WO2013000783A1 - Valve assembly - Google Patents
Valve assembly Download PDFInfo
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- WO2013000783A1 WO2013000783A1 PCT/EP2012/061813 EP2012061813W WO2013000783A1 WO 2013000783 A1 WO2013000783 A1 WO 2013000783A1 EP 2012061813 W EP2012061813 W EP 2012061813W WO 2013000783 A1 WO2013000783 A1 WO 2013000783A1
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- WO
- WIPO (PCT)
- Prior art keywords
- closing body
- valve
- closing
- valve assembly
- spring
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/341—Systems characterised by their valves
Definitions
- the invention relates to a valve assembly, in particular for damping pressure oscillations in a hydraulic system, according to the preamble of patent claim 1.
- a valve assembly of the specified type is already known from DE 10 2009 006 980 AI.
- This valve assembly is Be ⁇ part of a damper unit to minimize the initiated by a piston pump pressure pulsation.
- the valve assembly consists of a cartridge-shaped valve housing, in which a closing body loaded by means of a closing spring interacts with a valve seat in a manner dependent on differential pressure.
- the valve housing In order to vary the flow, the valve housing to a ers ⁇ te and a second hydraulic diaphragm in different sizes, with the particularity that the first orifice in series arrangement and the second aperture is received in parallel arrangement to the lock body in the valve housing.
- the proposed arrangement has the disadvantage that disturbing noises are caused by the valve assembly, which re ⁇ sult from the vibration behavior of the spring-mass system.
- FIG. 1 shows a valve assembly according to the invention in longitudinal ⁇ section with a swirl body arranged upstream of the closing body in the valve housing,
- FIG. 2 shows a valve assembly according to the invention in the longitudinal ⁇ section with a closing spring acting on the closing spring, which has a progressive spring characteristic to reduce the vibration behavior
- FIG. 3 shows a valve assembly according to the invention with a damping cylinder arranged inside the closing spring
- Figure 4 shows a modification of the subject invention
- FIG. 3 according to which the damping cylinder is provided with a convex lateral surface
- FIG. 5 shows a valve assembly according to the invention with a closing body formed as a cap-shaped hollow cylinder, which is guided in a liquid-tight manner in a closing body receiving bore of the valve housing,
- FIG. 7 shows, as an alternative to FIG. 6, instead of the annular gap diaphragm, a centrally arranged diaphragm passage in the closing body;
- FIG. 8 shows the closing body as a valve disk, which is acted upon by a closing spring, which is supported on a ball pressed into the valve housing.
- FIGS. 1 to 8 Before discussing the differences between the valve assemblies depicted in FIGS. 1 to 8, the common features that can be seen from all FIGS. 1 and 2 shall first be explained with reference to FIG.
- Figure 1 thus shows representative of those depicted in Figu ⁇ ren 2 to 8 valve assemblies in longitudinal section a general view of the basic construction of the valve assembly according to the invention is preferably used for damping pressure vibrations in a brake hydraulic system of a motor vehicle, including a hydraulic diaphragm in the region of the Closing body 3 is arranged, which allows a defined flow through the valve assembly in Ven ⁇ tilsch practitioner.
- the closing body 3 is of a
- Closing spring 1 is acted upon, which holds the closing body 3 according to all illustrations in its basic position on the valve seat 9, so that in the basic position exclusively the cross section of the example in Figure 1 as a notch 11 executed ⁇ th aperture in the valve seat 9 is released.
- Lifting of the closing body 3 from the valve seat 9 thus takes place exclusively depending on the differential pressure, that is, if the pressure on the
- the closing spring 1 is made of a plurality of turns of a spring wire, which with its first turn ⁇ end on the closing body 3 and with its first end of the coil diametrically arranged spring region, the second Windungsende comprises, either directly on the bottom of the valve ⁇ housing 8 or supported on a special spring stop.
- the valve housing 8 is made in two parts, with a designed as Einpreßpatrone massi ⁇ ven upper part, which carries the valve seat 9 and a cup-shaped, thin-walled base, made by deep drawing of thin sheet and frictionally engaged with its pot edge on the upper part the valve housing 8 is attached.
- the rohrför--shaped upper part of the valve housing 8 consists of a thick-walled ⁇ turning or cold-formed part, in which cavity according to FIG 2 to 4 upstream of the valve seat 9, a screen 15 is fi xed ⁇ .
- the flow through the valve housing 8 takes place ⁇ so from top to bottom in the direction of the housing longitudinal axis, including the closing spring 1 supporting bottom of the cup-shaped lower part and the lateral surface of the lower part are provided with ei ⁇ nem passage, which allows the valve flow.
- the invention provides for the purpose of reducing the valve switching noise in all embodiments that in the valve housing 8 vibration damping means 1, 2, 5 are additionally provided, which are formed in the flow path in front of or behind the closing body 3 or directly on the closing body 3.
