Radial vane rotary device

A four-cycle rotary internal combustion engine comprising:

• an external stator portion defining an internal volume having a peripheral wall portion having a substantially elliptical transverse cross-section, a front end wall portion and a back end wall portion, the front end wall portion comprising a central throughhole therethrough;
• an internal stator portion comprising an axial cylindrical protrusion projecting inwardly from the back end wall portion and concentrically aligned with the internal volume, the internal stator comprising at least one inlet passageway communicating with at least one peripheral port;
• a rotor assembly rotatably mounted within the internal volume, the rotor assembly comprising a block having a central bore rotatably enclosing the internal stator portion, the rotor further comprising
• circumferentially spaced, radially slidable vanes disposed in respective slots;
• radial compartments, wherein
• each of the radial compartments is disposed between two of the slots,
• each of the radial compartments is open to a peripheral surface of the block, and
• each of the compartments has a respective inner opening through the peripheral wall of the central bore, each of the inner openings communicating with the at least one peripheral port at least once during the course of each rotation of the rotor block;
• and
• an end shaft protruding outwardly from one end of the rotor block through the central throughhole in the front end wall portion.

A rotary pump comprising:

• an external stator portion defining an interior volume having a substantially elliptical shape transverse to an axis of rotation, a front end wall portion and a back end wall portion, the front end wall portion comprising a central throughhole;
• an internal stator portion comprising an axial cylindrical protrusion projecting inwardly from the back end wall portion, the cylindrical protrusion concentrically aligned with the interior volume, the internal stator comprising at least one inlet passageway communicating with at least two diametrically opposed peripheral ports;
• a rotor assembly rotatably mounted within an annular chamber defined by the external stator portion and the internal stator portion, the rotor assembly comprising:
• a block having a central bore rotatably enclosing the internal stator portion;
• circumferentially spaced, radially slidable vanes disposed in respective slots;
• and
• radial compartments circumferentially disposed in alternation with the slots;
• wherein
• each of the radial compartments has a respective inner opening through the peripheral wall of the central bore, and
• each of the inner openings communicates with each of the at least two diametrically opposed peripheral ports exactly once during the course of each rotation of the rotor assembly;
• and
• wherein the rotor assembly further comprises an end shaft protruding outwardly from the block through the central throughhole in the front end wall portion.

A rotary expander device having an axis of rotation, the device comprising a rotor assembly concentrically mounted within an annular chamber defined by an external stator portion and an axially projecting cylindrical internal stator portion, an inner wall of the external stator portion comprising a substantially elliptical cross section transverse to the axis, the internal stator portion comprising at least one inlet passageway communicating with at least two diametrically opposed peripheral ports;

• wherein
• the rotor assembly comprises:
• a block having a central bore rotatably enclosing the internal stator portion and an end shaft protruding through a central throughhole in one end of the external stator;
• circumferentially spaced, radially disposed slidable vanes received in respective slots;
• and
• radial compartments, wherein
• each of the radial compartments is disposed between two of the slots,
• each of the radial compartments has a respective outer end open to a peripheral surface of the block, and
• each of the radial compartments has a respective inner opening communicating with the central bore, each of the inner openings communicating exactly once with each of the at least two diametrically opposed peripheral ports in the internal stator portion during the course of each rotation of the block.

A fluid-driven pump comprising:

• a rotor assembly concentrically mounted within an annular chamber defined by an external stator portion having an inner wall having a substantially elliptical shape transverse to an axis of rotation of the rotor and an axially projecting cylindrical internal stator portion;
• the internal stator portion comprising at least first and second inlet passageways, each of the inlet passageways communicating with a respective source of a respective fluid;
• the rotor assembly comprising:
• a block having a central bore rotatably enclosing the internal stator portion and an end shaft protruding through an axial hole in an end of the external stator;
• circumferentially spaced, radially disposed slidable vanes, each received in a respective slot;
• radial compartments, each of the radial compartments disposed between two respective ones of the slots, each of the radial compartments having a respective inner opening to the central bore, each of the openings alternatively communicating with the first and second inlet ports in the internal stator portion.

A two-cycle internal combustion engine comprising:

• an output shaft extending along an axis of rotation from a rotor block;
• an external stator portion having a cylindrical interior wall disposed about a cylinder axis parallel to and radially spaced apart from the axis of rotation, a front end wall portion perpendicular to the cylinder axis and to the axis of rotation, and a back end wall portion perpendicular to the cylinder axis and to the axis of rotation, the front end wall portion comprising a throughhole coaxial with the axis of rotation;
• an internal stator portion comprising a cylindrical protrusion projecting inwardly from the back end wall portion along the axis of rotation, the internal stator comprising at least one inlet passageway communicating with at least one peripheral port;
• a rotor assembly rotatably mounted within the annular chamber defined by the external stator portion and the internal stator portion, the rotor assembly comprising:
• the rotor block having a central bore rotatably and concentrically enclosing the internal stator portion;
• circumferentially spaced, radially disposed slidable vanes, each vane received in a respective slot;
• and
• radial compartments, each of the radial compartments disposed between two respective ones of the slots, each of the radial compartments having a respective inner opening through the peripheral wall of the central bore communicating with the at least one peripheral port once during the course of each rotation of the rotor.

A rotary pump comprising:

• a shaft extending along an axis of rotation from a rotor block;
• an external stator portion having a cylindrical interior wall disposed about a cylinder axis parallel to and radially spaced apart from the axis of rotation, a front end wall portion perpendicular to the cylinder axis and to the axis of rotation, and a back end wall portion perpendicular to the cylinder axis and to the axis of rotation, the front end wall portion comprising a throughhole coaxial with the axis of rotation;
• an internal stator portion comprising a cylindrical protrusion projecting inwardly from the back end wall portion along the axis of rotation, said internal stator portion comprising at least one inlet passageway leading to at least one peripheral port;
• a rotor assembly rotatably mounted within the annular chamber defined by the external stator portion and the internal stator portion, said rotor assembly comprising:
• the rotor block having a central bore rotatably and concentrically enclosing the internal stator portion;
• circumferentially spaced, radially disposed slidable vanes, each of the circumferentially spaced, radially disposed slidable vanes received in a respective slot;
• and
• radial open-ended compartments, each of the radial open-ended compartments disposed between a respective two of the slots, each of the radial open-ended compartments having a respective inner opening through the peripheral wall of the central bore communicating with the at least one peripheral port.

A radial vane rotary power device operable as one of a fluid-driven motor and a rotary expander, the device comprising a stator and a rotor assembly rotatable about an axis of rotation of an end shaft protruding through one end of the stator;

• the stator defining a chamber extending between an external stator portion having an inner wall having a substantially circular transverse cross-sectional shape when viewed in a section taken perpendicular to the axis of rotation, and a cylindrical internal stator portion having an axis that is coaxial with the axis of rotation and spaced apart from a center of the circular shape of the inner wall of the external portion, the internal stator portion comprising at least one passageway communicating with at least one intake port;
• the rotor assembly comprising:
• a block having a central bore rotatably enclosing the internal stator portion;
• circumferentially spaced, radially disposed slidable vanes, each of the radially disposed slidable vanes received in a respective slot;
• and
• radial open-ended compartments disposed so that each of the radial open-ended compartments is disposed between two respective ones of the slots, each of the radial open-ended compartments having a respective inner opening to the central bore communicating with the at least one intake port in the internal stator portion.