WO2003023265A1 - Soupape de commande - Google Patents

Soupape de commande Download PDF

Info

Publication number
WO2003023265A1
WO2003023265A1 PCT/JP2002/009207 JP0209207W WO03023265A1 WO 2003023265 A1 WO2003023265 A1 WO 2003023265A1 JP 0209207 W JP0209207 W JP 0209207W WO 03023265 A1 WO03023265 A1 WO 03023265A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
valve stem
stem
screw
large lead
Prior art date
Application number
PCT/JP2002/009207
Other languages
English (en)
Japanese (ja)
Inventor
Toru Yonezawa
Original Assignee
Chiyoda Kuchokiki Co., Ltd.
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 Chiyoda Kuchokiki Co., Ltd. filed Critical Chiyoda Kuchokiki Co., Ltd.
Publication of WO2003023265A1 publication Critical patent/WO2003023265A1/fr

Links

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 a control valve such as an electric expansion valve mainly interposed in a refrigerant pipe of an air conditioner or a refrigerator.
  • valve V has been disclosed in Japanese Patent Publication No. Hei 3-330750, and as shown in FIG. 9, a conical valve head H is seated on a valve seat Z provided on a valve housing D. Equipped with a stem N to be separated.
  • the valve stem N passes through the inside of an externally threaded pipe M provided upright in the valve housing D, and the rear end thereof is inserted into the transverse wall W of the rotor R of the stepping motor S and is stopped by the retaining ring Y. Between the stem N and the transverse wall W, a stem pushing spring Q is interposed.
  • a female screw pipe F integrated with the rotor R is screwed, and the forward and reverse rotation of the rotor R at a predetermined angle moves the valve stem N forward and backward.
  • the flow rate is controlled by changing the opening area between them.
  • a movable stopper K which is rotated by a standing rod J on a rotor R, is moved along a spiral guide G wound around a hanging shaft T of a case upper lid U, and a lower locking portion B and an upper locking portion E are moved. This restricts the rotation range of the rotor R and thus the reciprocation range of the valve stem N.
  • a structure is adopted in which the valve stem is directly pressed to the valve seat. It is another object of the present invention to provide a control valve which can be satisfactorily reversed, can simplify the entire configuration, and can eliminate the chattering phenomenon when the valve is closed.
  • a control valve including a valve stem that moves forward and backward in conjunction with a rotary driving body and seats and separates a valve head on a valve seat provided in a valve housing.
  • the rotation driving body and the valve stem are directly connected via a large lead screw having a large lead to a screw diameter, and a rotation preventing body that Plih rotates the valve stem accompanying rotation of the rotation driving body. Intervened.
  • the valve stem can be pressed directly against the valve seat by the rotary driver, and the chattering phenomenon at the time of closing the valve can be eliminated. Also, the valve stem is pressed against the valve seat in a state in which its rotation is blocked by the rotation stopper, so that the valve head can be prevented from penetrating into the valve seat. In addition, the large lead screw prevents the screw thread from being crushed, and the valve opening due to reverse rotation can be improved. Furthermore, since the valve stem is directly driven, there is no need for a special mechanism such as a movable stopper for restricting the advance / retreat range of the valve stem, which is conventionally required, and the configuration can be simplified.
  • the invention according to claim 2 is characterized in that, while adopting a large lead screw, the valve stem is biased in the axial direction in order to reduce fluctuations in the flow path opening area when the valve is opened during flow control or the like.
  • an elastic member for stabilizing the behavior when the valve stem is separated from the valve seat is interposed.
  • the gap between the rotary driving body and the valve stem due to the large lead screw is kept almost constant, and the movement and vibration of the valve stem due to the pressure change between the inlet and the outlet of the valve seat can be suppressed.
  • the change in the flow channel area can be reduced. Also, it is possible to reduce the occurrence of abnormal noise due to the vibration of the valve stem when the refrigerant passes.
  • FIG. 1 is a longitudinal sectional view of a first embodiment of the control valve of the present invention.
  • FIG. 2 is a perspective view of the first embodiment viewed from below.
  • FIG. 3 is an assembled view of the first embodiment as viewed from above.
  • FIG. 4 is an explanatory diagram of a large lead screw according to the first embodiment.
  • FIG. 5 is a longitudinal sectional view of a second embodiment of the control valve of the present invention.
  • FIG. 6 is a perspective view of the second embodiment viewed from below.
  • FIG. 7 is an assembled view of the second embodiment viewed from above.
  • FIG. 8 is an explanatory diagram of a large lead screw according to the second embodiment.
  • Fig. 9 is a longitudinal sectional view of a conventional control valve.
  • FIG. 1 shows an example of application to a large-capacity motor-operated valve, in which a first connection pipe 11 and a second connection pipe 12 are orthogonally connected to a valve housing 1.
  • the first connection pipe 11 is connected to the outdoor unit
  • the second connection pipe 12 is connected to the indoor unit.
  • a valve seat 2 is provided inside the valve housing 1, and an integrated Udle-shaped valve head 4 faces the tip of a valve stem 3 having a square pole shape. Note that the valve head 4 does not have to be a needle type.
  • the flow path opening area is changed by moving the valve stem 3 back and forth so that the flow rate can be controlled continuously from 0 when the valve is closed to fully open. .
  • the valve stem 3 is linked to a magnet rotor 61 of a stepping motor 6 with a planetary gear reducer 5 interposed therebetween.
  • the planetary gear reducer 5 is housed in a reducer case 7 composed of a lower lid 71 attached to the valve housing 1 and an upper lid 72 placed on the lower lid 71.
  • the magnet rotor 61 is housed in a rotor case 62 fitted into the upper lid 72.
  • a stator coil 63 is fitted on the outside of the rotor case 62.
  • the motor shaft 60 is supported by an upper bearing 64 and a lower bearing 65.
  • the planetary gear reducer 5 includes a first sun gear S 1 integrally connected to a motor shaft 60, the first sun gear S 1, and an internal gear D 0 fixed to the outside.
  • the second sun gear S 2 which rotates to zero, three second planet gears U 2, U 2, U 2, which mesh with the second sun gear S 2 and the outer internal gear D 0. It has a second carrier R2 that holds the gear.
  • a boss 8 that is screwed to the valve stem 3 is integrated with a lower portion of the second carrier R2 serving as a rotary driving body that drives the valve stem 3.
  • the square pole portion of the valve stem 3 passes through the square hole 90 formed in the square-shaped detent body 9 with a bottom that is press-fit into the valve housing 1, and the valve stem 3 rotates with the rotation of the boss 8. In order to prevent them.
  • the detent structure may use a polygon other than a square.
  • a panel receiver 91 is locked at an intermediate portion of the valve stem 3, and an elastic member 92 made of a compression panel is interposed between the rotation stopper 9 on the valve housing 1 side, and the valve stem 3 is axially upward. It biases and stabilizes the behavior when the valve stem 3 separates from the valve seat 2.
  • the gears S1, Ul, Rl, S2, U2, and R2 of the planetary gear reducer 5 are tightly assembled in contact with each other while improving the axial direction.
  • a thrust plate 93 that receives the lower end of the motor shaft 60 is provided on the upper surface of the second carrier R2.
  • the valve stem 3 and the boss 8 have a large screw lead (r) with respect to the circumferential length (q) of the average screw diameter, that is, a screw gradient (rZq) of 8% or more. It is directly connected via large lead screws 30 and 80.
  • a large lead male screw 30 is provided on the valve stem 3 side and a large lead female screw 80 is provided on the boss 8 side, that is, on the rotary driver side, the relationship between male and female may be reversed.
  • FIG. 5 shows an example of application to a direct-acting motor-operated valve without a reduction gear.
  • a first connection pipe 11 and a second connection pipe 12 are orthogonally connected.
  • the first connection pipe 11 is connected to the outdoor unit side
  • the second connection pipe 12 is connected to the indoor unit side.
  • a valve seat 2 is provided inside the valve housing 1, and a needle-shaped valve head 4 integrated with the end of a valve rod 3 having a square pole faces. Note that the valve head 4 does not have to be a needle type.
  • the flow path opening area is changed by the advance and retreat of the valve stem 3, so that the flow rate can be controlled continuously from 0 when the valve is closed to fully open.
  • the valve stem 3 is directly linked to the magnet rotor 6 10 of the stepping motor 6 constituting a rotary drive.
  • the magnet rotor 6100 is housed in a rotor case 67 that covers the lower flange 66 attached to the valve housing 1.
  • a stator coil 63 is fitted on the outside of the rotor case 67.
  • the upper portion of the shaft hole 6200 provided in the center of the magnet rotor 6100 is received in a stepped cylindrical upper bearing 640.
  • the lower part of the magnet rotor 6100 is thrust supported on the front plate 6500. As shown in Figs.
  • the square pole portion of the valve stem 3 is a square hole of the block-shaped detent body 9 that receives the pins 960, 960 in the receiving holes 660, 660 of the front plate 650 and is mounted non-rotatably. Through 900, the rotation of the valve stem 3 accompanying rotation of the magnet rotor 610 is prevented.
  • the detent structure may use a polygon other than a square.
  • An elastic member 920 composed of a compression panel is interposed between the upper end of the valve stem 3 and the upper bearing 640 to urge the valve stem 3 downward in the axial direction, and the behavior when the valve stem 3 separates from the valve seat 2 Has been stabilized.
  • valve stem 3 and the magnet rotor 610 have a large screw lead (r) with respect to the circumferential length (q) of the average screw diameter, that is, a large screw gradient (rZq) of 8% or more.
  • a large screw gradient (rZq) of 8% or more.
  • a large lead male screw 300 is provided on the valve stem 3 side and a large lead female screw 800 is provided on the rotary driver side, but the relationship between male and female may be reversed.

