Ventilation air flow block in an electric motor

Details Ventilation air flow block in an electric motor Ventilation air flow block in an electric motor

1988-10-07

1990-04-03

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

361 25, 361 27, 361103, H02K 1100, H02H 7085

Patent

active

049143298

ABSTRACT:
An electric motor includes a fan attached to the end of a rotor shaft extending through an opening in an end shield of the motor housing. The fan forces air about the housing to cool the motor components. A motor protector including a temperature sensor is connected to the stator windings and is sensitive to winding temperatures to shut off the motor when the temperatures exceed a predetermined level. A performed strip of material is positioned over the protector in a tent-like form to block flow of cooling air around the protector. Thus, the protector is kept sensitive to the winding temperature, the material block preventing the protector being influenced by the flow of cooling air within the motor.

REFERENCES:
patent: 4465948 (1984-08-01), Oyama et al.
patent: 4499517 (1985-02-01), Lisauskas
patent: 4602872 (1986-07-01), Emery et al.
patent: 4734602 (1988-03-01), Hauser et al.

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