EP2257693B1 - Pompe, en particulier pompe à palettes - Google Patents

Pompe, en particulier pompe à palettes Download PDF

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Publication number
EP2257693B1
EP2257693B1 EP09729170.2A EP09729170A EP2257693B1 EP 2257693 B1 EP2257693 B1 EP 2257693B1 EP 09729170 A EP09729170 A EP 09729170A EP 2257693 B1 EP2257693 B1 EP 2257693B1
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EP
European Patent Office
Prior art keywords
vane
pump
region
under
pressure
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.)
Active
Application number
EP09729170.2A
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German (de)
English (en)
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EP2257693A1 (fr
Inventor
Matthias Wendt
Thomas Dippel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magna Powertrain Bad Homburg GmbH
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Magna Powertrain Bad Homburg GmbH
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Publication of EP2257693A1 publication Critical patent/EP2257693A1/fr
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Classifications

    • 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
    • F04C2/3446—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 more than one line or surface
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • 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 pump, in particular a vane pump, with a rotor having radially extending vane slots, which serve to guide wings, which are extendable radially outward from the vane slots in the direction of a stroke contour to suction in at least one suction area and in at least one pressure area communicating with a pressure outlet to effect pressurization of a working medium and having a plurality of underfloor supply areas.
  • the wings protrude radially inward into the underfloor supply regions in which the working fluid is pressurized to cause the wings to extend or to hold the vanes in the extended state.
  • the object of the invention is the run-up behavior of a pump, particularly a vane pump, having a rotor, the radially extending vane slots, which serve for guiding wings are extendable in the direction of a raising contour of the vane slots radially outwardly to one of at least Suction area suction and in at least one pressure area, which is in communication with a pressure outlet, to effect a pressurization of a working medium, and to improve with several under wing supply areas.
  • the object is in a pump, in particular a vane pump, with a rotor having radially extending vane slots, which serve to guide wings, which are extendable radially outward from the vane slots in the direction of a stroke contour in order to operate the pump when the rotor rotates to prime in at least one suction region and to effect pressurization of a working medium in at least one pressure region associated with a pressure exit, and having a plurality of underfill supply regions, characterized in that a take-off underrun supply region having a take-off downlift discharge section has a closed volume, as long as the wing or wings in the take-off down-take-out section are not yet extended.
  • the suction region and the pressure region are part of a delivery chamber, which in the radial direction between the rotor and the stroke contour and in the axial direction between two delivery chamber boundary surfaces is trained.
  • Completed volume in the context of the take-off underwing area, means, in particular, that the underflush supply area does not communicate with the pressure outlet of the pump, as in conventional pumps, because that area is closed by the retracted wing.
  • the enclosed volume of the take-off underwing area prevents working fluid from escaping from the take-off underwing area when the pump is started.
  • the pump is characterized in that the starting underfloor exhaust section is connectable via a valve passage to a connection underfloor supply region communicating with the pressure outlet.
  • the valve channel is released in dependence on the extended state of the arranged in the region of the valve channel wings. In the retracted state of the wings, the connection between the valve channel and the connection underfloor supply region or the Startunterhofflausfahrabites is interrupted.
  • the pump is characterized in that the valve channel is spaced in the radial direction of the Startunterflaugausfahrabites.
  • the distance is preferably selected so that the connection between the Startunterhofflausfahrabites and the valve channel via a vane slot is fully released only when the wing is near the stroke contour.
  • the wing head is the radially outer end of a wing.
  • a preferred embodiment of the pump is characterized in that the Startuntererielausfahrab mustard the Startuntererielskis Colours in the installed state of the pump, based on the Erdhekraft, in an upper half of the pump or the Hubkontur is arranged.
  • the upper half of the pump in particular in a separation region between the suction and the pressure region, it can happen that the blades fall or retract when the pump is at a standstill due to the earth's gravity.
  • a further preferred embodiment of the pump is characterized in that the take-off lower-flighted-out portion of the take-off underrun supply region extends into a separation region arranged circumferentially between the suction region and the pressure region.
  • the separation region can be arranged in a small circle or in a great circle of the stroke contour.
  • a further preferred embodiment of the pump is characterized in that the starting underfloor Ausfahrabites is disposed radially within the suction region in which the Hubkontur extends so that the wings can move from their retracted state to the outside.
  • the take-off downlift travel section is at least partially radially disposed within the suction region.
