WO2002081921B1 - Variable displacement pump having a rotating cam ring - Google Patents

Variable displacement pump having a rotating cam ring

Info

Publication number
WO2002081921B1
WO2002081921B1 PCT/US2002/009298 US0209298W WO02081921B1 WO 2002081921 B1 WO2002081921 B1 WO 2002081921B1 US 0209298 W US0209298 W US 0209298W WO 02081921 B1 WO02081921 B1 WO 02081921B1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel pump
cam
housing
cam sleeve
pump
Prior art date
Application number
PCT/US2002/009298
Other languages
French (fr)
Other versions
WO2002081921A1 (en
Inventor
Martin A Clements
Lowell D Hansen
Original Assignee
Argo Tech Corp
Martin A Clements
Lowell D Hansen
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 DE60207401T priority Critical patent/DE60207401T2/en
Priority to JP2002579661A priority patent/JP4215515B2/en
Priority to CA2443367A priority patent/CA2443367C/en
Priority to US10/474,225 priority patent/US7108493B2/en
Priority to EP02728572A priority patent/EP1384005B1/en
Priority to KR10-2003-7013097A priority patent/KR20040004577A/en
Application filed by Argo Tech Corp, Martin A Clements, Lowell D Hansen filed Critical Argo Tech Corp
Priority to AT02728572T priority patent/ATE310164T1/en
Publication of WO2002081921A1 publication Critical patent/WO2002081921A1/en
Publication of WO2002081921B1 publication Critical patent/WO2002081921B1/en
Priority to US11/499,462 priority patent/US7491043B2/en
Priority to US12/371,849 priority patent/US8740593B2/en
Priority to US14/274,979 priority patent/US9435338B2/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
    • 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
    • F04C14/226—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 by pivoting the cam around an eccentric axis
    • 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
    • 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
    • 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
    • F04C2220/00—Application
    • F04C2220/24—Application for metering throughflow
    • 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
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0804—Non-oxide ceramics
    • F05C2203/0813—Carbides
    • F05C2203/0826—Carbides of wolfram, e.g. tungsten carbide

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Friction Gearing (AREA)

Abstract

Vane pump (10) mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring (70) is supported by a journal bearing (80). A relatively low sliding velocity is imposed between the cam ring and the vanes (26). This permits the use of less expensive and less brittle materials in the pump by allowing the pump to operate at much higher speeds without concern for exceeding vane tip velocity limits.

Claims

AMENDED CLAIMS
[received by the International Bureau on 08 November 2002 (08.11.02); original claims 1-25 replaced by new claims 1-32 (4 pages)]
Having thus described the present invention- it is now claimed:
1. A variable displacement gas turbine fuel pump comprising: a housing having a pump chamber, and an inlet and outlet in fluid communication with the pump chamber; a rotor received in the pump chamber; a cam member surrounding the rotor and freely rotating relative to the housing; a cam sleeve radially interposed between the cam member and the housing; means for altering a position of the cam sleeve in the housing to selectively vary pump output; and a journal bearing interposed between the cam member and the cam sleeve for reducing mechanical losses during operation of the purnp.
2. The fuel pump of claim 1 wherein the cam member has a smooth, inner peripheral wall that allows the rotor to rotate freely relative to the cam member.
3. The fuel pump of claim 1 wherein the journal bearing is a continuous annular passage between the cam member and the cam sleeve.
4. The fuel pump of claim 1 further comprising circumferentially spaced vanes operatively associated with the rotor.
5. The fuel pump of claim 1 further comprising a cam sleeve radially interposed between the cam member and the housing.
6. The fuel pump of claim 5 further comprising means for altering a position of the cam sleeve in the housing to selectively vary pump output.
7. The fuel pump of claim 1 further comprising a spacer ring radially interposed between the cam sleeve and lite housing. 13
8. The fuel pump of claim 7 wherein the cam sleeve is pivotally secured to the spacer ring to selectively vary an offset between the cam member and the rotor.
9. The fuel pump of claim 1 wherein the journal bearing is a hydrostatic bearing.
10. The fuel pump of claim 1 wherein the j oumal bearing is a hydrodynamic bearing.
11. The fuel pump of claim 1 wherein the journal bearing is a hybrid hydrostatic/hydrodynamic bearing.
12. A variable displacement gas turbine fuel pump for supplying jet fuel from a supply to a set of downstream nozzles, the gas turbine fuel pump comprising: a housing having a fuel inlet and a fuel outlet in operative communication with a pump chamber; a rotor received in the pump chamber, the rotor having plural vanes that segregate the pump chamber into individual pump chamber portions; a cam ring received around the rotor having radially inner and outer surfaces, the inner surface slidingly engaging the vanes; a cam sleeve radially interposed between the cam ring and the housing; means for altering a position of the cam sleeve in the housing to selectively vary pump output; and a cam journal bearing surrounding the cam ring in communication with the fuel inlet whereby jet fuel serves as the fluid film in the journal bearing for the cam ring.
13. The fuel pump of claim 12 wherein the journal bearing is a hydrodynamic bearing.
14. The fuel pump of claim 12 wherein the journal bearing is a hydrostatic bearing. 14
15. The fuel pump of claim 12 wherein the journal bearing is a hybrid hydrostatic hydrodynamic bearing.
1 . The fuel pump of claim 12 wherein a center of the cam sleeve enclosing the cam ring is selectively offset from a rotational axis of the rotor.
17. The fuel pump of claim 12 wherein the journal bearing is a continuous annular passage between the cam ring and the cam sleeve.
18. The fuel pump of claim 12 further comprising circumferentially spaced vanes operatively associated with the rotor.
19. The fuel pump of claim 12 further comprising a cam sleeve radially interposed between the cam ring and the housing.
20. The fuel pump of claim 19 further comprising means for altering a position of the cam sleeve in the housing to selectively vary pump output.
1. The fuel pump of claim 19 further comprising a spacer ring radial ly interposed between the cam sleeve and the housing.
22. The fuel pump of claim 21 wherein the cam sleeve is pivotally secured to the spacer ring to selectively vary the eccentricity between the cam ring and the rotor.
23. The fuel pump of claim 12 wherein the vanes are formed of tungsten carbide.
24. The fuel pump of claim 12 wherein the cam ring is formed of a low cost, durable material.
25. A method of operating a gas turbine fuel pump that includes a housing having a pump chamber that receives a rotor therein and a cam member surrounding 15
the rotor, a cam sleeve surrounding the cam member and a spacer ring disposed between the cam sleeve and the housing, die method comprising the steps of: supporting the cam member via a journal bearing in the housing; allowing the rotor to rotate freely relative to the cam member; and linearly translating a centerpoint of the cam sleeve to limit pressure pulsations in seal zones of the assembly.
26. The fuel pump of claim 8 wherein the spacer ring includes a generally planar surface that allows a centerpoint of the cam sleeve to linearly translate.
27. The fuel pump of claim 8 wherein the spacer ring includes a generally planar surface along an inner surface tliereof upon wliich the cam sleeve rolls in response to actuation of the altering means.
28- The fuel pump of claim 1 further comprising a spacer ring radially interposed between the cam sleeve and the bousing, and an anti-rotation pin interconnecting the spacer ring and the cam sleeve.
29. The fuel pump of claim 28 wherein the spacer ring includes a generally planar surface along an inner surface thereof adjacent the anti-rotation pin.
30. The method of claim 29 wherein the spacer ring includes generally planar surfaces on opposite sides of the anti-rotation pin.
31. The fuel pump of claim 12 further comprising a spacer ring radially interposed between the cam sleeve and the housing, and an anti-rotation pin interconnecting the spacer ring and the cam sleeve.
32. The fuel pump of claim 31 wherein the spacer ring includes a generally planar surface along an inner surface thereof adjacent the anti-rotation pm upon which the cam sleeve rolls in response to actuation of the altering means.
PCT/US2002/009298 2001-04-05 2002-03-27 Variable displacement pump having a rotating cam ring WO2002081921A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP2002579661A JP4215515B2 (en) 2001-04-05 2002-03-27 Variable displacement pump with rotating cam ring
CA2443367A CA2443367C (en) 2001-04-05 2002-03-27 Variable displacement pump having a rotating cam ring
US10/474,225 US7108493B2 (en) 2002-03-27 2002-03-27 Variable displacement pump having rotating cam ring
EP02728572A EP1384005B1 (en) 2001-04-05 2002-03-27 Variable displacement pump having a rotating cam ring and method of operation
KR10-2003-7013097A KR20040004577A (en) 2001-04-05 2002-03-27 Variable displacement pump having a rotating cam ring
DE60207401T DE60207401T2 (en) 2001-04-05 2002-03-27 ADJUSTING PUMP WITH ROTATING CAM RING AND OPERATING PROCEDURES
AT02728572T ATE310164T1 (en) 2001-04-05 2002-03-27 VARIABLE ROTATING CAM RING PUMP AND OPERATING METHOD
US11/499,462 US7491043B2 (en) 2001-04-05 2006-08-04 Variable displacement pump having a rotating cam ring
US12/371,849 US8740593B2 (en) 2001-04-05 2009-02-16 Variable displacement pump having a rotating cam ring
US14/274,979 US9435338B2 (en) 2001-04-05 2014-05-12 Variable displacement pump having rotating cam ring

