EP1825146A1 - Pompe - Google Patents

Pompe

Info

Publication number
EP1825146A1
EP1825146A1 EP05814327A EP05814327A EP1825146A1 EP 1825146 A1 EP1825146 A1 EP 1825146A1 EP 05814327 A EP05814327 A EP 05814327A EP 05814327 A EP05814327 A EP 05814327A EP 1825146 A1 EP1825146 A1 EP 1825146A1
Authority
EP
European Patent Office
Prior art keywords
wing
caps
pressure
pump according
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05814327A
Other languages
German (de)
English (en)
Inventor
Ulrich Hiltemann
Hans-Rainer Schulz
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 Hueckeswagen GmbH
Original Assignee
LuK Automobiltechnik GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LuK Automobiltechnik GmbH and Co KG filed Critical LuK Automobiltechnik GmbH and Co KG
Publication of EP1825146A1 publication Critical patent/EP1825146A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/001—Radial sealings for working fluid
    • F04C27/002—Radial sealings for working fluid of rigid material
    • 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
    • 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
    • F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

Definitions

  • the invention relates to a pump, in particular a vacuum pump for motor vehicles, where a rotor is rotatably mounted with at least one wing within a pump housing and wherein the wing in the radial direction at its ends gliding in the housing optionally caps for sealing and wear protection having.
  • the caps are configured ⁇ as a single rigid components, for example made of plastic or sintered steel, which are attached to the wing, or they are firmly connected to the wing.
  • vane pumps of this type drive torque peaks can occur during a cold start or during unwanted reverse running, which can lead to damage or destruction of the pump.
  • a pump in particular a vacuum pump for motor vehicles, wherein a rotor is rotatably mounted with at least one wing within a pump housing and wherein the wing in the radial direction at its ends in the housing along sliding ends optionally caps for sealing and wear protection , wherein according to the invention, the caps or the wing or the wing tips are designed such that they additionally allow a pressure limiting function.
  • a pump is preferred in which the pressure limiting function is effective in one or both directions of rotation. This has the advantage that a pressure limiting function can be integrated into the pump without the need for additional components. This pressure limiting function can be used to avoid pressure and associated torque peaks, as z. B. may occur during cold start or reverse.
  • a pump according to the invention is characterized in that the caps or the wing made of elastic material, for example made of sheet metal, in particular hardened spring steel, but optionally also made of plastic and have an arcuate sliding and sealing at the radially outer end.
  • the arcuate sliding and sealing region in the form of a hook is resilient on one side is open, so that when the spring force of the hook portion is exceeded by the ein ⁇ acting pressure on the arcuate portion is pushed away from the housing wall and thus the pressure can not increase further.
  • This has the advantage that the pressure limiting function can be realized by a simple, haken-shaped design.
  • Another pump according to the invention is characterized in that the caps ( shimmer ⁇ out) have a guiding and holding area on the wing and that in the guide and Hal ⁇ te Scheme the wing arranged on the caps spring tongues and in the wing in Federzun ⁇ gen Scheme through holes are arranged one wing side to the other, so that when the spring force of the spring tongues is exceeded by opening the spring tongues pressure medium from the pressure to the suction side of the wing can flow and thus the pressure can not increase. Also preferred is a pump in which the caps and / or the wing have radial abutment means for limiting radial movement of the caps.
  • a pump is preferred in which the wing is formed entirely of sheet metal with ein ⁇ integrally integrated, hook-shaped in cross-section caps. This has the advantage that only a one-piece component can be used both as a wing and as a pressure limiter.
  • a further pump according to the invention is characterized in that the wing in the cap area has a first through-hole at the top and the caps a first tongue at the top and the wing a second through-hole at the bottom and the caps a second tongue at the bottom.
  • a pump is preferred in which the caps have means for radial stroke limitation, so that the caps can not fall out of the rotor slot in any case.
  • a pump is preferred in which the spring tongues have stop limits on the wing, so that the wing can safely retract into the rotor.
  • the caps have recesses on the side opposite the spring tongues, so that the bore openings are exposed on this side.
  • a further pump according to the invention is characterized in that the pressure in the hook region acts to open on one side from the arcuate region and from the opposite side, so that the pressure-limiting function becomes effective when the pump is reversed.
  • FIG. 1 shows in cross-section the rotation group of a vane pump with a wing according to the invention.
  • Figure 2 shows the part of a wing with a hook-shaped end cap.
  • Figure 3 shows the part of a wing with an end cap with spring tongue valves.
