EP0926412A2 - Electromagnetic actuator - Google Patents

Electromagnetic actuator Download PDF

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Publication number
EP0926412A2
EP0926412A2 EP98124439A EP98124439A EP0926412A2 EP 0926412 A2 EP0926412 A2 EP 0926412A2 EP 98124439 A EP98124439 A EP 98124439A EP 98124439 A EP98124439 A EP 98124439A EP 0926412 A2 EP0926412 A2 EP 0926412A2
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EP
European Patent Office
Prior art keywords
electromagnetic drive
drive according
magnetic core
anchor plate
valve seat
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.)
Granted
Application number
EP98124439A
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German (de)
French (fr)
Other versions
EP0926412A3 (en
EP0926412B1 (en
Inventor
Heinz Prof. Dr. Töpfer
Heinrich Dettmann
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.)
Buerkert Werke GmbH and Co KG
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Buerkert Werke GmbH and Co KG
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.)
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Publication of EP0926412A2 publication Critical patent/EP0926412A2/en
Publication of EP0926412A3 publication Critical patent/EP0926412A3/en
Application granted granted Critical
Publication of EP0926412B1 publication Critical patent/EP0926412B1/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding

Definitions

  • the invention relates to an electromagnetic drive, in particular for low-performance control of fluidic control devices such as Small valves and the like.
  • This object is achieved according to the invention by an electromagnetic drive reached, a magnetic core surrounded by a coil and a movable armature, the armature having a Reset element is combined into a component.
  • the anchor is flat Anchor plate formed and an air gap on an end face of the Magnetic core arranged opposite.
  • the anchor plate held and guided by the return element.
  • an elastic membrane with a flat surface is suitable as a reset element connected to the anchor plate and clamped on its outer edge.
  • the magnetic core is from surrounded by a cup-shaped yoke and has one opposite the anchor radially outward collar on, with the yoke the air gap limited.
  • the coil be wound directly onto the magnetic core. It turns out as advantageous if the magnetic core through a cylindrical core body is formed, which has a flange-like at each axial end Wearing collar. There is a simple design if that of the Collar of the magnetic core facing away from the air gap fits into a recess can be used at the bottom of the yoke.
  • a flat magnetic flux piece can be arranged to the anchor plate.
  • the electromagnetic drive according to the invention in a solenoid valve can reduce the number of components required can be reduced that the membrane opposite a valve seat is arranged and acts directly as a closing element.
  • the magnetic flux piece is annular and surrounds the valve seat coaxial.
  • valve connection formed as a channel coaxially penetrating the magnetic core and the Valve seat arranged coaxially to the magnetic core.
  • Another improvement the device is achieved by means of the anchor plate the membrane is held and guided so that it wobbles for automatic alignment on the valve seat.
  • an electromagnetic drive which in a solenoid valve is used.
  • a pot-shaped yoke 1 is accommodated in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 in the lower part 8 one two-part housing, a pot-shaped yoke 1 is accommodated.
  • an electromagnet is accommodated in the yoke 1 and has a magnetic core 4 and comprises a coil 7 wound directly on the core 4.
  • the core 4 consists of a cylindrical core and an upper and a lower flange-like collar 5 and 10 together on the upper and lower axial end of the core body are formed and extend radially outward.
  • the yoke 1 points in its Bottom section a recess into which the lower collar 10 of the Magnetic core is used appropriately.
  • a flat, movable anchor plate 2 is arranged in the chamber 11, which has the same diameter as the yoke 1.
  • the anchor plate 2 is in a first switching position of the valve, in which the Electromagnet is not activated by the yoke 1 through a gap 12 separated by the lower collar next to the yoke 1 by the upper collar 5 of the magnetic core 4 is limited.
  • the anchor plate 2 is with a Membrane 3 trained reset element coupled to her Outer edge is clamped.
  • the membrane 3 is flat with the Anchor plate 2 connected so that anchor plate 2 and membrane 3 are one component form. Characterized in that the anchor plate 2 firmly with the membrane 3rd connected, it is held and guided in its movements.
  • a lower valve connection R passes through the lower housing part 8 and the magnetic core 4 coaxially and is connected to the gap 12.
  • An upper valve port P is coaxial with the lower one Valve connection R and vertically through the upper housing part 9 and a valve seat 13 integrally formed thereon.
  • the valve seat 13 protrudes into the chamber 11 and is arranged coaxially to the magnetic core 4.
  • the membrane 3 is arranged opposite the valve seat 13 and is in the first switching position of the valve on the valve seat 13, so that thereby the mouth of the port P in the chamber 11th is closed.
  • the anchor plate 2 is so by means of the membrane 3 held and guided that they wobble to self Alignment on the valve seat 13 can perform.
  • Valve outlet A which is arranged laterally offset to the port P. and is next to the valve seat 13 in connection with the chamber 11.
  • valve seat 13 coaxially surrounds and on an inner wall of the upper housing part 9 is present.
  • the valve connection is there P via the air gap 12 and the chamber 11 in connection with the outlet A, while the mouth of the port P into the chamber 11 through the Membrane 3 is closed, i.e. the membrane 3 acts directly as Closing element.
  • the armature plate is activated by activating the electromagnet 2 moved together with the membrane 3 formed thereon and closes the mouth of port R, whereas the mouth of the Port P is released.
  • the port P is now over the chamber 11 in connection with the outlet A.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Surgical Instruments (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The electromagnetic drive has a magnetic core (4) enclosed by a coil (7) and a movable armature in the form of a flat armature plate (2) mounted opposite an end surface of the magnetic core with an air gap. The armature plate is combined with a restoring element (3) to form a component

Description

Die Erfindung betrifft einen Elektromagnetantrieb, insbesondere zur leistungsarmen Ansteuerung fluidischer Stelleinrichtungen wie Kleinventile und dergleichen.The invention relates to an electromagnetic drive, in particular for low-performance control of fluidic control devices such as Small valves and the like.

Aus der Entwicklung der Bustechnik und dem Wunsch der Entnahme der elektrischen Energie direkt aus dem Bus sowie der Erfüllung von Forderungen an den Einsatz dieser Antriebe in explosionsgefährdeter Umgebung resultiert die Forderung nach leistungsarmen Ansteuerungen für Stellantriebe.From the development of bus technology and the desire for removal of the electrical energy directly from the bus as well as the fulfillment of Requirements for the use of these drives in potentially explosive atmospheres Environment results in the demand for low-power controls for actuators.

Die Lösung dieser Aufgabe wird erfindungsgemäß durch einen Elektromagnetantrieb erreicht, der einen von einer Spule umgebenen Magnetkern und einen beweglichen Anker umfaßt, wobei der Anker mit einem Rückstellelement zu einem Bauteil zusammengefaßt ist.This object is achieved according to the invention by an electromagnetic drive reached, a magnetic core surrounded by a coil and a movable armature, the armature having a Reset element is combined into a component.

Bei einer bevorzugten Ausführungsform ist der Anker als flache Ankerplatte ausgebildet und einem Luftspalt an einer Stirnfläche des Magnetkerns gegenüberliegend angeordnet. Vorzugsweise wird die Ankerplatte durch das Rückstellelement gehalten und geführt. Besonders geeignet als Rückstellelement ist eine elastische Membran, die flächig mit der Ankerplatte verbunden und an ihrem Außenrand eingespannt ist.In a preferred embodiment, the anchor is flat Anchor plate formed and an air gap on an end face of the Magnetic core arranged opposite. Preferably the anchor plate held and guided by the return element. Especially an elastic membrane with a flat surface is suitable as a reset element connected to the anchor plate and clamped on its outer edge.

Zur Verbesserung des magnetischen Flusses ist der Magnetkern von einem topfförmigen Joch umgeben und weist gegenüber dem Anker einen radial auswärts gerichteten Kragen auf, der mit dem Joch den Luftspalt begrenzt.To improve the magnetic flux, the magnetic core is from surrounded by a cup-shaped yoke and has one opposite the anchor radially outward collar on, with the yoke the air gap limited.

Bei dem erfindungsgemäßen Elektromagnetantrieb kann die Spule unmittelbar auf den Magnetkern aufgewickelt werden. Es erweist sich als vorteilhaft, wenn der Magnetkern durch einen zylindrischen Kernkörper gebildet ist, der an jedem axialen Ende einen flanschartigen Kragen trägt. Es ergibt sich eine einfache Bauform, wenn der von dem Luftspalt abgewandte Kragen des Magnetkerns passend in eine Aussparung am Boden des Jochs eingesetzt werden kann.In the electromagnetic drive according to the invention, the coil be wound directly onto the magnetic core. It turns out as advantageous if the magnetic core through a cylindrical core body is formed, which has a flange-like at each axial end Wearing collar. There is a simple design if that of the Collar of the magnetic core facing away from the air gap fits into a recess can be used at the bottom of the yoke.

