DE4423313A1 - Electrically-driven setting element with self-locking function - Google Patents

Electrically-driven setting element with self-locking function

Info

Publication number
DE4423313A1
DE4423313A1 DE4423313A DE4423313A DE4423313A1 DE 4423313 A1 DE4423313 A1 DE 4423313A1 DE 4423313 A DE4423313 A DE 4423313A DE 4423313 A DE4423313 A DE 4423313A DE 4423313 A1 DE4423313 A1 DE 4423313A1
Authority
DE
Germany
Prior art keywords
spindle
threaded spindle
housing
rod
cooperates
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.)
Withdrawn
Application number
DE4423313A
Other languages
German (de)
Inventor
Walter Schauer
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Priority to DE4423313A priority Critical patent/DE4423313A1/en
Publication of DE4423313A1 publication Critical patent/DE4423313A1/en
Withdrawn legal-status Critical Current

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
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • 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
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples

Landscapes

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

Abstract

The setting element is operated via an electric stepping motor (3) and a spindle drive (6,7) for converting the rotation of the motor into a corresponding linear movement. The end of the threaded spindle (7) projecting from the housing (2) of the stepping motor is provided with an electromagnet (9), cooperating with an armature (13), for retaining a rod (14), which is spring-biased to lock the spindle upon failure of the current.

Description

Die Erfindung betrifft ein elektromotorisches Stellglied, bei dem die Drehbewegung eines Elektromotors mittels einer in einer Antriebshülse gehaltenen Spindelmutter und einer gegen Verdrehen gesicherten Gewindespindel in eine Linearbewegung umgewandelt wird (DE-C2-33 27946).The invention relates to an electromotive actuator, in which the rotary movement of a Electric motor by means of a spindle nut held in a drive sleeve and one against Turning secured threaded spindle is converted into a linear movement (DE-C2-33 27946).

Insbesondere durch den Einsatz von sogenannten Schrittmotoren ist eine digitale Ansteuerung der Stellglieder möglich geworden. Für eine feinfühlige Steuerung wird eine sehr große Auflösung der Linearbewegung in viele einzelne Motorschritte erreicht, die bisher bekannte Mutterspindelstellglieder nicht erfüllen konnten, mit dem Nachteil, daß bei Ausfall des Schrittmotors oder der elektronischen Ansteuerung eine selbsttätige Rückstellung in Ausgangslage nicht erreicht wird, da Selbsthemmung im Spindeltrieb besteht.In particular through the use of so-called stepper motors, digital control is possible the actuators became possible. For a sensitive control is a very large one Linear motion resolution achieved in many individual motor steps, the previously known Mother spindle actuators could not meet, with the disadvantage that if the Stepper motor or the electronic control an automatic reset in Starting position is not reached because there is self-locking in the spindle drive.

Hiervon ausgehend liegt der Erfindung daher die Aufgabe zugrunde, das eingangs genannte Stellglied derart zu verändern, daß in Verbindung mit einem Schrittmotor eine Verstellung bei größtmöglicher Schrittzahl erreichbar wird, wobei bei Einsatz des Stellgliedes zum Beispiel für ein Dosierventil bei Ausfall des Schrittmotors oder der elektronischen Ansteuerung automatisch eine Rückstellung des Stellgliedes in Ausgangslage bzw. in Schließstellung des Ventils erreichbar sein soll.Proceeding from this, the invention is therefore based on the object of the aforementioned To change the actuator so that in conjunction with a stepper motor an adjustment largest possible number of steps can be achieved, for example when using the actuator a dosing valve automatically if the stepper motor or the electronic control fails a reset of the actuator in the initial position or in the closed position of the valve should be reachable.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst worden. Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.This object is achieved by the features specified in the characterizing part of patent claim 1 been solved. Advantageous further developments are specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird mit Angabe von erreichbaren Vorteilen nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and is provided with information of achievable advantages described below.

Die Zeichnung zeigt einen Längsschnitt durch ein erfindungsgemäßes elektromotorisches Stellglied 1 für die Verstellung eines Ventils, bestehend aus einem in einem Gehäuse 2 angeordneten Schrittmotor 3 mit Statorwicklungen 4 und einem im Gehäuse 2 gelagerten Rotor 5. The drawing shows a longitudinal section through an electromotive actuator 1 according to the invention for the adjustment of a valve, consisting of a stepping motor 3 arranged in a housing 2 with stator windings 4 and a rotor 5 mounted in the housing 2 .

