WO2017154347A1 - Electric valve - Google Patents

Electric valve Download PDF

Info

Publication number
WO2017154347A1
WO2017154347A1 PCT/JP2017/000989 JP2017000989W WO2017154347A1 WO 2017154347 A1 WO2017154347 A1 WO 2017154347A1 JP 2017000989 W JP2017000989 W JP 2017000989W WO 2017154347 A1 WO2017154347 A1 WO 2017154347A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
washer
flange portion
motor
valve body
Prior art date
Application number
PCT/JP2017/000989
Other languages
French (fr)
Japanese (ja)
Inventor
雄希 北見
大樹 中川
元康 石黒
珠実 田邊
Original Assignee
株式会社鷺宮製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社鷺宮製作所 filed Critical 株式会社鷺宮製作所
Priority to CN201780011868.3A priority Critical patent/CN108700216A/en
Publication of WO2017154347A1 publication Critical patent/WO2017154347A1/en

Links

Images

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
    • 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
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means

Definitions

  • the present invention relates to an electric valve used for a refrigeration cycle or the like.
  • an electric valve used for a packaged air conditioner or a refrigerator is known (for example, Patent Document 1).
  • this motor-operated valve as shown in FIG. 6, when the stepping motor is driven and the rotor 103 rotates, the valve element 114 is cylindrically guided through the moving shaft 102 by the screw feeding operation of the female screw 131a and the male screw 121a. It moves along the axis L direction along 113. Thereby, adjustment which opens and closes the valve body 114 is made, and the flow rate of the refrigerant flowing in from the pipe joint 111 and flowing out from the pipe joint 112 is controlled.
  • valve body 114 when the valve body 114 also rotates as the moving shaft 102 rotates, when the lower end portion of the valve body 114 rotates on the valve seat member 115 in the valve closing state.
  • the possibility that the valve seat member 115 is worn cannot be denied.
  • the washer 218 is disposed between the flange portion 202 a formed at the lower end of the moving shaft 202 and the ceiling portion 213 a of the guide 213, thereby moving the moving shaft 202.
  • a motor-operated valve designed to reduce rotation transmitted from the motor has been developed (for example, see Patent Document 1).
  • An object of the present invention is to provide a motor-operated valve that can be operated with a small driving force and low power with little friction torque.
  • the motor-operated valve of the present invention is A motor-operated valve that converts rotational movement of a rotor into linear movement by screw connection between a male screw member and a female screw member, and moves a valve body accommodated in the valve body based on this linear movement in the axial direction.
  • a flange portion that projects from the outer periphery of the valve shaft that performs linear motion by the screw connection;
  • the motor operated valve of the present invention is The area of the surface of the washer that contacts the flange portion is smaller than the area of the surface of the flange portion that contacts the washer.
  • the friction torque can be further reduced, and the operation durability of the motor-operated valve can be improved.
  • the motor operated valve of the present invention is
  • the washer has a cross-sectional shape in which an area of a surface not in contact with the flange portion is larger than an area of a surface in contact with the flange portion.
  • the motor operated valve of the present invention is
  • the washer has a trapezoidal cross section or a cross section in which a step is formed. Thereby, when a washer wears, the contact area of a washer and a flange part can be made hard to spread.
  • the motor operated valve of the present invention is
  • the flange portion is made of a metal material
  • the washer is made of a resin material.
  • the motor operated valve of the present invention is
  • the resin material constituting the washer is any one of fluororesin, polyamide, polypropylene, and polyphenylene sulfide.
  • FIG. 1 is a cross-sectional view showing an electric valve 2 according to an embodiment.
  • “upper” or “lower” is defined in the state of FIG. That is, the rotor 4 is positioned above the valve body 17.
  • the valve main body 30 is integrally connected by welding or the like below the opening side of a case 60 made of a non-magnetic material and having a cylindrical cup shape.
  • the valve main body 30 is a press-molded product manufactured by pressing a stainless steel plate, and has a valve chamber 11 therein.
  • the valve body 30 is fixedly mounted with a first pipe joint 12 made of stainless steel or copper that directly communicates with the valve chamber 11.
  • a valve seat member 30 ⁇ / b> A in which the valve port 16 is formed is incorporated in the lower inside of the valve body 30.
  • a stainless steel or copper second pipe joint 15 communicating with the valve chamber 11 via the valve port 16 is fixedly attached to the valve seat member 30A.
  • Rotating rotor 4 is accommodated in the inner periphery of case 60, and valve shaft 41 is disposed on the shaft core portion of rotor 4 via bush member 33.
  • the valve shaft 41 and the rotor 4 coupled by the bush member 33 move integrally in the vertical direction while rotating.
  • a male screw 41 a is formed on the outer peripheral surface near the middle portion of the valve shaft 41.
  • the valve shaft 41 functions as a male screw member.
  • a stator including a yoke, a bobbin, and a coil (not shown) is arranged, and the rotor 4 and the stator constitute a stepping motor.
  • a guide support 52 is fixed to the ceiling surface of the case 60.
  • the guide support body 52 has a cylindrical portion 53 and an umbrella-shaped portion 54 formed on the upper end side of the cylindrical portion 53, and the whole is integrally formed by press working.
  • the umbrella-shaped portion 54 is molded in substantially the same shape as the inside of the top portion of the case 60.
  • a cylindrical member 65 that also serves as a guide for the valve shaft 41 is fitted in the cylindrical portion 53 of the guide support 52.
  • the cylindrical member 65 is made of a material containing a lubricant or a surface-treated part made of metal or synthetic resin, and rotatably holds the valve shaft 41.
  • valve shaft holder 6 that has a function of forming a screw coupling A with the valve shaft 41 and suppressing the inclination of the valve shaft 41 as will be described later. It is fixed to be relatively non-rotatable.
  • the valve shaft holder 6 includes an upper cylindrical small diameter portion 6a, a lower cylindrical large diameter portion 6b, a fitting portion 6c accommodated on the inner peripheral side of the valve body 30, and a ring-shaped flange portion 6f. Become.
  • the flange portion 6f of the valve shaft holder 6 is fixed between the upper end of the valve element guide member 72 and the case 60 by welding or the like. Further, a through hole 6 h is formed inside the valve shaft holder 6.
  • a female screw 6d is formed downward from the upper opening 6g of the cylindrical small diameter portion 6a of the valve shaft holder 6 to a predetermined depth.
  • the male screw 41a formed on the outer periphery of the valve shaft 41 and the female screw 6d formed on the inner periphery of the cylindrical small diameter portion 6a of the valve shaft holder 6 constitute a screw coupling A.
  • a pressure equalizing hole 51 is formed in a side surface of the cylindrical large diameter portion 6b of the valve shaft holder 6, and the pressure equalizing hole 51 allows the valve shaft holder chamber 83 in the cylindrical large diameter portion 6b and the rotor to be formed.
  • the accommodation chamber 67 (second back pressure chamber) communicates with it.
