EP1934479A1 - Vane pump - Google Patents
Vane pumpInfo
- Publication number
- EP1934479A1 EP1934479A1 EP06793383A EP06793383A EP1934479A1 EP 1934479 A1 EP1934479 A1 EP 1934479A1 EP 06793383 A EP06793383 A EP 06793383A EP 06793383 A EP06793383 A EP 06793383A EP 1934479 A1 EP1934479 A1 EP 1934479A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- grooves
- annular groove
- rotation
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 241000124008 Mammalia Species 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000000287 oocyte Anatomy 0.000 description 1
- 235000019640 taste Nutrition 0.000 description 1
Classifications
-
- 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
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
- F01C21/0818—Vane tracking; control therefor
- F01C21/0854—Vane tracking; control therefor by fluid means
- F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid
-
- 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
- F04C2/3442—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 the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
Definitions
- the invention relates to a fl uid cell pump according to the preamble of claim 1.
- This flight cell pump has a
- Rotor has distributed over its circumference a plurality of grooves which extend at least substantially radially to the axis of rotation of the rotor and in each of which a flugelformiges Forder element is guided displaceably.
- the Pumpengehause has a surrounding the rotor, to its axis of rotation eccentric peripheral wall, against which the wings with their radially outer ends.
- the pump housing has in the direction of the axis of rotation of the rotor to these adjacent Gehausestirnwande.
- the inventive flight-wave pump with the features of claim 1 has the advantage that their production is simplified, since the introduction of at least one annular groove in the rotor is possible in a simpler manner than in the Gehausestirnwand.
- Embodiments and developments of the inventive vane pump specified allows a two-sided pressurization of the rotor, so that acts on these at least substantially no axial forces and the wear of the rotor and the Gehausestirnwande can be kept low.
- the embodiment of claim 3 allows at least approximately the avoidance of axial forces on the rotor at the same time limited extent of the annular grooves in the two end faces of the rotor.
- Particularly advantageous is the embodiment according to claim 4, by a annular groove only two successive grooves in the rotor are connected to each other, as this possible leakage losses can be kept low.
- FIG. 1 shows a plane-zonal pump in a simplified representation in a cross-section along line II in FIG. 3
- FIG. 2 shows the flight-cell pump in a cross-section along line II-II in FIG. 3 according to a first exemplary embodiment
- FIG. 3 shows the plane-cell pump in a longitudinal section along line III-III.
- III in Figure 1 and Figure 4 the vane pump in a cross section along line II-II according to a second exemplary embodiment.
- a Flugelzellenpumpe is shown, which is preferably provided for requesting fuel, in particular diesel fuel.
- the vane pump By the vane pump while fuel from a storage container is required to a high-pressure pump.
- the vane pump may be arranged separately from the high pressure pump, attached to the high pressure pump or integrated into the high pressure pump.
- the vane pump has a pump housing 10, which is designed in several parts, and a drive shaft 12, which projects into the pump housing 10.
- the pump housing 10 has two
- Gehausestirnwande 14,16 through which in the axial direction, that is, in the direction of the axis of rotation 13 of the drive shaft 12, a pump chamber is limited. In the circumferential direction, the pump chamber is bounded by a peripheral wall 18, the einstuckig with one of Gehausestirnwande 14,16 or can be formed separately from these.
- the rotor 20 has the housing end walls 14,16 facing end faces 201 and 202.
- a rotor 20 is arranged in the pump chamber, which rotor is connected in a rotationally fixed manner to the drive shaft 12, for example via a groove / spring connection 22.
- the rotor 20 has a plurality of circumferentially distributed, at least substantially radially to the axis of rotation 13 of the rotor 20 extending grooves 24.
- the grooves 24 extend, starting from the outer jacket of the rotor 20, towards the axis of rotation 13 and into the rotor 20.
- four grooves 24 are provided, wherein fewer or more than four grooves 24 may be provided.
- a disk-shaped Forderelement 26 is slidably disposed, which is hereinafter referred to as a wing and protrudes with its radially outer end portion of the groove 24.
- a radially inner interior 25 is limited in the respective groove 24.
- the inside of the peripheral wall 18 of the Pumpengehauses 10 is formed eccentrically to the rotational axis 13 of the rotor 20, for example, circular or other shape.
- a suction region is provided, in which at least one mammal opening 28 mouths.
- a suction groove 30 which is elongate in the circumferential direction of the rotor 20 and is approximately kidney-shaped curved is preferably formed in at least one housing end wall 14, 16, into which the mammal opening 28 mouths.
- the mammal opening 28 preferably opens into the suction groove 30 in its end region facing counter to the direction of rotation 21 of the rotor 20.
- the mammal opening 28 is connected to an inlet leading from the storage container.
- a pressure area is also provided, in which at least a Drucko réelle 32 mouths.
- a pressure groove 34 which is elongate in the circumferential direction of the rotor 20 and is approximately in the shape of a kidney is preferably formed in at least one housing end wall 14, 16, into which the pressure opening 32 extends.
- the Drucko réelle 32 tastes in the pressure groove 34 preferably in the direction of rotation 21 of the rotor 20 facing end region.
- the Drucko réelle 32 is connected to a leading to the high pressure pump drain.
- the mammal opening 28, the suction groove 30, the Drucko réelle 32 and the pressure groove 34 are arranged at a radial distance from the rotational axis 13 of the rotor 20 near the inside of the peripheral wall 18.
- the wings 26 abut with their radially outer ends on the inside of the peripheral wall 18 and slide on this during the rotational movement of the rotor 20 in the direction of rotation 21 along.
- the volume of the chambers 36 increases, so that they are filled with fuel.
- the pressure groove 34 and the Drucko réelle 32 is disposed in a peripheral region in which the volume of the chambers 36 is reduced during the rotational movement in the direction of rotation 21 of the rotor 20, so that from this fuel in the pressure groove 34 and from this into the Drucko réelle 32 is displaced ,
- annular groove 38 extending over the entire circumference of the rotor 20 is provided, which is connected to the inner regions 25 delimited by each wing 26 in the respective groove 24. Subsequently, the annular groove 38 is referred to as annular groove 38.
- the annular groove 38 may for example be such that their radial inner edge at least approximately at the same radial distance from the axis of rotation 13 of the rotor 20 extends as the radially inner edge of the grooves 24 in the rotor 20, wherein the annular groove 38 then approximately tangentially into the grooves 24.
- the radially inner edge of the annular groove 38 extends at a smaller radial distance from the rotational axis 13 than the radially inner edge of the grooves 24, the annular groove 38, for example, approximately radially into the grooves 24.
- the annular groove 38 can also run at a smaller radial distance from the rotational axis 13 than the radially inner edges of the grooves 24 and be connected via a respective further groove in the rotor 20 with the inner regions 25 of the grooves 24.
- the annular groove 38 can also extend at a greater radial distance from the axis of rotation 13 than the radially inner edge of the grooves 24, but should run at a smaller radial distance from the axis of rotation 13 than the radially inner ends of the wings 26.
- the annular groove 38 divided into several annular groove sections. It may be provided that in each case an annular groove 38 is provided in both end faces 201,202 of the rotor 20 or alternatively it may also be provided that only in one end face 201 or 202 of the rotor 20, an annular groove 38 is provided. From the pressure groove 34 leads in the end face 201,202 of the rotor 20, in which the annular groove 38 is arranged, facing
- a connecting groove 40 from which ends approximately at a distance of the annular groove 38 of the rotation axis 13 and through which the annular groove 38 is thus connected to the pressure groove 34 and thus the pressure range.
- the connecting groove 40 may also be provided a connecting hole.
