EP0815788A2 - Elektrozyklonstaubsauger und Filterpatrone dafür - Google Patents

Elektrozyklonstaubsauger und Filterpatrone dafür Download PDF

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Publication number
EP0815788A2
EP0815788A2 EP96203067A EP96203067A EP0815788A2 EP 0815788 A2 EP0815788 A2 EP 0815788A2 EP 96203067 A EP96203067 A EP 96203067A EP 96203067 A EP96203067 A EP 96203067A EP 0815788 A2 EP0815788 A2 EP 0815788A2
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
pipe
chamber
cleaner according
tub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96203067A
Other languages
English (en)
French (fr)
Other versions
EP0815788A3 (de
Inventor
Lorella Annovazzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Candy SpA
Original Assignee
Candy SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Candy SpA filed Critical Candy SpA
Publication of EP0815788A2 publication Critical patent/EP0815788A2/de
Publication of EP0815788A3 publication Critical patent/EP0815788A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608—Cyclonic chamber constructions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1625—Multiple arrangement thereof for series flow
    • A47L9/1633—Concentric cyclones
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/165—Construction of inlets

Definitions

  • the present invention relates to a vacuum cleaner comprising a suction and filter system using a combined cyclonic and electrostatic action.
  • the system can be used in both industrial and domestic types of vacuum cleaners having high performance and low running costs.
  • the prior art includes domestic vacuum cleaners containing a suction motor unit which sucks air through a rigid or flexible tube ending in a generally interchangeable suction head made in a variety of shapes to suit the various needs of use.
  • a filter for trapping the dust is generally in the form of a paper or felt bag which has to be periodically replaced or emptied and cleaned - a very disagreeable job for the user.
  • vacuum cleaners Furthermore, the efficiency of these types of vacuum cleaners is low and changes over time, the problem being that a vacuum cleaner must fulfil the requirement of trapping solid particulates whose dimensions may vary from a few millimetres (granules) to a few micrometres (very fine dust) and whose densities may vary from 5 g/cm 3 to less than 1 g/cm 3 depending on the material (metal powders, inorganic materials and organic materials such as fluff etc.).
  • the speed of the sucked air stream In order to trap larger solid particulates of high density, the speed of the sucked air stream must be very high, around 30 m/s or more.
  • the porosity of the filter must be very fine, of about the same size as the particles that are to be trapped.
  • the sucked air serves as ventilation for the motor, so that a reduction in the flow can cause it to overheat and fail.
  • An alternative system which has been gaining acceptance even in domestic vacuum cleaners, and dispenses with the use of filter bags, or at least limits the use of filters in the stream of sucked air, involves introducing, in the suction circuit, one or more cyclones in sequence, which, by imparting a swirling motion to the stream of air entering the cyclone chamber, exert a centrifugal action which causes the solid particles to pack together near the walls of the chamber on which, by friction and consequent loss of speed, they are deposited and fall under gravity into the bottom of the chamber, from where they can be periodically removed.
  • this filtration system is not entirely satisfactory as smaller and lighter particles are little affected by the centrifugal forces set up by the cyclone or cyclones, even the highly efficient types (frustoconical-chamber cyclones) and they tend to a great extent, if not entirely, to escape being trapped.
  • the present invention overcomes all these limitations and provides a vacuum cleaner in which the action of filtration is performed jointly by centrifugal force and by the forces of electrostatic attraction generated by an electric charge produced by triboelectric action by the stream of dust itself carried by the sucked air, which is given a swirling motion.
  • vacuum cleaner can be described as "electrocyclonic" or as using an electrostatic cyclone.
  • the filter system of the vacuum cleaner consists of a generally cylindrical or frustoconical chamber for collecting the particulates, with an outflow mouth at the top connected to a motorized suction unit.
  • the collecting chamber houses in its interior a helical pipe, for example a circular-sectioned tube, made of a dielectric material that can be given an electric charge by triboelectric action, with an inlet mouth that opens on the outside of the chamber to receive a stream of dust-laden air fed to it by a suction mouth, and an outlet mouth that opens on the inside of the chamber approximately tangentially to the cylindrical or frusto-conical walls of the chamber, as in an ordinary cyclone.
