Fan rotor for a radial fan

摘要

The rotor has a hub (12) connected via shell-shaped part (18) to a ring (14,16) with fan blades (20,26). The intermediate connection part has at least one shoulder (34) with a flat plash surface (36), which is at right angles to the rotor axis. The shoulder is rotary-symmetrical and is created by forming the intermediate part. The shoulder is at an average radial distance (r) from the rotary axis, which corresponds to approx. 1/3 of the rotor radius (R).