US20090175750A1 - Variable delivery vane oil pump, in particular for oil - Google Patents

Variable delivery vane oil pump, in particular for oil Download PDF

Info

Publication number
US20090175750A1
US20090175750A1 US11/719,734 US71973405A US2009175750A1 US 20090175750 A1 US20090175750 A1 US 20090175750A1 US 71973405 A US71973405 A US 71973405A US 2009175750 A1 US2009175750 A1 US 2009175750A1
Authority
US
United States
Prior art keywords
pump
rotor
stator
axis
sliding
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.)
Abandoned
Application number
US11/719,734
Inventor
Ennio Ascari
Lorenzo Campani
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.)
H P E High Performance Engeneering Srl
Officine Mazzocco Pagnoni Srl
Original Assignee
H P E High Performance Engeneering Srl
Officine Mazzocco Pagnoni Srl
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
Priority to ITBO2004A000715 priority Critical
Priority to ITBO20040715 priority patent/ITBO20040715A1/en
Application filed by H P E High Performance Engeneering Srl, Officine Mazzocco Pagnoni Srl filed Critical H P E High Performance Engeneering Srl
Priority to PCT/IB2005/003455 priority patent/WO2006054161A1/en
Assigned to OFFICINE MAZZOCCO PAGNONI S.R.L., H.P.E. HIGH PERFORMANCE ENGENEERING S.R.L. reassignment OFFICINE MAZZOCCO PAGNONI S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASCARI, ENNIO, CAMPANI, LORENZO
Assigned to H.P.E. HIGH PERFORMANCE ENGENEERING S.R.L., O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L. reassignment H.P.E. HIGH PERFORMANCE ENGENEERING S.R.L. CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF THE SECOND RECEIVING PARTY PREVIOUSLY RECORDED ON REEL 019729 FRAME 0048. ASSIGNOR(S) HEREBY CONFIRMS THE NAME OF THE SECOND RECEIVING PARTS IS O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.. Assignors: ASCARI, ENNIO, CAMPANI, LORENZO
Publication of US20090175750A1 publication Critical patent/US20090175750A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22Control 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
    • F04C14/223Control 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
    • F04C14/226Control 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 by pivoting the cam around an eccentric axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08Rotary pistons
    • F01C21/0809Construction of vanes or vane holders
    • F01C21/0818Vane tracking; control therefor
    • F01C21/0827Vane tracking; control therefor by mechanical means
    • F01C21/0836Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08Rotary pistons
    • F01C21/0809Construction of vanes or vane holders
    • F01C21/0881Construction of vanes or vane holders the vanes consisting of two or more parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22Control 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

Abstract

A variable delivery vane pump, in particular for oil, is provided with a stator (10) eccentrically mounted about a rotor (9), which is adapted to turn about one own longitudinal axis (6), and presents a plurality of outwardly radially open grooves (15) and slidingly engaged, each, by a respective vane (17) defined by at least two foils (25) reciprocally overlapped and slidingly coupled one to the other.

Description

    TECHNICAL FIELD
  • The present invention relates to a variable delivery vane pump, in particular for oil.
  • In particular, the present invention relates to a variable delivery vane pump of the type comprising a rotor, which is mounted to turn about its longitudinal axis, and presents a plurality of outwardly radially open grooves; a stator, which extends around the rotor, and is eccentrically mounted with respect to the rotor itself; a plurality of vanes, each of which is slidingly mounted inside a respective groove, and presents an outer edge facing the stator; and adjusting means for selectively controlling the eccentricity between the rotor and the stator and, therefore, the delivery of the pump.
  • BACKGROUND ART
  • The known variable delivery vane pumps of the type described above present some drawbacks mainly deriving from the fact that the efficiency of the fluidtight coupling between the vanes and the stator is relatively reduced and decreases rapidly with pump use.
  • DISCLOSURE OF INVENTION
  • It is the object of the present invention to provide a variable delivery vane pump, in particular for oil, which is free from the aforementioned drawbacks.
  • According to the present invention, there is provided a variable delivery vane pump, in particular for oil, as claimed in the attached claims.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention will now be described with reference to the accompanying drawings illustrating a non-limitative embodiment example thereof, in which:
  • FIG. 1 is a schematic longitudinal section of a preferred embodiment of the vane pump of this invention;
  • FIG. 2 is a section taken along line II-II in FIG. 1;
  • FIG. 3 is a section taken along line III-III in FIG. 1; and
  • FIGS. 4 and 5 are two lateral views of two variations of a detail in figures from 1 to 3.
  • BEST MODE FOR CARRYING OUT THE INVENTION
  • With reference to figures from 1 to 3, it is indicated by 1, as a whole, a variable delivery vane pump, in particular for feeding oil to a lubrication circuit (not shown) of an internal combustion engine (not shown) of a vehicle (not shown).
  • The pump 1 comprises a supporting case 2, which has an essentially parallelepiped shape with an essentially rectangular section, and comprises, in turn, a first plate 3 laterally limited by an essentially flat surface 4. The plate 3 is provided with a cavity 5, which presents a longitudinal axis 6 orthogonal to the surface 4, outwardly opens at the surface 4, and is axially closed by a second plate 7 arranged in contact with the surface 4 itself.
  • The pump 1 also comprises a power shaft 8, which is mounted through the plates 3 and 7 to turn about the axis 6, and carries a keyed cylindrical rotor 9, which is housed inside the cavity 5, and presents a width, parallelly measured to the axis 6, essentially equal to the width of the cavity 5, also parallelly measured to the axis 6.
  • The cavity 5 further houses inside a stator 10, which extends about the rotor 9, presents a width, parallelly measured to the axis 6, essentially equal to the width of the cavity 5 also parallelly measured to the axis 6, and is internally limited by an essentially cylindrical surface 11 arranged in eccentric position with respect to the rotor 9.
  • The stator 10 is hinged to the plate 3 to oscillate, with respect to the plate 3 itself and under the control of an adjusting device 12 of the known type, about a fulcrum axis 13 parallel to the axis 6 and, therefore, allowing to selectively control the eccentricity between the rotor 9 and the surface 11.
  • The rotor 9 presents two cylindrical reciprocally opposite cavities 14, which are obtained coaxially to the axis 6, and one facing the plate 3 and the other the plate 7, and is provided with a plurality of radial grooves 15 (in the case shown, six grooves 15), which are obtained through the rotor 9 parallel to the axis 6, are uniformly distributed about the axis 6, radially open outwardly at an outer surface 16 of the rotor 9 coaxially to the axis 6, and further axially open outwardly at the cavities 14.
  • Each groove 15 is slidingly engaged by a vane 17 presenting an outer edge 18, which extends parallel to the axis 6, and is arranged essentially in contact with the surface 11 of the stator 10 by arranging an annular shoe 19 in between.
  • The shoe 19 presents a width, parallelly measured to the axis 6, essentially equal to the width of a vane 17 also parallelly measured to the axis 6, and is circumferentially slidable both to the stator 10, and to the vanes 17.
  • Each vane 17 axially projects from the respective groove 15 inside the cavities 14, and presents an inner edge 20, which extends parallel to the axis 6, and is essentially arranged in contact with two annular elements 21, each of which is accommodated inside one of the cavities 14, extends about the shaft 8, and presents a diameter larger than the diameter of the shaft 8 and smaller than the diameter of the respective cavity 14 so as to float inside the respective cavity 14 itself.
  • Each pair of respectively adjacent vanes 17 circumferentially defines a respective pumping chamber 22, which is further limited radially by the rotor 9 and by the shoe 19 and axially by the plates 3 and 7, is shifted by the rotor 9 about the axis 6 and through a suction inlet 23 and a delivery outlet 24 of the oil, and presents, following the rotation of the rotor 9 about the axis 6 and the eccentricity between the rotor 9 and the surface 11 of the stator 10, a variable volume.
  • Furthermore, with regard to this it is important to point out that the volume of each chamber 22 at the inlet 23 and at the outlet 24 and, therefore, the delivery of the pump 1 are selectively controlled by shifting the stator 10 about the axis 13 and, therefore, modifying the eccentricity between the rotor 9 and the surface 11 of the stator 10 itself.
  • As shown in FIG. 2, each vane 17 comprises a plurality of foils 25 (in the case shown, four foils 25), which are reciprocally overlapped, and are slidingly radially coupled one to the other to ensure a relatively efficient fluidtight coupling between the vane 17 and the shoe 19.
  • With reference to FIG. 4, the annular shoe 19 is replaced with a plurality of shoes 26 (in the case shown, three shoes 26), each of which is arranged between the surface 11 and two respective vanes 17, is slidingly circumferentially coupled to the surface 11 and to the respective vanes 17, and presents two curved ends 27, one of which is essentially arranged in contact with a respective vane 17.
  • With reference to FIG. 5, the annular shoe 19 is replaced with a single shoe 28, which is arranged between the surface 11 and the vanes 17, extends about the axis 6 according to an angle smaller than 360°, is slidingly circumferentially coupled to the surface 11 and to the vanes 17, and presents two curved ends 29, one of which is essentially arranged in contact with a respective vane 17.
  • According to a variation not shown, the shoes 19, 26, and 28 are housed inside respective cavities, which are obtained in the stator 10, and outwardly open at the surface 11, and outwardly project from the respective cavities to arrange themselves in contact with the respective vanes 17.
  • According to a further variation not shown, the curved ends 27, 29 of each shoe 26, 28 are replaced with two enlarged edges parallel to the axis 6.
  • The operation of the pump 1 is easily inferred from the description set forth above and does not require further explanations.

