WO2010022869A1 - Valve - Google Patents

Valve Download PDF

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Publication number
WO2010022869A1
WO2010022869A1 PCT/EP2009/005936 EP2009005936W WO2010022869A1 WO 2010022869 A1 WO2010022869 A1 WO 2010022869A1 EP 2009005936 W EP2009005936 W EP 2009005936W WO 2010022869 A1 WO2010022869 A1 WO 2010022869A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
tank
bore
pressure medium
valve spool
Prior art date
Application number
PCT/EP2009/005936
Other languages
German (de)
French (fr)
Inventor
Ronald Höll
Thomas Schlottner
Hans-Georg Schubert
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 WO2010022869A1 publication Critical patent/WO2010022869A1/en

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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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves

Definitions

  • the invention relates to a valve according to the preamble of patent claim 1.
  • valves with a guided in a valve bore slide and at least annular tank pressure chambers, which are spaced along the valve bore, a complementary connecting line or a tank clip is provided in the valve housing according to the prior art between the tank pressure chambers or between associated tank channels.
  • FIG. 1 a valve housing 1 of such a valve is shown.
  • a valve spool (not shown in FIG. 1) in a valve bore 2 along its longitudinal axis 3 from a central position, a pump port P is connected to one of the ports A or B, while at the same time the respective other port A or B communicates with the adjacent tank port T A or TB is connected.
  • This is done by the connection or separation of associated substantially annularly arranged around the valve bore 2 pressure chambers 4, 5, 6, 7, 8.
  • the pressure chambers 4, 5, 6, 7, 8 of the valve shown are each via a channel 9, 10, 11, 12, 13 connected to the associated valve ports T A , A, P, B, T 8 .
  • a tank clip 14 is arranged according to the prior art as a connecting line between the two tank channels 9, 10 in the valve housing 1.
  • the tank clip 14 extends transversely to the tank channels 9, 10 (and to the other Channels 11, 12, 13) of the valve, whereby the manufacturing cost increases during the casting of the valve housing 1.
  • the invention has for its object to provide a valve whose housing can be manufactured with reduced effort.
  • the valve according to the invention has a valve slide for controlling the pressure medium connection between a plurality of connection channels and at least two spaced apart in the longitudinal direction of the valve spool tank pressure chambers, according to the invention a pressure medium flow path for connecting the tank pressure chambers within the valve spool.
  • the pressure fluid flow path is formed by a concentric or eccentric axial bore for the valve slide and at least one radial bore arranged in a circumferential wall of the valve slide, which opens into the axial bore in each case.
  • blind hole or a valve spool passing through hole is, in both variants, the frontal holes are closed by screw plugs or plugs.
  • Figure 1 is a perspective view of a housing of a valve according to the prior art with tank clip, wherein the housing is shown transparent.
  • Figure 2 is a perspective view of a valve spool according to the invention in partial section.
  • FIG. 2 shows a perspective view of a control piston or valve spool 15 according to the invention in a partially sectioned illustration.
  • the valve spool 15 is substantially rotationally symmetrical about its longitudinal axis 16 and serves to control the pressure medium connection between the terminals shown in Figure 1 T A , A, P, B, T B of the valve according to the invention.
  • the valve spool 15 is inserted into the valve bore 2 of the valve housing 1 and there axially displaced along the longitudinal axis 16 of the valve spool 15 and along the longitudinal axis 3 of the valve bore 2.
  • control edges 17a, 17b of the valve slide 15 interact with the pressure chambers 4, 5, 6, 7, 8 of the valve bore 2 (FIG. 1) in such a way that different pressure medium connections between the connections T A , A, P, B, TB are opened or closed.
  • the valve slide 15 is designed as a hollow piston. It has a through hole 18 which extends rotationally symmetrically along the longitudinal axis 16 of the valve slide 15.
  • the two end-side end sections of the through-bore 18 are each pressure-tightly sealed with one closure screw 20, 22, with the two closure screws 20, 22 partially immersed in the through-hole 18.
  • the axially out of the valve spool 15 protruding screw plugs 20, 22 also form mechanical stops for the sliding movement of the valve spool 15 in the valve bore 2 on not fixed to the housing stops. In two places on the longitudinal axis 16 of the valve spool 15 are respectively
  • Radial bore stars 24, 26 each provided with three distributed on the circumference of the valve spool 15 radial bores, of which in Figure 1 two holes 24a, 24b, 26a, 26b are shown.
  • the two points on the longitudinal axis 16 of the valve spool 15 correspond to the points which are determined by the terminals T A , T B associated tank pressure chambers 4, 5 on the longitudinal axis 3 of the valve bore 2.
  • the tank clip 14 provided according to the prior art can be dispensed with. This tank clip
  • valve 14 runs in a valve according to the prior art, not the pressure fluid flow path 24, 18, 26 according to the invention by the valve spool
  • the bore in the interior of the valve spool can also be formed by a blind hole, whereby one of the two end-side closure parts is eliminated.
  • the number, arrangement and size of the radial bores per hole star can deviate from the embodiment shown in Figure 2, provided that a pressure medium communication with the associated tank pressure chambers is maintained.
  • the hollow piston according to the invention with radial bores can be used in principle for all valve types in which a pressure fluid connection or pressure equalization between two mutually in the longitudinal direction of the valve spool or in the longitudinal direction of the valve bore spaced pressure channels or pressure chambers is provided.
  • the blind hole or through hole can also be mounted eccentrically to the longitudinal axis of the valve spool.
  • a valve with a valve spool for controlling the pressure medium connection between a plurality of connection channels, of which at least two spaced apart in the longitudinal direction of the valve spool tank channels, wherein a pressure medium flow path for connecting the tank channels within the valve spool extends.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Housings (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The invention relates to a valve comprising a valve slide (15) for controlling the pressure medium connection between several connection channels (9-13), wherein at least two tank pressure chambers (4,5) spaced apart from each other in the longitudinal direction of the valve slide (15) are present, and wherein a pressure medium flow path (18) for connecting the tank pressure chambers (4,5) runs within the valve slide (15). An equalization connection (tank brace) arranged between the tank channels in the housing according to the prior art can be omitted due to said pressure medium flow path, whereby the manufacture of the valve housing is simplified.

