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WO2017154347A1 - Électrovanne - Google Patents

Électrovanne 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
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/000989
Other languages
English (en)
Japanese (ja)
Inventor
雄希 北見
大樹 中川
元康 石黒
珠実 田邊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saginomiya Seisakusho Inc
Original Assignee
Saginomiya Seisakusho Inc
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 Saginomiya Seisakusho Inc filed Critical Saginomiya Seisakusho Inc
Priority to CN201780011868.3A priority Critical patent/CN108700216A/zh
Publication of WO2017154347A1 publication Critical patent/WO2017154347A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

Le problème décrit par la présente invention est de proposer une électrovanne ayant un faible couple de frottement et pouvant être actionnée avec une petite force d'entraînement et une faible puissance électrique. La solution de la présente invention porte sur une électrovanne permettant de convertir le mouvement rotatif d'un rotor en mouvement linéaire par l'accouplement fileté d'un élément fileté mâle avec un élément fileté femelle et le déplacement d'un corps de vanne logé dans un corps de vanne principal dans la direction axiale au moyen dudit mouvement linéaire : l'électrovanne étant pourvue d'une section de bride qui est conçue pour s'étendre depuis la circonférence d'une tige de vanne et qui se déplace de manière linéaire en conséquence de l'accouplement fileté, une section de plafond circulaire qui est formée sur le dessus d'un gui de vanne cylindrique et qui transmet le mouvement linéaire de la tige de vanne au corps de vanne, et une rondelle disposée entre la section de bride et la section de plafond ; et le diamètre externe maximum de la section de bride est supérieur au diamètre externe maximum de la surface de la rondelle qui entre en contact avec la section de bride.
PCT/JP2017/000989 2016-03-11 2017-01-13 Électrovanne Ceased WO2017154347A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780011868.3A CN108700216A (zh) 2016-03-11 2017-01-13 电动阀

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016048442A JP2017161052A (ja) 2016-03-11 2016-03-11 電動弁
JP2016-048442 2016-03-11

Publications (1)

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

Family

ID=59789172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/000989 Ceased WO2017154347A1 (fr) 2016-03-11 2017-01-13 Électrovanne

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JP (1) JP2017161052A (fr)
CN (1) CN108700216A (fr)
WO (1) WO2017154347A1 (fr)

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
JP7244998B2 (ja) * 2018-04-04 2023-03-23 株式会社鷺宮製作所 電動弁
JP6790012B2 (ja) * 2018-04-04 2020-11-25 株式会社鷺宮製作所 電動弁
JP7328381B2 (ja) * 2018-04-04 2023-08-16 株式会社鷺宮製作所 電動弁
JP7011547B2 (ja) * 2018-07-06 2022-01-26 株式会社鷺宮製作所 電動弁及び冷凍サイクルシステム
JP7144994B2 (ja) * 2018-07-19 2022-09-30 株式会社鷺宮製作所 電動弁及び冷凍サイクルシステム
JP7161016B2 (ja) * 2018-07-19 2022-10-25 株式会社鷺宮製作所 電動弁及び冷凍サイクルシステム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006064865A1 (fr) * 2004-12-15 2006-06-22 Kabushiki Kaisha Saginomiya Seisakusho Vanne de controle actionnee electriquement

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JPS53116544U (fr) * 1977-02-24 1978-09-16
JPS58166118A (ja) * 1982-03-29 1983-10-01 大豊工業株式会社 回り止め機構のないフローティングタイプのスラストワッシャ
JPS60154620U (ja) * 1984-03-26 1985-10-15 日産ディーゼル工業株式会社 スラストワツシヤ
JP3202879B2 (ja) * 1994-09-22 2001-08-27 エヌオーケー株式会社 摩擦板
JP4449207B2 (ja) * 2000-11-15 2010-04-14 パナソニック株式会社 遮断弁
JP3145048U (ja) * 2008-07-11 2008-09-25 株式会社鷺宮製作所 電動膨張弁及び冷凍サイクル
DE202008011371U1 (de) * 2008-08-26 2008-10-23 Acument Gmbh & Co. Ohg Beilagscheibe, Schraube oder Mutter mit erhöhtem Reibbeiwert
CN201786904U (zh) * 2010-09-29 2011-04-06 田园 螺丝垫片
CN203201988U (zh) * 2013-03-12 2013-09-18 玉溪大红山矿业有限公司 一种能有效减少磨机筒体螺栓断裂的密封结构

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006064865A1 (fr) * 2004-12-15 2006-06-22 Kabushiki Kaisha Saginomiya Seisakusho Vanne de controle actionnee electriquement

Also Published As

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

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