- a sealing region 39 is formed, in which between the rotor 20 and the adjacent Gehausestirnwand 14,16 only a small axial distance is present. In the area around the drive shaft 12, there is only a small amount Pressure, so that between the annular groove 38 and the area around the drive shaft 12 is a pressure drop.
- annular groove 38 on an end face 201 or 202 of the rotor 20 does not extend over the entire circumference of the rotor 38 but only over a part of the circumference, wherein a plurality of circumferentially offset from each other annular grooves 38 are provided could be.
- a plurality of annular grooves 38 may be provided, which connect only the inner regions 25 of two successive grooves 24 of the rotor 20 with each other. This means that in the embodiment according to FIG. 2, two sections 381, 382 of the annular groove 38 are dispensed with.
- a bilateral and symmetrical arrangement of the annular grooves 38 on the rotor 20 has the advantage that act on the rotor 20 at least approximately no resulting forces in the direction of its axis of rotation 13 and no tilting moments perpendicular to the axis of rotation 13, so that the rotor 20 at least approximately centrally between the two Gehausestirnwanden 14,16 circulates without coming into contact with these. If sections of annular grooves 38 which do not extend over the entire circumference of the rotor 20 are provided in both end faces 201, 202 of the rotor 20, the leakage through the sealing region 39 can be kept small.
- the connecting groove 40 may extend, for example radially or inclined to a radial with respect to the axis of rotation 13 of the pressure groove 34 inwardly.
- the connecting groove 40 can, in particular, run in such a way that it approaches the annular groove 38 in the direction of rotation 21 of the rotor 20.
- the connecting groove 40 can extend helically curved.
- the connecting groove 40 preferably preferably at least approximately tangentially into the pressure groove 34 and / or on the other hand at least approximately tangentially in the annular groove 38.
- the Connecting groove 40 in the counter to the direction of rotation 21 of the rotor 20 facing end portion of the pressure groove 34.
- the at least one annular groove 38 is preferably introduced in the rotor 20 by primary molding and not by a machining process.
- the rotor 20 can be produced, for example, by means of a pressing or forging process, in which case the corresponding shape of the pressing or forging tool then forms the at least one annular groove 38 in the rotor 20 during production thereof.
- the rotor 20 may be made of sintered metal to ensure sufficient strength and wear resistance of the rotor 20.
- the annular groove 38 is connected to the pressure groove 34 connecting groove 40 is arranged or it can be arranged in both Gehausestirnwanden 14 and 16 respectively at least one connecting groove 40, which then preferably mirror images of each other in the Gehausestirnwanden 14 and 16 are arranged. It can also be provided that only in a housing end wall 14 or 16, the suction groove 30 and / or the pressure groove 34 is formed, wherein the other
- Gehausestirnwand 16 and 14 is formed smooth, or that in both Gehausestirnwanden 14 and 16 each have a suction groove 30 and / or pressure groove 34 is formed, which are then preferably arranged mirror images of each other in the Gehausestirnwanden 14 and 16.
- Mouth opening 28 and the Drucko réelle 32 is but only provided in a housing end wall 14 or 16, wherein in a Gehausestirnwand 14, the infant opening 28 is provided and in the other housing wall 16, the Drucko réelle 32 is provided.
- the rotor 20 and the wings 26 are loaded in the axial direction on both sides at least approximately equal, so that no or only one low resultant force on the rotor 20 and the wings 26 in the direction of the axis of rotation 13 acts.
- the depth of the at least one annular groove 38 in the rotor 20 and the connecting groove 40 in the housing end wall 14,16 amounts, for example, between 0.1 and 2mm, preferably the width of the grooves 38,40 is greater than the depth.
- FIG. 4 shows the flight-cell pump according to a second exemplary embodiment, in which the essential structure is the same as in the first exemplary embodiment.
- the two end faces 201,202 of the rotor 20 each have at least one annular groove 38 is introduced, wherein the annular grooves 38 of one end face 201 extend over a different peripheral portion of the rotor 20 than the annular grooves 38 of the other end face 202.
- the Rotor 20 four grooves 24, wherein two annular grooves 383 of the one end face 201 each extend over approximately 90 ° between each two consecutive grooves 24 and are diametrically opposite each other.
- the two annular grooves 384 of the other end face 202 also extend over approximately 90 °, but are offset from the grooves 383 of the end face 201 offset by 90 ° so that they do not overlap, and extend between each two consecutive grooves 24th
- the annular grooves 384 of the end face 202 are shown in dashed lines in Figure 4, as these on the opposite end face 202 of the rotor 20 are arranged and thus are not actually visible in Figure 4.
- the embodiment according to FIG. 4 can also be transferred to other embodiments of the rotor 20 in which it has an even number of slots 24.
- the annular grooves 38 each extend only between two successive grooves 24 and the annular grooves 38 of the two end faces 201,202 are arranged offset from one another in the circumferential direction, so that they do not overlap.
- this arrangement of the annular grooves 38 at least substantially no axial forces in the direction of the axis of rotation 13 on the rotor 20 are produced which would have pressed these against one of the housing end walls 14, 16 and thus would cause increased wear.
- the leakage can be kept low by the sealing area 39.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention relates to a vane pump (10) comprising a rotor (20) which is arranged therein, rotatably driven by a drive shaft (12) and is provided with several grooves (24) which are distributed through the circumference thereof, extend substantially radially with respect to the axis of rotation (13) of the rotor (20) and in each of which a blade-shaped conveying element (26) is slidingly guided. The end walls (14,16) of the pump housing (10) are adjacent to the rotor (20) in the direction of the axis of rotation thereof. At least one ring-shaped groove (38) surrounding the axis of rotation (13) of the rotor (20) is embodied in at least one front side (201,202) thereof and is connected to the lower areas (25) restricted by the blades (26) in the grooves (24) of the rotor (20) and to pressure areas (32, 34). In a preferred embodiment, the ring-shaped groove (38) is formed in the rotor (20) by shaping.
Description
FlugeizellenpumpeFlight oocytes pump
Stand der TechnikState of the art
Die Erfindung geht aus von einer Flugeizellenpumpe nach der Gattung des Anspruchs 1.The invention relates to a fl uid cell pump according to the preamble of claim 1.
