EP2268899B1 - Pompe, en particulier pompe a palettes - Google Patents

Pompe, en particulier pompe a palettes Download PDF

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Publication number
EP2268899B1
EP2268899B1 EP09726887.4A EP09726887A EP2268899B1 EP 2268899 B1 EP2268899 B1 EP 2268899B1 EP 09726887 A EP09726887 A EP 09726887A EP 2268899 B1 EP2268899 B1 EP 2268899B1
Authority
EP
European Patent Office
Prior art keywords
vane
pump
under
pump according
region
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
EP09726887.4A
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German (de)
English (en)
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EP2268899A1 (fr
Inventor
Johannes Maas
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
Original Assignee
Magna Powertrain Bad Homburg GmbH
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Publication of EP2268899A1 publication Critical patent/EP2268899A1/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, having 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 at least one suction region, with a Pump inlet communicates, a suction and in at least one pressure area, which is in communication with a pump outlet to cause a pressurization of a working medium, and with several under wing supply areas.
  • a pump in particular a vane pump, having 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 at least one suction region, with a Pump inlet communicates, a suction and in at least one pressure area, which is in communication with a pump outlet to cause a pressurization of a working medium, and with several under wing 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 startup behavior of 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 at least one Suction area, which communicates with a pump inlet, a suction and in at least one pressure area, which is in communication with a pump outlet, to effect a pressurization of a working medium, and to improve with several under wing supply areas.
  • EP1008753 disclose vane pumps with underwing supply areas for effecting extension of the wings.
  • the document EP1008753 may be considered as the closest prior art and discloses the features of the preamble of the independent claim.
  • 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 at least one suction region with a pump inlet is in communication, an intake and in at least one pressure region, which is in communication with a pump outlet to effect pressurization of a working medium, and having a plurality of under wing supply areas, achieved in that a Startunterhofflausfahrabêt is arranged and formed so that when starting the Pump exactly one wing, which moves with its radially inner end by the Startunterflausausfahrabêt is extended.
  • One wing is sufficient to separate the pressure area from the suction area. Through the targeted Extending only one wing can save pressure energy when starting the pump.
  • the pump is characterized in that the starting underfloor exit section is connectable via a valve passage to a connection underfloor supply area communicating with the pump outlet, also referred to as a pressure outlet.
  • the valve passage may start from the take-off down-hill exit section.
  • valve channel is spaced in the radial direction of the Startunterflaugausfahrabites.
  • both the valve passage and the takeoff lower flight outfeed section extend in the circumferential direction.
  • a preferred embodiment of the pump is characterized in that the Startuntererielausfahrabrough in the installed state of the pump, based on the Erdhekraft, in an upper half of the pump or the Hubkontur is arranged.
  • the Startunterflaugausfahrabites 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.
  • the inventive arrangement of the Startunterflaugausfahrabites s a quick extension of the wings, especially in the separation area, ensured.
  • a further preferred exemplary embodiment of the pump is characterized in that the start lower vane discharge section is arranged radially inwardly and in the circumferential direction partially overlapping the suction region.
  • the stroke contour runs in the suction area so that the wings can move out of their retracted state to the outside.
  • a further preferred embodiment of the pump is characterized in that the start lower vane discharge section extends into a separation region which is arranged in the circumferential direction between the suction region and the pressure region.
  • the separation region is preferably arranged in a great circle of the stroke contour.
  • a further preferred embodiment of the pump is characterized in that the Startunterhofflausfahrabêt with a Untererieldruckabrough is in communication, which is disposed radially inwardly and circumferentially partially overlapping to a pressure range in which the Hubkontur runs so that the wings stroke contour in operation of the pump their extended state are moved radially inward. It displaces existing working fluid in the wing slots.
  • the displaced working fluid volume is used in accordance with an essential aspect of the invention to extend only a single wing in the take-off lower wing outfeed section.
  • the take-off downlift travel section together with the underfloor pressure section has a closed volume as long as the wing is in the take-off downlift travel section not yet extended.
  • at least one delivery chamber is formed which comprises a suction region and a pressure region.