  • a helical pipe for example a circular-sectioned tube, made of a dielectric material that can be given an electric charge by triboelectric action
  • this filter system is advantageously combined with an additional cyclone filter stage, which may optionally also be made more efficient by electrostatic action.
  • the filter system consists of a semirigid cartridge designed to replace a conventional cartridge filter in order to convert a conventional vacuum cleaner, using a filter that requires periodic replacement, into an electrocyclone vacuum cleaner that does not require filter replacement but only periodic emptying of the cyclone, without the machine having to be modified in any way.
  • an electrocyclone vacuum cleaner according to the present invention comprises a base 1 mounted on wheels 2, 3 (optionally also rotating brushes) and housing a suction unit 4.
  • a body 5 closed on one side by a removable half-cover 6 and housing in its interior, in such a way as to leave a space 17, a dust collecting container or chamber 7 closed by a removable lid 8 with a gasket 9 between the two.
  • the body 5 possesses a mouth 10 through which the sucked air enters and which is connected externally, by a flexible tube 11, to a suction head, and internally to the removable lid 8.
  • a helical tube 13 Inside the container 7, attached to the lid 8, is a helical tube 13 whose inlet connects, via a suitable gasket, with the inlet mouth 10 while its outlet 14 opens on inside of the chamber 7, at a suitable distance from the bottom 15 of the chamber 7.
  • the lid 8 contains an opening 16 placing the interior of the chamber 7 in communication with the space 17 formed between the container 7 and the body 5.
  • a net can be placed over the opening 16 for trapping particulates larger than a certain size.
  • the space 17 communicates with the suction mouth of the suction unit 4.
  • the helical tube 13 is made, preferably by blow-moulding or thermoforming, from a plastic material.
  • the suction unit When the suction unit is turned on, the air sucked in through the head 12 and conveyed to the tube 13 via the flexible tube 11 travels at high speed, approximately 30-50 m/s or even more, through the tube 13, where a swirling motion is imparted to it.
  • the particulates contained in the air thus experience a centrifugal force which throws the particles against the inner walls of the tube 13.
  • the particles exert a rubbing action on the inner walls of the tube 13, especially on that portion of the tube walls furthest from the axis of the helix, causing it to become electrically charged.
  • the experimental fact remains that the inner walls of the tube 13 remain perfectly clean and do not accumulate deposits that could obstruct and block or limit the flow of air.
  • the transporting force of the air flow therefore drops significantly and the particles of dust are brought to a stop, in the case of the largest, by friction with the inner walls of the container 7 before falling under gravity to the bottom of the container.
  • the smaller and lighter particles being less sensitive to the imparted centrifugal acceleration, are attracted electrostatically to the outer walls of the tube 13 on which they collect.
  • the air stream now rid of the solid particulates then passes out of the mouth 16 of the lid 8 into the space 17 and is sucked in by the suction unit 4 before being expelled into the surrounding environment.
  • Figure 1 the container 7, whose shape is a preferably but not necessarily circular-sectioned elongate cylinder, is depicted with its axis upright.
  • the body 6, as in many vacuum cleaners available on the market, may therefore be hinged to the base 1 to assume a variable working position dictated by user convenience and by the particular conditions of use.
  • the container 7 and its lid 8 can easily be removed from the housing formed in the body 5.
  • the operation can be facilitated by a handle 18 on the lid 8.
  • the tube 13 is withdrawn from the container and the latter can easily be emptied of its load of dust into a dustbin.
  • both the container 7 and the lid 8 with its associated tube 13 can be washed: this will not affect the properties of the material once it has been dried.
  • the container 7 together with the lid 8 and the associated tube 13 can be designed in terms of dimensions and geometry so as to be interchangeable with filter bags of rigid structure already available on the market so that they can be installed and housed in vacuum cleaners already existing on the market instead of the originally intended bag/filter.
  • Figures 2, 3, 4 and 5 show by way of example an structure for an electrocyclone filter which uses as its base a ribbed frame 19 for containing a conventional filter bag.
  • the frame is closed at the top by a ribbed head 20, removable from the frame 19 and provided with an inlet mouth 21, a gasket 22 being provided for the connection of a suction tube.