Eine solche Flugeizellenpumpe ist durch dieSuch a flight cell pump is through
DE 199 52 167 Al bekannt. Diese Flugeizellenpumpe weist einDE 199 52 167 Al known. This flight cell pump has a
Pumpengehause auf, in dem ein Rotor angeordnet ist, der durch eine Antriebswelle rotierend angetrieben wird. DerPump housing in which a rotor is arranged, which is driven by a drive shaft rotating. Of the
Rotor weist über seinen Umfang verteilt mehrere Nuten auf, die zumindest im wesentlichen radial zur Drehachse des Rotors verlaufen und in denen jeweils ein flugelformiges Forderelement verschiebbar gefuhrt ist. Das Pumpengehause weist eine den Rotor umgebende, zu dessen Drehachse exzentrische Umfangswand auf, an der die Flügel mit ihren radial äußeren Enden anliegen. Das Pumpengehause weist in Richtung der Drehachse des Rotors an diesen angrenzende Gehausestirnwande auf. Bei der Rotation des Rotors werden infolge der exzentrischen Anordnung der Umfangswand zwischen den Flugein sich vergrößernde und verkleinernde Kammern gebildet, zwischen denen das zu fordernde Medium unter Druckerhohung von einem Saugbereich zu einem zu diesem in Umfangsrichtung versetzten Druckbereich gefordert wird. Die Flügel werden dabei infolge der Fliehkräfte bei rotierendem Rotor in Anlage an der Umfangswand gehalten, wobei jedoch insbesondere beim Anlaufen der Flugeizellenpumpe bei niedriger Drehzahl nur geringe
Fliehkräfte wirken, so dass die Flugeizellenpumpe nur wenig fordert. Bei der bekannten Flugeizellenpumpe ist vorgesehen, dass von einer anderen Forderpumpe, die mit der Flugeizellenpumpe eine gemeinsame Pumpenanordnung bildet, verdichtetes Medium in die durch die Flügel in den Nuten des Rotors begrenzten Innenbereiche zugeführt wird, wodurch die Flügel zusatzlich zur Fliehkraft radial nach außen zur Umfangswand hin gedruckt werden. Dabei ist in wenigstens einer Gehausestirnwand eine sich über einen Teil des Umfangs des Rotors erstreckende ringförmige Nut vorgesehen, der von der weiteren Forderpumpe verdichtetes Medium zugeführt wird. Die Herstellung der ringförmigen Nut in der Gehausestirnwand ist dabei aufwendig und muss üblicherweise mittels eines spanabhebenden Verfahrens, wie beispielsweise Fräsen, erfolgen.Rotor has distributed over its circumference a plurality of grooves which extend at least substantially radially to the axis of rotation of the rotor and in each of which a flugelformiges Forder element is guided displaceably. The Pumpengehause has a surrounding the rotor, to its axis of rotation eccentric peripheral wall, against which the wings with their radially outer ends. The pump housing has in the direction of the axis of rotation of the rotor to these adjacent Gehausestirnwande. During the rotation of the rotor, as a result of the eccentric arrangement of the peripheral wall between the flights, enlarging and reducing chambers are formed, between which the medium to be demanded is demanded under pressure increase from a suction region to a pressure region offset in the circumferential direction. The wings are kept as a result of the centrifugal forces with a rotating rotor in abutment with the peripheral wall, but especially at start-up of the centrifugal cell pump at low speed only small Centrifugal forces act, so that the fl uid cell pump requires little. In the known flighted-cell pump it is provided that from another Forderpumpe, which forms a common pump assembly with the Flüglichizellenpumpe, compressed medium is fed into the limited by the wings in the grooves of the rotor inner regions, whereby the wings in addition to the centrifugal force radially outward to the peripheral wall printed out. In this case, an annular groove extending over part of the circumference of the rotor is provided in at least one housing end wall, to which medium compressed by the further conveying pump is fed. The production of the annular groove in the Gehausestirnwand is expensive and usually must be done by means of a machining process, such as milling.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemaße Flugeizellenpumpe mit den Merkmalen gemäß Anspruch 1 hat demgegenüber den Vorteil, dass deren Herstellung vereinfacht ist, da die Einbringung der wenigstens einen ringförmigen Nut im Rotor auf einfachere Weise möglich ist als in der Gehausestirnwand.The inventive flight-wave pump with the features of claim 1 has the advantage that their production is simplified, since the introduction of at least one annular groove in the rotor is possible in a simpler manner than in the Gehausestirnwand.
In den abhangigen Ansprüchen sind vorteilhafteIn the dependent claims are advantageous
Ausgestaltungen und Weiterbildungen der erfindungsgemaßen Flugelzellenpumpe angegeben. Die Ausbildung gemäß Anspruch 2 ermöglicht eine beidseitige Druckbeaufschlagung des Rotors, so dass auf diesen zumindest im wesentlichen keine Axialkrafte wirkt und der Verschleiss des Rotors und der Gehausestirnwande gering gehalten werden kann. Die Ausbildung gemäß Anspruch 3 ermöglicht zumindest annähernd die Vermeidung von Axialkraften auf den Rotor bei zugleich begrenzter Erstreckung der ringförmigen Nuten in den beiden Stirnseiten des Rotors. Besonders vorteilhaft ist die Ausgestaltung gemäß Anspruch 4, indem durch eine
ringförmige Nut nur jeweils zwei aufeinanderfolgende Nuten im Rotor miteinander verbunden werden, da hierbei mögliche Leckageverluste gering gehalten werden können.Embodiments and developments of the inventive vane pump specified. The embodiment according to claim 2 allows a two-sided pressurization of the rotor, so that acts on these at least substantially no axial forces and the wear of the rotor and the Gehausestirnwande can be kept low. The embodiment of claim 3 allows at least approximately the avoidance of axial forces on the rotor at the same time limited extent of the annular grooves in the two end faces of the rotor. Particularly advantageous is the embodiment according to claim 4, by a annular groove only two successive grooves in the rotor are connected to each other, as this possible leakage losses can be kept low.
Zeichnungdrawing
Zwei Ausfuhrungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung naher erläutert. Es zeigen Figur 1 eine Flugeizellenpumpe in vereinfachter Darstellung in einem Querschnitt entlang Linie I-I in Figur 3, Figur 2 die Flugeizellenpumpe in einem Querschnitt entlang Linie II-II in Figur 3 gemäß einem ersten Ausfuhrungsbeispiel, Figur 3 die Flugeizellenpumpe in einem Längsschnitt entlang Linie III- III in Figur 1 und Figur 4 die Flugelzellenpumpe in einem Querschnitt entlang Linie II-II gemäß einem zweiten Ausfuhrungsbeispiel .Two exemplary embodiments of the invention are illustrated in the drawing and explained in more detail in the following description. FIG. 1 shows a plane-zonal pump in a simplified representation in a cross-section along line II in FIG. 3, FIG. 2 shows the flight-cell pump in a cross-section along line II-II in FIG. 3 according to a first exemplary embodiment, FIG. 3 shows the plane-cell pump in a longitudinal section along line III-III. III in Figure 1 and Figure 4, the vane pump in a cross section along line II-II according to a second exemplary embodiment.
Beschreibung der AusfuhrungsbeispieleDescription of the exemplary embodiments
In den Figuren 1 bis 4 ist eine Flugelzellenpumpe dargestellt, die vorzugsweise zum Fordern von Kraftstoff, insbesondere Dieselkraftstoff, vorgesehen ist. Durch die Flugelzellenpumpe wird dabei Kraftstoff aus einem Vorratsbehalter zu einer Hochdruckpumpe gefordert. Die Flugelzellenpumpe kann getrennt von der Hochdruckpumpe angeordnet sein, an die Hochdruckpumpe angebaut oder in die Hochdruckpumpe integriert sein. Die Flugelzellenpumpe weist ein Pumpengehause 10 auf, das mehrteilig ausgebildet ist, und eine Antriebswelle 12, die in das Pumpengehause 10 hineinragt. Das Pumpengehause 10 weist zweiIn Figures 1 to 4 a Flugelzellenpumpe is shown, which is preferably provided for requesting fuel, in particular diesel fuel. By the vane pump while fuel from a storage container is required to a high-pressure pump. The vane pump may be arranged separately from the high pressure pump, attached to the high pressure pump or integrated into the high pressure pump. The vane pump has a pump housing 10, which is designed in several parts, and a drive shaft 12, which projects into the pump housing 10. The pump housing 10 has two
Gehausestirnwande 14,16 auf, durch die in axialer Richtung, das heißt in Richtung der Drehachse 13 der Antriebswelle 12, eine Pumpenkammer begrenzt wird. In Umfangsrichtung wird die Pumpenkammer durch eine Umfangswand 18 begrenzt, die einstuckig mit einer der Gehausestirnwande 14,16 oder
getrennt von diesen ausgebildet sein kann. Der Rotor 20 weist den Gehausestirnwanden 14,16 zugewandte Stirnseiten 201 und 202 auf.Gehausestirnwande 14,16 through which in the axial direction, that is, in the direction of the axis of rotation 13 of the drive shaft 12, a pump chamber is limited. In the circumferential direction, the pump chamber is bounded by a peripheral wall 18, the einstuckig with one of Gehausestirnwande 14,16 or can be formed separately from these. The rotor 20 has the housing end walls 14,16 facing end faces 201 and 202.
In der Pumpenkammer ist wie in den Figuren 1, 3 und 4 dargestellt ein Rotor 20 angeordnet, der mit der Antriebswelle 12 drehfest verbunden ist, beispielsweise über eine Nut/Federverbindung 22. Der Rotor 20 weist mehrere über seinen Umfang verteilt angeordnete, zumindest im wesentlichen radial zur Drehachse 13 des Rotors 20 verlaufende Nuten 24 auf. Die Nuten 24 erstrecken sich ausgehend vom Außenmantel des Rotors 20 zur Drehachse 13 hin in den Rotor 20 hinein. Es sind beispielsweise vier Nuten 24 vorgesehen, wobei auch weniger oder mehr als vier Nuten 24 vorgesehen sein können. In jeder Nut 24 ist ein scheibenförmiges Forderelement 26 verschiebbar angeordnet, das nachfolgend als Flügel bezeichnet wird und das mit seinem radial äußeren Endbereich aus der Nut 24 herausragt. Durch jeden Flügel 26 wird in der jeweiligen Nut 24 ein radial innenliegender Innenbereich 25 begrenzt.As shown in FIGS. 1, 3 and 4, a rotor 20 is arranged in the pump chamber, which rotor is connected in a rotationally fixed manner to the drive shaft 12, for example via a groove / spring connection 22. The rotor 20 has a plurality of circumferentially distributed, at least substantially radially to the axis of rotation 13 of the rotor 20 extending grooves 24. The grooves 24 extend, starting from the outer jacket of the rotor 20, towards the axis of rotation 13 and into the rotor 20. For example, four grooves 24 are provided, wherein fewer or more than four grooves 24 may be provided. In each groove 24, a disk-shaped Forderelement 26 is slidably disposed, which is hereinafter referred to as a wing and protrudes with its radially outer end portion of the groove 24. Through each wing 26, a radially inner interior 25 is limited in the respective groove 24.
Die Innenseite der Umfangswand 18 des Pumpengehauses 10 ist exzentrisch zur Drehachse 13 des Rotors 20 ausgebildet, beispielsweise kreisförmig oder mit anderer Form. In wenigstens einer Gehausestirnwand 14,16 ist wie in Figur 2 dargestellt ein Saugbereich vorgesehen, in dem wenigstens eine Säugöffnung 28 mundet. Im Saugbereich ist vorzugsweise in wenigstens einer Gehausestirnwand 14,16 eine in Umfangsrichtung des Rotors 20 langgestreckte, etwa nierenformig gekrümmte Saugnut 30 ausgebildet, in die die Säugöffnung 28 mundet. Die Säugöffnung 28 mundet in die Saugnut 30 vorzugsweise in deren entgegen der Drehrichtung 21 des Rotors 20 weisenden Endbereich. Die Säugöffnung 28 ist mit einem vom Vorratsbehalter herfuhrenden Zulauf verbunden. In wenigstens einer Gehausestirnwand 14,16 ist außerdem ein Druckbereich vorgesehen, in dem wenigstens
eine Druckoffnung 32 mundet. Im Druckbereich ist vorzugsweise in wenigstens einer Gehausestirnwand 14,16 eine in Umfangsrichtung des Rotors 20 langgestreckte, etwa nierenformig gekrümmte Drucknut 34 ausgebildet, in die die Druckoffnung 32 mundet. Die Druckoffnung 32 mundet in die Drucknut 34 vorzugsweise in deren in Drehrichtung 21 des Rotors 20 weisenden Endbereich. Die Druckoffnung 32 ist mit einem zur Hochdruckpumpe fuhrenden Ablauf verbunden. Die Säugöffnung 28, die Saugnut 30, die Druckoffnung 32 und die Drucknut 34 sind mit radialem Abstand von der Drehachse 13 des Rotors 20 nahe der Innenseite der Umfangswand 18 angeordnet. Die Flügel 26 liegen mit ihren radial äußeren Enden an der Innenseite der Umfangswand 18 an und gleiten an dieser bei der Drehbewegung des Rotors 20 in Drehrichtung 21 entlang. Infolge der exzentrischenThe inside of the peripheral wall 18 of the Pumpengehauses 10 is formed eccentrically to the rotational axis 13 of the rotor 20, for example, circular or other shape. In at least one housing end wall 14, 16, as shown in FIG. 2, a suction region is provided, in which at least one mammal opening 28 mouths. In the suction region, a suction groove 30 which is elongate in the circumferential direction of the rotor 20 and is approximately kidney-shaped curved is preferably formed in at least one housing end wall 14, 16, into which the mammal opening 28 mouths. The mammal opening 28 preferably opens into the suction groove 30 in its end region facing counter to the direction of rotation 21 of the rotor 20. The mammal opening 28 is connected to an inlet leading from the storage container. In at least one housing end wall 14,16 a pressure area is also provided, in which at least a Druckoffnung 32 mouths. In the pressure region, a pressure groove 34 which is elongate in the circumferential direction of the rotor 20 and is approximately in the shape of a kidney is preferably formed in at least one housing end wall 14, 16, into which the pressure opening 32 extends. The Druckoffnung 32 tastes in the pressure groove 34 preferably in the direction of rotation 21 of the rotor 20 facing end region. The Druckoffnung 32 is connected to a leading to the high pressure pump drain. The mammal opening 28, the suction groove 30, the Druckoffnung 32 and the pressure groove 34 are arranged at a radial distance from the rotational axis 13 of the rotor 20 near the inside of the peripheral wall 18. The wings 26 abut with their radially outer ends on the inside of the peripheral wall 18 and slide on this during the rotational movement of the rotor 20 in the direction of rotation 21 along. As a result of the eccentric
Ausbildung der Innenseite der Umfangswand 18 bezuglich der Drehachse 13 des Rotors 20 ergeben sich zwischen den Flugein 26 Kammern 36 mit veränderlichem Volumen. Die Saugnut 30 und die Säugöffnung ist in einem Umfangsbereich angeordnet, in dem sich bei der Drehbewegung inTraining the inside of the peripheral wall 18 with respect to the axis of rotation 13 of the rotor 20 arise between the flight 26 chambers 36 of variable volume. The suction groove 30 and the mammal opening is arranged in a peripheral region in which in the rotational movement in
Drehrichtung 21 des Rotors 20 das Volumen der Kammern 36 vergrößert, so dass diese mit Kraftstoff befullt werden. Die Drucknut 34 und die Druckoffnung 32 ist in einem Umfangsbereich angeordnet, in dem sich bei der Drehbewegung in Drehrichtung 21 des Rotors 20 das Volumen der Kammern 36 verringert, so dass aus diesen Kraftstoff in die Drucknut 34 und von dieser in die Druckoffnung 32 verdrangt wird.Direction of rotation 21 of the rotor 20, the volume of the chambers 36 increases, so that they are filled with fuel. The pressure groove 34 and the Druckoffnung 32 is disposed in a peripheral region in which the volume of the chambers 36 is reduced during the rotational movement in the direction of rotation 21 of the rotor 20, so that from this fuel in the pressure groove 34 and from this into the Druckoffnung 32 is displaced ,
In wenigstens einer Stirnwand 201,202 des Rotors 20 ist bei einem in Figur 2 dargestellten ersten Ausfuhrungsbeispiel eine sich über den gesamten Umfang des Rotors 20 erstreckende ringförmige Nut 38 vorgesehen, die mit den durch jeden Flügel 26 in der jeweiligen Nut 24 begrenzten Innenbereichen 25 verbunden ist. Nachfolgend wird die ringförmige Nut 38 als Ringnut 38 bezeichnet. Die Ringnut 38 kann beispielsweise derart verlaufen, dass deren radial
