US3663130A - Variable jaws for vane pump - Google Patents

Variable jaws for vane pump Download PDF

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Publication number
US3663130A
US3663130A US60802A US3663130DA US3663130A US 3663130 A US3663130 A US 3663130A US 60802 A US60802 A US 60802A US 3663130D A US3663130D A US 3663130DA US 3663130 A US3663130 A US 3663130A
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US
United States
Prior art keywords
pair
body portion
jaws
ribs
pumping zone
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.)
Expired - Lifetime
Application number
US60802A
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English (en)
Inventor
Hans Links
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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Filing date
Publication date
Application filed by Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Application granted granted Critical
Publication of US3663130A publication Critical patent/US3663130A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • This invention generally relates to a rotary pump which includes blades which are radially shifted with respect to the rotor body and further includes adjustable jaws which are movable along a defined path so as to permit ready adjustment of the size of the discharge zone.
  • Various types of pumps have been suggested which include elastic as well as radially adjustable bearing surfaces. Such devices usually include two dividers or abutments which separate the intake and discharge zones. One of these dividers is usually stationary while the other is radially adjustable. Alternately, prior pumps have included elastic parts which are unilaterally clamped and span the interstices. The blades move uniformly at any selected pump output. With respect to such an arrangement there are generally two abutments which are curved in shape and rest upon a stationary block. Due to the system elasticity there may occur a distortion of the discharge zone of the pump. If the pump is to be used in high pressure applications such elastic constructions are generally unsatisfactory as they do not permit accurate regulation of the delivery rate.
  • a semicircular recess is defined by the running jaws and continues beyond the region of the outlet openings in the form of an Archimedes spiral.
  • the jaws may if desired be fabricated of molded plastics material. This spiral intersects with a straight edge to form a tangent thereto thereby forming a tapered end or tip. Additionally in the region adjacent each of such tips there may be provided pressure relief grooves which extend into the corresponding intake zone.
  • FIG. I is a sectional view of a rotary tain features of this invention.
  • FIG. 2 is a sectional view taken along the line lI-II of FIG.
  • FIG. 3 is a schematic of the jaws in the null or zero pump position.
  • FIG. 4 is an enlarged oblique view of FIG. 3 illustrating the construction of the jaws.
  • FIG. 5 is a sectional view taken along the line V-V of FIG. 3.
  • the rotary pump includes several sections which in a known manner form an intake housing I at the intake side of the pump and form a discharge housing 2 at the exhaust side thereof.
  • a delivery conveyor frame 3 secured by means of screws 4 and alignment pins 5.
  • a pair of mating jaws 6 and 7 which are arranged so that they may be radially shifted.
  • the semicircular running surfaces 9 and I0 of the jaws 6 and 7 define a pumping zone 8. The relative movement of the running jaws 6, 7 produces an adjustment in the volume of the pumping zone 8.
  • the zone 8 may be decreased or enlarged as the cross sectional area defined by the surfaces 9 and 10 varies between that of a circle and that of an oval as illustrated in FIG. I.
  • the pumping blades I3 which are spring biased outwardly, will be urged toward the center of the rotor body 14.
  • the delivery rate can be easily adjusted by either varying the regulation of the pressure or by changing the driving power supplied to the pump.
  • liquid pressure is applied to the control pistons I5, and I6, and then exhausts through the fluid passageways l7 and 18. Radial movement of the pistons 15 and 16 produces a corresponding shift in the regulating pins I9 and 20in the jaws 6 and 7.
  • the jaws 6 and 7 are similarly shaped and are radially shiftable with respect to the rotor. Each thereof is generally block shaped having a concave contour 305 for one-half of the pumping zone, defining the working side of the base portion 300.
  • a guide bar 302 projects from one, here the upper, side 30] of the base portion and a channel 304 is provided in the opposite, here the lower, side thereof. Since the base portion 300 terminates at the respective upper and lower ends of the contour 305, the guide bar 302 projects beyond, here leftwardly, the base portion as indicated at 302A and the groove 304 continues to be defined by projecting portions 303A and 3035 of the lower side 303 of said base portion.
  • the guide bar 302 is dimensioned for a snug sliding fit into the groove 304 of an adjacent similarly formed sliding jaw member.
  • the lower side of bar 302 is a tangential continuation of the upper end of the surface 305 and the upper surfaces of the bars 303A and 3038 are tangential continuations of the lower end of surface 305.
  • a pair of said sliding jaws are then fitted together as shown in FIGS. 3 and 5 to define between the respective contours 305 the pumping zone 8 referred to above.
  • the running jaws are preferably fabricated of a molded plastics material.
  • a material resists wear and tear, and exhibits a much lower specific gravity than suitable metallic materials.
  • plastics materials can usually be molded within narrow dimensional tolerances, thus eliminating any refinishing operations.
  • a radius 307 is provided as shown to minimize areas of wear.
  • a vane pump having a plurality of radially movable vanes on a rotor rotatably mounted in a pumping zone
  • the combination comprising: a pair of identically formed. radially slidable jaws for adjusting the volume of said pumping zone, each of said jaws comprising a body portion having an elongated arcuate wall for defining one side of the pumping zone, a pair of horizontally spaced and parallel ribs projecting outwardly from one side of said body portion and defining a guide space therebetween, said pair of ribs each having a first surface extending in tangential relationship to said wall, a single rib projecting outwardly from the other side of said body portion and extending coextensively and in parallel relationship to said pair of ribs, said single rib having a second surface extending in tangential relationship to said wall and parallel to said first surfaces on said pair of ribs, said guide space and said single rib being of such dimensions that two of said body portions can interfit each
  • a vane pump according to claim I wherein said wall is provided with a radius at the end which runs out to a point