- FIG. 1 shows a valve assembly which is located in the flow path in front of the valve Closing body 3 as a vibration damping means a
- Swirl generator 2 in the valve housing 8 has, as
- Swirl disk is executed, including several vanes 4 are distributed over the circumference of the swirl disk.
- the valve housing 8 between the swirl generator 2 and the valve seat 9 in the direction of the closing body 3 has a funnel-shaped narrowed flow path, which is provided for enhancing the swirl effect on the fluid if necessary with grooves, grooves or helical or spiral depressions.
- FIG. 3 shows an improved valve assembly is shown, which has a damping cylinder 5 made of plastic as a vibration damping means within the closing spring 1, whose lateral surface for vibration reduction is in frictional contact with the closing spring 1, wherein for limiting the Ventilö Wegshubs and the impact noise of the closing body. 3 can be applied to the end face of the damping cylinder 5.
- a damping cylinder 5 made of plastic as a vibration damping means within the closing spring 1, whose lateral surface for vibration reduction is in frictional contact with the closing spring 1, wherein for limiting the Ventilö Wegshubs and the impact noise of the closing body. 3 can be applied to the end face of the damping cylinder 5.
- the closing body 3 this is designed as a (steel) ball and the valve seat 9 as a conical seat, wherein a constant flow volume flow is established between the closing body 3 and the valve seat 9, the bypass is made in the function of a hydraulic shutter in each case by a notch 11 in the valve seat 9.
- the closing body 3 is designed as a hollow or solid cylinder or as a valve disk with or without a guide pin 6, whose specific features are discussed below.
- FIG. 5 is a cap-shaped hollow cylinder, in Figs. 6, 7 in each case a solid cylinder as
- the Schyogihrung 7 is designed as a blind hole in the figures 5 to 7, which in the receiving area of the closing spring 1 of the Querboh- tion 10 is penetrated.
- the bypass is produced directly in FIG. 5, 7 by a central aperture 12 in the closing body 3, while in FIG. 6 the aperture function is provided by an annular gap 13 between the closing body 3 and the closing body receiving bore 7 is formed, including the closing body 3 has a correspondingly large running clearance in the closing body receiving ⁇ bore 7.
- closing body 3 When using a solid cylinder as a closing body 3 is used in accordance with the figures 6, 7 advantageous to high-precision, standardized ⁇ rolling bearings, which are available inexpensively as cylindrical rollers and needle roller bearings in high surface quality. Similarly, roller bearing balls can cost as closing body 3 in Figures 1 to 4 are used.
- valve disc ⁇ which is provided on request or need to guide the disc-shaped closing body 3 with a centrally disposed guide pin 6, which extends opposite to the flow direction in the valve inlet self-centering
- the valve seat 9 is formed by a bore step at the upper end of the Sch Strukturigenanalysisfactbohrung 7, at the end face of the annular surface of the closing body 3 below the effect of the closing spring 1 is present.
- the guide pin 6 and the disc-shaped closing body 3 are centrally penetrated by a Blen ⁇ den togang 12, so that the closing body 3 allows a throttled flow in the direction of the transverse bore 10 (valve outlet), as long as the closing body 3 is not yet necessary for lifting the valve seat 9 hydraulic Opening pressure is exposed.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
Description
Ventilbaugruppe valve assembly
Die Erfindung betrifft eine Ventilbaugruppe, insbesondere zur Dämpfung von Druckschwingungen in einem Hydrauliksystem, nach dem Oberbegriff des Patentanspruchs 1. The invention relates to a valve assembly, in particular for damping pressure oscillations in a hydraulic system, according to the preamble of patent claim 1.
Eine Ventilbaugruppe der angegebenen Art ist bereits aus DE 10 2009 006 980 AI bekannt. Diese Ventilbaugruppe ist Be¬ standteil einer Dämpfereinheit, um die von einer Kolbenpumpe initiierten Druckpulsation zu minimieren. Die Ventilbaugruppe besteht aus einem patronenförmigen Ventilgehäuse, in dem ein mittels einer Schließfeder belasteter Schließkörper mit einem Ventilsitz differenzdruckabhängig zusammenwirkt. Zur Variation des Durchflusses weist das Ventilgehäuse eine ers¬ te und eine zweite hydraulische Blende in unterschiedlichen Größen auf, mit der Besonderheit, dass die erste Blende in Reihenanordnung und die zweite Blende in Parallelanordnung zum Schließkörper im Ventilgehäuse aufgenommen ist. Die vorgeschlagene Anordnung hat jedoch den Nachteil, dass durch die Ventilbaugruppe störende Geräusche verursacht werden, die aus dem Schwingungsverhalten des Feder-Masse-Systems re¬ sultieren . A valve assembly of the specified type is already known from DE 10 2009 006 980 AI. This valve assembly is Be ¬ part of a damper unit to minimize the initiated by a piston pump pressure pulsation. The valve assembly consists of a cartridge-shaped valve housing, in which a closing body loaded by means of a closing spring interacts with a valve seat in a manner dependent on differential pressure. In order to vary the flow, the valve housing to a ers ¬ te and a second hydraulic diaphragm in different sizes, with the particularity that the first orifice in series arrangement and the second aperture is received in parallel arrangement to the lock body in the valve housing. However, the proposed arrangement has the disadvantage that disturbing noises are caused by the valve assembly, which re ¬ sult from the vibration behavior of the spring-mass system.
Daher ist es die Aufgabe der vorliegenden Erfindung, eine Ventilbaugruppe der eingangs genannten Art weiter zu entwi¬ ckeln, um durch eine möglichst einfache und funktionsverbes- serte Ausführung den vorgenannten Nachteil zu vermeiden. Diese Aufgabe wird erfindungsgemäß für eine Ventilbaugruppe der angegebenen Art mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst. Therefore, it is the object of the present invention to further escape a valve assembly of the type mentioned ¬ ckeln to avoid by simple and funktionsverbes- serte embodiment the above-mentioned disadvantage. This object is achieved according to the invention for a valve assembly the specified type with the characterizing features of claim 1.
Weitere Merkmale und Vorteile der Erfindung gehen im Folgen¬ den aus der Beschreibung mehreren Ausführungsbeispiele hervor . Further features and advantages of the invention will become apparent in the following ¬ from the description of several embodiments.
Es zeigt: It shows:
Figur 1 eine erfindungsgemäße Ventilbaugruppe im Längs¬ schnitt mit einem stromaufwärts zum Schließkörper im Ventilgehäuse angeordneten Drallkörper, 1 shows a valve assembly according to the invention in longitudinal ¬ section with a swirl body arranged upstream of the closing body in the valve housing,
Figur 2 eine erfindungsgemäße Ventilbaugruppe im Längs¬ schnitt mit einer auf den Schließkörper einwirkenden Schließfeder, die zur Reduzierung des Schwingungsverhaltens eine progressive Federkennlinie aufweist, 2 shows a valve assembly according to the invention in the longitudinal ¬ section with a closing spring acting on the closing spring, which has a progressive spring characteristic to reduce the vibration behavior,
Figur 3 eine erfindungsgemäße Ventilbaugruppe mit einem innerhalb der Schließfeder angeordneten Dämpfungszylinder, FIG. 3 shows a valve assembly according to the invention with a damping cylinder arranged inside the closing spring,
Figur 4 eine Abwandlung des Erfindungsgegenstandes nach Figure 4 shows a modification of the subject invention
Figur 3, wonach der Dämpfungszylinder mit einer konvexen Mantelfläche versehen ist, FIG. 3, according to which the damping cylinder is provided with a convex lateral surface,
Figur 5 eine erfindungsgemäße Ventilbaugruppe mit einem als kappenförmigen Hohlzylinder ausgebildeten Schließkörper, der flüssigkeitsdicht in einer Schließkörperaufnahmebohrung des Ventilgehäuses geführt ist, FIG. 5 shows a valve assembly according to the invention with a closing body formed as a cap-shaped hollow cylinder, which is guided in a liquid-tight manner in a closing body receiving bore of the valve housing,
Figur 6 abweichend von Figur 5 den Schließkörper als Vollzylinder ausgeführt, der zur Ausbildung einer Ringspaltblende ein hinreichend groß bemessenes Laufspiel in der Schließkörperaufnahmebohrung aufweist, Figure 6 deviating from Figure 5, the closing body designed as a solid cylinder, which is used to form a Ringpaltblende has a sufficiently large-sized running clearance in the Schließkörperaufnahmebohrung,
Figur 7 alternativ zu Figur 6 anstelle der Ringspaltblende einen zentral angeordneten Blendendurchgang im Schließkörper, FIG. 7 shows, as an alternative to FIG. 6, instead of the annular gap diaphragm, a centrally arranged diaphragm passage in the closing body;
Figur 8 den Schließkörper als Ventilscheibe ausgebildet, der von einer Schließfeder beaufschlagt ist, welche sich auf einer in das Ventilgehäuse einge- pressten Kugel abstützt. FIG. 8 shows the closing body as a valve disk, which is acted upon by a closing spring, which is supported on a ball pressed into the valve housing.
Bevor auf die Unterschiede zwischen den in den Figuren 1 bis 8 abgebildeten Ventilbaugruppen eingegangen wird, sollen zunächst anhand der Figur 1 die aus allen Figuren ersichtli¬ chen gemeinsamen Merkmale herausgestellt werden. Before discussing the differences between the valve assemblies depicted in FIGS. 1 to 8, the common features that can be seen from all FIGS . 1 and 2 shall first be explained with reference to FIG.
Die Figur 1 zeigt somit stellvertretend für die in den Figu¬ ren 2 bis 8 abgebildeten Ventilbaugruppen im Längsschnitt eine Gesamtansicht zur grundlegenden Konstruktion der erfindungsgemäßen Ventilbaugruppe, die bevorzugt zur Dämpfung von Druckschwingungen in einem Bremshydrauliksystem eines Kraftfahrzeugs eingesetzt wird, wozu eine hydraulische Blende im Bereich des Schließkörpers 3 angeordnet ist, die in der Ven¬ tilschließstellung eine definierte Durchströmung der Ventilbaugruppe erlaubt. Der Schließkörper 3 ist von einer Figure 1 thus shows representative of those depicted in Figu ¬ ren 2 to 8 valve assemblies in longitudinal section a general view of the basic construction of the valve assembly according to the invention is preferably used for damping pressure vibrations in a brake hydraulic system of a motor vehicle, including a hydraulic diaphragm in the region of the Closing body 3 is arranged, which allows a defined flow through the valve assembly in Ven ¬ tilschließstellung. The closing body 3 is of a
Schließfeder 1 beaufschlagt, die den Schließkörper 3 gemäß allen Abbildungen in seiner Grundstellung am Ventilsitz 9 hält, sodass in der Grundstellung ausschließlich der Querschnitt der beispielhaft in Figur 1 als Kerbe 11 ausgeführ¬ ten Blende im Ventilsitz 9 freigegeben ist. Ein Abheben des Schließkörpers 3 vom Ventilsitz 9 erfolgt somit ausschlie߬ lich differenzdruckabhängig, d.h. sofern der auf den Schließkörper 3 einwirkende Hydraulikdruck größer ist als der Federdruck der als Zylinderfeder ausgeführten Schließfeder 1. Die Schließfeder 1 ist aus mehreren Windungen eines Federdrahts hergestellt, die sich mit ihrem ersten Windungs¬ ende am Schließkörper 3 und mit ihrem zum ersten Windungsende diametral angeordneten Federbereich, der das zweite Windungsende umfasst, entweder unmittelbar am Boden des Ventil¬ gehäuses 8 oder an einem speziellen Federanschlag abstützt. Closing spring 1 is acted upon, which holds the closing body 3 according to all illustrations in its basic position on the valve seat 9, so that in the basic position exclusively the cross section of the example in Figure 1 as a notch 11 executed ¬ th aperture in the valve seat 9 is released. Lifting of the closing body 3 from the valve seat 9 thus takes place exclusively depending on the differential pressure, that is, if the pressure on the The closing spring 1 is made of a plurality of turns of a spring wire, which with its first turn ¬ end on the closing body 3 and with its first end of the coil diametrically arranged spring region, the second Windungsende comprises, either directly on the bottom of the valve ¬ housing 8 or supported on a special spring stop.
In den Figuren 1 bis 4 ist das Ventilgehäuse 8 zweiteilig ausgeführt, mit einem als Einpreßpatrone ausgeführten massi¬ ven Oberteil, der den Ventilsitz 9 trägt und einem topfför- migen, dünnwandigen Unterteil, das durch Tiefziehen von Dünnblech hergestellt und mit seinem Topfrand kraftschlüssig am Oberteil des Ventilgehäuses 8 befestigt ist. Das rohrför- mige Oberteil des Ventilgehäuses 8 besteht aus einem dick¬ wandigen Dreh- oder Kaltschlagteil, in dessen Hohlraum nach Figur 2 bis 4 stromaufwärts zum Ventilsitz 9 ein Sieb 15 fi¬ xiert ist. Das Durchströmen des Ventilgehäuses 8 erfolgt so¬ mit von oben nach unten in Richtung der Gehäuselängsachse, wozu der die Schließfeder 1 tragende Boden des topfförmigen Unterteils als auch die Mantelfläche des Unterteils mit ei¬ nem Durchgang versehen sind, der die Ventildurchströmung ermöglicht . In Figures 1 to 4, the valve housing 8 is made in two parts, with a designed as Einpreßpatrone massi ¬ ven upper part, which carries the valve seat 9 and a cup-shaped, thin-walled base, made by deep drawing of thin sheet and frictionally engaged with its pot edge on the upper part the valve housing 8 is attached. The rohrför--shaped upper part of the valve housing 8 consists of a thick-walled ¬ turning or cold-formed part, in which cavity according to FIG 2 to 4 upstream of the valve seat 9, a screen 15 is fi xed ¬. The flow through the valve housing 8 takes place ¬ so from top to bottom in the direction of the housing longitudinal axis, including the closing spring 1 supporting bottom of the cup-shaped lower part and the lateral surface of the lower part are provided with ei ¬ nem passage, which allows the valve flow.
Die Erfindung sieht zum Zwecke der Reduzierung des Ventilschaltgeräuschs in allen Ausführungsbeispielen vor, dass jeweils im Ventilgehäuse 8 schwingungsdämpfende Mittel 1, 2, 5 zusätzlich vorgesehen sind, die im Strömungsweg vor oder hinter dem Schließkörper 3 oder unmittelbar am Schließkörper 3 ausgebildet sind. The invention provides for the purpose of reducing the valve switching noise in all embodiments that in the valve housing 8 vibration damping means 1, 2, 5 are additionally provided, which are formed in the flow path in front of or behind the closing body 3 or directly on the closing body 3.
Zu diesem generellen Problemlösungsansatz geht aus der Figur 1 eine Ventilbaugruppe hervor, die im Strömungsweg vor dem Schließkörper 3 als schwingungsdämpfendes Mittel einen For the purpose of this general problem-solving approach, FIG. 1 shows a valve assembly which is located in the flow path in front of the valve Closing body 3 as a vibration damping means a
Drallerzeuger 2 im Ventilgehäuse 8 aufweist, der als Swirl generator 2 in the valve housing 8 has, as
Drallscheibe ausgeführt ist, wozu mehrere Leitschaufeln 4 über dem Umfang der Drallscheibe verteilt sind. Weiterhin weist das Ventilgehäuse 8 zwischen dem Drallerzeuger 2 und dem Ventilsitz 9 in Richtung des Schließkörpers 3 einen trichterförmig verengten Strömungsweg auf, der zur Verstärkung der Drallwirkung auf das Fluid bei Bedarf mit Rillen, Riefen oder gewinde- bzw. spiralförmigen Vertiefungen versehen ist. Swirl disk is executed, including several vanes 4 are distributed over the circumference of the swirl disk. Furthermore, the valve housing 8 between the swirl generator 2 and the valve seat 9 in the direction of the closing body 3 has a funnel-shaped narrowed flow path, which is provided for enhancing the swirl effect on the fluid if necessary with grooves, grooves or helical or spiral depressions.
Alternativ dazu geht aus der Figur 2 eine Ventilbaugruppe hervor, deren Schließfeder 1 als schwingungsdämpfendes Mit¬ tel ausgebildet ist, wozu die Schließfeder 1 eine progressi¬ ve Federkennlinie aufweist, wodurch sich die Bewegung des Schließkörpers 3 mit zunehmendem Ventilöffnungshub besser stabilisieren lässt, was sich auf die Eigenfrequenz des durch den Schließkörper 3 und die Schließfeder 1 gebildeten Schwingungssystems geräuschmindernd auswirkt. Alternatively, in the figure 2, a valve assembly forth whose closing spring 1 is designed as a vibration-damping With ¬ tel, for which purpose the closing spring 1 has a progressi ¬ ve spring characteristic, resulting in the movement of the closing element 3 can be better stabilized with an increasing valve opening stroke, which in itself the natural frequency of the vibration system formed by the closing body 3 and the closing spring 1 has a noise-reducing effect.
Anhand der Figur 3 wird eine verbesserte Ventilbaugruppe dargestellt, die als schwingungsdämpfendes Mittel innerhalb der Schließfeder 1 einen aus Kunststoff gefertigten Dämpfungszylinder 5 aufweist, dessen Mantelfläche zur Schwingungsreduzierung in Reibkontakt mit der Schließfeder 1 steht, wobei zur Begrenzung des Ventilöffnungshubs als auch des Anschlaggeräuschs der Schließkörper 3 an der Stirnfläche des Dämpfungszylinders 5 anlegbar ist. 3 shows an improved valve assembly is shown, which has a damping cylinder 5 made of plastic as a vibration damping means within the closing spring 1, whose lateral surface for vibration reduction is in frictional contact with the closing spring 1, wherein for limiting the Ventilöffnungshubs and the impact noise of the closing body. 3 can be applied to the end face of the damping cylinder 5.
