Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1975-06-16
1977-06-07
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310269, H02K 324
Patent
active
040285693
ABSTRACT:
A ventilation system is provided for dynamoelectric machines such as hydro generators having salient pole rotors and in which the rotor and stator have separate ventilation systems sealed from the air gap. The stator ventilation system includes radial vent ducts in the stator core with longitudinal ducts extending between adjacent radial vent ducts in the tops of the winding slots. The longitudinal ducts are formed by two radially spaced wedges in each slot defining an axial passage between them, and the ducts are sealed from the air gap by the wedges and by sealing members at the inner ends of the radial ducts. Ventilating air flows radially inward through the vent ducts, longitudinally through the longitudinal ducts from one vent duct to the next, and radially outward to the external circuit where it is circulated through coolers by means of a blower or otherwise.
REFERENCES:
patent: 1702448 (1929-02-01), McCarty
patent: 2502669 (1950-04-01), Pollard
patent: 2917644 (1959-12-01), Laffoon
patent: 2994793 (1961-08-01), Sills
patent: 3116429 (1963-12-01), Harrington
patent: 3160770 (1964-12-01), Asantcheeff
patent: 3188833 (1965-06-01), Robinson
patent: 3588557 (1971-06-01), Kilgore
patent: 3597645 (1971-08-01), Duffert
Skudy R.
Telfer G. H.
Westinghouse Electric Corporation
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