Dynamoelectric machine rotor cooling

• US 3,189,769 A
• Filed: 08/01/1961
• Issued: 06/15/1965
• Est. Priority Date: 08/01/1961
• Status: Expired due to Term

• Current Assignee: David M. Willyoung
• Original Assignee: David M. Willyoung
• Inventors: Willyoung, David M.
• Application Number:
  US04/128,438
• Time in Patent Office: 1,414 Days
• US Class Current: 310/52
• CPC Class Codes: H02K 3/24 with channels or ducts for cooling medium between the conductors
• CPC Class Codes: H02K 9/225 Heat pipes

Claims

1. IN A DYNAMOELECTRIC MACHINE, THE COMBINATION OF A ROTOR DEFINING A ROTATING SUBSTANTIALLY GAS-TIGHT CHAMBER, AN OPERATIVELY CONNECTED ELECTRICAL WINDING DISPOSED IN SAID CHAMBER AND HAVING PORTIONS LOCATED IN THE RADIALLY OUTERMOST PARTS THEREOF, SAID CHAMBER ALSO CONTAINING A DIELECTRIC VAPORIZABLE FLUID PARTIALLY IN A LIQUID STATE, ROTATING HEAT EXCHANGER MEANS DISPOSED IN SAID CHAMBER AND HAVING PORTIONS LOCATED IN A RADIALLY INNER PART THEREOF, AND MEANS CIRCULATING A SECONDARY COOLANT FLUID THROUGH SAID HEAT EXCHANGER MEANS AT A TEMPERATURE LOWER THANT HE PREVAILING SATURATION TEMPERATURE OF SAID DIELECTRIC FLUID, WHEREBY THE DIELECTRIC FLUID ACTS AS A THERMAL COUPLING BETWEEN THE WINDING AND THE HEAT EXCHANGER TO TRANSFER HEAT EVOLVED DUE TO OHMIC LOSSES IN THE WINDING BY BOILING ON THE WINDING AND CONDENSING ON THE HEAT EXCHANGER MEANS.