EP1259966A1 - Electroaimant pour actionner l'element de reglage d'une soupape - Google Patents

Electroaimant pour actionner l'element de reglage d'une soupape

Info

Publication number
EP1259966A1
EP1259966A1 EP01911395A EP01911395A EP1259966A1 EP 1259966 A1 EP1259966 A1 EP 1259966A1 EP 01911395 A EP01911395 A EP 01911395A EP 01911395 A EP01911395 A EP 01911395A EP 1259966 A1 EP1259966 A1 EP 1259966A1
Authority
EP
European Patent Office
Prior art keywords
armature
electromagnet
valve
connection
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01911395A
Other languages
German (de)
English (en)
Inventor
Volkmar Leutner
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1259966A1 publication Critical patent/EP1259966A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding

Definitions

  • Electromagnet for actuating the actuator of a valve
  • the invention relates to an electromagnet for actuating the actuator of a valve according to the preamble of claim 1, as is known from DE 197 16 540 AI.
  • the armature arranged in a pressure tube has a through hole running in the direction of movement of the armature. With this through hole, the two pressure spaces arranged on the opposite end faces of the armature are connected to one another.
  • the connection has the effect that, when the armature moves, the pressure medium voi can flow selectively into the other pressure chamber, so that the actuating speed and actuating time of the valve can be influenced via the size or diameter of the through hole. In particular, switching shocks can thereby be avoided.
  • the disadvantage here is that the throttling effect of the connection is the same over the entire stroke of the electromagnet, i.e. also outside the starting position of the armature or the valve member, and thus, in particular, the switching time of the electromagnet is extended if there is a high level in the starting position Throttling effect and therefore a small diameter of the through hole is required.
  • the electromagnet according to the invention for actuating the actuator of a valve with the characterizing features of claim 1 has the advantage that the actuating speed is variable over the actuating stroke. This is achieved by controlling the connection depending on the armature movement. This can cause the connection to be throttled around the starting or middle position of the armature and to be opened only after leaving this starting or middle position.
  • FIG. 1 shows a longitudinal section through a double stroke magnet with attached directional valve in a simplified representation
  • FIG. 2 shows a detail from FIG. 1 in the area of the armature.
  • FIG. 1 shows a longitudinal section through a double stroke magnet 10 in a simplified representation, which is attached to a conventional 4/3 directional control valve 11.
  • the double stroke magnet 10 is designed here as a plunger armature electromagnet, the housing 12 of which has a pressure tube 13 which is screwed into the valve housing 14 of the directional control valve 11 at the end.
  • the pressure pipe 13 is formed in one piece in a manner known per se and consists of a cylindrical inner yoke part 16 carrying a fastening thread 15, to which a first intermediate ring 17, a middle pipe section 18, a second intermediate ring 19 and an outer pipe section 20 are connected in succession. While the two intermediate rings 17, 19 consist of non-magnetic material, the remaining parts of the pressure tube 13 are made of magnetically conductive material. In the area of the outer tube section 20, the pressure tube 13 is closed by a cylindrical outer yoke 21, as a result of which an interior 22 is formed in the pressure tube 13, which receives an armature 23.
  • the armature 23 is fixed via a cross pin 24 on an axially extending plunger 25 which is movably mounted in the inner yoke part 16 and in the outer yoke part 21.
  • a first coil 26 and a second coil 27 of the electromagnet are arranged one behind the other on the outer circumference of the pressure tube 13, the coils 26, 27, which are spatially close together, being separated from one another by an annular flux guide disk 28.
  • Both coils 26, 27 and both end plates 29, 31 and the flux guide disk 28 are surrounded by a cylindrical tube part 32, which also forms part of the housing 12 and consists of magnetically conductive material in order to close the magnetic circuits for the two coils 26 and 27 ,
  • the outer yoke part 21 is fastened in a manner not shown in the pressure tube 13 and carries an annular nut 33 which engages over the free end of the pressure tube 13 and holds the two coils 26, 27 of the electromagnet against the valve housing 14.
  • a recess is formed on the inside diameter thereof, in which a sensor element 34 lies.
  • the sensor element 34 is in direct contact with the outside diameter of the pressure tube 13, in particular the middle tube section 18, and is therefore in a position which is associated with the magnetic circuits of both coils 26 and 27.
  • the sensor element 34, with which the magnetic flux is measured at a point representative of both magnetic circuits, can preferably be designed as a Hall generator.
  • the directional control valve 11 which is confirmed by the double-stroke magnet 10, is a valve known per se for four ways and three positions, the control slide 35 serving as an actuator by a mechanical return device 36 is centered in the center position shown with two springs 37, 38 acting in opposition to one another.
  • the plunger 25 carrying the armature 23 penetrates the inner yoke part 16 and its end 39 abuts the control slide 35 at the end.
  • a connector 41 is attached to the housing 12 of the double-stroke magnet 10 on the outer circumference of the tubular part 32, in which the control electronics for the sensor element 34 and the two coils 26, 27 can be accommodated simply, compactly and inexpensively.
  • the armature 23 coupled to the control slide 35 and the central tube section 18 of the pressure tube 13 are specially designed, as can be seen in particular from FIG. 2.
  • a circumferential annular groove 42 is formed on the inner circumference of the pressure tube 13 in the area of the central position of the armature 23, that is to say in the area of the flow guide disk 28.
  • each end face of the armature 23, which divides the interior 22 into two pressure spaces 43, 44 filled with pressure medium, has an axial bore 45, 46, which run parallel to the tappet 25.
  • the two axial bores 45, 46 cover the annular groove 42 in the central position of the armature 23 in such a way that in each case two, of which The outer circumference of the armature 23 outgoing and in the axial bores 4 r , 46 merging radial bores 48, 49 are arranged symmetrically on both sides and outside the annular groove 42.
  • the special design of the pressure tube 13 and the armature 23 ensures that, for example, when the coil 27 is energized, the armature 23 is moved out of its central position shown in the figures in the direction of the one pressure chamber 44.
  • the pressure medium located in the pressure chamber 44 can, as long as the armature 23 is only slightly deflected, only flow over the annular gap 50 between the outer armature circumference and the pressure tube inner wall and the annular groove 42 in the direction of the other pressure chamber 43.
  • Control spool 35 only a very low acceleration or speed from the middle or. Approach position of the armature 23 out. Only when the two radial bores 48 overlap with the annular groove 42 is a continuous connection for the pressure medium located in the pressure chamber 44 via the axial bore 46, the one radial bore 48, the annular groove 42, the other radial bore 48 and the other axial bore 45 into the pressure chamber 43 created. This connection with a relatively low flow resistance for the pressure medium increases the
  • the invention is not limited to use with a double solenoid 10. Rather, it can also be used with a single-acting magnet. In this case, one radial bore proceeding from the respective axial bore is generally sufficient.
  • the sensor element 34 can of course be replaced by another device for detecting the position of the armature 23 or for controlling the two coils 26, 27.

Landscapes

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

Abstract

L'invention concerne un électroaimant permettant d'actionner un distributeur (11). Le tiroir de commande (35) peut être déplacé dans au moins trois positions de commutation par un électro-aimant de levage double (10). L'induit (23) couplé au tiroir de commande (35) est monté dans un tube de pression (13). Afin d'éviter les chocs de commutation et permettre simultanément de parvenir à un temps de manoeuvre réduit, des alésages axiaux (45,46) et des alésages radiaux (48,49) sont pratiqués dans l'induit (23) et une rainure annulaire (42) est formée dans le tube de pression (13), ce qui permet de parvenir à une jonction entre les deux chambres de pression (43,44) remplies de fluide hydraulique, en fonction de la position de l'induit.
EP01911395A 2000-02-18 2001-01-27 Electroaimant pour actionner l'element de reglage d'une soupape Withdrawn EP1259966A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2000106784 DE10006784A1 (de) 2000-02-18 2000-02-18 Elektromagnet zur Betätigung des Stellglieds eines Ventils
DE10006784 2000-02-18
PCT/DE2001/000337 WO2001061714A1 (fr) 2000-02-18 2001-01-27 Electroaimant pour actionner l'element de reglage d'une soupape

Publications (1)

Publication Number Publication Date
EP1259966A1 true EP1259966A1 (fr) 2002-11-27

Family

ID=7631030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01911395A Withdrawn EP1259966A1 (fr) 2000-02-18 2001-01-27 Electroaimant pour actionner l'element de reglage d'une soupape

Country Status (3)

Country Link
EP (1) EP1259966A1 (fr)
DE (1) DE10006784A1 (fr)
WO (1) WO2001061714A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10114472A1 (de) * 2001-03-24 2002-09-26 Bosch Gmbh Robert Elektromagnet zum Antrieb eines hydraulischen Ventils
DE10248181A1 (de) * 2002-10-16 2004-04-29 Zf Friedrichshafen Ag Druckregelventil
DE102014220063A1 (de) * 2014-10-02 2016-04-07 Continental Teves Ag & Co. Ohg Elektromagnetventil, insbesondere für schlupfgeregelte Kraftfahrzeugbremsanlagen
CN107527706B (zh) * 2017-08-10 2019-07-05 北京特种机械研究所 一种大行程、大吸力、自锁力可调、双向比例电磁铁

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4987923A (en) * 1989-06-22 1991-01-29 Allied-Signal Inc. Solenoid valve
IT1260476B (it) * 1992-05-28 1996-04-09 Dispositivo azionatore a comando elettromagnetico in particolare per valvole ed applicazioni elettroidrauliche
DE9402206U1 (de) * 1994-02-10 1994-05-05 Hydraulik-Ring Antriebs- und Steuerungstechnik GmbH, 72622 Nürtingen Elektroproportionalmagnet-Ventileinheit
JPH08107016A (ja) * 1994-10-03 1996-04-23 Nok Corp ソレノイド

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0161714A1 *

Also Published As

Publication number Publication date
WO2001061714A1 (fr) 2001-08-23
DE10006784A1 (de) 2001-08-23

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