F - Mech Eng,Light,Heat,Weapons – 03 – D
Patent
F - Mech Eng,Light,Heat,Weapons
03
D
F03D 9/00 (2006.01) F03D 11/00 (2006.01)
Patent
CA 2579910
The present invention concerns a wind power installation comprising a pylon, a pod mounted rotatably on the pylon, a generator arranged within the pod and having a rotor and a stator, and at least one fan in the region of the pod. In order to reduce the entry of moisture, sand and other foreign substances into the pod and also to reduce the fan noise which reaches the exterior, in accordance with the invention there is provided an arrangement of the fan within the pod, wherein the fan sucks in outside air through a downwardly open first air gap, in particular between the pylon and the pod. In that respect the invention is based on the realisation that the air flow along the wind power installation and in particular in the region of the pod has a markedly pronounced horizontal component and at best a markedly less pronounced vertical component. In other words the wind and therewith the foreign substances transported thereby flow at the windward side along the pod to the lee side and have then passed the wind power installation. If therefore air is sucked in through a downwardly open air gap, then at most very fine particles can still also be sucked in, which more specifically can be borne upwardly by the air flow, against the effect of the force of gravity. As a result the suction intake of relatively large particles of sand and dust and also the suction intake of raindrops which, as anyone knows, are considerably heavier, is reduced to a high degree, if not entirely prevented.
L'invention concerne une éolienne comprenant une tour, une nacelle montée rotative sur cette tour, un générateur placé à l'intérieur de ladite nacelle, ce générateur comprenant un rotor et un stator, ainsi qu'au moins un ventilateur au niveau de la nacelle. Selon l'invention, pour réduire l'entrée d'humidité, de sable et d'autres corps étrangers dans la nacelle et réduire également les bruits du ventilateur émis vers l'extérieur, le ventilateur est disposé à l'intérieur de la nacelle de telle sorte qu'il aspire l'air extérieur par une fente d'aération ouverte vers le bas, en particulier entre la tour et la nacelle.
Oyen Wiggs Green & Mutala Llp
Wobben Aloys
LandOfFree
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