Abstract: A sound damping device adapted to be arranged inside a duct, comprises a first element (40a) including at least one first wall (20a) of a first channel (12a) having a first channel inlet (13a) and a first channel outlet (13b), a second element (40b) including at least one second wall (20a) of a second channel (16a) having a second channel inlet (14b) and a second channel outlet (14b), said and outlet regions being substantially opposite to one another, wherein at least a portion of at least one of said first and second elements (40a, 40b) comprises an acoustic energy dissipative sheet material.

Abstract: A sound damping device adapted to be arranged inside a duct, comprises a first element (40) including at least one first wall (20a) of a first channel (12a) having a first channel inlet (13a) and a first channel outlet (13b), a second element (40b) including at least one second wall (20a) of a second channel (16a) having a second channel inlet (14b) and a second channel outlet (14b), said and outlet regions being substantially opposite to one another, wherein at least a portion of at least one of said first and second elements (40a, 40b) comprises an acoustic energy dissipative sheet material. In accordance with the invention, said first element (40a) comprises a guide means(21) further defining said first channel (12a); said second element (40b) comprises a second guide means (21) further defining said second channel (16a); and said first and second guide means (21) are arranged in relation to one another in such a way that the first channel (12a) forms a first angle in relation to the second channel (16a).

Abstract: The invention presents a sound dampening flow channel device defining at least one flow channel having an inlet opening and an outlet opening, the flow channel being at least partly delimited by at least one acoustic energy dissipative wall. The outlet opening of the flow channel cannot be seen from the inlet opening and vice versa. Preferably, the acoustic energy dissipative wall presents, in relation to the interior of the flow channel, a smooth curvature.

Abstract: The invention presents a sound dampening flow channel device defining at least one flow channel having an inlet opening and an outlet opening, the flow channel being at least partly delimited by at least one acoustic energy dissipative wall. The outlet opening of the flow channel cannot be seen from the inlet opening and vice versa. Preferably, the acoustic energy dissipative wall presents, in relation to the interior of the flow channel, a smooth curvature.