External-rotor motor supported by mounting flange

摘要

The motor includes an internal stator and an external rotor. A rotor shaft is connected to and rotates with the rotor. A mounting flange is located at one of the two axial ends of the motor. A bridge is fixedly connected with the mounting flange, and is in the form of a cylindrical housing connected at one axial end to the mounting flange, the end of the cylindrical housing remote from the end connected to the mounting flange extending radially inward with axial spacing from the rotor and having at such remote end at least one opening for the flow of external air therethrough. The external rotor is generally bell-shaped. Blower blades are provided on the external rotor in the region of the bottom of the bell-shaped external rotor. The motor at the axial end thereof provided with the mounting flange is provided with at least one opening for the axial flow of air through the interior of the cylindrical housing.