Patent ID: 8884479

Claim:
An oil cooled generator comprising: a housing with a spiral oil groove formed therein, the housing defining a housing interior; a stator core being in contact with the housing so that an outer surface of the stator core and the spiral oil groove produce an enclosed spiral passageway for oil; stator windings with first portions in thermally-conductive contact with the stator core and second non-contact portions not in such contact; a spray passage with a spiral passageway end and a housing interior end, the spiral passageway end fluidly connected with the spiral passageway, and the housing interior end fluidly connected with the housing interior; and a nozzle removably disposed in the housing interior end of the spray passage, and having a cylindrical orifice with a longitudinal axis oriented so that a line projected in alignment with the axis does not intersect the non-contact portions of the stator windings, the nozzle having a fluid inlet end, and a fluid outlet end, the fluid inlet end fluidly interconnected with the spiral passageway through the spray passage to form an oil flow path from the spiral passageway into the cylindrical orifice, the nozzle configured to provide a spray pattern of oil from the fluid outlet end which impinges on the non-contact portions.