Zur weiteren Formung des magnetischen Flusses kann in Gegenüberlage zu der Ankerplatte ein flaches Magnetflußstück angeordnet sein. Bei der Verwendung des erfindungsgemäßen Elektromagnetantriebs in einem Magnetventil kann die Zahl der erforderlichen Bauteile dadurch reduziert werden, daß die Membran einem Ventilsitz gegenüberliegend angeordnet ist und unmittelbar als Schließelement wirkt. Vorzugsweise ist das Magnetflußstück ringförmig ausgebildet und umgibt den Ventilsitz koaxial.For further shaping of the magnetic flux can be compared a flat magnetic flux piece can be arranged to the anchor plate. When using the electromagnetic drive according to the invention in a solenoid valve can reduce the number of components required can be reduced that the membrane opposite a valve seat is arranged and acts directly as a closing element. Preferably the magnetic flux piece is annular and surrounds the valve seat coaxial.

Gemäß einer Ausführungsform der Erfindung ist ein Ventilanschluß als den Magnetkern koaxial durchsetzender Kanal ausgebildet und der Ventilsitz koaxial zu dem Magnetkern angeordnet. Eine weitere Verbesserung der Vorrichtung wird erreicht, indem die Ankerplatte mittels der Membran so gehalten und geführt ist, daß sie eine Taumelbewegung zur selbsttätigen Ausrichtung auf dem Ventilsitz ausführen kann.According to an embodiment of the invention is a valve connection formed as a channel coaxially penetrating the magnetic core and the Valve seat arranged coaxially to the magnetic core. Another improvement the device is achieved by means of the anchor plate the membrane is held and guided so that it wobbles for automatic alignment on the valve seat.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung und aus der Zeichnung, auf die Bezug genommen wird. In der Zeichnung zeigt die einzige Figur eine Querschnittansicht eines Elektromagnetantriebs. Further advantages and features of the invention result from the following description and from the drawing to which reference is made becomes. In the drawing, the only figure shows a cross-sectional view an electromagnetic drive.

In der Figur ist ein Elektromagnetantrieb dargestellt, der in einem Magnetventil verwendet wird. Im unteren Teil 8 eines zweiteiligen Gehäuses ist ein topfförmiges Joch 1 untergebracht. In dem Joch 1 ist ein Elektromagnet aufgenommen, der einen Magnetkern 4 und eine direkt auf den Kern 4 gewickelte Spule 7 umfaßt. Der Kern 4 setzt sich aus einem zylindrischen Kernkörper sowie einem oberen und einem unteren flanschartigen Kragen 5 bzw. 10 zusammen, die an dem oberen bzw. unteren axialen Ende des Kernkörpers ausgebildet sind und sich radial nach außen erstrecken. Das Joch 1 weist in seinem Bodenabschnitt eine Aussparung auf, in die der untere Kragen 10 des Magnetkerns passend eingesetzt ist.In the figure, an electromagnetic drive is shown, which in a solenoid valve is used. In the lower part 8 one two-part housing, a pot-shaped yoke 1 is accommodated. In an electromagnet is accommodated in the yoke 1 and has a magnetic core 4 and comprises a coil 7 wound directly on the core 4. The core 4 consists of a cylindrical core and an upper and a lower flange-like collar 5 and 10 together on the upper and lower axial end of the core body are formed and extend radially outward. The yoke 1 points in its Bottom section a recess into which the lower collar 10 of the Magnetic core is used appropriately.

