Totally enclosed electric motor

Details Totally enclosed electric motor Totally enclosed electric motor

1989-02-28

1990-03-13

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 62, 310 63, 310 88, 310 89, 310227, H02K 900

Patent

active

049085387

ABSTRACT:
There is provided a totally enclosed electric motor which is effectively cooled by means of an internal ventilation system and an external ventilation system. The internal ventilation system includes an internal fan driven by the rotor which forces internal ventilating air into and along an annular series of longitudinal internal ducts arranged adjacent to the internal cylindrical wall supporting the stator. The internal ventilating air leaving the internal ducts enters a brush compartment where the air is directed axially over the commutator and through the stator-rotor arrangement and back to the internal fan. The external ventilation system includes an external fan driven by the rotor which forces external ventilating air from the atmosphere into and along an annular series of longitudinal external ducts arranged radially outwardly from the series of internal ducts and into exhaust compartments at the far axial end of the motor.

REFERENCES:
patent: 3344291 (1967-09-01), Pratt
patent: 3673447 (1972-06-01), Zumbach
patent: 3739208 (1973-06-01), Shartrand
patent: 4311935 (1982-01-01), Hoyss
patent: 4546280 (1985-10-01), Pfluger
patent: 4705893 (1987-11-01), Franz
patent: 4742257 (1988-05-01), Carpenter

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