Description

Ventil Valve
Beschreibungdescription
Die Erfindung betrifft ein Ventil gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a valve according to the preamble of patent claim 1.
Bei derartigen Ventilen mit einem in einer Ventilbohrung geführten Schieber und mit mindestens ringförmigen Tankdruckräumen, die entlang der Ventilbohrung beabstandet sind, ist nach dem Stand der Technik zwischen den Tankdruckräumen bzw. zwischen zugeordneten Tankkanälen eine ergänzende Verbindungsleitung bzw. eine Tankspange im Ventilgehäuse vorgesehen.In such valves with a guided in a valve bore slide and at least annular tank pressure chambers, which are spaced along the valve bore, a complementary connecting line or a tank clip is provided in the valve housing according to the prior art between the tank pressure chambers or between associated tank channels.
In Figur 1 , auf die bereits jetzt Bezug genommen wird, ist ein Ventilgehäuse 1 eines derartigen Ventils dargestellt. Durch Verschieben eines (in Figur 1 nicht gezeigten) Ventilschiebers in einer Ventilbohrung 2 entlang deren Längsachse 3 aus einer Mittelposition wird ein Pumpenanschluss P mit einem der Anschlüsse A oder B verbunden, während gleichzeitig der jeweils andere Anschluss A oder B mit dem benachbarten Tankanschluss TA oder TB verbunden wird. Dies geschieht durch die Verbindung bzw. Trennung von zugeordneten im Wesentlichen ringförmig um die Ventilbohrung 2 angeordneten Druckräumen 4, 5, 6, 7, 8. Die Druckräume 4, 5, 6, 7, 8 des gezeigten Ventils sind jeweils über einen Kanal 9, 10, 11 , 12, 13 mit den zugeordneten Ventilanschlüssen TA, A, P, B, T8 verbunden.In Figure 1, to which reference is already made, a valve housing 1 of such a valve is shown. By displacing a valve spool (not shown in FIG. 1) in a valve bore 2 along its longitudinal axis 3 from a central position, a pump port P is connected to one of the ports A or B, while at the same time the respective other port A or B communicates with the adjacent tank port T A or TB is connected. This is done by the connection or separation of associated substantially annularly arranged around the valve bore 2 pressure chambers 4, 5, 6, 7, 8. The pressure chambers 4, 5, 6, 7, 8 of the valve shown are each via a channel 9, 10, 11, 12, 13 connected to the associated valve ports T A , A, P, B, T 8 .
Dabei ist eine Tankspange 14 nach dem Stand der Technik als Verbindungsleitung zwischen den beiden Tankkanälen 9, 10 im Ventilgehäuse 1 angeordnet. Die Tankspange 14 verläuft quer zur den Tankkanälen 9, 10 (und zu den anderen Kanälen 11 , 12, 13) des Ventils, wodurch sich der Fertigungsaufwand beim Guss des Ventilgehäuses 1 erhöht.In this case, a tank clip 14 is arranged according to the prior art as a connecting line between the two tank channels 9, 10 in the valve housing 1. The tank clip 14 extends transversely to the tank channels 9, 10 (and to the other Channels 11, 12, 13) of the valve, whereby the manufacturing cost increases during the casting of the valve housing 1.
Dem gegenüber liegt der Erfindung die Aufgabe zugrunde, ein Ventil zu schaffen, dessen Gehäuse mit verringertem Aufwand hergestellt werden kann.In contrast, the invention has for its object to provide a valve whose housing can be manufactured with reduced effort.
Diese Aufgabe wird gelöst durch ein Ventil nach Patentanspruch 1.This object is achieved by a valve according to claim 1.
Das erfindungsgemäße Ventil hat einen Ventilschieber zur Steuerung der Druckmittelverbindung zwischen mehreren Anschlusskanälen und zumindest zwei zueinander in Längsrichtung des Ventilschiebers beabstandeten Tankdruckräumen, wobei erfindungsgemäß ein Druckmittelströmungspfad zur Verbindung der Tankdruckräume innerhalb des Ventilschiebers verläuft. Durch diesen Druckmittelströmungspfad kann die nach dem Stand der Technik zwischen den Tankdruckräumen bzw. zwischen zugeordneten Tankkanälen im Gehäuse angeordnete Ausgleichsverbindung bzw. Tankspange entfallen, wodurch die Herstellung des Ventilgehäuses vereinfacht wird.The valve according to the invention has a valve slide for controlling the pressure medium connection between a plurality of connection channels and at least two spaced apart in the longitudinal direction of the valve spool tank pressure chambers, according to the invention a pressure medium flow path for connecting the tank pressure chambers within the valve spool. By this pressure fluid flow path can be omitted according to the prior art between the tank pressure chambers or between associated tank channels in the housing compensating connection or tank clip, whereby the production of the valve housing is simplified.
