Abstract: To provide a dust collector which, even when it is used in a poor power supply situation, can detect the dust loading of a filter accurately, can remove dust automatically and can reduce power consumption. In the dust collector, there is provided a control circuit which can detect the dust loading of a filter by comparing the threshold value of the dust loading pressure to be determined by the internal pressure of the filter, the operation of a suction device, the power supply frequency of the suction device and the supply voltage of the suction device with the filter internal pressure just before the suction device stops, and, when the filter is dust loaded, can operate a dust removing device.

Abstract: A mobile yard vacuum cart that incorporates a leaf blower and trash can into a vertical support assembly that allows an operator to collect leaves into the trash can for disposal simultaneously while moving the mobile yard vacuum cart across a lawn without lugging the leaf blower. The mobile yard vacuum cart has a vertical support assembly, a pickup assembly, a discharge assembly and a strap assembly. The coupling of the leaf blower with the pickup assembly allows the operator to simply push the mobile yard vacuum cart without having to simultaneously manipulate a blower intake tube across the lawn surface. If the leaf blower has a chopping impeller blade, the mobile yard vacuum cart advantageously directs the leaves into the impeller of the leaf blower for chopping. The mobile yard vacuum cart provides adaptors in a variety of configurations to couple the tubes supplied with the leaf blower.

Abstract: Disclosed related to a vacuum cleaner comprising a cleaner body in which a dust collector mount part is formed; a dust collector attached and removed at the dust collector mount part, and having a dust storage part in the inside; at least one of the compressing member reducing the volume of the dust stored in the dust storage part as arranged in the dust storage part movably; a power transfer unit transferring the driving force to the compressing members from outside as connected with the compressing members; and a control unit deciding the amount of the dust stored in the dust storage unit.

Abstract: The present exemplary embodiments relate to a dust separating apparatus for a vacuum cleaner. The dust separating apparatus for a vacuum cleaner according to present exemplary embodiments includes a cyclone in which a plurality of cyclone airflows is formed; a dust outlet for discharging dust separated by the plurality of cyclone airflows; and a dust container for storing dust discharged from the dust outlet, wherein the cyclone includes a body in which air flows along an inner surface thereof, and a pair of sides, each of the sides forming one of both side surfaces of the body and defining an outlet for discharging air.

Abstract: A vacuum cleaner is disclosed that includes a dust-separating apparatus, a shutter unit, and a dust receptacle. The dust-separating apparatus can be fixed to a cleaner body and includes a dust outlet. The shutter unit is formed on the dust-separating apparatus to selectively open and close the dust outlet. The dust receptacle is detachably attached to a lower portion of the dust-separating apparatus. The dust receptacle opens the shutter unit when attached to the dust-separating apparatus and closes the shutter unit when detached from the dust-separating apparatus.

Abstract: A dust separating apparatus of a vacuum cleaner is disclosed. The dust separating apparatus includes a body unit to separate dust from air and to store the dust separated from the air, a cover unit detachably coupled with the body unit and having an air discharging part with an inlet projected into the body unit, and a horizontal movement-permitting part formed in the body unit to prevent the body unit from colliding with the air discharging part when one of the body unit and the cover unit is moved in a horizontal direction with respect to the other.

Abstract: A vacuum cleaner is disclosed. The present invention relates to a vacuum cleaner that is able to form dust and foreign substances collected in a dust collection device provided therein in a single mass shape to discharge it efficiently, not scattered in a dust collecting device. The vacuum cleaner includes a body, a dust separation device mounted in the body, a dust collection device independently provided from the dust separation device, connected to the dust collection device, a compression device provided in the dust collection device, to collect dust and foreign substances collected in a predetermined portion of the dust collection device and to compress the collected dust and foreign substances, and a liquid supply device provided in the dust separation device to supply liquid material to the dust separation device.

Abstract: A vacuum cleaner is disclosed. The present invention relates to a vacuum cleaner that is able to form dust and foreign substances collected in a dust collection device provided therein in a single mass shape to discharge it efficiently, not scattered in a dust collecting device. The vacuum cleaner includes a body, a dust collection device collecting dust and foreign substances therein, a compression device provided in the dust collection device to collect the dust and foreign substances collected in a predetermined portion of the dust collection device and to compress the collected dust and foreign substances, and a liquid supply device arranged in the dust collection device, in communication with an inside of the dust collection device, to supply liquid material to the dust collection device.

