Abstract: An upright surface cleaning apparatus such as an extractor has an upright section moveably mounted to a surface cleaning head. The upright section comprises a first stage liquid separator and a second stage cyclone separator, wherein the cyclone separator is positioned above and downstream from the first stage liquid separator when the upright section is in the storage position.

Abstract: A vacuum cleaner includes an air treatment or debris removable assembly with a multi-layer filtration stage. The multi-layer filtration stage can include an outer mesh screen, a louvered exhaust grill, and a multi-layer filter. Optionally, an inner perforated exhaust grill is also provided. The debris removable assembly can further include a cyclonic filtration stage.

Abstract: A surface cleaning apparatus, such as an extractor, has a separation stage comprising a separator and a separated liquid container in communication with a separated element outlet of the separator. When the surface cleaning apparatus is in a vertical orientation, the separated liquid container has a first portion underlying the separator, a second portion laterally spaced from the first portion and positioned below the separator and a third portion positioned above the second portion, and the third portion has a volume that is at least 80% of a volume of the first portion.

Abstract: A dust collector includes a cylindrical housing forming an outer appearance of the dust collector; a cyclone inside the housing to cause a swirling flow to separate dust from air introduced into the housing; axial inlet type swirl tubes receiving air and fine dust that have passed through the cyclone, and causing a swirling flow to separate the fine dust from the air; and a mesh surrounding an outside of the axial inlet type swirl tubes to form a boundary between the cyclone and the axial inlet type swirl tubes, wherein the axial inlet type swirl tubes are stacked in stages and the axial inlet type swirl tubes in each stage are arranged in first and second columns that are provided in opposite directions to each other, and axial lengths of the axial inlet type swirl tubes gradually increase toward the center of each stage.

Abstract: A vacuum cleaner includes a cleaner main body, a suction device, a suction motor, and a dust container. The dust container includes a dust collection body configured to contain dust, an opening/closing portion rotatably coupled to the dust collection body and configured to rotate to thereby open and close at least a portion of the dust collection body, and an operation portion connected to the dust collection body and configured to rotate in both a first direction and a second direction opposite the first direction. The opening/closing portion is configured to rotate based on the operation portion rotating in the first direction, and configured to rotate based on the operation portion rotating in the second direction.

Abstract: A surface cleaning apparatus, such as an extractor, has a separated liquid reservoir wherein the separated liquid reservoir includes a liquid sequestering member.

Abstract: A hand vacuum cleaner has an air flow path extending from a dirty air inlet to a clean air outlet. An air treatment member is positioned in the air flow path. A removable pre-motor filter assembly is positioned downstream of the air treatment member and upstream of a suction motor, the pre-motor filter assembly comprising a pre-motor filter and a filter support member, the filter support member having an outlet conduit wherein a terminal end of the outlet conduit extends at a first angle to a direction of air flow through the outlet conduit.

Abstract: A steam tip for frothing milk foams comprises a tip body, a connector for connecting to a steam source providing a steam flow, wherein the tip body is hollow inside, wherein the tip body further comprises at least a top side, at least a bottom side, and at least two lateral sides, wherein the connector is on the top side of the tip body, wherein each of the at least two lateral sides forms an angle with the bottom side of the tip body between about 0 degree and about 90 degrees, and wherein at least one steam outlet is formed on each of said at least two lateral sides of said tip body.

Abstract: A cleaner includes: a suction unit; a suction motor that generates suction force for sucking air through the suction unit and includes an impeller; a dust separation unit that includes one or more cyclone units generating cyclonic flow to separate dust from air flowing inside through the suction unit; a dust container that stores dust separated by the dust separation unit and is disposed under the suction motor; a battery disposed behind the dust container to supply power to the suction motor; and a handle disposed behind the suction motor, wherein a rotational axis of the impeller and an axis of the cyclonic flow vertically extend and an extension line from the rotational axis of the impeller passes through the one or more cyclone units.

