WO2019063089A1 - Rotary vane pump with variable conveying quantity - Google Patents

Rotary vane pump with variable conveying quantity Download PDF

Info

Publication number
WO2019063089A1
WO2019063089A1 PCT/EP2017/074763 EP2017074763W WO2019063089A1 WO 2019063089 A1 WO2019063089 A1 WO 2019063089A1 EP 2017074763 W EP2017074763 W EP 2017074763W WO 2019063089 A1 WO2019063089 A1 WO 2019063089A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor member
inner rotor
vane pump
rotary vane
eccentric ring
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.)
Ceased
Application number
PCT/EP2017/074763
Other languages
French (fr)
Inventor
Raffaele Squarcini
Emanuele PELLEGRINI
Antonio DIPACE
Carlo Pachetti
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.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Priority to DE112017008103.3T priority Critical patent/DE112017008103T5/en
Priority to PCT/EP2017/074763 priority patent/WO2019063089A1/en
Publication of WO2019063089A1 publication Critical patent/WO2019063089A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F04C2/348—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 vanes positively engaging, with circumferential play, an outer rotatable member
    • 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
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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

Definitions

  • the invention relates to a rotary vane pump with variable conveying quantity, said rotary vane pump comprising a housing arrangement which encloses a housing chamber having arranged therein a displaceable eccentric ring accommodating an inner rotor member that is rotatable relative to the eccentric ring and that is supported in the housing arrangement to be driven by drive means via a rotary axis, wherein the inner rotor member comprises slits in which vane elements are displaceably supported, wherein a cover element is provided for closure of the housing chamber and wherein the housing arrangement has an inlet opening and an outlet opening provided in it.
  • a rotary vane pump of this type is known e.g. from Japanese Laid-open Patent Application JP 2007-309249 A.
  • Such pumps which are also referred to as cell pumps, serve e.g. for the conveyance of lubricant for an internal combustion machine.
  • the ends of the vane elements supported within the inner rotor member are in abutment on the inner sides of the eccentric ring and in this manner enclose a plurality of pump chambers. Via an inlet opening, lubricant will be sucked in, be condensed within the pump chambers and then, via an outlet opening, be supplied to corresponding consumers.
  • an outer rotor member is provided which on its inner side is engaged by the vane elements so as to enclose pump chambers, wherein the outer rotor member is coupled via a coupling arrangement to the inner rotor member in a torsionally rigid manner while, however, being displaceable in radial direction. Since no relative movement will take place anymore between the inner rotor member and the outer rotor member, the vane element will not be subjected to forces and wear anymore so that the mutual sealing of the pump chambers is guaranteed over the entire operational life of the rotary vane pump.
  • the outer rotor member is cup- shaped, wherein a bottom member is facing toward the cover element and comprises a coupling member recess having arranged in it a coupling member comprising an inner rotor member recess which is engaged by an inner rotor hub.
  • the coupling member recess is cross-shaped (other designs are admissible) and the inner rotor member recess is of a rectangular shape, wherein the inner rotor hub is designed as a feather key.
  • the coupling arrangement is designed in analogy to the principle of a per se known Oldham coupling.
  • the inner rotor hub can be integrally connected to the inner rotor member.
  • Figure 1 is a plan view of a schematically represented rotary vane pump in its opened state
  • Figure 2 is an exploded view of the rotary vane pump of Figure 1.
  • a rotary vane pump 2 according to the invention is shown in plan view in schematic representation.
  • the rotary vane pump 2 comprises, in a known manner, a housing arrangement 4 enclosing a housing chamber 6.
  • a hydraulica!ly displaceable eccentric ring 8 is arranged which in a known manner is kept subjected to a bias by a spring 10.
  • the eccentric ring 8 has been pressed into its maximum possible eccentricity relative to a center 11 of an inner rotor member 12.
  • a rotary axis 14 of the inner rotor member 12 via which the inner rotor member 12 is driven in a known manner by a drive means, not specifically illustrated.
  • This drive means can be both an electric motor and e.g. a toothed wheel, wherein, in the latter case, the toothed wheel is in turn coupled to a crankshaft.
  • the rotary axis 14 is supported in the housing arrangement 4 in a non-displaceable manner.
  • eight displaceably arranged vane elements 18 are provided in eight radially extending silts 16, which vane elements 18 are biased by means of a spring ring (not shown) in the direction of an outer rotor member 22 and engage an inner side 24 of outer rotor member 22 in such a manner that pump chambers 26 are formed between respectively two vane elements 18.
  • housing arrangement 4 an inlet opening 28 and an outlet opening 30 for lubricant are provided in a known manner.
  • a coupling arrangement 32 shown in Figure 2, the outer rotor member 22 is coupled to the inner rotor member 12 in a torsionaily rigid manner so that no relative movement can take place anymore between the vane elements 18 and the inner side 24 of the outer rotor member 22.
  • the rotary vane pump 2 from Figure 1 is shown in perspective exploded view.
  • Designated by 34 herein is a base portion of housing arrangement 4, in which a support site 36 for rotary axis 14 as well as the inlet opening 28 and the outlet opening 30 are arranged. Further shown are the housing chamber 6 and bores 38 for connection to a cover element 40.
  • the inner rotor member 12 is supported at the support site 36 by means of the rotary axis 14 in non-rotatabie manner.
  • the spring ring (not shown) Is arranged.
  • the inner rotor member comprises, on the side facing away from base portion 34, an inner rotor hub 42 which in the present exemplary embodiment is realized as a feather key and is integrally connected to the inner rotor member 12.
  • An inner rotor hub 42 is a part of the coupling arrangement 32 which is already mentioned in the context of the description of Figure 1.
  • Reference numeral 8 designates, as already described In connection with Figure 1, the eccentric ring which in a known manner is inserted into the base portion 34 of housing arrangement 4.
  • the outer rotor member 22 is placed which on its inner side 24 is engaged by the vane elements 18 of inner rotor member 12.
  • the outer rotor member 22 is cup-shaped and comprises a bottom portion 44 which faces toward cover element 40 and has a cross-shaped coupling member recess 46 that, together with a coupling member 48 and the inner rotor hub 42, forms a part of the coupling arrangement 32.
  • the coupling member 48 which itself comprises a rectangular inner rotor member recess 50, is insertable into the cross- shaped coupling member recess 46, wherein the inner rotor member recess 50 is engaged by the inner rotor hub 42 for rotary force transmission.
  • the cross-shaped recess 46 of outer rotor member 22 is dimensioned larger in such a manner that mutually intersecting legs 52, 54 of coupling member 48 can be displaced within recess 46 according to the principle of an Oldham coupling.
  • the rotary vane pump is sealed off e.g. with the aid of screws which engage into the bores 38 of base portion 34 via through bores 56 of cover element 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Abstract

A rotary vane pump with variable conveying quantity, comprising a housing arrangement (4) which encloses a housing chamber (6) having arranged therein a displaceable eccentric ring (8) accommodating an inner rotor member (12) that is rota table relative to the eccentric ring (8) and that is supported in the housing arrangement (4) to be driven by drive means via a rotary axis (14), wherein the inner rotor member (12) comprises slits (16) having vane elements (18) displaceably supported in them, wherein a cover element (40) is provided for closure of the housing chamber (6) and wherein the housing arrangement (4) has an inlet opening (28) and an outlet opening (30) provided in it, wherein, in the housing chamber (6), between the eccentric ring (8) and the inner rotor member (12), an outer rotor member (22) is provided which on its inner side (24) is engaged by the vane elements (18) so as to enclose pump chambers (26), wherein the outer rotor member (22) is coupled via a coupling arrangement (32) to the inner rotor member (12) in a torsionally rigid manner while, however, being displaceable in radial direction.

Description

D E S C R I P T I O N Rotary wane pump with variable conveying quantity
The invention relates to a rotary vane pump with variable conveying quantity, said rotary vane pump comprising a housing arrangement which encloses a housing chamber having arranged therein a displaceable eccentric ring accommodating an inner rotor member that is rotatable relative to the eccentric ring and that is supported in the housing arrangement to be driven by drive means via a rotary axis, wherein the inner rotor member comprises slits in which vane elements are displaceably supported, wherein a cover element is provided for closure of the housing chamber and wherein the housing arrangement has an inlet opening and an outlet opening provided in it.
A rotary vane pump of this type is known e.g. from Japanese Laid-open Patent Application JP 2007-309249 A. Such pumps, which are also referred to as cell pumps, serve e.g. for the conveyance of lubricant for an internal combustion machine. In this respect, in the state of the art, the ends of the vane elements supported within the inner rotor member are in abutment on the inner sides of the eccentric ring and in this manner enclose a plurality of pump chambers. Via an inlet opening, lubricant will be sucked in, be condensed within the pump chambers and then, via an outlet opening, be supplied to corresponding consumers. The higher the eccentricity of the eccentric ring relative to the inner rotor member is, the larger will be the condensation effected by the inner rotor member moving relative to the eccentric ring. A disadvantage of this known rotary vane pump resides in that, due to the relative movement of the inner rotor member with respect to the eccentric ring, the inner surface of the eccentric ring and respectively the ends of the vane elements are subjected to considerable forces and wear, which can leadto fatique fracture of pump parts. Furthermore it may have the consequence that the chambers will not be entirely sealed anymore relative to each other and, as a result, an optimal condensation will not be possible anymore.
Thus, it is an object of the invention to provide a rotary vane pump in which the above disadvantage is avoided in a simple and inexpensive manner.
This object is achieved in that, in the housing chamber, between the eccentric ring and the inner rotor member, an outer rotor member is provided which on its inner side is engaged by the vane elements so as to enclose pump chambers, wherein the outer rotor member is coupled via a coupling arrangement to the inner rotor member in a torsionally rigid manner while, however, being displaceable in radial direction. Since no relative movement will take place anymore between the inner rotor member and the outer rotor member, the vane element will not be subjected to forces and wear anymore so that the mutual sealing of the pump chambers is guaranteed over the entire operational life of the rotary vane pump.
In a particularly advantageous manner, the outer rotor member is cup- shaped, wherein a bottom member is facing toward the cover element and comprises a coupling member recess having arranged in it a coupling member comprising an inner rotor member recess which is engaged by an inner rotor hub. Herein, it is particularly advantageous if the coupling member recess is cross-shaped (other designs are admissible) and the inner rotor member recess is of a rectangular shape, wherein the inner rotor hub is designed as a feather key. In this case, the coupling arrangement is designed in analogy to the principle of a per se known Oldham coupling.
According to a further advantageous embodiment of the invention, the inner rotor hub can be integrally connected to the inner rotor member.
The invention will be explained in greater detail hereunder with reference to a drawing wherein: Figure 1 is a plan view of a schematically represented rotary vane pump in its opened state, and
Figure 2 is an exploded view of the rotary vane pump of Figure 1.
In Figure 1, a rotary vane pump 2 according to the invention is shown in plan view in schematic representation. The rotary vane pump 2 comprises, in a known manner, a housing arrangement 4 enclosing a housing chamber 6. In this housing chamber 6, a hydraulica!ly displaceable eccentric ring 8 is arranged which in a known manner is kept subjected to a bias by a spring 10. In the present view, the eccentric ring 8 has been pressed into its maximum possible eccentricity relative to a center 11 of an inner rotor member 12. By the chain-dotted line, there is schematically marked a rotary axis 14 of the inner rotor member 12 via which the inner rotor member 12 is driven in a known manner by a drive means, not specifically illustrated. This drive means can be both an electric motor and e.g. a toothed wheel, wherein, in the latter case, the toothed wheel is in turn coupled to a crankshaft. Herein, the rotary axis 14 is supported in the housing arrangement 4 in a non-displaceable manner. In the present exemplary embodiment, internally of inner rotor member 12, eight displaceably arranged vane elements 18 are provided in eight radially extending silts 16, which vane elements 18 are biased by means of a spring ring (not shown) in the direction of an outer rotor member 22 and engage an inner side 24 of outer rotor member 22 in such a manner that pump chambers 26 are formed between respectively two vane elements 18. Further, in housing arrangement 4, an inlet opening 28 and an outlet opening 30 for lubricant are provided in a known manner. By way of a coupling arrangement 32, shown in Figure 2, the outer rotor member 22 is coupled to the inner rotor member 12 in a torsionaily rigid manner so that no relative movement can take place anymore between the vane elements 18 and the inner side 24 of the outer rotor member 22. In Figure 2, the rotary vane pump 2 from Figure 1 is shown in perspective exploded view. Designated by 34 herein is a base portion of housing arrangement 4, in which a support site 36 for rotary axis 14 as well as the inlet opening 28 and the outlet opening 30 are arranged. Further shown are the housing chamber 6 and bores 38 for connection to a cover element 40.
The inner rotor member 12 is supported at the support site 36 by means of the rotary axis 14 in non-rotatabie manner. Within the inner rotor member 12, the spring ring (not shown) Is arranged. Further, the inner rotor member comprises, on the side facing away from base portion 34, an inner rotor hub 42 which in the present exemplary embodiment is realized as a feather key and is integrally connected to the inner rotor member 12. An inner rotor hub 42 is a part of the coupling arrangement 32 which is already mentioned in the context of the description of Figure 1. Reference numeral 8 designates, as already described In connection with Figure 1, the eccentric ring which in a known manner is inserted into the base portion 34 of housing arrangement 4. Between the eccentric ring 8 and the inner rotor member 12, the outer rotor member 22 is placed which on its inner side 24 is engaged by the vane elements 18 of inner rotor member 12. In the present exemplary embodiment, the outer rotor member 22 is cup-shaped and comprises a bottom portion 44 which faces toward cover element 40 and has a cross-shaped coupling member recess 46 that, together with a coupling member 48 and the inner rotor hub 42, forms a part of the coupling arrangement 32. The coupling member 48, which itself comprises a rectangular inner rotor member recess 50, is insertable into the cross- shaped coupling member recess 46, wherein the inner rotor member recess 50 is engaged by the inner rotor hub 42 for rotary force transmission. In this arrangement, the cross-shaped recess 46 of outer rotor member 22 is dimensioned larger in such a manner that mutually intersecting legs 52, 54 of coupling member 48 can be displaced within recess 46 according to the principle of an Oldham coupling. Thereby, it is possible to realize the eccentricity - shown in Figure 1 - of the outer rotor member 22 relative to the inner rotor member 12. The rotary vane pump is sealed off e.g. with the aid of screws which engage into the bores 38 of base portion 34 via through bores 56 of cover element 40.

Claims

C L A I M S
1. A rotary vane pump with variable conveying quantity, said rotary vane pump comprising a housing arrangement (4) which encloses a housing chamber (6) having arranged therein a displaceable eccentric ring (8) accommodating an inner rotor member (12) that is rotatable relative to the eccentric ring (8) and that is supported in the housing arrangement (4) to be driven by drive means via a rotary axis (14), wherein the Inner rotor member (12) comprises slits (16) having vane elements (18) displaceably supported in them, wherein a cover element (40) is provided for closure of the housing chamber (6) and wherein the housing arrangement (4) has an inlet opening (28) and an outlet opening (30) provided in it,
characterized in that,
in the housing chamber (6), between the eccentric ring (8) and the inner rotor member (12), an outer rotor member (22) is provided which on its inner side (24) is engaged by the vane elements (18) so as to enclose pump chambers (26), wherein the outer rotor member (22) is coupled via a coupling arrangement (32) to the inner rotor member (12) In a torsionally rigid manner while, however, being displaceable in radial direction.
2. The rotary vane pump according to claim 1,
characterized in that
the outer rotor member (22) is cup-shaped, wherein a bottom member (44) is facing toward the cover element (40) and comprises a coupling member recess (46) having arranged in it a coupling member (48) comprising an inner rotor member recess (50) engaged by an inner rotor hub (42).
3. The rotary vane pump according to claim 2,
characterized in that the coupling member recess (46) is cross-shaped and the inner rotor member recess (50) is of a rectangular shape, wherein the inner rotor hub (42) Is designed as a feather key.
4. The rotary vane pump according to claim 2,
characterized in that
the inner rotor hub (42) is integrally connected to the inner rotor member (12),
PCT/EP2017/074763 2017-09-29 2017-09-29 Rotary vane pump with variable conveying quantity Ceased WO2019063089A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112017008103.3T DE112017008103T5 (en) 2017-09-29 2017-09-29 Rotary vane pump with variable delivery rate
PCT/EP2017/074763 WO2019063089A1 (en) 2017-09-29 2017-09-29 Rotary vane pump with variable conveying quantity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/074763 WO2019063089A1 (en) 2017-09-29 2017-09-29 Rotary vane pump with variable conveying quantity

