WO2003081049A1 - Vacuum pump - Google Patents

Vacuum pump Download PDF

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Publication number
WO2003081049A1
WO2003081049A1 PCT/GB2003/001307 GB0301307W WO03081049A1 WO 2003081049 A1 WO2003081049 A1 WO 2003081049A1 GB 0301307 W GB0301307 W GB 0301307W WO 03081049 A1 WO03081049 A1 WO 03081049A1
Authority
WO
WIPO (PCT)
Prior art keywords
vane
rotor
chamber
centre
path
Prior art date
Application number
PCT/GB2003/001307
Other languages
French (fr)
Inventor
David Heaps
Original Assignee
Wabco Automotive Uk Limited
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 Wabco Automotive Uk Limited filed Critical Wabco Automotive Uk Limited
Priority to AU2003217031A priority Critical patent/AU2003217031A1/en
Publication of WO2003081049A1 publication Critical patent/WO2003081049A1/en

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
    • 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
    • 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
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • 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
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/21—Manufacture essentially without removing material by casting
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/22—Manufacture essentially without removing material by sintering
    • 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
    • F04C2250/00—Geometry
    • F04C2250/30—Geometry of the stator
    • F04C2250/301—Geometry of the stator compression chamber profile defined by a mathematical expression or by parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/90—Alloys not otherwise provided for
    • F05C2201/903—Aluminium alloy, e.g. AlCuMgPb F34,37
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the present invention relates to a vacuum pump and in particular, though not exclusively, to a vacuum pump for use in conjunction with a vehicle braking system.
  • a method of generating a profile of a chamber for a sliding vane vacuum pump comprising the steps of: providing a hypothetical vane having opposed endpoints and a centre midway between the endpoints, the endpoints representing the tips of a vane having a zero tip radius; providing an axis of rotation of a rotor adapted, in use, to rotate said vane within the chamber. providing a continuous path for the vane centre said path passing through the axis of rotation of the rotor; and incrementally moving the vane centre about the path and logging the positions of the vane endpoints to define a hypothetical chamber profile.
  • the method may advantageously include the further steps of: selecting a radius for the actual tips of the vane; and modifying the hypothetical chamber profile to take into account the actual radius of the vane tips to define an actual chamber profile.
  • the aforementioned vane centre path may be circular.
  • a vacuum pump comprising a casing defining a chamber, the chamber having a suction port and a vent port, a rotor rotatable in the chamber and a vane slidably supported by said rotor, said vane extending across the rotor and the axis of rotation thereof, wherein the centre of the vane, in use, moves along a path which passes through the rotational axis of the rotor.
  • the vane centre path is circular.
  • the present invention provides a chamber profile minimises rotor tip loading, in use.
  • the loads experienced by the rotor tips are sinusoidal. The rotor tips therefore do not experience sudden changes in load or shock loading.
  • Figure 1 shows a schematic side view of a vacuum pump according to the present invention
  • Figure 2 illustrates the path of the rotor vane
  • Figure 3 illustrates the generation of a casing profile
  • Figure 4 shows a plan view of a rotor casing according to the present invention.