  • Closed volume in this context means, in particular, that the take-off down-take-out section and the under-wing pressure section do not communicate with the pressure outlet of the pump as in conventional pumps. The enclosed volume prevents working fluid from escaping from the starting underfloor exhaust section or the underfloor pressure section when the pump is started.
  • a further preferred embodiment of the pump is characterized in that the start lower vane Ausfahrabites is connected via a connecting channel with the lower vane pressure section in connection.
  • the connecting channel is preferably designed as a connecting groove.
  • the connecting channel at least partially, be designed as a bore.
  • a further preferred embodiment of the pump is characterized in that the connecting channel is arranged radially inside of the radially inner wing ends in their retracted state. This ensures that the retracted wings do not dip into the connection channel.
  • the connection channel may also be arranged in another plane such as the takeoff lower flight out section and the under wing pressure section.
  • the connecting channel can also lie radially outside, if it is arranged, for example, on the back of the plate.
  • valve channel is arranged in the circumferential direction overlapping to the Startunterhofflausfahrabites.
  • both the valve channel and the Startunterflaugausfahrabites are arranged radially inwardly and circumferentially partially overlapping to the suction region.
  • 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 passage is connectable to the take-off lower flight out section via precisely one wing slot, which is overlapped with the valve passage and the take-off down-flight exit section.
  • the vane in the vane slot practically constitutes a valve body. Once the vane has extended a certain distance, the connection between the takeoff vane exhaust section and the valve port is released. Then, the take-off lower flight out section is connected to the pressure port or pump port via the wing slot, the valve port and the under-port supply area.
  • a further preferred embodiment of the pump is characterized in that the valve channel emanates from the connection underfloor supply region. Via the connection underfloor supply area, the valve channel is connected to the pressure outlet of the pump.
  • 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 in the Startunterflaugausfahrabêt via exactly one wing slot fluid communication between the Startunterflaugausfahrabêt and the valve channel is released. Then the volumes of the take-off lower run-out section and the under-run pressure section are no longer completed, but communicate with the pressure outlet of the pump through the valve passage and the under-run 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 in the region of the valve channel of the stroke contour comes close or reaches the stroke contour. Then, the take-off down-wing discharge section is supplied with working fluid, which is pressurized, through the valve port and the under-puff supply area from the pressure outlet of the pump.
  • connection underfloor supply region is disposed radially outward of the connection channel connecting the take-off downlift travel section to the underfloor pressure section.
  • connection underfloor supply region is arranged in the radial direction partly between the connection channel and the suction region.
  • connection underfloor supply region and the valve channel extend over the entire suction region.
  • connection underrun supply area and the valve passage extend circumferentially beyond the suction area.
  • a further preferred embodiment of the pump is characterized in that arranged in the circumferential direction between the lower wing sections and / or areas webs are designed slightly narrower than the wing slot width. This ensures that the wing bottoms, that is, the radially inner ends of the wings are always supplied in these areas with pressurized working fluid.
  • the webs can also be made wider, if they each contain at least one notch, via which the wing bottoms are supplied with pressurized working medium.
  • 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 bottleneck is used to increase the pressure in the underfloor pressure section. Alternatively, this can also be the throttle effect of the connection channel can be used.
  • 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 underwing outfeed section is arranged in front of a great circle separation area in the upper pump half.
  • the one extended wing ensures that in the separation area the pressure area is separated from the suction area to allow a pump delivery.
  • a further preferred exemplary embodiment of the pump is characterized in that the starting lower-wing discharge section extends in the circumferential direction over substantially one cell division.
  • a cell division corresponds to the distance between two adjacent wings or wing slots in the circumferential direction. This ensures that when starting the pump specifically only the extension of a single wing is supported.
  • a further preferred embodiment of the pump is characterized in that the start lower wing extension section ends in the circumferential direction shortly after the suction region. This ensures that the separation of pressure and suction at the end of the suction area is completed.
  • 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 passed through 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 conveying openings of the pressure channels 15, in particular in conventional vane pumps, closed by a designated here as cold start plate 17 and trained sealing element, which is pressed by a pressure spring 19, for example, a plate spring with a biasing force to the pressure plate 11.
  • the pumped by the vane pump 1 fluid preferably oil
  • a consumer for example to 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 simplified in cross section. To designate the same parts are in the Figures 2 and 3 same reference numerals used. First, the general structure of the vane cell pumps 21; 71 described.
  • a basic housing 23 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 in FIG. 3 shown above in their retracted state.
  • vane pumps 21; 71 comprise a total of ten wings, which are evenly distributed 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 are spaced from the great circle 31.
  • the radially outer wing tips abut the great circle 31.
  • the circumference of the radially outer wing ends in the retracted state is in FIG. 3 indicated by a dashed circle 34.
  • FIG. 2 is indicated at 34 the difference in lift when all wings have underfloor pressure.
  • 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 suction regions 36; 38 are each via a hydraulic line 41; 42 with a pump inlet 43 in conjunction, in turn with a tank 44 (only in FIG. 3 shown), from which a working medium in the vane pump 21; 71 is sucked.
  • the working medium is preferably hydraulic oil.
  • the hydraulic line 41, 42 (only in FIG. 3 shown), as well as other hydraulic lines still described below, be designed as a hydraulic channel, in the Base housing 23 and a pressure plate in the base housing 23 is recessed.
  • 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 funded working fluid, in particular hydraulic oil, is conveyed to a consumer.
  • 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.
  • a delivery chamber boundary surface 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 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.
  • a two-stroke vane pump 21, 71 with two suction regions 36, 38 and two pressure regions 37, 39 is 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 of the Hubkontur 29 , separated from the oil outlet or pump outlet 48. This ensures that a lower wing pump, which includes the suction region 36 and the pressure region 37, promotes oil.
  • the vane pump 21 shown includes a main underfloor supply portion 50 which is disposed in the right pump half and extends slightly up into the left pump half.
  • the main underfloor supply portion 50 includes an underfoil pressure portion 51 disposed radially inwardly and circumferentially partially overlapping with the pressure portion 39.
  • the underfoil pressure portion 51 communicates with a lower wing suction portion 52 that is disposed radially inward and circumferentially partially overlapping with the suction portion 36.
  • a bottleneck 53 provided in a connection area connecting the underfloor pressure section 51 with the lower wing suction section 52.
  • the lower wing suction section 52 communicates with the pump outlet 48 via a hydraulic line 54.
  • a connection underfloor supply region 67 is arranged, which is also connected to the pump outlet 48 via a hydraulic line 69.
  • a take-off underrun supply portion 60 including an underfoil pressure portion 61 disposed radially inward and circumferentially partially overlapping with the pressure portion 37.
  • the under-wing pressing portion 61 communicates with a take-off lower-flight-out portion 62 via a connecting portion 64.
  • the take-off lower run out section 62 is disposed radially inward and circumferentially overlapping with the suction area 38.
  • the underrun supply region 67 is disposed radially inward and circumferentially partially overlapping with the suction region 38. At the same time, the underrun supply area 67 is circumferentially disposed between the lower-wing pressure portion 61 and the lower-takeoff run-out portion 62 and radially outward of the connecting portion 64. Radially outward from the connection underfloor supply region 67 is a valve channel 65 in the form of a valve groove closed at its free end.
  • the valve channel 65 extends into a separating region 68, which is arranged between the suction region 38 and the pressure region 39.
  • a double arrow 70 the extent of the start underwing Ausfahrabitess 62 is indicated in the circumferential direction.
  • the extent 70 of the take-off lower run-out portion 62 in the circumferential direction approximately corresponds to a cell division, so that in the take-off lower run out section 62, only a single wing, in FIG. 2 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 radially inner lower edge of the vane 28 releases a connection between the Startuntererielausfahrabêt 62 and the valve channel 65 via the associated rotor slot.
  • the vane 28 together with the associated vane slot performs a valve function.
  • the vane pump 21 During normal operation of the vane pump 21, a portion of the working fluid is passed via the released connection of the rotor slot to the valve channel 65 and the connection underfloor supply portion 67 to extend all wings in the suction region 38.
  • the starting underfloor supply region 60 is connected to the pump outlet 48 via the connection underfloor supply region 67 and the valve channel 65 as well as the hydraulic line 69.
  • the connecting portion 64 which connects the underfoil pressure portion 61 with the Startunterhofflausfahrabêt 62, for example, as a further groove on the rotor side of the associated pressure plate, as a bore or as a channel within the pressure plate or the housing or as a groove on the back of the printing plate are performed.
  • connection portion 64 between the underfoil pressure portion 61 and the takeoff lower flight out section 62 may be configured as a throat, so that there is higher pressure in operation in the underfoil pressure portion 61 than in the takeoff downflight discharge portion 62. This avoids lifting the wings under operating pressure.
  • vane pump 21 allows the separation of the working space of the upper wing pump in the separation area 68 with a rotation of the pump rotor by less than a quarter turn.
  • a rotation around a cell division may be sufficient.
  • the working medium present in the slots in particular oil, is displaced into the underfoil pressure section 61.
  • the displaced oil volume is used according to an essential aspect of the invention to extend the vane 28, which is viewed in the direction of rotation 30 in front of the great circle separation region 68 of the upper wing pump, from the associated rotor slot.
  • FIG. 2 the wing 28 is shown in its extended condition in which the pressure area 39 is separated from the suction area 38 by the wing 28 in the separation area 68.
  • the incoming wing in the pressure region 37 of the lower wing pump at least or just as much oil as a wing in the Startunterflaugausfahrabêt 62 needed to extend.
  • the underfoil pressing portion 61 communicates with the take-off lower-flight-out portion 62 via the connecting portion or connecting portion 64.
  • the oil displaced in the underfoil pressure section 61 by the retracting vane passes into the rotor slot of the vane 28, which is located in the region of the takeoff lower vane exit section 62.
  • the wing 28 is extended in this rotor slot.
  • the region or angular extent 70 of the takeoff lower flight out section 62 extends for about one cell division and ends shortly after the end of the suction region 38 of the upper wing pump. This ensures that there is always only a single wing in the area of the lower tail discharge section 62 and that the separation of the pressure and suction areas of the upper wing pump at the end of the suction area 38 is completed.
  • connection underfloor supply region 67 and the valve channel 65 extend over the entire suction region 38 of the upper wing pump.
  • the lower wing suction portion 52 extends over the suction area 36 of the lower wing pump.
  • the underfoil pressure portion 51 extends over the pressure area 39 of the upper wing pump.
  • the wings in the pressure areas 37, 39 of the wing pumps safely abut the Hubkontur 29, the pressure in the Untererieldruckabêten 51, 61 are accumulated.
  • the constriction or restriction 53 which comprises a cross-sectional constriction.
  • the pressure increase in the starting underfloor supply region 60 can be realized by a throttling action of the connecting channel 64 or by an additional throttle point in the connecting channel 64.
  • the underrun supply area 67 and the lower air intake portion 52 in the suction areas 38, 36 of the wing pumps are connected to the pump outlet 48 via the hydraulic lines 69 and 54. In the two suction regions 38, 36, the wings are therefore pressed only with the non-accumulated pump pressure to the stroke contour 29.
  • the webs that is, in the circumferential direction between the lower wing portion 67 and the lower wing sections 61, 62 and between the lower wing sections 61, 62 and the lower wing sections 51, 52 remaining material thicknesses should be performed substantially not smaller than the slot widths in the rotor, so over the wing slot no unwanted Short circuit between the lower wing sections 61, 62 and the lower wing area 67 is generated.
  • connection channel or connection region 64 can be used as a groove on the in FIG. 2 visible rotor side of the plate to run as a hole or channel in the plate or as a groove on the back of the plate. When designed as a groove on the back of the plate, this channel must be covered either by housing components or by an additional component.
  • this plate can be used as a channel cover.
  • the cold start plate may then contain openings for the hydraulic lines or hydraulic channels or pressure channels 69, 54.
  • the cold start behavior of the vane pump 21 is optimized by the present invention. As a result, throttling of the entire delivery flow of the vane pump 21 through the cold start plate can be dispensed with. Therefore, the vane pump according to the invention has a lower power consumption than pumps with a cold start plate.
