EP1828609B1 - Pompe rotative a ailettes - Google Patents

Pompe rotative a ailettes Download PDF

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Publication number
EP1828609B1
EP1828609B1 EP05813372A EP05813372A EP1828609B1 EP 1828609 B1 EP1828609 B1 EP 1828609B1 EP 05813372 A EP05813372 A EP 05813372A EP 05813372 A EP05813372 A EP 05813372A EP 1828609 B1 EP1828609 B1 EP 1828609B1
Authority
EP
European Patent Office
Prior art keywords
rotor
rotation
region
groove
annular groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05813372A
Other languages
German (de)
English (en)
Other versions
EP1828609A1 (fr
Inventor
Achim Koehler
Christian Langenbach
Joerg Wuerz
Joerg Morlok
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1828609A1 publication Critical patent/EP1828609A1/fr
Application granted granted Critical
Publication of EP1828609B1 publication Critical patent/EP1828609B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0854—Vane tracking; control therefor by fluid means
    • F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3442—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/70—Safety, emergency conditions or requirements
    • F04C2270/701—Cold start

Definitions

  • the invention relates to a vane pump according to the preamble of claim 1.
  • Such a vane pump is through the DE 199 52 167 A1 known.
  • This vane pump has a pump housing, in which a rotor is arranged, which is driven in rotation by a drive shaft.
  • the rotor has distributed over its circumference a plurality of grooves which extend at least substantially radially to the axis of rotation of the rotor and in each of which a wing-shaped conveying element is guided displaceably.
  • the pump housing has a surrounding the rotor, to its axis of rotation eccentric peripheral wall, against which the wings with their radially outer ends.
  • the pump housing has in the direction of the axis of rotation of the rotor to these adjacent housing end walls.
  • enlarging and reducing chambers are formed due to the eccentric arrangement of the peripheral wall between the wings, between which the medium to be conveyed is promoted by increasing the pressure from a suction to a circumferentially offset to this pressure range.
  • the wings are held due to the centrifugal forces with a rotating rotor in abutment against the peripheral wall, but especially at start-up of the vane pump at low speed only small Centrifugal forces act, so that the vane pump promotes little.
  • an annular groove extending over part of the circumference of the rotor is provided in a housing end wall, which is supplied with compressed medium from another feed pump, which forms a common pump arrangement with the vane pump.
  • the annular groove is connected to the radially inner areas bounded by the vanes in the grooves of the rotor through the wings. Due to the increased pressure in the inner regions of the grooves, the wings are pressed in addition to the centrifugal force radially outward to the peripheral wall. However, this measure is only possible if the additional pump is present. Moreover, can be pressurized by the only over a part of the circumference of the rotor extending annular groove, the inner regions of the grooves of the rotor only over a corresponding part of a revolution of the rotor, which may result in only a small contact pressure of the wings on the peripheral wall.
  • JP 63 280883 A which is considered as a matter of prior art, discloses a vane pump with a rotor, the conveying elements promote during a rotational movement of the rotor medium from a suction to a pressure range, wherein provided in a housing end wall over a part of the circumference of the rotor extending annular groove is, which is connected to the pressure area via a connecting groove in the housing end wall.
  • the vane pump according to the invention with the features according to claim 1 has the advantage that a pressurization of the radially inner inner regions of the grooves of the rotor is effected by the pressure generated by the vane pump itself.
  • the pressurization of the inner regions of the grooves of the rotor is improved.
  • a drag flow is produced, through which an increase in pressure in the annular groove is effected, which in turn leads to an increase in pressure in the inner regions of the grooves of the rotor communicating with the annular groove.
  • FIG. 1 a vane pump in a simplified representation in a cross section along line II in FIG. 2, FIG. 2 the vane pump according to a first embodiment in a cross section along line II-II in FIG. 3, FIG. 3 the vane pump in a longitudinal section along line III-III in FIG. 1 and FIG. 4 the vane pump in a cross section according to a second embodiment.
  • a vane pump is shown, which is preferably provided for conveying fuel, in particular diesel fuel. Through the vane pump while fuel from a Reservoir fed to a high pressure pump.
  • the vane pump may be arranged separately from the high pressure pump, attached to the high pressure pump or integrated into the high pressure pump.
  • the vane pump has a pump housing 10, which is designed in several parts, and a drive shaft 12, which projects into the pump housing 10.
  • the pump housing 10 has two housing end walls 14,16, is limited by the axial direction, that is, in the direction of the axis of rotation 13 of the drive shaft 12, a pump chamber. In the circumferential direction, the pump chamber is bounded by a peripheral wall 18, which may be formed integrally with one of the housing end walls 14,16 or separated from them.
  • a rotor 20 is arranged, which is rotatably connected to the drive shaft 12, for example via a tongue and groove connection 22.
  • the rotor 20 has a plurality of distributed over its circumference, at least substantially radially to the axis of rotation 13 of the rotor 20 extending grooves 24th on.
  • the grooves 24 extend, starting from the outer jacket of the rotor 20, towards the axis of rotation 13 and into the rotor 20.
  • four grooves 24 are provided, wherein fewer or more than four grooves 24 may be provided.
  • a disk-shaped conveying element 26 is slidably disposed, which is referred to below as a wing and protrudes with its radially outer end portion of the groove 24.
  • the inside of the peripheral wall 18 of the pump housing 10 is formed eccentrically to the axis of rotation 13 of the rotor 20, for example circular or other shape.