  • FIG. 1 a schematic representation of a vacuum pump generally designated 10.
  • the pump 10 comprises a casing 12 having a suction port 14 and a vent port 16.
  • a rotor 18 and a vane 20 Within the casing there is provided a rotor 18 and a vane 20.
  • the vane 20 is slidably supported in a recess 22 of the rotor 18.
  • the vane 20 is provided with opposing tips 32, 34 adapted, in use, to provided a seal against the casing 12
  • the rotor 18 is circular and the recess 22 bisects the rotor 18.
  • the rotor 18 is provided with a drive shaft (not shown) which extends through the casing 12 is adapted to be driven by any appropriate means.
  • the rotor 18 is positioned in the casing 12 such that rotational axis 24 thereof lies on a plane of symmetry 26 of the casing.
  • the rotor 18 is positioned on this plane 26 such that the edge of the rotor 18 almost touches the casing 12.
  • the rotor can be said to be positioned in an upper portion of the casing 12.
  • the aforementioned plane of symmetry 26 extends between top centre 28 and bottom centre 30 of the casing 12.
  • Figure 1 shows the vane 20 aligned between the top and bottom centre 28,30. It will thus be appreciated that with the rotor 18 and vane 20 in this position, the rotor 18 and uppermost vane tip 32 are coincident with the same point on the casing 12.
  • the rotor 18 is driven so as to rotate the vane 20 within the casing 12 as indicated by arrow 36.
  • the vane 20 can be considered to divide the interior of the casing 12 into two chambers 38, 40 whose volume increase and decrease as the rotor and vane 18, 20 rotate.
  • the fluid pressure therein decreases and a drop in pressure is created at the port as indicated by arrow 42.
  • the vent port 16 permits fluid at greater than atmospheric pressure to exit the chamber 38 as indicated by arrow 44.
  • FIG. 2 there is shown an illustration of the vane path.
  • the vane 20 is shown having a centre line 46 and a centre 48 at the mid-point along this centre line 46.
  • the vane centre describes a circular path 50.
  • the centre line 46 of the vane 20 intersects with the rotational axis 24 of the rotor 18.
  • the centre 48 of the vane 20 coincides with the rotational axis 24 of the rotor 18.
  • the vane centre 48 follows a circular path 50 which minimises the velocity and acceleration of the vane 20, however other path shapes may be chosen.
  • Other vane centre path shapes are suitable provided that the vane centre 48 passes through the centre of the rotor 18 and the vane 20 is coincident with the rotor 18 at one end in its vertical position.
  • FIG. 3 illustrates the generation of such a profile.
  • the centreline of a vane is indicated by line 52.
  • Opposing ends of the vane are indicated by points PI and P2 which represent the ends of a hypothetical vane having a zero tip radius.
  • the axis of rotation of the rotor is identified at point P RC and the centre of the vane by point P V c
  • the circular path 50 of the vane centre P V c is also shown.
  • the chamber profile is generated by moving the vane centre P V c incrementally around the vane centre path 50 and noting the vane end positions PI, P2. This provides a profile 54 suitable use with a hypothetical vane with zero tip radius.
  • the actual chamber profile 56 is generated by offsetting each point on the hypothetical profile 54 by the actual vane tip radius as indicated by points P l0 fr se t and P 2o ff Set
  • FIG 4 there is shown a plan view of a casing 12 having a chamber 40 with a profile 54 according to the present invention.
  • the casing 12 may be manufactured from an aluminium alloy.
  • the vane 20 may be manufactured by a moulding process from a plastics material such as polyphenolsulphone.
  • the rotor 18 may be manufactured from a sintered material.

Landscapes

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

Abstract

A vacuum pump (10) comprising a casing (12) defining a chamber, the chamber having a suction port (14) and a vent port (16), a rotor (18) rotatable in the chamber and a vane (20) slidably supported by said rotor (18), said vane (20) extending across the rotor and the axis of rotation thereof, wherein the centre of the vane (20), in use, moves along a path which passes through the rotational axis of the rotor (18). A method of generating the vane path is also described.

Description

Vacuum Pump
The present invention relates to a vacuum pump and in particular, though not exclusively, to a vacuum pump for use in conjunction with a vehicle braking system.
According to a first aspect of the present invention there is provided a method of generating a profile of a chamber for a sliding vane vacuum pump, the method comprising the steps of: providing a hypothetical vane having opposed endpoints and a centre midway between the endpoints, the endpoints representing the tips of a vane having a zero tip radius; providing an axis of rotation of a rotor adapted, in use, to rotate said vane within the chamber. providing a continuous path for the vane centre said path passing through the axis of rotation of the rotor; and incrementally moving the vane centre about the path and logging the positions of the vane endpoints to define a hypothetical chamber profile.
The method may advantageously include the further steps of: selecting a radius for the actual tips of the vane; and modifying the hypothetical chamber profile to take into account the actual radius of the vane tips to define an actual chamber profile. The aforementioned vane centre path may be circular.
According to a second aspect of the present invention there is provided a vacuum pump comprising a casing defining a chamber, the chamber having a suction port and a vent port, a rotor rotatable in the chamber and a vane slidably supported by said rotor, said vane extending across the rotor and the axis of rotation thereof, wherein the centre of the vane, in use, moves along a path which passes through the rotational axis of the rotor.
In a preferred embodiment the vane centre path is circular. The present invention provides a chamber profile minimises rotor tip loading, in use. The loads experienced by the rotor tips are sinusoidal. The rotor tips therefore do not experience sudden changes in load or shock loading.
An embodiment of the invention will now be described with reference to the accompanying drawings in which:
Figure 1 shows a schematic side view of a vacuum pump according to the present invention;
Figure 2 illustrates the path of the rotor vane;
Figure 3 illustrates the generation of a casing profile; and
Figure 4 shows a plan view of a rotor casing according to the present invention.
Referring firstly to figure 1 there is shown a a schematic representation of a vacuum pump generally designated 10. The pump 10 comprises a casing 12 having a suction port 14 and a vent port 16. Within the casing there is provided a rotor 18 and a vane 20. The vane 20 is slidably supported in a recess 22 of the rotor 18. The vane 20 is provided with opposing tips 32, 34 adapted, in use, to provided a seal against the casing 12 In the embodiment shown the rotor 18 is circular and the recess 22 bisects the rotor 18. The rotor 18 is provided with a drive shaft (not shown) which extends through the casing 12 is adapted to be driven by any appropriate means.
As can be seen from Figure 1 the rotor 18 is positioned in the casing 12 such that rotational axis 24 thereof lies on a plane of symmetry 26 of the casing. The rotor 18 is positioned on this plane 26 such that the edge of the rotor 18 almost touches the casing 12. In the arrangement shown in Figure 1 the rotor can be said to be positioned in an upper portion of the casing 12. The aforementioned plane of symmetry 26 extends between top centre 28 and bottom centre 30 of the casing 12. Figure 1 shows the vane 20 aligned between the top and bottom centre 28,30. It will thus be appreciated that with the rotor 18 and vane 20 in this position, the rotor 18 and uppermost vane tip 32 are coincident with the same point on the casing 12.
In use the rotor 18 is driven so as to rotate the vane 20 within the casing 12 as indicated by arrow 36. The vane 20 can be considered to divide the interior of the casing 12 into two chambers 38, 40 whose volume increase and decrease as the rotor and vane 18, 20 rotate. As the volume of the chamber 38 adjacent the suction port 14 increases the fluid pressure therein decreases and a drop in pressure is created at the port as indicated by arrow 42. Continued rotation of the rotor and vane 18, 20 isolates the chamber 38 from the suction port 14 and facilitates communication with the vent port 16. The vent port 16 permits fluid at greater than atmospheric pressure to exit the chamber 38 as indicated by arrow 44.
The position of the rotor 18 within the casing 12 and the shape of the casing itself ensure that the opposing rotor tips 32 34 are maintained a very short distance from the casing at all rotational positions of the rotor 18. Turning now to figure 2 there is shown an illustration of the vane path. The vane 20 is shown having a centre line 46 and a centre 48 at the mid-point along this centre line 46. During rotation of the rotor 18 the vane centre describes a circular path 50. At all rotational positions of the rotor 18, the centre line 46 of the vane 20 intersects with the rotational axis 24 of the rotor 18. As can be seen from figure 2 at one rotational position of the rotor 18, the centre 48 of the vane 20 coincides with the rotational axis 24 of the rotor 18. In the embodiment shown the vane centre 48 follows a circular path 50 which minimises the velocity and acceleration of the vane 20, however other path shapes may be chosen. Other vane centre path shapes are suitable provided that the vane centre 48 passes through the centre of the rotor 18 and the vane 20 is coincident with the rotor 18 at one end in its vertical position.
As the vane 20 is of known length, and the motion thereof requires the vane centre 48 to coincide with the rotational axis 24 of the rotor 18, these factors, together with the vane centre path shape, may be utilised to generate an appropriate chamber profile. Figure 3 illustrates the generation of such a profile. The centreline of a vane is indicated by line 52. Opposing ends of the vane are indicated by points PI and P2 which represent the ends of a hypothetical vane having a zero tip radius. The axis of rotation of the rotor is identified at point PRC and the centre of the vane by point PVc The circular path 50 of the vane centre PVc is also shown.
The chamber profile is generated by moving the vane centre PVc incrementally around the vane centre path 50 and noting the vane end positions PI, P2. This provides a profile 54 suitable use with a hypothetical vane with zero tip radius. The actual chamber profile 56 is generated by offsetting each point on the hypothetical profile 54 by the actual vane tip radius as indicated by points Pl0frset and P2offSet
Referring now to figure 4 there is shown a plan view of a casing 12 having a chamber 40 with a profile 54 according to the present invention. In such an embodiment the casing 12 may be manufactured from an aluminium alloy. The vane 20 may be manufactured by a moulding process from a plastics material such as polyphenolsulphone. The rotor 18 may be manufactured from a sintered material.