Die Statorwicklungen 4 sind durch eine digitale Steuerschaltung ansteuerbar, womit eine volle Motordrehung in bis zu 200 Einzelschritte zerlegt werden kann, die vom Rotor 5 vollzogen werden. Der Rotor ist fest mit einer Spindelmutter 6 verbunden, die drehbar im Gehäuse 2 angeordnet ist und auf eine im Gehäuse 2 gehaltene, nur gegen Verdrehen gesicherte Gewindespindel 7 aufgeschraubt ist.The stator windings 4 can be controlled by a digital control circuit, with which a full motor rotation can be broken down into up to 200 individual steps which are performed by the rotor 5 . The rotor is firmly connected to a spindle nut 6 which is rotatably arranged in the housing 2 and is screwed onto a threaded spindle 7 which is held in the housing 2 and is only secured against rotation.

Es ist vorgesehen, daß die Spindelmutter 6 und die Gewindespindel 7 entsprechende Freiräume für ein Eintauchen der Gewindespindel 7 in die Spindelmutter 6 aufweist. Das untere Ende der Gewindespindel 7 ist aus dem Gehäuse 2 herausgeführt und fährt bei Drehung des Schrittmotors 3 mehr oder weniger aus dem Gehäuse 2 heraus oder je nach Drehrichtung in das Gehäuse 2 hinein. Soweit entspricht das Stellglied dem zitierten Stand der Technik.It is envisaged that the spindle nut 6 and the threaded spindle 7 have corresponding clearances for immersing the threaded spindle 7 in the spindle nut 6 . The lower end of the threaded spindle 7 is led out of the housing 2 and moves more or less out of the housing 2 when the stepping motor 3 rotates or, depending on the direction of rotation, into the housing 2 . So far the actuator corresponds to the cited prior art.

Erfindungsgemäß ist das aus dem Gehäuse 2 herausragende Ende der Gewindespindel 7 mit einer Längsbohrung 8 ausgeführt und weist einen auf dem äußeren Durchmesser fest aufgeschobenen Elektromagnetkörper 9 auf, dessen Spulenwicklung 10 über eine in Form einer zylindrischen Feder gewickelte Anschlußleitung 11 mit einem im Gehäuse 2 angeordneten und aus diesem herausgeführten Steckeranschluß 12 verbunden ist. Die so gewickelte Anschlußleitung ermöglicht es, daß der Elektromagnetkörper 9 der Verstellung der Gewindespindel 7 folgen kann.According to the protruding from the housing 2 end of the threaded spindle 7 with a longitudinal bore 8 and has a fixed on the outer diameter of the electromagnetic body 9 , the coil winding 10 via a winding in the form of a cylindrical spring 11 arranged in the housing 2 and is connected from this lead connector 12 . The connecting line wound in this way enables the electromagnetic body 9 to follow the adjustment of the threaded spindle 7 .

Der Elektromagnet 9 wirkt auf ein aus Weicheisen bestehendes Ankerglied 13, das von diesem bei bestromtem Elektromagnet 9 angezogen wird und auf einer Stange 14 befestigt ist, die lose in der Längsbohrung 8 der Gewindespindel 7 gehalten ist. Eine Feder 15 ist zwischen dem Ankerglied 13 und der Gewindespindel 7 eingespannt und wirkt gegen die Magnetkraft. Bei abgeschaltetem Elektromagneten 9 wird die mit dem Ankerglied 13 verbundene Stange 14 aus der Gewindespindel 7 herausgedrückt und in Richtung der Ausgangsstellung der Gewindespindel 7 geschoben.The electromagnet 9 acts on an anchor member 13 made of soft iron, which is attracted by the latter when the electromagnet 9 is energized and is fastened on a rod 14 which is held loosely in the longitudinal bore 8 of the threaded spindle 7 . A spring 15 is clamped between the armature member 13 and the threaded spindle 7 and acts against the magnetic force. When the electromagnet 9 is switched off, the rod 14 connected to the armature member 13 is pressed out of the threaded spindle 7 and pushed in the direction of the starting position of the threaded spindle 7 .

Bei der dargestellten Ausführung ist die Stange 14 an ihrem äußeren Ende als Ventilschließkörper 16 ausgebildet, der in Ausgangsstellung gegen einen Ventilsitz 17 eines Kanaldurchgangs 18 anliegt und diesen steuert. In the embodiment shown, the rod 14 is formed at its outer end as a valve closing body 16 which, in the starting position, bears against a valve seat 17 of a channel passage 18 and controls it.

