Silencer for vacuum cleaner

Abstract

The present invention provides a silencer for a vacuum cleaner. The silencer for the vacuum cleaner comprises at least one silencing board mounted in an exhaust channel of the vacuum cleaner for passage of an exhaust airflow from the vacuum cleaner. A plurality of pores are distributed throughout in the silencing board. The silencing board is mounted in an orientation perpendicular to the direction of the airflow through the exhaust channel. The silencer for a vacuum cleaner can considerably diminish the noise generated by the vacuum cleaner in operation.

1 . A silencer for a vacuum cleaner, which comprises at least one silencing board mounted in an exhaust channel of the vacuum cleaner for passage of an exhaust airflow from the vacuum cleaner, with a plurality of pores ( 2 ) distributed throughout in the silencing board.  
   
   
       2 . A silencer for a vacuum cleaner according to  claim 1  wherein the silencing board is mounted in an orientation perpendicular to the direction of the airflow passing through the exhaust channel.  
   
   
       3 . A silencer for a vacuum cleaner according to  claim 1  wherein the total passage area of the pores is less than half of the cross-sectional area of the exhaust channel.  
   
   
       4 . A silencer for a vacuum cleaner according to  claim 1  wherein the diameter of each of the pores in the silencing board is less than 6 mm.  
   
   
       5 . (Cancelled).