WO2017154346A1 - Soupape actionnée par moteur - Google Patents

Soupape actionnée par moteur Download PDF

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Publication number
WO2017154346A1
WO2017154346A1 PCT/JP2017/000988 JP2017000988W WO2017154346A1 WO 2017154346 A1 WO2017154346 A1 WO 2017154346A1 JP 2017000988 W JP2017000988 W JP 2017000988W WO 2017154346 A1 WO2017154346 A1 WO 2017154346A1
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WO
WIPO (PCT)
Prior art keywords
valve
valve body
motor
guide member
operated
Prior art date
Application number
PCT/JP2017/000988
Other languages
English (en)
Japanese (ja)
Inventor
珠実 田邊
大樹 中川
元康 石黒
雄希 北見
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 CN201780011658.4A priority Critical patent/CN108700215A/zh
Publication of WO2017154346A1 publication Critical patent/WO2017154346A1/fr

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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

Definitions

  • the present invention relates to an electric valve used for a refrigeration cycle or the like.
  • an electric valve used for a large packaged air conditioner or refrigerator is known (for example, Patent Document 1).
  • this electric valve as shown in FIG. 10, when the stepping motor is driven and the rotor 303 is rotated, the valve body 314 is cylindrically guided through the moving shaft 302 by the screw feeding operation of the female screw 331a and the male screw 321a. It moves in the direction of the axis L along 313. Thereby, the valve body 314 is controlled to open and close, and the flow rate of the refrigerant flowing in from the pipe joint 311 and flowing out from the pipe joint 312 is controlled.
  • the valve body 314 has a structure in which the outer wall surface thereof is guided by the inner wall surface of the cylindrical guide 313 to be opened and closed.
  • the motor-operated valve is completed with the axis of the body 314 deviated from the axis of the axis L, when the valve body 314 is in the closed state, the valve seat 314 is in a single-contact state with the lower end of the valve body 314 tilted.
  • a gap may occur between the lower end portion of the valve body 314 and the valve seat member 315 due to contact with the member 315.
  • fluid such as a refrigerant is likely to leak.
  • An object of the present invention is to provide an electric valve provided with a valve body that can reliably prevent fluid leakage in a valve-closed state.
  • 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 valve body guide member for guiding the movement of the valve body in the axial direction;
  • a seal member interposed between the valve element guide member and the valve element;
  • the seal member has a structure that prevents the valve element and the valve element guide member from directly contacting each other at least in a valve-closed state.
  • the valve body is not removed in the clearance generated between the valve body and the valve body guide member. Since it can swing or move in the radial direction, the axis of the valve element can be aligned with the axis of the motor-operated valve. Furthermore, by aligning the valve body so that there is no gap between the lower end of the valve body and the valve seat member in the closed state, it is ensured that a medium such as refrigerant leaks in the closed state. Can be prevented.
  • the motor operated valve of the present invention is A taper portion in which at least an inner wall surface is inclined outward is formed at the lower end portion of the valve element guide member.
  • the valve body rise is not easily inhibited by the valve body guide member, and the valve body is easily accommodated in the valve body guide member.
  • the seal member can be easily inserted into the small-diameter portion of the valve element guide member without using a tool such as a jig, so that the workability when assembling the electric valve is improved. Man-hours related to work can be reduced.
  • the motor operated valve of the present invention is The valve body is characterized in that an inclined portion whose outer wall surface is inclined outward is formed downward.
  • the motor operated valve of the present invention is The seal member is mounted on either the valve body or the valve body guide member before assembling the electric valve.
  • FIG. 4 is a cross-sectional view of a conventional motor-operated valve disclosed in Japanese Patent Laid-Open No. 2014-43949.
  • FIG. 5 is an enlarged cross-sectional view of a main part of a conventional motor-operated valve disclosed in Japanese Patent Laid-Open No. 2014-43949.
  • FIG. 1 is a cross-sectional view showing a motor-operated valve 2 according to the first embodiment.
  • “upper” or “lower” is defined in the state of FIG. That is, the rotor 4 is located above the valve member 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 6 f of the valve shaft holder 6 is fixed between the upper surface of the flange portion 72 c 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 is disposed below the valve shaft 41 so as to be slidable with respect to the through hole 6 h of the valve shaft holder 6.
  • 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.
  • a flange 41 b is further formed below the valve shaft 41.
  • valve shaft 41 is inserted into the through hole 18a of the valve guide 18 so as to be rotatable with respect to the valve guide 18 and displaceable in the radial direction. It arrange
  • valve shaft 41 is inserted through the through hole 18 a and is arranged so that the upper surface of the flange portion 41 b faces the ceiling portion 21 of the valve guide 18.
  • the flange 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 member 17 is obtained.
  • a protruding portion 41c is formed at the lower end portion of the valve shaft 41 so as to protrude below the flange portion 41b and make point contact with a spring receiver 35 described later (see FIG. 2).
  • the protruding portion 41c functions as a fulcrum when the valve member 17 swings in the process of shifting from the closed state to the open state.
  • the valve member 17 can also move in the radial direction with respect to the valve shaft 41.
  • a washer 70 is installed between the ceiling 21 of the valve guide 18 and the flange 41b of the valve shaft 41.
  • the washer 70 is preferably a metal washer having a highly slippery surface, a highly slippery resin washer such as a fluororesin, or a metal washer having a highly slippery resin coating.
  • a through hole is formed in the center of the washer 70.
  • a compressed valve spring 27 and a spring receiver 35 are accommodated in the valve guide 18.
  • the upper end of the spring receiver 35 is in point contact with the protrusion 41c of the valve shaft 41 as described above.
  • FIG. 2 is an enlarged cross-sectional view of a main part of the motor-operated valve 2 according to the first embodiment.
  • a valve member 17 and a valve body guide member 72 that guides the movement of the valve member 17 in the axial direction are arranged inside the valve body 30, and the valve member 17, the valve body guide member 72, A seal member 48 is interposed between the two.
  • the valve member 17 includes a valve body holding portion 17A and a valve body portion 17B.
  • the valve body holding portion 17A includes a connecting portion 17A1 in which a vertical hole portion 17b is formed as a pressure equalizing path, and a head portion 17A2 in which a lateral conduction hole 17c is formed as a pressure equalizing path. Yes.
  • the pressure in the valve port 16 (in the second pipe joint 15) is guided to the back pressure chamber 28 through the hole 17b and the conduction hole 17c which are pressure equalization paths.
  • the valve body 17B is formed with a receiving space 17a for receiving the connecting portion 17A1 in the vertical direction.
  • annular packing 48a having an L-shaped cross section is provided between the lower end surface 17g of the head portion 17A2 of the valve body holding portion 17A and the upper end surface 17h of the valve body portion 17B.
  • An annular seal member 48 formed with the reinforcing plate 48b interposed therebetween is disposed.
  • the valve member 17 can be swung with the protruding portion 41c of the valve shaft 41 as a fulcrum, or can be horizontally moved in the radial direction, so that the shaft core of the valve member 17 can be easily aligned with the shaft core of the motor-operated valve 2. be able to. Accordingly, the valve member 17 can be aligned so that no gap is generated between the lower end portion of the valve member 17 and the valve seat member 30A in the valve-closed state.
  • the valve body guide member 72 is a cylindrical body through which the inside penetrates, and has a flange portion 72c located at the uppermost position, a large diameter portion 72a below the flange portion 72c, and a small diameter portion 72b below the press portion. Is formed by.
  • the diameter on the outer peripheral surface side of the large diameter portion 72 a of the valve body guide member 72 is slightly larger than the diameter on the inner peripheral surface side of the valve body 30. That is, by setting the dimensions in this manner, the seal member 48 can be closely locked to the inner peripheral surface of the valve body guide member 72 when the valve body guide member 72 is combined with the valve body 30.
  • the motor-operated valve 2 when a drive pulse signal is given to the stepping motor, the rotor 4 rotates according to the number of pulses, and the valve shaft 41 rotates accordingly, and the male screw 41 a of the valve shaft 41 is fixedly arranged.
  • the valve shaft 41 moves in the axial direction while rotating by the screw coupling A formed by the female screw 6d of the valve shaft holder 6.
  • valve shaft 41 The downward movement (movement in the valve closing direction) of the valve shaft 41 is transmitted to the valve guide 18 by the contact of the spring receiver 35, the flange 41b, the washer 70, and the ceiling part 21, and the valve guide 18 and the valve member 17 are moved downward. Is done.
  • valve member 17 at the time of transition from the valve closed state to the valve open state is in a state in which the valve member 17 is relatively easy to swing because it is affected by the pressure of the fluid flowing in from the first pipe joint 12 or the like. Since the valve member 17 is guided by the valve body guiding portion 72 after the valve has been moved upward and accommodated in the valve body guiding portion 72, the valve member 17 is hardly affected by pressure due to fluid or the like, and the valve member 17 is difficult to swing. Become. Thus, the operability of the valve member 17 is improved by guiding the valve member 17 by the valve body guide portion 72.
  • the seal member 48 is interposed between the valve member 17 and the valve element guide member 72, and the valve member 17 and the valve element guide member 72 are in direct contact with each other. By preventing this, it is possible to reliably prevent a fluid such as a refrigerant from leaking when the valve is closed.
  • valve shaft 41 and the valve member 17 are connected via the valve guide 18
  • the motor-operated valve 2 includes the valve guide 18.
  • the valve member 17 may be formed integrally with the valve shaft 41. Also in this case, the valve member 17 can swing or move horizontally in the radial direction due to the clearance formed between the male screw 41a and the female screw 6d.
  • the L-shapes are acute angles on the upper side of the annular packing 48a disposed on the upper side and on the lower side of the annular packing 48a disposed on the lower side, respectively. It is preferable that a leaf spring for biasing the annular packing is disposed on the outside so as not to be too much.
  • the seal member 48 may be composed of only an annular packing (so-called O-ring) having a substantially circular cross section, or as shown in FIG.
  • a composite sealing material in which an O-ring 48d and an annular packing 48f having a C-shaped cross section made of a highly lubricating resin material such as PTFE may be used.
  • a tapered portion is formed at the lower end portion of the small-diameter portion 72b of the valve element guide member 72 according to the first embodiment. Therefore, description of the same configuration as that of the first embodiment is omitted, and only different portions will be described.
  • FIG. 5 is an enlarged cross-sectional view of a main part of the motor-operated valve according to the second embodiment.
  • a tapered portion 72 f is formed at the lower end portion of the small diameter portion 72 b of the valve element guide member 72 so as to incline outwardly downward.
  • FIG. 5 shows a case where the tapered portion 72f is formed without changing the thickness of the small diameter portion 72b, but only the thickness of the inner wall surface of the small diameter portion 72b is gradually reduced downward. Only the inner wall surface may be inclined outwardly downward.
  • FIG. 5 shows a case where the tapered portion 72f is formed without changing the thickness of the small diameter portion 72b, but only the thickness of the inner wall surface of the small diameter portion 72b is gradually reduced downward. Only the inner wall surface may be inclined outwardly downward.
  • valve body portion 17 ⁇ / b> B is a cylindrical member in which the upper portion 171 has a smaller diameter than the lower portion 172, and between the upper portion 171 and the lower portion 172, An inclined portion 173 that is inclined outward is formed.
  • the operability of the valve member 17 can be ensured by forming the tapered portion 72f at the lower end portion of the small diameter portion 72b of the valve element guide member 72. Specifically, it is possible to prevent the valve member 17 from being hindered by the valve body guide member 72 in the process in which the valve member 17 transitions from the closed state to the open state. It becomes easy to be accommodated in the body guide member 72.
  • valve body guide member 72 may be hindered by the valve body guide member 72 from moving upward from the closed valve state to the open valve state.
  • the valve member 17 can be easily accommodated in the small diameter portion 72b.
  • the motor-operated valve can be easily assembled. This effect will be described below with reference to FIG.
  • FIG. 6A is a view showing the relationship between the valve body guide member 72, the valve member 17, and the seal member 48 before assembling the electric valve.
  • the outer diameter Dp of the seal member 48 is larger than the inner diameter Di of the small-diameter portion 72b of the valve body guide member 72.
  • the inner diameter Dt of the lower end of the tapered portion 72f of the valve element guide member 72 is formed to be larger than the outer shape Dp of the seal member 48.
  • the diameter increases in the order of the inner diameter Di of the small diameter portion 72b of the valve body guide member 72 ⁇ the outer shape Dp of the seal member 48 ⁇ the inner diameter Dt of the lower end of the tapered portion 72f of the valve body guide member 72.
  • the tapered portion 72f at the lower end portion of the valve body guide member 72, it is possible to prevent the valve member 17 from being hindered by the valve body guide member 72. It becomes easy to be accommodated in the body guide member 72. Further, since the seal member 48 can be easily inserted into the small diameter portion 72b of the valve body guide member 72 without using a tool such as a jig, the workability when assembling the motor-operated valve is improved, and the work is related to the work. Man-hours can be reduced. In addition, since an instrument such as a jig is not used, there is no fear of damaging the seal member 48 with the instrument when assembling the electric valve.