In einer geringfügigen Abwandlung des in Figur 3 gezeigten Dämpfungszylinders 5, ist dieser in Figur 4 aus einem In a slight modification of the damping cylinder 5 shown in Figure 3, this is in Figure 4 from a
Elastomer gefertigt, wobei die Mantelfläche des Dämpfungszy¬ linders 5 in Richtung der Schließfeder 1 konvex gewölbt ist. Infolge der elastomeren Federeigenschaften und der konvexen Formgebung des Dämpfungszylinders 5 ergeben sich besonders gute geräuschdämpfende Eigenschaften im Zusammewirken mit dem Schließkörper 3 und der Schließfeder 1. Made elastomeric, wherein the lateral surface of Dämpfungszy ¬ Linders 5 is convexly curved in the direction of the closing spring 1. Due to the elastomeric spring properties and the convex Shape of the damping cylinder 5 results in particularly good noise-damping properties in conjunction with the closing body 3 and the closing spring. 1
Bezugnehmend auf die Ausführungsbeispiele nach Figur 1 bis 4 bleibt schließlich noch zu erwähnen, dass in der bevorzugten Ausführungsform des Schließkörpers 3 dieser als (Stahl-) Kugel und der Ventilsitz 9 als Kegeldichtsitz ausgeführt ist, wobei zur Einstellung eines konstanten Drosselvolumenstroms zwischen dem Schließkörper 3 und dem Ventilsitz 9 der Bypass in der Funktion einer hydraulischen Blende jeweils durch eine Kerbe 11 im Ventilsitz 9 hergestellt ist. Finally, with reference to the exemplary embodiments according to FIGS. 1 to 4, it should also be mentioned that in the preferred embodiment of the closing body 3 this is designed as a (steel) ball and the valve seat 9 as a conical seat, wherein a constant flow volume flow is established between the closing body 3 and the valve seat 9, the bypass is made in the function of a hydraulic shutter in each case by a notch 11 in the valve seat 9.
In den Figuren 5 bis 8 ist anstelle der Verwendung einer Kugel der Schließkörper 3 als Hohl- oder Vollzylinder oder als Ventilscheibe mit oder ohne Führungsstift 6 ausgeführt, auf dessen Besonderheiten nachfolgend eingegangen wird. In FIGS. 5 to 8, instead of the use of a ball, the closing body 3 is designed as a hollow or solid cylinder or as a valve disk with or without a guide pin 6, whose specific features are discussed below.
Im Einzelnen geht aus der Figur 5 ein kappenförmiger Hohlzylinder, in den Fig. 6, 7 jeweils ein Vollzylinder als In detail, from the figure 5 is a cap-shaped hollow cylinder, in Figs. 6, 7 in each case a solid cylinder as
Schließkörper 3 hervor, der jeweils in einer Schließkörperaufnahmebohrung 7 geführt ist, deren Mantelfläche in den Fig. 5, 7 den flüssigkeitsundurchlässigen Ventilsitz 9 im Ventilgehäuse 8 bildet, wozu der Schließkörper 3 mit einer engen Gleitpassung in der Schließkörperaufnahmebohrung 7 geführt ist. In den Figuren 5 bis 7 ist zur Freigabe des durch die Mantelfläche der Schließkörperaufnahmebohrung 7 gebildeten Ventilsitzes 9 die Schließkörperaufnahmebohrung 7 unterhalb des Schließkörpers 3 von einer Querbohrung 10 durchdrungen, die an einem auslassseitigen Strömungsweg im Ventilgehäuse 8 angeschlossen ist. Zur Aufnahme der Schließfe¬ der 1 im Ventilgehäuse 8 ist in den Figuren 5 bis 7 die Schließkörperaufnahmebohrung 7 als Sackbohrung ausgeführt, die im Aufnahmebereich der Schließfeder 1 von der Querboh- rung 10 durchdrungen ist. Zur Einstellung eines konstanten Drosselvolumenstroms zwischen dem Schließkörper 3 und dem Ventilsitz 9 ist in Fig. 5, 7 der Bypass unmittelbar durch einen zentralen Blendendurchgang 12 im Schließkörper 3 hergestellt, während in Figur 6 die Blendenfunktion durch einen Ringspalt 13 zwischen Schließkörper 3 und der Schließkörperaufnahmebohrung 7 gebildet ist, wozu der Schließkörper 3 ein entsprechend großes Laufspiel in der Schließkörperaufnahme¬ bohrung 7 aufweist. Locking body 3, which is guided in each case in a Schließkörperaufnahmebohrung 7, whose lateral surface in Figs. 5, 7 forms the liquid-impermeable valve seat 9 in the valve housing 8, to which the closing body 3 is guided with a tight sliding fit in the Schließkörperaufnahmebohrung 7. In FIGS. 5 to 7, to release the valve seat 9 formed by the lateral surface of the closing body receiving bore 7, the closing body receiving bore 7 below the closing body 3 is penetrated by a transverse bore 10 which is connected to an outlet-side flow path in the valve housing 8. For receiving the Schließfe ¬ the 1 in the valve housing 8, the Schließkörperaufnahmebohrung 7 is designed as a blind hole in the figures 5 to 7, which in the receiving area of the closing spring 1 of the Querboh- tion 10 is penetrated. For setting a constant throttle volume flow between the closing body 3 and the valve seat 9, the bypass is produced directly in FIG. 5, 7 by a central aperture 12 in the closing body 3, while in FIG. 6 the aperture function is provided by an annular gap 13 between the closing body 3 and the closing body receiving bore 7 is formed, including the closing body 3 has a correspondingly large running clearance in the closing body receiving ¬ bore 7.
Bei Verwendung eines Vollzylinders als Schließkörper 3 wird gemäß den Figuren 6, 7 vorteilhaft auf hochpräzise, standar¬ disierte Wälzlagerkörper zurückgegriffen, die als Zylinderrollen und Nadellager in hoher Oberflächengüte preisgünstig erhältlich sind. Analog dazu können Wälzlagerkugeln als Schließkörper 3 in den Figuren 1 bis 4 kostengünstig zum Einsatz gelangen. When using a solid cylinder as a closing body 3 is used in accordance with the figures 6, 7 advantageous to high-precision, standardized ¬ rolling bearings, which are available inexpensively as cylindrical rollers and needle roller bearings in high surface quality. Similarly, roller bearing balls can cost as closing body 3 in Figures 1 to 4 are used.
Schließlich geht aus der Figur 8 eine Ventilbaugruppe her¬ vor, dessen Schließkörperaufnahmebohrung 7 wie in den Fig. 5-7 unmittelbar in einem einteiligen, patronenförmigen Ventilgehäuse 8 ausgebildet ist, dessen vom Schließkörper 3 ab¬ gewandtes Ende der Schließkörperaufnahmebohrung 7 von einer Kugel 14 verschlossen ist, auf der sich das vom Schließkörper 3 abgewandte Ende der Schließfeder 1 selbstzentrierend abstützt. Anstelle der Ausführung als Kugel, Hohl- oder Vollkolben ist der Schließkörper 3 als Ventilscheibe ausge¬ führt, die bei Wunsch oder Bedarf zu Führung des scheibenförmigen Schließkörpers 3 mit einem mittig angeordneten Führungsstift 6 versehen ist, der sich entgegengesetzt zur Strömungsrichtung in den Ventileingang selbstzentrierend erstreckt. Der Ventilsitz 9 ist durch eine Bohrungsstufe am oberen Ende der Schließkörperaufnahmebohrung 7 gebildet, an deren Stirnfläche die Ringfläche des Schließkörpers 3 unter der Wirkung der Schließfeder 1 anliegt. Die in die Schließkörperaufnahmebohrung 7 einmündende Querbohrung 10 grenzt unmittelbar an den bevorzugt aus Kunststoff hergestellten Schließkörper 3 an, wozu sich die Querbohrung 10 in teilweiser Überdeckung mit der Mantelfläche des scheibenförmigen Schließkörpers 3 befindet. Der Führungsstift 6 als auch der scheibenförmige Schließkörper 3 sind mittig von einem Blen¬ dendurchgang 12 durchdrungen, sodass der Schließkörper 3 einen gedrosselten Volumenstrom in Richtung der Querbohrung 10 (Ventilausgang) ermöglicht, solange der Schließkörper 3 noch nicht den zum Abheben vom Ventilsitz 9 erforderlichen hydraulischen Öffnungsdruck ausgesetzt ist. Finally, from FIG 8, a valve assembly ago ¬ before, the Schließkörperaufnahmebohrung 7 as in Figs. 5-7 is formed directly in a one-piece, cartridge-shaped valve housing 8, the closing body 3 from ¬ end facing the Schließkörperaufnahmebohrung 7 closed by a ball 14 is on which the closing body 3 facing away from the end of the closing spring 1 is self-centering. Instead of the execution as a ball, hollow or solid piston of the closing body 3 is out as a valve disc ¬ , which is provided on request or need to guide the disc-shaped closing body 3 with a centrally disposed guide pin 6, which extends opposite to the flow direction in the valve inlet self-centering , The valve seat 9 is formed by a bore step at the upper end of the Schließkörperaufnahmebohrung 7, at the end face of the annular surface of the closing body 3 below the effect of the closing spring 1 is present. The opening into the Schließkörperaufnahmebohrung 7 transverse bore 10 directly adjacent to the preferably made of plastic closing body 3, to which the transverse bore 10 is in partial overlap with the lateral surface of the disc-shaped closing body 3. The guide pin 6 and the disc-shaped closing body 3 are centrally penetrated by a Blen ¬ dendurchgang 12, so that the closing body 3 allows a throttled flow in the direction of the transverse bore 10 (valve outlet), as long as the closing body 3 is not yet necessary for lifting the valve seat 9 hydraulic Opening pressure is exposed.
