Patent ID: 9429042
Filing Date: 2016-08-30
CPC Classification: F01D,F05D,F23R

Claim Text:
1. An acoustic damper comprising: a neck and a damping volume, wherein the neck comprises a mouth being in fluid connection with a chamber, wherein adjacent to the mouth of the neck at least one opening for a sealing gas is located; the acoustic damper configured such that the at least one opening for the sealing gas is directed into the chamber to form a windshield in the chamber such that a grazing flow of gas passing through the chamber is deflected away from the mouth so that a bias flow of gas passing through the mouth is feedable into the chamber via the mouth independent of the grazing flow; and wherein the at least one opening for sealing gas is configured so that each of the at least one opening emits sealing gas into the chamber in a direction that is parallel to a direction at which the bias flow of gas is emitted from the mouth into the chamber and is perpendicular to the grazing flow; wherein each of the at least one opening is structured such that the sealing gas is emitted at a first velocity that is greater than a velocity of the bias flow and is also greater than a velocity of the grazing flow.