面４ｄが弁座３１ａに着座したのち、さらに一定角度でロータ５７が回転させる分のパルス数を含む。このため、弁体円錐面４ｄが弁座３１ａに着座したのちも、弁体４はさらに下降し続ける。 Here, the valve closing control signal inputted to the stepping motor 5 from the control device (not shown) is applied at a certain angle after the conical surface 4d of the valve body is seated on the valve seat 31a, taking into consideration play in the drive path. It includes the number of pulses for the rotation of the rotor 57. Therefore, even after the valve body conical surface 4d is seated on the valve seat 31a, the valve body 4 continues to descend further.

仮に弁座３１ａが弁本体１０と一体である場合、当接後においても弁体円錐面４ｄが弁座３１ａに向かって付勢されるため、両者間に高い面圧が作用する。特に、電動弁１がギヤ式の減速機構６を有している場合、弁体円錐面４ｄと弁座３１ａとの面圧は過大となる。かかる状況で、弁体円錐面４ｄと弁座３１ａとの間に硬い異物が介在した場合、弁体円錐面４ｄと弁座３１ａの少なくとも一方に圧痕やキズなど生じるため、これにより閉弁時に流体漏れが生じる恐れがある。 If the valve seat 31a is integral with the valve body 10, the conical surface 4d of the valve body is urged toward the valve seat 31a even after abutment, so that a high surface pressure acts between them. In particular, when the electric valve 1 has the gear type reduction mechanism 6, the surface pressure between the valve body conical surface 4d and the valve seat 31a becomes excessive. In such a situation, if a hard foreign object is interposed between the conical surface 4d of the valve body and the valve seat 31a, an impression or scratch will be generated on at least one of the conical surface 4d of the valve body and the valve seat 31a. There is a risk of leakage.

本実施形態によれば、弁体円錐面４ｄが弁座３１ａに着座したのち、弁体４の下降に応じてＯ－リング３２が弾性変形するため、弁座３１ａは弁体円錐面４ｄに当接したまま下降する。Ｏ－リング３２が弾性変形することにより発生する弾性力は、弁座３１ａと弁体円錐面４ｄとが押圧されるように付勢されるが、かかる弾性力は弁体４が受ける駆動力よりも相当に小さい。このため、弁体円錐面４ｄと弁座３１ａとの面圧は比較的小さくなり、たとえ弁体円錐面４ｄと弁座３１ａとの間に硬い異物が介在した場合にも、圧痕やキズなどが生じることが抑制され、それにより閉弁時における流体漏れを抑制することができる。 According to this embodiment, after the valve body conical surface 4d is seated on the valve seat 31a, the O-ring 32 is elastically deformed in accordance with the lowering of the valve body 4, so that the valve seat 31a comes into contact with the valve body conical surface 4d. Descend while touching. The elastic force generated by the elastic deformation of the O-ring 32 is biased so that the valve seat 31a and the valve body conical surface 4d are pressed, but this elastic force is stronger than the driving force that the valve body 4 receives. is also quite small. Therefore, the surface pressure between the conical surface 4d of the valve body and the valve seat 31a is relatively small, and even if a hard foreign object is present between the conical surface 4d of the valve body and the valve seat 31a, there will be no dents or scratches. This can suppress fluid leakage when the valve is closed.

また、弁座部材３１の外径は、第２開口１０ｂの内径よりも小さいため、弁座部材３１は第２開口１０ｂ内で軸線直交方向に移動しうる。このため、弁体４と弁座部材３１の軸線がずれていたとしても、下降する弁体円錐面４ｄに合わせて弁座部材３１が自動的に調心され、それにより部品の組付公差を高めることなく適切な着座位置が確保され、流体漏れを抑制できる。 Further, since the outer diameter of the valve seat member 31 is smaller than the inner diameter of the second opening 10b, the valve seat member 31 can move within the second opening 10b in a direction perpendicular to the axis. Therefore, even if the axes of the valve body 4 and the valve seat member 31 are misaligned, the valve seat member 31 is automatically aligned with the descending conical surface 4d of the valve body, thereby reducing the assembly tolerance of the parts. An appropriate seating position is secured without raising the seat height, and fluid leakage can be suppressed.

下降する弁体４は、弁体円錐面４ｄが弁座３１ａに着座したのち、弁体円錐面４ｄがストッパ部１０ｄに当接することで係止されるため、ロータ５７の過回転による弁座ユニット３０の損傷などを抑制できる。 The descending valve body 4 is stopped when the conical surface 4d of the valve body contacts the stopper portion 10d after the conical surface 4d of the valve body seats on the valve seat 31a, so that the valve seat unit due to over-rotation of the rotor 57 30 damage can be suppressed.

