COOLING SYSTEM FOR ELECTRIC ROTOR MACHINE
First Claim
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.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
15 Citations
20 Claims
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1. A symmetrical cooling system for an electric rotor machine having a stator and a rotor, the symmetrical cooling system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A symmetrical cooling system for an electric rotor machine having a rotor, the symmetrical cooling system comprising:
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a stator having a first stator yoke portion, a second stator yoke portion, and a plurality of stator windings, the first stator yoke portion having an axial length this is approximately equal to an axial length of the second stator yoke portion; a passageway positioned between the first and second stator yoke portions and adapted to provide a pathway for the flow of cooling medium; and a plurality of stator ducts positioned within the first and second stator yoke portions and in fluid communication with the passageway, the plurality of stator ducts adapted for the flow of cooling medium along the axial lengths of the first and second stator yoke portions. - View Dependent Claims (10, 11, 12)
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- 13. The symmetrical cooling system of claim wherein at least a portion of the passageway is positioned about a passageway axis that is generally perpendicular to a central axis of the stator.
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15. A stator for an electric rotor machine comprising:
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a first stator yoke portion having a first set of stator ducts, the first set of stator ducts configured to deliver cooling medium within the first stator yoke portion from a first end of the first stator yoke portion to a second end of the first stator yoke portion; a second stator yoke portion having a second set of stator ducts, the second set of stator ducts configured to deliver cooling medium within the second stator yoke portion from a first end of the second stator yoke portion to a second end of the second stator yoke portion; a plurality of stator windings operably connected to the first and second stator yoke portions; and a passageway positioned at least between the first stator yoke portion and the second stator yoke portion, the passageway configured to deliver cooling medium to the first and second sets of stator ducts. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification