Abstract: The multi-cyclone dust separating apparatus includes a first cyclone unit including a first outer tub with a first air inlet and a cylindrical element with a first air outlet, and whirling air from the first air inlet to separate dust therefrom, the cylindrical element being disposed in the first outer tub to form a first cyclone chamber, along with the first outer tub; a second cyclone unit including a plurality of cyclones, each having a second air inlet for drawing in dust-laden air from the first cyclone chamber, to provide a second dust separation; and a dust bin including a first dust collecting chamber for collecting the dust separated by the first cyclone unit and a plurality of second dust collecting chambers for collecting the dust separated by the second cyclone unit.

Abstract: A vacuum cleaner with a cyclone module assembly comprising a separation chamber for separating dust and debris from air, a dirt collection chamber for collecting dust and debris that is separated from the air in the cyclone separation chamber, wherein the separation chamber further includes an exhaust grill that is removable for cleaning.

Abstract: A high-pressure separator with improved efficiency is provided. The separator comprises a centrifugal separator located inside of a gravity separator. The centrifugal separator has an enclosed upper portion and desirably comprises a single cylinder. The high-pressure separator is particularly suitable for use in the production of low-density polyethylene under high pressure.

Abstract: A surface cleaning apparatus comprises a dirt inlet, a handle, a cyclonic cleaning unit comprising a plurality of cyclones and at least one dirt collection chamber, each of the plurality of cyclones having an outer wall, an interior, a fluid inlet downstream from the dirt inlet and a fluid outlet, the at least one dirt collection chamber having an outer wall and an interior, wherein the surface cleaning apparatus is constructed such that the interior of the at least one dirt collection chamber is visible from a position exterior to the surface cleaning apparatus and a fluid flow motor. The surface cleaning apparatus may have a filter with a housing that is at least partially transparent.

Abstract: The invention relates to a filter apparatus for depositing impurities from a fluid stream by means of use of a filter element (10) which is accommodated in a filter casing (12). By virtue of the filter casing (12), according to the characterizing part of claim 1, having a swirl space (14) such that the fluid stream to be filtered is conducted at least partly in a swirling flow around the filter element (10), the properties of a cyclone are utilized for the actual filtration operation to the extent that the swirl space of the filter casing brings about multiple deflection of the direction of motion of the fluid to be filtered.

Abstract: Apparatuses and methods are provided for removing dust particles from air circulating within a mowing machine, such as a lawn mowing machine, including a housing, a handle attached to the housing, a prime mover attached to the housing, and a grassbag employing a cyclonic separator. A grassbag apparatus can be provided that can include a grass clippings chamber for collecting blades of grass that have been cut and a dust collection chamber for removing and collecting dust-filled air from the air circulating within the lawn mowing machine. The dust collection chamber can include a cyclonic separator and a dust collection receptacle, wherein the cyclonic separator can be configured to remove dust particles from air circulating within the grassbag apparatus.

Abstract: A removable dust collecting receptacle for use in a dust compartment of a vacuum cleaner, comprising a dust separator, which functions according to the centrifugal force principle and which has a dust collecting compartment for collecting a dust fraction separated out of the air by the dust separator. The suction power of the vacuum cleaner is maintained over a long period of time by virtue of the fact that the dust collecting receptacle has at least one second dust collecting compartment for collecting at least one second dust fraction separated out by a separating device. The fine dust collected in the second dust collecting compartment via the separating device can no longer reach the filter, and the filter surface is prevented or largely prevented from being clogged by fine dust.

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

Abstract: A separating apparatus includes a shroud that has a wall having a multiplicity of through-holes. At least one baffle is provided on the inner surface of the wall of the shroud. The baffle directs the airflow entering the shroud towards the central region of the shroud, thereby reducing conflicting air currents. The baffle may also be used to assist correct assembly of the separating apparatus. The baffle may be arranged to locate with a member provided on another component of the separating apparatus, such as a cyclone assembly, in order to locate that assembly in a predetermined orientation.

Abstract: A surface cleaning apparatus having an outer surface and comprises a dirt inlet, a handle, a cyclone separator having a cyclone separator interior and an outer wall having an inner surface, the cyclone separator comprising a cyclone chamber and a dirt collection chamber, the dirt collection chamber and the cyclone chamber each having an outer wall, the surface cleaning apparatus is constructed such that the cyclone separator interior is visible from a position exterior to the surface cleaning apparatus, an illumination member positioned to provide illumination to at least a portion of the cyclone separator interior, and a fluid flow motor.

Abstract: A cyclone dust-separating apparatus includes a cyclone unit having air inflow and air outflow parts that separate dust or dirt from air, the cyclone unit being installed such that a longitudinal axis thereof is substantially horizontally arranged; a dust bin joined to a bottom end of the cyclone unit that collects the dust or dirt separated by the cyclone unit, the dust bin installed in such a manner that a longitudinal axis thereof is substantially perpendicular to the longitudinal axis of the cyclone unit; a nonporous envelope detachably disposed in the dust bin that stores the dust or dirt collected into the dust bin; and a pressure difference-generating passage to communicate an outlet of the air outflow part and the dust bin with each other so as to allow the nonporous envelope to come in contact with an inner surface of the dust bin by a pressure difference between the dust bin and the air outflow part.

Abstract: A vacuum cleaner with cyclonic dirt separation and a bottom discharge dirt cup beneath the cyclone separator and a filter beneath the dirt cup and between the dirt cup and a suction motor inlet. A separator plate separates the cyclone separator from the dirt cup. Fins project from a sidewall of the dirt cup, and fingers projecting from a bottom wall of the dirt cup. A hollow standpipe in the dirt cup transports working air from the cyclone separator outlet to the filter.

Abstract: A liquid refrigerant drainage mechanism is described for use in a flooded evaporator to mitigate liquid carryover. The drainage mechanism can trap liquid refrigerant droplets, create a liquid column to overcome a pressure difference across the mechanism and drain liquid back to the pool in the evaporator. The drainage mechanism is disposed in a suction baffle, and has a mesh pad and a tapered pipe secured to the bottom of the baffle. The pipe has a drainage aperture at one end to allow the accumulated liquid refrigerant to return to the refrigerant pool below. The mesh pad helps to separate liquid droplets that coalesce and fall into the tapered pipe. By using this liquid drainage mechanism in conjunction with a suction baffle, liquid carryover can be reduced and chiller performance improved.

Abstract: A cyclone dust collecting apparatus for a vacuum cleaner according to the present disclosure includes a cover having a suction port forcing entering air to form a whirling air current; a cyclone body connected to the cover, the cyclone body having a discharging pipe discharging the entered air; a grill disposed at the discharging pipe; and a grill cleaning unit movably disposed at the discharging pipe so as to remove dust attached to the grill.

Abstract: Ventilation Air Methane (VAM) exhaust gases from coal pre-mine gob wells, land fills and oil refinery (Installations) vent stacks are used, after adequate compression, for energizing a high-speed gas turbine. The convoluting gas discharge causes a first separation stage by stratifying of heavier non-combustible and lighter combustible gas components that exit from the turbine in opposite directions, the heavier components having a second stratifying separation in a vortex tube to separate non-combustible, heaviest pollutants from non-combustible medium-heavy components. The noncombustible, medium components exit a vortex tube open end to atmosphere. The lighter combustible, pollutants (high purity Methane) effected in the first separation are piped to the Installation's engine air intake for re-combustion, thereby reducing the Installation's Methane pollution and improving its fuel economy. The non-combustible, heaviest pollutants from the second separation stage are piped to air filter assemblies.

Abstract: A vacuum cleaner cyclone separator having a cyclone chamber with an air inlet and an air outlet. The cyclone chamber directs an airflow into a cyclonic pattern to remove a first amount of debris from the airflow. A filter shroud is located within the cyclone chamber and separates the air inlet from the air outlet. The filter shroud includes an air-pervious filter surface adapted to allow the airflow to pass from the air inlet to the air outlet and remove a second amount of debris from the airflow. One or more protrusions are associated with the filter surface, and configured and dimensioned to direct at least a portion of the airflow passing generally parallel to the filter surface away from the filter surface before passing through the filter surface. A dirt collection assembly having a cyclone separator and a method for using a cyclone separator are also disclosed.

Abstract: A cyclone dust-collecting apparatus to separate dust from air drawn in through a suction port body of a vacuum cleaner using a centrifugal force and to collect the separated dust is provided. The cyclone dust-collecting apparatus includes a primary cyclone unit to separate dust from air drawn in through the suction port body; a secondary cyclone unit disposed inside the primary cyclone unit to separate dust from air discharged from the primary cyclone unit; and a tertiary cyclone unit disposed above the primary cyclone unit at an angle different from the primary and secondary cyclone units.

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 dust collecting apparatus which is removably connected to a cleaner body is provided. The apparatus includes a cyclone body which forms a cyclone chamber and is in fluid communication with an air inlet passage on one side thereof; an exit pipe which is protruded from a bottom of the cyclone body to an upper side of the cyclone chamber; and a dust canister body which forms a dust collection chamber between the cyclone body and the dust canister body. The cyclone body is arranged eccentrically within the dust collection chamber so that a portion of the cyclone body has a common portion in contact with a portion of the dust canister body. The common portion is made of transparent materials to see through the cyclone chamber.

Abstract: An air precleaner arrangement for an internal combustion engine comprises a screen, a shroud, a fan, a first cyclone filter and a second cyclone filter. The screen has air permeable openings sized to retain debris. A fan is cooperating with the screen to provide an air stream from an upstream surface through the openings of the screen to a downstream surface. The shroud encloses the fan and the screen. The first cyclone filter has an air inlet receiving air on the downstream surface of the screen, an air outlet and a scavenge port in communication with interior of the screen and thus with the air stream of the fan. The second cyclone filter has an air inlet connected to the air outlet of the first cyclone filter, an air outlet connected to the air inlet of the internal combustion engine and a scavenge port connected to an exhaust venturi in the exhaust stream of the engine.

Abstract: The present disclosure relates to a cyclone dust collecting apparatus for a vacuum cleaner having a high fine dust collecting efficiency. The cyclone dust collecting apparatus includes a first cyclone having an air suction hole through which dust-laden air is drawn-in, the first cyclone forcing the dust-laden air to downwardly whirl in a space under the air suction hole so as to centrifugally separate dust from the dust-laden air; a second cyclone disposed inside the first cyclone, the second cyclone forcing semi-clean air entering from the first cyclone to downwardly whirl so as to centrifugally separate fine dust from the semi-clean air; and an air guiding member forcing the semi-clean air discharged from the first cyclone to directly enter the second cyclone and, the air guiding member having a plurality of guiding blades radially disposed in at least one circular shape based on a vertical axis of the second cyclone.

Abstract: Disclosed is a dust collector of a vacuum cleaner. The dust collector comprises: a cyclone body forming a cyclone chamber and having a bottom wall and an air inlet, air being admitted into the cyclone chamber and rotating in the cyclone chamber; an outlet pipe extending upwardly from the bottom wall of the cyclone body; and a dust-bin body surrounding the cyclone body in such a manner that a dust collection space is formed between the dust-bin body and the cyclone body. The inner diameter of the cyclone body is increased as approaching a height near the top end of the outlet pipe from the bottom wall of the cyclone body.

Abstract: A separation assembly for separating dirt and dust from air in a vacuum cleaner, through which assembly an air flow path extends from an inlet to an outlet. The air flow path extends through an upstream separator and a downstream separator. The downstream separator includes an air-permeable filter element bounding an inner space. The wall sections bounding the air flow path in the area of the downstream separator include at least a transparent section through which the filter element is visible. The inner space is located upstream of an area outside the filter element for filtering air flowing from inside the filter element to outside the filter element.

Abstract: A filter system for a surface maintenance machine having a hopper assembly for receiving brush-thrown debris including a cyclonic separator for separating dust and debris from air drawn through the hopper via vacuum action. The cyclonic separator may include multiple cyclone and may be in fluid communication with the hopper assembly so as to periodically receive dust and debris exiting the filter system.

Abstract: A filter element, a safety element and fluid cleaner assembly. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The element generally comprises z-filter media, arranged in a straight through configuration, and an axial seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Methods of assembly and use are provided.

Abstract: A dust collection unit for a vacuum cleaner includes a first filtering chamber filtering foreign objects using a cyclone airflow, a separation plate defining a top surface of the first filtering chamber, a filter having a diameter that is reduced as it goes downward in response to airflow rate variation in the first filtering chamber, and a blocking member provided under the filter to prevent the foreign objects filtered in the first filtering chamber from flying.

Abstract: A vacuum cleaner, in which a dust bag or a cyclone dust collecting apparatus can be selectively mounted, includes a body case having a dust collecting chamber and a connecting hole formed at a side surface of the dust collecting chamber so that outside air enters through the connecting hole, a pair of securing brackets formed on an inner surface of the dust collecting chamber of the body case at both sides of the connecting hole in parallel with each other so that the cyclone dust collecting apparatus or the dust bag is selectively secured to the pair of securing brackets, and a body cover disposed at the body case and being opened and closed in order to open and close the dust collecting chamber.

Abstract: A dust collecting device of a vacuum cleaner includes a first cyclone unit comprising a first cyclone chamber where the air enters through a first inlet and spins, and a first dust collecting chamber where dust separated from the air is collected; and a second cyclone unit comprising a second cyclone chamber where the air, discharged from the first cyclone unit, enters through a second inlet and spins, and one or more dust collecting parts formed on a circumference of a second cyclone body to separate minute dust from the air upon contacting with the air spinning within the second cyclone chamber. Accordingly, efficiency in collecting minute dust by the dust collecting device increases.

Abstract: A shop vacuum cleaner has a series of dust separation stages, with the large majority of the dust being preseparated in a cyclonic separator and deposited into a first drum or barrel. The remaining dust that is carried in the air stream is filtered out in a pre-filter in a second vacuum cleaner drum. A final filter cartridge is fitted onto the intake of the vacuum head. The vacuum cleaner machine exhausts clean, filtered air into the ambient.

Abstract: An air cleaner device for filtering intake air including a housing defining a chamber, a filter element disposed within the chamber, and a duct element having a passageway in fluid communication with the chamber. Further, the duct element extends along-and downwardly from about a portion of the housing and further includes an inlet for drawing intake air into the chamber. The air cleaner having a base member in fluid communication with the chamber and an outlet, where the air drawn into the chamber is filtered by first and second filtering operations to obtain filtered air, with the first and the second filtering operations accomplished at least in part due to a cyclonic motion of the air and passage of the air through the filter element, respectively; and where the filtered air from the chamber of the housing is released through the outlet in the base member.

Abstract: The present invention relates to an upright vacuum cleaner including a housing and a nozzle base having a main suction opening. The housing is pivotally mounted on the nozzle base. The housing comprises a cyclonic separator including a dirty air inlet and a sidewall. A lower end of the separator being secured to a lower skirt. A dust collector section is located beneath the separator and includes a sidewall. A perforated tube is disposed within the separator. The perforated tube includes a shroud extending away from a closed lower end of the perforated tube. A diameter of the shroud is larger than a diameter of the separator lower end. The lower skirt and the shroud define a first air channel for directing air from the separator into the dust collector section. The first air channel has a substantially constant volume for maintaining airflow velocity.

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 a multiplicity of through-holes forming an outlet from the chamber, each of the through-holes having substantially rectangular cross-sections with width to height ratios in the range of 1.5:1 to 1:1.5. The rectangular cross section of the through-holes maximizes the available through-hole area in the shroud, produces a low pressure drop across the shroud and reduces the amount of material required for manufacture. Further, this ratio allows the cross-sectional area of the through-holes to be dimensioned to prevent larger particles of dirt and dust from passing through the through-holes in the shroud, while still providing the required structural integrity.

Abstract: A bagless vacuum cleaner system dustcup assembly and method for using said system with a vacuum cleaner apparatus to separate dirt from a mixture of dirt and air inducted into said vacuum cleaner apparatus. Said bagless vacuum cleaner system generally comprises a dustcup assembly, a handle assembly and a motor intake adaptor.

Abstract: A separating apparatus includes a separating chamber in which cyclonic separation is able to take place, an inlet to the separating chamber and a shroud that includes a wall having a multiplicity of through-holes forming an outlet from the separating chamber and also includes a lip extending from the wall into the separating chamber, the lip having has a plurality of apertures therethrough. The provision of apertures in the depending lip allows the airflow to be drawn through the apertures while it is still in the separating chamber. This has the effect of capturing some of the dirt and dust which remains entrained within the airflow so that it collects on the upstream side of the lip. Thus the shroud through-holes are presented with less entrained dirt and dust and the risk of the through-holes becoming blocked is reduced.

Abstract: A filter assembly and a cyclone dust collecting apparatus using the same are provided. The filter assembly is employed by a cyclone dust collecting apparatus which centrifugally separates contaminant from drawn-in air to remove the contaminant and filters and discharges the air and has a filter part, and an air path. The air path is formed in the filter part to guide the air into the filter part and enables the air to flow in a three-dimensional direction, in other words, in a perpendicular direction to a central axis of the filter part, simultaneously flow in a parallel direction with the central axis of the filter part.

Abstract: A filter arrangement includes a filter element, a frame construction secured to the filter element, and a handle member secured to the filter element. In preferred embodiments, the handle member is secured to the frame construction. Preferably, the filter element includes a central core member, wherein fluted filter media is coiled around the central core member. Preferably, the central core member includes a plurality of corrugations, wherein the corrugations mateably engage at least some flutes. Preferably, the handle member is integral with the central core member, and also includes a fastening member for connection to a frame construction on the filter element. Methods for cleaning air and servicing an air cleaner preferably include constructions as described herein.

Abstract: A cyclonic separator for separating particles and/or liquids from an airflow using means for causing the air to follow a cyclonic flow pattern through the separating chamber (12; 112; 212) and around an axis (17; 117) for causing cyclonic separation of a least a portion of the particles and/or liquids from the airflow within the separating chamber (12; 112; 212). An interior surface portion of a drum (18; 118; 218) bounding the separating chamber (12; 112; 212) and extending circumferentially around the axis (17; 117) is rotatable about the axis (17; 117) so that separation of particles and/or liquid from the airflow is improved. A vacuum cleaner including such a separator is also described.

Abstract: A central vacuum unit comprises a cyclonic chamber having a sidewall. A motor causes a swirl of air loaded with debris to centrifugally contact an inner surface of the sidewall of the cyclonic chamber. A lateral outlet is defined through the sidewall to provide for lateral discharge of the debris from the cyclonic chamber.

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 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: A dust collecting apparatus for a vacuum cleaner including a cyclone body provided with a cyclone chamber and a contaminant collecting chamber formed therein, a cyclone case provided in the cyclone body having the cyclone chamber and the contaminant collecting chamber separated from each other; an air inflow tube penetrating an outer wall of the cyclone body such that a suction passage at an outside of the cyclone body is fluidly communicated with a lower end of the cyclone chamber; and an air outlet tube penetrating sequentially a bottom of the cyclone case and a bottom the cyclone body to guide the air discharged from the cyclone chamber to a discharge passage placed at an outside of the cyclone body, wherein the contaminant collecting chamber is connected to the cyclone chamber through a contaminant discharge port formed at a side surface of upper end of the cyclone chamber.

Abstract: The present invention provides a device for removing particulate matter from an air stream, and more particularly the present invention relates to a rotary gas cyclone separator with a dual-ducted filtering vortex finder for separating fine particles as small as 1 ?m from an air stream.

Abstract: A gas/liquid separator comprising a vertical vessel having an inlet for a gas/liquid mixture; a gas/liquid separation device arranged within the vessel, which separation device has an inlet in fluid communication with the inlet of the vessel, and an outlet means for at least partially separated gas and liquid; an outlet for gas from the vessel, above and in fluid communication with the outlet means of the separation device; a liquid collection space in the vessel, below and in fluid communication with the outlet means of the separation device; and an outlet for liquid from the vessel, having a receiving end in the liquid collection space, wherein the gas/liquid separation device is a vane inlet device and wherein between the separation device and the liquid collection space a liquid collection promoter tray is arranged, forming a receiving area for liquid impinging on the tray from above and having a passage for liquid received on the receiving area to flow to the liquid collection space; and the use of such

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: Ventilation Air Methane (VAM) exhaust gases from coal pre-mine gob wells, landfills and oil refinery (Installations) vent stacks are used, after adequate compression, for energizing a high-speed gas turbine. The convoluting gas discharge cause a first separation stage by stratifying of heavier non-combustible and lighter combustible gas components that exit from the turbine in opposite directions; the heavier components having a second stratifying separation in a vortex tube to separate non-combustible, heaviest pollutants from non-combustible medium heavy components. The non-combustible, medium components exit a vortex tube open end to atmosphere. The lighter combustible Methane gas effected in the first separation is piped to the Installation's engine for combustion, thereby reducing its Methane pollution and improving its fuel economy.

Abstract: A vacuum cleaner of the present invention guides air and dust sucked from an inlet 12 to a dust collection chamber 29 through a guide path 41. A cylindrical passage member 55 is located at a linear section of the guide pipe 41 so that its axial line may come along a direction in which the linear section 52 extends. A plurality of vent holes 47 are formed on the passage member 55 and each of the vent holes 47 is covered with a mesh filter 50. When dust is accumulated in the dust collection chamber 29 to some extent, air flowing into a lead-in pipe 43 flows to the outside (the side of a bypass passage 31) through the vent holes 47 and is guided directly to an outlet by bypassing the dust collection chamber 29.

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 filter apparatus and a vacuum cleaner incorporating the filter apparatus are disclosed. The filter apparatus has a first, fine filter assembly and a second, coarse filter assembly. The fine filter assembly includes a body defining a central aperture in which a pleated fine filter element is arranged. The periphery of aperture is surrounded by a resilient rubber sealing member. Apertures are arranged around the body portion radially outwards of the aperture and sealing member for mounting the fine filter assembly to pins on housing of the vacuum cleaner. The body is also provided with radially inwardly facing slots for engaging corresponding projections on a coarse filter assembly for removably mounting the coarse filter assembly to the fine filter assembly. The removable coarse filter assembly gives the user a choice between two stage filtration (i.e. using the fine and course filter assemblies) or single stage filtration (i.e. using the fine filter assembly only).

Abstract: A cyclone dust-collecting apparatus to separate dust from air drawn in through a suction port body of a vacuum cleaner using a centrifugal force and to collect the separated dust is provided. The cyclone dust-collecting apparatus includes a primary cyclone unit to separate dust from air drawn in through the suction port body; a secondary cyclone unit disposed inside the primary cyclone unit to separate dust from air discharged from the primary cyclone unit; and a tertiary cyclone unit disposed above the primary cyclone unit at an angle different from the primary and secondary cyclone units.

Abstract: It is provided in the present invention with a pervasive dedusting device for a vacuum cleaner, which includes a tank with a wind inlet and a wind outlet. A filter barrel is mounted inside the tank while a cyclone barrel is mounted inside the filter barrel. The cyclone barrel is configured to be a conical barrel with a smaller upper end and a larger lower end and a cyclone wind inlet is disposed on it. The wind inlet on the tank and the cyclone wind inlet on the cyclone barrel are separated by the filter barrel and located in two chambers respectively. A wind outlet tube is located in the upper end of the cyclone barrel and communicates with the wind outlet. The pervasive dedusting device has low air flow pressure loss, improved dust suction effect, fine dust filtering function, decreased operation noise, and it can effectively prevents secondary pollution and filter out fine dust completely.