  • the frame encloses, instead of the filter, an impervious semirigid container 23, which may also be formed integrally with the frame.
  • a helical tube 25 Connected to the inlet mouth 21, via a funnel 24, is a helical tube 25 made of a plastic material, also semirigid, which extends down into the container 23.
  • Both the frame and the container are in the general form of rectangular parallelepipeds, with rounded edges.
  • the head 20, which has a handle 26, has one or more outflow openings around its sides, optionally with protective gratings to trap particulates larger than a given size.
  • the tube 25, whose diameter may be around 15-30 mm and whose thickness around 0.5-1.5 mm, follows in its shape the inner walls of the container 23 at a convenient distance from them, of for example 3-10 mm.
  • An electrocyclone filter of the type described unlike filter bags or absorbent felt filters, exhibits very little resistance to the passage of a stream of air.
  • the resistance is not influenced by the conditions of use, provided of course that the outlet of the tube 25 (Fig. 3) or 13 (Fig. 1) is not blocked by overfilling the dust collecting container.
  • the filter as thus designed is reusable indefinitely, given periodic emptying, and so saving on running costs
  • the advantage is therefore obtained that for the same filtering efficiency, or with greater filtering efficiency, when compared with ordinary filter bags, the necessary suction power is much reduced (by 15-20 % or more), so that both the electricity running costs are reduced and the power of the motor installed in a vacuum cleaner designed specifically for use with this filter is reduced, thereby substantially reducing the cost of the appliance.
  • Figure 6 shows in diagrammatic cross section an embodiment of an electrocyclone filter in which the dust collecting container 30 is in the form of an open-topped cylindrical tub provided internally with a cyclindrical partition 31 separating it into a central cylindrical volume 31A and an annular ring 31B.
  • a bell head 32 Over the tub 30 is a bell head 32 whose cylindrical walls 33 come between the peripheral walls of the tub 30 and the inner partition 31, forming a labyrinth path.
  • a helical tube 34 Accommodated inside the bell head 32 is a helical tube 34 that opens on the outside of the tub for connection to a suction head and reaches into the interior of the cylindrical partition 31.
  • the dust-laden air entering the tube 34 unloads most of its particulates into the central volume 31A.
  • a further fraction of the particulates are trapped electrostatically and are deposited on the outer walls of the tube 34.
  • the cleaned air flows over the rim of the cylindrical partition 31 into the space formed between partition 31 and peripheral walls 33 of the bell.
  • the air entering the space can have a high speed and a tangential component so that the walls 33 behave like a third cyclone (the first cyclone is that formed through the tube 34 and the second cyclone is that formed by the cylindrical partition 31).
  • the wall 33 may conveniently be in a plastic that becomes electrically charged by triboelectric action.
  • Any residual dust carried by the air therefore charges the inner surface of the peripheral walls 33 and then, travelling at reduced speed through the space between the walls 33 and the peripheral walls of the tub 30, is attracted to the outer surface of the walls 33, from which it drops into the bottom of the annular ring 31B when the electrostatic charge decays.
  • the tub is easily cleaned and emptied by removing the bell 32, and with it the tube 34, which may conveniently be made integral with the bell, from the tub.
  • Figure 7 depicts a further variant, similar in some ways to the embodiment of Figure 6.
  • the dust collecting container 35 is provided with an inner cylindrical partition 36 in which is housed a screw 37 with a hollow central core, and edges of the screw sealed in by the cylindrical partition 36 in such a way as to form a helical channel through which a stream of sucked air is conveyed.
  • the inner cylindrical partition 36 is made of a plastic material that can be given an electric charge by triboelectric action.
  • a bell 38 mounted over the cylindrical partition 36 forms a labyrinth flow path from the cavity of the core of the screw and out through the space formed between the partition 36 and the bell 38 and between the bell 38 and the peripheral walls of the tub 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Electrostatic Separation (AREA)
  • Cyclones (AREA)
EP96203067A 1996-06-27 1996-11-02 Elektrozyklonstaubsauger und Filterpatrone dafür Withdrawn EP0815788A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI961308 1996-06-27
IT96MI001308A IT1284447B1 (it) 1996-06-27 1996-06-27 Aspirapolvere a elettro-ciclone e relativa cartuccia filtro a elettro-ciclone

