Reciprocating variable displacement rotary vane machine

Rotary expansible chamber devices – With changeable working chamber magnitude – By axial movement of movable member

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Details

418 1, 418 26, F01C 2116

Patent

active

056740590

ABSTRACT:
An first rotor and an second rotor rotate about a longitudinal axis in a housing. The second rotor moves longitudinally relative to the first rotor. Rotor vanes extend outward from the rotors and are longitudinally split into longitudinally extending second vanes and longitudinally extending first vanes that slide longitudinally relative to one another. The second vanes travel longitudinally with the second rotor relative to the first rotor, and the second vanes slide relative to the first vanes that remain with the first rotor. The second rotor and the second vanes move longitudinally toward and away from a recess defined by the first rotor such that the active surface area of the rotor vanes is varied. When the second vanes slide away from the first vanes, surfaces of the first vanes are exposed that reciprocate into and out of specially defined chambers in a pump-like fashion. A movable element is connected to and extends from the second rotor. The movable element interposed between the variable displacement chamber that the second rotor operates in and another chamber such that when a change in the differential pressure between those chambers occurs, the movable element moves the second rotor such that the displacements of the variable displacement chambers is varied in an automatic feedback fashion.

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