一方、不図示の制御装置から開弁制御信号をステータ５５に給電することにより、ステッピングモータ５のロータ５７を他方向に回転駆動させると、減速機構６及びねじ送り機構２７を介して、ねじ駆動部材２２が軸線Ｌ方向上方に移動する。これにより、中間軸７は圧縮コイルばね２６の付勢力に従って上昇する。 On the other hand, when the rotor 57 of the stepping motor 5 is rotated in the other direction by supplying power to the stator 55 with a valve opening control signal from a control device (not shown), the screw is driven via the deceleration mechanism 6 and the screw feeding mechanism 27. The member 22 moves upward in the direction of the axis L. As a result, the intermediate shaft 7 rises according to the urging force of the compression coil spring 26.

中間軸７とともに弁体４が上昇すると、弁座部材３１は、圧縮されたＯ－リング３２の弾性力で上方に付勢されているため、弁体４に追従して上昇するが、第１開口１０ａと第２開口１０ｂとの段部に当接した時点で、その上昇が停止する。さらに弁体４が上昇することで、弁体円錐面４ｄが弁座３１ａから離間して、第２開口１０ｂが開放される。これにより第２配管Ｔ２から、流体が弁室ＶＣを通って第１配管Ｔ１と流れる。 When the valve body 4 rises together with the intermediate shaft 7, the valve seat member 31 follows the valve body 4 and rises because it is urged upward by the elastic force of the compressed O-ring 32. The ascent stops when the opening 10a and the second opening 10b come into contact with the stepped portion. As the valve body 4 further rises, the conical surface 4d of the valve body separates from the valve seat 31a, and the second opening 10b is opened. As a result, fluid flows from the second pipe T2 through the valve chamber VC to the first pipe T1.

（第２の実施形態）
図３は、第２の実施形態に係る弁座ユニット３０Ａの周辺を拡大して示す縦断面図である。第１の実施形態に対し、本実施形態は、弁本体１０Ａ及び弁座ユニット３０Ａの構成が異なる。それ以外の構成は、上述した実施形態と同様であるため、重複説明を省略する。弁本体１０Ａ及び弁座ユニット３０Ａも、図１に示す電動弁１に取り付け可能である。 (Second embodiment)
FIG. 3 is an enlarged longitudinal sectional view showing the periphery of a valve seat unit 30A according to the second embodiment. This embodiment differs from the first embodiment in the configurations of the valve body 10A and the valve seat unit 30A. The other configurations are the same as those of the embodiment described above, and therefore redundant explanation will be omitted. The valve body 10A and the valve seat unit 30A can also be attached to the electric valve 1 shown in FIG.

弁本体１０Ａは、弁室ＶＣの底面に、円形の第１開口１０Ａａと、第１開口１０Ａａより小径の第２開口１０Ａｂとを、この順序で軸線Ｌに同軸に形成している。第１開口１０Ａａと、第２開口１０Ａｂとにより、弁本体１０Ａの軸線方向上方に開口する環状凹部を構成する。第１開口１０Ａａ内には、真鍮などにより形成されたストッパリング３３Ａが固定されている。ストッパリング３３Ａの上端内周が、環状のストッパ部３３Ａａを構成する。 The valve body 10A has a circular first opening 10Aa and a second opening 10Ab having a smaller diameter than the first opening 10Aa formed coaxially with the axis L in this order on the bottom surface of the valve chamber VC. The first opening 10Aa and the second opening 10Ab constitute an annular recess that opens upward in the axial direction of the valve body 10A. A stopper ring 33A made of brass or the like is fixed within the first opening 10Aa. The inner periphery of the upper end of the stopper ring 33A constitutes an annular stopper portion 33Aa.

第２開口１０Ａｂの下端内周から、上方に向かって延在する内側円筒部１０Ａｃが形成されており、このため内側円筒部１０Ａｃの外周と第２開口１０Ａｂの内周との間に、環状溝１０Ａｄが形成される。 An inner cylindrical portion 10Ac extending upward from the inner periphery of the lower end of the second opening 10Ab is formed, so that an annular groove is formed between the outer periphery of the inner cylindrical portion 10Ac and the inner periphery of the second opening 10Ab. 10Ad is formed.

