Laitteisto virtausmelun alentamiseksi ja venttiili

摘要

This invention relates to a device (1) for reducing flow noise. In order to achieve low flow noise, the device comprises inlet apertures (3) for receiving a fluid flow, and outlet apertures (7) for forwarding the fluid flow. A combined flow cross-sectional area of outlet apertures (7) receiving fluid from a single inlet aperture (3) is larger than the flow cross-sectional area of said single inlet aperture. At least one first outlet aperture (8) is arranged such that at least a portion of the fluid flow to be received from the inlet aperture (3) may advance substantially directly via it, and at least one second outlet aperture (7) is arranged such that at least a portion of the fluid flow to be received from the inlet aperture (3) may advance via it, whereby at least one second outlet aperture (7) is arranged to produce substantially around the fluid flow formed by at least one first outlet aperture (8) a fluid flow which is slower than that.