  • a cylindrical valve guide 18 that transmits the linear motion of the valve shaft 41 to the valve body 17 is disposed on the lower end side of the valve shaft 41 so as to be slidable with respect to the through hole 6 h of the valve shaft holder 6. Yes.
  • the valve guide 18 is bent at a substantially right angle on the ceiling 21 side by press molding.
  • a through hole 18 a is formed in the ceiling portion 21, and a contact surface 21 a that comes into contact with a washer 70 described later is formed in an annular shape on the lower surface of the ceiling portion 21.
  • a flange portion 41 b is formed which protrudes from the outer periphery of the valve shaft 41 and has an annular shape and has a diameter larger than the diameter of the other position of the valve shaft 41.
  • an annular upper surface 41 c that contacts the washer 70 is formed on the flange portion 41 b.
  • the valve shaft 41 and the flange portion 41b are made of a metal material such as stainless steel or brass.
  • valve shaft 41 is inserted into the through hole 18a of the valve guide 18 in a loose state so as to be rotatable with respect to the valve guide 18 and displaceable in the radial direction.
  • the flange portion 41b is disposed in the valve guide 18 so as to be rotatable with respect to the valve guide 18 and to be displaceable in the radial direction.
  • the valve shaft 41 is inserted through the through hole 18 a and the upper surface 41 c of the flange portion 41 b is disposed so as to face the ceiling portion 21 of the valve guide 18.
  • the flange portion 41b is larger in diameter than the through hole 18a of the valve guide 18 so that the valve shaft 41 is prevented from coming off.
  • valve shaft 41 and the valve guide 18 are movable in the radial direction with respect to each other, the valve guide 18 and the valve guide 18 and the valve shaft 41 are not required to have a high degree of concentric mounting accuracy with respect to the arrangement positions of the valve shaft holder 6 and the valve shaft 41. Concentricity with the valve body 17 is obtained.
  • a washer 70 is disposed between the ceiling portion 21 of the valve guide 18 and the flange portion 41 b of the valve shaft 41.
  • the material constituting the washer 70 is preferably a highly slipping resin such as fluororesin, PA (polyamide), PP (polypropylene), PPS (polyphenylene sulfide).
  • a specific example of the fluororesin is PTFE (polytetrafluoroethylene).
  • FIG. 3A is a plan view of the washer 70 viewed from above, and FIG. 3B is a cross-sectional view taken along the line AA. As shown in FIGS. 3A and 3B, a through hole 70 a is formed in the central portion of the washer 70.
  • a step 70d is formed on the outer periphery of the washer 70, and the area of the lower surface 70b of the washer 70 (that is, the surface in contact with the flange portion 41b) is smaller than the area of the upper surface 70c of the washer 70. Is formed. Further, as shown in FIG. 2, the maximum outer shape Df of the flange portion 41b is formed larger than the maximum outer shape Dw of the lower surface 70b of the washer 70, and the area of the lower surface 70b of the washer 70 is smaller than the area of the upper surface of the flange portion 41b. It is formed to become. As a result, when the washer 70 is worn, a side wall as seen in the conventional motor-operated valve shown in FIG.
  • valve body 17 As shown in FIG. 1, a compressed valve spring 27 and a spring receiver 35 are accommodated in the valve guide 18, and the valve body 17 is moved in the axial direction inside the valve body 30.
  • a valve body guide member 72 is disposed, and a seal member 48 is interposed between the valve body 17 and the valve body guide member 72.
  • a vertical hole 17 b and a horizontal conduction hole 17 c are formed as pressure equalization paths, respectively, and the pressure in the valve port 16 (in the second pipe joint 15) is equalized. It is led to the back pressure chamber 28 through the hole 17b and the conduction hole 17c which are paths.
  • the seal member 48 is an annular member formed by sandwiching an annular reinforcing plate 48b between an annular packing 48a having an L-shaped cross section, and is disposed above and below the annular packing 48a disposed above. It is preferable that a leaf spring for always urging the annular packing 48a outward is disposed below the annular packing 48a.
  • the maximum outer shape Df (see FIG. 2) of the flange portion 41b is formed larger than the maximum outer shape Dw of the lower surface 70b of the washer 70.
  • 70 is not formed with a side wall as in the conventional motor-operated valve shown in FIG. 7B, and the contact area between the washer 70 and the flange portion 41b is not increased. It is possible to reduce the friction torque generated with respect to 41b. For this reason, the motor-operated valve can be operated with a small driving force and low power.
  • a step 70d on the outer periphery of the washer 70 so that the area of the upper surface 70c of the washer 70 is smaller than the area of the upper surface of the flange portion 41b, the flange portion 41b even if the washer 70 is worn.
  • the contact area between the motor-operated valve 2 and the motor valve 2 can be improved.
  • the case where the step 70d is formed on the washer 70 has been described as an example.
  • it may be formed in a trapezoidal shape.
  • the contact area with the flange portion 41b can be made difficult to expand when the washer 70 is worn.
  • the area of the upper surface 70c and the area of the lower surface 70b may be equalized by narrowing the area of the upper surface 70c of the washer 70 to match the area of the lower surface 70b. Even in this case, when the washer 70 is worn, it is possible to prevent the contact area between the washer 70 and the flange portion 41b from expanding.
  • the case where the hole 17b and the conduction hole 17c are provided in the valve body 17 as an example of the pressure equalizing path has been described as an example. It does not have to be.
  • a piping member that guides the pressure of the valve port 16 to the back pressure chamber 28 may be provided separately.
  • the seal member 48 is interposed between the valve body 17 and the valve body guide member 72, and the pressure of the valve port 16 is guided to the back pressure chamber 28 through the pressure equalizing path.
  • the motor-operated valve 2 having a structure that cancels out the force due to the pressure acting on the body 17 has been described as an example, the motor-operated valve not having such a structure may be used.
  • Valve element guide member 1
  • Motorized valve 4 Rotor 6 Valve shaft holder 6a
  • Female thread 11 Valve chamber 16
  • Valve port 17 Valve body 18
  • Ceiling portion 21a Contact surface 28
  • Back pressure chamber 30 Valve body 30A
  • Valve seat member 41 Valve shaft 41a Male thread 41b
  • Flange portion 41c Upper surface 48
  • Seal member 70 Washer 70a Through hole 70b

Landscapes

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

Abstract

[Problem] To provide an electric valve with low friction torque and capable of being operated with a small driving force and low electric power. [Solution] An electric valve for converting the rotational motion of a rotor into linear motion by the threaded coupling of a male threaded member with a female threaded member and moving a valve body housed in a main valve body in the axial direction by means of said linear motion, wherein: the electric valve is provided with a flange section that is formed to expand from the circumference of a valve shaft and that moves linearly as a result of the threaded coupling, a circular ceiling section that is formed at the top of a cylindrical valve guide and that transmits the linear motion of the valve shaft to the valve body, and a washer disposed between the flange section and the ceiling section; and the maximum outer diameter of the flange section is greater than the maximum outer diameter of the surface of the washer that contacts the flange section.

