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US 8,967,949 B2Granted
Sound-proofed helicocentrifugal fan
AssigneeSoler & Palau Research, S.L.U.
InventorMarius Gamissans Bou
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Abstract
A sound-proofed helicocentrifugal fan includes a helicocentrifugal propeller associated with a motor, housed in a casing formed by a central piece and respective end pieces, which pieces are perforated with holes distributed over the entire surface except for the area around the propeller. A sound-absorbing blanket surrounds the casing, and an outer casing is disposed around the entire assembly.
Claims4
A sound-proofed helicocentrifugal fan comprising:
- a helicocentrifugal propeller;
- a motor coupled to the helicocentrifugal propeller;
- a first casing surrounding the helicocentrifugal propeller and the motor, the first casing having a central piece with a circular cross section and first and second end pieces coupled to the central piece, a surface of the first end piece, a surface of the second end piece, and a surface of the central piece are perforated with a distribution of holes except in an area surrounding the helicocentrifugal propeller;
- first and second coupling pieces coupled respectively to the first and second end pieces and adapted to be coupled to respective air circulation pipes to which the fan is attached;
- a blanket having a sound-absorbing material surrounding the first casing, the blanket having a circular cross section that encircles the first casing;
- and
- a second casing surrounding the blanket, the second casing having a circular cross section that encircles the blanket.
4 more elements
Dependencies are inferred from the claim text.