DEVICE FOR COOLING A REVERSIBLE MOTOR

摘要

The appts. comprises blade-type cooling fins attached to the protrusion(13b) of a rotary shaft(13), which protrusion extends into a cooling chamber(5) formed on the outside of a motor case(10). In the appts., the cooling air stream, moving in a spiral manner, passes through the blade-type cooling fins(17), is rectified in the axial direction via the fixed rectifying vane(29) and is expelled by the exhaust blower(25), when the motor runs in both the forward and the reverse directions.