innerer Rand zumindest annähernd im selben radialen Abstand von der Drehachse 13 des Rotors 20 verlauft wie die radial inneren Rander der Nuten 24 im Rotor 20, wobei die Ringnut 38 dann etwa tangential in die Nuten 24 mundet. Es kann auch vorgesehen sein, dass der radial innere Rand der Ringnut 38 mit geringerem radialem Abstand von der Drehachse 13 verlauft als die radial inneren Rander der Nuten 24, wobei die Ringnut 38 beispielsweise etwa radial in die Nuten 24 mundet. Die Ringnut 38 kann auch mit geringerem radialem Abstand von der Drehachse 13 verlaufen als die radial inneren Rander der Nuten 24 und über jeweils eine weitere Nut im Rotor 20 mit den Innenbereichen 25 der Nuten 24 verbunden sein. Die Ringnut 38 kann auch mit größerem radialem Abstand von der Drehachse 13 verlaufen als die radial inneren Rander der Nuten 24, sollte jedoch mit geringerem radialem Abstand von der Drehachse 13 verlaufen als die radial inneren Enden der Flügel 26. Durch die Nuten 24 wird die Ringnut 38 in mehrere Ringnutabschnitte unterteilt. Es kann vorgesehen sein, dass in beiden Stirnseiten 201,202 des Rotors 20 jeweils eine Ringnut 38 vorgesehen ist oder alternativ kann auch vorgesehen sein, dass nur in einer Stirnseite 201 oder 202 des Rotors 20 eine Ringnut 38 vorgesehen ist. Von der Drucknut 34 fuhrt in der der Stirnseite 201,202 des Rotors 20, in der die Ringnut 38 angeordnet ist, zugewandtenIn at least one end wall 201,202 of the rotor 20, in a first exemplary embodiment shown in FIG. 2, an annular groove 38 extending over the entire circumference of the rotor 20 is provided, which is connected to the inner regions 25 delimited by each wing 26 in the respective groove 24. Subsequently, the annular groove 38 is referred to as annular groove 38. The annular groove 38 may for example be such that their radial inner edge at least approximately at the same radial distance from the axis of rotation 13 of the rotor 20 extends as the radially inner edge of the grooves 24 in the rotor 20, wherein the annular groove 38 then approximately tangentially into the grooves 24. It can also be provided that the radially inner edge of the annular groove 38 extends at a smaller radial distance from the rotational axis 13 than the radially inner edge of the grooves 24, the annular groove 38, for example, approximately radially into the grooves 24. The annular groove 38 can also run at a smaller radial distance from the rotational axis 13 than the radially inner edges of the grooves 24 and be connected via a respective further groove in the rotor 20 with the inner regions 25 of the grooves 24. The annular groove 38 can also extend at a greater radial distance from the axis of rotation 13 than the radially inner edge of the grooves 24, but should run at a smaller radial distance from the axis of rotation 13 than the radially inner ends of the wings 26. By the grooves 24, the annular groove 38 divided into several annular groove sections. It may be provided that in each case an annular groove 38 is provided in both end faces 201,202 of the rotor 20 or alternatively it may also be provided that only in one end face 201 or 202 of the rotor 20, an annular groove 38 is provided. From the pressure groove 34 leads in the end face 201,202 of the rotor 20, in which the annular groove 38 is arranged, facing
Gehausestirnwand 14,16 nach innen eine Verbindungsnut 40 ab, die etwa im Abstand der Ringnut 38 von der Drehachse 13 endet und über die die Ringnut 38 somit mit der Drucknut 34 und damit dem Druckbereich verbunden ist. Anstelle der Verbindungsnut 40 kann auch eine Verbindungsbohrung vorgesehen sein. Zwischen der Ringnut 38 und der Antriebswelle 12 ist ein Dichtbereich 39 gebildet, in dem zwischen dem Rotor 20 und der angrenzenden Gehausestirnwand 14,16 nur ein geringer axialer Abstand vorhanden ist. Im Bereich um die Antriebswelle 12 herrscht nur ein geringer
Druck, so dass zwischen der Ringnut 38 und dem Bereich um die Antriebswelle 12 ein Druckgefalle besteht.Gehausestirnwand 14,16 inside a connecting groove 40 from which ends approximately at a distance of the annular groove 38 of the rotation axis 13 and through which the annular groove 38 is thus connected to the pressure groove 34 and thus the pressure range. Instead of the connecting groove 40 may also be provided a connecting hole. Between the annular groove 38 and the drive shaft 12, a sealing region 39 is formed, in which between the rotor 20 and the adjacent Gehausestirnwand 14,16 only a small axial distance is present. In the area around the drive shaft 12, there is only a small amount Pressure, so that between the annular groove 38 and the area around the drive shaft 12 is a pressure drop.
Es kann auch vorgesehen sein, dass die ringförmige Nut 38 auf einer Stirnseite 201 bzw. 202 des Rotors 20 sich nicht über den gesamten Umfang des Rotors 38 erstreckt sondern nur über einen Teil des Umfangs, wobei auch mehrere in Umfangsrichtung zueinander versetzte ringförmige Nuten 38 vorgesehen sein können. Beispielsweise können mehrere ringförmige Nuten 38 vorgesehen sein, die jeweils nur die Innenbereiche 25 von zwei aufeinander folgenden Nuten 24 des Rotors 20 miteinander verbinden. Dies bedeutet, dass bei der Ausfuhrung gemäß Figur 2 zwei Abschnitte 381,382 der Ringnut 38 entfallen. Eine beidseitige und symmetrische Anordnung der ringförmigen Nuten 38 am Rotor 20 bietet den Vorteil, dass auf den Rotor 20 zumindest annähernd keine resultierenden Kräfte in Richtung von dessen Drehachse 13 wirken und keine Kippmomente senkrecht zur Drehachse 13, so dass der Rotor 20 zumindest annähernd mittig zwischen den beiden Gehausestirnwanden 14,16 umlauft ohne in Anlage an diesen zu kommen. Wenn in beiden Stirnseiten 201,202 des Rotors 20 jeweils Abschnitte von ringförmigen Nuten 38 vorgesehen sind, die sich nicht über den gesamten Umfang des Rotors 20 erstrecken, so kann die Leckage durch den Dichtbereich 39 gering gehalten werden.It can also be provided that the annular groove 38 on an end face 201 or 202 of the rotor 20 does not extend over the entire circumference of the rotor 38 but only over a part of the circumference, wherein a plurality of circumferentially offset from each other annular grooves 38 are provided could be. For example, a plurality of annular grooves 38 may be provided, which connect only the inner regions 25 of two successive grooves 24 of the rotor 20 with each other. This means that in the embodiment according to FIG. 2, two sections 381, 382 of the annular groove 38 are dispensed with. A bilateral and symmetrical arrangement of the annular grooves 38 on the rotor 20 has the advantage that act on the rotor 20 at least approximately no resulting forces in the direction of its axis of rotation 13 and no tilting moments perpendicular to the axis of rotation 13, so that the rotor 20 at least approximately centrally between the two Gehausestirnwanden 14,16 circulates without coming into contact with these. If sections of annular grooves 38 which do not extend over the entire circumference of the rotor 20 are provided in both end faces 201, 202 of the rotor 20, the leakage through the sealing region 39 can be kept small.
