EP3401936B1 - Dispositif de réglage électromagnétique - Google Patents

Dispositif de réglage électromagnétique Download PDF

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Publication number
EP3401936B1
EP3401936B1 EP18180013.7A EP18180013A EP3401936B1 EP 3401936 B1 EP3401936 B1 EP 3401936B1 EP 18180013 A EP18180013 A EP 18180013A EP 3401936 B1 EP3401936 B1 EP 3401936B1
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EP
European Patent Office
Prior art keywords
unit
anchor
profile section
realized
anchor unit
Prior art date
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Active
Application number
EP18180013.7A
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German (de)
English (en)
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EP3401936A1 (fr
Inventor
Oliver Thode
Viktor Raff
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.)
ETO Magnetic GmbH
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ETO Magnetic GmbH
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Application filed by ETO Magnetic GmbH filed Critical ETO Magnetic GmbH
Publication of EP3401936A1 publication Critical patent/EP3401936A1/fr
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Classifications

    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • 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
    • H01F7/081—Magnetic constructions
    • 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 present invention relates to an electromagnetic actuating device according to the preamble of the main claim.
  • Such a device is, for example, a solenoid valve device from the DE 198 48 919 A1 known.
  • a solenoid valve device from the DE 198 48 919 A1 known.
  • an armature unit guided radially symmetrically in the coil interior opens and closes or closes a valve seat for the fluid to be controlled.
  • the armature unit (which generally has a cylindrical armature body) moves along the axial direction relative to a stationary core unit, which is part of the magnetic circuit and, through its design, influences the movement behavior, in particular a magnetic armature force of the armature unit.
  • a stationary core unit which is part of the magnetic circuit and, through its design, influences the movement behavior, in particular a magnetic armature force of the armature unit.
  • the prior art device for influencing the movement behavior or force curve of the armature movement in the transition area between the (movable) armature unit and the (stationary) core unit shows a so-called control cone area (control area), which extends along the axial direction in an area of the Armature stroke (namely the area immediately after the armature unit is released from the core unit) influences the magnetic flux in the magnetic circuit between the armature unit, core unit and the other magnetic circuit elements involved.
  • control area control cone area
  • this control area control cone area
  • the movement behavior of the armature unit, in particular a course of the magnetic force along the movement stroke (movement stroke path) can be specifically influenced, for example, strengthening or weakening it comparatively or selectively.
  • the axial overlap of the armature unit and control unit in the control area which is assumed to be known, also has potential disadvantages, in particular with regard to the wear and life characteristics of electromagnetic actuating devices designed in this way.
  • This (in the case of radially symmetrical arrangements radial) magnetic force component causes disadvantageous magnetic transverse forces which have a disadvantageous effect in practice or in particular in connection with frequent movement cycles or long operating times.
  • Such an anchor unit in the manner of a diametrical two-point support at respective inner positions of the anchor guide), which is at an angle in the scope of the clearance fit, initially leads to the core unit and anchor unit (and therefore the profile sections forming the control area) no longer exactly aligned, thus resulting in radial air gaps of different sizes in the circumferential direction (more precisely: sections of a circumferential air gap).
  • the consequence is a premature failure, especially in systems with a control cone area that are optimized in terms of size and energy consumption, especially if the anchor unit is provided with sliding coatings made of PTFE or MoS 2 in an otherwise known manner and no (but again complex) slide film for guiding the anchor is used.
  • the object of the present invention is therefore to improve a generic electromagnetic actuating device with regard to its operating and wear behavior, in particular to reduce disadvantageous transverse or normal forces which promote tilting of the armature unit, and thus within the scope of the axially overlapping control area systems to combine favorable magnetic movement behavior and energy optimization with protection against unwanted wear due to disadvantageous friction.
  • control area control cone area
  • the control area between the armature unit and the core unit is configured by designing the (magnetically) flux-effective cross sections of the first or second profile section such that, in the usual operating current causing the armature unit to move, the Flow and force compensation in the manner of a regulatory effect is achieved.
  • the profile sections are designed in such a way that, in the event of tilting or deflection in a first region of the associated (radial) air gap, the increased transverse force (normal force) is compensated for by an associated magnetic flux (corresponding to the shortened air gap) Flooding) a magnetic resistance increases in this area.
  • the profile sections are designed with regard to their flow-effective material cross-section so that in a correspondingly tilted state of the armature unit in the (radial) narrow area of the air gap, the resulting increased flooding leads to saturation, thus resulting in a flux-effective magnetic resistance, which then occurs leads to the magnetic flow being displaced or shifted to other areas of the air gap (back).
  • This then has an effect which directly reduces the disadvantageous normal or transverse force, with the advantageous consequence of lower friction, correspondingly lower energy consumption and reduced wear.
  • the principle according to the invention leads to the fact that the usual, movement-typical operating currents for the coil unit there is an effective shift of the shear force-promoting magnetic flux from the area of the shortest air gap to other areas, since the magnetic saturation effect - correspondingly compensatory - offers a higher magnetic resistance.
  • the principle according to the invention can thus be realized by suitable configuration of the profile sections, which are then adapted to a flooding to be expected in typical operating conditions, in such a way that they specifically one with a radially opposite minimized air gap experienced magnetic flux resistance increase through magnetic saturation.
  • first or second profile section a tooth or cam shape in longitudinal section with suitably conical inclination angles which, in the case of the advantageous radially symmetrical design, accordingly form as an annular projection (or interact with an appropriately adapted annular groove).
  • a so-called inner cone is provided.
  • a narrow cone ring (as a second profile section) of the core unit which tends to become magnetically saturated due to its flow-effective cross-sectional design, dips into an internal ring shoulder (cone shoulder) at the front end of the anchor unit. Due to the narrow cone-shaped ring heel, the associated anchor section reacts sensitively to changes in the magnetic flux and generates compensating (uprighting) magnetic forces according to the above-described mechanism of action, which counteract the disadvantageous anchor inclination.
  • the present invention advantageously reduces disadvantageous friction between the armature unit and armature guide, so that energy and magnetic force are optimized, and wear is counteracted.
  • the present invention is thus advantageously suitable, for example, for realizing valve devices, more preferably pneumatic valve devices, but is not restricted to this field of application. Rather, the advantage of the present invention can be used favorably in all forms of realization of electromagnetic actuating devices, in which - due to the design or the play - a tilting or deflecting of the armature unit in an armature guide causes disadvantageous friction or wear and is used anyway to influence the magnetic force curve Profile elements in the control area (control cone area) can be dimensioned and used to implement the compensation behavior advantageous according to the invention.
  • Fig. 3 illustrates the application context of the present invention; shown is a structurally otherwise known 2/2-way valve which is used in the motor vehicle sector and is provided with a cone control in the interaction between the anchor unit and the cone unit.
  • FIG Fig. 3 which is to be considered as belonging to the present invention with its features in the application context outside the control range, a housing 10 which carries a stationary winding 14 held on a coil carrier 12.
  • an anchor unit 20 along a longitudinal axis 18 of movement guided, which has a cylindrical outer contour, is supported against the force of a compression spring 22 in the axial direction from a stationary core region 24 and, opposite the core region 24, has a valve rubber insert 26 which is used to close a valve seat 28 in response to an axial Movement of the armature unit 20 is formed.
  • the valve effect occurs between a supply connection 30 and a working connection 32.
  • the armature unit 20 is provided on the shell side in an otherwise known manner by means of a PTFE or MoS 2 sliding coating; there is no slide film for storing the anchor unit.
  • the armature unit 20 moves along the longitudinal movement axis 18 in the vertical direction (Z in Fig. 3 ).
  • the directions X, Y orthogonal to this axis are drawn accordingly.
  • a control area (control cone area) in the magnetic transition between the core unit 24 and the sectionally hollow cylindrical armature unit 20 is in the enlarged, half longitudinal sectional view of FIG Fig. 1 illustrates, whereby, in the direct comparison, the embodiment of Fig. 4 shows a control area which is not optimized and advantageous in the sense of the invention.
  • the core region has an annular projection 34, which extends from the engagement-side end face of the core unit 24, which is provided inwards relative to an inner ring shoulder 36 of the associated engagement-side end region of the anchor unit 20 in the direction of the axis 18.
  • This control area in the state of the armature unit tilted to the right (or clockwise), clarified in this regard, is both the outward flank of the annular projection 34 and the inward flank of the annular groove 36, relative to the longitudinal axis 18, by a cone angle of approximately 8 ° inclined ( Within the scope of the invention, angles between 3 ° and 40 °, preferably between 5 ° and 20 °, more preferably between 7 ° and 15 °, have proven to be favorable and preferred). In the context of the invention, these cone angles are also configured identically, so that when the anchor unit is in a central position (ie untilted, in contrast to the illustration of FIG Fig. 2 ) the flank angles match.
  • the one-piece, annular and conical projection 34 is now designed such that saturation then occurs in the event of a typical operating current through the coil unit 12, 14 (or a flooding thereby occurring in the transition region to the armature unit, in particular in the vertical air gap 40) occurs when this air gap (40 'in Fig. 2 ) becomes very narrow in the left-hand area, as a result of which the magnetic flux in this area and through the associated section of the projection 34 increases, which means that, due to the comparatively narrow ring diameter, the saturation takes place primarily here.
  • this then advantageously leads to the fact that, for example in the (radially) opposite, right-hand area, a magnetic flooding increases over the air gap area 40 ′′ there, due to the saturation in the left-hand area of the annular projection 34, magnetic flux is displaced or displaced outside of this area.
  • the ring projection 34 which is designed here specifically to bring about saturation, forms the basis for a regulating or compensating system with regard to that as a profile section of the core unit lateral forces to be overcome or mitigated according to the task.
  • the present invention is not limited to the specific embodiment shown, rather there are numerous ways and possibilities within the scope of the present invention of the control area by suitable profiling of the form cone-side and the anchor-side end section.
  • the contour of the Fig. 2 (The ring protrusion on the core side is located radially on the inside) can be reversed, just as there can be a profiling on the armature side (or on both sides) that is optimized for fast magnetic saturation.
  • an outer circumferential ring shoulder 50 on the outer jacket side has proven to be advantageous, since this additionally reduced disadvantageous friction on the surrounding anchor guide.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)