Landscapes

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

Abstract

L'invention concerne une soupape de commande capable d'empêcher qu'une tête de soupape ne morde dans un siège de soupape, pouvant être inversée de manière satisfaisante, et capable d'éliminer les vibrations au moment de la fermeture de la soupape tout en facilitant sa configuration d'ensemble, comprenant une tige (3) de soupape se déplaçant vers l'avant et vers l'arrière de façon verrouillée avec un corps d'entraînement rotatif (8) et rapprochant et éloignant la tête (4) de soupape du siège (2) de soupape et à partir de celui-ci lequel est disposé dans un carter (1) de soupape, le corps d'entraînement rotatif (8) étant couplé directement à la tige (3) de soupape par une grosse tige filetée ayant un grand pas par rapport à un diamètre de vis, et un corps d'arrêt de rotation (9), destiné à empêcher que la tige de soupape ne soit mise en rotation à mesure que tourne le corps d'entraînement rotatif, est disposé entre le carter (1) de soupape et la tige (3) de soupape.
PCT/JP2002/009207 2001-09-11 2002-09-09 Soupape de commande WO2003023265A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-274443 2001-09-11
JP2001274443A JP2005048779A (ja) 2001-09-11 2001-09-11 コントロールバルブ

Publications (1)

Publication Number Publication Date
WO2003023265A1 true WO2003023265A1 (fr) 2003-03-20

Family

ID=19099468

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/009207 WO2003023265A1 (fr) 2001-09-11 2002-09-09 Soupape de commande

Country Status (2)

Country Link
JP (1) JP2005048779A (fr)
WO (1) WO2003023265A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1473496A3 (fr) * 2003-03-25 2004-11-24 Carel S.p.A. Soupape à moteur électrique pour l'ajustage du débit de fluide, en particulier de fluide de refroidissement
FR2856129A1 (fr) * 2003-06-11 2004-12-17 Saia Burgess Dresden Gmbh Dispositif etanche de commande d'un clapet de valve gaz a ressort de rappel en rotation
WO2005080843A1 (fr) * 2004-02-13 2005-09-01 Rheodyne, Llc Commande de vanne
JP2006226369A (ja) * 2005-02-16 2006-08-31 Fuji Koki Corp 減速装置付電動弁
EP1746319A1 (fr) * 2005-07-19 2007-01-24 Fujikoki Corporation Vanne actionnée par moteur
CN102853597A (zh) * 2011-06-27 2013-01-02 浙江三花股份有限公司 一种电子膨胀阀
CN111059296A (zh) * 2018-10-17 2020-04-24 浙江盾安禾田金属有限公司 电子膨胀阀
EP3690295A4 (fr) * 2017-09-28 2021-06-16 Fujikoki Corporation Soupape motorisée

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008101765A (ja) * 2006-09-20 2008-05-01 Fuji Koki Corp 電動弁
JP5055013B2 (ja) * 2007-05-07 2012-10-24 株式会社不二工機 電動弁
JP2010223264A (ja) * 2009-03-19 2010-10-07 Icomes Labo:Kk 流量制御弁
JP5380562B2 (ja) * 2012-02-14 2014-01-08 株式会社不二工機 電動弁

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336942A (ja) * 1989-06-30 1991-02-18 Shimadzu Corp 自動制御用電動駆動機
JPH03172689A (ja) * 1989-11-30 1991-07-26 Aisan Ind Co Ltd 電動式流量調節弁
JP2503930Y2 (ja) * 1990-03-15 1996-07-03 愛三工業株式会社 アイドル回転数制御装置
JPH09119528A (ja) * 1995-10-24 1997-05-06 Fuji Koki:Kk 電動弁
JPH11241668A (ja) * 1998-02-26 1999-09-07 Keihin Corp ステップモータ式流量制御弁
JP2000346225A (ja) * 1999-03-26 2000-12-15 Saginomiya Seisakusho Inc 電動弁

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336942A (ja) * 1989-06-30 1991-02-18 Shimadzu Corp 自動制御用電動駆動機
JPH03172689A (ja) * 1989-11-30 1991-07-26 Aisan Ind Co Ltd 電動式流量調節弁
JP2503930Y2 (ja) * 1990-03-15 1996-07-03 愛三工業株式会社 アイドル回転数制御装置
JPH09119528A (ja) * 1995-10-24 1997-05-06 Fuji Koki:Kk 電動弁
JPH11241668A (ja) * 1998-02-26 1999-09-07 Keihin Corp ステップモータ式流量制御弁
JP2000346225A (ja) * 1999-03-26 2000-12-15 Saginomiya Seisakusho Inc 電動弁

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1473496A3 (fr) * 2003-03-25 2004-11-24 Carel S.p.A. Soupape à moteur électrique pour l'ajustage du débit de fluide, en particulier de fluide de refroidissement
FR2856129A1 (fr) * 2003-06-11 2004-12-17 Saia Burgess Dresden Gmbh Dispositif etanche de commande d'un clapet de valve gaz a ressort de rappel en rotation
WO2005080843A1 (fr) * 2004-02-13 2005-09-01 Rheodyne, Llc Commande de vanne
US7201185B2 (en) 2004-02-13 2007-04-10 Rheodyne Llc Coupled drive multi-position fluid valve apparatus and method
JP2006226369A (ja) * 2005-02-16 2006-08-31 Fuji Koki Corp 減速装置付電動弁
KR101099069B1 (ko) * 2005-02-16 2011-12-26 가부시기가이샤 후지고오키 감속장치부착 전동밸브
EP1746319A1 (fr) * 2005-07-19 2007-01-24 Fujikoki Corporation Vanne actionnée par moteur
US7523917B2 (en) 2005-07-19 2009-04-28 Fujikoki Corporation Motor-operated valve
CN102853597A (zh) * 2011-06-27 2013-01-02 浙江三花股份有限公司 一种电子膨胀阀
CN102853597B (zh) * 2011-06-27 2014-07-02 浙江三花股份有限公司 一种电子膨胀阀
EP3690295A4 (fr) * 2017-09-28 2021-06-16 Fujikoki Corporation Soupape motorisée
JP2021131160A (ja) * 2017-09-28 2021-09-09 株式会社不二工機 電動弁
US11378199B2 (en) 2017-09-28 2022-07-05 Fujikoki Corporation Motor-operated valve
JP7209384B2 (ja) 2017-09-28 2023-01-20 株式会社不二工機 電動弁
EP4160066A1 (fr) * 2017-09-28 2023-04-05 Fujikoki Corporation Soupape motorisée
US11906068B2 (en) 2017-09-28 2024-02-20 Fujikoki Corporation Motor-operated valve
EP4345401A3 (fr) * 2017-09-28 2024-05-29 Fujikoki Corporation Soupape motorisée
CN111059296A (zh) * 2018-10-17 2020-04-24 浙江盾安禾田金属有限公司 电子膨胀阀

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