WO2017217114A1 - 電動弁 - Google Patents

電動弁 Download PDF

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Publication number
WO2017217114A1
WO2017217114A1 PCT/JP2017/016022 JP2017016022W WO2017217114A1 WO 2017217114 A1 WO2017217114 A1 WO 2017217114A1 JP 2017016022 W JP2017016022 W JP 2017016022W WO 2017217114 A1 WO2017217114 A1 WO 2017217114A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
fluid
peripheral surface
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/JP2017/016022
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
大樹 中川
宏樹 傳田
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 CN202110648153.7A priority Critical patent/CN113494619B/zh
Priority to CN201780033172.0A priority patent/CN109219716B/zh
Publication of WO2017217114A1 publication Critical patent/WO2017217114A1/ja
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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to an electric valve used for a refrigeration cycle or the like.
  • the performance required for improving the energy saving performance includes suppression of forward / reverse difference in the flow path direction, reduction of variation in flow rate and valve opening point, and the like.
  • the motor-operated valve used in the air conditioner needs to be controlled in consideration of the above-described performance, so that control for realizing energy-saving operation has become very difficult.
  • the motor-operated valve of the present invention for achieving the above object is
  • This is an electric valve that converts the rotational motion of the rotor into a linear motion by screwing the male screw member and the female screw member, and moves the valve element accommodated in the valve body in the axial direction based on this linear motion.
  • the valve body When the valve body is inserted into a valve port, the valve body includes an insensitive portion that forms a minute clearance with the inner peripheral surface of the valve port, A height of the insensitive portion inserted into the valve port is formed to be higher than a height of a screw play at the time of the screwing.
  • the motor operated valve of the present invention is The outer peripheral surface of the insensitive portion and the inner peripheral surface of the valve port are substantially parallel.
  • the motor operated valve of the present invention is The outer peripheral surface of the insensitive portion and the inner peripheral surface of the valve port are parallel to each other.
  • FIG. 1 is a schematic cross-sectional view showing an electric valve according to an embodiment.
  • “upper” and “lower” described in the present specification mean the up and down directions in the state shown in FIG.
  • the “forward direction” described in the present specification means a direction when the fluid is passed from the joint pipe 11 toward the joint pipe 12
  • the “reverse direction” means that the fluid is passed through the joint pipe. It means the direction when passing from the pipe 12 toward the joint pipe 11.
  • the motor-operated valve 100 of this embodiment has a cylindrical valve body 1, and the valve body 1 is formed with a cylindrical cylinder-shaped valve chamber 1A.
  • a joint pipe 11 communicating with the valve chamber 1A from the side surface side is attached to the valve body 1, and a joint pipe 12 is attached to one end portion in the axis L direction of the valve chamber 1A.
  • the valve body 1 is provided with a valve seat member 2 on the valve chamber 1A side of the joint pipe 12.
  • the valve seat member 2 is formed of stainless steel, brass, or the like, and has a valve port 21 having a circular cross-sectional shape that communicates the valve chamber 1A and the joint pipe 12 and a subport 22 having a diameter larger than that of the valve port 21.
  • a support member 3 is attached from the upper part of the valve body 1 to the valve chamber 1A so that the lower end is coupled to the valve seat member 2.
  • the support member 3 is fixed to the valve body 1 by a mounting bracket 3 a provided in the upper opening of the valve body 1.
  • a fixed lower end stopper SD protruding upward is formed at the upper end of the support member 3, and a fixed upper end stopper SU protruding in the radial direction is formed at the outer peripheral edge of the upper end of the support member 3.
  • a female screw 31 coaxial with the axis L of the valve port 21 and its screw hole are formed at the center of the support member 3 and a cylindrical guide hole having a diameter larger than the outer periphery of the screw hole of the female screw 31. 32 is formed.
  • a male screw shaft 4 as a cylindrical valve body holding portion is disposed in the screw hole of the female screw 31 and the guide hole 32.
  • the support member 3 is formed with an insertion hole 34 through which a later-described valve body 5 is inserted.
  • the male screw shaft 4 has a large-diameter portion 41 aligned with the guide hole 32 and a small-diameter portion 42 having a smaller diameter than the large-diameter portion 41.
  • a cylindrical spring accommodating portion 41 a is formed in the large diameter portion 41, and a slide hole 42 a is formed in the center of the small diameter portion 42.
  • the valve body 5 is inserted and inserted from the spring accommodating part 41a to the slide hole 42a.
  • a spring receiver 43 and a coil spring 44 are disposed in the spring accommodating portion 41a, and the coil spring 44 is arranged in a compressed state by welding a spring bracket 45 to the upper end of the spring accommodating portion 41a. It is installed.
  • a male screw 42 b is formed on the outer periphery of the small passage portion 42, and the male screw 42 b is screwed to the female screw 31 of the support member 3.
  • a screw play h is generated in the gap between the screw thread of the male screw 42b and the screw thread of the female screw 31. This screw play will be described in detail later.
  • a flange portion 41b is formed in the large diameter portion 41 of the male screw shaft 4, and a notch portion (not shown) cut in the radial direction is formed in a part of the flange portion 41b.
  • a movable lower end stopper MD is formed on the lower surface of the flange portion 41b.
  • the fitting hole 62a is fitted into the large-diameter portion 41 of the male screw shaft 4, the rotation stopper is engaged with the notch portion of the flange portion 41b of the male screw shaft 4, and the spring bracket 45 is further made large-diameter.
  • the magnet rotor 62 is fixed to the male screw shaft 4 by being press-fitted into the end of the portion 41 and welded.
  • the valve body 5 is made of stainless steel, brass, or the like, and has a lower end tip portion 51, an insensitive portion 52, and a cylindrical rod-shaped rod portion 54.
  • the tip 51 and the insensitive part 52 will be described in detail later.
  • the rotation of the magnet rotor 62 is restricted by the movable lower end stopper MD and the fixed lower end stopper SD coming into contact with each other, so that the valve body 5 is moved to the maximum in the valve closing direction. Even in this state, a slight clearance is formed between the valve body 5 and the valve port 21.
  • valve body 5 is always urged downward by the coil spring 44 through the spring receiver 43.
  • the valve body 5 has a rod portion 54 extending to the valve seat member 2 through the insertion hole 34 of the support member 3. Thereby, the valve body 5 is held by the male screw shaft 4 in a state of being biased in the valve seat direction. Further, the valve body 5 can be displaced relative to the male screw shaft 4 in the direction of the axis L against the urging force of the coil spring 44.
  • This relatively displaceable range is such that the upper end of the rod portion 54 contacts the bottom of the spring accommodating portion 41a and the coil spring 44 extends, and the upper end of the rod portion 54 extends upward from the bottom of the spring accommodating portion 41a. This is a range up to a slightly separated position.
  • the male screw shaft 4 is rotated together with the magnet rotor 62 by the rotation of the magnet rotor 62, and the male screw shaft 4 is axially moved by the screw feeding action of the male screw 42 b of the male screw shaft 4 and the female screw 31 of the support member 3.
  • the tip part 51 and the insensitive part 52 of the valve body 5 move forward and backward with respect to the valve port 21 of the valve seat member 2.
  • the opening degree of the valve port 21 is changed, and for example, the flow rate of the refrigerant flowing from the joint pipe 11 to the joint pipe 12 is controlled.
  • valve port 21 is not completely blocked by the valve body 5, and when the insensitive portion 52 is located in the valve port 21 of the valve seat member 2, the insensitive portion The valve is in the minimum valve open state in which a slight clearance is generated between the valve port 21 and the valve port 21. For this reason, even when the valve body 5 is moved to the maximum in the valve closing direction, the fluid is allowed to flow slightly through the clearance.
  • FIG. 3 is an enlarged view of a main part of the motor-operated valve 100 according to the embodiment.
  • a substantially conical tip 51 having a tapered outer peripheral surface that narrows downward is formed at the lower end of the valve body 5.
  • an insensitive portion 52 having an outer peripheral surface parallel to the inner peripheral surface of the valve port 21 is formed continuously above the distal end portion 51.
  • the height of the insensitive state part 52 is formed so as to be higher than the height of the screw play h at the time of screwing shown in FIG.
  • FIG. 3A is a diagram showing a case where the fluid is passed in the forward direction (lateral to downstream) in the minimum valve open state.
  • FIG.3 (b) is a figure which shows the case where the fluid is made to pass through in the reverse direction (down-> side flow) in the minimum valve open state.
  • FIG. 3A when the fluid is passed in the forward direction, the valve body 5 is pushed downward by a force due to the flow of the fluid and a pressure difference acting on the valve body 5.
  • FIG. 3 (b) when the fluid is passed in the reverse direction, the valve body 5 is lifted upward by the fluid, and the valve body 5 is moved more than when the fluid is passed in the forward direction. The position becomes higher by the screw play h.
  • the insensitive portion 52 has an outer peripheral surface parallel to the inner peripheral surface of the valve port 21 and has a height higher than the screw backlash h, the lowermost end of the insensitive portion 52 and the upper surface of the valve port 21 are provided.
  • the valve body 5 By inserting the valve body 5 into the valve port 21 (see FIG. 3A) to a depth at which the distance H between the two and the screw h becomes greater than the screw backlash h (H> h), the fluid flows in the forward direction in the minimum valve open state. It is possible to prevent the interval of the clearance 23 from being changed between when it is passed through and when it is passed in the opposite direction. Therefore, the flow rate of the fluid passing through the clearance 23 in the minimum valve open state can be made constant.
  • FIG. 4 is a graph showing the relationship of the change in flow rate with respect to the pulse application amount.
  • the horizontal axis of the graph represents the amount of pulses applied to the stepping motor to move the valve body 5
  • the vertical axis of the graph represents the flow rate.
  • the origin of the graph represents the minimum valve open state.
  • the fluid is allowed to pass in the forward direction in the minimum valve open state by forming the height of the insensitive portion 52 higher than the height of the screw play h at the time of screwing. It is possible to suppress a difference in flow rate between when the fluid is passed and when the fluid is passed in the opposite direction. Such a difference in flow rate can be eliminated by forming the outer peripheral surface of the insensitive portion 52 so as to be parallel to the inner peripheral surface of the valve port 21. Thereby, when the fluid is passed in the reverse direction, the problem of energy saving that the energy saving performance is greatly reduced by increasing the flow rate in the minimum valve open state can be solved.
  • the outer peripheral surface of the insensitive portion 52 has a slight taper in the embodiment. Therefore, in other embodiments, portions different from the embodiments will be described in detail, and descriptions of overlapping portions will be omitted.
  • FIG. 5A is an enlarged view of the main part of the motor-operated valve in the minimum valve open state when the fluid is passed in the forward direction (lateral to downstream), and FIG. It is the figure which expanded the principal part of the motor operated valve of the minimum valve open state when letting it pass in the reverse direction (down ⁇ side flow).
  • the inclination angle ⁇ of the outer peripheral surface of the insensitive portion 52 ′ is formed to be smaller than the inclination angle ⁇ of the outer peripheral surface of the tip 51 ( ⁇ ⁇ ).
  • Valve body 1A Valve chamber 2
  • Valve seat member 3 Support member 3a Mounting bracket 4
  • Male screw shaft 5 Valve body 21
  • Valve port 23 Clearance 31
  • Female screw 42b Male screw 51
  • Tip 52 Insensitive part 54
  • Rod part 62 Magnet rotor h Screw backlash H Distance between bottom end of dead zone and top surface of valve port L-axis

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
PCT/JP2017/016022 2016-06-14 2017-04-21 電動弁 Ceased WO2017217114A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110648153.7A CN113494619B (zh) 2016-06-14 2017-04-21 电动阀
CN201780033172.0A CN109219716B (zh) 2016-06-14 2017-04-21 电动阀

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-117840 2016-06-14
JP2016117840A JP6359593B2 (ja) 2016-06-14 2016-06-14 電動弁

Publications (1)

Publication Number Publication Date
WO2017217114A1 true WO2017217114A1 (ja) 2017-12-21

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ID=60664358

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Application Number Title Priority Date Filing Date
PCT/JP2017/016022 Ceased WO2017217114A1 (ja) 2016-06-14 2017-04-21 電動弁

Country Status (3)

Country Link
JP (1) JP6359593B2 (enExample)
CN (2) CN113494619B (enExample)
WO (1) WO2017217114A1 (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111473119A (zh) * 2020-05-12 2020-07-31 桂林市啄木鸟医疗器械有限公司 一种调压阀及压力调节系统
US12072039B2 (en) 2018-12-20 2024-08-27 Danfoss A/S Electric expansion valve
US12117215B2 (en) 2018-12-20 2024-10-15 Danfoss A/S Valve having a motor arranged inside a tube having sections with different diameters

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111954776B (zh) * 2018-03-26 2022-07-26 株式会社不二工机 电动阀
JP6978391B2 (ja) * 2018-08-31 2021-12-08 株式会社鷺宮製作所 電動弁及び冷凍サイクルシステム
JP7440107B2 (ja) * 2022-01-19 2024-02-28 株式会社不二工機 電動弁
JP7763808B2 (ja) * 2023-05-17 2025-11-04 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06323447A (ja) * 1993-05-11 1994-11-25 Taikisha Ltd 流量制御弁
JP2014142136A (ja) * 2013-01-24 2014-08-07 Pacific Ind Co Ltd 電動膨張弁

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CN87209716U (zh) * 1987-06-26 1988-07-27 后勤工程学院 电磁阀开关主量孔节油装置
JP3817071B2 (ja) * 1998-07-06 2006-08-30 株式会社鷺宮製作所 電動式コントロールバルブ
JP4812601B2 (ja) * 2006-01-05 2011-11-09 株式会社不二工機 電動弁
JP4762018B2 (ja) * 2006-03-23 2011-08-31 株式会社不二工機 電動弁
JP2008169910A (ja) * 2007-01-11 2008-07-24 Fuji Koki Corp 電動弁
CN201121713Y (zh) * 2007-11-06 2008-09-24 浙江三花股份有限公司 一种阀结构和电子膨胀阀
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
JP5563862B2 (ja) * 2010-03-30 2014-07-30 株式会社不二工機 電動弁
CN103968620B (zh) * 2013-01-28 2016-03-23 珠海格力电器股份有限公司 电子膨胀阀及具有其的制冷装置
JP6676432B2 (ja) * 2016-03-28 2020-04-08 株式会社不二工機 電動弁及びその組立方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06323447A (ja) * 1993-05-11 1994-11-25 Taikisha Ltd 流量制御弁
JP2014142136A (ja) * 2013-01-24 2014-08-07 Pacific Ind Co Ltd 電動膨張弁

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12072039B2 (en) 2018-12-20 2024-08-27 Danfoss A/S Electric expansion valve
US12117215B2 (en) 2018-12-20 2024-10-15 Danfoss A/S Valve having a motor arranged inside a tube having sections with different diameters
CN111473119A (zh) * 2020-05-12 2020-07-31 桂林市啄木鸟医疗器械有限公司 一种调压阀及压力调节系统

Also Published As

Publication number Publication date
JP2017223263A (ja) 2017-12-21
JP6359593B2 (ja) 2018-07-18
CN109219716A (zh) 2019-01-15
CN109219716B (zh) 2021-07-02
CN113494619A (zh) 2021-10-12
CN113494619B (zh) 2023-07-25

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