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Motor cooling system

  • US 4,959,570 A
  • Filed: 03/07/1989
  • Issued: 09/25/1990
  • Est. Priority Date: 07/09/1987
  • Status: Expired due to Fees
First Claim
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1. A motor cooling system comprising:

  • a coating layer coating projecting portions of stator coils of a stator of the motor;

    a cooling liquid cooling said projecting portions of said stator coils and cooling opposite ends of a rotor of said motor;

    an oil jacket surrounding said stator of the motor, said oil jacket having inlet and outlet openings formed on opposite sides of the oil jacket; and

    flow passages extending from the inlet opening, extending past the coating layer coating the projecting portions of the stator coils, extending past outer surfaces of end rings of the rotor and extending to the outlet openings of the oil jacket, wherein the cooling liquid flows through the flow passages.

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