Rotary electric machine

#1. Field of the Invention

#The present invention relates to a rotary electric machine, and more particularly to a rotary electric machine which is preferable for a structure employing a noise countermeasure.

#2. Description of Related Art

#FIG. 1 is a perspective view showing a turbine power generator corresponding to a first embodiment of a rotary electric motor in accordance with the present invention;

#FIG. 2 is a cross sectional view as seen from an arrow A-A in FIG. 1, and shows a connecting structure between a noise insulation plate and a noise insulation plate attaching seat;

#FIG. 3 is a cross sectional view as seen from an arrow B-B in FIG. 2, and shows details of the connecting structure in FIG. 2;

#A description will be given of an embodiment in accordance with the present invention with reference to the accompanying drawings. FIG. 1 shows a whole structure of a turbine power generator corresponding to a first embodiment of a rotary electric motor in accordance with the present invention, FIG. 2 is a cross sectional view as seen from an arrow A-A in FIG. 1, and FIG. 3 is a cross sectional view as seen from an arrow B-B in FIG. 2.

#In the drawings, reference numeral 1 denotes a stator frame. Within the stator frame 1, there are incorporated a stator structured such that a stator coil is installed in a stator iron core, and a rotor 2 arranged so as to oppose to the stator and structured such that a rotor coil is installed in a rotor iron core.

#On the other hand, an acoustic absorbent 8 made of a glass wool surrounded by an acoustic absorbent scattering preventing cover 9 is arranged in an outer surface of the stator frame 1, and a plurality of divided noise insulation plates 4 are arranged in an outer surface of the acoustic absorbent 8. Further, a T-shaped noise insulation plate attaching seat 3 is firmly attached to a part of the outer surface of the stator frame 1 in accordance with a welding, and an end portion of the divisionally arranged noise insulation plate 4 is fixed to the T-shaped noise insulation plate attaching seat 3 by a fastening means constituted by a bolt 7 and a nut 5. Further, a gasket 11 corresponding to an elastic body is arranged between the noise insulation plate attaching seat 3 and the noise insulation plate 4, and a vibration-proofing rubber washer 10 serving as the vibration-proofing means having a function of preventing a vibration from being propagated is arranged between the noise insulation plate 4 and the nut 5.