  • Another advantage of the invention is that the wing in the region of the Startunterhofflausfahrabitess 62 initially parked with the vane pump stopped only to the inner edge of the valve channel 65. From then on, the volume of oil is trapped in the take-off downlift section 62, in the connecting duct 64 and in the underfoil pressure section 61, so that further collapse of the vanes due to gravity is initially hindered. If the vane pump is restarted a short time later, that is, before the vane has completely collapsed, for example, on vehicles with start / stop function, then the promotion of the vane pump starts even at lower speeds.
  • all of the vanes of the lower underfloor pump initially convey their oil into the starting underflough discharge section 62 during the starting process.
  • the effective area of the vanes between the rotor and the lifting contour 29 is referred to as the underfloor pump.
  • the underfloor pump As an underfloor pump, the effective range of the wing undersides, that is, the radially inner wing ends, referred to.
  • the lower-mounted underfoot pump of the vane pump 21 supplies the wings in the suction region 38 of the overhead wing pump.
  • the overhead under wing pump supplies the wings in the suction region 36 of the underlying underfloor pump.
  • 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.
  • connection underfloor supply region 90 Arranged in the left pump half is a connection underfloor supply region 90, which is also connected to the pump outlet 48 via a hydraulic line 94. Moreover, in the left pump half, there is disposed 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 or connecting passage 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 also disposed radially inwardly and circumferentially partially overlapping 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.
  • 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 radially inner lower edge of the vane 28 releases a connection between the Startuntererielausfahrabêt 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 running side of the associated housing plate, as a bore, or as a channel within the housing plate.
  • FIG. 3 are, unlike FIG. 2 , the wings in the upper half of the pump shown in the retracted state.

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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), qui peuvent être sorties des fentes de palettes radialement vers l'extérieur dans la direction d'un contour de course (29) afin de provoquer, dans au moins une région d'aspiration (36, 38) qui est en liaison avec une entrée de pompe (43), une aspiration et, dans au moins une région de pression (37, 39) qui est en liaison avec une sortie de pompe (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) étant disposée et réalisée de telle sorte que, lors du démarrage de la pompe, exactement une palette (28), qui se déplace par son extrémité radialement intérieure à travers une portion de sortie sous palettes de départ (62 ; 102), soit sortie, la portion de sortie sous palettes de départ (62 ; 102) pouvant être connectée par le biais d'un canal de soupape (65 ; 105) à une région d'alimentation sous palettes de liaison (67 ; 90) qui est en liaison avec la sortie de pompe (48), caractérisée en ce que le canal de soupape (65 ; 105) est espacé de la portion de sortie sous palettes de départ (62 ; 102) dans la direction radiale.
  2. Pompe selon la revendication 1, caractérisée en ce que, dans l'état installé de la pompe (21 ; 71), la portion de sortie sous palettes de départ (62 ; 102) est disposée, par rapport à la force de pesanteur, dans une moitié supérieure de la pompe (21 ; 71), 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) est disposée radialement à l'intérieur par rapport à la région d'aspiration (38) et de manière à chevaucher celle-ci partiellement dans la direction périphérique.
  4. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102) s'étend dans une région de séparation (68 ; 108) qui est disposée dans la direction périphérique entre la région d'aspiration (38) et la région de pression (39).
  5. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102) est en liaison avec une portion de pression sous palettes (61 ; 101) qui est disposée radialement à l'intérieur d'une région de pression (37) et de manière à chevaucher celle-ci partiellement dans la direction périphérique, dans laquelle région de pression le contour de course (29) s'étend, de telle sorte que les palettes, 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 sortie sous palettes de départ (62 ; 102) présente conjointement avec la portion de pression sous palettes (61 ; 101) un volume fermé, tant que la palette dans la portion de sortie sous palettes de départ (62 ; 102) n'est pas encore sortie.
  7. Pompe selon la revendication 6, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102) est en liaison avec la portion de pression sous palettes (61 ; 101) par le biais d'un canal de liaison (64 ; 103).