  • a further preferred embodiment of the pump is characterized in that the starting underfloor supply region has an underfloor pressure portion which is radial is arranged within a pressure range, in which the stroke contour is such that the wings are moved in the operation of the pump hubkontur intimid from its extended state radially inward.
  • the underfoil pressure section is at least partially disposed radially within the pressure area.
  • a further preferred embodiment of the pump is characterized in that the underfoil pressure section is in communication with the take-off downlift travel section.
  • the wings entering the underfloor pressure section push working fluid into the takeoff lower flight out section.
  • the located in the Startuntererielausfahrabêt wing or are located in the Startuntererielausfahrabrough wing moves outward in the direction of Hubkontur and create in a subsequent separation area a separation between the suction and pressure range or between a pump inlet and the pump outlet, so that the pump begins to promote.
  • the wings are extended by the forces acting during operation of the pump centrifugal forces.
  • a further preferred embodiment of the pump is characterized in that the valve channel is arranged in the circumferential direction overlapping to the Startunterhofflausfahrabrough. The overlap makes it easy to work together with a wing slot in the region of the valve channel and the Startunterflausausfahrabitess enabled.
  • Another preferred embodiment of the pump is characterized in that the overlap in the circumferential direction is greater than the extension of a wing slot in the same direction.
  • the overlap may also be so large that the connection includes multiple wing slots.
  • a further preferred embodiment of the pump is characterized in that the valve channel via at least one wing slot, which is arranged radially overlapping to the valve channel and the Startunterflaugausfahrabêt, with the Startunterhofflausfahrabterrorism is connectable.
  • the vane in the vane slot practically constitutes a valve body. Once the vane has been extended a certain distance, the connection between the takeoff vane exhaust section and the valve port is partially released. The connection is fully released when the wing head is located near the stroke contour. Then, the take-off downlift travel section is connected to the pressure exit via the wing slot, the valve port, and the underride supply area.
  • a further preferred embodiment of the pump is characterized in that the connection underfloor supply region is designed and arranged such that a stroke volume, by which the vanes are extended from their retracted state when the pump is started, is shifted by rotation of the rotor into the closed volume of the take-off underwing area becomes.
  • the closed volume of the takeoff underrun supply area is constantly increased by the supplied lift volumes, thereby further extending the vanes in the takeoff downlift travel section. Escape of the working fluid is prevented by the closed volume of the take-off underwing area.
  • a further preferred embodiment of the pump is characterized in that the starting underfloor supply region or the connection underfloor supply region is arranged radially within the suction region and in the direction of rotation of the rotor adjacent to the starting underfloater discharge section.
  • the connection underfloor supply area may be arranged in the direction of rotation of the rotor in front of or behind the take-off lower-flight exit section.
  • the connection underfloor supply area disposed between the take-off lower run-out portion and the associated under-wing pressure portion.
  • a further preferred embodiment of the pump is characterized in that the valve channel is spaced in the radial direction of the kausunterhofflmakerss Scheme.
  • the connection between the valve channel and the connection underfloor supply region is realized by at least one vane slot which is arranged in the region of the valve channel and the connection underfloor supply region.
  • a further preferred embodiment of the pump is characterized in that the valve channel is arranged in the circumferential direction overlapping the connection underfloor supply region. The overlap easily allows co-operation with a wing slot to provide communication between the valving channel and the underflush supply area.
  • Another preferred embodiment of the pump is characterized in that the overlap in the circumferential direction is greater than the extension of a wing slot in the same direction.
  • the connection via the wing slot is only released when a wing arranged in the wing slot is extended by a predetermined distance.
  • a further preferred embodiment of the pump is characterized in that the valve channel emanates from the connection underfloor supply region.
  • the valve passage is permanently connected to the connection underpass supply area.
  • the valve passage may also start from the take-off down-take-out section.
  • valve channel is designed as a valve groove.
  • the valve groove has substantially the shape of a circular arc.
  • a further preferred embodiment of the pump is characterized in that the dimensions of the valve channel are so matched to the dimensions of the wings, the wing slots and the Hubkontur that when extending the wing or the wing in the Startunterhofflausfahrabêt via at least one wing slot fluid communication is released between the take-off lower run-out section and the valve passage. Then, the volume of the take-off underwing area is no longer completed, but communicates with the pressure outlet of the pump via the valve passage and the connection underfloor supply area.
  • a further preferred embodiment of the pump is characterized in that the fluid connection between the Startunterhofflausfahrabites and the valve channel is released as soon as the wing or in the region of the valve channel of the stroke contour comes close / reach or reach the Hubkontur / reach. Then, the starting underrun supply area is supplied from the pressure outlet of the pump with working fluid which is pressurized.
  • connection underfloor supply portion is disposed radially outward of a connection portion that connects the takeoff lower-flight outfeed portion with the underfloor pressure portion.
