EP1828611B1 - Pompe a palettes coulissantes - Google Patents

Pompe a palettes coulissantes Download PDF

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Publication number
EP1828611B1
EP1828611B1 EP05826789A EP05826789A EP1828611B1 EP 1828611 B1 EP1828611 B1 EP 1828611B1 EP 05826789 A EP05826789 A EP 05826789A EP 05826789 A EP05826789 A EP 05826789A EP 1828611 B1 EP1828611 B1 EP 1828611B1
Authority
EP
European Patent Office
Prior art keywords
rotor
annular groove
region
grooves
housing end
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
EP05826789A
Other languages
German (de)
English (en)
Other versions
EP1828611A1 (fr
Inventor
Christian Langenbach
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 EP1828611A1 publication Critical patent/EP1828611A1/fr
Application granted granted Critical
Publication of EP1828611B1 publication Critical patent/EP1828611B1/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, as in JP 63-280 883 and JP 60-150496 disclosed.
  • 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.
  • the annular groove is arranged concentrically to the axis of rotation of the rotor, so that the sealing region has a constant radial extent.
  • a disadvantage of this known vane pump that is 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 only a small contact pressure of the wing at the peripheral wall results.
  • leakage of pressurized medium from the annular groove to the drive shaft may occur through the sealing area.
  • the vane pump according to the invention with the features of claim 1 has the advantage that the pressurization of the inner regions of the grooves of the rotor is reinforced by extending over the entire circumference of the rotor annular groove.
  • the eccentricity of the annular groove with respect to the axis of rotation of Rotor allows a targeted increase in the radial extent of the sealing area in a peripheral region of the rotor, whereby the leakage from the annular groove can be reduced.
  • FIG. 1 a vane pump in a simplified representation in a cross section along line II in FIG. 3 .
  • FIG. 2 the vane pump in a cross section along line II-II in FIG. 3 and
  • FIG. 3 the vane pump in a longitudinal section along line III-III in FIG. 1 ,
  • a vane pump is shown, which is preferably provided for conveying fuel, in particular diesel fuel.
  • 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, through which in the axial direction, that is, in the direction of the axis of rotation 13 of the drive shaft 12, a pump chamber is limited. 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 which is rotatably connected to the drive shaft 12, for example via a groove / spring 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 24.
  • 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.
  • a radially inner interior 25 is limited in the respective 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 provided, in which at least one suction opening 28 opens.
  • In the suction region is preferably formed 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 30 into 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 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 ,
  • At least one housing end wall 14,16 is as in FIG. 2 illustrated an extending over the entire circumference of the rotor 20 extending annular groove 38 which is connected to the pressure groove 34 via a connecting groove 40.
  • the connecting groove 40 may also be provided a connecting hole.
  • 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. In the area around the drive shaft 12, only a slight pressure prevails, so that there is a pressure gradient between the annular groove 38 and the area around the drive shaft 12.
  • the annular groove 38 extends eccentrically to the axis of rotation 13 of the rotor 20, so that the radial extent s of the sealing region 39 is variable over the circumference of the annular groove 38.
  • the annular groove 38 may, for example, extend at least approximately circular, wherein this has a center M which is arranged offset with respect to the axis of rotation 13 of the rotor 20 about a distance e forming the eccentricity.
  • the eccentricity e of the annular groove 38 is at least approximately the same size and in the same direction as the eccentricity of the inside 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 39 within the annular groove 38 toward the drive shaft 12 on the side toward which the midpoint M is offset with respect to the rotational axis 13 increases during the radial extent s2 of the sealing region 39 the opposite side is reduced.
  • annular groove 38 is not circular, but has an eccentric course with respect to the axis of rotation 13, wherein the radial extent s1 of the sealing area 39 in a region in the direction of rotation 21 of the rotor 20 between the suction 30 and the pressure groove 34th is greater than the radial extent s2 of the sealing region 39 in the opposite region.
  • the connecting groove 40 may extend, for example radially or inclined to a radial with respect to the axis of rotation 13 of the pressure groove 34 inwardly.
  • the connecting groove 40 can, in particular, run in such a way that it approaches the annular groove 38 in the direction of rotation 21 of the rotor 20.
  • the connecting groove 40 can extend 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.
  • a drag flow is additionally generated in the rotary movement of the rotor 20 in this, which leads to a further pressure increase in the annular groove 38 and thus the grooves 24, whereby the contact pressure of the wings 26 is further increased to the peripheral wall 18 ,
  • a pressure build-up in the annular groove 38 already takes place when the vane pump starts, so that the vaporizer pump already delivers a sufficient amount of fuel when it starts up.
  • the curved course of the connecting groove 40 also ensures that the wings 26 move approximately tangentially over the connecting groove 40 during the rotational movement of the rotor 20, whereby the wear of the wings 26 and the housing end wall 14,16 is kept low.
  • 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 part 14 or 16.
  • the suction opening 28 and the pressure port 32 is provided only in a housing end wall 14 or 16, wherein in a housing end wall 14, the suction port 28 is provided and in the other housing wall 16, the pressure port 32 is provided.
  • the rotor 20 and the wings 26 are loaded in the axial direction on both sides at least approximately equal, so that no or only one low resultant force on the rotor 20 and the wings 26 in the direction of the axis of rotation 13 acts.
  • the depth of the annular groove 38 and the connecting groove 40 in the housing end wall 14,16 for example, between 0.1 and 2mm, preferably the width of the grooves 38,40 is greater than the depth.

Landscapes

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

Claims (5)

  1. Pompe alvéolaire à palettes comportant un boîtier de pompe (10) logeant un rotor (20) entraîné en rotation par un arbre d'entraînement (12),
    le rotor (20) comportant plusieurs rainures (24) réparties sur sa périphérie, ces rainures étant pratiquement dirigées radialement par rapport à l'axe de rotation (13) du rotor (20) et elles reçoivent chacune un élément de refoulement (26) en forme de palette, guidé en coulissement, et une paroi périphérique (18) du boîtier de pompe (10), cette paroi entourant le rotor (20) en étant excentrée par rapport à son axe de rotation (13), paroi contre laquelle les éléments de refoulement (26) s'appuient par leur extrémité radiale extérieure,
    avec des parois frontales (14, 16) du boîtier de pompe (10) étant adjacentes au rotor (20) dans la direction de son axe de rotation (13), et
    lors du mouvement de rotation du rotor (20), les éléments de refoulement (26) refoulent le fluide d'une zone d'aspiration (28, 30) vers une zone de pression (32, 34) décalée de cette zone dans le sens de rotation (21) du rotor (20),
    dans au moins l'une des parois frontales du boîtier (14, 16), une rainure annulaire (38) s'étend au moins sur une partie de la périphérie du rotor (20), cette rainure étant en regard des zones intérieures (25) délimitées par les éléments de refoulement (26) dans les rainures (24) du rotor (20) et elle forme une zone d'étanchéité (39) entre ces zones intérieures et l'arbre d'entraînement (12),
    la rainure annulaire étant réalisée sous la forme d'une rainure annulaire (38) s'étendant sur toute la périphérie du rotor (20),
    la rainure annulaire (38) communiquant avec la zone de pression (32, 34) par une rainure de liaison (40) réalisée dans la paroi frontale du boîtier (14, 16),
    caractérisée en ce que
    la rainure annulaire (38) est excentrée par rapport à l'axe de rotation (13) du rotor (20).
  2. Pompe alvéolaire à palette selon la revendication 1,
    caractérisée en ce que
    la rainure annulaire (38) a au moins sensiblement une forme circulaire et son centre (M) est décalé par rapport à l'axe de rotation (13) du rotor (20), vers une zone de la paroi périphérique (18) du boîtier de pompe (10) qui se situe entre la zone d'aspiration (28, 30) et la zone de pression (32, 34) dans le sens de rotation (21) du rotor (20).
  3. Pompe alvéolaire à palette selon la revendication 1,
    caractérisée en ce que
    la rainure annulaire (38) se situe dans une zone périphérique entre la zone d'aspiration (28, 30) et la zone de pression (32, 34) selon le sens de rotation du rotor (20), avec une distance radiale plus grande par rapport à l'axe de rotation (13) du rotor (20) que dans la zone périphérique opposée.
  4. Pompe alvéolaire à palette selon la revendication 1,
    caractérisée en ce que
    la rainure annulaire (38) est dirigée de façon à suivre au moins sensiblement la course des palettes (26) dans les rainures (24) du rotor (20) au cours de leur mouvement de rotation.
  5. Pompe alvéolaire à palette selon l'une des revendications précédentes,
    caractérisée en ce que
    l'excentricité (e) de la rainure annulaire (38) est au moins sensiblement égale et de même sens que l'excentricité de la paroi périphérique (18) du boîtier de pompe (10).
EP05826789A 2004-12-16 2005-11-21 Pompe a palettes coulissantes Not-in-force EP1828611B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004060551A DE102004060551A1 (de) 2004-12-16 2004-12-16 Flügelzellenpumpe
PCT/EP2005/056088 WO2006063917A1 (fr) 2004-12-16 2005-11-21 Pompe a palettes coulissantes

Publications (2)

Publication Number Publication Date
EP1828611A1 EP1828611A1 (fr) 2007-09-05
EP1828611B1 true EP1828611B1 (fr) 2008-09-10

Family

ID=35589620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05826789A Not-in-force EP1828611B1 (fr) 2004-12-16 2005-11-21 Pompe a palettes coulissantes

Country Status (7)

Country Link
US (1) US20090238707A1 (fr)
EP (1) EP1828611B1 (fr)
JP (1) JP2008524486A (fr)
CN (1) CN101080573A (fr)
AT (1) ATE408064T1 (fr)
DE (2) DE102004060551A1 (fr)
WO (1) WO2006063917A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048479A1 (de) 2009-10-07 2011-04-21 Volkswagen Ag Wärmekraftmaschine in Form eines Flügelzellenexpanders
JP5480730B2 (ja) * 2010-06-24 2014-04-23 宗司 中川 ベーン型内燃機関の気密構造
JP5865631B2 (ja) * 2011-08-23 2016-02-17 株式会社ショーワ ベーンポンプ
DE102011054028A1 (de) * 2011-09-29 2013-04-04 Zf Lenksysteme Gmbh Verdrängerpumpe
WO2013068531A2 (fr) 2011-11-11 2013-05-16 Dieter Brox Compresseur à palettes réglable
JP6023615B2 (ja) * 2013-03-13 2016-11-09 Ｋｙｂ株式会社 可変容量型ベーンポンプ
EP3056737B1 (fr) 2015-02-11 2017-11-15 Danfoss A/S Pompe à ailettes
JP2019019673A (ja) * 2017-07-11 2019-02-07 日立オートモティブシステムズ株式会社 ポンプ
BR112020014342A2 (pt) * 2018-02-06 2020-12-08 Schenck Process Europe Gmbh Sistema de fixação de uma vedação a uma lâmina de rotor de um dispositivo de alimentação rotativo de material solto e método para fixação de uma vedação a uma lâmina de rotor de um dispositivo de alimentação rotativo
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 (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423271A (en) * 1942-09-11 1947-07-01 Frank A Talbot Rotary motor, pump, and the like
JPS60150496A (ja) * 1984-01-18 1985-08-08 Hitachi Ltd 可動翼形圧縮機
US4958995A (en) * 1986-07-22 1990-09-25 Eagle Industry Co., Ltd. Vane pump with annular recesses to control vane extension
US4854830A (en) * 1987-05-01 1989-08-08 Aisan Kogyo Kabushiki Kaisha Motor-driven fuel pump
JPS63280883A (ja) * 1987-05-14 1988-11-17 Toyota Autom Loom Works Ltd 可変容量型ベ−ン圧縮機
US4872806A (en) * 1987-05-15 1989-10-10 Aisan Kogyo Kabushiki Kaisha Centrifugal pump of vortex-flow type
DE4442083C2 (de) * 1993-11-26 1998-07-02 Aisin Seiki Flügelzellenpumpe
DE19529806C2 (de) * 1995-08-14 1999-04-01 Luk Fahrzeug Hydraulik Flügelzellenpumpe
EP0851123B1 (fr) * 1996-12-23 2003-07-09 LuK Fahrzeug-Hydraulik GmbH & Co. KG Pompe à palettes
DE19710378C1 (de) * 1996-12-23 1998-03-12 Luk Fahrzeug Hydraulik Flügelzellenmaschine, insbesondere Flügelzellenpumpe
JP4193554B2 (ja) * 2003-04-09 2008-12-10 株式会社ジェイテクト ベーンポンプ

Also Published As

Publication number Publication date
DE102004060551A1 (de) 2006-06-22
WO2006063917A1 (fr) 2006-06-22
CN101080573A (zh) 2007-11-28
JP2008524486A (ja) 2008-07-10
US20090238707A1 (en) 2009-09-24
EP1828611A1 (fr) 2007-09-05
DE502005005361D1 (de) 2008-10-23
ATE408064T1 (de) 2008-09-15

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