VACUUM CLEANER NOISE-ATTENUATING DEVICE Russian patent published in 2009 - IPC A47L9/00 

FIELD: household objects and personal effects.

SUBSTANCE: noise-attenuating device body is installed and fixed along perimeter of motor body opening with provision of limitation of air amount exhausted between motor body and stator core. The first part for air exhaust is arranged in the body center to provide exhaust of specified air main part between stator core and rotor. At least one second part for air exhaust projects along body perimeter to provide exhaust of specified air part between motor body and stator core. Vacuum cleaner motor comprises body comprising flange, stator core installed in motor body, rotor installed in stator core to create the first space between stator core and rotor, stator core is installed in motor body with provision of the second space between them, cover of motor body and noise-attenuating device. Noise-attenuating device is installed between flange and motor body cover. The first and second parts for air exhaust are arranged so that amount of air exhausted through the second space is less than air amount exhausted through the first space.

EFFECT: flow noise absorption and weakening in motor body.

13 cl, 9 dwg, 1 tbl