Abstract: A cyclonic separator assembly having a first end, a second end, and an inlet for receiving a flow of dirty air. A separation chamber receives dirty air from the inlet and includes an air flow outlet formed within the separation chamber configured such that air is drawn through the outlet in a direction generally towards the first end of the separator assembly. The chamber further includes a dirt outlet defining an opening in a wall of the separation chamber. The assembly further includes a passage defining an air flow path from the air flow outlet towards a separator outlet in a direction generally towards the second end of the separator assembly such that, in use, the separator outlet is adapted to communicate with the suction inlet of the cleaner body so as to draw dirty air into the separator assembly.

Abstract: A battery pack for selective attachment to a receptacle includes a housing enclosing a battery, a handle extending from the housing and defining an aperture between the housing and the handle, and a latching arrangement coupled to the housing and engageable with the receptacle for inhibiting the battery pack from being removed from the receptacle. The latching arrangement includes a latch member and an actuator movable relative to the housing from a first position to a second position to move the latch member from a latched position to and an unlatched position. The actuator is at least partially located within the aperture when the actuator is in the first position.

Abstract: A autonomous cleaner includes: a cleaner body including a wheel unit for autonomous traveling; a suction unit provided to protrude from one side of the cleaner body, the suction unit sucking air containing dust; a sensing unit provided at the one side of the cleaner body; a dust container accommodated in a dust container accommodation part formed at the other side of the cleaner body, the dust container collecting dust filtered from sucked air; and a dust container cover hinge-coupled to the cleaner body to be rotatable, the dust container cover being provided to cover a top surface of the dust container when the dust container cover is coupled to the dust container.

Abstract: A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet and includes a cyclone bin assembly, a screen and a suction motor positioned in the air flow path. The screen is axially removable from the cyclone bin assembly.

Abstract: Exemplary embodiments are directed to pool cleaners that remove debris from water using a plurality of cyclonic flows, or that include a removable impeller subassembly, a check valve for a debris canister, a particle separator assembly having a handle that locks to the pool cleaner, a modular roller drive gear box, or a roller latch that secures a roller to the pool cleaner. Exemplary embodiments are also directed to the check valve and the roller latch themselves. Exemplary embodiments are directed to a filter medium for pool cleaners that includes embossments providing flow channels for water, and to roller assemblies for pool cleaners. Exemplary embodiments are directed to pool cleaners including alternative pump motor engagements. Exemplary embodiments are directed to pool cleaners power supplies that include a potted and contoured power board assembly, and to kickstands therefor. Exemplary embodiments are directed to a pool cleaner caddy, and removable wheels therefor.

Abstract: A surface cleaning apparatus has a cyclone chamber provided in an air flow path. The cyclone chamber has a screen assembly with an outlet section, a longitudinally spaced apart distal section and a longitudinally extending porous section. The outlet section includes a non-porous member extending longitudinally inwardly an outlet section length from an outlet end of the outlet section to a longitudinally inwardly positioned inlet end of the outlet section. The outlet end of the outlet section overlies a cyclone air outlet. The porous section extends longitudinally inwardly from an outlet end of the porous section that is located at the inlet end of the outlet section. The outlet section length is at least as long as the cyclone outlet port length.

Abstract: An object of the present invention is to provide an analysis apparatus in which local analysis of a substrate with ICP-MS is automated. The present invention relates to an automatic analysis apparatus for a local region of a substrate, including: a nozzle for local analysis having: analysis-liquid supply means that ejects analysis liquid onto a substrate; analysis-liquid discharge means that takes the analysis liquid including an object to be analyzed from the substrate into the nozzle to feed the analysis liquid to a nebulizer; and exhaust means including an exhaust channel in the nozzle; automatic liquid-feed means that automatically feeds the collected analysis liquid to ICP-MS; flow adjustment means that adjusts the flow of the analysis liquid; and automatic control means that simultaneously performs local analysis and analysis of the object to be analyzed with the ICP-MS to perform automatic analysis to a plurality of adjacent predetermined regions, successively.

Abstract: There is provided a robot cleaner having an improved dust-collecting capability and an improved suction force and capable of being manufactured in a small size. The robot cleaner includes a main body comprising a fan motor and having a suction port provided in one side thereof; a plurality of cyclone units configured to separate foreign substances in air suctioned through the suction port; and a plurality of suction flow paths connecting the plurality of cyclone units and the suction port.

Abstract: A hand vacuum cleaner has an air treatment member having an air inlet passage which comprises a handle for the air treatment member and a door lock of the air treatment member wherein, when a user's hand is holding the air treatment member by the air treatment member handle, the door release actuator is operable by the same hand.

Abstract: Exemplary embodiments are directed to pool cleaners that remove debris from water using a plurality of cyclonic flows, or that include a removable impeller subassembly, a check valve for a debris canister, a particle separator assembly having a handle that locks to the pool cleaner, a modular roller drive gear box, or a roller latch that secures a roller to the pool cleaner. Exemplary embodiments are also directed to the check valve and the roller latch themselves. Exemplary embodiments are directed to a filter medium for pool cleaners that includes embossments providing flow channels for water, and to roller assemblies for pool cleaners. Exemplary embodiments are directed to pool cleaners including alternative pump motor engagements. Exemplary embodiments are directed to pool cleaners power supplies that include a potted and contoured power board assembly, and to kickstands therefor. Exemplary embodiments are directed to a pool cleaner caddy, and removable wheels therefor.

Abstract: A mobile cleaning system to be used for cleaning organic liquids from a hard surface includes tanks for storing water, and for storing used, dirty water after cleanup. A water-based cleaner is sprayed onto the spill, which can be, but need not be, done in connection with the cleanup system. A high throughput vacuum system removes the hot water and the spill materials concurrently as the hot water is applied to the treated area. The vacuumed liquids are stored in an on-board tank for later disposal.

Abstract: According to one embodiment, an upright liquid filtration vacuum cleaner includes a vacuum nozzle head and a housing moveably coupled to the vacuum nozzle head. The vacuum cleaner further includes a liquid tank that includes a wall defining an interior volume and a tank intake channel positioned in the interior volume. The interior volume is configured to hold a liquid. The tank intake channel is positioned to direct debris received from an intake passageway into the liquid tank so that the liquid in the interior volume of the liquid tank filters the debris into the liquid so that clean air is exhausted. The vacuum cleaner further includes a separator configured to generate an airflow. The vacuum cleaner is configured to seal the intake passageway when the vacuum cleaner is deactivated and further configured to unseal the intake passageway when the vacuum cleaner is activated.

Abstract: A cyclonic separator having a first cyclone stage; and a second cyclone stage comprising a plurality of cyclone bodies arranged in parallel, each cyclone body comprising an inlet and an outlet, the plurality of cyclone bodies being divided into at least a first layer and a second layer; wherein the second cyclone stage further comprises a first plenum common to the cyclone bodies, the first plenum extending from the outlet of the first cyclone stage to the inlets of each of the cyclone bodies of the second cyclone stage.

Abstract: A surface treatment apparatus may include an air flow path extending from a dirty air inlet to a clean air outlet and a main body. A suction motor may be provided in the air flow path. A cyclone bin assembly may be provided in the air flow path and may be removably mountable to the main body. A pre-motor filter chamber may be provided and may have a rear wall, a sidewall extending and an openable front wall opposite the rear wall and sealingly enclosing the pre-motor filter chamber. The pre-motor filter chamber may be disposed longitudinally between the cyclone bin assembly and the suction motor and the cyclone bin assembly may be positioned in front of at least a portion of the openable front wall of the pre-motor filter chamber. The front wall may be accessible when the cyclone bin assembly is removed from the main body.

Abstract: A vacuum cleaner including a debris separator having a cyclonic separator including a cylindrical wall having a first end and a second end, the cylindrical wall located in within the housing, the cyclonic separator further including a dirty air inlet, a clean air outlet, an end wall at the first end of the cylindrical wall, and a debris outlet adjacent the second end of the cylindrical wall. The debris separator further includes a lid coupled to an upper end of the housing, a debris collection chamber located within the housing and in fluid communication with the debris outlet of the cyclonic separator, and a door coupled to a lower end of the housing to empty the debris collection chamber through the lower end of the housing. A portion of the cyclonic separator is removable from the housing through the lower end of the housing.

Abstract: A vacuum cleaner has a separation/collection module with a housing and a cover pivotally mounted to the housing by a hinge. A filter assembly is carried by the cover and includes a filter media. When a user of the vacuum cleaner opens the cover, the filter media can be seen by the user.

Abstract: A vacuum cleaner has a cyclone separator for separating dirt and other contaminants from a dirt-containing working airstream and a collection chamber collecting the separated dirt. The vacuum cleaner can further include fines catcher defining a second collection chamber, where the bottom end of the fines catcher is spaced from the bottom wall of the first collection chamber.

Abstract: A robot cleaner includes: a suction module configured to suck dust-included air; a cyclone module configured to separate dust from the dust-included air sucked through the suction module, and having a dust discharge opening; a first air flow guide and a second air flow guide spaced apart from each other, and connecting the suction unit to the cyclone unit; a dust box detachably coupled to the dust discharge opening of the cyclone module, and provided between the first and second air flow guides; a drive module provided between the first and second air flow guides; and a dust compressor provided in the dust box, and mechanically coupled to the drive module when the dust box is mounted to the cyclone module, and formed to be rotatable bi-directionally based on a driving force from the drive module such that dust collected in the dust box is pressed to have a deceased volume.

Abstract: A vacuum cleaner nozzle assembly having an inlet opening, a height adjustment mechanism configured to adjust a vertical position of the inlet opening relative to a surface to be cleaned, a suction passage fluidly connected to the inlet opening, a bypass opening fluidly connected to the suction passage, and a bleed valve. The bleed valve has a closed position in which the bleed valve blocks the bypass opening, and an open position in which the bleed valve does not block the bypass opening to allow a flow of air through the bypass opening and into the suction passage. The bleed valve is configured to move from the closed position to the open position in response to an adjustment of the height adjustment mechanism.

Abstract: A cleaner body forms an outer appearance of a robot cleaner. A suction module provided in the cleaner body, and configured to suck dust on a surface to be cleaned. A first guiding member and a second guiding member communicate with the suction module, and spaced apart from each other, and a cyclone unit is configured to separate dust from air sucked through the first and second guiding members, using a centrifugal force. A fan module is connected to the cyclone module, and includes a motor module, and a first fan module and a second fan module connected to two sides of the motor module and configured to generate a suction force. A noise reducing cover is provided over an upper side of the fan module so as to reduce noise, and extends toward two sides of the motor module to cover the first and second fan modules.

Abstract: A cleaning appliance of the cylinder type comprises a separating apparatus for separating dirt from a dirt-bearing fluid flow, and a floor-engaging rolling assembly. The separating apparatus comprises a first cyclonic separation unit having a low efficiency cyclone and a second cyclonic separation unit having a plurality of second cyclones. The rolling assembly comprises a main body and a pair of floor-engaging wheels. The main body comprises a recess in which the separating apparatus is received such that when the cleaning appliance is viewed from either side at least one fifth of the width of the low efficiency cyclone is hidden from view by a portion of the rolling assembly at the point of maximum depth of the recess.

Abstract: A motor, a reservoir, a recovery basket, an internal hose, an external hose, a power switch, baffle with injection nozzles and floats, a sanding head, an extended sanding head, and a corner sanding head comprises a hydro-filtration unit with a sanding heads for drywall work. The sanding heads may be used to sand drywall and simultaneously draw the dust out of the air as it is created through the sanding process. The hydro-filtration prevents dust from being released into the air. Within the reservoir, the internal hose connects at one end to the motor and at the other to the floating dust injector unit and the injection nozzles. The external hose connects the sanding heads to the motor.

Abstract: An autonomous vacuum cleaner comprising a main body having a dirty air inlet, a clean air outlet, an airflow path between the dirty air inlet and the clean air outlet and a primary separating apparatus arranged in the air flow path between the dirty air inlet and the clean air outlet. The primary separating apparatus comprises at least one cyclone, and the main body further includes a secondary separating apparatus in the airflow path downstream of the primary separating apparatus. The secondary separating apparatus comprises a container for holding dirt and debris which has an air inlet and a filter element, wherein the container is arranged in the air flow such that air flows into the container through the air inlet and out of the container through the filter element. The secondary separating apparatus is removable.

Abstract: The present invention relates to a vacuum cleaner, comprising a carrier part, a liquid container, and a suction head. A bracket is pivotably fastened to the liquid container, so that the bracket can be used as a positioning element for the suction head. The suction head can be fixed in a parking position that is tilted by an angle (?) greater than 0° from the top edge of the container, in that the suction head lies on the bracket. The bracket is latched to the container in the parking position.

Abstract: An adapter box which makes possible a direct connect 110 volt central vacuum system hose to be plugged into a portable vacuum cleaner in the same way that a 110 volt direct connect central vacuum system hose would plug into an in home central vacuum system using direct connect central vacuum system inlets. An adapter box that attaches to the inlet vacuum port of a portable vacuum cleaner (household, commercial, or other) for the purpose of making compatible and possible the plugging in of a direct connect central vacuum system hose in the same way the same hose would be plugged into the direct connect central vacuum system inlet valve of an in house central vacuum system. This type hose allows 110 volts to be available for the operation of a 110 volt powered rug cleaning attachment.

Abstract: A vacuum cleaner (1) comprises an inlet (13), an outlet, a fan (14) for creating a flow of air through the vacuum cleaner (1) by drawing air to be cleaned through the inlet (13) into the vacuum cleaner (1) and by exhausting air through the outlet outwardly of the vacuum cleaner (1) and a separator (15, 41). The separator (15, 41) is rotatably arranged around an rotation axis (21), for creating, during use, a column of rotating air to separate at least a portion of the airborne particles (10) from the flow of air. The separator (15, 41) includes a number of vanes (25, 44) for the creation of the column of rotating air, wherein each vane (25, 44) is provided with a leading face (26) and a trailing face (27). The leading faces (26) of the vanes (25, 44) are inclined with respect to the rotation axis (21) for conveying the airborne particles (10) at least in an axial direction.

Abstract: A vacuum cleaner with a cyclone module assembly comprises a cyclone separation chamber for separating dust and debris from air and a collection chamber for collecting dust and debris that is separated from the air in the cyclone separation chamber. The cyclone module assembly further includes at least one feature for directing contaminants downwardly, such as a helical step dividing the separation chamber from the collection chamber or a circumferential fin that extends from the inside wall of the collection chamber.

Abstract: A method for handling water and oil automatically monitors and schedules the trucking of waste water between a disposal site and multiple well sites. In some examples, the method automatically detects the presence of a tanker truck at a well site and/or at the disposal site and records the truck's arrival and departure times. In some examples, the method monitors the changing level of waste fluid collected in a waste fluid storage tank at the well site and thereby determines the volume of waste fluid transferred from the tank to the truck. In some examples, the method also estimates the volume of waste fluid transferred from the well bore into the tank while the truck is withdrawing fluid from the tank. In some examples, the method automatically generates and posts online billing information and regulatory reports associated with waste water trucking, waste water disposal and oil reclaiming.

Abstract: A robot cleaner includes a cleaner body for forming appearance of the robot cleaner, a driving unit mounted to the cleaner body and configured to generate a suction force, a suction unit provided at the cleaner body and configured to suck dust-contained air by the driving unit, a first guiding member and a second guiding member communicated with the suction unit, respectively, and spaced from each other, and a cyclone unit configured to filter dust from air sucked through the suction unit using a centrifugal force. The cyclone unit has a first suction opening and a second suction opening communicated with the first guiding member and the second guiding member, respectively. The cyclone unit further has a first cyclone and a second cyclone configured to pass dust-filtered air therethrough.

Abstract: A compact, self-contained servicing apparatus for onboard lavatories on private aircraft and other vehicles comprises a reservoir container with a lid coupled to a flexible hose bearing a standard lavatory clean-out coupling on its opposite end. The coupling mates with a clean-out port beneath the lavatory of the vehicle. The hose permits contents of the onboard lavatory to flow under gravity into the container. The device includes a rinse bucket for pouring rinse water through the lavatory and for refilling the lavatory with disinfect and fluid. The device also optionally contains gloves, goggles, towels and other supplies used in the self-service process, and a second lid seals the container for transporting lavatory effluent to a disposal area. In one embodiment, the components of the apparatus nest within the container to form a service kit that stores onboard the vehicle when it is not in use.

Abstract: A cyclonic separator having an outer wall and an inner wall, and a shroud disposed between the outer wall and the inner wall, the inner wall having one or more outwardly projecting members, the shroud having upper and lower portions, and a mesh secured between the upper and lower portions, the lower portion having a flange that extends radially inward towards the inner wall, wherein the flange has one or more flexible portions, and the outwardly projecting members abut the flexible portions so as to bias the lower portion away from the upper portion to thus tension the mesh.

Abstract: A surface treating appliance includes a first cyclonic separating unit including at least one first cyclone, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel. The plurality of second cyclones is divided into at least a first set of second cyclones arranged about an axis, and a second set of second cyclones, the first set of second cyclones extending about the second set of second cyclones. Each second cyclone has a longitudinal axis, with the longitudinal axes of the first set of second cyclones being arranged at a first angle to said axis, and the longitudinal axes of the second set of second cyclones being arranged at a second angle to said axis, and wherein the first angle is greater than the second angle.

Abstract: A vacuum cleaner comprising a cyclonic separating apparatus including a dirty air inlet, a main body connected to the cyclonic separating apparatus and a motor and fan unit for generating an airflow through the cyclonic separating apparatus from the dirty air inlet to a clean air outlet, wherein the cyclonic separating apparatus includes at least a first cyclonic cleaning stage and an elongate filter arranged fluidly downstream from the first cyclonic cleaning stage, the elongate filter being housed in a duct at least partially surrounded by the first cleaning stage, and wherein the filter comprises an inlet portion and a filter portion defining a generally tubular filter chamber, the inlet portion including one or more radially facing inlets to permit air to flow into the inlet portion in a radial direction from where the air flows from the inlet portion to the filter chamber in an axial direction.

Abstract: A surface treating appliance includes a first cyclonic separating unit including a plurality of first cyclones arranged in parallel about an axis, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel. The plurality of second cyclones is divided into at least a first set of second cyclones arranged about the axis and a second set of second cyclones. Each of the first cyclones and the second cyclones has a longitudinal axis. The longitudinal axes of the first cyclones are arranged at a first orientation to said axis, the longitudinal axes of the first set of second cyclones are arranged at said first orientation to said axis, and the longitudinal axes of the second set of second cyclones are arranged at a second orientation, different from the first orientation, to said axis.

