Helical trochoidal rotary machines with offset
AssigneeRotoliptic Technologies Incorporated
InventorsGreg John Montie, Bryan Allen Callaway
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Abstract
Rotary positive displacement machines based on trochoidal geometry, that comprise a helical rotor that undergoes planetary motion within a helical stator are described. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides structural and/or operational advantages in the rotary machine.
Claims24
A rotary machine comprising a stator having a stator length and a stator axis, and a rotor having a rotor length and a rotor axis, said rotor disposed within said stator,
- said rotor, along at least a portion of said rotor length, having a helical rotor profile and a rotor shape at any cross-section transverse to said rotor axis that is inwardly offset from a hypotrochoidal shape,
- said stator, along at least a portion of said stator length having a helical stator profile and a stator shape at any cross-section transverse to said stator axis that is an outer envelope formed when said rotor shape undergoes planetary motion,
- wherein said rotor is configured to undergo planetary motion within said stator.
A rotary machine comprising a stator having a stator length and a stator axis, and a rotor having a rotor length and a rotor axis, said rotor disposed within said stator, said rotary machine having a plurality of fluid chambers between cooperating surfaces of said rotor and said stator,
- said rotor, along substantially the entire said rotor length, having a helical rotor profile and a rotor shape at any cross-section transverse to said rotor axis that is inwardly offset from an elliptical shape,
- said stator, along substantially the entire said stator length, having a helical stator profile and a stator shape at any cross-section transverse to said stator axis that is an outer envelope formed when said rotor shape undergoes planetary motion,
- wherein said rotor is configured to undergo planetary motion within said stator.
Dependencies are inferred from the claim text.