Claims

Claims
.1. A method of generating a profile of a chamber for a sliding vane vacuum pump, the method comprising the steps of: providing a hypothetical vane having opposed endpoints and a centre midway between the endpoints, the endpoints representing the tips of a vane having a zero tip radius; providing an axis of rotation of a rotor adapted, in use, to rotate said vane within the chamber. providing a continuous path for the vane centre said path passing through the axis of rotation of the rotor; and incrementally moving the vane centre about the path and logging the positions of the vane endpoints to define a hypothetical chamber profile.
2. A method as claimed in claim 1 including the steps of: selecting a radius for the actual tips of the vane; and modifying the hypothetical chamber profile to take into account the actual radius of the vane tips to define an actual chamber profile.
3. A method as claimed in claim 1 or claim 2 wherein said vane centre path is circular.
4. A vacuum pump comprising a casing defining a chamber, the chamber having a suction port and a vent port, a rotor rotatable in the chamber and a vane slidably supported by said rotor, said vane extending across the rotor and the axis of rotation thereof, wherein the centre of the vane, in use, moves along a path which passes through the rotational axis of the rotor.
5. A vacuum pump as claimed in claim 4 wherein the vane centre path is circular
6. A vacuum pump as claimed in claim 4 or claim 5 wherein the vane is manufactured from a plastics material.
. A vacuum pump as claimed in claim 6 wherein the vane is manufactured from polyphenolsulphone.
PCT/GB2003/001307 2002-03-22 2003-03-20 Vacuum pump WO2003081049A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003217031A AU2003217031A1 (en) 2002-03-22 2003-03-20 Vacuum pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0206863A GB0206863D0 (en) 2002-03-22 2002-03-22 Vacuum pump
GB0206863.3 2002-03-22

Publications (1)

Publication Number Publication Date
WO2003081049A1 true WO2003081049A1 (en) 2003-10-02

Family

ID=9933562

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/001307 WO2003081049A1 (en) 2002-03-22 2003-03-20 Vacuum pump

Country Status (3)

Country Link
AU (1) AU2003217031A1 (en)
GB (1) GB0206863D0 (en)
WO (1) WO2003081049A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007133122A2 (en) * 2006-05-16 2007-11-22 Boris Yurievich Grigoriev Vane machine
US20100196187A1 (en) * 2007-07-03 2010-08-05 O.M.P. Officine Mazzocco Pagnoni, S.R.L. Vacuum pump for a motor vehicle engine
RU2468253C1 (en) * 2011-06-24 2012-11-27 Закрытое Акционерное Общество "Новомет-Пермь" Vane-type submersible pump
WO2013073982A1 (en) * 2011-11-16 2013-05-23 Grigoriev Boris Yur Evich Diametric positive-displacement machine (variants)
WO2016024885A1 (en) * 2014-08-13 2016-02-18 Алексей Николаевич ФЕФИЛОВ Method and device for pumping liquid or gases (variants)
CN106122002A (en) * 2016-08-10 2016-11-16 李洪刚 A kind of pump of the blade rotary driving of slip