  • the seal member 48 disposed on the valve member 17 side in the first embodiment is disposed on the valve element guide member 72 side. Further, an inclined portion is formed on the outer peripheral surface of the valve member 17. Therefore, description of the same configuration as that of the first embodiment is omitted, and only different portions will be described.
  • FIG. 7 is a cross-sectional view showing a motor-operated valve according to the third embodiment
  • FIG. 8 is an enlarged cross-sectional view of a main part thereof.
  • the lower end portion of the small diameter portion 72b of the valve body guide member 72 is formed with a bent portion 72k bent inside the valve body guide member 72, and the seal member 48 is formed on the bent portion 72k. Is arranged.
  • an inclined portion 173 is formed on the outer peripheral surface of the valve member 17 so as to be inclined outwardly downward.
  • FIG. 7 and 8 show an example in which a composite sealing material in which an O-ring 48d and an annular packing 48f having a C-shaped cross section are combined is used as the sealing member 48, the sealing member 48 is a composite sealing material.
  • the material There is no limitation to the material.
  • a sealing material composed only of an O-ring may be employed, or a material in which an annular reinforcing plate 48b is sandwiched between annular packings 48a having an L-shaped cross section (see FIG. 2) may be employed.
  • the seal member 48 is not disposed on the valve member 17 side, but is easily disposed on the bent portion 72k that is bent on the inner side of the valve body guide member 72.
  • a seal member 48 can be mounted in the motorized valve.
  • FIG. 9A is a view showing the relationship between the valve body guide member 72, the valve member 17, and the seal member 48 before assembling the electric valve.
  • the inner diameter Dp of the sealing member 48 is larger than the upper diameter Dt of the valve member 17, and the sealing member The lower diameter Dr of the valve member 17 is larger than the inner diameter Dp of 48.
  • the diameter increases in the order of the diameter Dt of the upper part of the valve member 17 ⁇ the inner diameter Dp of the seal member 48 ⁇ the diameter Dr of the lower part of the valve member 17.
  • the valve shaft 41 is inserted into the valve shaft holder 6 and penetrated through the cylindrical small diameter portion 6a, and then the valve shaft 41 is rotated to 41 a and a female screw 6 d formed on the inner periphery of the cylindrical small diameter portion 6 a of the valve shaft holder 6 are screwed together so that the upper portion of the valve member 17 is positioned in the seal member 48.
  • the valve member 17 can be easily inserted into the valve element guide member 72 without using a tool such as a jig.
  • the workability at the time of assembling the valve is improved, and the number of man-hours related to the work can be reduced.
  • an instrument such as a jig is not used, there is no fear of damaging the seal member 48 with the instrument when assembling the electric valve.
  • the seal member 48 is interposed between the valve member 17 and the valve body guide member 72.
  • the valve member 17 and the valve element guide member 72 are prevented from directly contacting each other. Therefore, the valve member 17 can swing or horizontally move in the radial direction, and the valve member 17 is aligned so that no gap is generated between the lower end portion of the valve member 17 and the valve seat member 30A. Easy to do. Therefore, it is possible to reliably prevent a fluid such as a refrigerant from leaking.
  • the motor-operated valve 2 may not include the valve guide 18, and the valve member 17 may be formed integrally with the valve shaft 41. Even in this case, the valve member 17 can be swung or horizontally moved in the radial direction by the clearance formed between the male screw 41a and the female screw 6d.
  • the case where the hole 17b and the conduction hole 17c are provided in the valve member 17 as the pressure equalizing path is described as an example, but the pressure equalizing path is not necessarily provided in the valve member 17. 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.
  • Valve shaft holder 6d Female thread 11 Valve chamber 13 Guide 14 Valve body 16 Valve port 17 Valve member 17A Valve body holding portion 17A1 Connection portion 17A2 Head portion 17B Valve body portion 17a Receiving space 17b Hole portion 17c Conduction hole 17g Lower end surface 17h Upper end surface 18 Valve guide 21 Ceiling 27 Valve spring 28 Back pressure chamber 30 Valve body 30A Valve seat member 41 Valve shaft 41a Male thread 48 Seal member 48a Annular packing 48b Reinforcement plate 48d Ring 48f Annular packing 52 Guide support 72 Valve body guide member 72a Large diameter portion 72b Small diameter portion 72c Flange portion 72f Taper portion 83 Valve shaft holder chamber 171 Upper portion 172 Lower portion 173 Inclined portion