Bezugs zeichenliste Reference sign list
1 Schließfeder 1 closing spring
2 Drallerzeuger 2 swirl generators
3 Schließkörper 3 closing bodies
4 Leitschaufel 4 vane
5 Dämpfungszylinder 5 damping cylinders
6 Führungsstift 6 guide pin
7 Schließkörperaufnahmebohrung 7 closing body receiving bore
8 Ventilgehäuse 8 valve housing
9 Ventilsitz 9 valve seat
10 Querbohrung 10 transverse bore
11 Kerbe 11 notch
12 Blendendurchgang 12 aperture passage
13 Ringspalt 13 annular gap
14 Kugel 14 ball
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011078250.8 | 2011-06-29 | ||
| DE201110078250 DE102011078250A1 (en) | 2011-06-29 | 2011-06-29 | valve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013000783A1 true WO2013000783A1 (en) | 2013-01-03 |
Family
ID=46513706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/061813 Ceased WO2013000783A1 (en) | 2011-06-29 | 2012-06-20 | Valve assembly |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102011078250A1 (en) |
| WO (1) | WO2013000783A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013202588B4 (en) * | 2012-07-04 | 2025-05-08 | Continental Automotive Technologies GmbH | Valve assembly |
| DE102014214886B4 (en) | 2014-07-29 | 2017-12-14 | Volkswagen Aktiengesellschaft | Double-acting check valve |
| DE102014214887B4 (en) | 2014-07-29 | 2017-12-14 | Volkswagen Aktiengesellschaft | Steamed check valve |
| DE102015207728B4 (en) | 2015-04-28 | 2025-01-30 | Continental Automotive Technologies GmbH | valve assembly |
| DE102015217212B4 (en) | 2015-09-09 | 2024-01-18 | Continental Automotive Technologies GmbH | Valve assembly |
| WO2022249078A1 (en) * | 2021-05-28 | 2022-12-01 | ロベルト•ボッシュ•ゲゼルシャフト•ミト•ベシュレンクテル•ハフツング | Pulsation reducing device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1660550U (en) * | 1953-02-11 | 1953-08-06 | Conrad Bruesselbach Fa | VIBRATION DAMPING FOR SUSPENSIONS. |
| US2896663A (en) * | 1955-02-28 | 1959-07-28 | Carl M Mena | Check valve with valve seat of resilient material |
| GB1022342A (en) * | 1962-01-15 | 1966-03-09 | Hobourn Eaton Mfg Co Ltd | Improvements relating to flow control valves |
| US3247967A (en) * | 1963-04-17 | 1966-04-26 | Bendix Corp | Flow divider valve |
| JPS6192373A (en) * | 1984-10-09 | 1986-05-10 | Aisin Warner Ltd | Opening and closing valve |
| DE8901008U1 (en) * | 1989-01-30 | 1989-05-24 | Frohn, Walter, Dr.-Ing., 8000 München | Splash guard device for degassing valves |
| EP0407721A1 (en) * | 1989-07-14 | 1991-01-16 | Robert Bosch Gmbh | Device for the damping of pressure pulsations |
| EP0597610A1 (en) * | 1992-11-09 | 1994-05-18 | Nabco Limited | Liquid pressure source unit for liquid-operated booster |
| EP1612449A1 (en) * | 2004-06-28 | 2006-01-04 | Robert Bosch Gmbh | Resilient Element |
| DE102009006980A1 (en) | 2008-02-08 | 2009-08-13 | Continental Teves Ag & Co. Ohg | Hydraulic unit with improved pulsation damping |
-
2011
- 2011-06-29 DE DE201110078250 patent/DE102011078250A1/en not_active Withdrawn
-
2012
- 2012-06-20 WO PCT/EP2012/061813 patent/WO2013000783A1/en not_active Ceased
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1660550U (en) * | 1953-02-11 | 1953-08-06 | Conrad Bruesselbach Fa | VIBRATION DAMPING FOR SUSPENSIONS. |
| US2896663A (en) * | 1955-02-28 | 1959-07-28 | Carl M Mena | Check valve with valve seat of resilient material |
| GB1022342A (en) * | 1962-01-15 | 1966-03-09 | Hobourn Eaton Mfg Co Ltd | Improvements relating to flow control valves |
| US3247967A (en) * | 1963-04-17 | 1966-04-26 | Bendix Corp | Flow divider valve |
| JPS6192373A (en) * | 1984-10-09 | 1986-05-10 | Aisin Warner Ltd | Opening and closing valve |
| DE8901008U1 (en) * | 1989-01-30 | 1989-05-24 | Frohn, Walter, Dr.-Ing., 8000 München | Splash guard device for degassing valves |
| EP0407721A1 (en) * | 1989-07-14 | 1991-01-16 | Robert Bosch Gmbh | Device for the damping of pressure pulsations |
| EP0597610A1 (en) * | 1992-11-09 | 1994-05-18 | Nabco Limited | Liquid pressure source unit for liquid-operated booster |
| EP1612449A1 (en) * | 2004-06-28 | 2006-01-04 | Robert Bosch Gmbh | Resilient Element |
| DE102009006980A1 (en) | 2008-02-08 | 2009-08-13 | Continental Teves Ag & Co. Ohg | Hydraulic unit with improved pulsation damping |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011078250A1 (en) | 2013-01-03 |
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