Oil cooling for an electrical generator

Details Oil cooling for an electrical generator Oil cooling for an electrical generator

1979-06-01

1981-04-14

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68D, 310 90, 310254, H02K 900

Patent

active

042622247

ABSTRACT:
For more effective cooling of directly driven claw-pole, typically automotive alternators, a system of internal passageways is provided through which cooling oil is forced from the pressurized engine oil supply system. The oil flows directly over surfaces of the rectifiers or their heat sink, the exciter core, and the stator housing. A portion of the oil is branched off in a metered quantity at the inlet directly to a shaft bearing, which it cools and lubricates. Various passageways systems are described, including one which permits electrical feed-throughs and the diodes to be mounted dry. A particular configuration is described for a shaft bearing, in which between an armor bushing and a cast bearing support hub there are annular oil channels connected to longitudinal oil channels to evenly distribute the pressurized oil around the bearing.

REFERENCES:
patent: 2987637 (1961-06-01), Bertsche et al.
patent: 3089045 (1963-05-01), Derks
patent: 3184624 (1965-05-01), Solomon
patent: 3562564 (1971-02-01), Potter
patent: 3648085 (1972-03-01), Fujii
patent: 3733503 (1973-05-01), Potter

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