Electronically commutated motor, blower integral therewith, and

Details Electronically commutated motor, blower integral therewith, and Electronically commutated motor, blower integral therewith, and

1988-06-02

1989-11-28

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 59, 310 64, 310 67R, 310 68R, 310 91, 310156, 318254, H02K 900

Patent

active

048839825

ABSTRACT:
A motor assembly for use in combination with an air handling system such as an automotive blower system for supplying cooling or heating air to a passenger compartment of an automobile. The assembly comprises a support member which is adapted to be mounted on the air handling system. Stationary and annular rotatable assemblies are mounted on one side of the support plate and a printed circuit board including a motor control circuit is mounted on the other side thereof. The stationary assembly has a plurality of winding stages adapted to be electrically energized to generate an electromagnetic field. The annular rotatable assembly has a plurality of permanent magnet elements surrounding the stationary assembly and is adapted to engage a squirrel cage fan for moving air in the air handling system. The control circuit is connected to the winding stages for applying a voltage to one or more of the winding stages at a time and for commutating the winding stages in a preselected sequence to rotate the rotatable assembly. The support member has an opening in communication with apertures in the stationary and rotatable assemblies so that impellers on the rotatable assembly cool the control circuit by drawing air over it and through the opening and apertures.

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