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WO2006015790A1 - Electrovanne - Google Patents

Electrovanne Download PDF

Info

Publication number
WO2006015790A1
WO2006015790A1 PCT/EP2005/008429 EP2005008429W WO2006015790A1 WO 2006015790 A1 WO2006015790 A1 WO 2006015790A1 EP 2005008429 W EP2005008429 W EP 2005008429W WO 2006015790 A1 WO2006015790 A1 WO 2006015790A1
Authority
WO
WIPO (PCT)
Prior art keywords
solenoid valve
pressure tube
valve according
armature
coil
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.)
Ceased
Application number
PCT/EP2005/008429
Other languages
German (de)
English (en)
Inventor
Jürgen Grün
Brian Kane
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.)
Bosch Rexroth AG
Original Assignee
Bosch Rexroth AG
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 Bosch Rexroth AG filed Critical Bosch Rexroth AG
Publication of WO2006015790A1 publication Critical patent/WO2006015790A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F16K31/0658—Armature and valve member being one single element

Definitions

  • the invention relates to a solenoid valve according to the preamble of patent claim 1.
  • Such solenoid valves are used for controlling or regulating pressure medium flows. They have an armature biased in an armature space, which executes a stroke when energized a coil, so that a pressure medium connection is opened or closed.
  • the armature space is bounded radially by a pressure tube which is surrounded by the coil.
  • Known pressure pipes consist of a magnetizable and a non-magnetizable section. With the aid of the non-magnetizable section, a magnetic separation in the pressure tube is achieved, through which the magnetic flux is directed via the armature.
  • the object of the present invention is to provide a magnetic valve in which no mutual induction occurs in the pressure pipe and which is easy to produce in terms of manufacturing technology.
  • the pressure tube consists of an electrically nonconductive material.
  • the electric non-conductive material By the electric non-conductive material, the formation of a Jacobin ⁇ production is prevented in the pressure tube. This results in a faster field structure and thus an improved dynamic response of the solenoid valve.
  • the pressure tube is produced in an injection molding of a fiber-reinforced plastic.
  • the pressure tube between an armature space cover and a valve body housing is pressed.
  • the pressure or the distance of the Ankerraum ⁇ lid to the valve body housing can be defined by at least one spacer outside the pressure tube over which the magnetic circuit is closed.
  • a plurality of spacers in the form of a metal tube are used, which are distributed around the pressure tube at regular intervals, wherein suitable fastening means such as screws are guided in the longitudinal direction through the metal tubes, such as screws for clamping the pressure tube.
  • the spacer may also be formed as a metal sleeve enclosing the pressure tube, or by a U-shaped bracket, through whose legs the pressure tube extends.
  • the pressure tube has conical end sections for the purpose of permitting a defined dense pressing.
  • To improve the dense pressing ring seals can be provided, on which the pressure tube is supported.
  • the ring seals are formed integrally on the end sections of the pressure tube. This has the advantage that the number of parts reduced and the assembly of the solenoid valve is much easier. They can as ring seals formed end portions may be formed of a different material than the remaining body portions of the pressure tube.
  • the pressure tube simultaneously serves as a coil carrier.
  • the coil is wound around two opposite radial walls of the pressure tube.
  • the radial walls are formed integrally with the pressure tube, wherein on a radial wall, a foldable tab may be provided for covering the wound coil.
  • a fixed valve body emerges in the basic position in sections in the armature and forms together with this the valve seat.
  • the valve body may be formed of a magnetizable material and terminate at a distance to a, a working gap (24) limiting anchor end face.
  • FIG. 1 shows a longitudinal section through a first embodiment of the solenoid valve according to the invention
  • FIG. 2 shows a longitudinal section through a second embodiment of the solenoid valve according to the invention.
  • FIG. 3 shows an enlarged longitudinal section through a development of a pressure tube according to the invention.
  • Figure 1 shows a first preferred embodiment of the solenoid valve 2 according to the invention with an armature 4, which is biased by a spring 6 against a ' fixed in this Ausure ⁇ insurance form valve body 8 in its Grund ⁇ position. In this basic position, a pressure medium connection between a front-side working port A and a radial working port B is interrupted.
  • the armature 4 is slidably disposed in an armature space 10 which is bounded by an armature space cover 12 and a valve body housing 14 in the axial direction and by a pressure pipe 16 according to the invention in the radial direction.
  • a protruding into the armature space 10 body portion of the armature 4 is set back radially, whereby a shoulder 18 is formed on which engages a free end of the spring 6.
  • the other free end of the spring 6 engages around an axial projection 20 of the AnkerraumdeckeIs 12 and is supported on an armature space cover shoulder 22 from.
  • an axial working gap 24 is formed on the end face between the armature 4 and the projection, which defines a maximum stroke of the armature 4.
  • an axial through-bore 26 is formed, into which the valve body 8 is immersed with an extension 50.
  • the valve body 8 is fixed in an axial bore 28 of the valve body housing 14 and forms the valve seat 32 together with the armature 4.
  • the axial bore 28 communicates with the front-side working port A and is radially expanded in the direction of the valve seat 32, so that a valve seat space 36 is formed.
  • a valve seat space 36 opens a bore star 38, which communicates with the radial working port B.
  • the valve body 8 is tapered ra ⁇ dial in the direction of the armature 4, so that an oblique seat 34 is formed, against which the armature 4 is biased with a body edge 40 in its normal position.
  • the seat 34 merges into a cylindrical body portion 42 of the valve body 8, which dips into the through hole 26 of the armature 4.
  • the outer diameter of technicallyab ⁇ section 42 is selected so that an annular gap 44 between the body portion 42 and aromelie ⁇ ing inner wall portion of the through hole 26 is formed.
  • a transverse bore 46 is provided, which represents a cross-connection for the annular gap 44.
  • this transverse bore 46 opens a Leksboh ⁇ tion 48 of the valve body 8, which is open to the axial bore 28.
  • pressure medium can flow from the working port A via the axial bore 28, the longitudinal bore 48, the transverse bore 46, the annular gap 44, the valve seat space 36 and the bore star 38 to the working port B and vice versa when the armature abhebobe ⁇ from the seat 34.
  • the extension 50 adjoins the body section 42. This is radially expanded relative to the body portion 42 and formed cylindrical.
  • the outer diameter of the extension 50 corresponds essentially to the inner diameter of the through-bore 26, so that guidance of the armature 4 via the extension 50 can take place during the stroke.
  • the length of the extension 50 is selected in accordance with FIG. 1 in the case of a non-magnetizable valve body 8 in such a way that, in the basic position of the armature 4, it terminates flush with the end face.
  • the valve body 8 is made of a magnetizable material (FIG. 2)
  • the extension 50 is shortened such that it ends at a distance from the axial working gap 24. This distance causes the field lines to be directed via the armature 4 and not via the valve body 8.
  • the pressure tube 16 is made of a non-magnetizable material to prevent counterinduction.
  • it is manufactured by means of an injection molding process and consists of a fiber-reinforced plastic. It dives with its end sections 56, 58 in
  • Circumferential grooves 52, 54 of the AnkerraumdeckeIs 12 and the valve body housing 14 a are formed as ring seals (not shown), via which the pressure pipe 16 is sealed to the armature space cover 12 and the valve body housing 14. It is conceivable that the end portions 58, 60 are formed of a different plastic than the other body portions in order to achieve a particularly high density.
  • the inner diameter of the pressure tube 16 is selected such that a radial gap 60 is formed between opposing circumferential surfaces of the pressure tube 16 and the armature 4.
  • the end sections 56, 58 can also be of conical design or additional ring seals can be inserted into the circumferential grooves 52, 54 for sealing purposes.
  • the pressure tube 16 made of another electrically non-conductive material than plastic, such as ceramic
  • the pressure tube 16 is encompassed by a coil 62 on an outer peripheral surface section 82.
  • the outer peripheral surface portion 82 extends between two radial walls 64, 66 which define a winding space for the coil 62 in the axial direction.
  • the pressure tube 16 serves as a coil carrier at the same time.
  • the radial walls 64, 66 are advantageously formed integrally with the pressure tube 16.
  • the coil 62 is surrounded by a plurality of spacers 68, 70 for pressing in the pressure tube 16 between the armature space cover 12 and the valve body housing 14.
  • the spacers 68, 70 are spaced apart from one another in the circumferential direction and engage an armature space cover flange 72 and a valve body housing flange 74. According to FIG. 1, they are designed as tubes, through which screws 76, 78 extend in the longitudinal direction, by means of which the armature space cover 12 and the valve body housing 14 can be braced against one another.
  • the tubes are metallic, i. magnetizable.
  • metal tube-like spacers 68, 70 instead of metal tube-like spacers 68, 70, to use a preferably slotted metal sleeve (not shown) as a spacer.
  • FIG. 2 The embodiment of the solenoid valve 2 according to the invention shown in FIG. 2 essentially corresponds to the above-described embodiment according to FIG. 1. The only differences are the magnetizable material of the valve body 8 and the short version of the extension 50 connected thereto. To repeat To avoid this, reference is made to the above explanations.
  • Figure 3 is an enlarged longitudinal section of a further development of the pressure tube 16 according to the invention, in which a coil 62 between two radial walls 64, 66 covered by a tab 30 and thus protected from dirt and damage.
  • the tab 30 is formed integrally with one of the radial walls 64, wherein it is umklapp ⁇ over a film hinge 80 bar.
  • a solenoid valve with a prestressed armature which is surrounded by a pressure tube with a coil, wherein the pressure tube consists of an electrically non-conductive material.
  • Valve body 0 Anchor space 2 Anchor space cover 4 Valve body housing 6 Pressure tube 8 Shoulder 0 Projection 2 Anchor space cover shoulder 4 Working gap 6 Through hole 8 Axial bore 0 Tab 2 Valve seat 4 Seat 6 Valve seat 8 Bore star 0 Body edge 2 Body section 4 Annular gap 6 Transverse bore 8 Longitudinal bore 0 Extension 2 Circumferential groove 4 Circumferential groove 6 End section 8 End section 0 Radial gap 2 Coil 4 Radial wall 6 Radial wall 68 spacers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une électrovanne comprenant un induit (4) soumis à une précontrainte et entouré d'un tube de pression (16) doté d'une bobine (62). L'invention est caractérisée en ce que le tube de pression est en matériau électriquement non conducteur.
PCT/EP2005/008429 2004-08-05 2005-08-03 Electrovanne Ceased WO2006015790A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410038090 DE102004038090B4 (de) 2004-08-05 2004-08-05 Magnetventil
DE102004038090.2 2004-08-05