  8. Pompe selon la revendication 7, caractérisée en ce que le canal de liaison (64 ; 103) est disposé radialement à l'intérieur des extrémités de palettes radialement intérieures dans leur état rentré.
  9. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65 ; 105) est disposé de manière à chevaucher la portion de sortie sous palettes de départ (62 ; 102) dans la direction périphérique.
  10. Pompe selon la revendication 9, 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.
  11. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65 ; 105) peut être connecté, par le biais d'exactement une fente de palette qui est disposée de manière à chevaucher le canal de soupape (65 ; 105) et la portion de sortie sous palettes de départ (62 ; 102), à la portion de sortie sous palettes de départ (62 ; 102).
  12. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65 ; 105) part de la région d'alimentation sous palettes de liaison (67 ; 90).
  13. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal de soupape (65 ; 105) est réalisé sous forme de rainure de soupape.
  14. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que les dimensions du canal de soupape (65 ; 105) sont adaptées aux dimensions des palettes (26-28, 49), des fentes de palettes et du contour de course (29), de telle sorte que lors de la sortie de la palette (28) dans la portion de sortie sous palettes de départ (62 ; 102), une liaison fluidique soit libérée par le biais d'exactement une fente de palette entre la portion de sortie sous palettes de départ (62 ; 102) et le canal de soupape (65 ; 105).
  15. Pompe selon la revendication 14, caractérisée en ce que la liaison fluidique entre la portion de sortie sous palettes de départ (62 ; 102) et le canal de soupape (65 ; 105) est libérée dès que la palette s'approche du contour de course (29) dans la région du canal de soupape (65 ; 105) ou atteint le contour de course (29).
  16. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la région d'alimentation sous palettes de liaison (67 ; 90) est disposée radialement à l'extérieur du canal de liaison (64 ; 103) qui relie la portion de sortie sous palettes de départ (62 ; 102) à la portion de pression sous palettes (61 ; 101).
  17. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la région d'alimentation sous palettes de liaison (67 ; 90) et le canal de soupape (65 ; 105) s'étendent sur toute la région d'aspiration (38).
  18. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que des nervures disposées dans la direction périphérique entre les portions sous palettes (61, 62 ; 101, 102) et/ou régions sous palettes (67 ; 90) sont réalisées de manière quelque peu plus étroite que la largeur de fente de palette.
  19. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce qu'entre la portion de sortie sous palettes de départ (62 ; 102) et une ou la portion de pression sous palettes (61 ; 101) est réalisé un point d'étranglement ou de rétrécissement.
  20. 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).
  21. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102) est disposée avant une région de séparation de grand cercle (68 ; 108) dans la moitié supérieure de la pompe.
  22. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102) s'étend dans la direction périphérique sur essentiellement une division de cellule.
  23. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la portion de sortie sous palettes de départ (62 ; 102) se termine peu après la région d'aspiration (38) dans la direction périphérique.
EP09726887.4A 2008-04-04 2009-03-12 Pompe, en particulier pompe a palettes Active EP2268899B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008018454 2008-04-04
PCT/EP2009/001756 WO2009121470A1 (fr) 2008-04-04 2009-03-12 Pompe, en particulier pompe à palettes

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EP2268899A1 EP2268899A1 (fr) 2011-01-05
EP2268899B1 true EP2268899B1 (fr) 2015-10-21

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EP (1) EP2268899B1 (fr)
DE (1) DE112009000553A5 (fr)
WO (1) WO2009121470A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2773850B1 (fr) 2011-11-04 2017-03-29 Continental Automotive GmbH Dispositif de pompage pour le refoulement d'un fluide
CN107735574B (zh) * 2015-06-02 2020-08-14 翰昂汽车零部件德国有限公司 叶片泵和用于运行所述叶片泵的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP4193554B2 (ja) * 2003-04-09 2008-12-10 株式会社ジェイテクト ベーンポンプ

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Publication number Publication date
EP2268899A1 (fr) 2011-01-05
WO2009121470A1 (fr) 2009-10-08
DE112009000553A5 (de) 2011-04-07

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