Abstract: A cleaning implement having a dirt bin for collecting debris from a floor. The dirt bin has at least one of a cleaning sheet and/or air filter attached thereto, as presented to the user. This arrangement allows for more efficient disposal of debris from the dirt bin and soiled components. The dirt bin may be emptied and reused or may be discarded after a single use.

Abstract: An upright vacuum cleaner (A) includes a housing (B) having a suction airstream inlet and a suction airstream outlet. A dirt container (50, 500) is selectively mounted to the housing for receiving and retaining dirt and dust separated from the suction airstream. The suction airstream inlet and the suction airstream outlet are in fluid communication with, respectively, an inlet and an outlet of the dirt container. The dirt container includes a first cyclonic air-flow chamber (66, 508) and a second cyclonic airflow chamber (68, 510), each cyclonic airflow chamber including a longitudinal axis. The second cyclonic airflow chamber is spaced from the first chamber, wherein the first and second chambers are each approximately vertically oriented and are arranged in a parallel relationship. An air manifold (52, 540, 540?) is disposed at a top portion of the dirt container. The air manifold includes an inlet section (54, 536, 565) through which dirty air passes and an outlet section (138, 560, 560?).

Abstract: A robot cleaner is provided that includes a body having a receiving portion configured to receive a dust tank mounted thereto, a detector installed at the receiving portion that detects whether the dust tank has been separated from the body by an interaction with the dust tank, and a controller that controls a suction motor installed in the body according to a detection result of the detector. When the dust tank is separated from the receiving portion, the detector detects the separated state of the dust tank immediately and the controller stops the suction motor, thus, preventing dust from being introduced into the body.

Abstract: A cyclone separator assembly comprises a cyclone separator that removes large particles of dirt from a working airstream as it flows through the cyclone separator, and the separated large particles of dirt are deposited into a dirt cup. The cyclone separator assembly further includes a fine particle separation member comprising a plurality of apertures for separating fine particles of dirt from air in the cyclone separator or the dirt cup. The fine particle separation member can be formed in a wall of the cyclone separator, a sidewall of the dirt cup, or in the outlet of the cyclone separator assembly. The cyclone separator assembly can further include a guide plate for creating a direction change in the path of the working airstream to aid in the separation of fine particles of dirt from air passing through the outlet.

Abstract: A floor cleaning apparatus includes a housing and a dirt collection vessel carried on that housing. The dirt collection vessel includes a dirty air inlet, a clean air inlet, a dirt collection chamber and a clean air outlet. A filter is received in the dirt collection vessel. A suction generator is carried on the housing. The floor cleaning apparatus also includes a flow control valve assembly. The flow control valve assembly is selectively displaceable between a first position wherein dirt and debris are captured in the dirt collection vessel and a second position wherein clean air is drawn through at least a portion of the filter to clean the filter. An activator is provided for automatically displacing the flow control valve assembly between the first and second positions.

Abstract: Object of the present invention is to provide a dust collecting device (100) for a vacuum cleaner of which dust collecting performance is improved. For this, the dust collecting device (100) includes a primary cyclone unit (110) having two parallel primary cyclones (111,112) for separating dust form air introduced therein by a cyclone principle, and a secondary cyclone (120) unit at a downstream of the primary cyclones (111,112) for cleaning the air again by the cyclone principle.

Abstract: A portable appliance comprises a dirt inlet, first and second cyclonic stages wherein each cyclonic stage comprises a plurality of cyclones in parallel and the second cyclonic stage is downstream from the first cyclonic stage and a fluid flow motor.

Abstract: A dust separating apparatus of a vacuum cleaner, includes a housing, a first cyclone separator integrated within the housing, and second cyclone separators arranged around the first cyclone separator, wherein the second cyclone separators are removably mounted into the housing. The first and second cyclone separators respectively have a separate dust receiving cavity and separate dust collecting chambers.

Abstract: A cyclone dust-collecting apparatus is provided. The dust-collecting apparatus is detachably mounted in a main cleaner body of a vacuum cleaner and disposed on a suction flow path extending from a suction port body to a suction source. The dust-collecting apparatus includes a body having an opened lower portion; at least one cyclone unit disposed to one side in the body to separate dust from air flowing into the body and discharge air from which the dust has been separated; and a bottom cover to open or close the lower portion of the body. The body has an inflow pipe penetrating the body from a rear portion of the body and connected to the cyclone unit and the inflow pipe has an inclined top surface.

Abstract: A cyclone dust collector includes a cyclone body including a first cyclone chamber to centrifugally separate dust from drawn-in air for a first time, a plurality of second cyclone chambers to centrifugally separate dust from the drawn-in air for a second time, and a plurality of discharge ports to cause the drawn-in air to be discharged from the plurality of second cyclone chambers; an upper cover to cover an upper portion of the cyclone body, the upper cover having an inner wall facing the plurality of discharge ports; and a noise reduction part disposed between the plurality of discharge ports and the inner wall of the upper cover, to reduce noise generated inside the upper cover by the air discharged through the plurality of discharge ports. Therefore, it is possible to reduce noise generated inside the upper cover of the cyclone dust collector.

Abstract: A multi-cyclone dust-collecting apparatus for a vacuum cleaner mounted in a main cleaner body to separate dust from air flowing from a suction port body and collect the dust separated from the air, the apparatus including a dust-separating unit including a primary cyclone unit to separate large dust particles contained in the air flowing from the suction port body, and a secondary cyclone unit that is disposed inside the primary cyclone unit and that tapers downwards; and a dust-collecting unit detachably mounted in a lower portion of the dust-separating unit, the dust-collecting unit including a first dust-collecting chamber to collect the large dust particles discharged from the primary cyclone unit, and a second dust-collecting chamber disposed inside the first dust-collecting chamber to collect fine dust particles discharged from the secondary cyclone unit. The first dust-collecting chamber may be greater in volume than the second dust-collecting chamber.

Abstract: The invention relates to an apparatus for cleaning a ground surface of synthetic grass and a filler comprising a frame (4), moving and supporting means (5) arranged on the frame (4) for moving the apparatus over the ground surface, cleaning means for the filler arranged on the frame (4), wherein the cleaning means comprise at least one cleaning space for the filler and an air pump (14), wherein a suction side of the air pump (14) is connected to the cleaning space, wherein supply means (25-29, 30) are arranged on the frame for supplying the filler to the cleaning means. Moreover, a pressure side of the air pump is connected to the supply means.

Abstract: A cyclonic separating apparatus includes a cyclonic separator for separating dirt and dust from an airflow, an inlet to the cyclonic separator and a shroud comprising a wall having a multiplicity of through-holes forming an outlet from the cyclonic separator. The apparatus also includes a plurality of separate passageways provided immediately downstream of the through-holes. By providing this arrangement, the separate passageways can be located around other parts of the cyclonic separating apparatus inwardly of the shroud, allowing for better packaging of the components of the cyclonic separating apparatus. The shroud may be reduced in size because some of the space previously required for a single, large passageway can be used for other components of the cyclonic separating apparatus such a collector or a cyclone. The reduction in size of the shroud in turn allows for the cyclonic separating apparatus to be more compact.

Abstract: A dust collection device has a tank, a suction unit, a filtering unit, a dust removal unit, a first detection unit, and a control unit. The tank has an air inlet for accommodating dust. The suction unit aspirates the dust through the air inlet. The filtering unit captures the dust through the air inlet. The dust removal unit removes the dust from the filtering unit. The first detection unit detects an operational state of the suction unit. The control unit controls the suction unit and the dust removal unit. The control unit activates the dust removal unit, when the first detection unit detects that the suction unit operates for a first predetermined time period and then stops operating.

Abstract: A cyclonic cleaning stage for a, e.g., surface cleaning apparatus is provided. The cyclonic cleaning stage comprises a plurality of cyclones, which are integrally molded as a single body. Each cyclone has a cyclone body having an upper end, a lower end, a cyclone inlet, and a cyclone outlet. Each cyclone inlet has a top. A separately molded upper cover is mounted to the top of the single body at the upper ends. A separately molded lower cover is mounted on the single body at the lower ends of the cyclones.

Abstract: The invention relates to a method for cleaning the filter of a vacuum cleaner which has a dirt collecting container with a suction inlet, to which a suction tube is connected, the dirt collecting container being connected to at least one suction unit via at least one filter and at least one suction line, and at least one closing valve closing an external air inlet, via which the suction line is connected to an external air supply, in which method, for cleaning the filter, the closing valve is opened and the side of the filter that is oriented away from the dirt collecting container is impinged upon by external air.

Abstract: A dust collection unit for a vacuum cleaner includes a first dust collection part for filtering foreign objects in air, a second dust collection part for filtering foreign objects in the air that has passed through the first dust collection part, and a dust collection container having first and second dust collection chambers that correspond to the first and second dust collection parts, respectively. The first and second dust collection chambers store the foreign objects filtered by the respectively first and second dust collection parts in a state where parts of the respective first and second dust collection parts are received in the respective first and second dust collection chambers and the first and second dust collection chambers are provided in a line.

Abstract: A robot cleaning system and a dust removing method of the same that are capable of moving a first dust collector mounted in a robot cleaner to a docking station to remove dust collected in the first dust collector. The robot cleaning system includes a robot cleaner having an opening, though which a first dust collector to collect suctioned dust is carried in and out of the robot cleaner, a docking station, to which the robot cleaner is docked to remove the dust collected in the first dust collector, and a collector moving unit to move the first dust collector to the docking station.

Abstract: A hand-held vacuum cleaner with a container for the storage of dirt and debris therein. To provide improved efficiency and performance, the hand-held vacuum may employ a primary HEPA filter, a device for swirling a dirt and debris laden air flow and/or a mechanized filter cleaning device. Swirling may be employed to direct entrained dirt and debris in a desired direction relative to the container to slow the rate with which dirt and debris accumulates on the primary filter and/or to centrifugally remove dirt and debris from the air flow. Mechanized cleaning is employed to shake, scrape or otherwise remove accumulated dirt and debris from the primary filter.

Abstract: In one aspect, the present invention provides a filter cleaning mechanism comprising: a filter material (37) for filtering out dust and dirt particles from air passing therethrough; a frame (32, 34, 35, 38, 39) for supporting said filter material (37); devices (31, 296; 25a, 25b, 25c, 25d) for mechanically agitating said filter material to dislodge dust and dirt particles therefrom; wherein the devices for mechanically agitating said filter material comprises elements (31, 296; 25a, 25b, 25c, 25d) for deforming said frame within its elastic limit and elements (31, 296; 25a, 25b, 25c, 25d) for rapidly releasing said frame from said deformation to cause said frame to relax to an undeformed state.

Abstract: A dust-collecting unit for a vacuum cleaner is provided which detachably connected with a cleaner body of the vacuum cleaner. The dust-collecting unit includes a dust receptacle which is disposed under a dust separator disposed in the cleaner body, for collecting dust separated from air by the dust separator and dropping down from the dust separator, a dust receptacle ascending/descending part which is disposed under the dust receptacle and is pivoted in a direction or a reverse direction to ascend or descend the dust receptacle and to press-lock or unlock the dust receptacle to or from the dust separator, and a handle which extends from one side of the dust receptacle ascending/descending part along a lengthwise direction of the dust receptacle and has a gap with respect to a circumferential surface of the dust receptacle.

Abstract: A vacuum collector includes an upright support supported on a base, a housing disposed on top of the upright support, a fan device attached to the housing, a dust collecting receptacle attached to the housing for collecting the dirt, a tubular member has one end coupled to the housing for guiding the dirt into the housing and has a manifold, and the other end coupled to a mouth, two valve devices are coupled to the mouth and the manifold for controlling the dirt to selectively flow into the housing from the mouth or from the manifold, or from the ground, the plants or work places where the machine tools are located, or the other places where are full of dirt or dust or ash.

Abstract: A cyclone dust collector is provided, including a cyclone unit that includes a first cyclone unit including a cyclone chamber to separate dust from dust-laden air, and a second cyclone unit, which is mounted in the first cyclone unit, including a plurality of cones to separate fine dust, and a cover unit that is formed on the cyclone unit to gather air discharged from the second cyclone unit and guide the air outside the cyclone dust collector, wherein the first cyclone unit includes a blocking plate at a lower part of the first cyclone unit, the blocking plate including a plurality of holes that are in fluid communication with the plurality of cones.

Abstract: A dust collecting unit of a vacuum cleaner has a dust collecting body including a first dust separating unit for separating dust from air and a first dust storing unit for storing the separated dust. A cover member is coupled to the dust collecting body and a second dust separating unit for further separating dust from the air is formed in the cover member. A second dust storing unit for storing dust separated by the second dust separating unit is formed in the dust collecting body. A dust passage for guiding the dust separated by the second dust separating unit to the second dust storing unit is also provided on the dust collecting body.

Abstract: A multi cyclone collector with an improved structure is disclosed for providing the highest number of second cyclone collector (300) by disposing a plurality of second cyclone collector (300) in a non circular shape (400) arrangement along a first cyclone collector, thereby increasing collecting efficiency.

Abstract: A portable vacuum cleaner having at least first and second cleaning stages wherein the first cleaning stage has a dirt collection member and the second cleaning stage comprises a plurality of cyclones and at least one dirt collection chamber, wherein the first and second cleaning stages are emptied separately. One cleaning stage can be removably mounted from the vacuum cleaner without removing another cleaning stage.

Abstract: A vacuum is provided with a removable filter tray that allows a user to access the filter without having to disassemble the vacuum. The filter can then be changed or cleaned and easily replaced without disassembly of the vacuum.

Abstract: In one aspect, the present invention provides a filter cleaning mechanism comprising: a filter material (37) for filtering out dust and dirt particles from air passing therethrough; a frame (32, 34, 35, 38, 39) for supporting said filter material (37); devices (31, 296; 25a, 25b, 25c, 25d) for mechanically agitating said filter material to dislodge dust and dirt particles therefrom; wherein the devices for mechanically agitating said filter material comprises elements (31, 296; 25a, 25b, 25c, 25d) for deforming said frame within its elastic limit and elements (31, 296; 25a, 25b, 25c, 25d) for rapidly releasing said frame from said deformation to cause said frame to relax to an undeformed state.

Abstract: An apparatus for the elimination of dusts from gases, with a filter arrangement, which is flown through by a loaded volume flow, and a cyclone which is arranged upstream to the filter arrangement, wherein a collector funnel below the filter arrangement forms the cover of the cyclone, wherein a branch stub forming the dust outlet opening of the collector funnel forms the dip pipe of the cyclone and an outlet opening of the cyclone is connected to a dust collector tank arranged under it.

Abstract: A filtration bag assembly may include an air permeable bag and a collar affixed thereto. The collar may include an opening that communicates with the interior of said bag and at least one panel that is movable to selectively obscure the opening. The collar includes a bottom surface and a pair of opposed tabs extending laterally from opposed lateral edges of the collar. A bracket is secured to the floor cleaning apparatus and includes a pair of opposed legs, that each includes a first ramp surface and a second ramp surface. During insertion of the collar into said bracket, the first ramp surface slidingly contacts the bottom surface and the second ramp surface slidingly contacts said tabs to move the collar upwardly into fluid communication with a nozzle.

Abstract: A cyclone separating apparatus for a vacuum cleaner includes a first cyclone with an air entrance disposed on a lower portion of the first cyclone and an air exit disposed at an upper portion of the first cyclone; a first contaminants chamber substantially enclosing the first cyclone to collect contaminants discharged from the first cyclone; a plurality of second cyclones above the first cyclone, the plurality of second cyclones being substantially perpendicular to a center axis of the first cyclone; and a second contaminants chamber disposed outside the first contaminants chamber to collect contaminants discharged from the plurality of second cyclones.

Abstract: A cyclonic chamber for use in air filtration devices. The chamber includes an apex opposite a base with sidewalls extending therebetween. The cyclonic chamber is preferably parabolic in cross-section or tubular with a hemi-spherical cap. The base contains an outflow passage and a conical filter extending therefrom. An inflow passage is provided proximate the apex. The inflow and outflow passages are parallel but not aligned. The chamber interior is smooth. The smooth interior and offset relationship of the inflow and outflow passages causes air to take a cyclonic path between the inflow passage and the filter. Debris in the airstream is pushed outward—away from the filter—by centripetal force. Eddies form proximate the base. Debris escapes the airstream there, where it either remains or, depending upon the chamber's orientation relative to gravity, falls back into the airflow where it is again directed away from the filter.

Abstract: A compact multi-cyclone dust separating is disclosed. The multi-cyclone dust separating apparatus includes a first cyclone chamber that separates dust-laden air drawn from outside, a second cyclone chamber that is disposed in the first cyclone chamber, and that separates dust-laden air drawn from the first cyclone chamber, and a third cyclone chamber that is disposed around a periphery of the first cyclone chamber, and that separates dust-laden air drawn from the second cyclone chamber.

Abstract: Disclosed is a vacuum cleaner including a suction nozzle; a dust collecting assembly including a dust collecting container having an opened top surface, a top lid for opening and closing the top of the dust collecting container, an inlet, a filtering device provided in the dust collecting container, a separation plate for preventing the impurities collected in a lower part of the dust collecting container from being risen by air flow, and an outlet for discharging clean air; and a cleaner body including a dust collecting assembly receiving recess for detachably receiving the dust collecting assembly, a polluted air outlet coupled with the inlet of the dust collecting assembly, and a clean air inlet provided on an inner wall of the dust collecting assembly receiving recess, so as to face the direction of mounting the dust collecting assembly, and communicating with the outlet of the dust collecting assembly, and a clean air conduit having a fan provided therein and discharging the clean air to the outside of t

Abstract: A dust collector cup working in the principle of fall centrifugal separation, consists of cup body (13), outlet (3) on the cup body (13), inlet (1) tangential to the circumferential wall of the cup body (13), and a separator settled in the cup body (13). The separator is composed of outlet tube (9), inlet (6) on the wall of the outlet tube (9), and the isolating shield (7) under the inlet (6) of the outlet tube (9), with the outlet tube (9) linked to the outlet (3) of the cup body (13). The fall between the horizontal positions of the lower end of inlet of the cup body (13) and the upper end of the inlet (6) of the outlet tube (9) is 0-140 mm.

Abstract: A vacuum cleaner includes a dust collector that compresses dust stored inside a dust container to minimize the volume of the dust. The dust collector would include one or more pressing plates that are used to compress the dust stored in dust collector. Various methods are used to control movements of the movable pressing plates to facilitate the compression operations. Also, various methods are used to determine when the dust collector is full and needs to be emptied.

Abstract: A dust collector has a vacuum coupling for connection to a vacuum source such as a portable vacuum cleaner or other suitable source. A vacuum reservoir is formed from a chamber between nested interlocking receptacles. A variable density pattern of inlet holes through one interlocking container into the vacuum reservoir provides better flow and capture of debris, while multiple inlets within the vacuum reservoir provide even and consistent suction. A variety of inlet geometries are presented that are suitable to a variety of purposes.

Abstract: A cyclonic separating apparatus includes a chamber for separating dirt and dust from an airflow, an inlet to the chamber and a shroud. The shroud includes a wall having inner and outer surfaces and a multiplicity of through-holes forming an outlet from the chamber. Each through-hole has an axis. The inner surface of the wall has a serrated profile having a plurality of serrations arranged around at least a part of the circumference of the wall, each serration having a first face and a second face. At least one through-hole passes through the first face of at least one serration. By providing a plurality of serrations around the inner circumference of the wall, the airflow is forced to follow a longer path through each through-hole for when compared to conventional arrangements. This reduces the amount of dirt and dust which is able to pass through the shroud.

Abstract: A surface treating appliance, such as a vacuum cleaner, includes a main body, a surface treating head and a support assembly. The support assembly is rotatably mounted to the main body for allowing the main body to be rolled along a surface. The support assembly also houses a component of the appliance, such as a motor for driving a surface-agitating device. Alternatively, or additionally, the support assembly may accommodate a fluid inlet for receiving fluid flow, a fluid outlet for exhausting fluid and a device for acting on the fluid flow received by the inlet such as a filter or suction apparatus.

Abstract: A floor cleaning apparatus includes a housing and a dirt collection vessel carried on that housing. The dirt collection vessel includes a first air inlet, a second air inlet, a dirt collection chamber, a filter chamber and a clean air outlet. A filter is received in the filter chamber. A suction generator is carried on the housing. The floor cleaning apparatus also includes a flow control valve assembly. The flow control valve assembly is selectively displaceable between a first or home position wherein dirt and debris are captured in the dirt collection vessel and a second or filter cleaning position wherein clean air is drawn through at least a portion of the filter to clean the filter. An activator is provided for automatically displacing the flow control valve assembly between the first and second positions.

Abstract: Object of the present invention is to provide a dust collecting device (10) for a vacuum cleaner of which dust collecting performance is improved. The dust collecting device (100) of the present invention includes a primary cyclone unit (200) having two primary cyclones (210, 220), arranged in parallel, for separating dust by a cyclone principle, a secondary cyclone unit (300) having at least two secondary cyclones (310, 320), which receives air from the primary cyclones (210, 220) on an outer side of the primary cyclones (210, 220) for separating dust by the cyclone principle, and a dust container (110) having the primary cyclone unit (200) and the secondary cyclone unit (300) mounted thereto, and a primary dust collecting space for storing the dust separated at the primary cyclone unit (200), and at least one secondary dust collecting space for storing the dust separated at the secondary cyclone unit (300) formed therein.

Abstract: A cyclone separator assembly comprises a cyclone separator that removes large particles of dirt from a working airstream as it flows through the cyclone separator, and the separated large particles of dirt are deposited into a dirt cup. The cyclone separator assembly further includes a fine particle separation member comprising a plurality of apertures for separating fine particles of dirt from air in the cyclone separator or the dirt cup.