External rotor motor having a cooling system

Details External rotor motor having a cooling system External rotor motor having a cooling system

1983-07-07

1986-03-04

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 61, 310 62, 310 64, 310 67R, H02K 900

Patent

active

045742103

ABSTRACT:
An external rotor motor used in drying fans and blowers provides an air current within a hollow fixed post which passes through the stator of the motor so that heat is transferred to the air current from the stator interior and transported by the air current to the end of the hollow post. At the end of the hollow post there is an air foil mounted normal to the post and designed for producing a radial air flow in a space between the air foil and the end plate of the rotor. An air flow produced by the impellers mounted to the rotor draw the air from the space and produces the current of air in the hollow post which thereby removes heat from the stator. Heat pipes may also be mounted within the hollow shaft to remove heat from the stator.

REFERENCES:
patent: 4132912 (1979-01-01), Wright

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