EP1293673B1 - Vane pump - Google Patents
Vane pump Download PDFInfo
- Publication number
- EP1293673B1 EP1293673B1 EP02020795A EP02020795A EP1293673B1 EP 1293673 B1 EP1293673 B1 EP 1293673B1 EP 02020795 A EP02020795 A EP 02020795A EP 02020795 A EP02020795 A EP 02020795A EP 1293673 B1 EP1293673 B1 EP 1293673B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- end plate
- pressure field
- pump according
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 210000003734 kidney Anatomy 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
Definitions
- the invention relates to a pump, in particular a vane or Roller pump according to the closer defined in the preamble of claim 1 Art.
- US Pat. No. 6,234,776 B1 describes a pump with a housing, in that a limited by a face plate rotor set is arranged, wherein the Runner set has a curve ring and a runner with wings and wherein the End plate is provided with an adjacent to the rotor set back pressure field, where the pump working pressure is applied.
- a generic vane pump is known from DE 41 12 196 A1. Other such pumps are also known from the prior art and are often used in practice.
- the well-known from DE 41 12 196 A1 vane pump has in the usual way on a drive shaft on a rotor set.
- the runner set consists of a curve ring and a runner with wings.
- the wings are in the runner guided radially sliding. On the outside, the wings abut the curve ring.
- Of the Runner is between a front end plate and a rear pressure plate arranged.
- the pressure plate may be similar in alternative embodiments Face plate be formed so that the pressure plate can also be referred to as a face plate.
- Pressure plate Behind the known from the generic document Pressure plate is a pressure chamber that over Pressure ports, commonly referred to as Druckniere be, with the pressure-enhancing delivery chambers communicates.
- the pressure chamber causes a front play compensation, to minimize the leak under pressure.
- the extraction rooms are between the runner, formed the curve ring and the wings.
- the pressure medium in general oil, flows through the suction-side delivery chambers from a tank via an inlet bore and an annular chamber too.
- a setting or embedding of the cam ring results from the fact that by the operation of the pump, or the conveying of the working fluid mostly under high pressure Pulsations arise, leading to micro-movements of the cam ring in the radial and axial directions. As has shown in endurance testing, this leads into the result of setting or embedding the cam ring into the housing-side face plate, i. in the Face plate, which is not adjacent to the pressure chamber. Material fatigue will be accelerated or generated.
- the print room supports embedding of the cam ring in the housing-side face plate, because the pressure chamber on the cam ring a Pressure in this direction.
- the present invention is based on the object to solve the disadvantages of the prior art and the known pumps, in particular the vane and To improve roller pumps such that a setting or Embedding the cam ring in a face plate largely is excluded.
- the fact that the face plate with at least one formed the runner set adjacent back pressure field is a back pressure on the runner set resp applied the cam ring contained in the rotor set become.
- the counter pressure field can be in particular simple way, approximately cost neutral, in the Integrate face plate and can, for example, groove-shaped be educated.
- the back pressure or the counterforce is doing in a simple Way through the working medium, for example Oil, and the pressure generated by the pump, built.
- the working medium for example Oil
- the working fluid or the pump pressure without any further supply of energy or an elaborate construction would be necessary, an embedding of the cam ring in the face plate.
- the counter-pressure field can be designed such that a setting process of the cam ring in the face plate is excluded, and yet leaky areas, could escape through the example, a leakage oil, be avoided.
- it can be provided that the cam ring floats on the counter pressure field.
- the runner set enclosing face plates with a corresponding Be provided counter pressure field.
- the solution according to the invention is not limited to the face plates, the on its front side facing away from the runner set a housing wall are arranged, but extends also on the face plates, which at the of the runner set facing away from a pressure chamber or the like.
- the at least one counter-pressure field with a pressure kidney of the face plate in conjunction stands and the front plate with two pressure kidneys each having an associated counter-pressure field.
- Characterized in that the face plate has two pressure kidneys, each connected to a back pressure field can, in a simple way, a drag or a Counterpressure are built, the setting of the cam ring prevented in the corresponding face plate.
- the introduction of the working fluid is done in a simple Way through the connection of the printing kidney with the counter pressure field. Structurally, there are no special ones Action required because the face plate in general Embodiments has two pressure kidneys.
- the use of two allows Printing kidney or two associated back pressure fields, Building a relatively constant over the surface Counterpressure, thereby reducing the burden on the reduced individual components and the occurrence of leaks are avoided.
- the Counter-pressure field in the area of a bearing surface of the cam ring is arranged.
- the at least one Print kidney provided with the counter pressure field Face plate is designed as a blind hole or through the adjacent housing or a housing cover delimited facing away from the runner end face is.
- Such a configuration has for use vane pumps, roller pumps or the like proved to be particularly suitable.
- An inflow of the working fluid between the housing and the face plate provided with the counter pressure field is not desired in general and can by the Design of the pressure kidney as a blind hole or thereby, that the pressure kidney through the adjacent housing or a housing cover is limited prevented become.
- At least one end plate integral with the housing cover and / or the housing formed is.
- a housing or a housing cover which contains the functions of the end plate, according to the invention also easily with a back pressure field Be provided as a setting of the runner set or of the cam ring also occur in this case can.
- End plates that are in the housing or in the housing cover are integrated, are already off known in the art.
- One of the essential Functions of the face plates is also limiting the Rotor assembly.
- the double-stroke vane pump shown in FIG is basically of known type, including e.g. Reference is made to DE 41 12 196 A1, which is why below only for the invention essential parts be described in more detail.
- a rotor set 2 On a drive shaft 1, a rotor set 2 is arranged, consisting of a cam ring 3 and a rotor or rotor 4 with wings 5 is.
- the wings 5 are radial in a known manner slidably guided in the rotor 4. Lying on the outside the wings 5 on the cam ring 3 at. In the embodiment is the use of ten radial arranged wings 5 are provided.
- the rotor set 2 is between a housing side Face plate 6, to the housing 7 of the vane pump adjacent and a cover-side end plate 8, which adjoins a housing cover 9, at least partially, arranged.
- a pressure chamber 10 At the remote from the rotor set 2 Front side of the cover-side end plate. 8 there is a pressure chamber 10 so that the lid side Face plate 8 often referred to as a pressure plate becomes.
- the pressure chamber 10 is about pressure kidneys 11 with the pressurized delivery rooms in conjunction.
- the Pumping rooms are generally between the Runners 4, the cam ring 3 and the wings 5 formed.
- the working or pressure agent in general oil, does not flow from the suction-side delivery chambers of one represented tank via an inlet bore 12 and a Ring chamber 13 to.
- cover-side end plate 8 In the cover-side end plate 8 are located in known manner partially annular channels 14, in known Way with not shown under wing spaces are connected and for pressing the wings 5 serve. For fixing the cover-side face plate 8 may be provided holes not shown, engage in the corresponding pins.
- the Housing-side face plate 6 two counter-pressure fields 15th on.
- the counter-pressure fields 15 are each with a corresponding adjacent Druckniere 16, the are located in the housing-side end plate 6, connected.
- In the counter-pressure fields 15 can on the Pressing 16 the working fluid to flow, so that the pump working pressure is applied.
- the generated thereby Back pressure prevents setting or embedding of the Curved ring 3 in the housing-side end plate. 6
- Fig. 1 and Fig. 2 are according to the invention two counter pressure fields 15 and two pressure kidneys 16 provided in the housing-side end plate 6.
- the counter-pressure fields 15 are in the range of one Support surface of the cam ring 3 is arranged.
- FIGS. 1 and 2 are the back pressure fields 16 through the housing side Limited end plate 6 and the cam ring 3.
- the embodiment shows here, as in particular from Fig. 2 can be seen, a particularly inexpensive too realizing embodiment in which the counter-pressure fields 15 are integrated in the face plate 6.
- the counter pressure fields 15 are formed annular arc, however, in alternative embodiments also have other adapted to the face plate 6 forms.
- the counter-pressure fields 15 can be used as grooves, depressions, Recesses, notches, cuts, Hollows or the like may be formed. there Training as a groove has proven to be particularly suitable exposed.
- Fig. 2 holes 17 are used for fixing the housing-side end plate 6 on the cam ring 3.
- dowels with a thickness of 5 mm are used.
- the solution according to the invention is not on the pump type is limited.
- the counter-pressure fields 15 for this purpose, for example, provided be that even the cover-side end plate 8 and the printing plate with counter pressure fields 15 in addition or alternatively to the use of back pressure fields 15 in the cover-side end plate 8, is provided.
- the housing-side end plate 6 and the lid-side Face plate 8 can of course also in one piece with the housing 7 or the housing cover. 9 be trained or integrated in these.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Die Erfindung betrifft eine Pumpe, insbesondere eine Flügelzellen- oder
Rollenpumpe nach der im Oberbegriff von Anspruch 1 näher definierten Art.The invention relates to a pump, in particular a vane or
Roller pump according to the closer defined in the preamble of
In der US 6 234 776 B1 wird eine Pumpe beschrieben mit einem Gehäuse, indem ein von einer Stirnplatte begrenzter Läufersatz angeordnet ist, wobei der Läufersatz einen Kurvenring sowie einen Läufer mit Flügeln aufweist und wobei die Stirnplatte mit einem an den Läufersatz grenzenden Gegendruckfeld versehen ist, an dem der Pumpenarbeitsdruck anliegt.US Pat. No. 6,234,776 B1 describes a pump with a housing, in that a limited by a face plate rotor set is arranged, wherein the Runner set has a curve ring and a runner with wings and wherein the End plate is provided with an adjacent to the rotor set back pressure field, where the pump working pressure is applied.