  • connection underfloor supply region is arranged in the radial direction between the connection section and the suction region.
  • a further preferred embodiment of the pump is characterized in that between the Startunterhofflausfahrabêt and one or the Unterhoffldruckabrough a throttle or bottleneck is formed.
  • the throttle or throat serves to lift the pressure in the underfinger pressure section.
  • the throttle effect of the connection section can be used for this purpose.
  • a further preferred embodiment of the pump is characterized in that the throttling or constriction is provided in a connection region which is arranged radially inside and in the circumferential direction between the suction region and the pressure region.
  • the connection region is preferably designed as a connection groove.
  • a further preferred embodiment of the pump is characterized in that the pump comprises two delivery chambers each having a suction region and a pressure region. Such a pump is also referred to as a double-flow pump.
  • a further preferred embodiment of the pump is characterized in that the start lower vane discharge section extends in the circumferential direction over less than a cell division.
  • a cell division corresponds to the distance between two adjacent wings or wing slots in the circumferential direction.
  • the predetermined limitation of the start underfloor exit section ensures that only the extension of a single wing is specifically supported when starting the pump.
  • a vane pump 1 is greatly simplified in longitudinal section reproduced. It has a base housing 3, which is penetrated by a drive shaft 5, which engages in a rotor 7.
  • the rotor 7 is provided on its peripheral surface with radially extending slots in which wings are arranged displaceably.
  • the rotor 7 is surrounded by a contoured ring 9 with a stroke contour, which is designed so that at least one, preferably two sickle-shaped delivery chambers are formed. These are traversed by the wings, wherein two pump sections are realized, each with a suction and a pressure range.
  • a pressure plate 11 is provided, through which the pumped by the vane pump 1 fluid from the pressure side of the pump is passed into a pressure chamber 13, which is part of a leading from the pressure side to a consumer fluid path.
  • the pressure plate 11 is traversed by pressure channels 15, which open on the one hand to the pressure region of the pump sections and on the other hand to the pressure chamber 13.
  • the opening into the pressure chamber 13 delivery openings of the pressure channels 15 are closed by a designated here as a cold start plate 17 and formed sealing element, which is pressed by a pressure spring 19, for example a plate spring, with a biasing force to the pressure plate 11.
  • a pressure spring 19 for example a plate spring
  • the funded by the vane pump 1 fluid preferably oil
  • a consumer such as a steering aid or to a transmission.
  • the invention shown in the following figures can be realized with or without cold start plate.
  • each is a vane pump 21; 71; 121; 181 simplified in cross section. To designate the same parts are in the FIGS. 2 to 5 same reference numerals used. First, the general structure of the vane cell pumps 21; 71; 121; 181 described.
  • a basic housing 23 is indicated, in which a drive shaft 25 is rotatable about a rotation axis 24.
  • the drive shaft 25 drives a (not shown) rotor, which has radially extending wing slots, in which wings 26, 27, 28 are slidably received.
  • the wings 26 to 28 are each shown in their retracted state. When extending the wings 26 to 28, based on the axis of rotation 24, move radially outwards until they come with their radially outer ends to a lifting contour 29 for abutment or strike.
  • the in the Figures 2 and 3 illustrated vane pumps 21; 71 comprise a total of ten wings, which are evenly distributed over the circumference of the rotor.
  • the vane pump 121 shown in Figures 4 and 5; 181 each comprise twelve wings, which are also distributed uniformly over the circumference of the rotor.
  • the operating direction of rotation of the vane pumps is indicated by an arrow 30.
  • the stroke contour 29 comprises two diametrically arranged sections of a great circle 31 and two further diametrically arranged sections of a small circle 32.
  • the radially outer wing ends In their retracted state, the radially outer wing ends abut on the small circle 32, but are spaced from the great circle 31. In its extended state, the radially outer wing ends are also on the great circle 31.
  • the circumference of the radially outer wing ends in the retracted state is indicated by a dashed circle 34.
  • the design of the stroke contour 29 with the great circle 31 and the small circle 32 results in two substantially crescent-shaped delivery chambers, each having a suction region 36; 38 and a printing area 37; 39 include.
  • the sowing areas 36; 38 are each via a hydraulic line 41; 42 with a pump inlet 43 in communication, which in turn is in communication with a tank 44, from which a working medium in the vane pump 21; 71; 121; 181 is sucked.
  • the working medium is preferably hydraulic oil.
  • the hydraulic line 41, 42 may, as well as other hydraulic lines still described below, be designed as a hydraulic channel, which is recessed in the base housing 23 and a pressure plate in the base housing 23.
  • the pressure areas 37, 39 are connected via further hydraulic lines 45; 46 with a pump outlet 48, which is also referred to as a pressure outlet, in connection, via which the vane pump 21; 71; 121; 181 funded working fluid, in particular hydraulic oil, is conveyed to a consumer.
