ELECTRIC VACUUM CLEANER Russian patent published in 2015 - IPC A47L9/28 

FIELD: personal use articles.

SUBSTANCE: electric vacuum cleaner contains the main vacuum cleaner body accommodating an electric blower (18). The electric vacuum cleaner contains an air channel communicating with the electric blower (18) suction side. The electric vacuum cleaner contains a floor brush (23) moving across the surface to be cleaned and separating part of the air channel. The electric vacuum cleaner contains an optic sensor (53) determining the quantity of dust passing through the inner part of the air channel by way of actuation of the electric blower (18). The electric vacuum cleaner contains a part (59) for calculation of cleaning efficiency that calculates cleaning efficiency relying on the total quantity of dust determined by the optical sensor (53), the number of the floor brush (23) movement strokes across the surface to be cleaned (23) and the time of the floor brush (23) movement across the surface to be cleaned.

EFFECT: electric vacuum cleaner contains an indication unit (20) ensuring display of cleaning efficiency calculated by the cleaning efficiency calculation part (59).

6 cl, 16 dwg