Rotary pump with hydraulic vane actuation
First Claim
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1. A sliding vane rotary pump for pumping a pumpage, comprising:
- a pump housing defining a primary chamber and a secondary chamber;
a rotor assembly mounted within said housing for rotation about an axis, said rotor assembly including a rotor and a plurality of vanes carried by said rotor, said vanes adapted to move through said primary chamber and said secondary chamber as said rotor assembly rotates, said primary chamber and said secondary chamber shaped such that said vanes actuate as said rotor assembly rotates, said secondary chamber containing a fixed volume of pumpage; and
fixed-volume actuation means for using said fixed volume of pumpage in said secondary chamber to actuate a vane.
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Abstract
A sliding vane rotary pump having fixed volume hydraulic vane actuation. The pump generally includes a rotor assembly rotatably positioned within a rotor chamber to define at least one pumping chamber. The pumping chamber is divided into a primary chamber and a secondary chamber. The axial walls of the rotor chamber define a plurality of transfer grooves and the rotor defines a plurality of rotor transfer holes. The rotor transfer holes and transfer grooves are arranged to provide a flow path from the secondary chamber to the vane slot of an extending vane each time a vane travels through the secondary chamber.
37 Citations
30 Claims
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1. A sliding vane rotary pump for pumping a pumpage, comprising:
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a pump housing defining a primary chamber and a secondary chamber; a rotor assembly mounted within said housing for rotation about an axis, said rotor assembly including a rotor and a plurality of vanes carried by said rotor, said vanes adapted to move through said primary chamber and said secondary chamber as said rotor assembly rotates, said primary chamber and said secondary chamber shaped such that said vanes actuate as said rotor assembly rotates, said secondary chamber containing a fixed volume of pumpage; and fixed-volume actuation means for using said fixed volume of pumpage in said secondary chamber to actuate a vane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17, 18, 19)
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8. A rotary pump, comprising;
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a housing defining a pumping chamber, said pumping chamber including a primary chamber and a secondary chamber; a rotor assembly rotatably mounted within said housing, said rotor assembly including a rotor and a plurality of vanes, said rotor defining a plurality of vane slots, each of said vanes slidably mounted within one of said vane slots, said vanes dividing said pumping chamber into a plurality of cavities which travel through said pumping chamber as said rotor assembly rotates, each of said cavities defined by a leading vane and a trailing vane, said vanes adapted to extend and retract and said cavities adapted to expand and contract as said rotor assembly rotates within said housing, each contracting cavity containing a fixed volume of pumpage when said trailing vane of said contracting cavity enters said secondary chamber; and fixed-volume hydraulic actuation means for moving said fixed volume of pumpage from said contracting cavity into vane slots beneath an extending vane as said contracting cavity moves through said secondary chamber.
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9. A rotary pump, comprising:
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a housing defining a pumping chamber, said pumping chamber including a primary chamber and a secondary chamber, said housing defining a discharge, said discharge dividing said pumping chamber into said primary chamber and said secondary chamber; a rotor assembly rotatably mounted within said housing, said rotor assembly including a rotor and a plurality of vanes, said rotor defining a plurality of vane slots, each of said vanes slidably mounted within one of said vane slots, said vanes dividing said pumping chamber into a plurality of cavities which travel through said pumping chamber as said rotor assembly rotates, said vanes adapted to extend and retract and said cavities adapted to expand and contract as said rotor assembly rotates within said housing; and fixed-volume hydraulic actuation means for moving pumpage from a contracting cavity into a vane slot beneath an extending vane as said contracting cavity moves through said secondary chamber. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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20. A pump comprising:
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a housing defining a rotor chamber and a discharge; and a rotor assembly rotatably mounted within said rotor chamber, said rotor assembly dividing said rotor chamber into a pair of radially opposed pumping chambers, said discharge dividing at least one of said pumping chambers into a primary chamber and a secondary chamber, said rotor assembly including a rotor and a plurality of vanes, said rotor defining a plurality of vane slots each slidably receiving one of said vanes, said vanes dividing said rotor chamber into a plurality of distinct cavities which rotate with said rotor and travel through said pumping chambers, said cavities adapted to expand and contract and said vanes adapted to extend and retract as said rotor rotates; and a flow path from said secondary chamber to a vane slot of an extending vane whereby pumpage from a contracting cavity moving through said secondary chamber moves from said secondary chamber into said vane slot of said extending vane. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification