Abstract: A dust-collecting apparatus of a vacuum cleaner includes a first dust-collecting unit, a second dust-collecting unit, and a dust receptacle. The second dust-collecting unit is adapted to be mounted to one side of the first dust-collecting unit. The dust receptacle is adapted to be mounted on a lower part of both the first and the second dust-collecting units, and the dust receptacle is adapted to store dust separated by the first and the second dust-collecting units. The first and second dust-collecting units are arranged so that air discharged from the first dust-collecting unit enters the second dust-collecting unit.

Abstract: The system of the present invention includes a centripetal cyclone for separating particulate material from a particulate laden gas solids stream. The cyclone includes a housing defining a conduit extending between an upstream inlet and a downstream outlet. In operation, when a particulate laden gas-solids stream passes through the upstream housing inlet, the particulate laden gas-solids stream is directed through the conduit and at least a portion of the solids in the particulate laden gas-solids stream are subjected to a centripetal force within the conduit.

Abstract: The multi-cyclone dust separating apparatus includes a first cyclone unit having a body and including an air inlet disposed at a side of the body, a first cyclone chamber adapted to form a first space for whirling air from the air inlet to separate dust form the air; a second cyclone unit adapted to be detachably disposed at the body of the first cyclone unit and including, a second air inlet to draw the air from the first cyclone chamber, at least one cyclone for whirling the air from the first cyclone chamber to provide a second separation of dust from the air; and a dust bin adapted to be detachably mounted to at least one of the second cyclone unit and the first cyclone unit.

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 separating apparatus for a vacuum cleaner includes a first cyclone having an inclined part and adapted for separating dust and air; a first dust chamber adapted to be disposed substantially around the first cyclone and to be in fluid communication with the first cyclone; at least one second cyclone for separating dust and air adapted to be disposed above the first cyclone and to be in fluid communication with the first cyclone; and a second dust chamber adapted to be in disposed within the first cyclone and to be in fluid communication with the second cyclone.

Abstract: A cyclone collector is provided that includes a body having an inlet that draws air therein, a cyclone provided inside of the body, and an outlet that discharges air from the body. The outlet includes a passage portion having a passage and a closed portion under the passage portion.

Abstract: A cyclone dust separating apparatus for separating dust from external air drawn in thereto and discharging the separated dust, comprises at least one first cyclone body having a tubular shape and forming a first cyclone chamber where the external air is rotated; and at least one second cyclone body forming a second cyclone chamber where the air discharged from the first cyclone chamber is rotated again to separate dust, wherein the external air is drawn in through a lower end of the first cyclone chamber and discharged through an upper end of the first cyclone chamber, and the air discharged from the first cyclone chamber is drawn in through an upper end of the second cyclone chamber and discharged through an upper end of the second cyclone chamber.

Abstract: Disclosed herein is a cyclone for separating fine particles from a gas. The cyclone includes a cyclone body having an upper end with an inlet and a lower end with a particulate outlet, gas outlet tube with an upper end that extends upwardly into the lower end of the cyclone body, and a vortex breaker. The upper end of the gas outlet tube is connected to the lower end of the cyclone body by a slip joint. The configuration of the cyclone provides for efficient removal of fine particles as compared to conventional techniques. A vessel containing cyclones, and methods of separation using the cyclones and vessel, also are disclosed.

Abstract: Disclosed is a cyclone dust collection apparatus. The cyclone apparatus comprises a cyclone body having a first cyclone section and a plurality of cyclone cones arranged around a lower part of the first cyclone, each cyclone cone having a conical shape whose diameter is reduced as approaching the top end thereof; a top cover joined to the top end of the cyclone body and formed with a helical air inflow duct for introducing ambient air into the first cyclone section; an inflow/outflow guide cover joined to the lower end of the cyclone body so as to communicate the first cyclone section and the plurality of cyclone cones; and a discharge cover joined to the lower part of the inflow/outflow guide cover so as to collect the air discharged through the inflow/outflow guide cover and discharge the collected air to the outside of the cyclone dust collection apparatus.