Publications (2)

Publication Number Publication Date
EP0815788A2 true EP0815788A2 (de) 1998-01-07
EP0815788A3 EP0815788A3 (de) 1999-02-03

Family

ID=11374490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96203067A Withdrawn EP0815788A3 (de) 1996-06-27 1996-11-02 Elektrozyklonstaubsauger und Filterpatrone dafür

Country Status (2)

Country Link
EP (1) EP0815788A3 (de)
IT (1) IT1284447B1 (de)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778546A1 (fr) * 1998-05-15 1999-11-19 Seb Sa Aspirateur a separation tangentielle des dechets
WO2000040135A1 (en) * 1999-01-08 2000-07-13 Fantom Technologies Inc. Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
WO2000041454A2 (en) * 1999-01-08 2000-07-20 G.B.D. Corporation Air flow passage for a cyclonic separator and vacuum cleaner having same
WO2000044272A1 (en) * 1999-01-29 2000-08-03 Fantom Technologies Inc. Upright vacuum cleaner
US6334234B1 (en) 1999-01-08 2002-01-01 Fantom Technologies Inc. Cleaner head for a vacuum cleaner
US6344064B1 (en) 1999-01-29 2002-02-05 Fantom Technologies Inc. Method and apparatus of particle transfer in multi-stage particle separators
AU765482B2 (en) * 2001-09-13 2003-09-18 Samsung Electronics Co., Ltd. Cyclone dust collecting apparatus for vacuum cleaner
KR20040050220A (ko) * 2002-12-09 2004-06-16 엘지전자 주식회사 싸이클론 집진장치
US6782585B1 (en) 1999-01-08 2004-08-31 Fantom Technologies Inc. Upright vacuum cleaner with cyclonic air flow
WO2004105568A1 (en) * 2003-05-30 2004-12-09 Yun-Kee Kang A dust collector, and vacuum cleaner using the same
US6863702B2 (en) 2000-01-14 2005-03-08 White Consolidated Ltd. Bagless dustcup
WO2005077242A2 (en) * 2004-02-12 2005-08-25 Arcelik Anonim Sirketi A vacuum cleaner
WO2007131858A1 (de) * 2006-05-16 2007-11-22 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger mit wenigstens einem fliehkraftabscheider
US7615089B2 (en) 2005-04-22 2009-11-10 Samsung Gwangju Electronics Co., Ltd. Filter assembly and cyclone dust collecting apparatus having the same
GB2472096A (en) * 2009-07-24 2011-01-26 Dyson Technology Ltd Separating apparatus with electrostatic filter
WO2011010137A1 (en) 2009-07-24 2011-01-27 Dyson Technology Limited An electrostatic filter
WO2011010136A1 (en) 2009-07-24 2011-01-27 Dyson Technology Limited A cyclonic separating apparatus with electrostatic filter
WO2011010135A1 (en) 2009-07-24 2011-01-27 Dyson Technology Limited A surface treating appliance with electrostatic filter
US8182563B2 (en) 2009-03-31 2012-05-22 Dyson Technology Limited Separating apparatus
US8252096B2 (en) 2006-06-08 2012-08-28 Dyson Technology Limited Cleaning and/or filtering apparatus
US10231586B2 (en) 2013-06-27 2019-03-19 Deregallera Holdings Ltd Vacuum cleaner
US10376900B2 (en) 2013-11-01 2019-08-13 Kx Technologies Llc Electrostatic removal of colloidal, soluble and insoluble materials from a fluid
JP2020506744A (ja) * 2017-02-06 2020-03-05 アクチエボラゲット エレクトロルックス 電気掃除機用の分離システム、および分離システムを備える電気掃除機
US11547259B2 (en) 2007-12-19 2023-01-10 Omachron Intellectual Property Inc. Configuration of a cyclone assembly and surface cleaning apparatus having same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018197A1 (de) 1979-04-19 1980-10-29 James Dyson Saugreinigungsgeräte
EP0042723A2 (de) 1980-06-19 1981-12-30 Rotork Appliances Limited Vakuum-Reinigungsvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018197A1 (de) 1979-04-19 1980-10-29 James Dyson Saugreinigungsgeräte
EP0042723A2 (de) 1980-06-19 1981-12-30 Rotork Appliances Limited Vakuum-Reinigungsvorrichtung