  • FIGS. 2 to 5 If one looks at a delivery chamber boundary surface arranged in the plane of the drawing, which is attached to a housing part or to a pressure plate (11 in FIG FIG. 1 ) can be provided. Between the delivery chamber boundary surface and another (not visible) delivery chamber boundary surface of the rotor with the wings 26 to 28 is rotatably arranged. The rotor, the stroke contour 29 and the delivery chamber boundary surfaces bound together with the wings vane cells, which are also referred to as Verdrängersammlung. The volume of the displacement chambers changes as the rotor rotates. Then it comes in the suction areas 36; 38 to an increase in volume, which causes suction of the working medium. At the same time there is a decrease in volume in the pressure areas 37, 39, which causes a pumping of the working medium to the pump outlet 48.
  • a promotion of working fluid of a working medium, in particular oil, filled vane pump can take place only when the oil inlet or pump inlet is safely separated from the oil outlet or pump outlet in the working space.
  • parked pump fall the upper wing due to their gravity in the associated slots, so that they no longer rest with their radially outer ends of the stroke contour.
  • the lower wings also fall due to their gravity from their slots, so that they rest with their radially outer ends of the stroke contour.
  • FIGS. 2 to 5 is in each case a two-stroke vane pump 21, 71; 121; 181 with two suction regions 36, 38 and two pressure areas 37, 39 shown.
  • the stroke contour 29 is on the great circle 31.
  • this installation position is in the lower half of the oil inlet or pump inlet 43 by at least one wing 49, which rests even at a standstill of the vane pump with its radially outer end to the Hubkontur 29 , separated from the oil outlet or pump outlet 48.
  • connection underfloor supply area 50 that includes a connection pressure portion 51 that is partially radially disposed within the pressure area 39.
  • the connection pressure portion 51 communicates with a connection suction portion 52 which is partially disposed radially inside the suction portion 36. Between the connection pressure section 51 and the connection suction section 52, a constriction 53 is provided.
  • the connection suction section 52 communicates with the pump outlet 48 via a hydraulic line 54.
  • the wings in the left pump half protrude with their radially inner ends into a take-off wing supply area 60 which is separated from the connection under-wing supply area 50.
  • the underrun supply area 60 includes an underfloor pressure portion 61 disposed radially inward and circumferentially overlapping with the pressure area 37.
  • the underfoil pressure portion 61 communicates with a take-off lower flight down section 62 that is radially inward and circumferentially overlapping the suction region 38 is arranged.
  • a constriction 63 is provided in a connecting portion 64 between the underfoil printing portion 61 and the starting underflough discharge portion 62.
  • the start underfloor supply region 60 initially communicates neither with the pump input 43 nor with the pump output 48.
  • connection underfloor supply area 50 in the separation area of the great circle is separated from the takeoff underfloor supply area 60.
  • the underrun supply area 60 forms a closed space and has no connection to the pump outlet 48.
  • the underfloor supply area 50 communicates with the pump outlet 48.
  • the incoming wings in the underwing pressure section 61 push oil into the takeoff downlift travel section 62.
  • the vanes 62 are located in the takeoff downlift travel section 62 and are thereby moved radially outward toward the lift contour 29 and provide separation in the upper pump half between oil ingress and oil leakage.
  • the wing pump begins to deliver and sets the vane pump 21 in motion.
  • a valve channel 65 is arranged in the form of a valve groove.
  • the valve channel 65 has substantially the shape of a circular arc.
  • the wings 28, 66 which are arranged in the region of the valve channel 65, a valve function, wherein the radially inner lower edge of the wing is a control edge.
  • the flow connection via the valve channel 65 is preferably only released when the wings 28, 66 in the region of the valve channel 65 abut almost on the stroke contour 29.
  • the starting underfloor supply region 60 communicates with the connection underfloor supply region 50 via the valve channel 65.
  • Both Unterappellchucks Anlagene 50, 60 are then supplied via the hydraulic line 54, optionally additionally 45, 46, with working fluid, which is pressurized.
  • vane pump 71 is similar to the in FIG. 2
  • the vane pump 71 includes a main underfloor supply portion 80 which is disposed in the right pump half and extends slightly up into the left pump half.
  • the main undersupply area 80 includes an underfoil pressure portion 81 disposed radially inward and circumferentially partially overlapping with the pressure area 39.
  • the underfoil pressure portion 81 communicates with a lower wing suction portion 82 that is disposed radially inward and circumferentially partially overlapping with the suction portion 36.
  • a constriction 83 is provided in a connection portion connecting the underfloor pressure portion 81 to the lower wing suction portion 82.
  • the lower wing suction section 82 communicates with the pump outlet 48 via a hydraulic line 84.
  • a connection underfloor supply region 90 is arranged, which also communicates with the pressure outlet 48 via a hydraulic line 94.
  • a take-off underrun supply area 100 including an underfoil pressure section 101 disposed radially inward and circumferentially partially overlapping with the pressure area 37.
  • the underfloor pressing portion 101 communicates with a take-off lower-flight-out portion 102 via a connecting portion 103.
  • the take-off lower run out section 102 is disposed radially inwardly and circumferentially overlapping with the suction area 38.
  • the underrun supply area 90 is disposed radially inwardly and circumferentially partially overlapping with the suction area 38. At the same time, the underrun supply area 90 is arranged circumferentially between the lower wing pressure portion 101 and the lower start-up run-off portion 102 and radially outward of the connecting portion 103. Radially outwardly from the connection underfloor supply region 90, a valve passage 105 in the form of a closed at its free end valve groove.
  • the valve channel 105 extends into a separation area 108 which is arranged between the suction area 38 and the pressure area 39.
  • a double arrow 111 the extension of the start underwing Ausfahrabitess 102 is indicated in the circumferential direction.
  • a double arrow 112 the distance between the free end of the valve channel 105 and the Startuntererielausfahrabêt 102 and the pressure region 39 is designated in the circumferential direction.
  • arrows 113, 114 it is indicated how far valve channel 105 and the Startunterhofflausfahrabêt 102 extend in the circumferential direction beyond the suction region 38 into the separation region 108 inside.
  • only a single wing is selectively extended in the great circle separation area.
  • the takeoff underwing supply area 100 with the underwing pressure section 101, the take-off lower run out section 102, and the connecting section 103 forms a closed volume.
  • the rotor of the vane pump 71 starts to rotate in the operating direction 30, all of the vanes in the underfloor pressure section 101 are retracted, with oil being displaced from the underfloor pressure section 101 via the connection section 103 into the takeoff lower flight out section 102.
  • the extent 111 of the take-off underrun out section 102 in the circumferential direction approximately corresponds to a cell division, so that in the take-off downlift discharge section 102 at first only a single wing, in FIG. 3 the wing 28, is extended. This makes it possible that the separation process is particularly rapid, that is, at a low angle of rotation, comes about.
  • the vane 28 reaches the stroke contour 29, the radially inner lower edge of the vane 28 releases a connection between the starting vane exhaust section 102 and the valve channel 105 via the associated rotor slot.
  • the vane 28 together with the associated vane slot performs a valve function.
  • the underrun supply area 100 is connected to the pump outlet 48 via the underfloor supply area 90 and the valve passage 105 and the hydraulic line 94.
  • connection portion 103 connecting the underfloor pressure portion 101 to the take-off down-wing discharge portion 102 may be implemented as a further groove on the rotor side of the associated housing plate, as a bore, or as a channel within the housing plate.
  • valve channel 105 ends in the circumferential direction just behind the suction region 38, as indicated by the arrows 113, 114.
  • a larger conveying angle 112 of the first separating wing can be achieved.
  • the connection portion 103 between the underfoil pressure portion 101 and the takeoff lower flight discharge portion 102 may be made narrow, so that there is higher pressure in operation in the underfloor pressure portion 101 than in the takeoff downflight discharge portion 102. This avoids lifting the wings under operating pressure.
  • FIGS. 4 and 5 Further measures are shown, with the help of a start-up of a vane pump can be ensured within the first turns.
  • the embodiments of the FIGS. 4 and 5 show ways to prevent the loss of oil from the under wing supply area during start-up and to use the extension of the wings to increase the oil volume in the under wing supply area.
  • at least one underfloor supply area in the separation areas of the vane pump forms a closed volume, as long as the wings are not yet extended.
  • an underfloor supply area has a connection to the pump outlet.
  • oil is pumped from the suction area into the closed underfoot area of the pump until the wings extend, separating the separation areas to start the wing pump.
  • the illustrated vane pump 121 includes a take-off underwing supply portion 130 mainly disposed in the upper pump half, with an under-wing pressure portion 131 disposed radially inward and circumferentially partially overlapping with the pressure portion 39.
  • the underfoil pressing portion 131 communicates via a connecting portion 133 with a lower wing sucking portion 132, also referred to as a take-off lower flighting portion, which is radially inward and partially circumferential overlapping to the suction region 38 is arranged.
  • a constriction 134 is provided in the connecting portion 133.
  • the connecting portion 133, a part of the underfloor pressure portion 131 and a part of the lower wing suction portion 132 are disposed in a separation area 138 between the suction area 38 and the pressure area 39.
  • connection under-wing supply area 140 In the circumferential direction counterclockwise adjacent to the lower wing suction portion 132, there is disposed a connection under-wing supply area 140 disposed radially inwardly and circumferentially overlapping with the suction area 38.
  • the connection underfloor supply area 140 communicates with the pump outlet 48 via a hydraulic line 144.
  • a valve channel 145 Radially outward from the connection underfloor supply region 140 is a valve channel 145 in the form of an arcuate valve groove.
  • the valve passage 145 extends radially outward and circumferentially overlapping with the lower wing suction portion 132.
  • the underfoil pressure portion 131 first forms a closed volume with the lower wing suction portion 132.
  • the vanes drive into the underfloor supply region 140 communicating with the pump outlet 48 by centrifugal force or oil from one of the pressure regions 37, 39 a short distance.
  • the aspirated during the extension of the wing or lower wing suction volume which is also referred to as stroke volume is moved by further rotation of the partially filled slots in the closed Startunterhoffless Quarry 130.
  • the volume of oil in the completed takeoff underrun supply area 130 is progressively increased by the delivered lift volumes. As a result, the wings continue to extend in the closed start under wing supply area 130.
  • a wing in the lower wing suction section 132 which is also referred to as a take-down wing exit section, reaches the lower edge of the valve channel 145 in the associated wing slot.