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28163401P 2001-04-05 2001-04-05
US60/281,634 2001-04-05

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US10474225 A-371-Of-International 2002-03-27
US10/474,225 A-371-Of-International US7108493B2 (en) 2001-04-05 2002-03-27 Variable displacement pump having rotating cam ring
US11/499,462 Continuation US7491043B2 (en) 2001-04-05 2006-08-04 Variable displacement pump having a rotating cam ring

Publications (2)

Publication Number Publication Date
WO2002081921A1 WO2002081921A1 (en) 2002-10-17
WO2002081921B1 true WO2002081921B1 (en) 2003-03-20

Family

ID=23078142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/009298 WO2002081921A1 (en) 2001-04-05 2002-03-27 Variable displacement pump having a rotating cam ring

Country Status (8)

Country Link
EP (1) EP1384005B1 (en)
JP (1) JP4215515B2 (en)
KR (1) KR20040004577A (en)
CN (2) CN101968053B (en)
AT (1) ATE310164T1 (en)
CA (2) CA2443367C (en)
DE (1) DE60207401T2 (en)
WO (1) WO2002081921A1 (en)

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KR20070012393A (en) * 2004-03-29 2007-01-25 아르고-테크 코포레이션 Two-displacement setting variable displacement pump used as engine over-thrust protection with fuel system thermal benefit
WO2006085943A2 (en) 2004-06-30 2006-08-17 Argo-Tech Corporation Improved heat exchanger performance
ITBO20040088U1 (en) * 2004-11-19 2005-02-19 H P E High Performance Engineering OIL PUMP WITH VARIABLE FLOW PALLETS
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Also Published As

Publication number Publication date
DE60207401D1 (en) 2005-12-22
CN101968053A (en) 2011-02-09
EP1384005A4 (en) 2004-10-13
CA2715436C (en) 2015-03-10
JP2004522902A (en) 2004-07-29
CA2443367A1 (en) 2002-10-17
DE60207401T2 (en) 2006-08-10
WO2002081921A1 (en) 2002-10-17
EP1384005A1 (en) 2004-01-28
CN101968053B (en) 2013-06-19
JP4215515B2 (en) 2009-01-28
CA2715436A1 (en) 2002-10-17
CN100557244C (en) 2009-11-04
EP1384005B1 (en) 2005-11-16
CN1531629A (en) 2004-09-22
CA2443367C (en) 2011-03-15
ATE310164T1 (en) 2005-12-15
KR20040004577A (en) 2004-01-13

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