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1442198A (en) * 1914-06-24 1923-01-16 Arthur Kitson Rotary pump, engine, or meter
GB595639A (en) * 1945-03-29 1947-12-11 Henry & Wright Mfg Company Improvements in or relating to rotary apparatus such as pumps
DE3512676A1 (en) * 1985-04-09 1986-10-16 Armatec FTS-Armaturen GmbH & Co KG, 7988 Wangen Sealing of vanes for a vane air pump
US4737090A (en) * 1985-05-30 1988-04-12 Nippondenso Co., Ltd. Movable vane compressor
DE4031468A1 (en) * 1989-10-07 1991-04-18 Barmag Barmer Maschf Configuration for vane cell pump - involves method of calculating curves for housing cross=section
US6236897B1 (en) * 1995-07-27 2001-05-22 Dae Sung Lee Calculation and precision processing of cardiocle and expanded cardioid casing curved surfaces for eccentric rotor vane pumps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1442198A (en) * 1914-06-24 1923-01-16 Arthur Kitson Rotary pump, engine, or meter
GB595639A (en) * 1945-03-29 1947-12-11 Henry & Wright Mfg Company Improvements in or relating to rotary apparatus such as pumps
DE3512676A1 (en) * 1985-04-09 1986-10-16 Armatec FTS-Armaturen GmbH & Co KG, 7988 Wangen Sealing of vanes for a vane air pump
US4737090A (en) * 1985-05-30 1988-04-12 Nippondenso Co., Ltd. Movable vane compressor
DE4031468A1 (en) * 1989-10-07 1991-04-18 Barmag Barmer Maschf Configuration for vane cell pump - involves method of calculating curves for housing cross=section
US6236897B1 (en) * 1995-07-27 2001-05-22 Dae Sung Lee Calculation and precision processing of cardiocle and expanded cardioid casing curved surfaces for eccentric rotor vane pumps

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007133122A2 (en) * 2006-05-16 2007-11-22 Boris Yurievich Grigoriev Vane machine
WO2007133122A3 (en) * 2006-05-16 2008-04-03 Boris Yurievich Grigoriev Vane machine
JP2009537731A (en) * 2006-05-16 2009-10-29 ユリエヴィッチ グリゴリエフ，ボリス Vane machine
EA013895B1 (en) * 2006-05-16 2010-08-30 Борис Юрьевич ГРИГОРЬЕВ Vane machine
US7988436B2 (en) 2006-05-16 2011-08-02 Boris Yurievich Grigoriev Vane machine
US20100196187A1 (en) * 2007-07-03 2010-08-05 O.M.P. Officine Mazzocco Pagnoni, S.R.L. Vacuum pump for a motor vehicle engine
US9670928B2 (en) * 2007-07-03 2017-06-06 O.M.P. Officine Mazzocco Pagnoni, S.R.L. Vacuum pump for a motor vehicle engine
RU2468253C1 (en) * 2011-06-24 2012-11-27 Закрытое Акционерное Общество "Новомет-Пермь" Vane-type submersible pump
WO2013073982A1 (en) * 2011-11-16 2013-05-23 Grigoriev Boris Yur Evich Diametric positive-displacement machine (variants)
WO2016024885A1 (en) * 2014-08-13 2016-02-18 Алексей Николаевич ФЕФИЛОВ Method and device for pumping liquid or gases (variants)
CN106122002A (en) * 2016-08-10 2016-11-16 李洪刚 A kind of pump of the blade rotary driving of slip

Also Published As

Publication number Publication date
AU2003217031A1 (en) 2003-10-08
GB0206863D0 (en) 2002-05-01

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