弁座部材３１Ａは、厚肉円筒部３１Ａａと、薄肉円筒部３１Ａｂとを連設してなり、厚肉円筒部３１Ａａと薄肉円筒部３１Ａｂの外径は等しく、これらは第２開口１０Ａｂの内径より所定量小さい。また薄肉円筒部３１Ａｂの内径は、内側円筒部１０Ａｃの外径より所定量大きい。このため、薄肉円筒部３１Ａｂは、Ｏ－リング３２Ａとともに環状溝１０Ａｄ内に配置されたとき、軸線直交方向に移動しうる。 The valve seat member 31A is made up of a thick cylindrical part 31Aa and a thin cylindrical part 31Ab, which have the same outer diameter and are smaller than the inner diameter of the second opening 10Ab. A predetermined amount smaller. Further, the inner diameter of the thin cylindrical portion 31Ab is larger by a predetermined amount than the outer diameter of the inner cylindrical portion 10Ac. Therefore, when the thin cylindrical portion 31Ab is placed in the annular groove 10Ad together with the O-ring 32A, it can move in the direction orthogonal to the axis.

厚肉円筒部３１Ａａの内径は、ストッパリング３３Ａの内径より小さく、薄肉円筒部３１Ａｂの内径より小さい。厚肉円筒部３１Ａａの内径と第２開口１０Ａｂの内径は略等しいと好ましい。厚肉円筒部３１Ａａの上端内周が、弁座３１Ａｃを構成する。また、弁座部材３１Ａ，Ｏ－リング３２Ａ，ストッパリング３３Ａにより、弁座ユニット３０Ａを構成する。 The inner diameter of the thick cylindrical portion 31Aa is smaller than the inner diameter of the stopper ring 33A and smaller than the inner diameter of the thin cylindrical portion 31Ab. It is preferable that the inner diameter of the thick cylindrical portion 31Aa and the inner diameter of the second opening 10Ab be approximately equal. The inner periphery of the upper end of the thick-walled cylindrical portion 31Aa constitutes the valve seat 31Ac. Further, the valve seat member 31A, O-ring 32A, and stopper ring 33A constitute a valve seat unit 30A.

弁座ユニット３０Ａの組付時には、弁本体１０Ａの上方側から、環状溝１０ＡｄにＯ－リング３２Ａを挿入したのち、その上から弁座部材３１Ａの薄肉円筒部３１Ａｂを挿入する。その後、第１開口１０Ａａ（環状凹部の開口周縁）に、ストッパリング３３Ａを圧入や溶接などにより固定して弁本体１０Ａと一体化する。これにより、弁座部材３１Ａの抜け止めを行うことができる。弁座ユニット３０の構成部品は、すべて弁本体１０Ａの上方側から組み付けることができる。 When assembling the valve seat unit 30A, the O-ring 32A is inserted into the annular groove 10Ad from above the valve body 10A, and then the thin cylindrical portion 31Ab of the valve seat member 31A is inserted from above. Thereafter, the stopper ring 33A is fixed to the first opening 10Aa (the opening periphery of the annular recess) by press fitting, welding, etc., and is integrated with the valve body 10A. Thereby, the valve seat member 31A can be prevented from coming off. All components of the valve seat unit 30 can be assembled from above the valve body 10A.

弁座ユニット３０Ａを弁本体１０Ａに組み付けた状態で、弁座部材３１Ａの厚肉円筒部３１Ａａの下面と、内側円筒部１０Ａｃの上端との間に隙間がある。開弁時には、弁座部材３１Ａは、Ｏ－リング３２Ａの弾性力で上方に付勢され、ストッパリング３３Ａの下面に当接して保持される。 When the valve seat unit 30A is assembled to the valve body 10A, there is a gap between the lower surface of the thick cylindrical portion 31Aa of the valve seat member 31A and the upper end of the inner cylindrical portion 10Ac. When the valve is opened, the valve seat member 31A is urged upward by the elastic force of the O-ring 32A, and is held in contact with the lower surface of the stopper ring 33A.

（電動弁の動作）
図１を参照して、ステッピングモータ５のロータ５７を一方向に回転駆動させたとき、中間軸７の下降とともに弁体４が下降し、弁体円錐面４ｄが弁座部材３１Ａの弁座３１Ａｃに着座して第２開口１０Ａｂが閉じられる（図３参照）。これにより弁室ＶＣを挟んで配管Ｔ２、Ｔ１との間で、流体の流れが中断する。 (Operation of electric valve)
Referring to FIG. 1, when the rotor 57 of the stepping motor 5 is rotationally driven in one direction, the valve body 4 is lowered as the intermediate shaft 7 is lowered, and the conical surface 4d of the valve body is aligned with the valve seat 31Ac of the valve seat member 31A. and the second opening 10Ab is closed (see FIG. 3). This interrupts the flow of fluid between the pipes T2 and T1 with the valve chamber VC in between.

本実施形態によれば、弁体円錐面４ｄが弁座３１Ａｃに着座したのち、弁体４の下降に応じて弁座部材３１Ａが下方に押されてＯ－リング３２Ａが弾性変形するため、弁座３１Ａｃは弁体円錐面４ｄに当接したまま下降する。Ｏ－リング３２Ａが弾性変形することにより発生する弾性力は、弁座３１Ａｃと弁体円錐面４ｄとが押圧されるように付勢されるが、かかる弾性力は弁体４が受ける駆動力よりも相当に小さい。このため、弁体円錐面４ｄと弁座３１Ａｃとの面圧は比較的小さくなり、たとえ弁体円錐面４ｄと弁座３１Ａｃとの間に硬い異物が介在した場合にも、圧痕やキズなどが生じることが抑制され、それにより閉弁時における流体漏れを抑制することができる。 According to this embodiment, after the valve body conical surface 4d is seated on the valve seat 31Ac, the valve seat member 31A is pushed downward in response to the lowering of the valve body 4, and the O-ring 32A is elastically deformed. The seat 31Ac descends while remaining in contact with the conical surface 4d of the valve body. The elastic force generated by the elastic deformation of the O-ring 32A is biased so that the valve seat 31Ac and the valve body conical surface 4d are pressed, but this elastic force is stronger than the driving force that the valve body 4 receives. is also quite small. Therefore, the surface pressure between the conical surface 4d of the valve body and the valve seat 31Ac is relatively small, and even if a hard foreign object is present between the conical surface 4d of the valve body and the valve seat 31Ac, there will be no dents or scratches. This can suppress fluid leakage when the valve is closed.

また、弁座部材３１Ａは、第２開口１０Ａｂ内で軸線直交方向に移動しうるため、弁体４と弁座部材３１Ａの軸線がずれていたとしても、下降する弁体円錐面４ｄに合わせて弁座部材３１Ａが自動的に調心され、それにより部品の組付公差を高めることなく適切な着座位置が確保され、流体漏れを抑制できる。ただし、弁座部材３１Ａを第２開口１０Ａｂ内で軸線方向にのみ摺動可能に保持してもよい。 Further, since the valve seat member 31A can move in the direction orthogonal to the axis within the second opening 10Ab, even if the axes of the valve body 4 and the valve seat member 31A are misaligned, the valve seat member 31A can move in accordance with the descending conical surface 4d of the valve body. The valve seat member 31A is automatically aligned, thereby ensuring an appropriate seating position without increasing assembly tolerances of the parts, thereby suppressing fluid leakage. However, the valve seat member 31A may be held slidably only in the axial direction within the second opening 10Ab.

下降する弁体４は、弁体円錐面４ｄがストッパ部３３Ａａに当接することで係止されるため、ロータ５７の過回転による弁座ユニット３０の損傷などを抑制できる。 Since the descending valve body 4 is stopped when the valve body conical surface 4d contacts the stopper portion 33Aa, damage to the valve seat unit 30 due to over-rotation of the rotor 57 can be suppressed.

一方、不図示の制御装置から開弁制御信号をステータ５５に給電することにより、中間軸７とともに弁体４が上昇すると、弁座部材３１Ａは、圧縮されたＯ－リング３２Ａの弾性力で上方に付勢されているため、弁体４に追従して上昇するが、ストッパリング３３Ａの下面に当接した時点で、その上昇が停止する。さらに弁体４が上昇することで、弁体円錐面４ｄが弁座３１Ａｃから離間して、第２開口１０Ａｂが開放される。これにより第２配管Ｔ２から、流体が弁室ＶＣを通って第１配管Ｔ１と流れる。 On the other hand, when the valve body 4 is raised together with the intermediate shaft 7 by supplying power to the stator 55 with a valve opening control signal from a control device (not shown), the valve seat member 31A is moved upward by the elastic force of the compressed O-ring 32A. Since it is biased by , it rises following the valve body 4, but the rise stops when it comes into contact with the lower surface of the stopper ring 33A. As the valve body 4 further rises, the conical surface 4d of the valve body separates from the valve seat 31Ac, and the second opening 10Ab is opened. As a result, fluid flows from the second pipe T2 through the valve chamber VC to the first pipe T1.

１ 電動弁
１０，１０Ａ 弁本体
３ キャン
４ 弁体
５ ステッピングモータ
５３ コイル
５５ ステータ
５７ ロータ
６ 減速機構
８ 軸部材
９ カバー
３０，３０Ａ 弁座ユニット
３１，３１Ａ 弁座部材
３２，３２Ａ Ｏ－リング（弾性体）
３３ 環状部材
３３Ａ ストッパリング
ＶＣ 弁室
Ｔ１ 第１配管
Ｔ２ 第２配管
Ｌ 軸線

1 Electric valve 10, 10A Valve body 3 Can 4 Valve body 5 Stepping motor 53 Coil 55 Stator 57 Rotor 6 Reduction mechanism 8 Shaft member 9 Cover 30, 30A Valve seat unit 31, 31A Valve seat member 32, 32A O-ring (elastic body)
33 Annular member 33A Stopper ring VC Valve chamber T1 First pipe T2 Second pipe L Axis

Claims (6)

弁本体と、
モータの駆動力により軸線方向に移動する弁体と、
弁座ユニットと、を有し、
前記弁座ユニットは、前記弁体が着座する弁座を備え、前記弁本体に対して少なくとも前記軸線方向に移動可能に保持された弁座部材、及び前記弁座部材と前記弁本体との間に配置された弾性変形可能な弾性体、を有する、
ことを特徴とする電動弁。 a valve body;
A valve body that moves in the axial direction by the driving force of a motor,
a valve seat unit;
The valve seat unit includes a valve seat on which the valve body is seated, a valve seat member held movably in at least the axial direction with respect to the valve body, and a space between the valve seat member and the valve body. an elastic body disposed in an elastically deformable body;
An electric valve characterized by: 前記弁体は、前記弁座に着座する円錐面を有し、
前記弁本体は、前記弁体が前記弁座に着座したのちに前記円錐面に当接する環状のストッパ部を有する、
ことを特徴とする請求項１に記載の電動弁。 The valve body has a conical surface that seats on the valve seat,
The valve body has an annular stopper portion that comes into contact with the conical surface after the valve body is seated on the valve seat.
The electric valve according to claim 1, characterized in that: 前記弁座部材は、前記弁本体に対して前記軸線方向に直交する方向に移動可能に保持されている、
ことを特徴とする請求項２に記載の電動弁。 The valve seat member is held movably relative to the valve body in a direction perpendicular to the axial direction.
The electric valve according to claim 2, characterized in that: 前記弁座部材、前記弾性体、及び環状部材は、前記弁本体の軸線方向に開口する環状凹部に収容され、前記環状凹部の開口周縁がカシメられる、
ことを特徴とする請求項１～３のいずれか一項に記載の電動弁。 The valve seat member, the elastic body, and the annular member are accommodated in an annular recess that opens in the axial direction of the valve body, and the opening periphery of the annular recess is caulked.
The electric valve according to any one of claims 1 to 3, characterized in that: 前記弾性体及び前記弁座部材は、前記弁本体の軸線方向に開口する環状凹部に収容され、前記弁座部材の外径より小さな内径を持つストッパリングが前記環状凹部の開口周縁に固定される、
ことを特徴とする請求項１～３のいずれか一項に記載の電動弁。 The elastic body and the valve seat member are accommodated in an annular recess opening in the axial direction of the valve body, and a stopper ring having an inner diameter smaller than an outer diameter of the valve seat member is fixed to the opening periphery of the annular recess. ,
The electric valve according to any one of claims 1 to 3, characterized in that: 前記モータの駆動力が、ギヤ式の減速機構を介して前記弁体に伝達される、
ことを特徴とする請求項１に記載の電動弁。

The driving force of the motor is transmitted to the valve body via a gear-type reduction mechanism.
The electric valve according to claim 1, characterized in that:
JP2022065323A 2022-04-11 2022-04-11 Motor valve Pending JP2023155781A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022065323A JP2023155781A (en) 2022-04-11 2022-04-11 Motor valve
CN202310298355.2A CN116892644A (en) 2022-04-11 2023-03-24 Electric valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2022065323A JP2023155781A (en) 2022-04-11 2022-04-11 Motor valve

Publications (1)

Publication Number Publication Date
JP2023155781A true JP2023155781A (en) 2023-10-23

Family

ID=88309874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022065323A Pending JP2023155781A (en) 2022-04-11 2022-04-11 Motor valve

Country Status (2)

Country Link
JP (1) JP2023155781A (en)
CN (1) CN116892644A (en)

Also Published As

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