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

Abstract

[Problème] L'invention a pour objet de pouvoir empêcher efficacement une fuite de fluide dans un état de soupape fermée. [Solution] selon l'invention, une soupape actionnée par moteur, qui convertit un mouvement de rotation d'un rotor en un mouvement linéaire par le biais d'une connexion filetée d'un organe fileté mâle et d'un organe fileté femelle et qui déplace une soupape dans un corps principal de soupape dans la direction axiale sur la base du mouvement linéaire, comprend un organe de guidage de soupape qui guide le mouvement dans la direction axiale de la soupape et un organe de joint qui est interposé entre l'organe de guidage de soupape et la soupape, et qui présente une structure qui empêche le contact direct entre la soupape et l'organe de guidage de soupape par le biais de l'organe de joint au moins dans l'état fermé de la soupape.
PCT/JP2017/000988 2016-03-11 2017-01-13 Soupape actionnée par moteur WO2017154346A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780011658.4A CN108700215A (zh) 2016-03-11 2017-01-13 电动阀

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-048441 2016-03-11
JP2016048441A JP2017161051A (ja) 2016-03-11 2016-03-11 電動弁

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WO2017154346A1 true WO2017154346A1 (fr) 2017-09-14

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CN (1) CN108700215A (fr)
WO (1) WO2017154346A1 (fr)

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CN109723877B (zh) 2017-10-27 2021-06-18 浙江三花制冷集团有限公司 一种电动阀
CN109723831A (zh) * 2017-10-27 2019-05-07 浙江三花制冷集团有限公司 一种电动阀及其制造方法
CN109723826B (zh) * 2017-10-27 2023-02-28 浙江三花商用制冷有限公司 一种电动阀
JP6864652B2 (ja) * 2018-06-19 2021-04-28 株式会社鷺宮製作所 電動弁および冷凍サイクルシステム
US11959561B2 (en) * 2019-03-13 2024-04-16 Zhejiang Dunan Artificial Environment Co., Ltd. Electronic expansion valve and refrigeration system
JP7273198B2 (ja) * 2019-06-28 2023-05-12 浙江三花智能控制股▲ふん▼有限公司 電子膨張弁
JP7097093B2 (ja) * 2020-05-28 2022-07-07 株式会社不二工機 電動弁
JP7453091B2 (ja) * 2020-08-18 2024-03-19 株式会社鷺宮製作所 電動弁および冷凍サイクルシステム

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CN201110416Y (zh) * 2007-10-31 2008-09-03 温州帝威斯感应洁具有限公司 轻触式防堵除垢延时自闭节水装置
CN202182222U (zh) * 2011-07-28 2012-04-04 杭州良工阀门有限公司 一种活塞式平衡型自力式压力调节阀
JP5860429B2 (ja) * 2013-03-29 2016-02-16 株式会社鷺宮製作所 流量制御弁
JP2015038368A (ja) * 2013-08-19 2015-02-26 株式会社鷺宮製作所 流量制御弁
JP6333086B2 (ja) * 2014-06-26 2018-05-30 株式会社不二工機 三方電磁弁
JP6214488B2 (ja) * 2014-07-18 2017-10-18 株式会社鷺宮製作所 電動弁
CN204083264U (zh) * 2014-08-27 2015-01-07 杭州江南控制阀有限公司 一种用活塞作为平衡元件的单座调节阀
JP6392685B2 (ja) * 2015-03-06 2018-09-19 株式会社鷺宮製作所 電動弁
JP6860988B2 (ja) * 2016-07-19 2021-04-21 株式会社鷺宮製作所 電動弁

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CN108700215A (zh) 2018-10-23

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