Description

電動弁Motorized valve
　本発明は、冷凍サイクルなどに使用される電動弁に関する。 The present invention relates to an electric valve used for a refrigeration cycle or the like.
　従来、パッケージエアコンや冷凍機に用いられる電動弁が知られている（例えば、特許文献１）。この電動弁においては、図６に示すように、ステッピングモータが駆動してロータ１０３が回転すると、雌ねじ１３１ａと雄ねじ１２１ａのねじ送り作業により、動軸１０２を介して弁体１１４が円筒状のガイド１１３に沿って軸Ｌ方向に移動する。これにより、弁体１１４を開閉する調整がなされ、管継手１１１から流入して管継手１１２から流出する冷媒の流量が制御される。 Conventionally, an electric valve used for a packaged air conditioner or a refrigerator is known (for example, Patent Document 1). In this motor-operated valve, as shown in FIG. 6, when the stepping motor is driven and the rotor 103 rotates, the valve element 114 is cylindrically guided through the moving shaft 102 by the screw feeding operation of the female screw 131a and the male screw 121a. It moves along the axis L direction along 113. Thereby, adjustment which opens and closes the valve body 114 is made, and the flow rate of the refrigerant flowing in from the pipe joint 111 and flowing out from the pipe joint 112 is controlled.
　ところで、このような電動弁において、動軸１０２の回転に伴って弁体１１４も回転するような構造の場合、閉弁状態において弁体１１４の下端部が弁座部材１１５上で回転した場合には、弁座部材１１５が摩耗する可能性も否定できない。 By the way, in such a motor-operated valve, when the valve body 114 also rotates as the moving shaft 102 rotates, when the lower end portion of the valve body 114 rotates on the valve seat member 115 in the valve closing state. The possibility that the valve seat member 115 is worn cannot be denied.
　このおそれを解決するため、図７（ａ）に示すように、動軸２０２の下端に形成されたフランジ部２０２ａとガイド２１３の天井部２１３ａとの間にワッシャ２１８を配置することで動軸２０２から伝達される回転を軽減するように設計された電動弁が開発されている（例えば、特許文献１参照）。 In order to solve this fear, as shown in FIG. 7A, the washer 218 is disposed between the flange portion 202 a formed at the lower end of the moving shaft 202 and the ceiling portion 213 a of the guide 213, thereby moving the moving shaft 202. A motor-operated valve designed to reduce rotation transmitted from the motor has been developed (for example, see Patent Document 1).
特開２００３－１４８６４３号公報Japanese Patent Laid-Open No. 2003-148643
　しかしながら、上述の図７（ａ）に示す電動弁においては、動軸２０２の回転運動が繰り返されてワッシャ２１８のフランジ部２０２ａとの接触面が摩耗した場合、図７（ｂ）に示すように、側壁２１８ｂがワッシャ２１８の外周に形成される。この場合、ワッシャ２１８の下面のみならず、側壁２１８ｂまでもがフランジ部２０２ａと接触することとなり、フランジ部２０２ａとの接触面積が大きくなる。このため、ワッシャ２１８とフランジ部２０２ａとの間に生じる摩擦トルクが増加し、動軸２０２の回転が弁体に伝達され易くなるという問題がある。また、このように摩擦トルクが増加した場合、大きな駆動力で電動弁を作動させなければならないため高電力が必要となる。
　本発明の目的は、摩擦トルクが少なく、小さな駆動力かつ低電力で作動できる電動弁を提供することである。 However, in the motor-operated valve shown in FIG. 7A described above, when the rotational movement of the moving shaft 202 is repeated and the contact surface with the flange portion 202a of the washer 218 is worn, as shown in FIG. 7B. Side walls 218b are formed on the outer periphery of the washer 218. In this case, not only the lower surface of the washer 218 but also the side wall 218b comes into contact with the flange portion 202a, and the contact area with the flange portion 202a increases. For this reason, the friction torque produced between the washer 218 and the flange part 202a increases, and there exists a problem that rotation of the moving shaft 202 becomes easy to be transmitted to a valve body. Further, when the friction torque increases in this way, the electric valve must be operated with a large driving force, so that high power is required.
An object of the present invention is to provide a motor-operated valve that can be operated with a small driving force and low power with little friction torque.
　上記目的を達成するための本発明の電動弁は、
　ロータの回転運動を、雄ネジ部材と雌ネジ部材とのネジ結合により直線運動に変換し、この直線運動に基づいて弁本体内に収容された弁体を軸方向に移動させる電動弁であって、
　前記ネジ結合により直線運動を行う弁軸の外周に張り出して形成されたフランジ部と、
　前記弁軸の直線運動を前記弁体に伝達する筒状の弁ガイドの上方に形成された環状の天井部と、
　前記フランジ部と前記天井部との間に配置されたワッシャとを備え、
　前記フランジ部の最大外径が前記ワッシャの前記フランジ部と接触する面の最大外径よりも大きいことを特徴とする。 To achieve the above object, the motor-operated valve of the present invention is
A motor-operated valve that converts rotational movement of a rotor into linear movement by screw connection between a male screw member and a female screw member, and moves a valve body accommodated in the valve body based on this linear movement in the axial direction. ,
A flange portion that projects from the outer periphery of the valve shaft that performs linear motion by the screw connection;
An annular ceiling formed above a cylindrical valve guide that transmits the linear motion of the valve shaft to the valve body;
A washer disposed between the flange portion and the ceiling portion,
The maximum outer diameter of the flange portion is larger than the maximum outer diameter of a surface that contacts the flange portion of the washer.
　これにより、フランジ部が回転したとしても、図７（ｂ）に示すように、側壁２１８ｂがワッシャ２１８に形成されることがなくなるため、ワッシャ２１８とフランジ部２０２ａとの間に生じる摩擦トルクを低減させることができる。このため、小さな駆動力かつ低電力で電動弁を作動させることができる。 As a result, even if the flange portion rotates, as shown in FIG. 7B, the side wall 218b is not formed on the washer 218, so that the friction torque generated between the washer 218 and the flange portion 202a is reduced. Can be made. For this reason, the motor-operated valve can be operated with a small driving force and low power.
　また本発明の電動弁は、
　前記ワッシャの前記フランジ部と接触する面の面積が、前記フランジ部の前記ワッシャと接触する側の面の面積よりも小さいことを特徴とする。 Moreover, the motor operated valve of the present invention is
The area of the surface of the washer that contacts the flange portion is smaller than the area of the surface of the flange portion that contacts the washer.
　このように、前記ワッシャの前記フランジ部と接触する面の面積を小さくすることにより摩擦トルクをさらに低減することができ、電動弁の作動耐久性を向上させることができる。 Thus, by reducing the area of the surface of the washer that contacts the flange portion, the friction torque can be further reduced, and the operation durability of the motor-operated valve can be improved.
　また本発明の電動弁は、
　前記ワッシャが、前記フランジ部と接触する側の面の面積よりも前記フランジ部と接触しない側の面の面積が大きくなる断面形状を有することを特徴とする。
　これにより、弁ガイドの上方に形成された天井部と接触する側のワッシャの面積を確保することができ、弁ガイドをワッシャで的確に支持することができる。 Moreover, the motor operated valve of the present invention is
The washer has a cross-sectional shape in which an area of a surface not in contact with the flange portion is larger than an area of a surface in contact with the flange portion.
Thereby, the area of the washer on the side contacting the ceiling formed above the valve guide can be secured, and the valve guide can be accurately supported by the washer.
　また本発明の電動弁は、
　前記ワッシャが、台形状の断面または段差が形成された断面を有することを特徴とする。
