Abstract: A vacuum cleaner includes a nozzle section, a cleaner body coupled to the nozzle section and being in fluid communication with the nozzle section, a dust collecting container operatively coupled with the cleaner body, a primary cyclone, a secondary cyclone, a discharge member arranged in the primary cyclone and a floatation prevention member. The primary cyclone and at least one secondary cyclone separate dust and dirt from a suction airflow flowing into the dust collecting container. The floatation prevention member is attached to an underside of the discharge member for preventing swirling airflow in the dust collecting container.

Abstract: A vacuum cleaner includes a cleaner body, a dust collector coupled to the cleaner body, a dust collecting container and a filter assembly. The dust collector includes a cyclonic chamber including a primary cyclone in fluid communication with the cleaner body and having a primary airflow inlet located on an upper portion of the primary cyclone at one side of the primary cyclone and a primary airflow outlet located on an upper portion of the primary cyclone at the center of the primary cyclone, and at least one secondary cyclone disposed around the primary cyclone for separating contaminants entrained in the airflow discharged from the primary cyclone.

Abstract: A vacuum cleaner is disclosed. The vacuum cleaner comprises a cleaner body, a multi cyclonic a primary cyclone and at least one secondary cyclone, a suction source having a suction source inlet and a suction source outlet, a main filter assembly including a main filter element comprising a selectively permeable material, a discharge member having an opened upper end coupled to the peripheral edge of the primary airflow outlet and a closed lower end, and a guide rib provided at the primary cyclone for guiding the airflow in a direction tangential to the inner peripheral wall surface of the primary cyclone. Accordingly, it is possible to separate easily and conveniently dust and dirt from the airflow and deposit the dust and dirt into the dust collecting container.

Abstract: A vacuum cleaner is disclosed. The vacuum cleaner comprises a cleaner body, a cyclonic chamber comprising a primary cyclone and at least one secondary cyclone disposed around the primary cyclone, a flow passage guide for guiding the airflow discharged from the primary cyclone to a secondary airflow inlet of the secondary cyclone, a first conduit for fludically connecting a nozzle section defining a suction opening to a primary airflow inlet of the primary cyclone, a suction source having an suction source inlet and an suction source outlet, and a second conduit for fludically connecting a secondary airflow outlet to the suction source inlet of the suction source. Accordingly, it is possible to achieve a low flow resistance by virtue of the flow passage guide and an enhanced dust collecting performance by virtue of a sealing effect of the sealing member.

Abstract: An object of the present invention is to provide a dust collecting device in a vacuum cleaner replacement of which dust collecting filter is easy.

Abstract: Provided is a cyclonic dust collection unit for conveniently removing a foreign object filtered therein. The cyclonic dust collection unit includes: a first filtering chamber for filtering a first foreign object having a first size using a cyclone airflow; a second filtering chamber for filtering a second foreign object having a second size smaller than the first size of the first foreign object, the second foreign object being contained in the air passed through the first filtering chamber; a foreign object storing chamber for storing the first and/or second foreign object(s) separated through the first and second filtering chambers; a filter disposed in the first filtering chamber, for separating the first foreign object on an outer surface thereof; and a cutaway hole formed in a longitudinal direction thereof.

Abstract: A vacuum cleaner is disclosed, including suction means for providing suction force, a suction nozzle for drawing room air by the suction force provided from the suction means, a dust collecting box for receiving the room air drawn through the suction nozzle, an upper cover having an opening at a central portion thereof for selective opening/closing of an upper portion of the dust collecting box, and a filter assembly selectively fastened to an edge of the opening, for filtering dust from the drawn air, and discharging the air to upward, thereby making cleaning and replacement of the dust collector assembly easy.

Abstract: Disclosed is a vacuum cleaner for easily cleaning an inside of a dust collector and for easily cleaning and replacing a filter, the vacuum cleaner including a suction nozzle for drawing in air containing impurities such as dust; a main body coupled with the suction nozzle and having suction means for generating a suction force therein; a dust collector formed in a cylindrical form and detachably provided at the main body, into which the air drawn in by the suction nozzle is introduced; a suction tube provided on an outer surface of the dust collector for guiding the air drawn in by the suction nozzle to an inside of the dust collector; a separation plate for dividing an inside of the dust collector into an upper inner space and a lower inner space; a filter provided in the upper inner space of the dust collector divided by the separation plate, filtering the air drawn into the dust collector, and guiding the filtered air to the lower inner space of the dust collector; and a lower cover for discharging the air