DUST SUCTION UNIT (OPTIONS) Russian patent published in 2008 - IPC A47L9/16 

FIELD: household goods and personal effects, household appliances.

SUBSTANCE: dust suction unit is used in vacuum cleaner and improves effectiveness of dust collection due to increase of cubic collecting capacity under limited dimensions. Dust suction unit is connected to mounting compartment of vacuum cleaner body and can be also disconnected. The unit is designed to separate and collect air pollutions drawn from cleaned surface by pull-in motor effort. The unit comprises of dust suction bag. Air inlet and air guide duct are situated in the lower part of dust suction bag. One end of air duct is through connected to air inlet whereas the other end is through connected to motor drive compartment ensuring direct drawn-in air discharge to motor. Filter screen is installed in the bottom part of dust suction bag and in air duct to screen pollutions from drawn-in air. Cyclones are positioned in parallel in dust suction bag in order to filter pollutions from drawn-in air applying pull-in effort when filter screen is clogged. Dust suction element is available at one side of cyclones. It is designed to collect dust separated from drawn-in air. According to the other unit design option, air inlet is located in the bottom part of dust suction bag while bag is in semicircular shape matching the shape of mounting compartment. Dust suction part is available on side of primary and secondary cyclones in dust suction bag. It is designed to collect dust separated from air by primary and secondary cyclones. Upper part of dust suction bag is connected to removable lid provided with outlet guide pipe.

EFFECT: improvement of effectiveness and increase of cubic dust collecting capacity.

9 cl, 7 dwg