Patent ID: 7033411

Claim:
A centrifugal separator for freeing a gaseous fluid from particles suspended therein, solid and/or liquid, having a density larger than that of the gaseous fluid, the centrifugal separator comprising: a rotor, that is rotatable about a rotational axis and has at one axial end a central inlet for said gaseous fluid, the rotor further delimiting a central space communicating with said central inlet, driving means for rotating the rotor about said rotational axis, a stationary housing which with a surrounding wall surrounds the rotor and said rotational axis and which between the rotor and the surrounding wall delimits a receiving chamber for cleaned gaseous fluid as well as separated particles, separation members which are supported by the rotor around said central space and which form several separation passages having inlet ends communicating with the central space in the rotor and outlet ends opening directly in a part of said receiving chamber between the rotor and said surrounding wall, and wherein said driving means includes several turbine members, which are supported by the rotor and arranged in a ring around the central inlet of the rotor, and at least one supply member that is adapted to receive a gaseous driving fluid and direct this towards the turbine members for rotation of the rotor about said rotational axis.