EP2257693A1 - Pumpe, insbesondere flügelzellenpumpe - Google Patents
Pumpe, insbesondere flügelzellenpumpeInfo
- Publication number
- EP2257693A1 EP2257693A1 EP09729170A EP09729170A EP2257693A1 EP 2257693 A1 EP2257693 A1 EP 2257693A1 EP 09729170 A EP09729170 A EP 09729170A EP 09729170 A EP09729170 A EP 09729170A EP 2257693 A1 EP2257693 A1 EP 2257693A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- region
- section
- pump according
- underfloor
- 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.)
- Granted
Links
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims description 28
- 241000256259 Noctuidae Species 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 10
- 230000032823 cell division Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 28
- 238000007639 printing Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
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 vanes which are radially outwardly extendable from the vane slots in the direction of a Hubkontur to suction in at least one suction 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 project radially inward into the underfloor supply regions, in which a medium, preferably the working medium, is pressurized in order to bring about an extension of the vanes or to keep the vanes in the extended state.
- a medium preferably the working medium
- 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 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 with several Untereriel learnerssbe- reach to improve.
- 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 to when 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 outlet, and having a plurality of underfloor supply regions, characterized in that a starting underfloor supply region having a take-off downlift discharge section has a sealed volume as long as the wing or wings in the take-off down-hill exit 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 wing supply area, means in particular that the underwing supply area is not connected to the pressure outlet of the pump, as in conventional pumps, because this 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.
- 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 exemplary embodiment of the pump is characterized in that the starting underfloor supply region has an underfoil pressure section which is arranged radially within a pressure region in which the stroke contour runs such that the vanes are moved radially inwards from their extended state during operation of the pump.
- 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 wing located in the start underfloor extension section or the wings located in the start underfloor extension section are moved outward in the direction of the stroke contour and create a separation between the suction area and the pressure area or between a pump inlet and the pump outlet in a subsequent separation area, so that the pump closes start promoting.
- the wings are extended by the forces acting during operation of the pump centrifugal forces.
- a further preferred exemplary embodiment of the pump is characterized in that the starting underfloor outlet section can be connected via a valve channel to a connection underfloor supply region, which communicates 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. When the wings are retracted, the connection between the valve channel and the connection underfloor supply region or the starting underfloor exit section is interrupted.
- a further preferred embodiment of the pump is characterized in that the valve channel is spaced in the radial direction of the Startunterhofflausfahrabites. The distance is preferably selected so that the connection between the Startunterflü- gelausfahrabites and the valve channel via a vane slot is only fully released when the wing is near the stroke contour.
- the wing head is the radially outer end of a wing.
- 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 - A - allows with a wing slot in the region of the valve channel and the Startunterflausausfahrabitess.
- 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 Startunterhofflausfahrabêt, with the Startunterhofflausfahr- section 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 underrun extension section. Escape of the working fluid is prevented by the closed volume of the take-off underwing area.
- a further preferred exemplary embodiment of the pump is characterized in that the starting underfloor supply region or the connection underfloor supply region is arranged radially inside the suction region and in the direction of rotation of the rotor adjacent to the starting underfloater exhausting section.
- the connection underfloor supply region can be arranged in the direction of rotation of the rotor in front of or behind the starting underfloor discharge section.
- a further preferred embodiment of the pump is characterized in that the valve channel is spaced in the radial direction of the kausunterhofflskis 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 Ardsunterhoffllayssbe- rich.
- a further preferred embodiment of the pump is characterized in that the valve channel is arranged in the circumferential direction overlapping to the kausunterhofflskis- area. 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 at least one wing slot a Flu- idimpl between the Startunterflaugausfahrabêt and the valve channel is released. 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 underwing supply area is supplied by 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.
- Figure 1 shows a vane pump in longitudinal section
- FIG. 2 shows a simplified illustration of a cross-section of a vane pump with a take-off wing supply area and a connection underfloor supply area;
- FIG. 3 is a view similar to FIG. 2, including a connection underfloor supply area disposed circumferentially between an underfoil pressure section and a takeoff lower flight exit section;
- Figure 4 is a simplified view of a vane pump in cross-section with two
- Figure 5 is a similar view as in Figure 4 with a separation in the great circle.
- 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 transmitted through the wings. run, 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.
- FIGS. 2 to 5 each show a vane pump 21; 71; 121; 181 simplified in cross section. To denote the same parts, the same reference numerals are used in Figures 2 to 5. First, the general structure of the vane cell pumps 21; 71; 121; 181 described.
- a base 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 vane pumps 21 shown in FIGS. 2 and 3; 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.
- a delivery chamber boundary surface arranged in the plane of the drawing can be seen, which can be provided on a housing part or on a pressure plate (11 in FIG. 1).
- 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 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 which comprises a connection pressure section 51, which is arranged partially radially inside 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 underrun supply area 60 which is separated from the connection underfloor 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 section 61 communicates with a take-off downlighter travel 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 starting underfloor supply region 60 is initially connected neither to the pump input 43 nor to the pump output 48.
- connection underfloor supply area 50 is separated from the takeoff underfloor supply area 60 in the separation area of the great circle.
- the start underfloor supply area 60 forms a closed space and has no connection to the pump outlet 48.
- the connection underfloor supply area 50 communicates with the pump outlet 48.
- the incoming blades in the underfloor pressure section 61 push oil into the takeoff downlift travel section 62.
- the vanes 62 are then moved radially outward towards the lift contour 29 and create a separation between oil in the upper pump half - entry and oil outlet.
- the wing pump begins to deliver and sets the vane pump 21 in motion.
- a valve channel 65 in the form of a valve groove is arranged in the separation region between the suction region 38 and the pressure region 39 radially outside of the starting underfloor outfeed section 62 and the connection pressure section 51, partially overlapping in the circumferential direction with the sections 62 and 51.
- 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 is in communication 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.
- the vane pump 71 shown in FIG. 3 is similar to the vane pump 21 shown in FIG. 2.
- the vane pump 71 includes a main underfloor supply section 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 which 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 pressure section 101 is communicated with a take-off downlighter travel section 102 via a connecting section 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.
- the connection under-wing supplying portion 90 is circumferentially arranged between the under-wing pressing portion 101 and the starting under-wing extending portion 102 and radially outward of the connecting portion 103.
- a valve channel 105 Radially outward from the connection underfloor supply region 90, a valve channel 105 in the form of a valve groove closed at its free end emerges.
- 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 take-off wing supply area 100 forms a closed volume with the underwing pressure section 101, the take-off under-run extending section 102 and the connecting section 103.
- 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 initially only a single vane, in FIG.
- the vane pump 71 In normal operation of the vane pump 71, a part of the working medium is passed over the released connection to the valve channel 105 and the connection underfloor supply area 90 in order to extend all the wings in the suction area 38.
- the start underfloor supply region 100 is connected to the pump outlet 48 via the connection underfloor supply region 90 and the valve channel 105 as well as the hydraulic line 94.
- connection portion 103 connecting the underfloor pressure portion 101 to the start underfloor discharge portion 102 may be made, for example, as another 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 take-off downlift portion 102 may be configured as a throat so that there is higher pressure in operation in the underfoil pressure portion 101 than in the takeoff run-out portion 102. This avoids lifting the wings under operating pressure.
- FIGS. 2 and 3 can also be used for single-stroke pumps with a delivery chamber, that is to say with only one suction region and only one pressure region.
- a delivery chamber that is to say with only one suction region and only one pressure region.
- Any under wing supply areas are permanently connected to the pressure outlet.
- the wings start at the start of the pump due to centrifugal forces, supported by a hydraulic Untererielbeetzschlagung from. However, this happens delayed, since the wings continue to expand with increasing centrifugal force, but initially only reach the stroke contour in the pressure range. A start of the pump takes place only when the wings are extended in the separation areas.
- At least one underfloor supply region forms a closed volume in the separation areas of the vane pump as long as the wings are not yet extended.
- an underfloor supply area has a connection to the pump outlet.
- the vane pump 121 shown in FIG. 4 includes a start underfloor supply portion 130 mainly disposed in the upper pump half with an underfloor pressure portion 131 disposed radially inward and circumferentially partially overlapping with the pressure portion 39.
