Radial impeller for ventilator, in particular made of plastic

摘要

The radial fan impeller (1) of plastic has a number of vanes (3) installed between two rings (3). The blades are constructed as hollow profiles with ribs (5) provided between the two walls of the vanes and perpendicularly to each wall. The distance between two ribs is up to three times the distance between opposite facing walls of the vanes. The thickness of the ribs is equal to or greater than the thickness of the walls of the vanes.