US3544245A - Fluid pumps - Google Patents

Fluid pumps Download PDF

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Publication number
US3544245A
US3544245A US765067A US3544245DA US3544245A US 3544245 A US3544245 A US 3544245A US 765067 A US765067 A US 765067A US 3544245D A US3544245D A US 3544245DA US 3544245 A US3544245 A US 3544245A
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US
United States
Prior art keywords
pumping chamber
blade
rotor
parts
blades
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
US765067A
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English (en)
Inventor
Dorian Farrar Mowbray
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.)
CAV Ltd
Original Assignee
CAV Ltd
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 CAV Ltd filed Critical CAV Ltd
Application granted granted Critical
Publication of US3544245A publication Critical patent/US3544245A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0845—Vane tracking; control therefor by mechanical means comprising elastic means, e.g. springs
    • 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
    • F01C21/089—Construction of vanes or vane holders for synchronised movement of the vanes

Definitions

  • a fluid pump in which a rotor is located within a pumping chamber and has its axis off-set ⁇ from the axis of the pumping chamber.
  • a pair of blades is slidable within grooves formed in the rotor and each blade is divided into two overlapping-parts, with resilient means being provided to urge the ends of the two parts of the blades into engagement with the peripheral surface of the pumping chamber.
  • This invention relates to iluid pumps of the kind comprising in combination, a pumping chamber having a substantially cylindrical internal peripheral surface and end walls, a rotor located in said pumping chamber, said rotor being rotatable about an axis olf-set from the axis of the pumping chamber, at least a pair of blades slidable within grooves formed in the rotor, the opposite ends of each blade co-operating with the peripheral surface of the pumping chamber and an inlet and an outlet port in communication with said chamber, and through which uid passes as the rotor rotates within the pumping chamber.
  • the object of the invention is to provide such a pump in a simple and convenient form.
  • each blade is divided into two parts and resilient means is provided to urge the ends of the two parts of the blade into engagement with the peripheral surface of the pumping chamber.
  • FIG. l is a sectional and inverted plan view of one example of a uid pump, taken on the line 1-1 of FIG. 2,
  • FIG. 2 is an end view in the direction of the arrow A of the pump shown in FIG. 1 with the end cover removed and
  • FIG. 3 is a view in the direction of the arrow A of the end cover.
  • a pump body in which is dened a substantially cylindrical pumping chamber having a peripheral boundary surface 11.
  • End closure covers 12 and 13 are provided which constitute end Walls of the pumping chamber.
  • Extending within the pumping chamber is a rotor 14 in which are formed diametrical slots or grooves 15 and 16, and the axis of rotation of the rotor is olf-set relative to the axis of the pumping chamber.
  • Mounted within the slots respectively are a pair of blades 17 and 18 having cut away portions 20, intermediate their ends.
  • the blades 17, 18 are slidably mounted within the slots and as the rotor is rotated, the portions of the pumping chamber defined between adjacent blades increase and iCC reduce in volume.
  • the pumping chamber is provided with an inlet port 21 and an outlet port 22 through which the fluid to be pumped is conveyed to and from the pumping chamber, -with these ports being formed in the end cover 12.
  • each blade is formed in two parts, with portions of the parts overlapping each other as is shown in FIG. 2.
  • each blade has a pair of leaf springs 19 which are provided to urge the parts of the blade outwardly relative to each other. In this manner the end surfaces of the blades are maintained in contact with the peripheral surface 11 of the pumping chamber.
  • each blade In order to minimize the leakage which occurs between the blades and the end walls, it is arranged that the portions of each blade are urged axially in the opposite direction. This is achieved by inclining the surfaces against which the springs 19 act, relative to the axis of rotation of the rotor. Since each blade is provided with a pair of springs, the inclination of the surfaces on the portions of the blade are such that the two springs urge the parts of the blade in the correct direction. Moreover, in order to locate the springs against axial movement, one of the surfaces is provided with a depression in which the spring is accommodated. By this arrangement, the leakage path for the fuel is staggered and this elects an improvement in the performance of the pump. It will be noted that each spring is conlined by the adjacent face of the slot 16.
  • peripheral surface of the pumping chamber when each blade is of one piece construction cannot be truly cylindrical, since the length of each blade cannot be greater than the distance measured between the opposite point of the peripheral surface in a plane at right angles to the plane containing the axis of the pumping chamber and the axis of rotation of the rotor, and the iirst mentioned plane also includes the axis of rotation of the rotor.
  • the pumping chamber may retain its original shape (as is shown) or it can be made truly cylindrical.
  • a uid pump comprising a body provided with a pumping chamber having a substantially cylindrical internal peripheral surface and end walls, a rotor located in said pumping chamber, said rotor being rotatable about an axis offset from the axis of the pumping chamber, a pair of radially extending grooves in the rotor, a pair of blades slidably located within said grooves respectively, the opposite ends of each blade cooperating with the peripheral surface of the pumping chamber, an inlet port and an outlet port in communication with said chamber and through which fluid passes as the rotor rotates within the pumping chamber, each blade being divided into two parts and resilient means acting to urge the ends of the two parts of the blade into engagement with the peripheral surface of the pumping chamber, the
  • a uid pumpy comprising a body provided with a pumping chamber having a substantially cylindrical internal peripheral surface and end walls, a rotor located in ysaid pumping chamber, said rotor being rotatable about an axis" offset from the axis of the pumping chamber, a pair ofi radially ⁇ extending grooves in the rotor,a pair of' blades slidably ⁇ located within the grooves respectively, theV opposite ends ofeach blade cooperating with the peripheral surface of the pumping chamber, an inlet port and an outlet port in communication with said pumping chamber and through which iluid passes as the rotor rotates within the pumping chamber, each blade being divided into two" parts, the partsA of each blade overlapping each other, a pair of leaf springs acting between the two parts of each blade for urging the ends of the two parts into engagement with the peripheral surface of the pumping chamber and the surfaces of the two parts of each blade between which the leaf springs act being inclined relative to the axis of rotation of the rot