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
US60802A 1969-08-04 1970-08-04 Variable jaws for vane pump Expired - Lifetime US3663130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691939595 DE1939595A1 (de) 1969-08-04 1969-08-04 Verstellbacken fuer Fluegelzellenpumpe

Publications (1)

Publication Number Publication Date
US3663130A true US3663130A (en) 1972-05-16

Family

ID=5741860

Family Applications (1)

Application Number Title Priority Date Filing Date
US60802A Expired - Lifetime US3663130A (en) 1969-08-04 1970-08-04 Variable jaws for vane pump

Country Status (3)

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US (1) US3663130A (enExample)
DE (1) DE1939595A1 (enExample)
FR (1) FR2057828A5 (enExample)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784326A (en) * 1972-01-24 1974-01-08 Chandler Evans Inc Pressure compensated pump
US3808814A (en) * 1972-03-20 1974-05-07 R Macy Fluid transmission
US4688815A (en) * 1984-03-27 1987-08-25 Lectrolarm Custom Systems, Inc. Hydraulically driven bicycle
US5618165A (en) * 1992-04-14 1997-04-08 Ab Volvo Variable displacement and constant pressure pump
WO2001012991A1 (en) * 1999-08-13 2001-02-22 Argo-Tech Corporation Dual lobe, split ring, variable roller vane pump
US6402487B1 (en) 1999-08-13 2002-06-11 Argo-Tech Corporation Control system for variable exhaust nozzle on gas turbine engines
FR2897663A1 (fr) * 2006-02-21 2007-08-24 Olivier Gouny Dispositif hydraulique, notamment pompe hydraulique comportant un rotor a palettes, pour vehicules muni de pedales.
DE102017201213A1 (de) * 2017-01-26 2018-07-26 Volkswagen Aktiengesellschaft Flügelzellenpumpe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2170786A (en) * 1937-10-27 1939-08-22 Isaac E Mcelroy Hydraulic transmission apparatus
US2458023A (en) * 1944-03-02 1949-01-04 Wilson C Pike Variable stroke pump
US3547562A (en) * 1969-02-04 1970-12-15 Chandler Evans Inc Variable displacement vane pump
US3560118A (en) * 1969-06-11 1971-02-02 Derso W Palachik Rotary motor or pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2170786A (en) * 1937-10-27 1939-08-22 Isaac E Mcelroy Hydraulic transmission apparatus
US2458023A (en) * 1944-03-02 1949-01-04 Wilson C Pike Variable stroke pump
US3547562A (en) * 1969-02-04 1970-12-15 Chandler Evans Inc Variable displacement vane pump
US3560118A (en) * 1969-06-11 1971-02-02 Derso W Palachik Rotary motor or pump

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784326A (en) * 1972-01-24 1974-01-08 Chandler Evans Inc Pressure compensated pump
US3808814A (en) * 1972-03-20 1974-05-07 R Macy Fluid transmission
US4688815A (en) * 1984-03-27 1987-08-25 Lectrolarm Custom Systems, Inc. Hydraulically driven bicycle
US5618165A (en) * 1992-04-14 1997-04-08 Ab Volvo Variable displacement and constant pressure pump
WO2001012991A1 (en) * 1999-08-13 2001-02-22 Argo-Tech Corporation Dual lobe, split ring, variable roller vane pump
US6398528B1 (en) 1999-08-13 2002-06-04 Argo-Tech Corporation Dual lobe, split ring, variable roller vane pump
US6402487B1 (en) 1999-08-13 2002-06-11 Argo-Tech Corporation Control system for variable exhaust nozzle on gas turbine engines
FR2897663A1 (fr) * 2006-02-21 2007-08-24 Olivier Gouny Dispositif hydraulique, notamment pompe hydraulique comportant un rotor a palettes, pour vehicules muni de pedales.
DE102017201213A1 (de) * 2017-01-26 2018-07-26 Volkswagen Aktiengesellschaft Flügelzellenpumpe
CN108361192A (zh) * 2017-01-26 2018-08-03 大众汽车有限公司 叶片泵

Also Published As

Publication number Publication date
FR2057828A5 (enExample) 1971-05-21
DE1939595A1 (de) 1971-02-18

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