Semi-enclosed AC motor

Details Semi-enclosed AC motor Semi-enclosed AC motor

2006-08-15

2008-12-02

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S058000, C310S043000, C310S090000, C310S256000

Reexamination Certificate

active

07459817

ABSTRACT:
A partially enclosed induction motor comprises a rotor assembly, a stator assembly, and a metal frame defining a housing having a generally cylindrical shape with bearing housings at each axial end. The interior of the frame is configured to closely embrace a laminated core and follows the contour of the coil end turns of the stator assembly. A canister seal between the stator assembly and the rotor assembly hermetically seals the rotor assembly from the stator assembly. A heat conductive molding material fills gaps in the stator winding and the space between the stator assembly and the frame. A fan driven by the rotor shaft and a shroud direct the air along the canister seal and through the rotor assembly.

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patent: 6765325 (2004-07-01), Prouvost
patent: 6891290 (2005-05-01), Nagayama et al.

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