Publications (1)

Publication Number Publication Date
WO2006015790A1 true WO2006015790A1 (fr) 2006-02-16

Family

ID=34982563

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/008429 Ceased WO2006015790A1 (fr) 2004-08-05 2005-08-03 Electrovanne

Country Status (2)

Country Link
DE (1) DE102004038090B4 (fr)
WO (1) WO2006015790A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014024232A1 (fr) * 2012-08-10 2014-02-13 Mitsubishi Heavy Industries, Ltd. Soupape-champignon

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2095118A5 (fr) * 1971-04-15 1972-02-04 Rausch & Pausch
DE2736032A1 (de) * 1977-08-10 1979-02-22 Siemens Ag Elektromagnetventil
DE3514442A1 (de) * 1985-04-20 1986-10-23 Mannesmann AG, 4000 Düsseldorf Ventil fuer einen fluessigkeitskreislauf
US6201461B1 (en) * 1998-02-26 2001-03-13 Robert Bosch Gmbh Electromagnetically controlled valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003606A1 (de) * 1990-02-07 1990-12-20 Bosch Gmbh Robert Elektromagnetisch betaetigtes ventil, insbesondere hydraulisches hochdruckventil fuer fahrzeug-bremsanlag en
DE19848919A1 (de) * 1998-10-23 2000-04-27 Elektroteile Gmbh Magnetventil
DE10038139B4 (de) * 2000-08-04 2007-06-06 Stahlwerk Ergste Westig Gmbh Führungselement für eine Magnetanordnung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2095118A5 (fr) * 1971-04-15 1972-02-04 Rausch & Pausch
DE2736032A1 (de) * 1977-08-10 1979-02-22 Siemens Ag Elektromagnetventil
DE3514442A1 (de) * 1985-04-20 1986-10-23 Mannesmann AG, 4000 Düsseldorf Ventil fuer einen fluessigkeitskreislauf
US6201461B1 (en) * 1998-02-26 2001-03-13 Robert Bosch Gmbh Electromagnetically controlled valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014024232A1 (fr) * 2012-08-10 2014-02-13 Mitsubishi Heavy Industries, Ltd. Soupape-champignon

Also Published As

Publication number Publication date
DE102004038090B4 (de) 2013-08-08
DE102004038090A1 (de) 2006-03-16

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