Eine gattungsgemäße Flügelzellenpumpe ist aus der DE 41 12 196 A1 bekannt. Weitere derartige Pumpen sind ebenfalls aus dem Stand der Technik bekannt und werden in der Praxis häufig eingesetzt.A generic vane pump is known from DE 41 12 196 A1. Other such pumps are also known from the prior art and are often used in practice.
Die aus der DE 41 12 196 A1 bekannte Flügelzellenpumpe weist in üblicher Weise auf einer Antriebswelle einen Läufersatz auf. Der Läufersatz besteht dabei aus einem Kurvenring sowie einem Läufer mit Flügeln. Die Flügel sind in dem Läufer radial gleitend geführt. Außenseitig liegen die Flügel an dem Kurvenring an. Der Läufer ist dabei zwischen einer vorderen Stirnplatte und einer hinteren Druckplatte angeordnet. Die Druckplatte kann in alternativen Ausführungsformen ähnlich der Stirnplatte ausgebildet sein, so daß die Druckplatte auch als Stirnplatte bezeichnet werden kann.The well-known from DE 41 12 196 A1 vane pump has in the usual way on a drive shaft on a rotor set. The runner set consists of a curve ring and a runner with wings. The wings are in the runner guided radially sliding. On the outside, the wings abut the curve ring. Of the Runner is between a front end plate and a rear pressure plate arranged. The pressure plate may be similar in alternative embodiments Face plate be formed so that the pressure plate can also be referred to as a face plate.
Hinter der aus der gattungsgemäßen Schrift bekannten Druckplatte befindet sich ein Druckraum, der über Drucköffnungen, die im allgemeinen als Druckniere bezeichnet werden, mit den druckfördernden Förderräumen in Verbindung steht. Der Druckraum bewirkt eine Stirnspielkompensation, um das Lecköl unter Druck zu minimieren. Die Förderräume werden zwischen dem Läufer, dem Kurvenring und den Flügeln gebildet. Das Druckmittel, im allgemeinen Öl, fließt den saugseitigen Förderräumen von einem Tank über eine Zulaufbohrung und eine Ringkammer zu.Behind the known from the generic document Pressure plate is a pressure chamber that over Pressure ports, commonly referred to as Druckniere be, with the pressure-enhancing delivery chambers communicates. The pressure chamber causes a front play compensation, to minimize the leak under pressure. The extraction rooms are between the runner, formed the curve ring and the wings. The pressure medium, in general oil, flows through the suction-side delivery chambers from a tank via an inlet bore and an annular chamber too.
Wie sich in Versuchen und in der Praxis gezeigt hat, kann sich in nachteilhafter Weise ein Setzen bzw. Einbetten des Kurvenringes in die Stirnplatte bzw. die Stirnplatten einstellen. Dies erfolgt überwiegend bei der Stirnplatte, deren von dem Läufersatz abgewandte Stirnseite gehäuseseitig anliegt.As has been shown in experiments and in practice, can be disadvantageously a setting or embedding of the cam ring in the face plate or the Adjust face plates. This happens mostly at the face plate, facing away from the runner set Front side of the housing is applied.
Ein Setzen bzw. Einbetten des Kurvenringes resultiert daraus, daß durch den Betrieb der Pumpe, bzw. das Fördern des Arbeitsmittels zumeist unter hohem Druck Pulsationen entstehen, die zu Mikrobewegungen des Kurvenringes in radialer und axialer Richtung führen. Wie sich in Dauererprobungen gezeigt hat, führt dies in der Folge zu einem Setzen bzw. Einbetten des Kurvenringes in die gehäuseseitige Stirnplatte, d.h. in die Stirnplatte, die nicht an den Druckraum angrenzt. Materialermüdungserscheinungen werden dadurch beschleunigt bzw. erzeugt. Der Druckraum unterstützt das Einbetten des Kurvenringes in die gehäuseseitige Stirnplatte, da der Druckraum auf den Kurvenring einen Druck in diese Richtung ausübt. Insbesondere im LKW-Bereich wird mit einem sehr hohen Druckniveau von beispielsweise 200 bar gearbeitet, so daß ein Setzen bzw. Einbetten des Kurvenringes entsprechend beschleunigt wird. Die Setzerscheinung kann zum Aufheben des Stirnspieles des Läufersatzes führen. Die Folge daraus ist ein kompletter Funktionsausfall der Pumpe.A setting or embedding of the cam ring results from the fact that by the operation of the pump, or the conveying of the working fluid mostly under high pressure Pulsations arise, leading to micro-movements of the cam ring in the radial and axial directions. As has shown in endurance testing, this leads into the result of setting or embedding the cam ring into the housing-side face plate, i. in the Face plate, which is not adjacent to the pressure chamber. Material fatigue will be accelerated or generated. The print room supports embedding of the cam ring in the housing-side face plate, because the pressure chamber on the cam ring a Pressure in this direction. Especially in the truck sector comes with a very high pressure level of for example Worked 200 bar, so that a setting or Embedding the cam ring accelerates accordingly becomes. The setting phenomenon can be used to cancel the front play of the runner's set. The consequence is a complete malfunction of the pump.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die Nachteile des Standes der Technik zu lösen und die bekannten Pumpen, insbesondere die Flügelzellen- und Rollenpumpen derart zu verbessern, daß ein Setzen bzw. Einbetten des Kurvenringes in eine Stirnplatte weitgehend ausgeschlossen ist.The present invention is based on the object to solve the disadvantages of the prior art and the known pumps, in particular the vane and To improve roller pumps such that a setting or Embedding the cam ring in a face plate largely is excluded.
Erfindungsgemäß wird diese Aufgabe durch die im kennzeichnenden
Teil von Anspruch 1 genannten Merkmale gelöst.According to the invention, this object is achieved by the characterizing
Part of
Dadurch, daß die Stirnplatte mit wenigstens einem an den Läufersatz grenzenden Gegendruckfeld ausgebildet ist, kann ein Gegendruck auf den Läufersatz bzw. auf den im Läufersatz enthaltenen Kurvenring aufgebracht werden. Die axiale Bewegung des Läufersatzes bzw. -des Kurvenringes und somit der Setzvorgang in die mit dem Gegendruckfeld versehene Stirnplatte kann somit verhindert werden. Das Gegendruckfeld läßt sich in besonders einfacher Weise, annähernd kostenneutral, in die Stirnplatte integrieren und kann beispielsweise nutförmig ausgebildet sein.The fact that the face plate with at least one formed the runner set adjacent back pressure field is a back pressure on the runner set resp applied the cam ring contained in the rotor set become. The axial movement of the runner set or des Curved ring and thus the setting process in the with Counter-pressure field provided face plate can thus be prevented become. The counter pressure field can be in particular simple way, approximately cost neutral, in the Integrate face plate and can, for example, groove-shaped be educated.
Der Gegendruck bzw. die Gegenkraft wird dabei in einfacher Weise durch das Arbeitsmedium, beispielsweise Öl, und dem Druck, den die Pumpe erzeugt, aufgebaut. Somit verhindert das Arbeitsmittel bzw. der Pumpendruck, ohne daß eine weitere Zufuhr von Energie oder eine aufwendige Konstruktion notwendig wäre, ein Einbetten des Kurvenringes in die Stirnplatte.The back pressure or the counterforce is doing in a simple Way through the working medium, for example Oil, and the pressure generated by the pump, built. Thus, the working fluid or the pump pressure, without any further supply of energy or an elaborate construction would be necessary, an embedding of the cam ring in the face plate.
Das Gegendruckfeld läßt sich derart ausgestalten, daß ein Setzvorgang des Kurvenringes in der Stirnplatte ausgeschlossen ist, und trotzdem undichte Bereiche, durch die beispielsweise ein Leckageöl austreten könnte, vermieden werden. Hierzu kann vorgesehen sein, daß der Kurvenring auf dem Gegendruckfeld schwimmt.The counter-pressure field can be designed such that a setting process of the cam ring in the face plate is excluded, and yet leaky areas, could escape through the example, a leakage oil, be avoided. For this purpose, it can be provided that the cam ring floats on the counter pressure field.
Selbstverständlich können auch beide, den Läufersatz umschließende Stirnplatten mit einem entsprechenden Gegendruckfeld versehen sein. Die erfindungsgemäße Lösung beschränkt sich nicht auf die Stirnplatten, die an ihrer von dem Läufersatz abgewandten Stirnseite an einer Gehäusewandung angeordnet sind, sondern erstreckt sich auch auf die Stirnplatten, die an der von dem Läufersatz abgewandten Stirnseite einen Druckraum oder dergleichen aufweisen.Of course, both, the runner set enclosing face plates with a corresponding Be provided counter pressure field. The solution according to the invention is not limited to the face plates, the on its front side facing away from the runner set a housing wall are arranged, but extends also on the face plates, which at the of the runner set facing away from a pressure chamber or the like.
Der Einsatz eines Gegendruckfeldes in einer der Stirnplatten ist sowohl bei einhübigen Flügelzellenpumpen als auch bei mehrhübigen Flügelzellenpumpen bzw. bei Rollenpumpen und weiteren Pumpenformen, bei denen ein Setzen bzw. Einbetten des Läufersatzes bzw. des Kurvenringes zu erwarten ist, möglich.The use of a back pressure field in one of the end plates is both with single-hull vane pumps as well as in mehrhübigen vane pumps or at Roller pumps and other pump forms, where a Setting or embedding the runner set or the curve ring is to be expected, possible.
Von Vorteil ist es, wenn das wenigstens eine Gegendruckfeld mit einer Druckniere der Stirnplatte in Verbindung steht und die Stirnplatte zwei Drucknieren mit jeweils einem zugeordneten Gegendruckfeld aufweist.It is advantageous if the at least one counter-pressure field with a pressure kidney of the face plate in conjunction stands and the front plate with two pressure kidneys each having an associated counter-pressure field.
Dadurch, daß die Stirnplatte zwei Drucknieren aufweist, die jeweils mit einem Gegendruckfeld verbunden sind, kann in einfacher Weise eine Gegenkraft bzw. ein Gegendruck aufgebaut werden, der ein Setzen des Kurvenrings in die entsprechende Stirnplatte verhindert. Das Einbringen des Arbeitsmittels erfolgt in einfacher Weise durch die Verbindung der Druckniere mit dem Gegendruckfeld. Konstruktiv sind hierfür keine besonderen Maßnahmen erforderlich, da die Stirnplatte in allgemeinen Ausführungsformen zwei Drucknieren aufweist.Characterized in that the face plate has two pressure kidneys, each connected to a back pressure field can, in a simple way, a drag or a Counterpressure are built, the setting of the cam ring prevented in the corresponding face plate. The introduction of the working fluid is done in a simple Way through the connection of the printing kidney with the counter pressure field. Structurally, there are no special ones Action required because the face plate in general Embodiments has two pressure kidneys.
In vorteilhafter Weise ermöglicht der Einsatz von zwei Drucknieren bzw. zwei damit verbundenen Gegendruckfeldern, das Aufbauen eines über die Fläche relativ konstanten Gegendruckes, wodurch die Belastung für die einzelnen Bauteile verringert und das Auftreten von undichten Stellen vermieden wird.Advantageously, the use of two allows Printing kidney or two associated back pressure fields, Building a relatively constant over the surface Counterpressure, thereby reducing the burden on the reduced individual components and the occurrence of leaks are avoided.
Erfindungsgemäß kann ferner vorgesehen sein, daß das Gegendruckfeld im Bereich einer Auflagefläche des Kurvenringes angeordnet ist.According to the invention may also be provided that the Counter-pressure field in the area of a bearing surface of the cam ring is arranged.
Wie sich in Versuchen herausgestellt hat, tritt die Setzerscheinung des Läufersatzes primär im Bereich der Auflagefläche des Kurvenringes auf. Eine Anordnung des Gegendruckfeldes in diesem Bereich hat sich daher für einen besonders effektiven Einsatz als geeignet herausgestellt.As has been shown in experiments, the occurs Settling of the runner set primarily in the field of Support surface of the cam ring on. An arrangement of the Back pressure field in this area has therefore for a particularly effective use proved suitable.
In einer konstruktiven Ausgestaltung der Erfindung kann ferner vorgesehen sein, daß die wenigstens eine Druckniere der mit dem Gegendruckfeld versehenen Stirnplatte als Sackbohrung ausgebildet ist oder durch das angrenzende Gehäuse oder einen Gehäusedeckel an der von dem Läufersatz abgewandten Stirnseite begrenzt ist.In a constructive embodiment of the invention can also be provided that the at least one Print kidney provided with the counter pressure field Face plate is designed as a blind hole or through the adjacent housing or a housing cover delimited facing away from the runner end face is.
Eine derartige Ausgestaltung hat sich für den Einsatz von Flügelzellenpumpen, Rollenpumpen oder dergleichen als besonders geeignet herausgestellt.Such a configuration has for use vane pumps, roller pumps or the like proved to be particularly suitable.
Ein Einströmen des Arbeitsmittels zwischen dem Gehäuse und der mit dem Gegendruckfeld versehene Stirnplatte ist im allgemeinen nicht gewünscht und kann durch die Ausgestaltung der Druckniere als Sackbohrung bzw. dadurch, daß die Druckniere durch das angrenzende Gehäuse oder einen Gehäusedeckel begrenzt wird, verhindert werden.An inflow of the working fluid between the housing and the face plate provided with the counter pressure field is not desired in general and can by the Design of the pressure kidney as a blind hole or thereby, that the pressure kidney through the adjacent housing or a housing cover is limited prevented become.
In einer Weiterbildung der Erfindung kann vorgesehen sein, daß wenigstens eine Stirnplatte einstückig mit dem Gehäusedeckel und/oder dem Gehäuse ausgebildet ist.In a further development of the invention can be provided be that at least one end plate integral with the housing cover and / or the housing formed is.
Selbstverständlich kann in alternativen Ausführungsformen auf eine separate Ausbildung einer Stirnplatte verzichtet werden. Ein Gehäuse oder ein Gehäusedeckel, der die Funktionen der Stirnplatte enthält, kann erfindungsgemäß ebenfalls problemlos mit einem Gegendruckfeld versehen werden, da ein Setzen des Läufersatzes bzw. des Kurvenringes auch in diesem Fall auftreten kann. Stirnplatten, die in dem Gehäuse oder in dem Gehäusedeckel integriert sind, sind bereits aus dem Stand der Technik bekannt. Eine der wesentlichen Funktionen der Stirnplatten ist auch das Begrenzen des Läufersatzes.Of course, in alternative embodiments on a separate formation of a face plate be waived. A housing or a housing cover, which contains the functions of the end plate, according to the invention also easily with a back pressure field Be provided as a setting of the runner set or of the cam ring also occur in this case can. End plates that are in the housing or in the housing cover are integrated, are already off known in the art. One of the essential Functions of the face plates is also limiting the Rotor assembly.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den weiteren Unteransprüchen und aus dem nachfolgend anhand der Zeichnung prinzipmäßig dargestellten Ausführungsbeispiel.Advantageous embodiments and further developments of Invention will become apparent from the further subclaims and from the following with reference to the drawing illustrated in principle embodiment.
Es zeigt:
- Fig. 1
- einen Längsschnitt durch eine Flügelzellenpumpe; und
- Fig. 2
- eine Draufsicht auf eine Stirnplatte mit zwei erfindungsgemäßen Gegendruckfeldern.
- Fig. 1
- a longitudinal section through a vane pump; and
- Fig. 2
- a plan view of a face plate with two back pressure fields according to the invention.
Die in der Fig. 1 dargestellte doppelhubige Flügelzellenpumpe ist grundsätzlich von bekannter Bauart, wozu z.B. auf die DE 41 12 196 A1 verwiesen wird, weshalb nachfolgend nur für die Erfindung wesentliche Teile näher beschrieben werden.The double-stroke vane pump shown in FIG is basically of known type, including e.g. Reference is made to DE 41 12 196 A1, which is why below only for the invention essential parts be described in more detail.
Auf einer Antriebswelle 1 ist ein Läufersatz 2 angeordnet,
der aus einem Kurvenring 3 und einem Rotor
bzw. Läufer 4 mit Flügeln 5 besteht.On a
Die Flügel 5 sind dabei in bekannter Weise radial
gleitend in dem Läufer 4 geführt. Außenseitig liegen
die Flügel 5 an dem Kurvenring 3 an. In dem Ausführungsbeispiel
ist dabei der Einsatz von zehn radial
angeordneten Flügeln 5 vorgesehen. The wings 5 are radial in a known manner
slidably guided in the rotor 4. Lying on the outside
the wings 5 on the
Der Läufersatz 2 ist zwischen einer gehäuseseitigen
Stirnplatte 6, die an das Gehäuse 7 der Flügelzellenpumpe
angrenzt und einer deckelseitigen Stirnplatte 8,
die an einen Gehäusedeckel 9, zumindest teilweise angrenzt,
angeordnet. An der von dem Läufersatz 2 abgewandten
Stirnseite der deckelseitigen Stirnplatte 8
befindet sich ein Druckraum 10, so daß die deckelseitige
Stirnplatte 8 häufig als Druckplatte bezeichnet
wird. Der Druckraum 10 steht über Drucknieren 11 mit
den druckführenden Förderräumen in Verbindung. Die
Förderräume werden dabei im allgemeinen zwischen dem
Läufer 4, dem Kurvenring 3 und den Flügeln 5 gebildet.The rotor set 2 is between a housing
Das Arbeits- oder Druckmittel, im allgemeinen Öl,
fließt den saugseitigen Förderräumen von einem nicht
dargestellten Tank über eine Zulaufbohrung 12 und eine
Ringkammer 13 zu.The working or pressure agent, in general oil,
does not flow from the suction-side delivery chambers of one
represented tank via an inlet bore 12 and a
In der deckelseitigen Stirnplatte 8 befinden sich in
bekannter Weise teilringförmige Kanäle 14, die in bekannter