Bei bestromtem Elektromagneten und Ausgangsstellung der Gewindespindel 7 besteht zwischen dem Ankerglied 13 und dem Elektromagneten 9 quasi kein Luftspalt mehr, so daß die Magnetkraft am Ankerglied 13 anzieht. Die Feder 15 ist dann auf kleinste Einspannlänge zusammengedrückt und weist eine kleinere Kraft als der Elektromagnet auf. Sobald der Schrittmotor 3 in Öffnungsrichtung angesteuert wird, hebt der Ventilschließkörper 16 vom Ventilsitz 17 ab und der Kanalabschnitt 18 kann von einem Fluid durchströmt werden.When the electromagnet is energized and the starting position of the threaded spindle 7 there is virtually no air gap between the armature member 13 and the electromagnet 9 , so that the magnetic force on the armature member 13 attracts. The spring 15 is then compressed to the smallest clamping length and has a smaller force than the electromagnet. As soon as the stepping motor 3 is actuated in the opening direction, the valve closing body 16 lifts off the valve seat 17 and a fluid can flow through the channel section 18 .

Bei Ausfall des Schrittmotors oder der elektronischen Ansteuerung erfolgt automatisch eine Rückstellung in Ausgangslage bzw. in Schließstellung des Ventils durch Abschaltung der Elektromagnetbestromung, wodurch die mit dem Ankerglied 13 verbundene Stange 14 aus der Gewindespindel 7 herausgedrückt und in Richtung der Ausgangsstellung der Gewindespindel 7 geschoben wird.In the event of failure of the stepper motor or the electronic control, a reset in the starting position or in the closed position of the valve takes place automatically by switching off the electromagnet current, as a result of which the rod 14 connected to the armature member 13 is pressed out of the threaded spindle 7 and pushed in the direction of the starting position of the threaded spindle 7 .

Claims (3)

1. Elektromotorisches Stellglied, bei dem die Drehbewegung eines Elektromotors mittels einer in einem Rotor gehaltenen Spindelmutter und einer gegen Verdrehen gesicherten Gewindespindel in eine Linearbewegung umgewandelt wird dadurch gekennzeichnet, daß die Gewindespindel (7) an ihrem aus dem Gehäuse (2) herausgeführten Ende einen Elektromagneten (9) aufweist, der bei Bestromung mit einem Ankerglied (13) zusammenwirkt, der mit einer lose in einer Spindelbohrung (8) gehaltenen Stange (14) zusammenwirkt und die Stange (14) gegen die Kraft einer eingespannten Feder (15) in die Gewindespindel (7) hineingedrückt hält.1. Electromotive actuator in which the rotary movement of an electric motor is converted into a linear movement by means of a spindle nut held in a rotor and a threaded spindle secured against twisting, characterized in that the threaded spindle ( 7 ) has an electromagnet at its end which leads out of the housing ( 2 ) ( 9 ), which, when energized, cooperates with an anchor member ( 13 ), which cooperates with a rod ( 14 ) held loosely in a spindle bore ( 8 ) and the rod ( 14 ) against the force of a clamped spring ( 15 ) in the threaded spindle ( 7 ) holds down. 2. Stellglied nach Anspruch 1, dadurch gekennzeichnet, daß die mit dem Ankerglied (13) verbundene Stange (14) an ihrem äußeren Ende als Ventilschließkörper (16) ausgebildet ist, der mit einem Ventilsitz (17) eines Kanalabschnitts (18) zusammenwirkt.2. Actuator according to claim 1, characterized in that the rod ( 14 ) connected to the armature member ( 13 ) is formed at its outer end as a valve closing body ( 16 ) which cooperates with a valve seat ( 17 ) of a channel section ( 18 ). 3. Stellglied nach Anspruch 2, dadurch gekennzeichnet, daß die über eine in Form einer zylindrischen Feder gewickelte Anschlußleitung (11) mit einem im Gehäuse (2) angeordneten und aus diesem herausgeführten Steckeranschluß (12) verbunden ist.3. Actuator according to Claim 2, characterized in that the connection line ( 11 ), which is wound in the form of a cylindrical spring, is connected to a plug connection ( 12 ) which is arranged in the housing ( 2 ) and is led out of it.
DE4423313A 1994-07-02 1994-07-02 Electrically-driven setting element with self-locking function Withdrawn DE4423313A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4423313A DE4423313A1 (en) 1994-07-02 1994-07-02 Electrically-driven setting element with self-locking function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4423313A DE4423313A1 (en) 1994-07-02 1994-07-02 Electrically-driven setting element with self-locking function