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6332239B1 (en) 1998-05-15 2001-12-25 Seb S.A. Vacuum cleaner with tangential separation of trash
WO1999059458A1 (fr) * 1998-05-15 1999-11-25 Seb S.A. Aspirateur a separation tangentielle des dechets
FR2778546A1 (fr) * 1998-05-15 1999-11-19 Seb Sa Aspirateur a separation tangentielle des dechets
US6383266B1 (en) 1999-01-08 2002-05-07 Fantom Technologies Inc. Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
US6482252B1 (en) 1999-01-08 2002-11-19 Fantom Technologies Inc. Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
WO2000041454A3 (en) * 1999-01-08 2000-11-30 Gbd Corp Air flow passage for a cyclonic separator and vacuum cleaner having same
US6238451B1 (en) 1999-01-08 2001-05-29 Fantom Technologies Inc. Vacuum cleaner
WO2000041454A2 (en) * 1999-01-08 2000-07-20 G.B.D. Corporation Air flow passage for a cyclonic separator and vacuum cleaner having same
US6334234B1 (en) 1999-01-08 2002-01-01 Fantom Technologies Inc. Cleaner head for a vacuum cleaner
US6902596B2 (en) 1999-01-08 2005-06-07 Gbd Corporation Air flow passage for a vacuum cleaner
WO2000040135A1 (en) * 1999-01-08 2000-07-13 Fantom Technologies Inc. Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
US6391095B1 (en) 1999-01-08 2002-05-21 G.B.D. Corp. Air flow passage for a cyclonic separator and vacuum cleaner having same
US6782585B1 (en) 1999-01-08 2004-08-31 Fantom Technologies Inc. Upright vacuum cleaner with cyclonic air flow
EP1297774A1 (de) * 1999-01-08 2003-04-02 G.B.D. Corporation Luftzufuhrmittel für einen Zyklonenabscheider und Staubsauger mit demselben
US7455708B2 (en) 1999-01-08 2008-11-25 G.B.D. Corporation Air flow passage for a vacuum cleaner
US6599340B2 (en) 1999-01-08 2003-07-29 G.B.D. Corp Air flow passage for a cyclonic separator and vacuum cleaner having same
US8015659B2 (en) 1999-01-08 2011-09-13 Gbd Corporation Air flow passage for a vacuum cleaner
AU2005203506B2 (en) * 1999-01-08 2010-06-17 G.B.D. Corporation Air flow passage for a cyclonic separator and vacuum cleaner having same
US6736873B2 (en) 1999-01-08 2004-05-18 G.B.D. Corporation Air flow passage for a vacuum cleaner
US6740144B2 (en) 1999-01-08 2004-05-25 Fantom Technologies Inc. Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
US6582489B2 (en) 1999-01-29 2003-06-24 Polar Light Limited Method and apparatus of particle transfer in multi-stage particle separators
WO2000044272A1 (en) * 1999-01-29 2000-08-03 Fantom Technologies Inc. Upright vacuum cleaner
US6344064B1 (en) 1999-01-29 2002-02-05 Fantom Technologies Inc. Method and apparatus of particle transfer in multi-stage particle separators
US6863702B2 (en) 2000-01-14 2005-03-08 White Consolidated Ltd. Bagless dustcup
US6623539B2 (en) 2001-09-13 2003-09-23 Samsung Gwangju Electronics Co., Ltd. Cyclone dust collecting apparatus for a vacuum cleaner
