Air-cooled rotor for electric motor

Details Air-cooled rotor for electric motor Air-cooled rotor for electric motor

1987-09-17

1989-01-24

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 63, 310 89, 310270, H02K 512, F01D 500

Patent

active

048003158

ABSTRACT:
An electric motor has a ferrous core extending along, rotatable about, and centered on an axis. This core is formed with axial slots and has opposite end edges centered on the axis. A winding extends along the slots of the core and has opposite axial ends extending axially beyond the core. A fan on the core circulates air axially over the core and winding. Respective deflector cages on the winding ends each include an inner ring, an outer ring fitted over the respective end edge of the core, and a plurality of ribs extending axially and radially between the rings and projecting generally axially from the respective winding end. The ribs are spaced apart on the respective winding end such that the winding end is exposed between the ribs. Thus on rotation of the rotor, particles blown by the fan are deflected by the ribs before they engage the winding ends.

REFERENCES:
patent: 967240 (1910-08-01), Roberts
patent: 1803493 (1931-05-01), Volet
patent: 2381533 (1945-08-01), Forss
patent: 4105906 (1978-08-01), Ade et al.
patent: 4636669 (1987-01-01), Plunkett et al.

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