Die Verbindungsnut 40 kann beispielsweise radial oder geneigt zu einer Radialen bezuglich der Drehachse 13 von der Drucknut 34 nach innen verlaufen. Die Verbindungsnut 40 kann insbesondere derart verlaufen, dass diese sich in Drehrichtung 21 des Rotors 20 der Ringnut 38 annähert. Weiterhin kann die Verbindungsnut 40 schneckenförmig gekrümmt verlaufen. Die Verbindungsnut 40 mundet vorzugsweise einerseits zumindest annähernd tangential in die Drucknut 34 und/oder andererseits zumindest annähernd tangential in die Ringnut 38. Vorzugsweise mundet die
Verbindungsnut 40 in den entgegen der Drehrichtung 21 des Rotors 20 weisenden Endbereich der Drucknut 34. Durch die Verbindung der Ringnut 38 mit der Drucknut 34 herrscht in der Ringnut 38 und damit in den mit dieser in Verbindung stehenden Innenbereichen 25 der Nuten 24 des Rotors 20 ein erhöhter Druck, durch den die Anlagekraft der Flügel 26 an der Innenseite der Umfangswand 18 verstärkt wird, wodurch die Forderleistung der Flugelzellenpumpe verbessert wird.The connecting groove 40 may extend, for example radially or inclined to a radial with respect to the axis of rotation 13 of the pressure groove 34 inwardly. The connecting groove 40 can, in particular, run in such a way that it approaches the annular groove 38 in the direction of rotation 21 of the rotor 20. Furthermore, the connecting groove 40 can extend helically curved. The connecting groove 40 preferably preferably at least approximately tangentially into the pressure groove 34 and / or on the other hand at least approximately tangentially in the annular groove 38. Preferably, the Connecting groove 40 in the counter to the direction of rotation 21 of the rotor 20 facing end portion of the pressure groove 34. By the connection of the annular groove 38 with the pressure groove 34 prevails in the annular groove 38 and thus in the associated with this interior areas 25 of the grooves 24 of the rotor 20 a increased pressure, by which the contact force of the wings 26 is reinforced on the inside of the peripheral wall 18, whereby the Forderleistung the Flugelzellenpumpe is improved.
Die wenigstens eine ringförmige Nut 38 wird im Rotor 20 vorzugsweise mittels Urformen und nicht durch ein spanabhebendes Verfahren eingebracht. Der Rotor 20 kann beispielsweise mittels eines Press- oder Schmiedeprozesses hergestellt werden, wobei dann durch entsprechende Form des Press- oder Schmiedewerkzeugs die wenigstens eine ringförmige Nut 38 bei der Herstellung des Rotors 20 in diesem geformt wird. Der Rotor 20 kann insbesondere aus Sintermetall bestehen, um eine ausreichende Festigkeit und Verschleissbestandigkeit des Rotors 20 sicherzustellen.The at least one annular groove 38 is preferably introduced in the rotor 20 by primary molding and not by a machining process. The rotor 20 can be produced, for example, by means of a pressing or forging process, in which case the corresponding shape of the pressing or forging tool then forms the at least one annular groove 38 in the rotor 20 during production thereof. In particular, the rotor 20 may be made of sintered metal to ensure sufficient strength and wear resistance of the rotor 20.
Es kann vorgesehen sein, dass nur in einer Gehausestirnwand 14 oder 16 die die ringförmige Nut 38 mit der Drucknut 34 verbindende Verbindungsnut 40 angeordnet ist oder es kann in beiden Gehausestirnwanden 14 und 16 jeweils wenigstens eine Verbindungsnut 40 angeordnet sein, die dann vorzugsweise spiegelbildlich zueinander in den Gehausestirnwanden 14 und 16 angeordnet sind. Es kann außerdem vorgesehen sein, dass nur in einer Gehausestirnwand 14 oder 16 die Saugnut 30 und/oder die Drucknut 34 ausgebildet ist, wobei die andereIt can be provided that only in a Gehausestirnwand 14 or 16, the annular groove 38 is connected to the pressure groove 34 connecting groove 40 is arranged or it can be arranged in both Gehausestirnwanden 14 and 16 respectively at least one connecting groove 40, which then preferably mirror images of each other in the Gehausestirnwanden 14 and 16 are arranged. It can also be provided that only in a housing end wall 14 or 16, the suction groove 30 and / or the pressure groove 34 is formed, wherein the other
Gehausestirnwand 16 bzw. 14 glatt ausgebildet ist, oder dass in beiden Gehausestirnwanden 14 und 16 jeweils eine Saugnut 30 und/oder Drucknut 34 ausgebildet ist, die dann vorzugsweise spiegelbildlich zueinander in den Gehausestirnwanden 14 und 16 angeordnet sind. DieGehausestirnwand 16 and 14 is formed smooth, or that in both Gehausestirnwanden 14 and 16 each have a suction groove 30 and / or pressure groove 34 is formed, which are then preferably arranged mirror images of each other in the Gehausestirnwanden 14 and 16. The
Säugöffnung 28 und die Druckoffnung 32 ist dabei jedoch nur
in einer Gehausestirnwand 14 oder 16 vorgesehen, wobei in einer Gehausestirnwand 14 die Säugöffnung 28 vorgesehen ist und in der anderen Gehausewand 16 die Druckoffnung 32 vorgesehen ist. Bei der spiegelbildlichen Anordnung der Saugnuten 30 und Drucknuten 34 sowie der Ringnuten 38 und Verbindungsnuten 40 in beiden Gehausestirnwanden 14 und 16 wird erreicht, dass der Rotor 20 und die Flügel 26 in axialer Richtung beidseitig zumindest annähernd gleich belastet sind, so dass keine oder nur eine geringe resultierende Kraft auf den Rotor 20 und die Flügel 26 in Richtung der Drehachse 13 wirkt. Die Tiefe der wenigstens einen ringförmigen Nut 38 im Rotor 20 und der Verbindungsnut 40 in der Gehausestirnwand 14,16 betragt beispielsweise zwischen 0,1 und 2mm, wobei vorzugsweise die Breite der Nuten 38,40 großer ist als deren Tiefe.Mouth opening 28 and the Druckoffnung 32 is but only provided in a housing end wall 14 or 16, wherein in a Gehausestirnwand 14, the infant opening 28 is provided and in the other housing wall 16, the Druckoffnung 32 is provided. In the mirror-image arrangement of the suction grooves 30 and pressure grooves 34 and the annular grooves 38 and connecting grooves 40 in both Gehausestirnwanden 14 and 16 is achieved that the rotor 20 and the wings 26 are loaded in the axial direction on both sides at least approximately equal, so that no or only one low resultant force on the rotor 20 and the wings 26 in the direction of the axis of rotation 13 acts. The depth of the at least one annular groove 38 in the rotor 20 and the connecting groove 40 in the housing end wall 14,16 amounts, for example, between 0.1 and 2mm, preferably the width of the grooves 38,40 is greater than the depth.
In Figur 4 ist die Flugeizellenpumpe gemäß einem zweiten Ausfuhrungsbeispiel dargestellt, bei dem der wesentliche Aufbau gleich ist wie beim ersten Ausfuhrungsbeispiel. In den beiden Stirnseiten 201,202 des Rotors 20 ist jeweils wenigstens eine ringförmige Nut 38 eingebracht, wobei sich die ringförmigen Nuten 38 der einen Stirnseite 201 über einen anderen Umfangsbereich des Rotors 20 erstrecken als die ringförmigen Nuten 38 der anderen Stirnseite 202. Beim dargestellten Ausfuhrungsbeispiel weist der Rotor 20 vier Nuten 24 auf, wobei sich zwei ringförmige Nuten 383 der einen Stirnseite 201 jeweils über etwa 90° zwischen jeweils zwei aufeinander folgenden Nuten 24 erstrecken und einander diametral gegenüberliegen. Die zwei ringförmigen Nuten 384 der anderen Stirnseite 202 erstrecken sich ebenfalls über etwa 90°, sind jedoch gegenüber den Nuten 383 der Stirnseite 201 um 90° versetzt angeordnet, so dass diese sich nicht überdecken, und erstrecken sich zwischen jeweils zwei aufeinander folgenden Nuten 24. Die ringförmigen Nuten 384 der Stirnseite 202 sind in Figur 4 gestrichelt dargestellt, da diese auf der gegenüberliegenden Stirnseite
202 des Rotors 20 angeordnet sind und somit in Figur 4 eigentlich nicht sichtbar sind. Die Ausbildung gemäß Figur 4 kann auch auf andere Ausfuhrungen des Rotors 20 übertragen werden, bei denen dieser eine geradzahlige Anzahl von Nuten 24 aufweist. Dabei erstrecken sich auf jeder Stirnseite 201,202 des Rotors 20 die ringförmigen Nuten 38 jeweils nur zwischen zwei aufeinander folgenden Nuten 24 und die ringförmigen Nuten 38 der beiden Stirnseiten 201,202 sind in Umfangsrichtung zueinander versetzt angeordnet, so dass diese sich nicht überdecken. Durch diese Anordnung der ringförmigen Nuten 38 ergeben sich zumindest im wesentlichen keine axialen Kräfte in Richtung der Drehachse 13 auf den Rotor 20, die diesen gegen eine der Gehausestirnwande 14,16 drucken wurden und damit einen erhöhten Verschleiss verursachen wurden.FIG. 4 shows the flight-cell pump according to a second exemplary embodiment, in which the essential structure is the same as in the first exemplary embodiment. In the two end faces 201,202 of the rotor 20 each have at least one annular groove 38 is introduced, wherein the annular grooves 38 of one end face 201 extend over a different peripheral portion of the rotor 20 than the annular grooves 38 of the other end face 202. In the illustrated embodiment, the Rotor 20 four grooves 24, wherein two annular grooves 383 of the one end face 201 each extend over approximately 90 ° between each two consecutive grooves 24 and are diametrically opposite each other. The two annular grooves 384 of the other end face 202 also extend over approximately 90 °, but are offset from the grooves 383 of the end face 201 offset by 90 ° so that they do not overlap, and extend between each two consecutive grooves 24th The annular grooves 384 of the end face 202 are shown in dashed lines in Figure 4, as these on the opposite end face 202 of the rotor 20 are arranged and thus are not actually visible in Figure 4. The embodiment according to FIG. 4 can also be transferred to other embodiments of the rotor 20 in which it has an even number of slots 24. Here, on each end face 201,202 of the rotor 20, the annular grooves 38 each extend only between two successive grooves 24 and the annular grooves 38 of the two end faces 201,202 are arranged offset from one another in the circumferential direction, so that they do not overlap. As a result of this arrangement of the annular grooves 38, at least substantially no axial forces in the direction of the axis of rotation 13 on the rotor 20 are produced which would have pressed these against one of the housing end walls 14, 16 and thus would cause increased wear.
Außerdem kann die Leckage durch den Dichtbereich 39 gering gehalten werden.
In addition, the leakage can be kept low by the sealing area 39.
Claims
1. Flugeizellenpumpe mit einem Pumpengehause (10) , in dem ein Rotor (20) angeordnet ist, der durch eine Antriebswelle (12) rotierend angetrieben wird, wobei der Rotor (20) über seinen Umfang verteilt mehrere Nuten (24) aufweist, die zumindest im wesentlichen radial zur Drehachse (13) des Rotors (20) verlaufen und in denen jeweils ein flugelformiges Forderelement (26) verschiebbar gefuhrt ist, wobei die Forderelemente (26) in den Nuten (24) des Rotors (20) radial innen liegende Innenbereiche (25) begrenzen, mit einer den Rotor (20) umgebenden, zu dessen Drehachse (13) exzentrisch verlaufenden Umfangswand (18) des1. Flüglichizellenpumpe with a pump housing (10) in which a rotor (20) is arranged, which is driven in rotation by a drive shaft (12), wherein the rotor (20) distributed over its circumference a plurality of grooves (24), at least extend substantially radially to the axis of rotation (13) of the rotor (20) and in each of which a flugelformiges Forderelement (26) is guided displaceably, wherein the Forderelemente (26) in the grooves (24) of the rotor (20) radially inner inner regions ( 25), with a peripheral wall (18) surrounding the rotor (20), with its axis of rotation (13) running eccentrically
Pumpengehauses (10), an der die Forderelemente (26) mit ihren radial äußeren Enden anliegen, mit an den Rotor (20) in Richtung von dessen Drehachse (13) angrenzenden Gehausestirnwanden (14,16) des Pumpengehauses (10), wobei durch die Forderelemente (26) bei der Drehbewegung desPumpengehauses (10) on which the Forderelemente (26) abut with their radially outer ends, with the rotor (20) in the direction of its axis of rotation (13) adjacent Gehausestirnwanden (14,16) of Pumpengehauses (10), wherein through the Forderelemente (26) during the rotational movement of
Rotors (20) Medium von einem Saugbereich (28,30) zu einem zu diesem in Drehrichtung (21) des Rotors (20) versetzten Druckbereich (32,34) gefordert wird, wobei wenigstens eine sich zumindest über einen Teil des Umfangs des Rotors (20) erstreckende ringförmige Nut (38 ; 381 , 382 ; 383, 384 ) vorgesehen ist, die mit dem Innenbereich (25) wenigstens zwei der Nuten (24) des Rotors (20) verbunden ist, dadurch gekennzeichnet, dass die wenigstens eine ringförmige Nut (38 ; 381 , 382 ; 383, 384 ) in wenigstens einer einer der Gehausestirnwande (14,16) gegenüberliegenden Stirnseite (201,202) des Rotors (20) ausgebildet ist und dass die wenigstens eine ringförmige Nut (38 ; 381 , 382 ; 383, 384 ) mit dem Druckbereich (32,34) verbunden ist.Rotor (20) medium from a suction region (28,30) is required to this in the rotational direction (21) of the rotor (20) offset pressure range (32,34), wherein at least one at least over a part of the circumference of the rotor ( 20) extending annular groove (38, 381, 382, 383, 384) is provided, which is connected to the inner region (25) at least two of the grooves (24) of the rotor (20), characterized in that the at least one annular groove (38, 381, 382, 383, 384) in at least one of the Gehausestirnwande (14,16) opposite end face (201,202) of the rotor (20) is formed and that the at least one annular groove (38; 381, 382; 383, 384) is connected to the pressure region (32, 34).
2. Flugeizellenpumpe nach Anspruch 1, dadurch gekennzeichnet, dass in beiden Stirnseiten (201,202) des Rotors (20) jeweils wenigstens eine ringförmige Nut (38 ; 381 , 382 ; 383, 384 ) vorgesehen ist, wobei wenigstens eine der ringförmigen Nuten (38 ; 381 , 382 ; 383, 384 ) mit dem Druckbereich (32,34) verbunden ist.2. Fluctic cell pump according to claim 1, characterized in that in each case at least one annular groove (38, 381, 382, 383, 384) is provided in both end faces (201, 202) of the rotor (20), at least one of the annular grooves (38; 381, 382, 383, 384) is connected to the printing area (32, 34).
3. Flugeizellenpumpe nach Anspruch 2, dadurch gekennzeichnet, dass sich die wenigstens eine ringförmige Nut (383) in einer Stirnseite (201) des Rotors (20) über einen anderen Umfangsbereich des Rotors (20) erstreckt als die wenigstens eine ringförmige Nut (384) in der anderen Stirnseite (202) des Rotors (20) .3. The motion-cell pump according to claim 2, characterized in that the at least one annular groove (383) in one end face (201) of the rotor (20) extends over a different circumferential region of the rotor (20) than the at least one annular groove (384). in the other end face (202) of the rotor (20).
