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US 6,497,557 B2Granted
Sliding vane pump
AssigneeDelphi Technologies, Inc.
InventorsDavid R. Aden, Thomas C. Rytlewski, Jerrod M. Etienne, David Fredrick Hammerbacher, Bruce Alan Tucker, Roy William Heath
Life of this patent
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Abstract
A sliding vane pump comprising a rotor housing having a pumping chamber, a rotor in the pumping chamber having a plurality of radially disposed slots, and a plurality of sliding vanes disposed in the slots configured to extend to follow an inner wall of said pumping chamber.
Claims36
A pump comprising:
- a rotor housing having a pumping chamber;
- a rotor in said pumping chamber, said rotor having a plurality of radially disposed slots;
- a plurality of sliding vanes disposed in said slots, said sliding vanes configured to extend to follow an inner wall of said pumping chamber;
- said pumping chamber having at least two internal inlet ports and at least two internal discharge ports, said internal inlet ports, internal discharge ports, rotor, and vanes all configured to pump fluid from said internal inlet ports to said internal discharge ports as said rotor rotates within said pumping chamber;
- a discharge housing fixedly attached to said rotor housing, said discharge housing being in communication with said internal discharge ports and providing at least two external discharge ports, said discharge housing having fluid paths passing all the fluid from one of said internal discharge ports to one of said external discharge ports such that all the fluid exiting said pumping chamber through said one of said internal discharge ports passes through said one of said external discharge ports, said discharge housing including additional fluid paths passing all of said fluid from a second of said internal discharge ports through one of said first external discharge ports and a second of said external discharge ports.
2 more elements
A pump comprising:
- a rotor housing having a pumping chamber;
- a rotor in said pumping chamber, said rotor having a plurality of radially disposed slots;
- a plurality of sliding vanes disposed in said slots, said sliding vanes configured to extend to follow an inner wall of said pumping chamber;
- said pumping chamber having at least two internal inlet ports and at least two internal discharge ports, said internal inlet ports, internal discharge ports, rotor, and vanes all configured to pump fluid from said internal inlet ports to said internal discharge ports as said rotor rotates within said pumping chamber;
- and
- wherein said rotor contains n slots, and said slots are located such that no angles between the first set of n/2 consecutive adjacent slots are duplicated within the first set of n/2 slots.
3 more elements
A pump comprising:
- a rotor housing having a pumping chamber;
- a rotor in said pumping chamber, said rotor having a plurality of radially disposed slots;
- a plurality of sliding vanes disposed in said slots, said sliding vanes configured to extend to follow an inner wall of said pumping chamber;
- said pumping chamber having at least two internal inlet ports and at least two internal discharge ports, said internal inlet ports, internal discharge ports, rotor, and vanes all configured to pump fluid from said internal inlet ports to said internal discharge ports as said rotor rotates within said pumping chamber;
- wherein said pumping chamber is defined by a pressure plate on one side of said rotor, said pressure plate being disposed generally perpendicularly to an axis of rotation of said rotor, a thrust plate on an opposite side of said rotor, said thrust plate disposed generally perpendicularly to said axis of rotation of said rotor, and a pump ring disposed between said thrust plate and said pressure plate and surrounding said rotor;
- said pump ring having at least two inlet notches circumferentially spaced apart, each said notch defining at least part of a corresponding one of said inlet ports;
- and
- each said inlet notch extending circumferentially at least 60 degrees around said pump ring.
5 more elements
A pumping system comprising:
- a pump having at least one inlet and a plurality of substantially pressure-independent discharge ports;
- a first flow path extending from a low pressure reservoir to said at least one inlet;
- a second flow path extending from a first one of said discharge ports to a load, said load discharging said fluid to said low pressure reservoir;
- a third flow path extending from a second one of said discharge ports to a valve,
- a fourth flow path extending from said valve to said load;
- a fifth flow path extending from said valve to a low pressure location upstream from said inlet;
- and
- wherein said valve is operable to connect said third flow path to said fourth flow path and said fifth flow path.
5 more elements
Dependencies are inferred from the claim text.