Granted Patent B2

US 12,352,268 · App. 18/346,234 · Granted Jul 8, 2025

Inventors: Greg John Montie (Squamish, CA); Peter Thomas Christopher Suke (Squamish, CA); Rogan David Milatz (Squamish, CA); Robert John Charles Pearson (Squamish, CA); Braden Adam Murphy (Calgary, CA)

Assignee: Rotoliptic Technologies Incorporated

F04C2/1076F04C2250/20F04C2250/30

Abstract

Claims (32)

1. A rotary machine comprising a stator having a stator cavity and a rotor disposed within said stator cavity,

said rotor having a rotor helical profile, and a rotor axis, and having a rotor shape in cross-section transverse to said rotor axis along at least a portion of a length of said rotor that is a teardrop shape,

said stator cavity having a stator helical profile, a stator axis, and having a stator shape at any cross-section transverse to said stator axis along at least a portion of a length of said stator cavity that is an outer envelope formed when said teardrop shape undergoes planetary motion,

wherein said rotary machine is configured so that, in operation of said rotary machine, said rotor undergoes planetary motion relative to said stator, and

wherein said stator shape is an outwardly-offset ellipse, and said rotary machine has a geometry characterized by a radius R, an offset O and an eccentricity E, wherein E is the distance between said rotor axis and said stator axis, O is greater than zero, R is greater than E, and R+O≥3E.

2. The rotary machine of claim 1 further comprising a helical dynamic rotor seal mounted on said rotor.

3. The rotary machine of claim 1 wherein said rotary machine is configured so that, in operation of said rotary machine, said rotor spins about said rotor axis and orbits about said stator axis within said stator cavity.

4. The rotary machine of claim 1 wherein said rotary machine is a multi-stage machine having a plurality of chambers between cooperating fluid-facing surfaces of said rotor and said stator.

5. The rotary machine of claim 4 wherein each of said plurality of chambers has approximately the same volume.

6. The rotary machine of claim 4 wherein said rotary machine is a pump.

7. The rotary machine of claim 4 wherein each of said plurality of chambers has a different volume.

8. The rotary machine of claim 1 further comprising a helical dynamic rotor seal mounted on said rotor, said helical dynamic rotor seal comprising bristles extending from a fluid-facing surface thereof.

9. A rotary machine comprising a stator having a stator cavity and a rotor disposed within said stator cavity,

said rotor having a rotor helical profile, and a rotor axis, and having a rotor shape in cross-section transverse to said rotor axis along at least a portion of a length of said rotor that is a teardrop shape,

said stator cavity having a stator helical profile, a stator axis, and having a stator shape at any cross-section transverse to said stator axis along at least a portion of a length of said stator cavity that is an outer envelope formed when said teardrop shape undergoes planetary motion,

wherein said rotary machine is configured so that, in operation of said rotary machine, said rotor undergoes planetary motion relative to said stator, and

wherein said stator shape is an outwardly-offset ellipse, and said rotary machine has a geometry characterized by a radius R, an offset O and an eccentricity E, wherein E is the distance between said rotor axis and said stator axis, O is greater than zero, R is greater than E, and R+O=3E.

10. The rotary machine of claim 9 further comprising a helical dynamic rotor seal mounted on said rotor.

11. The rotary machine of claim 9 wherein said rotary machine is configured so that, in operation of said rotary machine, said rotor spins about said rotor axis and orbits about said stator axis within said stator cavity.

12. The rotary machine of claim 9 wherein said rotary machine is a multi-stage machine having a plurality of chambers between cooperating fluid-facing surfaces of said rotor and said stator.

13. The rotary machine of claim 12 wherein each of said plurality of chambers has approximately the same volume.

14. The rotary machine of claim 12 wherein said rotary machine is a pump.

15. A rotary machine comprising a stator having a stator cavity and a rotor disposed within said stator cavity,

said rotor having a rotor helical profile, and a rotor axis, and having a rotor shape in cross-section transverse to said rotor axis along at least a portion of a length of said rotor that is a teardrop shape,

said stator cavity having a stator helical profile, a stator axis, and having a stator shape at any cross-section transverse to said stator axis along at least a portion of a length of said stator cavity that is an outer envelope formed when said teardrop shape undergoes planetary motion,

wherein said rotary machine is configured so that, in operation of said rotary machine, said rotor undergoes planetary motion relative to said stator, and

wherein said stator shape is an outwardly-offset ellipse, and said rotary machine has a geometry characterized by a radius R, an offset O and an eccentricity E, wherein E is the distance between said rotor axis and said stator axis, O is greater than zero, R is greater than E, and R+O>3E.

16. The rotary machine of claim 15 further comprising a helical dynamic rotor seal mounted on said rotor.

17. The rotary machine of claim 15 wherein said rotary machine is configured so that, in operation of said rotary machine, said rotor spins about said rotor axis and orbits about said stator axis within said stator cavity.

18. The rotary machine of claim 15 wherein said rotary machine is a multi-stage machine having a plurality of chambers between cooperating fluid-facing surfaces of said rotor and said stator.

19. The rotary machine of claim 18 wherein each of said plurality of chambers has approximately the same volume.

20. The rotary machine of claim 18 wherein said rotary machine is a pump.

Assignments (1)

Continuity (4)

References Cited (186)