Patent ID: 11939870
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A gas-cycle system operable using a Bell-Coleman cycle, the gas-cycle system comprising:
an expander and a compressor, the expander and compressor each comprising a rotor assembly configured to define a zone which changes continuously in volume during a rotation cycle of the rotor assembly, the expander and compressor being drivingly interconnected whereby rotational drive applied to one is transmitted directly to the other, the rotor assembly of each of the expander and the compressor comprises an inner rotor and an outer rotor being a counterpart of the inner rotor; and
a boundary surface of the zone being movable to vary a swept volume of the zone defined between the inner rotor and the outer rotor to affect a variation of the volume of the zone, the boundary surface being an outer wall that defines the zone, the outer wall being axially movable towards and away from the zone by an actuator.