Patent ID: 7204870

Claim:
A diffuser device for volatile substances, comprising: a motor unit ( 2 ) comprising an air suction fan ( 6 ) comprising a body ( 60 ) and an electric motor (M 1 ) that drives a plurality of blades ( 62 ) in rotation, electrical power supply means ( 4 , 5 ) to power said fan motor (M 1 ) electrically and a support structure ( 20 , 21 ) able to support said fan ( 6 ) and said electrical supply means ( 4 , 5 ); and a refill unit ( 3 ) comprising a refill ( 9 ) containing volatile substances to be diffused, filtering means ( 90 ) for air filtering and a support structure ( 30 ) able to support said refill ( 9 ) and said filtering means ( 90 ), characterised in that said refill unit ( 3 ) can be assembled on said motor unit ( 2 ) so that the filtering means ( 90 ) are situated upstream of said fan ( 6 ) to filter all the air sucked in by the fan ( 6 ); and said fan body ( 60 ) has an air inlet aperture ( 62 ) which allows an incoming flow of air along the axis of rotation of the blades ( 61 ) of the fan ( 6 ) and an air outlet aperture ( 63 ) disposed so as to allow a laminar outgoing flow of air, substantially at right angles to the incoming flow of air, wherein said outgoing flow of air strikes the refill ( 9 ) to favour diffusion of the volatile substances.