4. Flugeizellenpumpe nach Anspruch 3, dadurch gekennzeichnet, dass eine geradzahlige Anzahl von Nuten (24) im Rotor (20) vorgesehen ist und dass durch die in unterschiedlichen Stirnseiten (201,202) des Rotors (20) angeordneten ringförmigen Nuten (383,384) jeweils nur die Innenbereiche (25) zweier aufeinander folgender Nuten (24) miteinander verbunden sind.4. Flüglichizellenpumpe according to claim 3, characterized in that an even number of grooves (24) in the rotor (20) is provided and that by the in different end faces (201,202) of the rotor (20) arranged annular grooves (383,384) each only the Inner regions (25) of two successive grooves (24) are interconnected.
5. Flugeizellenpumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die wenigstens eine ringförmige Nut (38 ; 381 , 382 ; 383, 384 ) im Rotor (20) durch Urformen eingebracht ist.5. Fluctic cell pump according to one of the preceding claims, characterized in that the at least one annular groove (38, 381, 382, 383, 384) in the rotor (20) is introduced by prototyping.
6. Flugeizellenpumpe nach Anspruch 5, dadurch gekennzeichnet, dass der Rotor (20) durch einen Press-, Schmiede- oder Sinterprozess hergestellt ist und insbesondere aus einem Sintermetall besteht. 6. fl uidic cell pump according to claim 5, characterized in that the rotor (20) is produced by a pressing, forging or sintering process and in particular consists of a sintered metal.
7. Flugeizellenpumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die wenigstens eine ringförmige Nut (38 ; 381 , 382 ; 383, 384 ) des Rotors (20) über wenigstens eine in einer der Gehausestirnwande (14,16) ausgebildete Verbindungsnut (40) oder Verbindungsbohrung mit dem Druckbereich (32,34) verbunden ist. 7. The fl uidic cell pump according to claim 1, Wherein the at least one annular groove (38, 381, 382, 383, 384) of the rotor (20) is formed via at least one connecting groove (40) formed in one of the housing end walls (14, 16) ) or connecting bore with the pressure region (32,34) is connected.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005047175A DE102005047175A1 (en) | 2005-09-30 | 2005-09-30 | Vane pump for feeding e.g. diesel fuel, has ring shaped groove designed at front sides of rotor opposite to front wall of pump housing, where ring shaped groove is connected to pressure area and extends over part of rotor circumference |
PCT/EP2006/066201 WO2007039405A1 (en) | 2005-09-30 | 2006-09-11 | Vane pump |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1934479A1 true EP1934479A1 (en) | 2008-06-25 |
Family
ID=37461569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06793383A Withdrawn EP1934479A1 (en) | 2005-09-30 | 2006-09-11 | Vane pump |
Country Status (6)
Country | Link |
---|---|
US (1) | US7845922B2 (en) |
EP (1) | EP1934479A1 (en) |
JP (1) | JP2009510311A (en) |
CN (1) | CN101273200B (en) |
DE (1) | DE102005047175A1 (en) |
WO (1) | WO2007039405A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004060554A1 (en) | 2004-12-16 | 2006-06-22 | Robert Bosch Gmbh | Vane pump |
WO2010129970A2 (en) * | 2009-05-07 | 2010-11-11 | Cheetah Technologies (Pty) Ltd | Air motor |
GB2486007B (en) * | 2010-12-01 | 2017-05-10 | Itt Mfg Enterprises Inc | Sliding vane pump |
DE102013001246A1 (en) * | 2013-01-25 | 2014-07-31 | Gkn Sinter Metals Holding Gmbh | Method for producing a wing for a vane pump, wings for a vane pump and vane pump |
US9605673B2 (en) * | 2013-10-17 | 2017-03-28 | Tuthill Corporation | Pump with pivoted vanes |
EP3350447B1 (en) | 2015-09-14 | 2020-03-25 | Torad Engineering, LLC | Multi-vane impeller device |
JP7243528B2 (en) * | 2019-08-29 | 2023-03-22 | 株式会社デンソー | vane pump |
DE102022202358A1 (en) | 2022-03-09 | 2023-09-14 | Mahle International Gmbh | Gerotor device and pump device with gerotor device |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB186271A (en) | 1921-11-23 | 1922-09-28 | John Alexander Mair | Improvements in rotary pumps |
US2004958A (en) | 1931-08-22 | 1935-06-18 | Mitchell Bryce | Rotary pump |
US2423271A (en) | 1942-09-11 | 1947-07-01 | Frank A Talbot | Rotary motor, pump, and the like |
US2544987A (en) * | 1947-01-04 | 1951-03-13 | Vickers Inc | Power transmission |
US2653550A (en) * | 1950-10-07 | 1953-09-29 | Vickers Inc | Power transmission |
US3574493A (en) * | 1969-04-21 | 1971-04-13 | Abex Corp | Vane-type pumps |
US4455129A (en) | 1981-05-19 | 1984-06-19 | Daikin Kogyo Co., Ltd. | Multi-vane type compressor |
JPS61142381A (en) * | 1984-12-14 | 1986-06-30 | Mazda Motor Corp | Vane pump |
CN1010337B (en) * | 1985-05-16 | 1990-11-07 | 杨德贵 | Inscribed great arc unloading vane pump or motor |
JPS63167089A (en) * | 1986-12-27 | 1988-07-11 | Kayaba Ind Co Ltd | Vane pump |
JPS63280883A (en) | 1987-05-14 | 1988-11-17 | Toyota Autom Loom Works Ltd | Variable volume type vane compressor |
JPH01155096A (en) | 1987-12-10 | 1989-06-16 | Suzuki Motor Co Ltd | Vane type rotary compressor |
US5265457A (en) * | 1990-02-16 | 1993-11-30 | Sumitomo Electric Industries, Ltd. | Method of forming an oil groove on the end surface of a rotor of an aluminum alloy |
JPH0469686A (en) * | 1990-07-10 | 1992-03-04 | Ricoh Co Ltd | Electrophotographic copying device |
JPH0469686U (en) * | 1990-10-25 | 1992-06-19 | ||
US5147183A (en) | 1991-03-11 | 1992-09-15 | Ford Motor Company | Rotary vane pump having enhanced cold start priming |
DE19529806C2 (en) | 1995-08-14 | 1999-04-01 | Luk Fahrzeug Hydraulik | Vane pump |
DE19952167A1 (en) | 1998-12-24 | 2000-06-29 | Mannesmann Rexroth Ag | Pump arrangement with two hydraulic pumps |
CN2591277Y (en) * | 2002-09-05 | 2003-12-10 | 金文彪 | Non-friction blade pump |
JP2004245088A (en) * | 2003-02-12 | 2004-09-02 | Nissan Motor Co Ltd | Vane oil pump |
DE102004060554A1 (en) | 2004-12-16 | 2006-06-22 | Robert Bosch Gmbh | Vane pump |
-
2005
- 2005-09-30 DE DE102005047175A patent/DE102005047175A1/en not_active Withdrawn
-
2006
- 2006-09-11 WO PCT/EP2006/066201 patent/WO2007039405A1/en active Application Filing
- 2006-09-11 US US12/088,294 patent/US7845922B2/en not_active Expired - Fee Related
- 2006-09-11 JP JP2008532710A patent/JP2009510311A/en active Pending
- 2006-09-11 EP EP06793383A patent/EP1934479A1/en not_active Withdrawn
- 2006-09-11 CN CN2006800357421A patent/CN101273200B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007039405A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007039405A1 (en) | 2007-04-12 |
JP2009510311A (en) | 2009-03-12 |
US7845922B2 (en) | 2010-12-07 |
CN101273200A (en) | 2008-09-24 |
DE102005047175A1 (en) | 2007-04-05 |
CN101273200B (en) | 2010-06-16 |
US20080253913A1 (en) | 2008-10-16 |
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