Patent ID: 9376914
Filing Date: 2016-06-28
CPC Classification: F01C

Claim Text:
1. A rotary machine in the form of an expander, comprising a housing having an internally cylindrical cavity and respective end covers, inlet and outlet ducts arranged in the housing and communicating with the cavity, a rotor received and supported in the housing and having a rotor axis (A), at least one vane movably received in respective grooves in the rotor, each vane being articulately connected about an axis (C) to one end of a control arm and in the other end being rotatable supported in a shaft having a central axis (B) coincident with the axis (B) extending centrally through the cavity in the housing wherein the axis (B) is parallel with and spaced apart a distance (d) from the rotor axis, (A), each vane tip describes a cylinder surface sector having its center of curvature in the axis through the joint that connects a vane with a control arm, at least one working chamber which is part of the cavity and is defined between an internal peripheral surface of the housing, a peripheral surface of the rotor and a side surface of the at least one vane, wherein the rotor itself comprises a unit for power output, wherein the rotor is designed as a reel structure configuration having respective radially extending flange portions, the flange portions are co-rotatable with the at least one vane, and against which the respective end surfaces of the at least one vanes act, and that said radially extending flange portions extend beyond the diameter of the cavity of a cylindrical intermediate section of the housing to form a labyrinth seal with respective end covers at each end of the internal cylindrical intermediate portion of the housing.