EP0696809A2 - Electromagnetic actuator, in particular for solenoid valves as actuators for fluids - Google Patents

Electromagnetic actuator, in particular for solenoid valves as actuators for fluids Download PDF

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Publication number
EP0696809A2
EP0696809A2 EP95250180A EP95250180A EP0696809A2 EP 0696809 A2 EP0696809 A2 EP 0696809A2 EP 95250180 A EP95250180 A EP 95250180A EP 95250180 A EP95250180 A EP 95250180A EP 0696809 A2 EP0696809 A2 EP 0696809A2
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EP
European Patent Office
Prior art keywords
magnet armature
movable magnet
fixed
spring
electromagnetic drive
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
EP95250180A
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German (de)
French (fr)
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EP0696809A3 (en
EP0696809B1 (en
Inventor
Huu Tri Nyguyen
Reinhard Mauentöbben
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Vodafone GmbH
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Mannesmann AG
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Publication date
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Publication of EP0696809A2 publication Critical patent/EP0696809A2/en
Publication of EP0696809A3 publication Critical patent/EP0696809A3/en
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Publication of EP0696809B1 publication Critical patent/EP0696809B1/en
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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
    • H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics

Definitions

  • the invention relates to an electromagnetic drive, in particular for electromagnetic valves as actuators for fluids according to the generic features of patent claim 1.
  • the course of the attraction force of a DC magnet as a function of an air gap between armature and magnetic core at different values of the excitation current is shown together with the force characteristic of a linear counter-pressure spring and the curved characteristic of a counter-pressure spring.
  • the curved characteristic of the counter pressure spring is generated by varying the outer contour of an otherwise flat spring, starting with a rectangle, circle, barrel shape, trapezoidal shape up to the concave and double cone shape.
  • the known principle presupposes a wedge-shaped beveled or curved support surface as part of a carrier, with the increasing stroke of the individual magnet armature still requiring a very rapidly increasing current strength at the electromagnetic coil in order to bring about the desired course of the spring characteristic even with soft spiral springs.
  • the present invention has for its object to modify an economically inexpensive switching valve, the individual parts of which are already in production, in such a way that with its continuous behavior a better resolution in the current and force direction is achieved, so that the system reacts more sensitively to the control current .
  • the electromagnetic drive should also be able to be used at a high pressure level, and a longer service life of the spiral spring should be achieved.
  • the object is achieved according to the invention in that an approximately cup-shaped and at the same time cone-shaped crown spring is provided outside the air gap and is arranged clamped between the fixed and the movable magnet armature, namely in the axial direction between a first fixed support and an annular ring on the movable magnet armature Edition.
  • the air gap is advantageously not influenced here and could even approach zero.
  • the crown spring according to the invention is predominantly subjected to buckling stress in the sense of an Euler buckling and therefore has a longer service life. It is also advantageous that the installation space for the crown spring is not limited to the anchor diameter.
  • the crown spring has two or more domes formed on the circular closed circumference with the same spacing and extending from a low level line to a higher level line.
  • the bending behavior of the crown spring and thus the course of the force characteristic can be favorably influenced via the shape of the crests and their transitions.
  • the invention is further developed in such a way that, starting from the low level line, a transition between the crests is formed progressively with a turning point. As a result, the desired force characteristic curves are stabilized.
  • first fixed support is arranged as a cylindrical cavity with an annular shoulder and the second, movable support is provided on an annular shoulder of the movable magnet armature.
  • the electromagnetic drive is designed as an electromagnetic valve with an electromagnetic housing 1 and a valve seat housing 2 (FIG. 1).
  • an armature tube 3 is sealed against the respective fluid medium by means of armature tube seals 4 and 5.
  • an anchor tube sealing element 6 is installed, which cooperates upwards with a media outlet.
  • an undercut valve sealing element 7 interacts with the actual valve seat 8, which controls the media flow to a right media line connection 9 with a first sealing ring 10, an adapter sleeve 11 and / or to a left media line connection 12 with a second sealing ring 13 and an adapter sleeve 14 controls.
  • the anchor tube 3 is mounted in a bearing bush 15.
  • a magnetic yoke 16 in the electromagnetic housing 1, the electromagnetic coil 17 with a current connection 17a.
  • a fixed magnet armature 18 with an armature sealing ring 18a and a movable magnet armature 19 lie opposite one another within the electromagnet coil 17 and form an air gap 20 between them Silencer 21.
  • the family of current curves shown in FIG. 2 and a maximum current I max and the generated force F leads to the thick-drawn force spring characteristic when using a spiral spring 22 in the form of a crown spring 22a with a circularly closed circumference 22b in the axial direction 23. As can be seen, this force spring characteristic curve has a progression similar to that of the current I.
  • the crown spring 22a improves the resolution of the current I and without influencing the air gap the lifting force F and thus a more sensitive system of control is achieved without the installation space of the spiral spring 22 being limited to the armature diameter.
  • the approximately cup-shaped and at the same time cone-shaped crown spring 22a which is provided outside the air gap 20, is clamped between the fixed magnet armature 18 and the movable armature 19.
  • the crown spring 22a In the axial direction 23, the crown spring 22a is located between a first fixed support 24 and a second annular support 25 on the movable magnet armature 19.
  • crown springs 22a such crown springs 22a are shown.
  • the crown spring 22a in each case has two or more domes 29 formed (punched out) with the same spacing and extending from a low level line 26 to a higher level line 27 over the circularly closed circumference 22b. Starting from the lower level line 27, a transition 30 between the crests 29 is progressively designed from a turning point 28.
  • the first fixed support 24 is formed as a cylindrical cavity 31 with an annular shoulder 31a and the second movable support 25 is supported on an annular shoulder 32 of the movable magnet armature 19.