Publications (1)

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DE4423313A1 true DE4423313A1 (en) 1996-01-04

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859178A1 (en) * 1997-02-14 1998-08-19 Hydroperfect International Hpi Flow control sliding valve
US5931142A (en) * 1996-07-10 1999-08-03 U.S. Philips Corporation Device for the linear actuation of a control member
FR2775505A1 (en) * 1998-02-27 1999-09-03 Normalair Garrett Ltd Valve assembly for controlling gas flow in G-suit and breathing equipment of pilot life support system in fighter aircraft
EP1024578A1 (en) * 1999-01-29 2000-08-02 Mannesmann VDO Aktiengesellschaft Magnet device with integrally formed attachment
WO2002023032A1 (en) * 2000-09-12 2002-03-21 Berger Lahr Gmbh & Co. Kg Two-step electric-motor driven actuator for a valve
EP1199517A3 (en) * 2000-10-19 2004-05-12 JCI REGELUNGSTECHNIK GmbH Gas shut-off safety valve
EP1445523A2 (en) * 2003-02-04 2004-08-11 Geyser Gastech S.A. Valve with motor actuation for gas flow regulating
EP1457724A2 (en) * 2003-03-10 2004-09-15 Geyser Gastech S.A. Valve with motor actuation
WO2004097274A1 (en) * 2003-04-17 2004-11-11 Saia-Burgess Gmbh Dresden Gas control and safety valve
EP1503122A1 (en) * 2003-07-31 2005-02-02 Miura Co., Ltd. Valve
WO2005073632A1 (en) * 2004-01-28 2005-08-11 Sit La Precisa S.P.A. Multi-fonction valve unit for controlling the supply of a combustible gas to a burner apparatus
EP1617115A1 (en) * 2004-07-15 2006-01-18 MINEBEA Co., Ltd. Actuator integrally provided with fail-safe function
WO2009045140A1 (en) * 2007-10-02 2009-04-09 Aktiebolaget Skf A valve actuator
WO2009071902A1 (en) * 2007-12-06 2009-06-11 Kohler Mira Limited Flow control valve
WO2009090128A1 (en) * 2008-01-16 2009-07-23 Continental Automotive Gmbh Electronic actuator for actuating a valve in a turbo charger of a motor vehicle
WO2011133320A2 (en) 2010-04-22 2011-10-27 Continental Automotive Systems, Inc. Idle air control valve with plastic housing and retention features
CN103775717A (en) * 2012-10-22 2014-05-07 艾默生环境优化技术(苏州)有限公司 Electronic expansion valve
CN105003717A (en) * 2015-07-21 2015-10-28 张志通 Electromechanical electromagnetic valve
WO2019196063A1 (en) * 2018-04-12 2019-10-17 浙江盾安禾田金属有限公司 Electronic expansion valve
NL2026349A (en) * 2019-09-25 2020-10-15 Jiangxi Audy Brasswork Inc Valve element for electronic expansion valve

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931142A (en) * 1996-07-10 1999-08-03 U.S. Philips Corporation Device for the linear actuation of a control member
EP0859178A1 (en) * 1997-02-14 1998-08-19 Hydroperfect International Hpi Flow control sliding valve
FR2759758A1 (en) * 1997-02-14 1998-08-21 Hydroperfect Int CONTROLLED FLOW DRAWER VALVE
FR2775505A1 (en) * 1998-02-27 1999-09-03 Normalair Garrett Ltd Valve assembly for controlling gas flow in G-suit and breathing equipment of pilot life support system in fighter aircraft
EP1024578A1 (en) * 1999-01-29 2000-08-02 Mannesmann VDO Aktiengesellschaft Magnet device with integrally formed attachment
US6492751B1 (en) 1999-01-29 2002-12-10 Siemens Vdo Automotive Corporation Magnetic device with spaced apart pole plates, flux return strip and electrical connector having integral mounting
WO2002023032A1 (en) * 2000-09-12 2002-03-21 Berger Lahr Gmbh & Co. Kg Two-step electric-motor driven actuator for a valve
EP1199517A3 (en) * 2000-10-19 2004-05-12 JCI REGELUNGSTECHNIK GmbH Gas shut-off safety valve
EP1445523A2 (en) * 2003-02-04 2004-08-11 Geyser Gastech S.A. Valve with motor actuation for gas flow regulating
EP1445523A3 (en) * 2003-02-04 2004-11-24 Geyser Gastech S.A. Valve with motor actuation for gas flow regulating
EP1457724A2 (en) * 2003-03-10 2004-09-15 Geyser Gastech S.A. Valve with motor actuation
EP1457724A3 (en) * 2003-03-10 2004-11-24 Geyser Gastech S.A. Valve with motor actuation
WO2004097274A1 (en) * 2003-04-17 2004-11-11 Saia-Burgess Gmbh Dresden Gas control and safety valve
EP1503122A1 (en) * 2003-07-31 2005-02-02 Miura Co., Ltd. Valve
CN100380027C (en) * 2003-07-31 2008-04-09 三浦工业株式会社 Valve
WO2005073632A1 (en) * 2004-01-28 2005-08-11 Sit La Precisa S.P.A. Multi-fonction valve unit for controlling the supply of a combustible gas to a burner apparatus
EP1617115A1 (en) * 2004-07-15 2006-01-18 MINEBEA Co., Ltd. Actuator integrally provided with fail-safe function
US7210665B2 (en) 2004-07-15 2007-05-01 Minebea Co., Ltd. Actuator integrally provided with fail-safe function
US8864103B2 (en) 2007-10-02 2014-10-21 Aktiebolaget Skf Valve actuator
CN101849127B (en) * 2007-10-02 2012-06-06 Skf公司 A valve actuator
WO2009045140A1 (en) * 2007-10-02 2009-04-09 Aktiebolaget Skf A valve actuator
CN101918743B (en) * 2007-12-06 2013-02-13 柯勒米拉有限公司 Flow control valve
WO2009071902A1 (en) * 2007-12-06 2009-06-11 Kohler Mira Limited Flow control valve
US8585009B2 (en) 2007-12-06 2013-11-19 Kohler Mira Limited Flow control valve
WO2009090128A1 (en) * 2008-01-16 2009-07-23 Continental Automotive Gmbh Electronic actuator for actuating a valve in a turbo charger of a motor vehicle
CN102844967B (en) * 2010-04-22 2016-08-17 大陆汽车***公司 There is plastic casing and keep the idle air control valve of architectural feature
WO2011133320A2 (en) 2010-04-22 2011-10-27 Continental Automotive Systems, Inc. Idle air control valve with plastic housing and retention features
CN102844967A (en) * 2010-04-22 2012-12-26 大陆汽车***公司 Idle air control valve with plastic housing and retention features
AU2011243111B2 (en) * 2010-04-22 2014-03-20 Continental Automotive Systems, Inc. Idle air control valve with plastic housing and retention features
JP2013526250A (en) * 2010-04-22 2013-06-20 コンティネンタル オートモーティブ システムズ ユーエス， インコーポレイティッド Idle air control valve with plastic casing and holding mechanism
WO2011133320A3 (en) * 2010-04-22 2012-08-09 Continental Automotive Systems, Inc. Idle air control valve with plastic housing and retention features
US20150083322A1 (en) * 2010-04-22 2015-03-26 Continental Automotive Systems, Inc. Idle Air Control Valve With Plastic Housing And Retention Features
US9144936B2 (en) 2010-04-22 2015-09-29 Continental Automotive Systems, Inc. Idle air control valve with plastic housing and retention features
KR101812715B1 (en) 2010-04-22 2017-12-27 컨티넨탈 오토모티브 시스템즈 인코포레이티드 Idle air control valve with plastic housing and retention features
CN103775717A (en) * 2012-10-22 2014-05-07 艾默生环境优化技术(苏州)有限公司 Electronic expansion valve
CN103775717B (en) * 2012-10-22 2017-08-29 艾默生环境优化技术(苏州)有限公司 Electronic expansion valve
CN105003717A (en) * 2015-07-21 2015-10-28 张志通 Electromechanical electromagnetic valve
WO2019196063A1 (en) * 2018-04-12 2019-10-17 浙江盾安禾田金属有限公司 Electronic expansion valve
KR20200119288A (en) * 2018-04-12 2020-10-19 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 Electronic expansion valve
KR102335760B1 (en) 2018-04-12 2021-12-06 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 electronic expansion valve
NL2026349A (en) * 2019-09-25 2020-10-15 Jiangxi Audy Brasswork Inc Valve element for electronic expansion valve

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