　これにより、ワッシャが摩耗した場合において、ワッシャとフランジ部との接触面積を広がり難くすることができる。 Moreover, the motor operated valve of the present invention is
The washer has a trapezoidal cross section or a cross section in which a step is formed.
Thereby, when a washer wears, the contact area of a washer and a flange part can be made hard to spread.
　また本発明の電動弁は、
　前記フランジ部が、金属製の素材から成り、前記ワッシャが、樹脂製の素材から成ることを特徴とする。 Moreover, the motor operated valve of the present invention is
The flange portion is made of a metal material, and the washer is made of a resin material.
　また本発明の電動弁は、
　前記ワッシャを構成する樹脂製の素材が、フッ素樹脂、ポリアミド、ポリプロピレン、ポリフェニレンサルファイドのいずれかであることを特徴とする。 Moreover, the motor operated valve of the present invention is
The resin material constituting the washer is any one of fluororesin, polyamide, polypropylene, and polyphenylene sulfide.
　本発明に係る発明によれば、摩擦トルクが少なく、小さな駆動力かつ低電力で作動できる電動弁を提供することができる。 According to the invention of the present invention, it is possible to provide a motor-operated valve that can be operated with a small driving force and low power with little friction torque.
実施の形態に係る電動弁の断面図である。It is sectional drawing of the motor operated valve which concerns on embodiment. 図１に示した電動弁の要部拡大断面図である。It is a principal part expanded sectional view of the motor operated valve shown in FIG. 実施の形態に係る電動弁に用いられるワッシャの平面図および断面図である。It is the top view and sectional view of the washer used for the motor operated valve concerning an embodiment. 他の実施の形態に係る電動弁の要部拡大断面図である。It is a principal part expanded sectional view of the motor operated valve concerning other embodiments. 他の実施の形態に係る電動弁の要部拡大断面図である。It is a principal part expanded sectional view of the motor operated valve concerning other embodiments. 従来の電動弁の断面図である。It is sectional drawing of the conventional motor operated valve. 動軸の回転の伝達を軽減するワッシャを備えた従来の電動弁を示す概念図である。It is a conceptual diagram which shows the conventional motor operated valve provided with the washer which reduces transmission of rotation of a moving shaft.
　以下、図面を参照して、実施の形態に係る電動弁について説明する。図１は、実施の形態に係る電動弁２を示した断面図である。なお、本明細書において、「上」あるいは「下」とは図１の状態で規定したものである。すなわち、ロータ４は弁体１７より上方に位置している。 Hereinafter, the motor-operated valve according to the embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing an electric valve 2 according to an embodiment. In the present specification, “upper” or “lower” is defined in the state of FIG. That is, the rotor 4 is positioned above the valve body 17.
　この電動弁２では、非磁性体製で筒状のカップ形状をなすケース６０の開口側の下方に、弁本体３０が溶接などにより一体的に接続されている。
　ここで、弁本体３０は、ステンレス鋼板のプレス加工により製作されたプレス成型品であり、内部に弁室１１を有している。また、弁本体３０には、弁室１１に直接連通するステンレス製や銅製の第１の管継手１２が固定装着されている。さらに、弁本体３０の下方内側には、弁ポート１６が形成された弁座部材３０Ａが組み込まれている。弁座部材３０Ａには、弁ポート１６を介して弁室１１に連通するステンレス製や銅製の第２の管継手１５が固定装着されている。 In the motor-operated valve 2, the valve main body 30 is integrally connected by welding or the like below the opening side of a case 60 made of a non-magnetic material and having a cylindrical cup shape.
Here, the valve main body 30 is a press-molded product manufactured by pressing a stainless steel plate, and has a valve chamber 11 therein. The valve body 30 is fixedly mounted with a first pipe joint 12 made of stainless steel or copper that directly communicates with the valve chamber 11. Further, a valve seat member 30 </ b> A in which the valve port 16 is formed is incorporated in the lower inside of the valve body 30. A stainless steel or copper second pipe joint 15 communicating with the valve chamber 11 via the valve port 16 is fixedly attached to the valve seat member 30A.
　ケース６０の内周には、回転可能なロータ４が収容され、ロータ４の軸芯部分には、ブッシュ部材３３を介して弁軸４１が配置されている。ブッシュ部材３３で結合されたこの弁軸４１とロータ４とは、回転しながら上下方向に一体的に移動する。なお、この弁軸４１の中間部付近の外周面には雄ネジ４１ａが形成されている。本実施例では、弁軸４１が雄ネジ部材として機能している。 Rotating rotor 4 is accommodated in the inner periphery of case 60, and valve shaft 41 is disposed on the shaft core portion of rotor 4 via bush member 33. The valve shaft 41 and the rotor 4 coupled by the bush member 33 move integrally in the vertical direction while rotating. A male screw 41 a is formed on the outer peripheral surface near the middle portion of the valve shaft 41. In the present embodiment, the valve shaft 41 functions as a male screw member.
　ケース６０の外周には、図示しないヨーク、ボビン、およびコイルなどからなるステータが配置され、ロータ４とステータとでステッピングモータが構成されている。
　ケース６０の天井面にはガイド支持体５２が固定されている。ガイド支持体５２は、円筒部５３と、円筒部５３の上端側に形成された傘状部５４とを有し、全体をプレス加工により一体成型されている。傘状部５４はケース６０の頂部内側と略同形状に成型されている。 On the outer periphery of the case 60, a stator including a yoke, a bobbin, and a coil (not shown) is arranged, and the rotor 4 and the stator constitute a stepping motor.
A guide support 52 is fixed to the ceiling surface of the case 60. The guide support body 52 has a cylindrical portion 53 and an umbrella-shaped portion 54 formed on the upper end side of the cylindrical portion 53, and the whole is integrally formed by press working. The umbrella-shaped portion 54 is molded in substantially the same shape as the inside of the top portion of the case 60.
　ガイド支持体５２の円筒部５３内には、弁軸４１のガイドを兼ねる筒部材６５が嵌合されている。筒部材６５は、金属あるいは合成樹脂による潤滑材入り素材あるいは表面処理を施された部品により構成され、弁軸４１を回転可能に保持している。 A cylindrical member 65 that also serves as a guide for the valve shaft 41 is fitted in the cylindrical portion 53 of the guide support 52. The cylindrical member 65 is made of a material containing a lubricant or a surface-treated part made of metal or synthetic resin, and rotatably holds the valve shaft 41.
　弁軸４１のブッシュ部材３３より下方には、後述するように弁軸４１との間でネジ結合Ａを構成するとともに弁軸４１の傾きを抑制する機能を有する弁軸ホルダ６が、弁本体３０に対して相対的に回転不能に固定されている。 Below the bush member 33 of the valve shaft 41, a valve shaft holder 6 that has a function of forming a screw coupling A with the valve shaft 41 and suppressing the inclination of the valve shaft 41 as will be described later. It is fixed to be relatively non-rotatable.
　弁軸ホルダ６は、上部側の筒状小径部６ａと下部側の筒状大径部６ｂと弁本体３０の内周部側に収容される嵌合部６ｃとリング状のフランジ部６ｆとからなる。そして、弁軸ホルダ６のフランジ部６ｆは、弁体案内部材７２の上端とケース６０との間に溶接などで固定されている。また、弁軸ホルダ６の内部には、貫通孔６ｈが形成されている。 The valve shaft holder 6 includes an upper cylindrical small diameter portion 6a, a lower cylindrical large diameter portion 6b, a fitting portion 6c accommodated on the inner peripheral side of the valve body 30, and a ring-shaped flange portion 6f. Become. The flange portion 6f of the valve shaft holder 6 is fixed between the upper end of the valve element guide member 72 and the case 60 by welding or the like. Further, a through hole 6 h is formed inside the valve shaft holder 6.
　また、この弁軸ホルダ６の筒状小径部６ａの上部開口部６ｇから所定の深さまで下方に向かって雌ネジ６ｄが形成されている。
　そして、弁軸４１の外周に形成された雄ネジ４１ａと、弁軸ホルダ６の筒状小径部６ａの内周に形成された雌ネジ６ｄとにより、ネジ結合Ａが構成されている。 A female screw 6d is formed downward from the upper opening 6g of the cylindrical small diameter portion 6a of the valve shaft holder 6 to a predetermined depth.
The male screw 41a formed on the outer periphery of the valve shaft 41 and the female screw 6d formed on the inner periphery of the cylindrical small diameter portion 6a of the valve shaft holder 6 constitute a screw coupling A.
　さらに、弁軸ホルダ６の筒状大径部６ｂの側面には、均圧孔５１が穿設され、この均圧孔５１により、筒状大径部６ｂ内の弁軸ホルダ室８３と、ロータ収容室６７（第２の背圧室）との間が連通している。このように均圧孔５１を設けることにより、ケース６０のロータ４を収容する空間と、弁軸ホルダ６内の空間とを連通することにより、弁軸ホルダ６の移動動作をスムーズに行うことができる。 Further, a pressure equalizing hole 51 is formed in a side surface of the cylindrical large diameter portion 6b of the valve shaft holder 6, and the pressure equalizing hole 51 allows the valve shaft holder chamber 83 in the cylindrical large diameter portion 6b and the rotor to be formed. The accommodation chamber 67 (second back pressure chamber) communicates with it. By providing the pressure equalizing hole 51 as described above, the movement of the valve shaft holder 6 can be smoothly performed by communicating the space in which the rotor 4 of the case 60 is accommodated with the space in the valve shaft holder 6. it can.
　また、弁軸４１の下端側には、弁軸４１の直線運動を弁体１７に伝達する筒状の弁ガイド１８が、弁軸ホルダ６の貫通孔６ｈに対して摺動可能に配置されている。以下、図２を参照しながら、実施の形態に係る電動弁２の要部について説明する。図２に示すように、弁ガイド１８は天井部２１側がプレス成型により略直角に折り曲げられている。そして、この天井部２１には貫通孔１８ａが形成され、天井部２１の下側の面には後述するワッシャ７０と接触する接触面２１ａが円環状に形成されている。 A cylindrical valve guide 18 that transmits the linear motion of the valve shaft 41 to the valve body 17 is disposed on the lower end side of the valve shaft 41 so as to be slidable with respect to the through hole 6 h of the valve shaft holder 6. Yes. Hereinafter, the principal part of the motor-operated valve 2 according to the embodiment will be described with reference to FIG. As shown in FIG. 2, the valve guide 18 is bent at a substantially right angle on the ceiling 21 side by press molding. A through hole 18 a is formed in the ceiling portion 21, and a contact surface 21 a that comes into contact with a washer 70 described later is formed in an annular shape on the lower surface of the ceiling portion 21.
　一方、弁軸４１の下方には、弁軸４１の外周から張り出して円環状に形成され弁軸４１の他の位置の径よりも径の大きなフランジ部４１ｂが形成されている。ここで、フランジ部４１ｂには、ワッシャ７０と接触する円環状の上面４１ｃが形成されている。なお、弁軸４１およびフランジ部４１ｂは、ステンレスや真鍮などの金属製の素材によって構成されている。 On the other hand, below the valve shaft 41, a flange portion 41 b is formed which protrudes from the outer periphery of the valve shaft 41 and has an annular shape and has a diameter larger than the diameter of the other position of the valve shaft 41. Here, an annular upper surface 41 c that contacts the washer 70 is formed on the flange portion 41 b. The valve shaft 41 and the flange portion 41b are made of a metal material such as stainless steel or brass.
　ここで、弁軸４１は、弁ガイド１８に対して回転可能、かつ径方向に変位可能となるように弁ガイド１８の貫通孔１８ａに遊貫状態で挿入されている。さらに、フランジ部４１ｂは、弁ガイド１８に対して回転可能、かつ、径方向に変位可能となるように弁ガイド１８内に配置されている。また、弁軸４１は貫通孔１８ａを挿通し、フランジ部４１ｂの上面４１ｃが、弁ガイド１８の天井部２１に対向するように配置されている。なお、フランジ部４１ｂが弁ガイド１８の貫通孔１８ａより大径であることにより、弁軸４１の抜け止めがなされている。 Here, the valve shaft 41 is inserted into the through hole 18a of the valve guide 18 in a loose state so as to be rotatable with respect to the valve guide 18 and displaceable in the radial direction. Further, the flange portion 41b is disposed in the valve guide 18 so as to be rotatable with respect to the valve guide 18 and to be displaceable in the radial direction. Further, the valve shaft 41 is inserted through the through hole 18 a and the upper surface 41 c of the flange portion 41 b is disposed so as to face the ceiling portion 21 of the valve guide 18. The flange portion 41b is larger in diameter than the through hole 18a of the valve guide 18 so that the valve shaft 41 is prevented from coming off.
　弁軸４１と弁ガイド１８とが互いに径方向に移動可能であることにより、弁軸ホルダ６および弁軸４１の配置位置に関して、さほど高度な同芯取付精度を求められることなく、弁ガイド１８および弁体１７との同芯性が得られる。 Since the valve shaft 41 and the valve guide 18 are movable in the radial direction with respect to each other, the valve guide 18 and the valve guide 18 and the valve shaft 41 are not required to have a high degree of concentric mounting accuracy with respect to the arrangement positions of the valve shaft holder 6 and the valve shaft 41. Concentricity with the valve body 17 is obtained.
　また、弁ガイド１８の天井部２１と弁軸４１のフランジ部４１ｂとの間にはワッシャ７０が配置されている。ワッシャ７０を構成する素材は、フッ素樹脂、ＰＡ（ポリアミド）、ＰＰ（ポリプロピレン）、ＰＰＳ（ポリフェニレンサルファイド）などの高滑性樹脂であることが好ましい。なお、フッ素樹脂の具体例としては、ＰＴＦＥ（ポリテトラフルオロエチレン）などが考えられる。図３（ａ）は、ワッシャ７０を上方から視た平面図であり、図３（ｂ）は、そのＡ－Ａ断面図である。図３（ａ）、（ｂ）に示すように、ワッシャ７０の中央部には貫通孔７０ａが形成されている。 Further, a washer 70 is disposed between the ceiling portion 21 of the valve guide 18 and the flange portion 41 b of the valve shaft 41. The material constituting the washer 70 is preferably a highly slipping resin such as fluororesin, PA (polyamide), PP (polypropylene), PPS (polyphenylene sulfide). A specific example of the fluororesin is PTFE (polytetrafluoroethylene). FIG. 3A is a plan view of the washer 70 viewed from above, and FIG. 3B is a cross-sectional view taken along the line AA. As shown in FIGS. 3A and 3B, a through hole 70 a is formed in the central portion of the washer 70.
　また、ワッシャ７０の外周には段差７０ｄが形成されており、ワッシャ７０の上面７０ｃの面積よりもワッシャ７０の下面７０ｂ（すなわち、フランジ部４１ｂと接触する面）の面積の方が小さくなるように形成されている。また、図２に示すように、フランジ部４１ｂの最大外形Ｄｆがワッシャ７０の下面７０ｂの最大外形Ｄｗよりも大きく形成され、ワッシャ７０の下面７０ｂの面積がフランジ部４１ｂの上面の面積よりも小さくなるように形成されている。これにより、ワッシャ７０が摩耗した場合に、図７（ｂ）に示す従来の電動弁に見られるような側壁が形成されることがなく、ワッシャ７０とフランジ部４１ｂとの接触面積が広がることを防止することができる。また、ワッシャ７０の上面７０ｃの面積を下面７０ｂの面積よりも大きくすることにより、天井部２１との接触面積を適度に確保することができ、弁ガイド１８をワッシャ７０で的確に支持することができる。 Further, a step 70d is formed on the outer periphery of the washer 70, and the area of the lower surface 70b of the washer 70 (that is, the surface in contact with the flange portion 41b) is smaller than the area of the upper surface 70c of the washer 70. Is formed. Further, as shown in FIG. 2, the maximum outer shape Df of the flange portion 41b is formed larger than the maximum outer shape Dw of the lower surface 70b of the washer 70, and the area of the lower surface 70b of the washer 70 is smaller than the area of the upper surface of the flange portion 41b. It is formed to become. As a result, when the washer 70 is worn, a side wall as seen in the conventional motor-operated valve shown in FIG. 7B is not formed, and the contact area between the washer 70 and the flange portion 41b is increased. Can be prevented. In addition, by making the area of the upper surface 70c of the washer 70 larger than the area of the lower surface 70b, a contact area with the ceiling portion 21 can be appropriately secured, and the valve guide 18 can be accurately supported by the washer 70. it can.
　なお、図１に示すように、弁ガイド１８内には、圧縮された弁バネ２７とバネ受け３５とが収容され、また、弁本体３０の内側には、弁体１７の軸方向への移動を案内する弁体案内部材７２が配置され、弁体１７と弁体案内部材７２との間にシール部材４８が介装されている。 As shown in FIG. 1, a compressed valve spring 27 and a spring receiver 35 are accommodated in the valve guide 18, and the valve body 17 is moved in the axial direction inside the valve body 30. A valve body guide member 72 is disposed, and a seal member 48 is interposed between the valve body 17 and the valve body guide member 72.
　弁体１７の内部には、縦方向の孔部１７ｂと横方向の導通孔１７ｃがそれぞれ均圧路として形成されており、弁ポート１６（第２の管継手１５内）の圧力は、均圧路である孔部１７ｂ、導通孔１７ｃを介して背圧室２８に導かれる。 Inside the valve body 17, a vertical hole 17 b and a horizontal conduction hole 17 c are formed as pressure equalization paths, respectively, and the pressure in the valve port 16 (in the second pipe joint 15) is equalized. It is led to the back pressure chamber 28 through the hole 17b and the conduction hole 17c which are paths.
　また、シール部材４８は、断面Ｌ字状の環状パッキン４８ａの間に環状の補強板４８ｂを挟んで形成された環状の部材であり、上方に配置された環状パッキン４８ａの上側、および下方に配置された環状パッキン４８ａの下側に、それぞれ環状パッキン４８ａを常に外側に付勢する板バネが配置されるのが好ましい。 Further, the seal member 48 is an annular member formed by sandwiching an annular reinforcing plate 48b between an annular packing 48a having an L-shaped cross section, and is disposed above and below the annular packing 48a disposed above. It is preferable that a leaf spring for always urging the annular packing 48a outward is disposed below the annular packing 48a.
　この実施の形態に係る発明によれば、フランジ部４１ｂの最大外形Ｄｆ（図２参照）をワッシャ７０の下面７０ｂの最大外形Ｄｗよりも大きく形成することにより、ワッシャ７０が摩耗しても、ワッシャ７０に、図７（ｂ）に示す従来の電動弁に見られるような側壁が形成されることがなく、ワッシャ７０とフランジ部４１ｂとの接触面積が広がることがなくなるため、ワッシャ７０とフランジ部４１ｂとの間に生じる摩擦トルクを低減させることができる。このため、小さな駆動力かつ低電力で電動弁を作動させることができる。 According to the invention according to this embodiment, the maximum outer shape Df (see FIG. 2) of the flange portion 41b is formed larger than the maximum outer shape Dw of the lower surface 70b of the washer 70. 70 is not formed with a side wall as in the conventional motor-operated valve shown in FIG. 7B, and the contact area between the washer 70 and the flange portion 41b is not increased. It is possible to reduce the friction torque generated with respect to 41b. For this reason, the motor-operated valve can be operated with a small driving force and low power.
　また、ワッシャ７０の外周には段差７０ｄを形成してワッシャ７０の上面７０ｃの面積がフランジ部４１ｂの上面の面積よりも小さくなるように形成することにより、ワッシャ７０が摩耗してもフランジ部４１ｂとの接触面積が広がらないようにすることができ、電動弁２の作動耐久性を向上させることができる。 Further, by forming a step 70d on the outer periphery of the washer 70 so that the area of the upper surface 70c of the washer 70 is smaller than the area of the upper surface of the flange portion 41b, the flange portion 41b even if the washer 70 is worn. The contact area between the motor-operated valve 2 and the motor valve 2 can be improved.
　なお、上述の実施の形態においては、図３（ｂ）に示すように、ワッシャ７０に段差７０ｄが形成されている場合を例に説明したが、図４に示すように、ワッシャ７０の断面が台形状に形成されていてもよい。このように、ワッシャ７０の断面を台形状にした場合においても、ワッシャ７０が摩耗した場合にフランジ部４１ｂとの接触面積を広がり難くすることができる。 In the above-described embodiment, as shown in FIG. 3B, the case where the step 70d is formed on the washer 70 has been described as an example. However, as shown in FIG. It may be formed in a trapezoidal shape. Thus, even when the washer 70 has a trapezoidal cross section, the contact area with the flange portion 41b can be made difficult to expand when the washer 70 is worn.
　また、上述の実施の形態において、図５に示すように、ワッシャ７０の上面７０ｃの面積を狭めて下面７０ｂの面積に合わせ、上面７０ｃの面積と下面７０ｂの面積を均等にしてもよい。この場合においても、ワッシャ７０が摩耗した場合にワッシャ７０とフランジ部４１ｂとの接触面積が広がることを防止することができる。 In the above-described embodiment, as shown in FIG. 5, the area of the upper surface 70c and the area of the lower surface 70b may be equalized by narrowing the area of the upper surface 70c of the washer 70 to match the area of the lower surface 70b. Even in this case, when the washer 70 is worn, it is possible to prevent the contact area between the washer 70 and the flange portion 41b from expanding.
　また、上述の実施の形態においては、均圧路として孔部１７ｂ、導通孔１７ｃを弁体１７内に設けた場合を例に説明しているが、必ずしも弁体１７内に均圧路を設けなくてもよい。たとえば、弁体１７内に均圧路を設けることに代えて、別途、弁ポート１６の圧力を背圧室２８に導く配管部材を配置してもよい。 In the above-described embodiment, the case where the hole 17b and the conduction hole 17c are provided in the valve body 17 as an example of the pressure equalizing path has been described as an example. It does not have to be. For example, instead of providing a pressure equalization path in the valve body 17, a piping member that guides the pressure of the valve port 16 to the back pressure chamber 28 may be provided separately.
　さらに、上述の実施の形態においては、弁体１７と弁体案内部材７２との間にシール部材４８を介装し、弁ポート１６の圧力を均圧路によって背圧室２８に導くことで弁体１７に作用する圧力による力を打ち消す構造を備えた電動弁２を例に説明しているが、このような構造を備えない電動弁であってもよい。 Further, in the above-described embodiment, the seal member 48 is interposed between the valve body 17 and the valve body guide member 72, and the pressure of the valve port 16 is guided to the back pressure chamber 28 through the pressure equalizing path. Although the motor-operated valve 2 having a structure that cancels out the force due to the pressure acting on the body 17 has been described as an example, the motor-operated valve not having such a structure may be used.
２     電動弁
４     ロータ
６     弁軸ホルダ
６ａ   雌ネジ
１１   弁室
１６   弁ポート
１７   弁体
１８   弁ガイド
１８ａ 貫通孔
２１   天井部
２１ａ 接触面
２８   背圧室
３０   弁本体
３０Ａ 弁座部材
４１   弁軸
４１ａ 雄ネジ
４１ｂ フランジ部
４１ｃ 上面
４８   シール部材
７０   ワッシャ
７０ａ 貫通孔
７０ｂ 下面
７０ｃ 上面
７０ｄ 段差
７２   弁体案内部材 2 Motorized valve 4 Rotor 6 Valve shaft holder 6a Female thread 11 Valve chamber 16 Valve port 17 Valve body 18 Valve guide 18a Through hole 21 Ceiling portion 21a Contact surface 28 Back pressure chamber 30 Valve body 30A Valve seat member 41 Valve shaft 41a Male thread 41b Flange portion 41c Upper surface 48 Seal member 70 Washer 70a Through hole 70b Lower surface 70c Upper surface 70d Step 72 Valve element guide member

