Rotor cooling arrangement
First Claim
1. A rotor for electrical equipment, said rotor having at least one pair of poles, each pole having a length and a width and a winding encircling said length and said width, and said rotor comprisingat least one element fabricated of heat conductive material, said element being separate from said poles and said winding, said element being disposed between at least one of said poles and its encircling winding, said element extending along said length between a first and a second location then and then turning at said second location to form an extension that extends a predetermined distance along said width.
2 Assignments
0 Petitions
Accused Products
Abstract
An arrangement for cooling a rotor of a motor, generator or alternator wherein at least one cold plate element is disposed between a rotor pole and its associated winding. One or more cold plate elements surround each pole and are in substantial contact therewith. In addition, each cold plate element is also in substantial contact with the pole winding. As a result, each cold plate element serves to conduct heat from both the pole and its associated winding. To enhance the cooling capabilities of this arrangement, each cold plate element may incorporate passageways for conducting a cooling medium through the element. Advantageously, the resulting rotor assembly is suitable for retrofit into existing applications having strict rotor size and weight requirements. In addition, this assembly is suitable for use in alternators, generators or motors, whether alternating current or direct current.
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Citations
28 Claims
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1. A rotor for electrical equipment, said rotor having at least one pair of poles, each pole having a length and a width and a winding encircling said length and said width, and said rotor comprising
at least one element fabricated of heat conductive material, said element being separate from said poles and said winding, said element being disposed between at least one of said poles and its encircling winding, said element extending along said length between a first and a second location then and then turning at said second location to form an extension that extends a predetermined distance along said width.
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16. Electrical equipment comprising
a housing; -
a stationary winding disposed within said housing and forming an aperture;
a rotor disposed within said aperture, said rotor including at least one pair of poles, each pole having a length and a width and a winding encircling said length and said width; and
at least one element fabricated of heat conductive material, said element being separate from said poles and said winding, said element being disposed between at least one of said poles and its encircling winding, said element extending along said length between a first and a second location and then turning at said second location to form an extension that extends a predetermined distance along said width. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method of cooling a rotor for electrical equipment, said rotor having at least one pair of poles and each pole having a length and a width and a winding encircling said length and said width, said method comprising the steps of
providing at least one element fabricated of heat conductive material; - and
disposing said element between each rotor pole and its encircling winding, said element extending along said length between a first and a second location and then turning at said second location to form an extension that extends a predetermined distance along said width. - View Dependent Claims (23, 24)
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25. A rotor for electrical equipment, said rotor having at least one pair of poles, each pole having at least two intersecting pole surfaces and a winding encircling these surfaces, and said rotor comprising
at least one element fabricated of heat conductive material, said element being disposed between at least one of said poles and its encircling winding, said element having a bend so that said element wraps around and extends along said two intersecting pole surfaces.
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26. A rotor for electrical equipment, said rotor having at least one pair of poles, each pole having at least two intersecting pole surfaces and a winding encircling these surfaces, and said rotor comprising
at least one element fabricated of heat conductive material, said element being disposed between at least one of said poles and its encircling winding, each element having a first nonplanar surface that is adjacent to said two intersecting pole surfaces.
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27. Electrical equipment comprising
a housing; -
a stationary winding disposed in said housing and forming an aperture;
a rotor disposed in said aperture, said rotor including at least one pair of poles, each pole having at least two intersecting pole surfaces and a winding encircling these surfaces, and at least one element fabricated of heat conductive material, said element being disposed between at least one of said poles and its encircling winding, each element having a first nonplanar surface that is adjacent to said two intersecting pole surfaces.
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28. A method of cooling a rotor for electrical equipment, said rotor having at least one pair of poles, each pole having at least two intersecting pole surfaces and a winding encircling these surfaces, said method comprising the steps of
providing at least one element fabricated of heat conductive material, each element having a nonplanar surface; - and
disposing said element between each rotor pole and its encircling winding, said nonplanar surface of said element being adjacent to said two intersecting pole surfaces.
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Specification