Abstract: A vacuum cleaning appliance includes a filter housing having at least one air inlet for receiving an air flow, a filter assembly removably locatable within the filter housing for removing dirt from the air flow, and a duct for receiving the air flow exhausted from the filter assembly. The filter assembly includes a filter body, a filter mounted on the filter body, and a spring-loaded coupling member moveable relative to the filter body for engaging the duct. The coupling member includes an air outlet through which the air flow is exhausted from the filter assembly. A convoluted sealing member forms a seal between the filter body and the coupling member while allowing relative movement therebetween as the coupling member engages the duct.

Abstract: A cyclonic portable vacuum cleaner/dust collector has a cyclonic chamber and a filter chamber. The filter chamber contains a filter cartridge with a hollow core positioned over the discharge opening of a motor plate that closes the filter chamber. A vacuum blower is mounted on the motor plate, with an intake tube at the discharge opening of the motor plate. An annular pulse-cleaning plate is positioned over an associated annular opening that surrounds the motor plate discharge opening and has an open center that slides up and down on the intake tube of the vacuum blower. A bail handle or lever extends from the pulse-cleaning plate to a handle portion outside the cover or shroud. The handle is pushed down to lift the pulsing plate to provide a reverse pressure air pulse to the filter to blast off accumulated dust. An anti-deflagration screen may be present at the center of the motor plate.

Abstract: A vacuum cleaner is provided, and in particular, a vacuum cleaner having a dust container that holds dust, and a dust separator that separates the dust from air. The vacuum cleaner may, include a body including a fan mounting portion configured to receive a fan mounted thereto, a dust separator provided to one side of the fan mounting portion that draws in air by a suction force of the fan to separate dust from the air by a cyclone principle, and a dust container provided to or at an outside of the dust separator and separable from the dust separator, that holds the dust separated at the dust separator.

Abstract: A cleaning appliance of the canister type includes separating apparatus for separating dirt from a dirt-bearing fluid flow, a floor engaging rolling assembly comprising a system for drawing the fluid flow through the separating apparatus, a chassis connected to the rolling assembly and including at least one floor engaging support member, and a duct for conveying the fluid flow to the separating apparatus. At least part of the duct is connected to the chassis for pivoting movement relative to the chassis. A biasing arrangement is provided for engaging the duct to urge the pivoting part of the duct towards a rest position relative to the chassis.

Abstract: A surface treating appliance includes first, second and third cyclonic separating units. The first cyclonic separating unit includes a perforated shroud having a lower wall and a side wall, and a first dust collector extending beneath the lower wall of the shroud. The second cyclonic separating unit includes a plurality of second cyclones arranged in parallel, and a second dust collector located beneath the dust outlets of the second cyclones and having an upper extremity lying 10 mm beneath the lowest of the dust outlets. The third cyclonic separating unit includes a plurality of third cyclones arranged in parallel, and a third dust collector located beneath the dust outlets of the third cyclones and having an upper extremity lying 10 mm beneath the lowest of the dust outlets. The volume of the second dust collector is greater than the volume of each of the first and third dust collectors.

Abstract: A surface treating appliance includes a first cyclonic separating unit including at least one first cyclone, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel. The plurality of second cyclones is divided into at least a first set of second cyclones arranged about an axis, a second set of second cyclones arranged about the axis, and a third set of second cyclones, the first set of second cyclones extending about the second set of second cyclones, and the second set of second cyclones extending about the third set of second cyclones. Each second cyclone has a longitudinal axis, with the respective longitudinal axes of each of the first, second and third set of second cyclones being arranged at different angles to said axis.

Abstract: Highly efficient particulate collectors, such as for dust and street debris collected by a mobile street cleaning vehicle, with very low pressure loss are disclosed. One embodiment uses a specially contoured passage to separate the solid particles from particulate-laden gas stream by rapid directional change at a throat region. By using the Venturi effect at the accelerating zone communicating with a gas return channel from the particulate retaining chamber, a small amount of the gas will be recirculated from the deposit zone to help move and retain the separated particles in a confined collection receptacle.