Publications (1)

Publication Number Publication Date
WO2019063089A1 true WO2019063089A1 (en) 2019-04-04

Family

ID=60051498

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/074763 Ceased WO2019063089A1 (en) 2017-09-29 2017-09-29 Rotary vane pump with variable conveying quantity

Country Status (2)

Country Link
DE (1) DE112017008103T5 (en)
WO (1) WO2019063089A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3103230A1 (en) * 2019-11-20 2021-05-21 Renault S.A.S. Modulated flow vane pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6135742A (en) * 1998-08-28 2000-10-24 Cho; Bong-Hyun Eccentric-type vane pump
JP2007309249A (en) 2006-05-19 2007-11-29 Hitachi Ltd Variable displacement vane pump
DE102011000533A1 (en) * 2011-02-07 2012-08-09 Zf Lenksysteme Gmbh Variable displacement pump for steering system of motor vehicles, has rotor elements that coincide with point contact, which are made to abut against sintered cam track
WO2014077835A1 (en) * 2012-11-16 2014-05-22 Moog Inc. Vane pumps and methods of operating same
WO2017109606A1 (en) * 2015-12-23 2017-06-29 Vhit S.P.A. Positive displacement vane pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6135742A (en) * 1998-08-28 2000-10-24 Cho; Bong-Hyun Eccentric-type vane pump
JP2007309249A (en) 2006-05-19 2007-11-29 Hitachi Ltd Variable displacement vane pump
DE102011000533A1 (en) * 2011-02-07 2012-08-09 Zf Lenksysteme Gmbh Variable displacement pump for steering system of motor vehicles, has rotor elements that coincide with point contact, which are made to abut against sintered cam track
WO2014077835A1 (en) * 2012-11-16 2014-05-22 Moog Inc. Vane pumps and methods of operating same
WO2017109606A1 (en) * 2015-12-23 2017-06-29 Vhit S.P.A. Positive displacement vane pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3103230A1 (en) * 2019-11-20 2021-05-21 Renault S.A.S. Modulated flow vane pump

Also Published As

Publication number Publication date
DE112017008103T5 (en) 2020-07-02

Similar Documents

Publication Publication Date Title
US10533550B2 (en) Electric oil pump, in particular for a motor vehicle
US20020068001A1 (en) Rotary hydraulic vane pump with improved undervane porting
US10041491B2 (en) Vane pump containing a back pressure introduction passage
CN111492143A (en) Cycloidal rotor pump and manufacturing method thereof
RU2012107225A (en) GEAR PUMP
US9638036B2 (en) Scroll compressor including oldham coupling having keys that are slidingly received in slots of a non-orbiting scroll and/or an orbiting scroll
CN100580253C (en) Vane pump
JP2020501057A (en) Vane pump with one or more weak vanes
CN101925744A (en) Rotary fluid machine
KR102368278B1 (en) Vacuum Pump with eccentrically driven vane (eccentric pump design)
CN114123595A (en) Pump-motor unit comprising an integrated housing cover
EP3350447B1 (en) Multi-vane impeller device
WO2019063089A1 (en) Rotary vane pump with variable conveying quantity
JP6817891B2 (en) Cartridge type vane pump and pump device
JP2008524486A (en) Vane pump
US10683864B2 (en) Twin vane rotary vacuum pump
JPH0286976A (en) Scroll hydraulic machine
JP2009510311A (en) Vane pump
JP2017534799A (en) Rotating fluid pressure device with drive-in-drive valve device
US20140294650A1 (en) Vane pump
CN101087959B (en) Variable delivery vane oil pump
US20130170971A1 (en) Peripheral pump
JP2014070545A (en) Variable displacement vane pump
US20220170458A1 (en) Cartridge vane pump and pump device
US6116878A (en) Oil pump apparatus

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17781442

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17781442

Country of ref document: EP

Kind code of ref document: A1