Weise mit nicht näher dargestellten Unterflügelräumen
verbunden sind und zum Andrücken der Flügel
5 dienen. Zum Fixieren der deckelseitigen Stirnplatte
8 können nicht dargestellte Bohrungen vorgesehen sein,
in die entsprechende Stifte eingreifen.In the cover-
Wie ebenfalls aus Fig. 1 ersichtlich ist, weist die
gehäuseseitige Stirnplatte 6 zwei Gegendruckfelder 15
auf. Die Gegendruckfelder 15 sind dabei jeweils mit
einer entsprechend angrenzenden Druckniere 16, die
sich in der gehäuseseitigen Stirnplatte 6 befinden,
verbunden. In die Gegendruckfelder 15 kann über die
Drucknieren 16 das Arbeitsmittel einströmen, so daß
der Pumpenarbeitsdruck anliegt. Der dadurch erzeugte
Gegendruck verhindert ein Setzen bzw. Einbetten des
Kurvenringes 3 in die gehäuseseitige Stirnplatte 6.As can be seen also from Fig. 1, the
Housing-
Wie aus Fig. 1 und Fig. 2 ersichtlich, sind erfindungsgemäß
zwei Gegendruckfelder 15 und zwei Drucknieren
16 in der gehäuseseitigen Stirnplatte 6 vorgesehen.
Die Gegendruckfelder 15 sind dabei im Bereich einer
Auflagefläche des Kurvenringes 3 angeordnet.As can be seen from Fig. 1 and Fig. 2, are according to the invention
two counter pressure fields 15 and two
Wie sich ebenfalls aus den Figuren 1 und 2 ergibt,
sind die Gegendruckfelder 16 durch die gehäuseseitige
Stirnplatte 6 und den Kurvenring 3 begrenzt. Das Ausführungsbeispiel
zeigt hierbei, wie insbesondere aus
Fig. 2 ersichtlich, eine besonders kostengünstig zu
realisierende Ausgestaltung, in der die Gegendruckfelder
15 in der Stirnplatte 6 integriert sind. Die Gegendruckfelder
15 sind dabei ringbogenförmig ausgebildet,
können jedoch in alternativen Ausgestaltungen
auch andere an die Stirnplatte 6 angepaßte Formen aufweisen.
Die Gegendruckfelder 15 können als Nuten, Vertiefungen,
Aussparungen, Einkerbungen, Einschnitte,
Aushöhlungen oder dergleichen ausgebildet sein. Dabei
hat sich die Ausbildung als Nut als besonders geeignet
herausgestellt.As can also be seen from FIGS. 1 and 2,
are the back pressure fields 16 through the housing side
Die in Fig. 2 erkennbaren Bohrungen 17 dienen zum Fixieren
der gehäuseseitigen Stirnplatte 6 an dem Kurvenring
3. Hierzu können beispielsweise Paßstifte mit
einer Stärke von 5 mm eingesetzt werden. Selbstverständlich
ist die erfindungsgemäße Lösung nicht auf
die dargestellte Pumpenart beschränkt. Darüber hinaus
ergeben sich für den Fachmann naheliegende Lösungen,
insbesondere für einen weiteren Einsatz der Gegendruckfelder
15. Hierzu kann beispielsweise vorgesehen
sein, daß auch die deckelseitige Stirnplatte 8 bzw.
die Druckplatte mit Gegendruckfeldern 15 ergänzend
oder alternativ zu dem Einsatz von Gegendruckfeldern
15 bei der deckelseitigen Stirnplatte 8, versehen ist.
Die gehäuseseitige Stirnplatte 6 bzw. die deckelseitige
Stirnplatte 8 können selbstverständlich auch einstückig
mit dem Gehäuse 7 bzw. dem Gehäusedeckel 9
ausgebildet bzw. in diesen integriert sein. The recognizable in Fig. 2
- 11
- Antriebswelledrive shaft
- 22
- Läufersatzrunners set
- 33
- Kurvenringcam ring
- 44
- Läuferrunner
- 55
- Flügelwing
- 66
- gehäuseseitige StirnplatteHousing-side face plate
- 77
- Gehäusecasing
- 88th
- deckelseitige Stirnplattecover-side face plate
- 99
- Gehäusedeckelhousing cover
- 1010
- Druckraumpressure chamber
- 1111
- Drucknierepressure kidney
- 1212
- Zulaufbohrunginlet bore
- 1313
- Ringkammerannular chamber
- 1414
- teilringförmiger Kanalsemi-annular channel
- 1515
- GegendruckfeldBackpressure field
- 1616
- Drucknierepressure kidney
- 1717
- Bohrungdrilling
Claims (13)
- Pump, in particular vane cell pump or roller pump, having a housing in which a rotor set is arranged which is delimited at least by one end plate, the rotor set having a cam ring and a rotor with vanes, characterized in that the at least one end plate (6 or 8) is provided with at least one back-pressure field (15), the back-pressure field (15) being arranged in the region of a bearing face of the cam ring (3) and it being possible to generate a back pressure by the inflow of working medium which is acted on by the pump working pressure, which back pressure counteracts a seating process of the cam ring (3) into the end plate (6 or 8).
