Patent EA-001966-B1 (EA)
Title: Rotor vane motor, pump for pumping fluid, and a combination thereof
IPC: E21B4/02
Filed: 1998-10-19
Abstract: 1. Roller vane motor with vanes as rollers driven by a fluid, comprising a housing (1) with axial ends located at opposite sides, with in between an imaginary principal axis and a rotor (2) that rotates around this principal axis in a rotor space inside the housing (1), ), with an annular space between the rotor (2) and the inner wall of the housing (1), said housing (1) being provided with a plurality of inwardly projecting wing deflector cams (5) that divide the annular space between the rotor (2) and the inner wall of the housing (1) into chambers (8a,b), said rotor (2) being provided with a plurality of recesses (6) located along the circumference of said rotor (2) and extending substantially parallel to the principal axis, each recess (6) having a cylindrical roller (7) that is displaceable from an extended position, in which the roller (7) is in contact with the inner wall of the housing (1) between wing deflector cams (5), to a retracted position, in which the roller (7) is in contact with a wing deflector cam (5), said roller (7) dividing the chambers (8a,b) into a high-pressure chamber part (8a) and a lower-pressure chamber part (8b), each wing deflector cam (5) having a rising part that runs inward from the inner wall of the housing (1) and forces a passing roller (7) from its extended position into its retracted position, and a falling part that runs outward towards the inner wall of the housing (1) and allows a passing roller (7) to move from its retracted position towards its extended position, whereby inlet ports and outlet ports for the driving fluid or the pumped fluid areprovided, that are connected to the rotor space, characterised in that the inlet and outlet ports for fluid are provided for fluid passing the fluid via chambers in a longitudinal direction. 2. Roller vane motor or pump as claimed in claim 1, characterised in that the housing (1) at one of its axial ends has a first bearing part (4) for the rotor (2), in which first bearing part (4) at or near each falling part of a wing deflector cam (5) one or more inlet ports (10) are provided, and that the housing (1) at its other axial end has a second hearing part (3) for the rotor (2), in which second bearing part (3) at or near each rising part of a wing deflector cam (5) one or more outlet ports (9) (9) are provided. 3. Roller vane motor as claimed in claim 1 or 2, characterised in that the rotor (2) is provided with a central conduit (13) that is separated from the rotor space and runs the length of the rotor (2) to provide a passage for the driving fluid between the axial ends of the housing (1). 4. Roller vane motor as claimed in claim 1, characterised in that the rotor (2) is provided with a central conduit (13) that is connected with the rotor space by means of inlet ports (14) to the recesses (6) in the rotor (2) for the supply of driving fluid to the rotor space. 5. Roller vane motor as claimed in claim 4, characterised in that the central conduit (13) has been blocked. 6. Roller vane motor as claimed in claim 1, characterised in that the housing (1) at one of its axial ends has a first bearing part (4) for the rotor (2) in which first bearing part (4) at or near each falling part of a wing deflector cam (5) one or more inlet ports (10) are provided, and that the housing (1) at its other axial end has a second bearing part (3) for the rotor (2), and that the housing (1) at or near each rising part of a wing deflector cam (5) is provided with one or more outlet ports (11) that debouch into the outer surface of the housing (1) between its axial ends for the discharge of driving fluid from the rotor space, and that the rotor (2) is provided with a central conduit (13) that is separated from the rotor space and runs through the length of the rotor (2) to provide a passage for the driving fluid between the axial ends of the housing (1). 7. Roller vane motor as claimed in claim 1, intended for driving a drill bit, characterised in that the housing (1) at one of its axial ends has a first bearing part (4) for the rotor (2), that the rotor (2) at the side of the first bearing part (4) is provided with a central inlet conduit (13) that is connected with the rotor space by means of inlet ports (14) to the recesses (6) in the rotor (2) for the supply of driving fluid to the rotor space, that the housing (1) has a second bearing part (3) for the rotor (2), and that the housing (1) at or near each rising part of a wing deflector cam (5) is provided with one or more outlet ports (11) that are connected with the rotor space and a connecting channel outside the second bearing part (3), which connecting channel is connected with an internal outlet conduit in the part of the rotor (2) that serves for attaching the drill bit. 8. Roller vane motor as claimed in claim 7, characterised in that the inlet conduit (13) and the outlet conduit are connected inside the rotor (2). 9. Roller vane motor as claimed in claims 3, 4, 6 or 8, characterised in that a regulator is provided for regulating the amount of driving fluid that flows through the conduit in the rotor (2) on the one hand and the amount of driving fluid that flows through the rotor space on the other hand. 10. Roller vane pump as claimed in claim 1, characterised in that the outlet ports (14') are located in the recesses (6) in the rotor (2) and are connected with an outlet conduit (13) in the rotor (2). 11. Roller vane motor with vanes as rollers driven by a fluid, comprising a housing (1) with axial ends located at opposite sides, with in between an imaginary principal axis, and a rotor (2) that rotates around this principal axis in a rotor space inside the housing (1), with an annular space between the rotor (2) and the inner wall of the housing (1), said housing (1) being provided with a plurality of inwardly projecting wing deflector cams (5) that divide the annular space between the rotor (2) and the inner wall of the housing (1) into chambers (8a,b), said rotor (2) being provided with a plurality of recesses (6) located along the circumference of said rotor (2) and extending substantially parallel to the principal axis, each recess (6) having a cylindrical roller (7) that is displaceable from an extended position, in which the roller (7) is in contact with the inner wall of the housing (1) between wing deflector cams (5), to a retracted position, in which the roller (7) is in contact with a wing deflector cam (5), said roller (7) dividing the chambers (8a,b) into a high-pressure clamber part (8a) and a lowerpressure chamber part (8b), each wing deflector cam (5) having a rising part that runs inward from the inner wall of the housing (1) and forces a passing roller (7) from its extended position into its retracted position, and a falling part that runs outward towards the inner wall of the housing (1) and allows a passing roller (7) to move from its retracted position towards its extended position, whereby inlet ports for the driving fluid or the pumped fluid are provided, that are connected to the rotor space, characterised in that the housing (1) at one of its axial ends has a first bearing part (4) for the rotor (2), in which first bearing part (4) at or near each falling part of a wing deflector cam (5) one or more inlet ports (10) are provided, and that the housing (1) at its other axial end has a second bearing part (3) for the rotor (2), and that at or near each rising part of a wing deflector cam (5) one or more outlet ports (11) are provided that debouch into the outer surface of the housing (1) between its axial ends. 12. Roller vane pump as claimed in any of the preceding claims, characterised in that at the falling part of each wing deflector cam (5) a first passage is provided that, during the movement of a roller (7) down this falling part from the retracted position to the extended position, forms an open connection between the chamber part that is situated ahead of said roller (7) and the chamber part that is situated behind said roller (7). 13. Roller vane pump as claimed in any of the preceding claims, characterised in that at the rising part of each wing clef let t or cam (5) a second passage is provided that, during the movement of a roller (7) up this rising part from the extended position to the retracted position, forms an open connection between the chamber part that is situated ahead of said roller (7) and the chamber part that is situated behind said roller (7). 14. Roller vane motor as claimed in claim 12 or 13, characterised in that at the rising part of each wing clef let t or cam (5) a second passage is provided that, during the movement of a roller (7) up this rising part from the extended position to the retracted position, forms an open connection between the chamber part that is situated ahead of said roller (7) and the chamber part that is situated behind said roller (7). 15. Roller vane motor as claimed in claims 12 to 14, characterised in that the first passage is formed by a mouth that is connected with the rotor space and with an inlet port (9',10), said mouth covering at least part of the width of the falling part of the wing deflector cam (5) in addition to an adjacent part of the concentric part of said wing deflector cam (5). 16. Roller vane motor as claimed in claim 14 or 15, characterised in that the mouth that is connected with inlet and/or outlet ports (10,10',9,9') is obtained by shortening the rising or falling part concerned of the wing deflector cam (5) in addition to shortening the adjacent part of the concentric part of said wing deflector cam (5). 17. Roller vane motor as claimed in one or more of claims 14 to 16, characterised in that the inlet and/or outlet ports (10,10',9,9') are provided in bearing parts for the rotor (2) and are located partly or wholly between the edge of the rising/falling part of the wing deflector cams (5) and the inner wall of the housing (1). 18. Roller vane motor or roller vane pump as claimed in claim