H - Electricity – 02 – K
Patent
H - Electricity
02
K
230/18
H02K 9/06 (2006.01) H02K 9/00 (2006.01)
Patent
CA 1125247
ABSTRACT OF THE DISCLOSURE 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. -10-
329148
Domitrovic Josip
Ulrich Urban
Bbc Brown Boveri & Company Limited
Swabey Ogilvy Renault
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