EP0527393B1 - Dispositif d'électrovanne - Google Patents

Dispositif d'électrovanne Download PDF

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Publication number
EP0527393B1
EP0527393B1 EP92112951A EP92112951A EP0527393B1 EP 0527393 B1 EP0527393 B1 EP 0527393B1 EP 92112951 A EP92112951 A EP 92112951A EP 92112951 A EP92112951 A EP 92112951A EP 0527393 B1 EP0527393 B1 EP 0527393B1
Authority
EP
European Patent Office
Prior art keywords
valve
armature
magnet
solenoid valve
valve apparatus
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.)
Expired - Lifetime
Application number
EP92112951A
Other languages
German (de)
English (en)
Other versions
EP0527393A1 (fr
Inventor
Rudolf Brunner Obering
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.)
Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
Original Assignee
Heilmeier and Weinlein Fabrik fuer Oel Hydraulik 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.)
Filing date
Publication date
Application filed by Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG filed Critical Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
Publication of EP0527393A1 publication Critical patent/EP0527393A1/fr
Application granted granted Critical
Publication of EP0527393B1 publication Critical patent/EP0527393B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
    • 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
    • H01F7/1607—Armatures entering the winding

Definitions

  • the invention relates to a solenoid valve device specified in the preamble of claim 1.
  • the two valve tappets are acted upon by a transverse yoke lying on the valve tappet ends, on which the shaft, which is structurally separate from the transverse yoke, engages in a central recess.
  • the shaft is pressurized by a spring over the armature and guided in the magnetic core. Since the transverse yoke can tip over, the times at which the two seat valves are actuated during an anchor stroke cannot be set.
  • the poppet valve that is currently providing the lower resistance is actuated first, if necessary completely. This can also result in an undesirable transverse load on the shaft.
  • the armature for each pair of poppet valves is designed as an armature disk, which is guided in the valve housing with an integrally molded shaft and with an axially spaced armature disk of a further pair of Seat valves form a unit.
  • the valve tappets of one pair of poppet valves engage with enlarged end plates in the cavities of the armature plate and are acted upon by the magnet by pulling.
  • one seat valve is in its shut-off position, the other, however, in its through position.
  • the open seat valve is opened further and the other seat valve is also opened.
  • the end plate of the valve tappet associated with the latter valve has a slight play in the central position relative to a counter surface of the armature plate. Because of the design, a very powerful and large-volume actuating magnet is required. In addition - since the armature disk is integrated with the shaft in the valve housing - the construction of the valve body is complex.
  • a plunger screwed into the armature penetrates the housing of the two seat valves.
  • a balance beam is provided, which acts on both valve tappets and is supported by a nut screwed onto the tappet. This results in sealing areas that are difficult to control and a large overall length.
  • the balance beam can tilt relative to the tappet, so that neither synchronous nor precisely timed actuation of the seat valves is guaranteed during an armature stroke.
  • the invention has for its object to provide a solenoid valve device of the type mentioned, which is compact and structurally simple and manages with a small and light actuating magnet, the times at which seat valves actuated during a magnetic stroke (opened or closed) be set exactly and reproducibly.
  • the transmission element integrated in the plunger magnet enables a compact and simple construction with resistant and simple sealing areas between the valve housing and the plunger magnet.
  • the one guided in the magnetic core against tilting The cross section actuates the two seat valves at precisely and reproducibly definable times during an anchor stroke, that is, regardless of whether the seat valves have different actuation resistances or not or whether a negative overlap is needed or not. It is also advantageous to avoid inhibiting forces during the movement of the transmission member, the tilt support of the cross member on the shaft between the free ends of the valve lifters and the armature.
  • a small, light and inexpensive plunger magnet can be used, because the lag means that the common plunger magnet provided for both seat valves only needs to actuate one seat valve after the other.
  • the lag in order to relieve the plunger magnet is achieved in a structurally simple manner in the embodiment according to claim 2.
  • the time or the position of the armature when the second seat valve is actuated can be precisely defined from the outset.
  • a rigid transmission member is provided, which is easy to manufacture (rotating part) and does not require rotation lock.
  • the embodiment according to claim 6 is useful.
  • the magnetic connection via the core is not impaired by the recess of the magnetic core.
  • the transmission member is mounted easily and still reliably secured against undesired tilting movements.
  • an inexpensive plunger magnet can be used which only needs to be liquid-tight and therefore does not require thick or heavy housing walls or housing parts. It is also corrosion-resistant. Instead of a liquid-tight immersion anchor magnet, a pressure-resistant one could also be used, which is to be exposed to the full working pressure.
  • a hydraulic control H according to FIG. 1 has a consumer V, for example a double-acting hydraulic cylinder 5.
  • the consumer V is connected to a solenoid valve device M via working lines 3, 4, to which a pressure line 1 and a return line 2 are connected.
  • the solenoid valve device M has two 4/2-way seat valves S, each of which has an actuating magnet 7, 7 '(plunger armature magnet) on its housing 6, 6'. In the illustrated shut-off positions, the valves are held by springs 8 when the actuating magnets 7, 7 'are not energized (position of the consumer V).
  • the actuating magnet 7 When the actuating magnet 7 is energized, the pressure line 1 is connected to the working line 3, while at the same time the working line 4 is connected to the return line 2.
  • the cylinder 5 is adjusted downwards. If, on the other hand, the actuating magnet 7 'is excited when the actuating magnet 7 is de-energized, then the pressure line 1 is connected to the working line 4 and the return line 2 to the working line 3. The cylinder 5 is after adjusted above. In both valves S, the actuating magnets are connected to the return line 2 via relief connections 2a.
  • FIG. 2 shows the structure of the left 4/2-way seat valve S from FIG. 1.
  • Two adjacent chambers 9, 10 are provided in the housing 6.
  • the return line is connected to a chamber part 31 of the left chamber 9, the working line 3 to the chamber part 31 of the right chamber 10.
  • the working line 4 is connected to the chamber 9, while the pressure line 1 is connected directly to the chamber 10.
  • Valve cartridges P are inserted (indicated by dashed lines) in the chambers 9, 10, the detailed structure of which will be explained with reference to FIG. 3.
  • Two parallel valve tappets 11, 12 protrude from the cartridges P on a housing side 13.
  • the actuating magnet 7 is fixed in a sealed manner with its housing 18.
  • the actuating magnet 7 is a commercially available pressure-tight or liquid-tight wet plunger magnet.
  • a transmission member G is guided linearly, which consists of a shaft 23 and a lower cross part 24, which overlaps both valve lifters 11, 12.
  • the transmission member G can be mushroom-shaped as a rotating part.
  • the shaft 23 is slidably guided in a bore 21 of the core 17 by means of slide bearings 22 and is supported against tilting.
  • the cross part 24 is seated in the recess 20 of the core 17, into which the valve lifters 11, 12 also protrude.
  • Each cartridge P in FIG. 2 is a 2/2-way seat valve according to FIG. 3, the cartridge P being screwed into an internal thread 25 provided in the chamber 9 or 10.
  • the cartridge P has an upper part 26a and a lower part 26b.
  • a circumferential groove 27 is provided in the lower part 26b and is connected via a channel 28 to an internal valve chamber 29.
  • a valve element 32 is displaceable in the valve chamber 29, which carries a closing element 34 which cooperates with the valve seat 30 on a neck 33, expediently with a conical or spherical sealing surface.
  • the valve element 32 is acted upon by a closing spring 38 in the chamber part 31 via a ball 36 and a spring abutment 37.
  • the return line 2 is connected to the circumferential groove 27 of the working line 4 (see FIGS. 1 and 2).
  • a longitudinal channel 35 connects the chamber part 31 to a chamber 39 which contains a sealing insert 40 in the upper part 26a.
  • the valve tappet 11 passes through the sealing insert 40 and projects through a bore 41 in the upper part 26 and with its free end over the housing side 13.
  • valve is statically largely pressure-balanced, so that the valve element 32 is kept closed only by the force of the closing spring 38.
  • the valve is opened by pressing the valve tappet 11 from above.
  • the other cartridge P is of the same design.
  • Its valve lifter 12 also protrudes with its free end. In the embodiment shown, the valve tappet 12 protrudes by an amount X less than the valve tappet 11, which, if applicable, bears directly on the transverse part 24 (negative coverage).
  • the solenoid valve device M (Fig. 4), e.g. 1, has two 4/2-way seat valves in a common housing 42, to which the actuating magnets 7, 7 'housed in a common magnetic block 44 are fastened to the side of the housing to which the four Valve tappets 11, 12 are accessible.
  • the magnetic block 44 has relatively thin outer walls 43 and a thin partition 45 between the two actuating magnets 7, 7 '. Both actuating magnets 7, 7 'have in the core 17 a recess 20 for the transverse part 24 of the transmission member G, which acts on both valve lifters 11, 12 of a pair of the 4/2-way seat valves when the armature 15 is pulled down.
  • Fig. 2 can be viewed as a section in the plane II-II of Fig. 4.
  • each actuating magnet 7, 7 ' can be considered cheaper liquid-tight wet plunger magnet can be designed, the moderate pressures up to 10 bar without complaint coped with.
  • pressure-tight magnets that are exposed to the working pressure.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (8)

  1. Appareil à électrovanne (M), avec au moins deux distributeurs à siège juxtaposés dans une cage (6, 6', 42) et respectivement munis d'un poussoir de soupape (11, 12), mobile linéairement, et d'un aimant à noyau plongeur (7, 7') fixé sur la cage (6, 6', 42), avec un sens de course d'induit parallèle au sens de déplacement des poussoirs de soupape (11, 12), parallèles entre eux, les deux poussoirs (11, 12) pouvant être sollicités conjointement, au moyen d'un élément transversal (24), par l'induit (15) de ces aimants, à peu près orienté au centre entre les deux poussoirs (11, 12), élément transversal sur lequel le mouvement de course d'induit peut être transmis au moyen d'une tige (23), guidée dans un trou (29) du noyau d'aimant (17), caractérisé en ce que la tige (23), avec l'élément transversal (24), forme un organe de transmission (G) en T inversé, rigide, monobloc de préférence, et supporté dans le noyau d'aimant (17) sans possibilité de basculement, en ce que La tige (23) peut être directement sollicitée par l'induit (15), en ce que les deux poussoirs de soupape (11, 12) peuvent se déplacer par échelons, au moyen de l'élément transversal (24), entre des positions correspondantes aux positions de verrouillage et/ou de passage des deux distributeurs à siège et des positions correspondantes aux positions de passage et/ou de verrouillage des deux distributeurs à siège, l'un des poussoirs (12 ou 11) étant sollicité avec un décalage relatif par rapport à l'autre poussoir (11 ou 12), dans le cadre de la course d'induit.
  2. Appareil à électrovanne suivant la revendication 1, caractérisé en ce que les deux soupapes à siège sont largement compensées en pression et peuvent être respectivement maintenues dans leur position de verrouillage par un ressort de fermeture (28), dans le sens opposé au sens de la course d'induit, lors de l'excitation de l'aimant à noyau plongeur (7, 7'), et en ce que, dans la position de verrouillage des soupapes à siège, différentes distances (cote X) sont prévues entre les extrémités libres des deux poussoirs de soupape (11, 12) et leurs surfaces d'appui sur le support transversal (24).
  3. Appareil à électrovanne suivant l'une au moins des revendications 1 ou 2, caractérisé en ce que les deux poussoirs de soupape (11, 12) dépassent différemment loin de la surface (13) de la cage par leurs extrémités libres.
  4. Appareil à électrovanne suivant l'une des revendications 1 ou 2, caractérisé en ce que les deux poussoirs de soupape (11, 12) dépassent de la même distance de la surface (13) de la cage par leurs extrémités libres, et en ce que l'élément transversal (24) présente des surfaces d'appui différemment distantes des extrémités libres.
  5. Appareil à électrovanne suivant les revendications 1 à 4, caractérisé en ce que l'organe de transmission (G) est réalisé en forme de champignon, avec un élément transversal (24) en forme de disque.
  6. Appareil à électrovanne suivant l'une au moins des revendications 1 à 5, caractérisé en ce que l'élément transversal (24) est encastré dans un évidement (20) du noyau d'aimant (17).
  7. Appareil à électrovanne suivant la revendication 1, caractérisé en ce qu'un palier-guide (22) au moins, deux paliers lisses distants l'un de l'autre de préférence, est et/ou sont prévu(s) pour la tige (23) dans le trou (21) du noyau d'aimant (17).
  8. Appareil à électrovanne suivant l'une au moins des revendications 1 à 7, caractérisé en ce que chaque aimant à noyau plongeur (7, 7') est un aimant humide étanche aux liquides.
EP92112951A 1991-08-12 1992-07-29 Dispositif d'électrovanne Expired - Lifetime EP0527393B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9109976U 1991-08-12
DE9109976U DE9109976U1 (fr) 1991-08-12 1991-08-12

Publications (2)

Publication Number Publication Date
EP0527393A1 EP0527393A1 (fr) 1993-02-17
EP0527393B1 true EP0527393B1 (fr) 1996-03-27

Family

ID=6870201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112951A Expired - Lifetime EP0527393B1 (fr) 1991-08-12 1992-07-29 Dispositif d'électrovanne

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EP (1) EP0527393B1 (fr)
AT (1) ATE136099T1 (fr)
DE (2) DE9109976U1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004002432U1 (de) 2004-02-17 2005-07-07 Hawe Hydraulik Gmbh & Co. Kg Magnetdoppelventil
DE102004051575B4 (de) * 2004-10-22 2015-12-17 Bosch Rexroth Aktiengesellschaft Wegesitzventil
EP2535600B1 (fr) 2011-06-16 2013-08-21 HAWE Hydraulik SE Vanne proportionnelle
DE102018117008A1 (de) * 2018-07-13 2020-01-16 Svm Schultz Verwaltungs-Gmbh & Co. Kg Elektromagnetischer Aktuator mit Lagerelement
DE102018116979A1 (de) * 2018-07-13 2020-01-16 Svm Schultz Verwaltungs-Gmbh & Co. Kg Elektromagnetischer Aktuator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476519A (en) * 1944-12-04 1949-07-19 Adel Prec Products Corp Four-way valve
DE1085736B (de) * 1956-07-23 1960-07-21 Roger Charles Dubois Magnetventil fuer Fluessigkeiten aller Druckbereiche
IT947485B (it) * 1972-02-10 1973-05-21 Sirai S R L Soc Italiana Regol Valvola in particolare ad aziona mento elettromagnetico
DE2646940A1 (de) * 1976-10-18 1978-04-20 Bieri Ag Liebefeld Liebefeld H Elektromagnetisch betaetigtes hydraulisches wegeventil

Also Published As

Publication number Publication date
ATE136099T1 (de) 1996-04-15
DE9109976U1 (fr) 1991-10-10
DE59205820D1 (de) 1996-05-02
EP0527393A1 (fr) 1993-02-17

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