Rotating device having an axial magnetical thrust bearing and radial levitating means

摘要

The rotary machine has a stator (1) which incorporates a number of suction apertures (3) and a discharge outlet (4). The rotor (2) on the same axis (delta) is driven by a permanent-magnet synchronous motor and suspended magnetically by the active axial abutment and two offset radial bearings. The fixed and moving parts (10,11) of the magnetic circuit are sepd. by two parallel plane air gaps (12,12A). Each part has a U-shaped cross-section and the open ends face each other. A coil (16) is housed in the internal annular space of the fixed part. A motor winding connected to it has four coils (e.g. 22,24) in the annular space within the moving part, cooperating with permanent magnets (e.g. 19,21).