Claims (6)

  1. 　ロータの回転運動を、雄ネジ部材と雌ネジ部材とのネジ結合により直線運動に変換し、この直線運動に基づいて弁本体内に収容された弁体を軸方向に移動させる電動弁であって、
    　前記ネジ結合により直線運動を行う弁軸の外周に張り出して形成されたフランジ部と、
    　前記弁軸の直線運動を前記弁体に伝達する筒状の弁ガイドの上方に形成された環状の天井部と、
    　前記フランジ部と前記天井部との間に配置されたワッシャとを備え、
    　前記フランジ部の最大外径が前記ワッシャの前記フランジ部と接触する面の最大外径よりも大きいことを特徴とする電動弁。     A motor-operated valve that converts rotational movement of a rotor into linear movement by screw connection between a male screw member and a female screw member, and moves a valve body accommodated in the valve body based on this linear movement in the axial direction. ,
    A flange portion that projects from the outer periphery of the valve shaft that performs linear motion by the screw connection;
    An annular ceiling formed above a cylindrical valve guide that transmits the linear motion of the valve shaft to the valve body;
    A washer disposed between the flange portion and the ceiling portion,
    The motor-operated valve characterized in that a maximum outer diameter of the flange portion is larger than a maximum outer diameter of a surface contacting the flange portion of the washer.
  2. 　前記ワッシャの前記フランジ部と接触する面の面積が、前記フランジ部の前記ワッシャと接触する側の面の面積よりも小さいことを特徴とする請求項１に記載の電動弁。 2. The motor-operated valve according to claim 1, wherein an area of a surface of the washer that is in contact with the flange portion is smaller than an area of a surface of the flange portion that is in contact with the washer.
  3. 　前記ワッシャは、前記フランジ部と接触する面の面積よりも前記フランジ部と接触しない側の面の面積が大きくなる断面形状を有することを特徴とする請求項２に記載の電動弁。 3. The motor operated valve according to claim 2, wherein the washer has a cross-sectional shape in which an area of a surface not in contact with the flange portion is larger than an area of a surface in contact with the flange portion.
  4. 　前記ワッシャは、台形状の断面または段差が形成された断面を有することを特徴とする請求項３に記載の電動弁。 The electric valve according to claim 3, wherein the washer has a trapezoidal cross section or a cross section formed with a step.
  5. 　前記フランジ部は、金属製の素材から成り、前記ワッシャは、樹脂製の素材から成ることを特徴とする請求項１～４のいずれか一項に記載の電動弁。 The motor-operated valve according to any one of claims 1 to 4, wherein the flange portion is made of a metal material, and the washer is made of a resin material.
  6. 　前記ワッシャを構成する樹脂製の素材は、フッ素樹脂、ポリアミド、ポリプロピレン、ポリフェニレンサルファイドのいずれかであることを特徴とする請求項５に記載の電動弁。 6. The motor-operated valve according to claim 5, wherein the resin material constituting the washer is any one of fluororesin, polyamide, polypropylene, and polyphenylene sulfide.
PCT/JP2017/000989 2016-03-11 2017-01-13 Electric valve WO2017154347A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780011868.3A CN108700216A (en) 2016-03-11 2017-01-13 Motor-driven valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016048442A JP2017161052A (en) 2016-03-11 2016-03-11 Electric operated valve
JP2016-048442 2016-03-11

