Electric motor with an air-cooling system

Details Electric motor with an air-cooling system Electric motor with an air-cooling system

1995-10-13

1998-05-05

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 62, 310 64, H02K 900, H02K 132

Patent

active

057479003

ABSTRACT:
An electric motor includes a covering member for covering the outer periphery of a stator core, to improve the cooling efficiency of an air-cooling system of the motor. The covering member is fixed to a stator while defining a cavity therebetween in fluidic communication with air passages formed directly in the stator core. When an blower unit mounted on the motor operates, an ambient air surrounding the motor is introduced into the cavity, and then flows from the cavity into the air passages, so as to actively absorb heat generated in the stator from the outer peripheral surface of the stator core and the tubular wall surfaces of the air passages. Thereafter, the air is discharged from the air passages out of the motor.

REFERENCES:
patent: 4406959 (1983-09-01), Harano et al.
patent: 4680493 (1987-07-01), Ziegler et al.
patent: 4866320 (1989-09-01), Schulz
patent: 4908538 (1990-03-01), Geberth, Jr.
patent: 5019737 (1991-05-01), Bruno
patent: 5397950 (1995-03-01), Norbury, Jr. et al.
patent: 5559380 (1996-09-01), Nakamura et al.

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