Bei besonders bevorzugten Weiterbildungen des erfindungsgemäßen Ventils ist der Druckmittelströmungspfad von einer zum Ventilschieber konzentrischen oder ex- zentrischen Axialbohrung und pro Tankdreuckraum von mindestens einer in einer > Umfangswandung des Ventilschiebers angeordneten Radialbohrung gebildet, die jeweils in der Axialbohrung mündet.In particularly preferred developments of the valve according to the invention, the pressure fluid flow path is formed by a concentric or eccentric axial bore for the valve slide and at least one radial bore arranged in a circumferential wall of the valve slide, which opens into the axial bore in each case.
Dabei ist es von Vorteil, wenn die Axialbohrung des Ventilschiebers entweder eine in einem stirnseitigen Endabschnitt des Ventilschiebers mündendeIt is advantageous if the axial bore of the valve spool either one opening in an end-side end portion of the valve spool
Sacklochbohrung oder eine den Ventilschieber durchsetzende Durchgangsbohrung ist, wobei bei beiden Varianten die stirnseitigen Löcher durch Verschlussschrauben oder Pfropfen geschlossen sind.Blind hole or a valve spool passing through hole is, in both variants, the frontal holes are closed by screw plugs or plugs.
Im Folgenden wird anhand der Figuren das bevorzugte Ausführungsbeispiel der Erfindung detailliert beschrieben. Es zeigen: Figur 1 eine perspektivische Ansicht eines Gehäuses eines Ventils nach dem Stand der Technik mit Tankspange, wobei das Gehäuse durchsichtig dargestellt ist; undIn the following, the preferred embodiment of the invention will be described in detail with reference to the figures. Show it: Figure 1 is a perspective view of a housing of a valve according to the prior art with tank clip, wherein the housing is shown transparent. and
Figur 2 eine perspektivische Ansicht eines erfindungsgemäßen Ventilschiebers im Teilschnitt.Figure 2 is a perspective view of a valve spool according to the invention in partial section.
Figur 2 zeigt eine perspektivische Ansicht eines erfindungsgemäßen Steuerkolbens bzw. Ventilschiebers 15 in einer teilweise geschnittenen Darstellung. Der Ventilschieber 15 ist im Wesentlichen rotationssymmetrisch um seine Längsachse 16 und dient zur Steuerung der Druckmittelverbindung zwischen den in Figur 1 gezeigten Anschlüssen TA, A, P, B, TB des erfindungsgemäßen Ventils. Dazu wird der Ventilschieber 15 in die Ventilbohrung 2 des Ventilgehäuses 1 eingesetzt und dort entlang der Längsachse 16 des Ventilschiebers 15 bzw. entlang der Längsachse 3 der Ventilbohrung 2 axial verschoben. Dabei wirken in der aus dem Stand der Technik bekannten Weise Steuerkanten 17a, 17b des Ventilschiebers 15 (Figur 2) mit den Druckräumen 4, 5, 6, 7, 8 der Ventilbohrung 2 (Figur 1) derart zusammen, dass verschiedene Druckmittelverbindungen zwischen den Anschlüssen TA, A, P, B, TB auf- bzw. zugesteuert werden.Figure 2 shows a perspective view of a control piston or valve spool 15 according to the invention in a partially sectioned illustration. The valve spool 15 is substantially rotationally symmetrical about its longitudinal axis 16 and serves to control the pressure medium connection between the terminals shown in Figure 1 T A , A, P, B, T B of the valve according to the invention. For this purpose, the valve spool 15 is inserted into the valve bore 2 of the valve housing 1 and there axially displaced along the longitudinal axis 16 of the valve spool 15 and along the longitudinal axis 3 of the valve bore 2. In the manner known from the prior art, control edges 17a, 17b of the valve slide 15 (FIG. 2) interact with the pressure chambers 4, 5, 6, 7, 8 of the valve bore 2 (FIG. 1) in such a way that different pressure medium connections between the connections T A , A, P, B, TB are opened or closed.