Abstract: A multi-cyclone dust collection apparatus is disclosed that comprises a first cyclone having an air inlet, in which the air introduced into the first cyclone through the air inlet is caused to swirl and ascend in the first cyclone so that dust is separated from the air; and a plurality of second cyclones arranged around the lower part of the first cyclone, in which the air discharged from the first cyclone into the second cyclones is further caused to swirl and ascend so that dust is separated from the air. Each of the second cyclones is provided with an air outlet through which the purified air is discharged. The air inflow port is provided at the bottom of the first cyclone and the outflow ports are provided at the lower ends of the second cyclones.

Abstract: Thermal cracking in a riser cracking, closed cyclone, fluidized catalytic cracking process is reduced. A snorkel or flow conduit having an inlet just above the catalyst stripper moves stripper vapor into the closed cyclone. The system preferably operates without a stripper cap, relying on fluid dynamics to isolate stripper vapor from upper parts of the vessel containing the riser outlet. Preferably the snorkel is at least partially supported by, and ideally is inside, the primary cyclone dipleg. Reduced residence time of stripper vapor in the vessel containing the stripper and the closed cyclone system reduces thermal cracking of stripper vapor.

Abstract: The present disclosure relates to a dust collecting apparatus. The dust collecting apparatus includes a cyclone body forming a cyclone chamber; a plurality of inlets formed at the cyclone body, and causing air to enter through; and a discharging port formed at the cyclone body, and discharging the air from the cyclone chamber, wherein each inlet of the plurality of inlets is formed at a different height at a side of the cyclone body so that the air is divided to enter the cyclone chamber at a different height.

Abstract: An apparatus separates solids from gas in a vessel using cyclones. The cyclones have centers located at different distances from a center of the vessel, but the inlets to the cyclones are located at the same distance from the center to balance the proportions of catalyst fines entering each cyclone.

Abstract: A vacuum cleaner includes a pair of low efficiency cyclones connected upstream of respective groups of high efficiency cyclones by respective elongate ducts. The high efficiency cyclones of each group can be arranged in a line or a cluster extending away from their respective low efficiency cyclone, such that at least a portion of one side of the low efficiency cyclone is exposed. The high efficiency cyclones can be connected to their respective elongate ducts at respective positions along the length thereof, with each cyclone comprising an inlet connecting to the duct. The inlets of each high efficiency cyclone can be stepped along the axis of the duct with respect to the inlet of each other cyclone of the group, in a direction which extends across the width of the duct.

Abstract: A dust separating apparatus for a vacuum cleaner includes a dust collection casing with an air inlet at a lower portion, a mesh filter formed on a bottom surface of the dust collection casing to firstly filter the contaminant from the drawn-in air, a plurality of cyclones formed in parallel in the dust collection casing to secondly filter the contaminant in the air drawn in via the air inlet, and a dust collection part formed at one side of the plurality of cyclones to collect the contaminant separated from the air. The air flowed in the air inlet formed at the lower portion of the dust collection casing is sequentially discharged via the mesh filter formed on the bottom surface of the dust collection casing and the plurality of cyclones.

Abstract: The present invention relates to a home cleaning appliance including a housing including a nozzle having a main suction opening and a brush. An air stream suction source, mounted to the housing, includes a suction airstream inlet and a suction airstream outlet. The suction source selectively establishes and maintains a suction airstream from the nozzle main suction opening to the airstream outlet. A cyclone main body is mounted to the housing and is in communication with the nozzle main suction opening. The cyclone main body includes an upstream, first, cyclonic separator for separating dust from dust-laden air, and at least one downstream, second, cyclonic separator for separating remaining dust particles from the air. A dirt cup is connected to the cyclone main body.

Abstract: A vacuum cleaner includes at least one cyclone dust separation unit. A cover is formed over the cyclone dust separation unit to attenuate noise generated by the cyclone unit. Dimples or recesses may be formed on the interior of the cover to further attenuate noise. In addition, a noise attenuating material may be inserted between the cyclone dust separation unit and the cover.

Abstract: A process to separate solids from a solids laden gaseous flow containing more than 100 mg/Nm3 solids by separating solids from the gaseous flow using a gas-solids separator resulting in a gaseous flow containing less than 50 mg/Nm3 solids and an underflow having the separated solids and part of the gaseous flow as fed to the gas-solids separator; separating part of the solids from the underflow in a cyclone wherein solids and a gaseous flow containing still some solids are obtained; contacting the gaseous flow obtained with water to separate the solids and obtain a gaseous flow containing between 0 and 50 mg/Nm3 solids; and combining the gaseous flows which are poor in solids.

Abstract: A cyclone dust separating apparatus for separating dust from external air drawn in thereto and discharging the separated dust, comprises at least one first cyclone body having a tubular shape and forming a first cyclone chamber where the external air is rotated; and at least one second cyclone body forming a second cyclone chamber where the air discharged from the first cyclone chamber is rotated again to separate dust, wherein the external air is drawn in through a lower end of the first cyclone chamber and discharged through an upper end of the first cyclone chamber, and the air discharged from the first cyclone chamber is drawn in through an upper end of the second cyclone chamber and discharged through an upper end of the second cyclone chamber.

Abstract: A multi-cyclone dust separating apparatus has a main cyclone part comprising one or more cyclones, a sub cyclone part comprising one or more cyclone cones, and arranged in substantially parallel relation with respect to the main cyclone part, and a dust collecting casing provided to surround the main cyclone part and the sub cyclone part, and comprising a dust collecting chamber where dust separated in the main cyclone part and the sub cyclone part is collected. The dust collecting casing has a non-constant radius on the same height from the bottom.

Abstract: A dual-cyclone type dust collector having a compact size is provided, including a first dust collecting unit that includes a first cyclone chamber, a second dust collecting unit that includes a second cyclone chamber that is disposed at a diagonal to the first cyclone chamber, and a housing that receives the first dust collecting unit and the second dust collecting unit, and a part of which is formed as a wall of the first cyclone chamber and the second cyclone chamber.

Abstract: Disclosed is a multi-cyclone dust separating apparatus, comprising a cyclone body, a top cover and a discharge cover. The cyclone body includes a main cyclone and a plurality of cyclone cones communicating with the main cyclone and arranged around a lower part of the main cyclone, each of which has a reverse conical shape whose diameter is reduced as approaching the top end thereof. The top cover is fitted on the top of the cyclone body and has an air inflow port introducing ambient air into the main cyclone. The discharge cover is fitted on the bottom of the main cyclone and collects and discharges the air discharged from the plurality of cyclone cones. Most of the air introduced into the top of the main cyclone through the air inflow port is discharged to the bottom of the main cyclone without being reversed to flow upwardly and then introduced into the plurality of cyclone cones.

Abstract: A vacuum cleaner includes both a main dust separation unit and a secondary dust separation unit. One of the dust separation units is provided on a main body of the vacuum cleaner, and the other dust separation unit is provided on a removable dust collection unit that is mountable on the main body.

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: Phosphine gas is generated by agitating a reaction mixture of a metal phosphide and water with agitation air in a reaction pot of a phosphine gas generator. The resulting phosphine gas is then diluted with dilution air to produce a fumigant phosphine gas which is directly delivered to a commodity for fumigation. The reaction pot does not have any rotating means such as agitators, rotors, or stirrers. The generator provides on-site generation of phosphine gas in a rapid manner improving the fumigation efficiency for a commodity, such as grain, preferably contained within a storage structures, such as a grain silo. The generator has a built in deactivation system for the unused metal phosphide and phosphine gas.

Abstract: A multi-cyclone dust separating apparatus includes: a multi-cyclone unit including a first cyclone chamber body having a first cyclone chamber and at least one protection chamber formed around at least a portion of an outer circumference of the first cyclone chamber, and at least one secondary cyclone chamber body disposed in the protection chamber, each secondary cyclone chamber body having at least one secondary cyclone chamber; a cover unit connecting an upper end of the multi-cyclone unit and guiding air discharged from the first cyclone chamber to the at least one secondary cyclone chamber; a dirt collecting unit adapted to connect to a lower end of the multi-cyclone unit and configured to collect dirt separated from the air in the first and secondary cyclone chambers; and an air discharge duct configured to discharge air that has passed through the multi-cyclone unit.

