Abstract: The present invention relates to damping devices of an electric motor of an airflow generating apparatus and the apparatus having these devices, the devices having a first part, a second part, and a damping element, the damping element being arranged such that it determines an attachment between the first part and the second part, and having at least one central wall having two longitudinal ends. At least one of the two longitudinal ends of the at least one central wall is defined to form an angle with respect to the first part such that an imaginary transverse surface containing the at least one of the two longitudinal ends can be defined parallel to an imaginary joining line (A) between a center of masses of the at least one central wall and a center of gravity of the electric motor.

Abstract: The present invention relates to damping means of an electric motor of an airflow generating apparatus and an airflow generating apparatus having the damping device, the damping device having a first body, which defines a compartment for housing the electric motor (A); a second body for being arranged fixed to the apparatus, which defines a housing for housing the first body; and a damping element which is elastically deformable and has a longitudinal extension. The first body and the second body are separated from one another, the damping element being arranged such that it determines an attachment between the first body and the second body.

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.

Abstract: The present invention relates to a ventilation unit formed by a body-unit provided with an air inlet opening at one end and with an air outlet opening at the other end, an air driving propeller being located therein, there being included between the air driving propeller and the air inlet opening, which is shifted outwards, a tubular silencer, which establishes an air passage conduit having a smaller diameter than the air inlet opening.

Abstract: The invention relates to a sound-proofed helicocentrifugal fan comprising a helicocentrifugal propeller (6) associated with a motor (5), housed in a casing formed by a central piece (1) and respective end pieces (2 and 3), which pieces are perforated with holes distributed over the entire surface except for the area around the propeller (6), a sound-absorbing blanket (8) being incorporated on said casing and an outer casing (7) being incorporated around the entire assembly.