Impeller for a Ventilation Unit and Ventilation Unit Comprising said Impeller
AssigneeEntsorgafin S.p.A.
InventorsAlessandro Avonto, Gian Francesco Galanzino, Pietro Paolo Cella Mazzariol
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Abstract
The present invention refers to an impeller (1) for a ventilation unit (10), especially for use in plants for the aerobic treatment of organic waste. According to the invention, said impeller (1) comprises means (9a) adapted to create an under-pressure zone in the central region of the impeller itself, at its hub (5). Thanks to this measure, condensate water deriving from the humidity of the air sucked/blown by the ventilation unit (10) is prevented from leaking along the rotation shaft (24) of the impeller (1), towards its motor and towards the outside environment.
Claims10
Impeller for ventilation unit, comprises a housing, a pair of solid disk-like plates, received within said housing arranged mutually facing and parallel at a certain distance from each other and provided centrally with a through-hole for a cylindrical hub, a plurality of first radial blades arranged between said plates and extending from said hub, wherein the impeller comprises means for creating, in use, at the central hub of said plates, a zone having a pressure lower than that in the peripheral zone of said plates.
Ventilation unit comprising:
- an impeller comprising a housing and a pair of solid disk-like plates received within said housing and arranged mutually facing and parallel at a certain distance from each other and provided centrally with a through-hole for a cylindrical hub, a plurality of first radial blades arranged between said plates and extending from said hub;
- a rotation shaft (24) connected to said hub (5);
- and
- a motor for driving in rotation said rotation shaft,
- wherein, when said motor drives in rotation said rotation shaft, the pressure inside said housing in the central region of said impeller is lower than the pressure inside of said housing in the peripheral region of said impeller.
Dependencies are inferred from the claim text.