MULTIPLE-CYCLONE DUST COLLECTOR FOR VACUUM CLEANER AND VACUUM CLEANER USING THE SAME Russian patent published in 2008 - IPC A47L9/16 

FIELD: dust-collector used in vacuum cleaner.

SUBSTANCE: multiple-cyclone dust collector has first cyclone unit for creating of first upward oriented vortex flow from dust-laden air flow drawn into lower part of cyclone unit and for separating contaminants from contaminated air owing to centrifugal force, and second cyclone unit disposed under first cyclone unit. Second cyclone unit is designed for creating of second upward oriented vortex flow from partly cleaned air discharged from first cyclone unit and delivered into lower part of second cyclone unit for separating of small contaminants from partly cleaned air owing to centrifugal force. First cyclone unit has first cyclone casing formed as hollow cylinder and designed for vortexing of contaminated air therein, and air feeding member formed as hollow cylinder extending from center of first cyclone casing partition wall and adapted to deliver partly cleaned air into second cyclone unit. First cyclone casing surrounds first dust collector adapted for collecting contaminants discharged from casing of first cyclone. Air inlet tube is positioned within part of first cyclone casing and adapted for creating of said first upward oriented vortex dust-laden air flow. Second cyclone unit has second cyclone communicating in through-flow manner with lower end of air feeding member and designed for creating from partly cleaned air flow delivered through air feeding member of second upward directed vortex flow, and second dust collector surrounding second cyclone and designed for collecting of small contaminants delivered from second cyclone. Second vortex air flow may have a number of upward oriented vortex flows designed for separation of contaminants from partly cleaned air. Dust-collector is placed within vacuum cleaner having low-pressure source which creates suction force, and suction brush for drawing of dust-laden air by suction force.

EFFECT: increased dust catching effect owing to eliminating collision of air flows and compact construction of dust collector and vacuum cleaner.

14 cl, 6 dwg