Abstract

The operating drive uses an electromagnetic (17) and a cooperating magnetic yoke (16), attached magnetic armatures (18,19) positioned centrally relative to the coil and displaced coaxially relative to one another to provide a variable air-gap (20). The electromagnetic force is determined by the size of the air-gap for each energising current and by the force characteristic of a flexure spring (22) acting on the movable armature (19). A conical dished flexure spring (22a) is used, positioned on the outside of the air-gap and supported in the axial direction between a fixed stop (24) provided by the stationary armature and an annular stop (25) provided by the movable armature.

Description

Die Erfindung betrifft einen Elektromagnetantrieb, insbesondere für Elektromagnetventile als Stellglieder für Fluide gemäß den Gattungsmerkmalen des Patentanspruches 1.The invention relates to an electromagnetic drive, in particular for electromagnetic valves as actuators for fluids according to the generic features of patent claim 1.

Eine ähnliche Bauweise, jedoch ohne einen zentrischen, festen und einen zentrischen, koaxialen, beweglichen Magnetanker, ist bekannt (DE 35 39 145 A1). Auch dort wird bei unterschiedlichen Werten des Erregerstroms zusammen mit der Kraftkennlinie einer Biegefeder ein Arbeitspunkt der Hubkraftkennlinie des beweglichen Magnetankers festgelegt. Es ist allerdings nicht beschrieben, welcher Bauteil mit einem Dichtungselement bzw. einem Dichtungssitz eines Medienleitungsanschlusses zusammenwirkt.A similar design, but without a central, fixed and a central, coaxial, movable magnet armature, is known (DE 35 39 145 A1). In this case too, an operating point of the lifting force characteristic of the movable magnet armature is determined together with the force characteristic of a spiral spring at different values of the excitation current. However, it is not described which component interacts with a sealing element or a sealing seat of a media line connection.

Bekannterweise wird der Verlauf der Anzugskraft eines Gleichstrommagneten in Abhängigkeit eines Luftspaltes zwischen Anker und Magnetkern bei unterschiedlichen Werten des Erregerstromes zusammen mit der Kraftkennlinie einer linearen Gegendruckfeder sowie die gekrümmte Kennlinie einer Gegendruckfeder dargestellt. Die gekrümmte Kennlinie der Gegendruckfeder wird hierbei durch eine Variation des äußeren Umrisses einer ansonsten flachen Feder, beginnend bei Rechteck, Kreis, Tonnenform, Trapezform bis zur Konkav- und Doppelkonus-Form erzeugt.As is known, the course of the attraction force of a DC magnet as a function of an air gap between armature and magnetic core at different values of the excitation current is shown together with the force characteristic of a linear counter-pressure spring and the curved characteristic of a counter-pressure spring. The curved characteristic of the counter pressure spring is generated by varying the outer contour of an otherwise flat spring, starting with a rectangle, circle, barrel shape, trapezoidal shape up to the concave and double cone shape.

Das bekannte Prinzip setzt neben der Biegefeder eine keilförmig abgeschrägte oder gekrümmte Stützfläche als Teil eines Trägers voraus, wobei mit zunehmendem Hub des einzelnen Magnetankers weiterhin eine sehr schnell wachsende Stromstärke an der Elektromagnetspule erforderlich ist, um auch bei weichen Biegefedern den gewünschten Verlauf der Federkennlinie herbeizuführen.In addition to the spiral spring, the known principle presupposes a wedge-shaped beveled or curved support surface as part of a carrier, with the increasing stroke of the individual magnet armature still requiring a very rapidly increasing current strength at the electromagnetic coil in order to bring about the desired course of the spring characteristic even with soft spiral springs.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein wirtschaftlich günstig herstellbares Schaltventil, dessen Einzelteile bisher schon in der Fertigung sind, dahingehend abzuwandeln, daß bei dessen Stetigverhalten eine bessere Auflösung in Strom- und Kraftrichtung erzielt wird, so daß das System feinfühliger auf den Ansteuerstrom reagiert. Gleichzeitig soll der Elektromagnetantrieb auch bei hohem Druckniveau einsetzbar sein, und es soll eine höhere Lebensdauer der Biegefeder erzielt werden.The present invention has for its object to modify an economically inexpensive switching valve, the individual parts of which are already in production, in such a way that with its continuous behavior a better resolution in the current and force direction is achieved, so that the system reacts more sensitively to the control current . At the same time, the electromagnetic drive should also be able to be used at a high pressure level, and a longer service life of the spiral spring should be achieved.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine etwa topfförmig und zugleich konusförmig ausgebildete Kronenfeder außerhalb des Luftspaltes vorgesehen ist und zwischen dem festen und dem beweglichen Magnetanker eingespannt angeordnet ist, und zwar in Achsrichtung zwischen einer ersten festen Auflage und einer am beweglichen Magnetanker ringförmigen zweiten Auflage. Vorteilhafterweise wird hier der Luftspalt nicht beeinflußt und könnte sogar gegen Null gehen. Die erfindungsgemäße Kronenfeder ist überwiegend auf Knickbelastung im Sinne eines Euler schen Knickfalls beansprucht und besitzt aus diesem Grund eine höhere Lebensdauer. Vorteilhaft ist außerdem, daß der Einbauraum für die Kronenfeder nicht auf den Ankerdurchmesser begrenzt ist.The object is achieved according to the invention in that an approximately cup-shaped and at the same time cone-shaped crown spring is provided outside the air gap and is arranged clamped between the fixed and the movable magnet armature, namely in the axial direction between a first fixed support and an annular ring on the movable magnet armature Edition. The air gap is advantageously not influenced here and could even approach zero. The crown spring according to the invention is predominantly subjected to buckling stress in the sense of an Euler buckling and therefore has a longer service life. It is also advantageous that the installation space for the crown spring is not limited to the anchor diameter.

Nach weiteren Merkmalen ist vorgesehen, daß die Kronenfeder über den kreisförmig geschlossenen Umfang zwei oder mehr mit gleichen Abständen angeformte, von einer niedrigen Niveaulinie auf eine höhere Niveaulinie verlaufende Kuppen aufweist. Über die Form der Kuppen und deren Übergänge ist das Biegeverhalten der Kronenfeder und damit der Verlauf der Kraftkennlinie günstig zu beeinflussen.According to further features, it is provided that the crown spring has two or more domes formed on the circular closed circumference with the same spacing and extending from a low level line to a higher level line. The bending behavior of the crown spring and thus the course of the force characteristic can be favorably influenced via the shape of the crests and their transitions.

