Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1979-05-25
1981-05-19
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 62, 310 63, 310 65, H02K 900
Patent
active
042687675
ABSTRACT:
An electrical machine with an axial-flow fan and a two-part ventilator encasing is disclosed. One part of the ventilator encasing is non-moveable with respect to the fan blade of the axial-flow fan. The second encasing part is moveable with respect to the fan blade, and can be moved from a first position in which the moveable encasing part is adjacent to the fan blade to a second position axially displaced from the first position. The axial movement of the moveable encasing part facilitates maintenance and disassembly work on the machine which require a significant clearance between the fan blade and the encasing. The moveable encasing part is moveably mounted on a bearing bracket associated with the shaft of the rotor of the machine. The shaft of the rotor is used to coaxially position the moveable encasing part with respect to the axial-flow fan and the axial-flow fan blade. Means are provided to lock the moveable encasing part in the first axial position, and to maintain the quality of a seal between the moveable and non-moveable encasing parts during machine operation.
REFERENCES:
patent: 2809307 (1957-10-01), Muczenski
patent: 3089970 (1963-05-01), Rhodes
patent: 3518467 (1970-06-01), Wightman
patent: 3527970 (1970-09-01), Wightman
patent: 3610976 (1971-10-01), Wightman
patent: 3761748 (1973-09-01), Baumann
patent: 3870907 (1975-03-01), Hoffman
Domitrovic Josip
Ulrich Urban
BBC Brown Boveri & Co. Ltd.
Skudy R.
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