AERODYNAMIC RELEASE DAMPER Russian patent published in 2017 - IPC F01N1/24 

FIELD: acoustics.

SUBSTANCE: invention relates to means of silencing aerodynamic noise of pneumatic equipment and compressed gas or air release systems. Noise silencer comprises an inlet branch pipe and a rigidly coupled thereto housing made of a porous material, the housing comprises a branch pipe made in the form of one of side covers of the housing. Noise absorbing element is made from cermet with a degree of porosity within the range of optimal values 30…45 %, or as a layered and cross winding from porous threads wound on an acoustically transparent frame, for example, a wire frame, or from a hard porous noise-attenuating material, for example, metal-foam plastic or stone-shell.

EFFECT: higher efficiency of noise silencing.

1 cl, 2 dwg