- Pump according to Claim 1, characterized in that the at least one back-pressure field (15) is connected to a pressure kidney (16 or 11) of the end plate (6 or 8).
- Pump according to Claim 1 or 2, characterized in that the end plate (6 or 8) has two pressure kidneys (16 or 11) with in each case one assigned back-pressure field (15).
- Pump according to Claim 1, 2 or 3, characterized in that the back-pressure field (15) is configured in such a way that a seating process of the cam ring (3) into the end plate (6 or 8) is largely precluded.
- Pump according to one of Claims 1 to 4, characterized in that the back-pressure field (15) is configured in such a way that the cam ring (3) floats on the back-pressure field (15).
- Pump according to one of Claims 1 to 5, characterized in that the back-pressure field (15) is delimited by the end plate (6 or 8) and the cam ring (3) .
- Pump according to one of Claims 1 to 6, characterized in that the back-pressure field (15) is integrated into the end plate (6 or 8).
- Pump according to one of Claims 1 to 7, characterized in that the back-pressure field (15) is of arcuate configuration.
- Pump according to one of Claims 1 to 8, characterized in that the rotor set (2) is delimited by two end plates (6, 8), one end plate (8) adjoining a pressure space (10) and only the other end plate (6) being provided with the at least one back-pressure field (15).
- Pump according to one of Claims 2 to 9, characterized in that the at least one pressure kidney (16) of the end plate (6) which is provided with the back-pressure field (15) is configured as a blind hole or is delimited on that end side which faces away from the rotor set (2) by the adjoining housing (7) or a housing cover (9).
- Pump according to Claim 9 or 10, characterized in that the end plate which adjoins the pressure space (10) is configured as an end plate (8) on the cover side, and the end plate which is provided with the back-pressure field (15) is configured as an end plate (6) on the housing side.
- Pump according to one of Claims 1 to 11, characterized in that at least one end plate (6 or 8) is configured integrally with the housing cover (9) and/or the housing (7).
- Pump according to one of Claims 1 to 12, characterized in that the back-pressure field (15) is configured as a groove, depression, cut-out, notch, indent, cavity or the like.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10145866A DE10145866A1 (en) | 2001-09-18 | 2001-09-18 | Pump, in particular vane pump |
| DE10145866 | 2001-09-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1293673A2 EP1293673A2 (en) | 2003-03-19 |
| EP1293673A3 EP1293673A3 (en) | 2004-07-28 |
| EP1293673B1 true EP1293673B1 (en) | 2005-11-30 |
Family
ID=7699371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02020795A Expired - Lifetime EP1293673B1 (en) | 2001-09-18 | 2002-09-17 | Vane pump |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1293673B1 (en) |
| AT (1) | ATE311537T1 (en) |
| DE (2) | DE10145866A1 (en) |
| ES (1) | ES2254580T3 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112196A1 (en) | 1991-04-13 | 1992-10-15 | Zahnradfabrik Friedrichshafen | Vane-type pump with reduced high temp. effect - comprises vaned rotor and outer ring assembly and pressure plate with elastic elements in recesses |
| JP3710227B2 (en) * | 1995-12-06 | 2005-10-26 | カヤバ工業株式会社 | Vane pump |
-
2001
- 2001-09-18 DE DE10145866A patent/DE10145866A1/en not_active Withdrawn
-
2002
- 2002-09-17 EP EP02020795A patent/EP1293673B1/en not_active Expired - Lifetime
- 2002-09-17 ES ES02020795T patent/ES2254580T3/en not_active Expired - Lifetime
- 2002-09-17 DE DE50205094T patent/DE50205094D1/en not_active Expired - Lifetime
- 2002-09-17 AT AT02020795T patent/ATE311537T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE10145866A1 (en) | 2003-04-17 |
| ES2254580T3 (en) | 2006-06-16 |
| EP1293673A3 (en) | 2004-07-28 |
| EP1293673A2 (en) | 2003-03-19 |
| DE50205094D1 (en) | 2006-01-05 |
| ATE311537T1 (en) | 2005-12-15 |
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