FIELD: mechanical engineering; noise silencers.
SUBSTANCE: proposed noise silencer contains cylindrical housing, inner pipe with perforation in form of longitudinal slots with blind end face, spiral member arranged between housing and pipe, and end face outlet branch pipe. Spiral member is made movable and is furnished with adjustable support arranger on blind end face of inner pipe. Inner surface of housing and surface of spiral member are lined with noise absorbing material made of mineral wool on Rockwool-type basalt base.
EFFECT: increased efficiency of noise damping by acoustic regulation.
1 dwg
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