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
US765067A 1967-10-09 1968-10-04 Fluid pumps Expired - Lifetime US3544245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4609167 1967-10-09

Publications (1)

Publication Number Publication Date
US3544245A true US3544245A (en) 1970-12-01

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ID=10439821

Family Applications (1)

Application Number Title Priority Date Filing Date
US765067A Expired - Lifetime US3544245A (en) 1967-10-09 1968-10-04 Fluid pumps

Country Status (4)

Country Link
US (1) US3544245A (xx)
DE (2) DE1801788A1 (xx)
FR (1) FR1587440A (xx)
GB (1) GB1231187A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087217A (en) * 1975-05-28 1978-05-02 Albert Raymond Thomas Vane support assembly for rotary type positive displacement apparatus
DE3500917A1 (de) * 1984-05-29 1985-12-05 Veb Kombinat Medizin- Und Labortechnik Leipzig, Ddr 7033 Leipzig Drehschieber-vakuumpumpe
DE3618303A1 (de) * 1985-06-15 1986-12-18 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Fluegelzellenpumpe mit hakenfoermigen fluegeln
DE4012789A1 (de) * 1990-04-21 1991-10-24 Maso Dickstoffpumpen Entwicklu Umlaufpumpe
US5073097A (en) * 1987-04-09 1991-12-17 Pipalov Aleksander G Multi-chamber rotary lobe fluid machine with positive sliding seats
US20040140322A1 (en) * 2001-02-06 2004-07-22 Pieter De Jong Dividing device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604041A (en) * 1984-04-09 1986-08-05 Barmag Barmer Maschinenfabrik Aktiengesellschaft Rotary vane pump
IT1218467B (it) * 1984-04-09 1990-04-19 Barmag Barmer Maschf Pompa ad alette e celle
DD299241A7 (de) * 1989-06-29 1992-04-09 Medizin Labortechnik Veb K Drehschieberpumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US732671A (en) * 1901-12-26 1903-06-30 John A Gaines Rotary engine.
US2829603A (en) * 1955-02-24 1958-04-08 George W Clark Fluid power device
US3268157A (en) * 1963-05-10 1966-08-23 Goetzewerke Radial packing for rotary piston machines, especially internal combustion engines
US3286699A (en) * 1963-01-05 1966-11-22 Goetzewerke Radial sealing device for rotary piston engine
US3400691A (en) * 1966-07-21 1968-09-10 Curtiss Wright Corp Seal construction for rotary combustion engines
US3447512A (en) * 1967-02-16 1969-06-03 Chrysler Corp Rotary mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US732671A (en) * 1901-12-26 1903-06-30 John A Gaines Rotary engine.
US2829603A (en) * 1955-02-24 1958-04-08 George W Clark Fluid power device
US3286699A (en) * 1963-01-05 1966-11-22 Goetzewerke Radial sealing device for rotary piston engine
US3268157A (en) * 1963-05-10 1966-08-23 Goetzewerke Radial packing for rotary piston machines, especially internal combustion engines
US3400691A (en) * 1966-07-21 1968-09-10 Curtiss Wright Corp Seal construction for rotary combustion engines
US3447512A (en) * 1967-02-16 1969-06-03 Chrysler Corp Rotary mechanism

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087217A (en) * 1975-05-28 1978-05-02 Albert Raymond Thomas Vane support assembly for rotary type positive displacement apparatus
DE3500917A1 (de) * 1984-05-29 1985-12-05 Veb Kombinat Medizin- Und Labortechnik Leipzig, Ddr 7033 Leipzig Drehschieber-vakuumpumpe
DE3618303A1 (de) * 1985-06-15 1986-12-18 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Fluegelzellenpumpe mit hakenfoermigen fluegeln
US5073097A (en) * 1987-04-09 1991-12-17 Pipalov Aleksander G Multi-chamber rotary lobe fluid machine with positive sliding seats
WO1992021856A1 (en) * 1987-04-09 1992-12-10 Pipalov Aleksander G A multi-chamber rotary lobe fluid machine with positive sliding seals
DE4012789A1 (de) * 1990-04-21 1991-10-24 Maso Dickstoffpumpen Entwicklu Umlaufpumpe
US20040140322A1 (en) * 2001-02-06 2004-07-22 Pieter De Jong Dividing device
US7037093B2 (en) * 2001-02-06 2006-05-02 De Jong Engineering Elburg B.V. Dividing device

Also Published As

Publication number Publication date
DE1801788A1 (de) 1969-10-16
FR1587440A (xx) 1970-03-20
DE6801280U (de) 1971-07-08
GB1231187A (xx) 1971-05-12

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