COOLING SYSTEM FOR ELECTRIC ROTOR MACHINE

摘要

A symmetrical cooling system for an electric rotor machine that includes a passageway that is positioned between portions of the stator, and which provides a pathway for a cooling medium. Stator ducts positioned within the stator, or portions thereof, are in fluid communication with the passageway. Cooling medium may flow through the suitor ducts from the passageway to ends of the stator so that the cooling medium only travels along a portion of the overall axial length of the stator. The symmetrical cooling system also includes an air gap dial is positioned between the stator and the rotor, and which receives cooling medium from the passageway at a midsection of the air gap. Cooling medium received at the midsection of the air gap may then flow towards either first or second ends of the stator.

主权项

1. A symmetrical cooling system for an electric rotor machine having a stator and a rotor, the symmetrical cooling system comprising:
a passageway positioned in a midsection of the stator and configured to provide a path way for the flow of cooling medium into at least a portion of the stator; a first set of stator ducts and a second set of stator ducts positioned in the stator, the first and second sets of stator ducts being in fluid communication with the passageway and adapted for the flow of cooling medium through at least a portion of the stator, the first set of stator ducts extending front the passageway in a first direction, a second set of stator ducts extending from the passageway in a second direction, the second direction being generally opposite to the first direction; and an air gap positioned between the stator and the rotor, the passageway configured to deliver cooling medium to a midsection of the air gap, the air gap configured to provide a channel for the flow of cooling medium from the midsection of the air gap to opposing first and second ends of the stator.