Claims (12)

1. A variable delivery vane pump, the pump comprising:
a rotor said rotor being mounted to turn about a longitudinal axis said rotor presenting a plurality of grooves outwardly radially open at a surface essentially coaxial to said axis;
a stator said stator extending about the rotor, and being eccentrically mounted with respect to the rotor;
a plurality of vanes, each of said vanes being slidingly mounted inside a respective one of said groove, and presenting an outer edge facing the stator; an adjustor said adjustor selectively controlling an eccentricity between the rotor and the stator; each of said vane comprising at least two foils said foils being reciprocally overlapped and slidingly coupled one to the other.
2. A pump according to claim 1 further comprising two annular elements said annular elements being arranged on opposite bands of the rotor parallel to said axis, and extending about the axis; each of said vane axially projecting from one of said respective groove and presenting an inner edge disposed to contact said annular elements.
3. A pump according to claim 1 further comprising a sliding element arranged between the stator and an outer edges of at least one of the vanes.
4. A pump according to claim 3 further comprising a single one of said sliding element extending about said axis substantially about 360°.
5. A pump according to claim 3 further comprising a single one of said sliding element extending about said axis according to an angle smaller than 360°.
6. A pump according to claim 5, further comprising said sliding element presenting two curved ends.
7. A pump according to claim 5, further comprising said sliding element presenting two enlarged end edges substantially parallel to said axis.
8. A pump according to claim 3 further comprising at least two of said sliding elements distributed about said axis.
9. A pump according to claim 8, further comprising each of said sliding elements presenting two curved ends.
10. A pump according to claim 8, further comprising each of said sliding elements presenting two enlarged end edges substantially parallel to said axis.
11. A pump according to claim 3 further comprising each of said sliding elements being slidingly circumferentially coupled to the stator and to the vanes.
12. A variable delivery vane pump, the pump comprising:
a rotor said motor being mounted to turn about a longitudinal axis, and presenting a plurality of grooves outwardly open at surface essentially coaxial to said axis;
a stator, said stator extending about the rotor, and being eccentrically mounted with respect to the rotor;
a plurality of vanes, each of said vanes being slidingly mounted inside a respective one of said groove, and presenting an outer edge facing the stator;
an adjustor selectively controlling an eccentricity between the rotor and the stator
each vane comprising at least two foils reciprocally overlapped and slidingly coupled one to the other; and
at least one sliding element being arranged between the stator and the vanes.
US11/719,734 2004-11-19 2005-11-18 Variable delivery vane oil pump, in particular for oil Abandoned US20090175750A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITBO2004A000715 2004-11-19
ITBO20040715 ITBO20040715A1 (en) 2004-11-19 2004-11-19 Vane pump with variable flow rate, particularly for oil
PCT/IB2005/003455 WO2006054161A1 (en) 2004-11-19 2005-11-18 Variable-delivery vane pump, in particular for oil

Publications (1)

Publication Number Publication Date
US20090175750A1 true US20090175750A1 (en) 2009-07-09

Family

ID=35954056

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/719,734 Abandoned US20090175750A1 (en) 2004-11-19 2005-11-18 Variable delivery vane oil pump, in particular for oil

Country Status (6)

Country Link
US (1) US20090175750A1 (en)
EP (1) EP1812711A1 (en)
JP (1) JP2008520899A (en)
CN (1) CN101137846A (en)
IT (1) ITBO20040715A1 (en)
WO (1) WO2006054161A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102425548A (en) * 2011-12-22 2012-04-25 上海成峰流体设备有限公司 Blade structure of blade pump
US9808817B2 (en) 2014-05-02 2017-11-07 Graco Minnesota Inc. Paint sprayer floating pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20040716A1 (en) * 2004-11-19 2005-02-19 H P E High Performance Enginee Vane pump with variable flow rate, particularly for oil

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371942A (en) * 1943-02-20 1945-03-20 Morgan T Armstrong Rotary engine
US4558998A (en) * 1983-08-04 1985-12-17 Nissan Motor Co., Ltd. Variable capacity type vane pump with balancing groove in the cam ring
US4616985A (en) * 1983-03-31 1986-10-14 Mazda Motor Corporation Vane type compressor having an improved rotatable sleeve
US5752815A (en) * 1995-09-12 1998-05-19 Mercedes Benz Ag Controllable vane pump
US20010036411A1 (en) * 2000-02-15 2001-11-01 Walker Frank H. Reversible variable displacement hydraulic pump and motor
US20010055538A1 (en) * 2000-01-20 2001-12-27 Willi Schneider Vane cell pump/motor
US20090110577A1 (en) * 2004-11-19 2009-04-30 H.P.E. High Performance Engeneering S.R.I. Variable delivery vane oil pump, in particular for oil
US20090155113A1 (en) * 2004-11-19 2009-06-18 H.P.E. High Performance Engeneering S.R.L. Variable delivery vane oil pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745730A (en) * 1933-05-13
FR778346A (en) * 1933-12-05 1935-03-14 Improvements to pallet boosters
FR1273514A (en) * 1960-10-27 1961-10-13 Improvement to rotary positive displacement machines vane
DE3014519A1 (en) * 1980-04-16 1981-10-22 Skf Kugellagerfabriken Gmbh Turning piston, in particular cell pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371942A (en) * 1943-02-20 1945-03-20 Morgan T Armstrong Rotary engine
US4616985A (en) * 1983-03-31 1986-10-14 Mazda Motor Corporation Vane type compressor having an improved rotatable sleeve
US4558998A (en) * 1983-08-04 1985-12-17 Nissan Motor Co., Ltd. Variable capacity type vane pump with balancing groove in the cam ring
US5752815A (en) * 1995-09-12 1998-05-19 Mercedes Benz Ag Controllable vane pump
US20010055538A1 (en) * 2000-01-20 2001-12-27 Willi Schneider Vane cell pump/motor
US20010036411A1 (en) * 2000-02-15 2001-11-01 Walker Frank H. Reversible variable displacement hydraulic pump and motor
US20090110577A1 (en) * 2004-11-19 2009-04-30 H.P.E. High Performance Engeneering S.R.I. Variable delivery vane oil pump, in particular for oil
US20090155113A1 (en) * 2004-11-19 2009-06-18 H.P.E. High Performance Engeneering S.R.L. Variable delivery vane oil pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102425548A (en) * 2011-12-22 2012-04-25 上海成峰流体设备有限公司 Blade structure of blade pump
US9808817B2 (en) 2014-05-02 2017-11-07 Graco Minnesota Inc. Paint sprayer floating pump

Also Published As

Publication number Publication date
WO2006054161A1 (en) 2006-05-26
EP1812711A1 (en) 2007-08-01
CN101137846A (en) 2008-03-05
JP2008520899A (en) 2008-06-19
ITBO20040715A1 (en) 2005-02-19

Similar Documents

Publication Publication Date Title
KR101192649B1 (en) Compressor having output adjustment assembly including piston actuation
ES2561978T3 (en) Spiral compressor
US6763797B1 (en) Engine oil system with variable displacement pump
JP4776203B2 (en) Variable displacement vane pump with variable target adjuster
US3543368A (en) Variable capacity fluid discharge device
EP1992846B1 (en) Oil pump system for vehicle
CA2611761C (en) Gear pump with improved inlet port
CN102191962B (en) Engine with dual cam phaser for concentric camshaft
CN100532841C (en) Variable output rotor pump
US9243632B2 (en) Variable displacement oil pump
KR100749040B1 (en) Scroll compressor
JP4741155B2 (en) Pump
US6772728B2 (en) Supercharged radial vane rotary device
EP1243794B1 (en) Vane hydraulic motor
KR100476581B1 (en) Variable displacement pump
JP5877976B2 (en) Vane pump
US8342815B2 (en) Oil pump
JP2012067735A (en) Electric pump
US7484939B2 (en) Variable displacement radial piston pump
US20080219874A1 (en) Variable displacement vane pump
CN102889207B (en) Unified variable capacity oil pump and vacuum pump
CN101334025B (en) Liquid-cooled rotor assembly for a supercharger
MX2008012455A (en) Variable displacement sliding vane pump.
CN101936291B (en) Vane pump
EP1312802A2 (en) Rotary vane pump

Legal Events

Date Code Title Description
AS Assignment

Owner name: H.P.E. HIGH PERFORMANCE ENGENEERING S.R.L., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ASCARI, ENNIO;CAMPANI, LORENZO;REEL/FRAME:019729/0048

Effective date: 20070705

Owner name: OFFICINE MAZZOCCO PAGNONI S.R.L., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ASCARI, ENNIO;CAMPANI, LORENZO;REEL/FRAME:019729/0048

Effective date: 20070705

AS Assignment

Owner name: H.P.E. HIGH PERFORMANCE ENGENEERING S.R.L., ITALY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF THE SECOND RECEIVING PARTY PREVIOUSLY RECORDED ON REEL 019729 FRAME 0048;ASSIGNORS:ASCARI, ENNIO;CAMPANI, LORENZO;REEL/FRAME:020005/0695

Effective date: 20070705

Owner name: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L., ITALY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF THE SECOND RECEIVING PARTY PREVIOUSLY RECORDED ON REEL 019729 FRAME 0048;ASSIGNORS:ASCARI, ENNIO;CAMPANI, LORENZO;REEL/FRAME:020005/0695

Effective date: 20070705

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION