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AC motor system

  • US 5,306,972 A
  • Filed: 07/17/1992
  • Issued: 04/26/1994
  • Est. Priority Date: 07/17/1992
  • Status: Expired due to Term
First Claim
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1. An alternating current (AC) motor system comprising:

  • an AC induction motor having a rotor and a stator, the rotor including a rotor winding comprising rotor bars passing through a core and having bar extensions extending beyond each end of the core, ends of the rotor bar extensions being connected together by end rings, the rotor bar extensions and end rings comprising end turns of the rotor winding, the rotor still further including a plurality of radial air passages formed between the rotor bar extensions, the end rings and the ends of the core for passing cooling air from one end to another end of the rotor, the stator having end windings extending from each end thereof; and

    air deflector means coupled to said another end of said rotor generally overlaying said air passages exiting from said another end, said deflector means having a generally curved configuration on a surface facing at least some of said air passages for directing cooling air exiting said passages into a generally radial flow direction and onto and through said end turns of said rotor and then onto said stator end windings adjacent said another end of said rotor.

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