ELECTRIC VACUUM CLEANER Russian patent published in 2011 - IPC A47L9/00 

FIELD: personal use articles.

SUBSTANCE: invention relates to an electric vacuum cleaner, comprising multiple electric fans. The electric vacuum cleaner comprises the main body of the vacuum cleaner, multiple chambers of electric fans formed in the main body of the vacuum cleaner; multiple electric fans arranged in each of multiple chambers of electric fans; a common dust retaining chamber, which is designed in the main body of the vacuum cleaner and communicates with the suction side of each electric fan, arranged in each chamber of the electric fan; a control facility arranged with the possibility of independent actuation of electric fans; an opening-closing facility, which is installed either on the inlet side, or at the outlet side of each electric fan and at the side of the dust retaining chamber outlet, and which prevents the reverse flow of air into the dust retaining chamber by means of opening and closing at least either at the inlet side, or from the outlet side of the according electric fan.

EFFECT: improved technical capabilities of the vacuum cleaner due to provision of suction efficiency even in case, when one of multiple electric fans is actuated.

7 cl, 16 dwg