Erfindungsgemäß ist der Ventilschieber 15 als Hohlkolben ausgeführt. Er weist eine Durchgangsbohrung 18 auf, die sich rotationssymmetrisch entlang der Längsachse 16 des Ventilschiebers 15 erstreckt. Die beiden stirnseitigen Endabschnitte der Durchgangsbohrung 18 sind mit jeweils einer Verschlussschraube 20, 22 druckdicht verschlossen, wobei die beiden Verschlussschrauben 20, 22 abschnittsweise in die Durchgangsbohrung 18 eintauchen. Die axial aus dem Ventilschieber 15 vorstehenden Verschlussschrauben 20, 22 bilden außerdem mechanische Anschläge für die Verschiebebewegung des Ventilschiebers 15 in der Ventilbohrung 2 an nicht gezeigten gehäusefesten Anschlägen. An zwei Stellen an der Längsachse 16 des Ventilschiebers 15 sind jeweilsAccording to the invention, the valve slide 15 is designed as a hollow piston. It has a through hole 18 which extends rotationally symmetrically along the longitudinal axis 16 of the valve slide 15. The two end-side end sections of the through-bore 18 are each pressure-tightly sealed with one closure screw 20, 22, with the two closure screws 20, 22 partially immersed in the through-hole 18. The axially out of the valve spool 15 protruding screw plugs 20, 22 also form mechanical stops for the sliding movement of the valve spool 15 in the valve bore 2 on not fixed to the housing stops. In two places on the longitudinal axis 16 of the valve spool 15 are respectively
Radialbohrungssterne 24, 26 mit jeweils drei am Umfang des Ventilschiebers 15 verteilten Radialbohrungen vorgesehen, von denen in Figur 1 jeweils zwei Bohrungen 24a, 24b, 26a, 26b dargestellt sind. Die beiden Stellen an der Längsachse 16 des Ventilschiebers 15 entsprechen den Stellen, die durch den Anschlüssen TA, TB zugeordnete Tank-Druckräume 4, 5 auf der Längsachse 3 der Ventilbohrung 2 bestimmt sind. Wenn also der Ventilschieber 15 in die Bohrung 2 des Ventilgehäuses 1 eingesetzt ist und dort in einer Mittelstellung positioniert ist, münden die Radialbohrungen 24a, 24b des Bohrungssterns 24 im Tank-Druckraum 4, während die Radialbohrungen 26a, 26b des Bohrungssterns 26 im Tank- Druckraum 5 münden.Radial bore stars 24, 26 each provided with three distributed on the circumference of the valve spool 15 radial bores, of which in Figure 1 two holes 24a, 24b, 26a, 26b are shown. The two points on the longitudinal axis 16 of the valve spool 15 correspond to the points which are determined by the terminals T A , T B associated tank pressure chambers 4, 5 on the longitudinal axis 3 of the valve bore 2. Thus, when the valve spool 15 is inserted into the bore 2 of the valve housing 1 and positioned there in a middle position, open the radial bores 24a, 24b of the bore star 24 in the tank pressure chamber 4, while the radial bores 26a, 26b of the bore star 26 in the tank pressure chamber 5 open.
Somit besteht erfindungsgemäß ein Druckmittelströmungspfad vom Tank-An- schluss TA des Ventils über einen zugeordneten Tankkanal 9 und den Tank- Druckraum 4 durch den Radialbohrungsstern 24 entlang der Durchgangsbohrung 18 und weiter durch den Radialbohrungsstern 26 über den Tank-Druckraum 5 und einen Tankkanal 10 zum Tank-Anschluss TB. Durch diesen erfindungsgemäßen Druckmittelströmungspfad ist eine Druck-Ausgleichsverbindung zwischen den beiden Tank-Anschlüssen TA , TB des erfindungsgemäßen Ventils gegeben, die auch bei einem Verschieben des Ventilschiebers 15 entlang der Längsachse 3 der Ventilbohrung 2 in außermittige Steuerpositionen bestehen bleibt.Thus, according to the invention, there is a pressure medium flow path from the tank connection TA of the valve via an associated tank channel 9 and the tank pressure chamber 4 through the radial bore star 24 along the through bore 18 and further through the radial bore star 26 via the tank pressure chamber 5 and a tank channel 10 for Tank connection TB. By this pressure fluid flow path according to the invention, a pressure-equalizing connection between the two tank connections T A , TB of the valve according to the invention is given, which remains even with a displacement of the valve spool 15 along the longitudinal axis 3 of the valve bore 2 in off-center control positions.
Wegen des erfindungsgemäßen Druckmittelströmungspfades kann die nach dem Stand der Technik vorgesehene Tankspange 14 entfallen. Diese TankspangeBecause of the pressure fluid flow path according to the invention, the tank clip 14 provided according to the prior art can be dispensed with. This tank clip
14 verläuft bei einem Ventil nach dem Stand der Technik, das nicht den erfindungsgemäßen Druckmittelströmungspfad 24, 18, 26 durch den Ventilschieber14 runs in a valve according to the prior art, not the pressure fluid flow path 24, 18, 26 according to the invention by the valve spool