Auf das untere Gehäuseteil 8 aufgesetzt definiert das obere Gehäuseteil 9 eine Kammer 11, deren Höhe im Vergleich zur Breite gering ist. In der Kammer 11 ist eine flache, bewegliche Ankerplatte 2 angeordnet, die denselben Durchmesser wie das Joch 1 besitzt. Die Ankerplatte 2 ist in einer ersten Schaltstellung des Ventils, bei der der Elektromagnet nicht aktiviert ist, von dem Joch 1 durch einen Spalt 12 getrennt, der nach unten neben dem Joch 1 durch den oberen Kragen 5 des Magnetkerns 4 begrenzt ist. Die Ankerplatte 2 ist mit einem als Membran 3 ausgebildeten Rückstellelement gekoppelt, die an ihrem Außenrand eingespannt ist. Die Membran 3 ist flächig mit der Ankerplatte 2 verbunden, so daß Ankerplatte 2 und Membran 3 ein Bauteil bilden. Dadurch, daß die Ankerplatte 2 fest mit der Membran 3 verbunden ist, wird sie gehalten und in ihren Bewegungen geführt.Placed on the lower housing part 8 defines the upper housing part 9 a chamber 11, the height of which is small compared to the width is. A flat, movable anchor plate 2 is arranged in the chamber 11, which has the same diameter as the yoke 1. The anchor plate 2 is in a first switching position of the valve, in which the Electromagnet is not activated by the yoke 1 through a gap 12 separated by the lower collar next to the yoke 1 by the upper collar 5 of the magnetic core 4 is limited. The anchor plate 2 is with a Membrane 3 trained reset element coupled to her Outer edge is clamped. The membrane 3 is flat with the Anchor plate 2 connected so that anchor plate 2 and membrane 3 are one component form. Characterized in that the anchor plate 2 firmly with the membrane 3rd connected, it is held and guided in its movements.

Ein unterer Ventilanschluß R durchsetzt den unteren Gehäuseteil 8 sowie den Magnetkern 4 koaxial und steht mit dem Spalt 12 in Verbindung. Ein oberer Ventilanschluß P verläuft koaxial zu dem unteren Ventilanschluß R und vertikal durch den oberen Gehäuseteil 9 sowie einen daran mittig angeformten Ventilsitz 13. Der Ventilsitz 13 ragt in die Kammer 11 hinein und ist koaxial zu dem Magnetkern 4 angeordnet. Die Membran 3 ist dem Ventilsitz 13 gegenüberliegend angeordnet und liegt in der ersten Schaltstellung des Ventils an dem Ventilsitz 13 an, so daß dadurch die Mündung des Anschlusses P in die Kammer 11 verschlossen ist. Die Ankerplatte 2 ist mittels der Membran 3 so gehalten und geführt, daß sie eine Taumelbewegung zur selbsttätigen Ausrichtung auf dem Ventilsitz 13 ausführen kann. A lower valve connection R passes through the lower housing part 8 and the magnetic core 4 coaxially and is connected to the gap 12. An upper valve port P is coaxial with the lower one Valve connection R and vertically through the upper housing part 9 and a valve seat 13 integrally formed thereon. The valve seat 13 protrudes into the chamber 11 and is arranged coaxially to the magnetic core 4. The membrane 3 is arranged opposite the valve seat 13 and is in the first switching position of the valve on the valve seat 13, so that thereby the mouth of the port P in the chamber 11th is closed. The anchor plate 2 is so by means of the membrane 3 held and guided that they wobble to self Alignment on the valve seat 13 can perform.

Ebenfalls vertikal durch den oberen Gehäuseteil 9 verläuft ein Ventilausgang A, der seitlich versetzt zu dem Anschluß P angeordnet ist und neben dem Ventilsitz 13 in Verbindung mit der Kammer 11 steht.Also runs vertically through the upper housing part 9 Valve outlet A, which is arranged laterally offset to the port P. and is next to the valve seat 13 in connection with the chamber 11.

In Gegenüberlage zu der Ankerplatte 2 ist in der Kammer 11 ein flaches, ringförmiges Magnetflußstück 6 angeordnet, das den Ventilsitz 13 koaxial umgibt und an einer Innenwand des oberen Gehäuseteils 9 anliegt.In opposition to the anchor plate 2 is in the chamber 11 flat, annular magnetic flux piece 6 arranged, the valve seat 13 coaxially surrounds and on an inner wall of the upper housing part 9 is present.

In der in der Figur gezeigten ersten Schaltstellung des Magnetventils bei nicht aktiviertem Elektromagneten steht der Ventilanschluß P über den Luftspalt 12 und die Kammer 11 in Verbindung mit dem Auslaß A, während die Mündung des Anschlusses P in die Kammer 11 durch die Membran 3 verschlossen ist, d.h. die Membran 3 wirkt unmittelbar als Schließelement. Durch Aktivierung des Elektromagneten wird die Ankerplatte 2 mitsamt der daran angeformten Membran 3 nach unten bewegt und schließt die Mündung des Anschlusses R, wogegen die Mündung des Anschlusses P freigegeben wird. Somit steht nun der Anschluß P über die Kammer 11 mit dem Ausgang A in Verbindung.In the first switching position of the solenoid valve shown in the figure If the electromagnet is not activated, the valve connection is there P via the air gap 12 and the chamber 11 in connection with the outlet A, while the mouth of the port P into the chamber 11 through the Membrane 3 is closed, i.e. the membrane 3 acts directly as Closing element. The armature plate is activated by activating the electromagnet 2 moved together with the membrane 3 formed thereon and closes the mouth of port R, whereas the mouth of the Port P is released. The port P is now over the chamber 11 in connection with the outlet A.

Claims (14)

Elektromagnetantrieb mit einem von einer Spule (7) umgebenen Magnetkern (4) und einem beweglichen Anker, dadurch gekennzeichnet, der Anker mit einem Rückstellelement zu einem Bauteil zusammengefaßt ist.Electromagnetic drive with one surrounded by a coil (7) Magnetic core (4) and a movable armature, characterized in that the anchor is combined with a restoring element to form a component is. Elektromagnetantrieb nach Anspruch 1, dadurch gekennzeichnet, daß der Anker als flache Ankerplatte (2) ausgebildet ist und einem Spalt (12) an einer Stirnfläche des Magnetkerns (4) gegenüberliegend angeordnet ist.Electromagnetic drive according to claim 1, characterized in that the anchor is designed as a flat anchor plate (2) and one Gap (12) on an end face of the magnetic core (4) opposite is arranged. Elektromagnetantrieb nach Anspruch 2, dadurch gekennzeichnet, daß die Ankerplatte (2) durch das Rückstellelement gehalten und geführt ist.Electromagnetic drive according to claim 2, characterized in that the anchor plate (2) is held and guided by the restoring element is. Elektromagnetantrieb nach Anspruch 3, dadurch gekennzeichnet, daß das Rückstellelement durch eine elastische Membran (3) gebildet ist, die flächig mit der Ankerplatte (2) verbunden und an ihrem Außenrand eingespannt ist.Electromagnetic drive according to claim 3, characterized in that the restoring element is formed by an elastic membrane (3) is, which is connected flat to the anchor plate (2) and on its outer edge is clamped. Elektromagnetantrieb nch einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Magnetkern (4) von einem topfförmigen Joch (1) umgeben ist und gegenüber dem Anker (2) einen radial auswärts gerichteten Kragen (5) aufweist, der mit dem Joch (1) den Spalt (12) begrenzt.Electromagnetic drive according to one of the preceding claims, characterized in that the magnetic core (4) of a cup-shaped Yoke (1) is surrounded and opposite the armature (2) a radially outward has directed collar (5) which with the yoke (1) the gap (12) limited. Elektromagnetantrieb nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Spule (7) unmittelbar auf den Magnetkern (4) aufgewickelt ist. Electromagnetic drive according to one of the preceding claims, characterized in that the coil (7) directly on the magnetic core (4) is wound up. Elektromagnetantrieb nach Anspruch 6, dadurch gekennzeichnet, daß der Magnetkern (4) durch einen zylindrischen Kernkörper gebildet ist, der an jedem axialen Ende einen flanschartigen Kragen (5, 6 bzw. 10) trägt.Electromagnetic drive according to claim 6, characterized in that the magnetic core (4) is formed by a cylindrical core body which has a flange-like collar (5, 6 or 10) carries. Elektromagnetantrieb nach Anspruch 7, dadurch gekennzeichnet, daß der von dem Spalt (12) abgewandte Kragen des Magnetkerns (4) passend in eine Aussparung am Boden des Jochs (1) eingesetzt ist.Electromagnetic drive according to claim 7, characterized in that the collar of the magnetic core (4) facing away from the gap (12) fits into a recess in the bottom of the yoke (1). Elektromagnetantrieb nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß in Gegenüberlage zu der Ankerplatte (2) ein flaches Magnetflußstück (6) angeordnet ist.Electromagnetic drive according to one of claims 2 to 8, characterized characterized in that opposite to the anchor plate (2) flat magnetic flux piece (6) is arranged. Elektromagnetantrieb nach Anspruch 4 und einem der Ansprüche 5 bis 9, zur Verwendung in einem Magnetventil, dadurch gekennzeichnet, daß die Membran (3) einem Ventilsitz (13) gegenüberliegend angeordnet ist und unmittelbar als Schließelement wirkt.Electromagnetic drive according to claim 4 and one of the claims 5 to 9, for use in a solenoid valve, characterized in that the membrane (3) a valve seat (13) arranged opposite and acts directly as a closing element. Elektromagnetantrieb nach den Ansprüchen 9 und 10, dadurch gekennzeichnet, daß das Magnetflußstück (6) ringförmig ausgebildet ist und den Ventilsitz (13) koaxial umgibt.Electromagnetic drive according to claims 9 and 10, characterized characterized in that the magnetic flux piece (6) is annular and coaxially surrounds the valve seat (13). Elektromagnetantrieb nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß ein Ventilanschluß (R) als den Magnetkern (4) koaxial durchsetzender Kanal ausgebildet ist.Electromagnetic drive according to claim 10 or 11, characterized characterized in that a valve connection (R) as the magnetic core (4) coaxially penetrating channel is formed. Elektromagnetantrieb nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß der Ventilsitz (13) koaxial zu dem Magnetkern (4) angeordnet ist.Electromagnetic drive according to one of claims 10 to 12, characterized in that the valve seat (13) coaxial with the Magnetic core (4) is arranged. Elektromagnetantrieb nach Anspruch 2 und einem der Anspüche 10 bis 13, dadurch gekennzeichnet, daß die Ankerplatte (2) mittels der Membran (3) so gehalten und geführt ist, daß sie eine Taumelbewegung zur selbsttätigen Ausrichtung auf dem Ventilsitz (13) ausführen kann.Electromagnetic drive according to claim 2 and one of the claims 10 to 13, characterized in that the anchor plate (2) by means of Membrane (3) is held and guided so that it wobbles can perform for automatic alignment on the valve seat (13).
EP98124439A 1997-12-23 1998-12-22 Electromagnetic actuator Expired - Lifetime EP0926412B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29722781U DE29722781U1 (en) 1997-12-23 1997-12-23 Electromagnetic drive
DE29722781U 1997-12-23

