Laminated dynamoelectric machine rotor having cast conductors and radial coolant ducts and method of making same
First Claim
1. In a laminated rotor having cast conductors in spaced axially-extending passageways adjacent the peripheral surface of the stacked rotor laminations and having radial coolant ducts extending between spaced groups of the rotor laminations, the improvement comprising;
- (a) a plurality of laminated spacer assemblies, each comprising a plurality of metal plates, locking means for securing such plates to each other in stacked relationship, and wall means defining an aperture through each plate, the apertures in all of said plates of each spacer assembly being positioned in alignment to define a conductor passageway through the assembly, and(b) mounting means fastening each of said spacer assemblies, respectively, to at least one rotor lamination of a respective juxtaposed group of rotor laminations with each spacer assembly conductor aperture aligned with a respective axially-extending passageway through the rotor laminations, thereby to define continuous axially-extending conductor passageways through the aligned rotor laminations and spacer assemblies, said continuous conductor passageways each being sealed from the radial coolant ducts by said wall means of the respective spacer assemblies.
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Accused Products
Abstract
A rotor comprising stacked laminations having conductor slots and axial passageways provided with closed-slot spacer assemblies that are stacked in groups between selected axially spaced rotor laminations to hold said laminations apart while sealing the conductor slots thereby to form radial cooling ducts through the laminations of the selected axially spaced groups and around the closed-slot spacer assemblies. According to the method of the invention, the spacer assemblies are secured in selected operating position by being staked to certain of the main rotor laminations, and a characteristic staking procedure is used to secure individual plates of each of the assemblies together.
37 Citations
13 Claims
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1. In a laminated rotor having cast conductors in spaced axially-extending passageways adjacent the peripheral surface of the stacked rotor laminations and having radial coolant ducts extending between spaced groups of the rotor laminations, the improvement comprising;
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(a) a plurality of laminated spacer assemblies, each comprising a plurality of metal plates, locking means for securing such plates to each other in stacked relationship, and wall means defining an aperture through each plate, the apertures in all of said plates of each spacer assembly being positioned in alignment to define a conductor passageway through the assembly, and (b) mounting means fastening each of said spacer assemblies, respectively, to at least one rotor lamination of a respective juxtaposed group of rotor laminations with each spacer assembly conductor aperture aligned with a respective axially-extending passageway through the rotor laminations, thereby to define continuous axially-extending conductor passageways through the aligned rotor laminations and spacer assemblies, said continuous conductor passageways each being sealed from the radial coolant ducts by said wall means of the respective spacer assemblies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification