SHOP VACUUM CLEANER NOISE SUPPRESSOR Russian patent published in 2017 - IPC F01N1/04 

FIELD: machine engineering.

SUBSTANCE: suppressor includes a housing, consisting of a cylinder shell, rigidly connected to the end circular plates with inlet and outlet nozzles. The reactive chambers, formed by the circular discs with holes, are perpendicularly mounted to the direction of aerodynamic flow motion in the housing. Reactive chamber with an inlet connected to one of the end plates symmetrically round body attached resonance muffler insert and the outlet, and the other housing axially attached to the reactive part of the muffler inlet pipe. The reactive part of the muffler is installed perpendicular to the direction of motion of the aerodynamic flow and consists of at least three jet chambers formed by circular discs with apertures coaxial with the housing and the inlet and the resonance insert muffler is designed as a cylindrical sleeve attached coaxially body to end round plate and consists of a sound chamber and a resonance chamber formed by rigid walls. The resonance chamber is located at least two resonant inserts, attached to the liner, perpendicular to its axis, absorbing chamber is formed by a circular end plate with the outlet and a rigid wall part of a resonant cylindrical sleeve insert which is lined with sound absorbing material. Inside the sound absorption chamber, at least three exhaust sleeve attached to the sleeve, are located perpendicularly to its axis.

EFFECT: improved efficiency of noise suppression.

3 dwg