Patent ID: 8729752

Claim:
An oil-cooled electrical generator comprising: a rotor having coils positioned around a hollow shaft, an interior of the hollow shaft configured to receive shared oil from a gearbox; one or more wedges interspersed between and in contact with the coils; one or more spray pipes supported on radial pipe supports within the one or more wedges, the one or more spray pipes having holes formed therein; a manifold ferrule circumscribing the shaft and being in fluid communication with the interior of the shaft; and one or more manifold pipes in fluid communication with the manifold ferrule and the one or more spray pipes such that, upon rotation of the rotor, oil from the interior of the shaft emerges from the holes as spray, internally constrained within the one or more wedges, to internally cool the one or more wedges and provide for cooling of one or more adjacent coils.