15 aufweist, als Verbindungsleitung innerhalb des Ventilgehäuses 1 und verbindet den Tankkanal 9 mit dem Tankkanal 10.15, as a connecting line within the valve housing 1 and connects the tank channel 9 with the tank channel 10th
Durch den Entfall der Tankspange 14 ist der Aufwand beim Guss des Ventilge- häuses 1 verringert, da ein Sandkern vereinfacht ist, die Wahrscheinlichkeit von Gussfehlern verringert ist und der Reinigungsaufwand des gegossenen Ventilgehäuses 1 reduziert ist.Due to the elimination of the tank clip 14, the expense of casting the valve housing 1 is reduced, since a sand core is simplified, the probability of Casting errors is reduced and the cleaning effort of the cast valve housing 1 is reduced.
Die Bohrung im Inneren des Ventilschiebers kann abweichend von der in Figur 2 gezeigten Durchgangsbohrung auch von einer Sacklochbohrung gebildet sein, wodurch eines der beiden stirnseitigen Verschlussteile entfällt.Deviating from the through hole shown in Figure 2, the bore in the interior of the valve spool can also be formed by a blind hole, whereby one of the two end-side closure parts is eliminated.
Die Anzahl, Anordnung und Größe der Radialbohrungen pro Bohrungsstern kann von dem in Figur 2 gezeigten Ausführungsbeispiel abweichen, sofern eine Druckmittelkommunikation mit den zugeordneten Tank-Druckräumen erhalten bleibt.The number, arrangement and size of the radial bores per hole star can deviate from the embodiment shown in Figure 2, provided that a pressure medium communication with the associated tank pressure chambers is maintained.
Abweichend von dem in Figur 1 und Figur 2 gezeigten Ventiltyp kann der erfindungsgemäße Hohlkolben mit Radialbohrungen prinzipiell bei allen Ventiltypen eingesetzt werden, bei denen eine Druckmittelverbindung bzw. Druck-Ausgleichsverbindung zwischen zwei zueinander in Längsrichtung des Ventilschiebers bzw. in Längsrichtung der Ventilbohrung beabstandeten Druckkanälen oder Druckräumen vorgesehen ist.Notwithstanding the valve type shown in Figure 1 and Figure 2, the hollow piston according to the invention with radial bores can be used in principle for all valve types in which a pressure fluid connection or pressure equalization between two mutually in the longitudinal direction of the valve spool or in the longitudinal direction of the valve bore spaced pressure channels or pressure chambers is provided.
Die Sackloch- oder Durchgangsbohrung kann auch exzentrisch zur Längsachse des Ventilschiebers angebracht sein.The blind hole or through hole can also be mounted eccentrically to the longitudinal axis of the valve spool.
Offenbart ist ein Ventil mit einem Ventilschieber zur Steuerung der Druckmittelverbindung zwischen mehreren Anschlusskanälen, von denen zumindest zwei zueinander in Längsrichtung des Ventilschiebers beabstandete Tankkanäle sind, wobei ein Druckmittelströmungspfad zur Verbindung der Tankkanäle innerhalb des Ventil- Schiebers verläuft. Durch diesen Druckmittelströmungspfad kann die nach dem Stand der Technik zwischen den Tankkanälen im Gehäuse angeordnete Ausgleichsverbindung (Tankspange) entfallen, womit die Herstellung des Ventilgehäuses vereinfacht wird. BezuαszeichenlisteDisclosed is a valve with a valve spool for controlling the pressure medium connection between a plurality of connection channels, of which at least two spaced apart in the longitudinal direction of the valve spool tank channels, wherein a pressure medium flow path for connecting the tank channels within the valve spool extends. By this pressure fluid flow path, the prior art arranged between the tank channels in the housing compensating connection (tank clip) can be omitted, whereby the production of the valve housing is simplified. LIST OF REFERENCE NUMERALS
1 Ventilgehäuse1 valve housing
2 Ventilbohrung2 valve hole
3 Längsachse3 longitudinal axis
4, 5 Tank-Druckraum4, 5 tank pressure chamber
6, 7,8 Druckraum6, 7,8 pressure chamber
9, 10 Tankkanal9, 10 tank channel
11, 12, 13 Kanal11, 12, 13 channel
14 Tankspange14 tank clip
15 Ventilschieber15 valve spool
16 Längsachse16 longitudinal axis
17a, 17b Steuerkante17a, 17b control edge
18 Durchgangsbohrung18 through hole
20, 22 Verschlussschraube20, 22 screw plug
24,26 Radialbohrungsstem24.26 Radial Drilling Stem
24a, 24b, 26a, 26b Radialbohrung 24a, 24b, 26a, 26b Radial bore

Claims

Ansprüche claims
1. Ventil mit einem Ventilschieber (15) zur Steuerung der Druckmittelverbindung zwischen mehreren Anschlusskanälen (9, 10, 11 , 12, 13) und mit zumindest zwei zueinander in Längsrichtung des Ventilschiebers (15) beabstandeten, insbesondere ringförmigen Tankdruckräumen (4, 5), dadurch gekennzeichnet, dass ein1. Valve with a valve slide (15) for controlling the pressure medium connection between a plurality of connection channels (9, 10, 11, 12, 13) and with at least two mutually in the longitudinal direction of the valve slide (15) spaced, in particular annular tank pressure chambers (4, 5), characterized in that a
Druckmittelströmungspfad zur Verbindung der Tankdruckräume (4, 5) innerhalb des Ventilschiebers (15) verläuft.Pressure medium flow path for connecting the tank pressure chambers (4, 5) within the valve spool (15) extends.
2. Ventil nach Anspruch 1 , wobei der Druckmittelströmungspfad von einer zum Ventilschieber (15) exzentrischen oder konzentrischen Axialbohrung (18) und pro2. Valve according to claim 1, wherein the pressure medium flow path from one to the valve spool (15) eccentric or concentric axial bore (18) and per
Tankdruckraum (4, 5) von mindestens einer Radialbohrung (24a, 24b, 26a, 26b) in einer Umfangswandung des Ventilschiebers (15) gebildet ist.Tank pressure chamber (4, 5) of at least one radial bore (24a, 24b, 26a, 26b) in a peripheral wall of the valve slide (15) is formed.
3. Ventil nach Anspruch 2, wobei die Axialbohrung (18) des Ventilschiebers (15) eine in einem stirnseitigen Endabschnitt des Ventilschiebers (15) mündende3. Valve according to claim 2, wherein the axial bore (18) of the valve slide (15) one in an end-side end portion of the valve spool (15) opening
Sacklochbohrung oder eine den Ventilschieber (15) durchsetzende Durchgangsbohrung (18) ist, die jeweils stirnseitig durch einen oder mehrere Verschlussabschnitte geschlossen ist.Blind hole or a valve spool (15) passing through hole (18) which is closed at the front by one or more closure portions.
4. Ventil nach Anspruch 3, wobei der oder die Verschlussabschnitte von Verschlussschrauben (20, 22) oder Pfropfen gebildet sind. 4. Valve according to claim 3, wherein the one or more closure portions of closure screws (20, 22) or plugs are formed.
PCT/EP2009/005936 2008-08-28 2009-08-17 Valve WO2010022869A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810044789 DE102008044789A1 (en) 2008-08-28 2008-08-28 Valve
DE102008044789.7 2008-08-28

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WO2010022869A1 true WO2010022869A1 (en) 2010-03-04

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PCT/EP2009/005936 WO2010022869A1 (en) 2008-08-28 2009-08-17 Valve

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* Cited by examiner, † Cited by third party
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DE102016111128A1 (en) * 2016-06-17 2017-12-21 Schmidt Automotive Gmbh Rotationally symmetrical hollow body and method for its production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1245662B (en) * 1962-11-09 1967-07-27 Ludwig Rexroth Piston valve
US3789880A (en) * 1972-01-04 1974-02-05 Chem Valley Machines Inc Porous metal flow control spool
EP0573191A1 (en) * 1992-06-05 1993-12-08 Trinova Limited Two-stage hydraulic valves
DE4319162A1 (en) * 1993-06-09 1994-12-15 Rexroth Mannesmann Gmbh Hydraulic valve, in particular for controlling a hydraulic actuator in a system for the rolling stabilisation of a motor vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1245662B (en) * 1962-11-09 1967-07-27 Ludwig Rexroth Piston valve
US3789880A (en) * 1972-01-04 1974-02-05 Chem Valley Machines Inc Porous metal flow control spool
EP0573191A1 (en) * 1992-06-05 1993-12-08 Trinova Limited Two-stage hydraulic valves
DE4319162A1 (en) * 1993-06-09 1994-12-15 Rexroth Mannesmann Gmbh Hydraulic valve, in particular for controlling a hydraulic actuator in a system for the rolling stabilisation of a motor vehicle

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