Blower fan, in particular for blowing apparatuses, and blowing apparatus provided thereof
AssigneeCifarelli S.p.A.
InventorRoberto Cifarelli
Life of this patent
Estimating the term…
Abstract
A blower fan comprises a support element (13) presenting a first face (13a) and a second face (13b) mutually opposite to said first face (13a), the first and the second faces (13a, 13b) being respectively invested at least by a first and a second air flows (10, 11) coming from mutually opposite directions, a first blade series emerging at least from said second face (13b), and at least one air passage (13c) provided in the support element (13) and adapted to direct at least said first air flow (10) investing said first face (13a) at least partly through said support element (13).
Claims36
A blower fan, in particular for blowing apparatuses, comprising:
- a support element (13) presenting a first face (13a) and a second face (13b) mutually opposite to said first face (13a), said first and second faces (13a, 13b) being respectively invested at least by a first and a second air flows (10, 11) coming from mutually opposite directions;
- a first blade series emerging at least from said second face (13b);
- and
- at least one air passage (13c) provided in the support element (13) and adapted to direct at least said first air flow (10) investing said first face (13a) at least partly through said support element (13).
A blower fan, in particular for blowing apparatuses, comprising:
- a support element (13) presenting a first face (13a) and a second face (13b) mutually opposite to said first face (13a), said first and second faces (13a, 13b) being respectively invested at least by a first and a second air flows (10, 11) coming from mutually opposite directions;
- a first blade series emerging from said first face (13a);
- and
- a third blade series emerging from said first face (13a) and/or said second face (13b), said third blade series being geometrically different from the first blade series.
A multi-purpose blowing apparatus, in particular for use in the agricultural field and the like, comprising:
- an engine (2),
- a blower fan (1) moved by the engine (2) and adapted to generate a radial delivery air flow (4), and a volute header (5) surrounding said blower fan (1) and adapted to convey a radial delivery flow (4) at least partly towards provided use means,
- wherein said blower fan is a blower fan of the type as claimed in anyone of the preceding claims from 1 to 10 or in anyone of the preceding claims from 11 to 23.
Dependencies are inferred from the claim text.