In diesem Sinne ist die Erfindung dahingehend weitergebildet, daß ausgehend von der niedrigen Niveaulinie ein progressiv mit Wendepunkt geformter Übergang zwischen den Kuppen angeformt ist. Dadurch werden die angestrebten Kraftkennlinienverläufe stabilisiert.In this sense, the invention is further developed in such a way that, starting from the low level line, a transition between the crests is formed progressively with a turning point. As a result, the desired force characteristic curves are stabilized.

Vorteilhaft ist außerdem, daß die erste feste Auflage als zylindrischer Hohlraum mit ringförmigem Absatz angeordnet ist und die zweite, bewegliche Auflage an einem ringförmigen Absatz des beweglichen Magnetankers vorgesehen ist.It is also advantageous that the first fixed support is arranged as a cylindrical cavity with an annular shoulder and the second, movable support is provided on an annular shoulder of the movable magnet armature.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen

Fig. 1
einen axialen Querschnitt durch ein Elektromagnetventil mit dem Elektromagnetantrieb,
Fig. 2
ein Strom-Hub-Diagramm, das den Verlauf verschiedener Bestromungskurven und der Kraftkennlinienfeder zeigt,
Fig. 3a
eine Abwicklung der Kronenfeder,
Fig. 3b
die Kronenfeder im Kreis geschlossen,
Fig. 4a
eine alternative Ausführung der Kronenfeder in abgewickeltem Zustand und
Fig. 4b
die Kronenfeder gemäß Fig. 4a im kreisgeschlossenen Zustand.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it
Fig. 1
an axial cross section through an electromagnetic valve with the electromagnetic drive,
Fig. 2
a current-stroke diagram that shows the course of various current supply curves and the force characteristic spring,
Fig. 3a
a development of the crown spring,
Fig. 3b
the crown feather closed in a circle,
Fig. 4a
an alternative version of the crown spring in the unwound state and
Fig. 4b
the crown spring according to Fig. 4a in the circular closed state.

Der Elektromagnetantrieb ist als Elektromagnetventil mit einem Elektromagnetgehäuse 1 und einem Ventilsitzgehäuse 2 ausgebildet (Fig. 1). Innerhalb des Elektromagnetgehäuses 2 ist ein Ankerrohr 3 gegen das jeweilige fluidische Medium mittels Ankerrohrdichtungen 4 und 5 abgedichtet. Im Ankerrohr 3 selbst ist ein Ankerrohrdichtelement 6 eingebaut, das nach oben mit einem Medienauslaß zusammenwirkt. Im unteren Teil des Ankerrohrs 3 wirkt ein mit Hinterschnitt eingelassenes Ventildichtelement 7 mit dem eigentlichen Ventilsitz 8 zusammen, der den Medienfluß zu einem rechten Medienleitungsanschluß 9 mit einem ersten Dichtring 10, einer Spannhülse 11 und/oder zu einem linken Medienleitungsanschluß 12 mit einem zweiten Dichtring 13 und einer Spannhülse 14 steuert.The electromagnetic drive is designed as an electromagnetic valve with an electromagnetic housing 1 and a valve seat housing 2 (FIG. 1). Within the electromagnet housing 2, an armature tube 3 is sealed against the respective fluid medium by means of armature tube seals 4 and 5. In the anchor tube 3 itself, an anchor tube sealing element 6 is installed, which cooperates upwards with a media outlet. In the lower part of the anchor tube 3, an undercut valve sealing element 7 interacts with the actual valve seat 8, which controls the media flow to a right media line connection 9 with a first sealing ring 10, an adapter sleeve 11 and / or to a left media line connection 12 with a second sealing ring 13 and an adapter sleeve 14 controls.

Das Ankerrohr 3 ist in einer Lagerbuchse 15 gelagert. Im Elektromagnetgehäuse 1 befinden sich wie üblich ein Magnetjoch 16, die Elektromagnetspule 17 mit einem Stromanschluß 17a. Zentrisch und koaxial liegen sich innerhalb der Elektromagnetspule 17 ein fester Magnetanker 18 mit einem Ankerdichtring 18a und ein beweglicher Magnetanker 19 gegenüber und bilden zwischen sich einen Luftspalt 20. Abgehende Medienströmung (z.B. Entlüftung oder Druckentlastung) verlaufen durch das Innere des feststehenden Magnetankers 18 und durch einen Schalldämpfer 21.
die in Fig. 2 dargestellte Schar aus Stromverlaufskurven und einem maximalen Strom Imax und der erzeugten Kraft F führt bei der Anwendung einer Biegefeder 22 in Form einer Kronfeder 22a mit einem kreisförmig geschlossenen Umfang 22b in Achrichtung 23 zu der dick gezeichneten Kraftfederkennlinie. Wie ersichtlich, verläuft diese Kraftfederkennlinie mit ähnlicher Progression wie der Strom I. Daher wird durch die Kronenfeder 22a ohne Luftspaltbeeinflussung eine bessere Auflösung des Stroms I und der Hubkraft F und damit ein feinfühligeres System der Ansteuerung erzielt, ohne daß der Einbauraum der Biegefeder 22 auf den Ankerdurchmesser begrenzt wäre. Der Nutzbereich ( I nutz /I max = oder >0,5

Figure imgb0001
) wird dadurch ebenfalls erhöht.The anchor tube 3 is mounted in a bearing bush 15. As usual, there is a magnetic yoke 16 in the electromagnetic housing 1, the electromagnetic coil 17 with a current connection 17a. Centrally and coaxially, a fixed magnet armature 18 with an armature sealing ring 18a and a movable magnet armature 19 lie opposite one another within the electromagnet coil 17 and form an air gap 20 between them Silencer 21.
the family of current curves shown in FIG. 2 and a maximum current I max and the generated force F leads to the thick-drawn force spring characteristic when using a spiral spring 22 in the form of a crown spring 22a with a circularly closed circumference 22b in the axial direction 23. As can be seen, this force spring characteristic curve has a progression similar to that of the current I. Therefore, the crown spring 22a improves the resolution of the current I and without influencing the air gap the lifting force F and thus a more sensitive system of control is achieved without the installation space of the spiral spring 22 being limited to the armature diameter. The usable area ( I. use / I Max = or> 0.5
Figure imgb0001
 ) is also increased.

Die etwa topfförmig und zugleich konusförmig ausgebildete Kronenfeder 22a, die außerhalb des Luftspaltes 20 vorgesehen ist, liegt zwischen dem festen Magnetanker 18 und dem beweglichen Anker 19 eingespannt. In Achsrichtung 23 befindet sich die Kronenfeder 22a zwischen einer ersten festen Auflage 24 und einer am beweglichen Magnetanker 19 zweiten ringförmigen Auflage 25.The approximately cup-shaped and at the same time cone-shaped crown spring 22a, which is provided outside the air gap 20, is clamped between the fixed magnet armature 18 and the movable armature 19. In the axial direction 23, the crown spring 22a is located between a first fixed support 24 and a second annular support 25 on the movable magnet armature 19.

In den Fig. 3a, 3b, 4a und 4b sind solche Kronenfedern 22a dargestellt. Die Kronenfeder 22a weist jeweils über den kreisförmig geschlossenen Umfang 22b zwei oder mehrere mit gleichen Abständen angeformte (ausgestanzte), von einer niedrigen Niveaulinie 26 ausgehend auf eine höhere Niveaulinie 27 verlaufende Kuppen 29 auf. Ausgehend von der niedrigeren Niveaulinie 27 ist von einem Wendepunkt 28 progressiv ein Übergang 30 zwischen den Kuppen 29 gestaltet. Die erste feste Auflage 24 ist als zylindrischer Hohlraum 31 mit einem ringförmigen Absatz 31a gebildet und die zweite bewegliche Auflage 25 ist an einem ringförmigen Absatz 32 des beweglichen Magnetankers 19 abgestützt.3a, 3b, 4a and 4b, such crown springs 22a are shown. The crown spring 22a in each case has two or more domes 29 formed (punched out) with the same spacing and extending from a low level line 26 to a higher level line 27 over the circularly closed circumference 22b. Starting from the lower level line 27, a transition 30 between the crests 29 is progressively designed from a turning point 28. The first fixed support 24 is formed as a cylindrical cavity 31 with an annular shoulder 31a and the second movable support 25 is supported on an annular shoulder 32 of the movable magnet armature 19.

BezugszeichenlisteReference list

11
ElektromagnetgehäuseElectromagnet housing
22nd
VentilsitzgehäuseValve seat housing
33rd
AnkerrohrAnchor tube
44th
AnkerrohrdichtungAnchor pipe seal
55
AnkerrohrdichtungAnchor pipe seal
66
AnkerrohrdichtelementAnchor pipe sealing element
77
VentildichtelementValve sealing element
88th
VentilsitzValve seat
99
Medienleitungsanschluß, rechtsMedia line connection, right
1010th
erster Dichtringfirst sealing ring
1111
SpannhülseAdapter sleeve
1212th
Medienleitungsanschluß, linksMedia line connection, left
1313
zweiter Dichtringsecond sealing ring
1414
SpannhülseAdapter sleeve
1515
LagerbuchseBearing bush
1616
MagnetjochMagnetic yoke
1717th
ElektromagnetspuleElectromagnetic coil
17a17a
StromanschlußPower connection
1818th
fester Magnetankerfixed magnetic anchor
18a18a
AnkerdichtungAnchor gasket
1919th
beweglicher Magnetankermovable magnetic anchor
2020th
LuftspaltAir gap
2121
SchalldämpferSilencer
2222
BiegefederSpiral spring
22a22a
KronenfederCrown feather
22b22b
kreisförmig geschlossener Umfangcircular closed circumference
2323
AchsrichtungAxis direction
2424th
erste, feste Auflagefirst, fixed edition
2525th
zweite, bewegliche Auflagesecond, movable edition
2626
niedrige Niveaulinielow level line
2727
höhere Niveauliniehigher level line
2828
WendepunktTurning point
2929
KuppenKnolls
3030th
Übergangcrossing
3131
zylindrischer Hohlraumcylindrical cavity
31a31a
ringförmiger Absatzannular heel
3232
ringförmiger Absatzannular heel

Claims (4)

Elektromagnetantrieb, insbesondere für Elektromagnetventile als Stellglieder für Fluide, mit einer Elektromagnetspule und einem Magnetjoch, einem zur Elektromagnetspule zentrischen, festen und einem zentrischen, koaxialen beweglichen Magnetanker, zwischen denen ein veränderlicher Luftspalt besteht, wobei der Verlauf der Anzugskraft des Elektromagneten in Abhängigkeit der Luftspalteinstellung zwischen dem festen und dem beweglichen Magnetanker bei unterschiedlichen Werten des Erregerstroms zusammen mit der Kraftkennlinie einer Biegefeder als Arbeitspunkt der Hubkraftkennlinie des beweglichen Magnetankers festlegbar ist und der bewegliche Magnetanker, an dem der Elektromagnetspule abgewandten Ende eine Ventildichtung trägt, die mit einem Ventilsitz eines Medienleitungsanschlusses zusammenwirkt,
dadurch gekennzeichnet,
daß eine etwa topfförmig und zugleich konusförmig ausgebildete Kronenfeder (22a), außerhalb des Luftspaltes (20) vorgesehen ist und zwischen dem festen und dem beweglichen Magnetanker (18,19) eingespannt angeordnet ist, und zwar in Achsrichtung (23) zwischen einer ersten festen Auflage (24) und einer am beweglichen Magnetanker (19) ringförmigen zweiten Auflage (25).Electromagnetic drive, in particular for solenoid valves as actuators for fluids, with an electromagnetic coil and a magnetic yoke, a fixed, and a central, coaxial movable magnet armature centered on the solenoid coil, between which there is a variable air gap, the course of the attraction force of the electromagnet depending on the air gap setting between the fixed and the movable magnet armature at different values of the excitation current together with the force characteristic of a spiral spring can be defined as the working point of the lifting force characteristic of the movable magnet armature and the movable magnet armature, on the end facing away from the solenoid coil, carries a valve seal which interacts with a valve seat of a media line connection,
characterized,
that an approximately cup-shaped and at the same time conical crown spring (22a) is provided outside the air gap (20) and is arranged clamped between the fixed and the movable magnet armature (18, 19), namely in the axial direction (23) between a first fixed support (24) and on the movable magnet armature (19) annular second support (25). Elektromagnetantrieb nach Anspruch 1,
dadurch gekennzeichnet,
daß die Kronenfeder (22a) über den kreisförmig geschlossenen Umfang (22b) zwei oder mehrere mit gleichen Abständen angeformte, von einer niedrigen Niveaulinie(26) auf eine höhere Niveaulinie (27) verlaufende Kuppen (29) aufweist.Electromagnetic drive according to claim 1,
characterized,
that the crown spring (22a) has, over the circularly closed circumference (22b), two or more molded-on domes (29) extending from a low level line (26) to a higher level line (27) at equal distances. Elektromagnetantrieb nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet,
daß ausgehend von der niedrigen Niveaulinie (27) ein progressiv mit Wendepunkt (28) geformter Übergang (30) zwischen den Kuppen (29) angeformt ist.Electromagnetic drive according to one of claims 1 or 2,
characterized,
that, starting from the low level line (27), a transition (30) between the crests (29) is formed progressively with a turning point (28). Elektromagnetantrieb nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die erste feste Auflage (24) als zylindrischer Hohlraum (31) mit ringförmigem Absatz (31a) angeordnet ist und die zweite, bewegliche Auflage (25) an einem ringförmigen Absatz (32) des beweglichen Magnetankers (19) vorgesehen ist.Electromagnetic drive according to one of claims 1 to 3,
characterized,
that the first fixed support (24) is arranged as a cylindrical cavity (31) with an annular shoulder (31a) and the second, movable support (25) is provided on an annular shoulder (32) of the movable magnet armature (19).
EP95250180A 1994-08-09 1995-07-25 Solenoid valve as actuator for fluids Expired - Lifetime EP0696809B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4429402A DE4429402C2 (en) 1994-08-09 1994-08-09 Electromagnetic drive, in particular for solenoid valves as actuators for fluids
DE4429402 1994-08-09

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EP0696809A2 true EP0696809A2 (en) 1996-02-14
EP0696809A3 EP0696809A3 (en) 1996-04-03
EP0696809B1 EP0696809B1 (en) 1998-07-01

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539145A1 (en) 1985-11-05 1987-05-07 Honeywell Bv Magnetic drive, especially for solenoid valves and/or pressure regulators

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE662027C (en) * 1936-04-05 1938-07-04 Heinrich List Dipl Ing Electromagnet with a device for converting the rising into an optionally determinable, for example constant, static force-displacement diagram
DE3310997A1 (en) * 1983-03-25 1984-09-27 Herion-Werke Kg, 7012 Fellbach Magnetic valve
US4635683A (en) * 1985-10-03 1987-01-13 Ford Motor Company Variable force solenoid
DE4132931A1 (en) * 1991-10-04 1993-04-08 Messer Griesheim Gmbh SOLENOID VALVE FOR LOW-COLD LIQUID GASES
DE4244444A1 (en) * 1992-12-23 1994-07-07 Mannesmann Ag Electromagnetic valve with electric current feed for electromagnetic coil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539145A1 (en) 1985-11-05 1987-05-07 Honeywell Bv Magnetic drive, especially for solenoid valves and/or pressure regulators

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DE4429402C2 (en) 1996-07-18
DE59502676D1 (en) 1998-08-06
DE4429402A1 (en) 1996-02-15
EP0696809A3 (en) 1996-04-03
EP0696809B1 (en) 1998-07-01

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