- the underfoil pressure section 131 communicates via a connecting section 133 with a lower wing suction section 132, also referred to as a starting underfloor outfeed section, which extends radially inwardly and circumferentially in part. Se is arranged overlapping to the suction region 38.
- 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 region 140 is connected to the pump outlet 48 via a hydraulic line 144.
- a valve channel 145 Radially outward from the connection underfloor supply region 140, a valve channel 145 in the form of an arcuate valve groove emerges.
- 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 Startunterhofferss 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-wing supply area 130.
- a wing in the lower wing suction section 132 also referred to as the start wing 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 When the wing continues to extend in the lower wing suction section 132, it reaches the stroke contour 29 and, with the lower edge of the wing, releases the valve channel 145, so that a connection is made. is released between the lower wing suction portion 132 via the wing slot of the wing 146 to the valve channel 145. Via the vane slot and the valve channel 145, the previously closed start underfloor supply region 130 then communicates with the connection underfloor supply region 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 starting-wing feeding 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 connection underfloor supply region 160, a valve passage 165 extends, which extends into a separation region 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 wing 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 take-off lower wing discharge 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 regions 130, 140 and 150, 160 in the small circle 32 are completely separated.
- the vane pump 181 shown in FIG. 5 includes a take-off underwing supply portion 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.
- the connecting portion 193 is disposed radially inside a connecting underfloor supply portion 200 disposed radially inwardly and circumferentially overlapping with the suction portion 38.
- the underrun supply portion 200 is circumferentially disposed between the lower wing pressure portion 191 and the lower wing suction portion 192.
- Via a hydraulic line 204, the connection underside supply area 200 is connected to 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.
- 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 start the wing supply area 190 via the connection underfloor supply area 200 and the hydraulic line 204 connected to the pump outlet 48.
- 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 is connected to the pump outlet 48 via a hydraulic line 224
- the start underfloor supply region 210 is connected to the pump outlet 48 in normal operation of the vane pump 181.
- a valve channel 225 extends, which extends radially outside the lower wing suction section 212 and essentially has the shape of a circular arc.
- the underfloor supply regions 190, 200 of the left pump half in the large circuit 31 in the separation regions 198, 228 are completely separated from the underfill supply regions 210, 220 of the right pump half.
- the two starting underfloor supply regions 190, 210 form initially closed volumes only when the wing is retracted.
- the vanes in the connection 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008018453 | 2008-04-04 | ||
PCT/EP2009/001758 WO2009121471A1 (de) | 2008-04-04 | 2009-03-12 | Pumpe, insbesondere flügelzellenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2257693A1 true EP2257693A1 (de) | 2010-12-08 |
EP2257693B1 EP2257693B1 (de) | 2015-10-21 |
Family
ID=40810037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09729170.2A Active EP2257693B1 (de) | 2008-04-04 | 2009-03-12 | Pumpe, insbesondere flügelzellenpumpe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2257693B1 (de) |
DE (1) | DE112009000552A5 (de) |
WO (1) | WO2009121471A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012079573A2 (de) * | 2010-12-15 | 2012-06-21 | Ixetic Bad Homburg Gmbh | Flügelzellenpumpe und verfahren zum betreiben einer flügelzellenpumpe |
DE102014222321B3 (de) * | 2014-10-31 | 2015-12-10 | Magna Powertrain Bad Homburg GmbH | Flügelzellenpumpe mit verbessertem Startverhalten |
DE102014222322B3 (de) * | 2014-10-31 | 2016-02-04 | Magna Powertrain Bad Homburg GmbH | Flügelzellenpumpe mit verbessertem Startverhalten |
DE112016002466B4 (de) | 2015-06-02 | 2023-10-26 | Hanon Systems Efp Deutschland Gmbh | Flügelzellenpumpe und Verfahren zu deren Betrieb |
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 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
2009
- 2009-03-12 EP EP09729170.2A patent/EP2257693B1/de active Active
- 2009-03-12 DE DE112009000552T patent/DE112009000552A5/de not_active Withdrawn
- 2009-03-12 WO PCT/EP2009/001758 patent/WO2009121471A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009121471A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009121471A1 (de) | 2009-10-08 |
EP2257693B1 (de) | 2015-10-21 |
DE112009000552A5 (de) | 2011-04-07 |
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