MULTICYCLONE DUST-COLLECTING UNIT FOR VACUUM CLEANER Russian patent published in 2008 - IPC A47L9/16 

FIELD: personal effects.

SUBSTANCE: invention refers to multicyclone dust-collecting unit for vacuum cleaner. Multicyclone dust-collecting unit consists of two cyclone units and waste collection chamber. Contaminated air in the first cyclone unit moves to its lower part and forms an upward twisting airstream. Waste collection chamber envelopes the first part of the first cyclone unit and serves to collect contaminating particles emitted from the first cyclone unit housing. The second cyclone unit inhausts partially decontaminated air in its upper part from the first cyclone unit for axifugal separation of the small contaminating particles. Note that the second cyclone unit envelopes the second part of the first cyclone and consists of several second cyclones. Additionally multicyclone dust-collecting unit contains an element for transferring partially decontaminated air from the first cyclone to each of the second cyclones, upper cover, which contains several pipes for emitting air from the second cyclones, and removable lower cover installed on lower end of main cyclone housing.

EFFECT: increased effectiveness of contaminating particles collection.

22 cl, 9 dwg