CYCLONE SEPARATOR Russian patent published in 2010 - IPC A47L9/16 B04C5/28 

FIELD: personal demand items.

SUBSTANCE: inventions are related to vacuum cleaner and cyclone separation device, which may be used in such vacuum cleaner. Cyclone separation device comprises the first stage of cyclone separation with at least one cyclone of the first stage, the second stage of cyclone separation, which is arranged further along with flow motion from the first stage of cyclone separation and comprises at least one cyclone of the second stage, and the third stage of cyclone separation, which is arranged further along with flow motion from the second stage of cyclone separation and comprises at least one cyclone of the third stage. Efficiency of separation in the second stage of cyclone separation is substantially same as efficiency of separation in the first stage of cyclone separation, or same as efficiency of separation in the third stage of cyclone separation. Cyclones of the second stage are substantially identical to each other, and cyclones of the third stage are substantially identical to each other.

EFFECT: improved operational reliability of device due to the fact that any variations in air stream, which occur in separation stages arranged further along with flow motion, cause insignificant effect or do not have any impact at ability of these stages of separation to preserve their efficiency of separation, which helps to improve stability of separation efficiency.

12 cl, 9 dwg