  • FIG. 1 shows in cross-section the rotation group of a vane-cell vacuum pump with a monoeriel.
  • a rotor 3 is arranged eccentrically, wel ⁇ cher a wing 5 in the direction of rotation 7 drives.
  • the wing 5 is mounted radially displaceable within the rotor 3 in a slot 9.
  • At its ends has the wing 5 hakenför ⁇ mig executed end caps 11 which are integrally connected to the wing, where spielnem the wing and the end caps can be made of a spring steel sheet NEN.
  • the hook-shaped sealing cap ends 11 slide sealingly along the inner wall 13 of the housing 1 along.
  • a delivery pressure is built up in front of the wing 5 in the region 15 and a suction pressure is built up in the region 17 behind the wing.
  • the delivery pressure in the region 15 is thus effective also within the hook-shaped wing end 11 in the region 19 and presses the hook head 11 to the inner wall 13 of the housing 1 by the action on the surface of the hook head 11.
  • a reinforcement of the wing head system is brought about in the direction of rotation 7. Should the direction of rotation of the vane pump change as a result of any circumstance, a pressure would now be built up in region 17 and a suction pressure would arise in region 15.
  • a pressure in the region 17 would become effective in the gap 21 of the wing head 11 and push the wing head 11 away from the wall 13, so that here Press the and the wing head 11 away from the wall 13, so that automatically results in a pressure limit.
  • This limiting function ensures that corresponding drive torque peaks remain limited during reverse operation and can not lead to damage or destruction of the vacuum pump.
  • An embodiment of the wing 5 with the corresponding spring end caps 11 made of specially hardened spring steel also leads to a corresponding wear protection of the end caps themselves.
  • the rotor 3 has two recesses 23 into which the end caps 11 in the region of the bottom dead center, So the so-called Schmiegespalts 25, retract.
  • FIG. 2 shows a three-dimensional representation of a wing section 30 with a hook-shaped end cap 38.
  • a cylindrical groove 34 is introduced on the narrow side 32, which serves as a guide for an arcuate guide member 36 of the hook-shaped wing end cap 38.
  • the guidance of the end cap 38 is designed by a narrower groove area 40 and a narrower guide area 42 of the end cap in such a way that the wing cap 38 can experience a certain play in the radial direction of movement 44 in order to bear in a sealing manner but then in a kind of stop the cylindrical groove 34 and the arc shape 36 of the wing guide is limited.
  • the hook-shaped end cap 38 with its guide parts 36 and 42 can be bent in one piece from a sheet of metal.
  • the function of the hook-shaped end part 38 of the cap corresponds to the function as described in FIG. 1 and acts as a pressure-limiting function in one direction of rotation, while in the other direction of rotation the pressure rests sealingly against the cap wall of the vane pump.
  • the radially projecting end portion 46 of the guide portion 42 may possibly project so far that it can be effective as a stop for the spring movement of the hook-shaped cap 38.
  • the preferred application for this Kappen ⁇ execution is, as already described in Figure 1, in a pressure protection and Momentenbegrenzung in case of unwanted backward running of the pump.
  • FIG. 3 shows a further version of a cap with integrated pressure-limiting function.
  • the end portion of a monoeriel 50 first has a narrow continuation 52, which then opens into a rounded, wider end 54 head.
  • the rounded end head 54 is surrounded by an end cap 56, which may for example also be bent from a corresponding sheet metal.
  • the end cap 56 receives through two cuts 58 and 60 at their side a spring tongue 62 which can open in the direction of movement 64 when a correspondingly high pressure occurs through a bore 66 on the side 68 of the wing, which exceeds the spring force of the spring tongue 62.
  • a pressure limit is ensured in the direction of rotation 74 of the blade 50.
  • the cap 56 also has in the lower part ei ⁇ ne recess 70, in which a second bore 72 opens.
  • the bore 72 is also closed on the opposite side by a spring tongue, not shown here, so that over the lower bore 72 a pressure limiting function ent ⁇ against the direction of rotation 74 results. Due to the design of this cap, therefore, a pressure limit is realized in both directions of rotation.
  • the cap 56 also has two hook-shaped sections 76, which together with projections 78 of the wing end head 54 form a movement limitation in the radial direction of the cap 56. It should be noted that the fittings 62 may require a limit stop so that the wing can enter the rotor slot even when it is open.
  • the invention thus relates to a cap for vacuum pump blades or a wing itself with integrated pressure relief.
  • This realizes a simple, cost-effective overpressure limitation in vacuum pumps and a reduction of the maximum drive torques occurring.
  • a wing with end caps, which are preferably made of sheet metal, specially hardened spring steel.
  • these end caps can ensure the required wear protection; on the other hand, a pressure-limiting function can additionally be integrated without the need for further components.
  • This pressure limitation function can be used to avoid pressure and associated drive torque peaks, as described, for example, in US Pat. B. nen occur in cold start or reverse. LIST OF REFERENCES

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

Pompe, en particulier pompe à vide pour des véhicules à moteur, dans laquelle un rotor (3) pourvu d'au moins une ailette (5) est monté de manière à pouvoir être entraîné en rotation à l'intérieur d'un carter (1) de pompe. Ladite ailette (5) possède éventuellement, dans le sens radial au niveau de ses extrémités glissant le long du carter (1), des capuchons (38) destinés à assurer l'étanchéité et servant de protection contre l'usure.
EP05814327A 2004-11-27 2005-11-09 Pompe Withdrawn EP1825146A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004057347 2004-11-27
PCT/DE2005/002020 WO2006056162A1 (fr) 2004-11-27 2005-11-09 Pompe

Publications (1)

Publication Number Publication Date
EP1825146A1 true EP1825146A1 (fr) 2007-08-29

Family

ID=35840609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05814327A Withdrawn EP1825146A1 (fr) 2004-11-27 2005-11-09 Pompe

Country Status (3)

Country Link
EP (1) EP1825146A1 (fr)
DE (1) DE112005002687A5 (fr)
WO (1) WO2006056162A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007042134A1 (fr) * 2005-10-13 2007-04-19 Joma-Hydromechanic Gmbh Pompe a rotor et ailette pour pompe a rotor
EP2038555B1 (fr) * 2006-06-07 2010-10-27 ixetic Hückeswagen GmbH Pompe à palettes
AT505061B1 (de) * 2007-03-30 2008-12-15 Tcg Unitech Systemtechnik Gmbh Drehschieberpumpe
DE102008014243B4 (de) 2007-04-13 2018-10-31 Schaeffler Technologies AG & Co. KG Flügelzellenpumpe
ITTO20070764A1 (it) * 2007-10-26 2009-04-27 Vhit Spa Pompa a vuoto a monopaletta
DE102008019440A1 (de) * 2008-04-17 2009-10-22 FRÖTEK Kunststofftechnik GmbH Flügel einer Flügelzellenpumpe oder eines Flügelzellenkompressors
ITTO20080382A1 (it) 2008-05-22 2009-11-23 Vhit Spa Paletta con puntali basculanti, e pompa volumetrica rotativa che impiega tale paletta
GB0907606D0 (en) * 2009-05-01 2009-06-10 Wabco Automotive Uk Ltd Improved monovane vacuum pump
FR2957984B1 (fr) * 2010-03-24 2016-07-29 Barba Willy Del Compresseur ou pompe rotative a palettes semi spheriques "sans huile" pour comprimer ou pomper les fluides gazeux ou liquides
WO2013041777A1 (fr) * 2011-09-23 2013-03-28 Willy Del Barba Compresseur ou pompe rotative a palettes semi- spheriques « sans huile « pour comprimer ou pomper les fluides gazeux ou liquides
DE102016122903A1 (de) * 2016-11-28 2018-05-30 Schwäbische Hüttenwerke Automotive GmbH Gaspumpe mit Ölrückführung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE555974C (de) * 1929-02-18 1932-08-06 Harry Ralph Ricardo Drehkolbenverdichter mit sichelfoermigem Arbeitsraum und von Fluegelkolben durch Reibung mitgenommenem Gehaeusezylinder
DE938405C (de) * 1953-11-13 1956-01-26 Arthur Pfeiffer Fa Vakuumpumpe mit Drehkolben und sichelfoermigem Arbeitsraum
DE3832042C2 (de) * 1987-10-05 1997-08-14 Barmag Barmer Maschf Flügelzellenpumpe
FR2845435B1 (fr) * 2002-10-08 2006-02-17 Peugeot Citroen Automobiles Sa Pompe a vide a palette comportant un dispositif de securite
DE10307040A1 (de) * 2003-02-20 2004-09-16 Luk Automobiltechnik Gmbh & Co. Kg Vakuumpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006056162A1 *

Also Published As

Publication number Publication date
WO2006056162A1 (fr) 2006-06-01
DE112005002687A5 (de) 2007-08-09

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