Device for reducing noise and absorbing vibrations generated...

Details Device for reducing noise and absorbing vibrations generated... Device for reducing noise and absorbing vibrations generated...

B - Operations, Transporting

63

H

B63H 21/30 (2006.01) B63G 13/02 (2006.01)

Patent

CA 2393865

The invention concerns a device for absorbing vibrations generated by an electric motor (2) integrated in a ship propulsion nacelle (1), said motor, cooled by circulation in the nacelle of a radial air stream, driving in rotation at least a propeller (3) via a transmission shaft (4). Said device comprises means (7) arranged in the nacelle both for positioning, maintaining the motor (2) inside the nacelle (1), filtering the vibrations emitted thereby as well as channelling the air stream cooling the motor. The means consist of uncoupling isolation mounts (7) arranged between the motor (2) and the inner wall of the nacelle (1). The invention is applicable to propulsion systems of ships.

L'invention concerne un dispositif d'absorption des vibrations générées par un moteur électrique (2) intégré dans une nacelle (1) de propulsion d'un navire, ledit moteur, refroidi par la circulation dans la nacelle d'un flux d'air radial, entraînant en rotation au moins une hélice (3) par l'intermédiaire d'un arbre de transmission (4). Ce dispositif comporte des moyens (7) disposés dans la nacelle pour à la fois positionner, maintenir le moteur (2) à l'intérieur de la nacelle (1), filtrer les vibrations émises par celui-ci et canaliser la circulation du flux d'air de réfrigération du moteur. Les moyens sont constitués par des plots de découplage (7) disposés entre le moteur (2) et la paroi interne de la nacelle (1). Application à la propulsion des navires.

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