Cooling system for rotating machine
First Claim
Patent Images
1. An electrical machine comprising:
- a rotor having a rotatable shaft with an outer surface and a plurality of radial protrusions extending radially from the outer surface of the shaft, each of the protrusions having at least one cavity extending therethrough;
a stationary shaft disposed concentrically within the rotatable shaft and including an interior hollow region, wherein an annular space is formed between the stationary and rotatable shafts; and
a plurality of magnetic segments disposed on the radial protrusions,wherein a fluid path extends from the hollow region, into the annular space, and through the cavities of the radial protrusions.
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Abstract
An electrical machine comprising a rotor is presented. The electrical machine includes the rotor disposed on a rotatable shaft and defining a plurality of radial protrusions extending from the shaft up to a periphery of the rotor. The radial protrusions having cavities define a fluid path. A stationary shaft is disposed concentrically within the rotatable shaft wherein an annular space is formed between the stationary and rotatable shaft. A plurality of magnetic segments is disposed on the radial protrusions and the fluid path from within the stationary shaft into the annular space and extending through the cavities within the radial protrusions.
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Citations
19 Claims
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1. An electrical machine comprising:
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a rotor having a rotatable shaft with an outer surface and a plurality of radial protrusions extending radially from the outer surface of the shaft, each of the protrusions having at least one cavity extending therethrough; a stationary shaft disposed concentrically within the rotatable shaft and including an interior hollow region, wherein an annular space is formed between the stationary and rotatable shafts; and a plurality of magnetic segments disposed on the radial protrusions, wherein a fluid path extends from the hollow region, into the annular space, and through the cavities of the radial protrusions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrical machine comprising:
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a stator comprising stator coils interposed between stator laminations; a rotor having a rotatable shaft with an outer surface and a plurality of radial protrusions extending radially from the outer surface of the shaft, each of the protrusions having at least one cavity extending therethrough; a stationary shaft having a hollow region and disposed concentrically within the rotatable shaft, wherein an annular space is formed between the stationary and rotatable shafts, wherein a fluid path extends from the hollow region, into the annular space, and through the cavities of the radial protrusions; a plurality of magnetic segments disposed on the radial protrusions; and a seal disposed between the stationary shaft and the rotatable shaft enclosing the annular space and comprising a pathway to an exit. - View Dependent Claims (11, 12, 13, 14)
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15. A rotor cooling system comprising:
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an annular space defined between a rotatable shaft and a hollow stationary shaft, the rotatable shaft having an outer surface and a plurality of radial protrusions extending radially outward from the outer surface; a fluid path from within the hollow stationary shaft and into the annular space; a plurality of cavities, each extending radially from the annular space towards a periphery of a respective one of the radial protrusions; and holes in the radial protrusions, each being in fluid connection with a respective one of the plurality of cavities. - View Dependent Claims (16, 17, 18, 19)
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Specification