Claims (8)

  1. Dispositif de positionnement électromagnétique ayant une unité d'ancrage (20), qui peut être bougée dans un sens axial autour d'une course de mouvement relative à une unité de noyau (24) stationnaire et en réponse à une alimentation électrique d'une unité de bobine (14) par un courant opérative
    et qui, à un extrémité, interagit de manière magnétique avec l'unité de noyau par une zone de contrôle se superposant axialement le long de la course de mouvement au moins en parties ladite zone de contrôle comprenant une première partie de profile (34, 44) comme une partie de l'unité d'ancrage et, comme une partie de l'unité de noyau, une deuxième partie de profil (36, 46) ayant un espace d'air (40) réalisé entre ces deux et réalisant une expansion perpendiculaire au sens axial,
    une coupe transversale de la première et de la deuxième partie de profil, qui est effective au flux pour un flux magnétique de l'alimentation électrique par le courant opérative s'écoulant par l'espace d'air, étant réalisée de telle manière qu'en réponse à une réduction de l'expansion d'espace d'air causé par une inclinaison et/ou une déflexion de l'unité d'ancrage (20) du sens axial, un résistance de flux magnétique de la première et/ou de la deuxième partie de profil étant augmenté dans la zone de la réduction par de la saturation magnétique et une force opposée l'inclinaison et/ou la déflexion agissant sur l'unité d'ancrage (20),
    l'unité d'ancrage (20) comprenant un rebord annulaire intérieur conique pour réaliser la première partie de profil,
    caractérisé en ce que
    l'unité d'ancrage (20) forme un outre rebord annulaire circonférentiel vers l'unité de noyau sur l'extérieur.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'unité d'ancrage et l'unité de noyau sont réalisé symétriques radialement autour d'un axe moyen s'étendant le long du sens axial et en ce que la première et/ou la deuxième partie de profil appuient préférablement en une pièce fait d'un corps d'ancrage ou de noyau et sont réalisés de manière s'étendant radialement,
    en étant inclinés ou défléchis, l'espace d'air s'étendant radialement entre la première et la deuxième partie de profil est réduit dans une partie d'espace d'air et élargi dans une partie d'espace d'air opposé par rapport à l'axe moyen.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que
    la première et/ou la deuxième partie de profil comprend/comprennent une forme longitudinal de dents et/ou de cames, qui est réalisée comme une protrusion annulaire quand l'unité d'ancrage et de noyau sont réalisés symétriques radialement.
  4. Dispositif selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la première et la deuxième partie de profil limitent l'espace d'air par de parties de paroi coniques inclinées vers le sens axial.
  5. Dispositif selon la revendication 4,
    caractérisé en ce qu'
    un angle de cône des parties de paroi de la première et/ou de la deuxième partie de profil est réalisé de telle manière que les parties de paroi s'étendent parallèlement les unes aux autres quand la position moyenne de l'unité d'ancrage n'est pas inclinée ou n'est pas défléchie et/ou qu'un angle réalisé entre les parties de paroi est < 5°, préférablement moins que < 3°.
  6. Dispositif selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    l'unité d'ancrage comprenant un corps d'ancrage cylindrique ne comprend pas un guide de poussoir ou un montage de poussoir et/ou est montée sans de moyens de feuille, en particulier sans de feuille de glissement, sur l'extérieur.
  7. Usage d'un dispositif de positionnement électromagnétique selon l'une quelconque des revendications 1 à 6 pour réaliser un dispositif de vanne, en particulier un dispositif de vanne pneumatique, dans lequel un flux de fluide est régulé par le mouvement de l'unité d'ancrage.
  8. Procédé pour l'opération d'un dispositif de positionnement électromagnétique selon l'une quelconque des revendications 1 à 6,
    caractérisé par les étapes suivantes :
    • alimenter électriquement l'unité de bobine pour provoquer un mouvement de l'unité d'ancrage en le sens axial,
    • provoquer une force, en particulier une force transversale ou une force normale, agissant sur l'unité d'ancrage contre l'inclinaison ou la déflexion du sens axial quand il y a une superposition entre l'unité d'ancrage et l'unité de noyau dans la zone de contrôle.
EP18180013.7A 2010-10-20 2011-10-20 Dispositif de réglage électromagnétique Active EP3401936B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010048808A DE102010048808A1 (de) 2010-10-20 2010-10-20 Elektromagnetische Stellvorrichtung
PCT/EP2011/068380 WO2012052528A2 (fr) 2010-10-20 2011-10-20 Dispositif de réglage électromagnétique
EP11833885.4A EP2630647B1 (fr) 2010-10-20 2011-10-20 Dispositif d'actionneur électromagnétique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP11833885.4A Division EP2630647B1 (fr) 2010-10-20 2011-10-20 Dispositif d'actionneur électromagnétique
EP11833885.4A Division-Into EP2630647B1 (fr) 2010-10-20 2011-10-20 Dispositif d'actionneur électromagnétique

Publications (2)

Publication Number Publication Date
EP3401936A1 EP3401936A1 (fr) 2018-11-14
EP3401936B1 true EP3401936B1 (fr) 2019-12-25

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Application Number Title Priority Date Filing Date
EP18180022.8A Active EP3399529B1 (fr) 2010-10-20 2011-10-20 Dispositif de réglage électromagnétique
EP18180013.7A Active EP3401936B1 (fr) 2010-10-20 2011-10-20 Dispositif de réglage électromagnétique
EP11833885.4A Active EP2630647B1 (fr) 2010-10-20 2011-10-20 Dispositif d'actionneur électromagnétique

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EP18180022.8A Active EP3399529B1 (fr) 2010-10-20 2011-10-20 Dispositif de réglage électromagnétique

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Application Number Title Priority Date Filing Date
EP11833885.4A Active EP2630647B1 (fr) 2010-10-20 2011-10-20 Dispositif d'actionneur électromagnétique

Country Status (5)

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US (1) US9236175B2 (fr)
EP (3) EP3399529B1 (fr)
CN (1) CN103282979B (fr)
DE (1) DE102010048808A1 (fr)
WO (1) WO2012052528A2 (fr)

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DE102014222504A1 (de) * 2014-11-04 2016-05-04 Robert Bosch Gmbh Ventileinrichtung
JP7023737B2 (ja) * 2018-02-21 2022-02-22 株式会社鷺宮製作所 電動弁および冷凍サイクルシステム
EP3758028B1 (fr) * 2019-06-24 2023-02-15 Otis Elevator Company Actionneur
EP4024417A4 (fr) * 2019-08-28 2023-05-10 Harmonic Drive Systems Inc. Solénoïde symétrique
DE102020132351A1 (de) 2020-12-04 2022-06-09 Eto Magnetic Gmbh Elektromagnetische Aktorvorrichtung, Magnetventil und Verfahren zum Betrieb der elektromagnetischen Aktorvorrichtung

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DE19848919A1 (de) 1998-10-23 2000-04-27 Elektroteile Gmbh Magnetventil
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EBERHARD KALLENBACH, RÜDIGER EICK , PEER QUENDT, TOM STRÖHLA , KARSTEN FEINDT, MATTHIAS KALLENBACH: "ELEKTROMAGNETE, GRUNDLAGEN, BERECHNUNG UND ANWENDUNGEN, 2. Auflage", December 2003, B. G.TEUBNER VERLAG / GWV FACHVERLAGE GMBH, Wiesbaden, article "3.5 Magnetkraftkennlinien", pages: 71 - 85, XP055737682
ERICH JASSE: "Grundlagen für die Berechnung des magnetischen Feldes und der darin wirksamen Kräfte , insbesondere an Eisenkörpern", 1930, VERLAG VON JULIUS SPRINGER, Berlin, pages: IV-VI, 1 - 198

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Publication number Publication date
EP3401936A1 (fr) 2018-11-14
EP2630647A2 (fr) 2013-08-28
DE102010048808A1 (de) 2012-04-26
CN103282979B (zh) 2016-10-12
EP3399529B1 (fr) 2019-12-25
US20130265125A1 (en) 2013-10-10
WO2012052528A3 (fr) 2012-11-22
WO2012052528A2 (fr) 2012-04-26
US9236175B2 (en) 2016-01-12
EP2630647B1 (fr) 2018-12-12
EP3399529A1 (fr) 2018-11-07
CN103282979A (zh) 2013-09-04

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