Back to results
US 6,887,057 B2Granted
Minimal contact seal positive displacement device method and apparatus
AssigneeOutland Technologies (USA), Inc.
InventorJames B. Klassen
Life of this patent
Estimating the term…
Abstract
A positive displacement device that incorporates two rotors that are offset from collinear and each comprising a first and second set of vanes where the engagement surfaces of the first set of vanes are adapted to only engage when the rotors are in the top dead center location and the second set of lobes of each rotor only engage one another at the bottom dead center position of rotataion.
Claims37
A method of increasing the pressure of a fluid comprising the steps of:
- retrieving a rotor set comprising a first and second rotor that are mounted about an axis of rotation that is offset from being colinear and the rotors having a top dead center location and a bottom dead center location where the each rotor has a first set of vanes and a second set of vanes where the first set of vanes have engagement surfaces that are located in the longitudinally forward location of each rotor and the engagement surfaces of the vanes of the opposing first and second rotors are adapted to engage one another only at the top dead center location, the rotors each further comprising a second set of vanes where each vane has an engagement surface where opposing vane of the second set of vanes on the first and second rotor is only in engagement at the bottom dead center location, the volume between the first and second rotors defines chamber regions,
- positioning the rotors in a casing where the casing has an inner surface that engages an outer surface of the rotors at the bottom dead center and top dead center locations where a first lateral surface of the casing defines an inlet port and a second lateral surface defines an outlet port, providing communication from the inlet port to the fluid and rotating the rotors so the chamber regions in communication with the inlet port are expanding, passing the fluid past the top dead center location where two adjacent engaged enagement surfaces of opposing vanes of the first set of vanes for the first and second rotors and the inner wall of the casing creates a seal from the outlet port and the inlet port and discharging a portion of the fluid to the outlet port and two adjacent engaged enagement surfaces of opposing vanes of the second set of vanes for the first and second rotors and the inner surface of the casing at the bottom dead center location further provides a seal from the outlet port to the inlet port.
A device to convert energy comprising:
- a first rotor having an axis of rotation and the first rotor is adapted to rotate about said axis of rotation and having a longitudinal forward location and longitudinal rearward location, a first set of vanes having engagement surfaces located in the longitudinal forward region, a second set of vanes having engagement surfaces that are located in a longitudinally rearward location, an outer surface that partially forms a sphere;
- a second rotor having an axis of rotation and adapted to rotate about said axis of rotation and having a longitudinal forward location and longitudinal rearward location, a first set of vanes having engagement surfaces located in the longitudinal forward region, a second set of vanes having engagement surfaces that are located in a longitudinally rearward location, an outer surface that partially forms a sphere;
- a casing that is adapted to house the said first rotor and the second rotor and having a top dead center location and a bottom dead center location, the casing comprising a first lateral region and a second lateral region where an inlet port is provided in the said first lateral region that provides communication to the said first and second rotor and an outlet port in the second lateral region that is in communication to the first and second rotors;
- whereas the first and second rotors are offset from being collinear by an angle alpha where the engagement surfaces of the first set of vanes of the first rotor are adapted to engage the engagement surfaces of the first set of vanes of the second rotor at the said top dead center location and the engagement surfaces of the second set of vanes of the first rotor are adapted to engage the engagement surfaces of the second set of vanes of the second rotor at the bottom dead center location the engagement surfaces of the first and second set of vanes of the first and second rotors are not in engagement when located in the first and second lateral regions.
1 more element
A pump that is adapted to increase the pressure of an operating fluid, pump comprising:
- a first rotor having an axis of rotation and the first rotor is adapted to rotate about said axis of rotation and having a longitudinal forward location and longitudinal rearward location, a first set of vanes having engagement surfaces located in the longitudinal forward region, a second set of vanes having engagement surfaces that are located in a longitudinally rearward location, an outer surface that partially forms a sphere;
- a second rotor having an axis of rotation and adapted to rotate about said axis of rotation and having a longitudinal forward location and longitudinal rearward location, a first set of vanes having engagement surfaces located in the longitudinal forward region, a second set of vanes having engagement surfaces that are located in a longitudinally rearward location, an outer surface that partially forms a sphere;
- a casing that is adapted to house the said first rotor and the second rotor and having a top dead center location and a bottom dead center location, the casing comprising a first lateral region and a second lateral region where an inlet port is provided in the said first lateral region that provides communication to the said first and second rotor and an outlet port in the second lateral region that is in communication to the first and second rotors and the casing at the top dead center and bottom dead center location engages the outer surfaces of the first and second rotor to provide a seal from the inlet port to the outlet port;
- whereas the first and second rotors are offset from being collinear by an angle alpha where the engagement surfaces of the first set of vanes of the first rotor are adapted to engage the engagement surfaces of the first set of vanes of the second rotor at the said top dead center location and the engagement surfaces of the second set of vanes of the first rotor are adapted to engage the engagement surfaces of the second set of vanes of the second rotor at the bottom dead center location the engagement surfaces of the first and second set of vanes of the first and second rotors are not in engagement when located in the first and second lateral regions.
1 more element
Dependencies are inferred from the claim text.