  • a suction area is provided, in which at least one suction opening 28 opens.
  • In the suction region is preferably in at least one housing end wall 14,16 an elongated in the circumferential direction of the rotor 20, approximately kidney-shaped curved suction groove 30th formed, in which the suction opening 28 opens.
  • the suction opening 28 opens into the suction groove 30, preferably in its counter to the direction of rotation 21 of the rotor 20 facing end region.
  • the suction opening 28 is connected to an inlet leading from the reservoir.
  • a pressure region is provided in at least one housing end wall 14,16, in which at least one pressure port 32 opens.
  • a pressure groove 34 which is elongate in the circumferential direction of the rotor 20 and is approximately kidney-shaped, is preferably formed in at least one housing end wall 14,16, into which the pressure opening 32 opens.
  • the pressure opening 32 opens into the pressure groove 34, preferably in its end region pointing in the direction of rotation 21 of the rotor 20.
  • the pressure port 32 is connected to a leading to the high-pressure pump drain.
  • the suction port 28, the suction groove 30, the pressure port 32 and the pressure groove 34 are arranged at a radial distance from the rotational axis 13 of the rotor 20 near the inside of the peripheral wall 18.
  • the wings 26 abut with their radially outer ends on the inside of the peripheral wall 18 and slide on this during the rotational movement of the rotor 20 in the direction of rotation 21 along.
  • the suction groove 30 and the suction opening is arranged in a peripheral region, in which the volume of the chambers 36 increases during the rotational movement in the direction of rotation 21 of the rotor 20, so that they are filled with fuel.
  • the pressure groove 34 and the pressure opening 32 is arranged in a peripheral region, in which the volume of the chambers 36 is reduced during the rotational movement in the direction of rotation 21 of the rotor 20, so that from this fuel into the pressure groove 34 and from this into the pressure port 32 is displaced ,
  • annular groove 38 is provided, which is connected to the pressure groove 34 via a connecting groove 40.
  • the annular groove 38 extends at such a radial distance from the axis of rotation 13 of the rotor 20, that this is opposite to the limited by the wings 26 in the grooves 24 of the rotor 20 radially inner interior regions.
  • the annular groove 38 is formed at least approximately concentric to the axis of rotation 13 of the rotor 20 and between this and the drive shaft 12, a sealing region 39 is formed, in which between the rotor 20 and the adjacent housing end wall 14,16 only a small axial distance is present.
  • the connecting groove 40 extends in such a way that it approaches the annular groove 38) in the direction of rotation 21 of the rotor 20. Furthermore, the connecting groove 40 is curved according to the invention, in particular helically curved.
  • the connecting groove 40 preferably opens on the one hand at least approximately tangentially in the pressure groove 34 and / or on the other hand at least approximately tangentially in the annular groove 38.
  • the connecting groove 40 opens in the counter to the direction of rotation 21 of the rotor 20 facing end portion of the pressure groove 34.
  • annular groove 38 and connecting them with the pressure groove 34 connecting groove 40 is arranged or it can be arranged in both housing end walls 14 and 16 each have an annular groove 38 and a connecting groove 40, which then preferably mirror images of each other in the housing end walls 14 and 16 are arranged. It can also be provided that an annular groove 38 is arranged in both housing end walls 14 and 16, but a connecting groove 40 is arranged only in a housing end wall 14 or 16.
  • the suction groove 30 and / or the pressure groove 34 is formed, the other housing end wall 16 and 14 is smooth, or that in both housing end walls 14 and 16 each have a suction 30th and / or pressure groove 34 is formed, which are then preferably arranged in mirror image to each other in the housing end walls 14 and 16.
  • the suction opening 28 and the pressure opening 32 is provided only in a housing end wall 14 or 16.
  • the rotor 20 and the wings 26 in the axial direction on both sides are loaded at least approximately equal, so that no or only a small resultant force acts on the rotor 20 and the wings 26 in the direction of the axis of rotation 13.
  • the depth of the annular groove 38 and the connecting groove 40 in the housing end wall 14,16 for example, about 0.1 to 2mm, preferably the width of the grooves 38 and 40 is greater than the depth.
  • FIG. 4 is the vane pump according to a second embodiment shown, in which the construction is substantially the same as in the first embodiment, but the arrangement of the annular groove 138 is modified. Notwithstanding the first embodiment, the annular groove 138 is arranged eccentrically to the axis of rotation 13 of the rotor 20.
  • the annular groove 138 is formed, for example, at least approximately circular, wherein the center M is arranged offset with respect to the axis of rotation 13 of the rotor 20 by a distance e forming the eccentricity.
  • the eccentricity e of the annular groove 138 is at least approximately equal and in the same direction as the eccentricity of the inner side of the peripheral wall 18 of the pump housing 10.
  • the center M of the annular groove 138 is seen in the direction of rotation 21 of the rotor 20 between the suction groove 30 and the pressure groove 34 lying portion of the peripheral wall 18 out with respect to the axis of rotation 13 arranged offset.
  • the radial extent s1 of the sealing region 139 within the annular groove 138 toward the drive shaft 12 on the side toward which the midpoint M is offset with respect to the axis of rotation 13 increases during the radial extent s2 of the sealing region 139 the opposite side is reduced.
  • annular groove 138 is not circular, but has an eccentric course with respect to the axis of rotation 13, wherein the radial extent s1 of Sealing region 139 in a region in the direction of rotation 21 of the rotor 20 between the suction groove 30 and the pressure groove 34 is greater than the radial extent s2 of the sealing region 139 in the opposite region.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Claims (6)

  1. Pompe rotative à ailettes comprenant un boîtier de pompe (10) dans lequel est disposé un rotor (20) entraîné en rotation par un arbre d'entraînement (12), le rotor (20) présentant plusieurs rainures (24) réparties sur sa périphérie, lesquelles s'étendent au moins essentiellement radialement par rapport à l'axe de rotation (13) du rotor (20) et dans lesquelles est guidé, de manière coulissante, à chaque fois un élément de refoulement (26) en forme d'ailette, avec une paroi périphérique (18) du boîtier de pompe (10) s'étendant de manière excentrique par rapport à son axe de rotation (13) et entourant le rotor (20), au niveau de laquelle paroi périphérique s'appliquent les éléments de refoulement (26) avec leurs extrémités radialement extérieures, avec des parois frontales de boîtier (14, 16) du boîtier de pompe (10) adjacentes au rotor (20) dans la direction de son axe de rotation (13), un fluide étant refoulé par les éléments de refoulement (26) lors du mouvement de rotation du rotor (20) depuis une région d'aspiration (28, 30) jusqu'à une région de pression (32, 34) décalée par rapport à la région d'aspiration dans la direction de rotation (21) du rotor (20), une rainure de forme annulaire (38 ; 138) s'étendant au moins sur une partie de la périphérie du rotor (20) étant prévue dans au moins l'une des parois frontales de boîtier (14, 16), laquelle rainure est opposée aux régions intérieures (25) limitées par les éléments de refoulement (26) dans les rainures (24) du rotor (20), la rainure de forme annulaire étant réalisée sous forme de rainure annulaire (38 ; 138) s'étendant sur toute la périphérie du rotor (20), la rainure annulaire (38 ; 138) étant connectée à la région de pression (32, 34) par le biais d'une rainure de liaison (40) dans la paroi frontale de boîtier (14, 16), et la rainure de liaison (40) s'étendant radialement vers l'intérieur vers la rainure annulaire (38 ; 138) depuis la région de pression (32, 34) dans la direction de rotation (21) du rotor (20), caractérisée en ce que la rainure de liaison (40) est courbe, de préférence s'étendant avec une courbure de forme hélicoïdale.
  2. Pompe rotative à ailettes selon la revendication 1, caractérisée en ce que la rainure de liaison (40) débouche au moins approximativement tangentiellement dans la rainure annulaire (38 ; 138) et/ou dans une rainure de pression (34) courbe, disposée dans la région de pression.
  3. Pompe rotative à ailettes selon la revendication 2, caractérisée en ce que la rainure de liaison (40) débouche dans la région d'extrémité de la rainure de pression (34) tournée à l'opposé de la direction de rotation (21) du rotor (20).
  4. Pompe rotative à ailettes selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la rainure annulaire (138) s'étend de manière excentrique par rapport à l'axe de rotation (13) du rotor (20).
  5. Pompe rotative à ailettes selon la revendication 4, caractérisée en ce que la rainure annulaire (138) s'étend au moins approximativement sous forme circulaire et en ce que son centre (M) est disposé par rapport à l'axe de rotation (13) du rotor (20) de manière décalée par rapport à une région de la paroi périphérique (18) du boîtier de pompe (10), laquelle est située dans la direction de rotation (21) du rotor (20) entre la région d'aspiration (28, 30) et la région de pression (32, 34).
  6. Pompe rotative à ailettes selon la revendication 4, caractérisée en ce que la rainure annulaire (138), dans une région périphérique qui se situe dans la direction de rotation (21) du rotor (20) entre la région d'aspiration (28, 30) et la région de pression (32, 34), s'étend à une plus grande distance radiale de l'axe de rotation (13) du rotor (20) que dans la région périphérique opposée.
EP05813372A 2004-12-16 2005-11-16 Pompe rotative a ailettes Not-in-force EP1828609B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004060554A DE102004060554A1 (de) 2004-12-16 2004-12-16 Flügelzellenpumpe
PCT/EP2005/056012 WO2006063913A1 (fr) 2004-12-16 2005-11-16 Pompe rotative a ailettes