  • the associated wing head that is the radially outer end of the wing, is so close to the stroke contour 29, that a conveying of the wing pump begins, that is, the upper pump half begins to promote.
  • the wing As the wing continues to extend in the lower wing suction section 132, it reaches the lift contour 29 and, with the lower edge of the wing, releases the valve channel 145, thus providing a connection between the lower wing suction section 132 via the wing slot of the wing 146 to the valve channel 145 is released. Via the wing slot and the valve channel 145, the previously completed start under wing supply area 130 then communicates with the connection under wing supply area 140. By the valve function of the wing 146 an automatic, hydraulic and recurrent separation of the wing pump is achieved.
  • the above-described configuration of the underfloor supply regions is also provided in the lower pump half. This ensures that each pump half starts automatically.
  • a start under-wing feeding area 150 is preferably configured as the under-run supplying groove 150 like the under-wing feeding areas described above.
  • the underrun supply area 150 includes an underfloor pressure portion 151 and a lower wing suction portion, also referred to as a start wing discharge portion 152, which is connected to the underfloor pressure portion 151 via a connection portion 153 having a throat 154.
  • the under boot supply area 150 cooperates, as previously described with the upper pump half, with a connection underfloor supply area 160, which communicates with the pump outlet 48 via a hydraulic line 164. From the underrun supply area 160, a valve passage 165 extends, which extends into a separation area 168 in the lower pump half.
  • the vanes enter the underfloor pressure sections 131, 151, thereby conveying the underfloor oil into the associated lower wing suction sections or takeoff lower flight outfeed sections 132, 152. From there it reaches the associated valve channels 145, 165 and the connection underfloor supply areas 140, 160 via the respective rotor slots in the area of the lower wing suction sections 132, 152.
  • the oil of the entering wings is used to extend the wings in the suction areas 36, 38.
  • the bottlenecks 134; 154 in the take-off-hill supply areas 130; 150 are used to increase the underfloor pressure on the pressure side of the pump. Alternatively, this can also be done the throttle effect of the bottleneck rotor slot / valve channel 145; 165 are used.
  • the lower wing suction portions or lower wing extraction portions 132; 152 extend in the circumferential direction preferably via a cell division, that is, the distance between two adjacent wings in the circumferential direction.
  • the lower wing suction portions 132; 152 are preferably at the end of the associated suction region 38; 36 or at the beginning of the associated separation area 138; 168 arranged.
  • the underfloor supply areas 130, 140 and 150, 160 in the small circle 32 are completely separated.
  • the illustrated vane pump 181 includes a take-off underwing area 190 arranged in the left pump half with an under-wing pressure portion 191 and a lower-wing suction portion, which is also referred to as a take-down lower run-out portion 192.
  • the underfoil printing portion 191 is disposed radially inward and circumferentially partially overlapping with the printing area 37.
  • the lower wing suction portion 192 is disposed radially inwardly and circumferentially partially overlapping with the suction portion 38.
  • the two sections 191, 192 are connected to one another via a connecting section 193, which constitutes a constriction.
  • connection portion 193 is disposed radially inside of a connection under-wing supply region 200 disposed radially inward and circumferentially overlapping with the suction region 38.
  • the underrun supply portion 200 is circumferentially disposed between the lower wing pressure portion 191 and the lower wing suction portion 192.
  • the connection underfloor supply region 200 communicates with the pump outlet 48.
  • the underrun supply area 190 has a closed volume as long as the wings are retracted in the takeoff lower run out section 192. Radially outward of the lower wing suction portion 192, there extends a valve passage 205 formed by a circular arc-shaped valve groove extending from the underrun supply region 200. When a wing 206 is extended into or out of the lower wing suction section or lower tail extraction section 192, a connection between the lower wing suction section 192 and the valve channel 205 is created via the associated wing slot, which is also referred to as the rotor slot, since it runs in the rotor. This will make the takeoff underwing area 190 is connected to the pump outlet 48 via the underrun supply area 200 and the hydraulic line 204.
  • An underrun supply area 210 includes an underfloor pressure section 211 and a lower wing suction section, also referred to as a takeoff lower flight out section 212, which is connected to the underfloor pressure section 211 via a connecting section 213 which is a constriction.
  • the takeoff under wing area 210 initially has a closed volume.
  • a connection underfloor supply region 220 which communicates with the pump outlet 48 via a hydraulic line 224, the start underfloor supply region 210 is connected to the pump outlet 48 during normal operation of the vane pump 181.
  • a valve passage 225 extends radially outward of the lower wing suction section 212 and has substantially the shape of a circular arc.
  • the two start underfloor supply regions 190, 210 only form closed volumes only when the wing is retracted.
  • the vanes in the underrun supply area 200 for example by centrifugal force or by oil from one of the pressure areas, move slightly radially outward.
  • valve function will cause the wing in the lower wing suction sections or take-off lower flight exit sections 192, 212 via the associated vane slots and rotor slots a connection to the valve channels 205, 225 released.