AU765482B2 (en) * 2001-09-13 2003-09-18 Samsung Electronics Co., Ltd. Cyclone dust collecting apparatus for vacuum cleaner
KR20040050220A (ko) * 2002-12-09 2004-06-16 엘지전자 주식회사 싸이클론 집진장치
WO2004105568A1 (en) * 2003-05-30 2004-12-09 Yun-Kee Kang A dust collector, and vacuum cleaner using the same
WO2005077242A2 (en) * 2004-02-12 2005-08-25 Arcelik Anonim Sirketi A vacuum cleaner
WO2005077242A3 (en) * 2004-02-12 2009-01-15 Arcelik As A vacuum cleaner
US7615089B2 (en) 2005-04-22 2009-11-10 Samsung Gwangju Electronics Co., Ltd. Filter assembly and cyclone dust collecting apparatus having the same
WO2007131858A1 (de) * 2006-05-16 2007-11-22 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger mit wenigstens einem fliehkraftabscheider
US8252096B2 (en) 2006-06-08 2012-08-28 Dyson Technology Limited Cleaning and/or filtering apparatus
US11547259B2 (en) 2007-12-19 2023-01-10 Omachron Intellectual Property Inc. Configuration of a cyclone assembly and surface cleaning apparatus having same
US8257457B2 (en) 2009-03-31 2012-09-04 Dyson Technology Limited Separating apparatus
US8182563B2 (en) 2009-03-31 2012-05-22 Dyson Technology Limited Separating apparatus
EP2279685A1 (de) 2009-07-24 2011-02-02 Dyson Technology Limited Zyklontrennvorrichtung mit einem elektrostatischem Filter
US8465574B2 (en) 2009-07-24 2013-06-18 Dyson Technology Limited Filter
WO2011010135A1 (en) 2009-07-24 2011-01-27 Dyson Technology Limited A surface treating appliance with electrostatic filter
WO2011010136A1 (en) 2009-07-24 2011-01-27 Dyson Technology Limited A cyclonic separating apparatus with electrostatic filter
WO2011010137A1 (en) 2009-07-24 2011-01-27 Dyson Technology Limited An electrostatic filter
US8409335B2 (en) 2009-07-24 2013-04-02 Dyson Technology Limited Separating apparatus
GB2472096B (en) * 2009-07-24 2013-04-17 Dyson Technology Ltd Separating apparatus with electrostatic filter
WO2011010138A1 (en) 2009-07-24 2011-01-27 Dyson Technology Limited An electrostatic filter
US8551227B2 (en) 2009-07-24 2013-10-08 Dyson Technology Limited Filter
US8572789B2 (en) 2009-07-24 2013-11-05 Dyson Technology Limited Separating apparatus
GB2472096A (en) * 2009-07-24 2011-01-26 Dyson Technology Ltd Separating apparatus with electrostatic filter
US10231586B2 (en) 2013-06-27 2019-03-19 Deregallera Holdings Ltd Vacuum cleaner
US10376900B2 (en) 2013-11-01 2019-08-13 Kx Technologies Llc Electrostatic removal of colloidal, soluble and insoluble materials from a fluid
JP2020506744A (ja) * 2017-02-06 2020-03-05 アクチエボラゲット エレクトロルックス 電気掃除機用の分離システム、および分離システムを備える電気掃除機
US11529035B2 (en) 2017-02-06 2022-12-20 Aktiebolaget Electrolux Separation system for vacuum cleaner and vacuum cleaner comprising the separation system

Also Published As

Publication number Publication date
EP0815788A3 (de) 1999-02-03
ITMI961308A0 (de) 1996-06-27
ITMI961308A1 (it) 1997-12-27
IT1284447B1 (it) 1998-05-21

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