Patent ID: 8256132
Filing Date: 2012-09-04
Classification: A45D,A61P

Abstract:
1. A silencer for an appliance comprising: at least one casing comprising an inlet end, an outlet end, and at least one motor for rotatably driving at least one turbine for sucking in air via at least one admission orifice at the level of the inlet end upstream of the turbine, said at least one admission orifice having a first diameter, and expelling said air downstream of the turbine via at least one outlet orifice at the level of the outlet end, wherein said silencer comprises at least one chamber having a length and mounted substantially tightly upstream of the admission orifice and having an inlet orifice having a second diameter for aspiration of air upstream of the chamber, wherein said chamber has a third diameter greater than the first diameter of the admission orifice and the second diameter of the inlet orifice, and wherein said length and said third diameter of the chamber are of such a size so as to define a volume tuned as a function of the sound frequencies to be attenuated by the silencer.