PLATE-TYPE NOISE SUPPRESSOR WITH UNIFIED PLATES Russian patent published in 2016 - IPC F01N1/00 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to noise suppression. Silencer comprises a housing of rectangular section, rigidly connected with end inlet and outlet pipes, sound-absorbing plates made of a frame comprising perforated sheets, filled with sound absorber, positioned inside housing with certain spacing and forming therein flat channels, between sound absorber and perforated sheets there is an acoustically transparent material. Sound absorber is made of mineral wool on basalt base of “Rockwool” type, or “URSA” mineral wool, basalt wool P-75, or glass wool with glass felt, or foamed polymer, for example, polyethylene or polypropylene, sound absorbing element over its entire surface is lined with acoustically transparent material, for example, glass fiber fabric EZ-100 or polymer of “Poviden” type.

EFFECT: higher efficiency of noise suppression.

1 cl, 3 dwg