Publications (1)

Publication Number Publication Date
WO2017154347A1 true WO2017154347A1 (en) 2017-09-14

Family

ID=59789172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/000989 WO2017154347A1 (en) 2016-03-11 2017-01-13 Electric valve

Country Status (3)

Country Link
JP (1) JP2017161052A (en)
CN (1) CN108700216A (en)
WO (1) WO2017154347A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7244998B2 (en) * 2018-04-04 2023-03-23 株式会社鷺宮製作所 electric valve
JP7328381B2 (en) * 2018-04-04 2023-08-16 株式会社鷺宮製作所 electric valve
JP6790012B2 (en) * 2018-04-04 2020-11-25 株式会社鷺宮製作所 Solenoid valve
JP7011547B2 (en) * 2018-07-06 2022-01-26 株式会社鷺宮製作所 Solenoid valve and refrigeration cycle system
JP7161016B2 (en) * 2018-07-19 2022-10-25 株式会社鷺宮製作所 Electric valve and refrigeration cycle system
JP7144994B2 (en) * 2018-07-19 2022-09-30 株式会社鷺宮製作所 Electric valve and refrigeration cycle system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006064865A1 (en) * 2004-12-15 2006-06-22 Kabushiki Kaisha Saginomiya Seisakusho Electrically operated control valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53116544U (en) * 1977-02-24 1978-09-16
JPS58166118A (en) * 1982-03-29 1983-10-01 大豊工業株式会社 Thrust washer
JPS60154620U (en) * 1984-03-26 1985-10-15 日産ディーゼル工業株式会社 Thrust washer
JP3202879B2 (en) * 1994-09-22 2001-08-27 エヌオーケー株式会社 Friction plate
JP4449207B2 (en) * 2000-11-15 2010-04-14 パナソニック株式会社 Shut-off valve
JP3145048U (en) * 2008-07-11 2008-09-25 株式会社鷺宮製作所 Electric expansion valve and refrigeration cycle
DE202008011371U1 (en) * 2008-08-26 2008-10-23 Acument Gmbh & Co. Ohg Washer, screw or nut with increased coefficient of friction
CN201786904U (en) * 2010-09-29 2011-04-06 田园 Screw gasket
CN203201988U (en) * 2013-03-12 2013-09-18 玉溪大红山矿业有限公司 Sealing structure capable of effectively reducing breakage of mill cylinder bolt

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006064865A1 (en) * 2004-12-15 2006-06-22 Kabushiki Kaisha Saginomiya Seisakusho Electrically operated control valve

Also Published As

Publication number Publication date
CN108700216A (en) 2018-10-23
JP2017161052A (en) 2017-09-14

Similar Documents

Publication Publication Date Title
WO2017154347A1 (en) Electric valve
JP6392685B2 (en) Motorized valve
JP6860988B2 (en) Electric valve
US10352467B2 (en) Direct-action-type electrically-operated valve and assembly method therefor
WO2017169319A1 (en) Motorized valve and refrigeration cycle system
JP6392686B2 (en) Motorized valve
WO2017154346A1 (en) Motor operated valve
WO2017168942A1 (en) Motor-operated valve
CN108343776B (en) Electric valve and refrigeration cycle system
JP6228621B2 (en) Motorized valve
JP6722274B2 (en) Motorized valve and refrigeration cycle system
JP6691064B2 (en) Motorized valve and refrigeration cycle system
JP7481562B2 (en) Motor-operated valve and refrigeration cycle system
WO2017168943A1 (en) Motor-operated valve
JP7141484B2 (en) Electric valve and refrigeration cycle system
JP7141423B2 (en) Electric valve and refrigeration cycle system
JP6680578B2 (en) Motorized valve
WO2018123329A1 (en) Motor-operated valve
JP6945504B2 (en) Electric valve and refrigeration cycle system
JP2018105445A (en) Electrically-operated valve

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17762694

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17762694

Country of ref document: EP

Kind code of ref document: A1