Publications (2)

Publication Number Publication Date
EP1828609A1 EP1828609A1 (fr) 2007-09-05
EP1828609B1 true EP1828609B1 (fr) 2013-03-27

Family

ID=35788642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05813372A Not-in-force EP1828609B1 (fr) 2004-12-16 2005-11-16 Pompe rotative a ailettes

Country Status (6)

Country Link
US (1) US7878779B2 (fr)
EP (1) EP1828609B1 (fr)
JP (1) JP2008524485A (fr)
CN (1) CN101080572A (fr)
DE (1) DE102004060554A1 (fr)
WO (1) WO2006063913A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005047175A1 (de) 2005-09-30 2007-04-05 Robert Bosch Gmbh Flügelzellenpumpe
CN101581301B (zh) * 2009-06-15 2014-02-05 胡东文 一种叶片泵/马达
CN102072148B (zh) * 2009-11-25 2015-03-25 博世汽车柴油系统有限公司 叶片泵
US20120045355A1 (en) * 2010-08-17 2012-02-23 Paul Morton Variable displacement oil pump
GB2486007B (en) * 2010-12-01 2017-05-10 Itt Mfg Enterprises Inc Sliding vane pump
US9593681B2 (en) 2011-11-04 2017-03-14 CONTINTENTAL AUTOMOTIVE GmbH Pump device for delivering a medium
US9605673B2 (en) * 2013-10-17 2017-03-28 Tuthill Corporation Pump with pivoted vanes
JP7243528B2 (ja) * 2019-08-29 2023-03-22 株式会社デンソー ベーンポンプ
DE102019127389A1 (de) * 2019-10-10 2021-04-15 Schwäbische Hüttenwerke Automotive GmbH Flügelzellenpumpe

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
GB186271A (en) 1921-11-23 1922-09-28 John Alexander Mair Improvements in rotary pumps
US2004958A (en) * 1931-08-22 1935-06-18 Mitchell Bryce Rotary pump
US2423271A (en) * 1942-09-11 1947-07-01 Frank A Talbot Rotary motor, pump, and the like
US2544987A (en) 1947-01-04 1951-03-13 Vickers Inc Power transmission
US2653550A (en) 1950-10-07 1953-09-29 Vickers Inc Power transmission
US3574493A (en) 1969-04-21 1971-04-13 Abex Corp Vane-type pumps
US4455129A (en) 1981-05-19 1984-06-19 Daikin Kogyo Co., Ltd. Multi-vane type compressor
JPS63167089A (ja) 1986-12-27 1988-07-11 Kayaba Ind Co Ltd ベ−ンポンプ
JPS63280883A (ja) 1987-05-14 1988-11-17 Toyota Autom Loom Works Ltd 可変容量型ベ−ン圧縮機
JPH01155096A (ja) 1987-12-10 1989-06-16 Suzuki Motor Co Ltd ベーン型回転圧縮機
US5265457A (en) 1990-02-16 1993-11-30 Sumitomo Electric Industries, Ltd. Method of forming an oil groove on the end surface of a rotor of an aluminum alloy
JPH0469686U (fr) 1990-10-25 1992-06-19
US5147183A (en) * 1991-03-11 1992-09-15 Ford Motor Company Rotary vane pump having enhanced cold start priming
DE19529806C2 (de) 1995-08-14 1999-04-01 Luk Fahrzeug Hydraulik Flügelzellenpumpe
DE19952167A1 (de) 1998-12-24 2000-06-29 Mannesmann Rexroth Ag Pumpenanordnung mit zwei Hydropumpen
DE102005047175A1 (de) 2005-09-30 2007-04-05 Robert Bosch Gmbh Flügelzellenpumpe

Also Published As

Publication number Publication date
CN101080572A (zh) 2007-11-28
US7878779B2 (en) 2011-02-01
EP1828609A1 (fr) 2007-09-05
JP2008524485A (ja) 2008-07-10
US20090291010A1 (en) 2009-11-26
WO2006063913A1 (fr) 2006-06-22
DE102004060554A1 (de) 2006-06-22

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