| 摘要 |
In a dynamoelectric machine including a rotor of electrically conductive material having a plurality of axially extending slots for receiving electrical conductors, there is provided apparatus in each slot for electrically insulating the conductors from the rotor. The insulating apparatus comprises a substantially U-shaped insulating member of an aramid paper extending axially along the length of the slot. The base of the U-shaped insulating member is held in position by a sub-slot cover formed of an extruded plastic material which has an inner member covering an axially extending sub-slot located beneath each of the conductor slots of the rotor and an outer member which fits over the top of the base of the U-shaped insulation member and latches into the inner member. Both the outer and inner members of the sub-slot cover have molded apertures for allowing the passage of cooling air and the U-shaped insulation member has a corresponding aperture whereby the cooling air can be passed through the sub-slot and forced outward through the windings of the rotor. In one embodiment, the sub-slot covers are formed to be substantially less than the axial length of the rotor and a plurality of the covers may be utilized in an interlocked relationship to form a continuous cover extending the length of the axial direction of the rotor.
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