Publications (3)

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EP0926412A2 true EP0926412A2 (en) 1999-06-30
EP0926412A3 EP0926412A3 (en) 1999-12-08
EP0926412B1 EP0926412B1 (en) 2004-03-17

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EP98124439A Expired - Lifetime EP0926412B1 (en) 1997-12-23 1998-12-22 Electromagnetic actuator

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EP (1) EP0926412B1 (en)
AT (1) ATE262131T1 (en)
DE (2) DE29722781U1 (en)

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DE1836868U (en) * 1959-03-26 1961-08-31 Concordia Maschinen Und Elek Z ELECTROMAGNETIC VALVE.
DE2246574A1 (en) * 1972-09-22 1974-03-28 Bosch Gmbh Robert DIAPHRAGM SOLENOID VALVE
FR2205980A6 (en) * 1972-11-07 1974-05-31 Vidalenq Maurice
DE2910660A1 (en) * 1979-03-17 1980-09-25 Stoll Kurt Control valve with magnetic head - has armature carrying sealing bolt with opposing control functions by provision of core on either side of valve chamber
DE3133060A1 (en) * 1980-08-29 1982-04-01 Aisin Seiki K.K., Kariya, Aichi Pressure control valve
GB2124342A (en) * 1982-06-26 1984-02-15 Alexander Controls Ltd Apparatus for controlling the flow of gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021248780A1 (en) * 2020-06-12 2021-12-16 苏州仁甬得物联科技有限公司 Micro-flow valve control mechanism

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EP0926412A3 (en) 1999-12-08
EP0926412B1 (en) 2004-03-17
ATE262131T1 (en) 2004-04-15
DE59810992D1 (en) 2004-04-22
DE29722781U1 (en) 1999-04-22

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