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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)

Claims (23)

  1. Pompe, en particulier pompe à palettes, comprenant un rotor (7) qui présente des fentes de palettes s'étendant radialement, qui servent à guider des palettes (26-28, 49, 66, 146, 206), qui peuvent être sorties des fentes de palettes radialement vers l'extérieur dans la direction d'un contour de course (29) afin de provoquer une aspiration dans au moins une région d'aspiration (36, 38) et, dans au moins une région de pression (37, 39), qui est en liaison avec une sortie de pression (48), une sollicitation en pression d'un fluide de travail, et comprenant plusieurs régions d'alimentation sous palettes, une région d'alimentation sous palettes de départ (60 ; 100 ; 130, 150 ; 190, 210) avec une portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) présentant un volume fermé tant que la ou les palettes (28 ; 146 ; 206) ne sont pas encore sorties dans la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212), la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) pouvant être connectée par le biais d'un canal de soupape (65 ; 105 ; 145, 165 ; 205, 225) à une région d'alimentation sous palettes de liaison (50 ; 90 ; 140, 160 ; 200, 220), qui est en liaison avec la sortie de pression (48), caractérisée en ce que le canal de soupape (65 ; 105 ; 145, 165 ; 205, 225) est espacé de la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) dans la direction radiale.
  2. Pompe selon la revendication 1, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192) de la région d'alimentation sous palettes de départ (62; 102; 132; 192), dans l'état installé de la pompe, est disposée, par rapport à la force de pesanteur, dans une moitié supérieure de la pompe, respectivement du contour de course (29).
  3. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) de la région d'alimentation sous palettes de départ s'étend dans une région de séparation (68 ; 108 ; 138 ; 168 ; 198 ; 22) qui est disposée dans la direction périphérique entre la région d'aspiration (36, 38) et la région de pression (37, 39).
  4. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) est disposée radialement à l'intérieur de la région d'aspiration (36, 38) dans laquelle le contour de course (29) s'étend de telle sorte que les palettes (26-28, 49, 66, 146, 206) puissent se déplacer vers l'extérieur à partir de leur état rentré.
  5. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la région d'alimentation sous palettes de départ (60 ; 100 ; 130, 150 ; 190, 210) présente une portion de pression sous palettes (61 ; 101 ; 131, 151 ; 191, 211) qui est disposée radialement à l'intérieur d'une région de pression (37, 39) dans laquelle le contour de course (29) s'étend de telle sorte que les palettes (60; 100; 130, 150; 190, 210), pendant le fonctionnement de la pompe, soient déplacées radialement vers l'intérieur à partir de leur état sorti en raison du contour de course.
  6. Pompe selon la revendication 5, caractérisée en ce que la portion de pression sous palettes (61 ; 101 ; 131, 151 ; 191, 211) est en liaison avec la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212).
  7. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65 ; 105 ; 145, 165 ; 205, 225) est disposé dans la direction périphérique de manière à chevaucher la portion de sortie sous palettes de départ (62 ; 102 ; 32, 152 ; 192, 212).
  8. Pompe selon la revendication 7, caractérisée en ce que le chevauchement dans la direction périphérique est plus important que l'étendue d'une fente de palette dans la même direction.
  9. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65 ; 105 ; 145, 165 ; 205, 225) peut être connecté, par le biais d'au moins une fente de palette qui est disposée radialement de manière à chevaucher le canal de soupape (65 ; 105 ; 145, 165 ; 205, 225) et la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212), à la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212).
  10. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la région d'alimentation sous palettes de liaison (60; 100; 130; 190) est conçue et disposée de telle sorte qu'un volume de course suivant lequel les palettes (26-28, 49, 66, 146, 206) sont sorties à partir de leur état rentré lors du démarrage de la pompe soit déplacé par rotation du rotor (7) dans le volume fermé de la région d'alimentation sous palettes de départ (60 ; 100 ; 130, 150 ; 190, 210).
  11. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la région d'alimentation sous palettes de départ (60 ; 100 ; 130, 150 ; 190, 210) est disposée radialement à l'intérieur de la région d'aspiration (36, 38) et, dans la direction de rotation du rotor (7), en position adjacente à la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212).
  12. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65) est espacé de la région d'alimentation sous palettes de liaison (50) dans la direction radiale.
  13. Pompe selon la revendication 12, caractérisée en ce que le canal de soupape (65) est disposé dans la direction périphérique de manière à chevaucher la région d'alimentation sous palettes de liaison (50).
  14. Pompe selon la revendication 13, caractérisée en ce que le chevauchement dans la direction périphérique est plus important que l'étendue d'une fente de palette dans la même direction.
  15. Pompe selon l'une quelconque des revendications 1 à 11, caractérisée en ce que le canal de soupape (105 ; 145, 165 ; 205, 225) part de la région d'alimentation sous palettes de liaison (90 ; 140, 160 ; 200, 220).
  16. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65 ; 105 ; 145, 165 ; 205, 225) est réalisé sous forme de rainure de soupape.
  17. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que les dimensions du canal de soupape (65 ; 105 ; 145, 165 ; 205, 225) sont adaptées aux dimensions des palettes (26-28, 49, 66, 146, 206), des fentes de palettes et du contour de course (29), de telle sorte que lors de la sortie des palettes (26-28, 49, 66, 146, 206), respectivement de la palette, dans la portion de sortie sous palettes de départ, une liaison fluidique soit libérée par le biais d'au moins une fente de palette entre la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) et le canal de soupape (65).
  18. Pompe selon la revendication 17, caractérisée en ce que la liaison fluidique entre la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) et le canal de soupape (65) est libérée dès que la ou les palettes s'approche(nt) du contour de course (29) dans la région du canal de soupape (65) ou atteigne(nt) le contour de course.
  19. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la région d'alimentation sous palettes de liaison (90 ; 200, 220) est disposée radialement à l'extérieur d'une portion de liaison (103 ; 193, 213) qui relie la portion de sortie sous palettes de départ (102 ; 192, 212) à la portion de pression sous palettes (101 ; 191, 211).
  20. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce qu'entre la portion de sortie sous palettes de départ (62 ; 102 ; 132, 152 ; 192, 212) et une ou la portion de pression sous palettes (61 ; 101 ; 131, 151 ; 191, 211) est réalisé un point d'étranglement ou de rétrécissement (63 ; 134, 154).
  21. Pompe selon la revendication 20, caractérisée en ce que le point d'étranglement ou de rétrécissement est prévu dans une région de liaison qui est disposée radialement à l'intérieur et dans la direction périphérique entre la région d'aspiration (36, 38) et la région de pression (37, 39).
  22. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la pompe comprend deux espaces de refoulement ayant chacun une région d'aspiration (36, 38) et une région de pression (37, 39).
  23. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (102 ; 132, 152 ; 192, 212) s'étend dans la direction périphérique sur moins d'une division de cellule.
EP09729170.2A 2008-04-04 2009-03-12 Pompe, en particulier pompe à palettes Active EP2257693B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008018453 2008-04-04
PCT/EP2009/001758 WO2009121471A1 (fr) 2008-04-04 2009-03-12 Pompe, en particulier pompe à palettes

Publications (2)

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EP2257693A1 EP2257693A1 (fr) 2010-12-08
EP2257693B1 true EP2257693B1 (fr) 2015-10-21

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EP (1) EP2257693B1 (fr)
DE (1) DE112009000552A5 (fr)
WO (1) WO2009121471A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016193043A1 (fr) 2015-06-02 2016-12-08 Magna Powertrain Bad Homburg GmbH Pompe à palettes et procédé permettant de faire fonctionner ladite pompe

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Publication number Priority date Publication date Assignee Title
WO2012079573A2 (fr) * 2010-12-15 2012-06-21 Ixetic Bad Homburg Gmbh Pompe à palettes et procédé permettant de faire fonctionner une pompe à palettes
DE102014222322B3 (de) * 2014-10-31 2016-02-04 Magna Powertrain Bad Homburg GmbH Flügelzellenpumpe mit verbessertem Startverhalten
DE102014222321B3 (de) * 2014-10-31 2015-12-10 Magna Powertrain Bad Homburg GmbH Flügelzellenpumpe mit verbessertem Startverhalten
DE102015215982B4 (de) * 2015-08-21 2017-03-16 Magna Powertrain Bad Homburg GmbH Pumpe sowie System zur Versorgung eines Verbrauchers
DE102016222816A1 (de) 2016-11-18 2018-05-24 Magna Powertrain Bad Homburg GmbH Flügelzellenpumpe mit verbessertem Anlaufverhalten

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US3828569A (en) * 1973-07-11 1974-08-13 Gen Motors Corp Automotive air conditioning system
JPS6179881A (ja) * 1984-09-28 1986-04-23 Toyoda Mach Works Ltd ベ−ンポンプ
JPH02252988A (ja) * 1988-12-02 1990-10-11 Jidosha Kiki Co Ltd オイルポンプ
US5147183A (en) * 1991-03-11 1992-09-15 Ford Motor Company Rotary vane pump having enhanced cold start priming
US6030195A (en) * 1997-07-30 2000-02-29 Delaware Capital Formation Inc. Rotary pump with hydraulic vane actuation
JP3610797B2 (ja) * 1998-12-11 2005-01-19 豊田工機株式会社 ベーンポンプ
JP3792578B2 (ja) * 2001-02-28 2006-07-05 カルソニックコンプレッサー株式会社 気体圧縮機

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016193043A1 (fr) 2015-06-02 2016-12-08 Magna Powertrain Bad Homburg GmbH Pompe à palettes et procédé permettant de faire fonctionner ladite pompe
US11215177B2 (en) 2015-06-02 2022-01-04 Hanon Systems Efp Deutschland Gmbh Vane pump and method for the operation thereof
DE112016002466B4 (de) 2015-06-02 2023-10-26 Hanon Systems Efp Deutschland Gmbh Flügelzellenpumpe und Verfahren zu deren Betrieb

Also Published As

Publication number Publication date
WO2009121471A1 (fr) 2009-10-08
DE112009000552A5 (de) 2011-04-07
EP2257693A1 (fr) 2010-12-08

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