Abstract: A separator/collector assembly (50) able to be installed in relation to a body (51) of a suction cleaner, the separator/collector assembly providing storage for a suction hose which can be deployed for use when required.

Abstract: A vacuum cleaner comprises a cyclonic separator having a first cyclone and a plurality of downstream secondary cyclones. The first cyclone comprises a side wall defining a first cyclonic chamber, and the secondary cyclones each comprise a side wall defining a second cyclonic chamber. A dirt cup assembly is mounted below the cyclonic separator to collect contaminants separated in the first and second cyclonic chambers. The secondary cyclones can be arranged around the first cyclone side wall and form a gap between adjacent secondary cyclones so that the first cyclone side wall is exposed at the gap. A working air conduit can extend through the first cyclone and the dirt cup assembly to couple the secondary cyclones to a suction source located below the dirt cup assembly. Furthermore, the secondary cyclones can have a vortex stabilizer.

Abstract: A cyclone dust collecting apparatus comprises a first cyclone for centrifuging dust from drawn-in air; one or more second cyclones for separating dust from air which is passed through the first cyclone; and an electrode unit mounted to at least one of the first and the second cyclones.

Abstract: A multi-cyclone dust separator according to an embodiment of the present invention comprises a first cyclone unit having a first cyclone chamber and a first dust receptacle enclosing a circumference of the first cyclone chamber; and a second cyclone unit disposed below the first cyclone unit and having a plurality of second cyclone chambers and a second dust receptacle disposed under the second cyclone chambers to collect dust.

Abstract: Provided is a dust collection unit for a vacuum cleaner that can provide an improved collection efficiency, a reduced reduce, and a good outer appearance. The dust collection unit includes: a first filtering chamber for filtering first foreign objects; a plurality of second filtering chambers formed along an outer circumference of the first filtering chamber to receive air passed through the first filtering chamber and filter second foreign objects by using cyclone airflow, the second foreign objects being smaller than the first foreign objects; an air intake hole through which air is introduced into the second filtering chambers; at least one air introduction guide extended outward from the air intake hole to guide a flow of air introduced into the second filtering chamber; and a storing chamber formed under the filtering chamber.

Abstract: A dust collection assembly of a vacuum cleaner is provided. The dust collection assembly includes a dust collecting box, a filter, a flow guide unit, an exhaust guider, and an upper cover. The dust collecting box and the flow guide unit are integrally formed in a single body. The dust collecting box includes a first and second dust collecting spaces for collecting foreign objects. The filter is disposed in the inside of the dust collecting space to primarily filter foreign objects during operation of a cyclone. The flow guide unit guides airflow and has small cyclones integrally formed therein, for secondarily filtering the foreign objects in air. The exhaust guider guides airflow and has a plurality of discharge holes through which air filtered by the small cyclone flows. The upper cover is disposed on the upper side of the exhaust guider.

Abstract: A cyclonic separator/collector device for a suction cleaner, comprising a housing and at least one cyclonic separator disposed within the housing, the or each cyclonic separator having a cyclone body with a circumferential wall of which at least a major part is spaced from the housing; the space between the housing and wall of the cyclone body(s) receiving separated dust from the cyclonic separator(s); wherein the space between the cyclone body and the housing includes a sound-insulating material. The arrangement provides sound insulation for the cyclonic separators.

Abstract: A cyclonic separator for a suction cleaner comprises a cyclone body of which at least part is afforded by components which fit together at interfaces extending axially of the cyclone body. The components may also afford air inlet and dust outlet passages, and at least partially define a dust-collecting chamber.

Abstract: A multi-cyclone apparatus is capable of separating and collecting contaminants by three stages. The multi-cyclone apparatus has a first collecting unit which separates large-sized contaminants from an air which is drawn through an air suction port, a cyclone body comprising a second cyclone which is communicated with the first collecting unit and separates middle-sized contaminants from the drawn air, and a plurality of third cyclones arranged around the second cyclone and separate small-sized contaminants from the drawn air, an air discharge port communicated with the cyclone body, through which the air is discharged after passing through the third cyclones, and a contaminant receptacle provided to a lower end of the cyclone body, and collects contaminants separated from the second and the third cyclones.

Abstract: A multi-cyclone dust separator according to an embodiment of the present invention comprises at least three dust separation units for separating dust stepwise from relatively larger size. The dust separation units comprise a first dust separation unit primarily separating dust from external air drawn in; a second dust separation unit secondarily separating dust from the air primarily dust-separated by the first dust separation unit; and a third dust separation unit thirdly separating dust from the air secondarily dust-separated by the second dust separation unit. Here, the first to third dust separation units are multi-layered in a serial manner.

Abstract: A multi-stage gas-solids separator having at least 4 stages is configured so that the penultimate stage of separators is operated in an underflow condition. The underflow from the penultimate stage is used as the input flow for the final stage of separators. The multi-stage separator is preferably composed of cyclone separators, with the final two stages of separators housed in external disengaging vessels.

Abstract: A cyclone dust separating apparatus has a first cyclone chamber for separating particles from the externally-drawn fluid by centrifugal force, one or more second cyclone chambers for separating particles from the fluid discharged from the first cyclone chamber by centrifugal force, and one or more third cyclone chambers for separating particles from the fluid discharged from the second cyclone chambers, and causing the fluid to be discharged out via a discharge passage. The second and the third cyclone chambers are arranged in radial relation with respect to the first cyclone chamber, and thus, surround the first cyclone chamber. Therefore, the cyclone dust separating apparatus provides multi-stage centrifugal cleaning process and improved cleaning efficiency, while remaining compact-sized.

Abstract: A cyclone cleaner that enables noise frequencies generated in a plurality of cyclone chambers to be different from one another, thereby preventing noise from overlapping at a specific frequency bandwidth, and therefore, reducing noise. The cyclonic cleaner includes a suction unit, a cyclonic separating apparatus, and a blowing unit. The cyclonic separating apparatus includes a housing, a plurality of cyclone chambers disposed in the housing in the circumferential direction thereof, and a plurality of partitions disposed between the respective cyclone chambers to mount the cyclone chambers in a plurality of individual divided spaces, respectively. The partitions are arranged such that angles between the respective adjacent pairs of partitions are different from one another. Also, the partitions are arranged such that the intervals between the respective partitions are different from one another, and the divided spaces have different capacities.

Abstract: A cyclone vacuum cleaner including a plurality of cyclone chambers arranged in a group. The cyclone chambers are configured such that frequency characteristics of noises generated from respective cyclone chambers are different from each other.

Abstract: A cyclone dust collecting apparatus comprises at least one second cyclone unit having a first cyclone unit, an air passage for guiding air discharging via the first cyclone unit, and a discharge pipe wherein the discharge pipe comprises a passage guide member for guiding air discharged from the second cyclone unit. Because the passage guide member is mounted in the discharge pipe of the second cyclone part, a load of suction source reduces to decrease power consumption for operation of a cyclone dust collecting apparatus.

Abstract: A dust collecting apparatus for a vacuum cleaner has a first cyclone dust collecting part and a second cyclone dust collecting part that are arranged substantially parallel with respect to an air inflow opening of a vacuum cleaner main body, and may be mirror images of each other. The first cyclone dust collecting part comprises a first suction opening and a first discharge opening, and the second cyclone dust collecting part comprises a second suction opening and a second discharge opening. The first and second suction openings are connected with the air inflow opening of the vacuum cleaner main body, and the first and second discharge openings are connected with a vacuum suction chamber of the vacuum cleaner main body. Accordingly, a dust collecting apparatus for a vacuum cleaner can be realized, having an advanced suction capability and dust separation capability.

Abstract: An upright vacuum cleaner comprises a housing having a suction airstream inlet and a suction airstream outlet. A dirt container 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 airflow chamber and a second cyclonic airflow chamber, 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 is disposed at a top portion of the dirt container. The air manifold includes an inlet section through which dirty air passes and an outlet section.

Abstract: A cyclonic vacuum cleaner comprises a first stage 10 comprising a single cyclone separator for separating heavier dirt and dust particles and a second stage 11 comprising a plurality of cyclone separators 25 arranged in parallel in a plurality of groups, each group of cyclone separators 25 comprising a respective inlet duct 24, each inlet duct 24 being connected at its upstream end to the first stage 10 and at its downstream end to the cyclone separators 25 of its respective group.

Abstract: A particle separation apparatus is disclosed. The particle separation apparatus may be for sample air stream preparation and delivery in particle detection systems. The particle separation apparatus may include a first vortex separator coupled to a second vortex separator for selecting particles in the air stream that are within a desirable size range for particle detection. The second vortex separator may further increase the concentration of particles within the desirable size range per unit volume. The particle separation apparatus may deliver the size-selected air stream to a detector, such as a laser-induced fluorescence detection system.

Abstract: Disclosed is a dust collecting apparatus is provided that includes a dust canister body, a part of which becomes an exposed side exposed outside a cleaner body. The cleaner body has a first dust separating chamber for separating large-sized dirt and second dust separating chamber for collecting fine dust; a cyclone body having a cyclone chamber which separates the fine dust from the air passing through the first dust separating chamber; and an outlet pipe protruding from lower surfaces of the first and second cyclone bodies to upper sides of the first and second cyclone chambers, wherein at least a part of the exposed side of the dust canister body is made of a transparent material so as to simultaneously see through the first and second dust separating chambers, and at least a part of the cyclone body is made of the transparent material to see through the cyclone body.

Abstract: A dust collecting apparatus for a vacuum cleaner, comprising a dust canister body, a part of which becomes an exposed side exposed outside a cleaner body upon mounting in the cleaner body, and which comprises a first dust separating chamber for separating heavy dirt from air, and second and third dust separating chambers for collecting fine dust from the air passing through the first dust separating chamber; first and second cyclone bodies having first and second cyclone chambers which separates the fine dust from the air passing through the first dust separating chamber; and first and second outlet pipes, wherein the first and second cyclone bodies are eccentrically disposed in the first and second dust separating chambers so as to form a protruded portion which is exposed from the exposed side of the dust canister body, and at least the protruded portion is made of a transparent material.

Abstract: A cyclone dust separating apparatus and a vacuum cleaner with the same is disclosed. The cyclone dust separating apparatus includes a first cyclone for separating large dust particles from air, a plurality of second cyclones for separating minute dust particles from air via a centrifugal force after dust separation at the first cyclone, and a cover disposed on an upper portion of the first cyclone and the second cyclones. The cover includes a conical guide formed at a lower center to guide air discharged from the first cyclone into the second cyclones. Because drawn-in air is repeatedly cleaned by a plurality of cyclones, the cyclone dust separating apparatus can be provided with a compact structure, can provide an effective cleaning operation, and can prevent deterioration of a suction force.

Abstract: Thermal cracking in a riser cracking, closed cyclone, fluidized catalytic cracking process is reduced. A snorkel or flow conduit having an inlet just above the catalyst stripper moves stripper vapor into the closed cyclone. The system preferably operates without a stripper cap, relying on fluid dynamics to isolate stripper vapor from upper parts of the vessel containing the riser outlet. Preferably the snorkel is at least partially supported by, and ideally is inside, the primary cyclone dipleg. Reduced residence time of stripper vapor in the vessel containing the stripper and the closed cyclone system reduces thermal cracking of stripper vapor.

Abstract: Disclosed are a cyclone vessel dust collection and a vacuum cleaner including the same. The cyclone vessel dust collector comprises a cyclone vessel main-body including a primary cyclone vessel unit for separating dusts from dust containing air, and one or more secondary cyclone vessel units for separating dusts from the air passing through the primary cyclone vessel unit, the secondary cyclone vessel units being arranged to surround at least a part of the primary cyclone vessel unit; and a dirt collection bin for receiving dusts or the like separated by the cyclone vessel main-body, wherein the cyclone vessel main-body has an outer circumference with a non-constant radius. Therefore, the cyclone vessel dust collector can have a dust collection capability of large capacity with a small size.