Electric rotary machine

Details Electric rotary machine Electric rotary machine

1995-05-23

1997-12-09

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 91, 310 64, H02K 500, H02K 132

Patent

active

056964153

ABSTRACT:
A front frame and a rear frame of an alternator house a rotor and a stator therein and are secured by through bolts and nuts to each other in an axial direction at supports which are formed on the circumferential portion of the frames. Cooling air intake windows are formed on the end surfaces of the frames and cooling air discharging windows are formed on the circumferential surfaces of the frames. Window ribs formed between the discharging windows are arranged so that the ribs adjacent to the supporting portions have a width which is greater than the width of other ribs, thereby providing sufficient rigidity to suppress resonant vibrations and the generation of magnetic noise which occurs when the armature reaction of the alternator is transmitted from the stator to the entirety of the frames.

REFERENCES:
patent: 5028826 (1991-07-01), Kitamura
patent: 5194770 (1993-03-01), Yoshioka et al.
patent: 5233255 (1993-08-01), Kusumoto et al.
patent: 5235229 (1993-08-01), Tanaka et al.
patent: 5237230 (1993-08-01), Sugiyama et al.
patent: 5241230 (1993-08-01), Tanaka et al.
patent: 5250864 (1993-10-01), Kusumoto et al.
patent: 5315195 (1994-05-01), Bradfield et al.
patent: 5317224 (1994-05-01), Ragaly
patent: 5532534 (1996-07-01), Baker et al.

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