EP0836827A1 - A household vacuum cleaner - Google Patents
A household vacuum cleaner Download PDFInfo
- Publication number
- EP0836827A1 EP0836827A1 EP96830540A EP96830540A EP0836827A1 EP 0836827 A1 EP0836827 A1 EP 0836827A1 EP 96830540 A EP96830540 A EP 96830540A EP 96830540 A EP96830540 A EP 96830540A EP 0836827 A1 EP0836827 A1 EP 0836827A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cyclone
- funnel
- container
- dust
- vacuum cleaner
- 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.)
- Granted
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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
- A47L9/1616—Multiple arrangement thereof
- A47L9/1625—Multiple arrangement thereof for series flow
- A47L9/1633—Concentric cyclones
Definitions
- the present invention relates to a double-cyclone vacuum cleaner with independent chambers, which can be emptied separately, for collecting dust from the first and second cyclones.
- vacuum cleaners are used in which the flow of dusty air, drawn by a motor/suction fan assembly, passes through a bag which filters and collects the dust and cleans the air.
- the handling required to remove and replace the dirty dust bag is a source of dust.
- a further disadvantage of such vacuum cleaners is that the greater the degree of filtering and the finer the dust they are able to filter, the more power they use because the dust bag itself constitutes an obstruction to the air flow, causing a significant pressure drop which becomes worse as the dust accumulates in the bag and clogs it.
- Solid particles of larger dimensions are accumulated in a chamber which can be periodically emptied.
- vacuum cleaners have been proposed with two cyclones in cascade, a first cyclone serving to capture the particles of larger dimensions and a second carrying out a further filtering.
- a further disadvantage of double-cyclone vacuum cleaners is constituted by the fact that in order to make the machine reasonably compact, the two cyclones are generally arranged coaxially, one inside the other, and the output flow to the suction motor unit from the top of the second cyclone has to be conveyed through an annular duct passing around the two cyclones and to the suction motor unit which, for reasons of stability but also for operational reasons (it often has to drive rotating brushes) is generally arranged below the cyclones, in a head with wheels for moving around the floor.
- Vacuum cleaners are also known in which the duct between the output of the second cyclone and the suction unit is essentially cylindrical and thus causes a smaller pressure drop, arranged to one side of the two cyclones, but this, too, makes the machine bigger, which should be avoided.
- the present invention solves these problems and satisfies the aforesaid requirements by providing a domestic double-cyclone vacuum cleaner which is highly efficient, compact, of limited suction power used efficiently in the cyclones, which allows the two collection chambers to be emptied separately, in particular allowing the chamber for coarser particles to be emptied without needing to open the chamber for fine dust.
- the two cyclones of the vacuum cleaner constitute two independent units which are easily separable from each other, such separation making it possible to empty the chamber for coarser particles without needing to open and empty the chamber for fine dust, this latter operation requiring a closure cap to be removed from the chamber.
- the suction duct linking the second cyclone for collecting finer dust to the suction motor unit is constituted by a cylindrical tube coaxial with the two cyclones and passing through them so that the vacuum cleaner is more compact and any pressure drop in the duct is kept to a minimum.
- this arrangement ensures that the suction duct is perfectly airtight, which is otherwise very difficult to achieve.
- suction duct acts as a centring pin for the user to fit the two cyclones together, ensuring that they are easy to separate and fit back together.
- the vacuum cleaner is conveniently fitted with a disposable capsule, removably housed in the chamber for fine particles, which collects the fine dust, and with means for closing and sealing this capsule without opening the chamber, whereby when it is next necessary to open the chamber to remove the capsule, this can be done without any dispersal of dust.
- a double-cyclone vacuum cleaner essentially comprises a first hollow frusto-conical body 1 with a lower end 2, having a smaller diameter, fixed to a generally cylindrical container 3 with a converging collar 4 and a generally flat bottom 5.
- a generally cylindrical (in reality slightly conical so as to facilitate the moulding operation) duct 6 extends coaxially through the container 3 and the frusto-conical body 1 and, conveniently, has a step halfway along forming an external annular shoulder 7, the purpose of which will be explained later.
- the frusto-conical body 1, the container 3, the bottom 5 and the duct 6 can easily be moulded from plastics material as a unit, indicated hereinafter as the lower element 11.
- the frusto-conical body 1 is closed at the top by a cap 8, generally shaped like an inverted cylindrical cup, also moulded from plastics material and attached to the appropriately shaped upper rim 9 of the frusto-conical body 1, with the interposition of a seal 10.
- a first funnel-shape element 13, extending inside the frusto-conical body 1, and a second funnel-shape element 14, extending inside the first, are fixed inside the cap 8 by heat-welding, gluing or simply as a pressure fit.
- the cap 8 Near its rim 15, the cap 8 has an inlet aperture 16 for the tangential entry of air into the frusto-conical annular space formed between the body 1 and the funnel-shape element 13, which closes the top of this annular space.
- the top of the funnel-shape element 14, which is fixed to the top 17 of the cap 8, has in turn apertures 18 for admitting air into the funnel-shape element 14.
- the funnel-shape element 14 also has helical ribs 19, 119 for guiding the air entering it and imparting to it a vortex motion tangential to the walls of the element 14 itself.
- the bottom end of the funnel 14 is closed by a generally cylindrical sleeve 20, housed within the funnel.
- the sleeve 20 is freely engaged on the duct 6, with its bottom end resting on the abutment 7.
- the bottom end of the funnel 14 is conveniently fitted with an upwardly tapering collar 21, possibly made of resilient material, which mates with the lower end of the funnel.
- the cylindrical sleeve 20 is connected at the top, by means of a set of arms 22, to a generally hemispherical cap 23 with a vertical rod 24 passing slidably through the top wall 17 of the cap 8 and ending in a push-button 25 outside the cap 8.
- a recess 26 is conveniently formed in the top wall 17 to house the push-button 25 and to limit the downward travel thereof to a predetermined stroke.
- a compression spring 27 between the push-button and the upper wall 17 ensures in its rest position that the lower aperture of the funnel 14 is closed.
- the assembly comprising the cap 8, the funnel 13, the funnel 14 and the sleeve 20 with the rod 24 and push-button 25 constitutes an upper assembly, generally indicated 28, of the filtering system of the vacuum cleaner, which is removably connected to the lower element 11.
- the vacuum cleaner is completed by per se conventional elements such as a flexible suction hose 29 which is connectable to the suction aperture 16 and ends in a suction tool 30, possibly interchangeable with a set of different tools, a suction motor assembly 31, sealingly connected with or without an interposed auxiliary filter, perhaps of activated carbon, to the end of the duct 6, and possibly housed in a movable base 32 with wheels 33, 34 and an aperture 35 for possible connection to the suction duct 29 input and, finally, a framework 36 for removably containing the filtering system formed by the upper assembly 28 and the lower element 11.
- a flexible suction hose 29 which is connectable to the suction aperture 16 and ends in a suction tool 30, possibly interchangeable with a set of different tools
- a suction motor assembly 31 sealingly connected with or without an interposed auxiliary filter, perhaps of activated carbon, to the end of the duct 6, and possibly housed in a movable base 32 with wheels 33, 34 and an aperture 35 for possible connection to the suction duct 29 input and
- the filtering system is particularly suited for application either as a portable "back-pack” vacuum cleaner, as described for example in European publication EP-A-0557096, or as a floor-standing vacuum cleaner.
- the lower element 11 is separated from the upper assembly 28 by releasing the clip devices 12 and sliding the funnel 14 and the sleeve 20 from the duct 6.
- the lower element can then be carried entirely safely as it is only partly full of solid particles and upturned and emptied into a bin.
- a refuse sack can be fitted over the element which is then inverted thus emptying the contents of the container 3 into the sack.
- the presence of the open central duct 6 provides a pressure compensation aperture and helps to avoid puffs of air should the user want to pack down the bin liner and close it before removing it from the lower element 11.
- the upper cap 8 may have projections 37 in the recess 26 which make it easier to achieve the right pressure on the button 25.
- the filtering system thus proves to be particularly efficient and effort-saving, enabling the container 3 and the cyclone 14 to be emptied separately, even at different times, as frequently as in actually required and with no risk of dispersing dust.
- the abutment 7 prevents any accidental opening of the cyclone 14 and thus any spillage of dust from the cyclone 14 to the container 3.
- FIG 3 there is shown a diametral section of the upper unit of a double cyclone vacuum cleaner which differs from that of Figures 1 and 2 by the fact that the upper unit 28 has a cylindrical sleeve 20 fitted by means of radiating arms to the hemispherical cap 23 and operated by an upward rather than a downward movement in order to open the cyclone 14.
- This movement is transferred by a threaded shaft 38, engaged on the hemispherical cap 23 and operated by a handle 39, which screws into a threaded seat in the top wall 17 of the cap 8 which forms a convenient recess for the handle 39.
- the left-hand diametral half-section shows the upper unit of the vacuum cleaner coupled to the lower element with the cyclone 14 closed at the bottom in its normal operating condition.
- the right-hand diametral section of the same drawing shows the upper unit 28 separated from the lower element 11, with the cyclone open for emptying.
- the top wall 17 may have a central aperture of suitable diameter, closed by a lid removably fitted to the top wall by either a screw or a bayonet fastening.
- the lid itself can act as a deflector like the cap 23 of Figures 1, 2 and 3 and the sleeve would thus be fixed to the lid and removable with it.
- lid it is also possible to connect the lid to the cap 23 by means of an axial screw and nut coupling, so as to enable relative rotation between the lid and the cap 23 along the axis of the sleeve 20.
- the upper assembly with an openable top lid, with a deflector cap fixed to the lid and removable with it, as well as an upper cyclone and associated sleeve which are fixed to each other, removably housed in the upper cap 8 and removable therefrom by opening the top lid.
- the dust collected in the upper cyclone can be emptied by turning the upper cyclone upside-down.
- the first conical element 1 forms the first cyclone and is removably engaged in a conical aperture 60 in the lower container 3 which is generally bottle shaped (or shaped like a flask with an elliptical section).
- the container 3 is traversed by the axial duct 6 which extends the entire height of the container and the first cyclone.
- the frusto-conical element 1 is fixed to the upper unit 28 and joined to the upper closure cap 8.
- the funnel-shape element 13 is arranged inside the frusto-conical element 1 with the funnel-shape element 14 which forms the second cyclone inside the element 13 and the axial sleeve 20 fixed in this case to the element 14.
- the funnel-shape element 14 and its associated axial sleeve are removable from the cap 8 through a lid at the top 61 which is removably fitted to the cap 8, by a screw or bayonet fitting, for example, or by clips.
- the inside of the lid 61 has a flow-guide and deflector 62 around the top of the sleeve 20.
- deflectors 63 which deflect and guide the flow of air drawn into the cyclone 14 from outside it, in a direction tangential to its periphery.
- the relative positioning of the duct 6, the upper assembly 28 (which in this case also includes the cyclone 1) and the cyclone 14 with its associated sleeve is maintained by the engagement of the sleeve 20 on the duct 6 and by the fact that radial appendages 64 formed in the top of the cyclone 14, rest on an annular abutment 65 formed in the cap 8.
- the element 14 can be removed from the upper element 28 for emptying, simply by opening the lid 61, without having to open or otherwise handle the lower container 3.
- a double cyclone vacuum cleaner in which the finer dust trapped by the cyclone 14 is collected in a capsule which can be hermetically sealed by a closure device with no need to open the vacuum cleaner, the capsule remaining closed when the vacuum cleaner is opened in order to remove the capsule and replace it.
- the vacuum cleaner is shown in its working condition, while the right hand side shows the capsule closed by the closure device.
- the funnel 14 extends to form an inner, coaxial sleeve 41 which engages the axial duct 6 of the lower element 11.
- the funnel 14 has a shoulder 42 in its middle portion on which rests a generally semitoroidal outer projection (with corresponding inner recess) of a capsule 43, made of plastics material and generally cup-shape (formed by blow moulding) with a central duct 55 engageable on the sleeve 41 with one end 50 bent inwardly so as to rest on the end of the sleeve 41 and the duct 6 which both act as supports.
- the funnel 14 extends into a generally cylindrical portion 141 and is closed at the top by a removable lid 44, screw or bayonet fitted to the top of the cap 8.
- the lid 44 has an axial hole for receiving an axially movable operating rod 45 which is fixed to a control button 46, outside the lid and to a generally hemispherical cap 47, inside the lid, with its concave face facing the bottom end of the funnel 14.
- a capsule lid 48 made of plastics material and generally formed like a hemispherical cup, is housed in the cap 47 under enough pressure to ensure that it is in a stable position, and has an annular rim 49, strengthened, for example by a rolled edge and a bottom 51 shaped into a cylindrical cavity mating with the end 50 of the capsule 43.
- the cap 47 can have a projection 53 around part of its edge for pushing the rim 49 to engage the toroidal recess 52.
- the capsule is closed and sealed effortlessly by turning the button 46, which is specially shaped for turning, at the same time as pressing it.
- the capsule can then be removed from the cyclone, either by lifting it by gripping the capsule lid or by turning the upper unit upside-down so that the capsule falls out by gravity without being handled and can be disposed of in a bin, without the slightest dispersal of dust.
- the capsule and its lid can be made cheaply of very thin blow moulded plastics material (or of waterproofed paper) like the plastic cups used in drink vending machines.
- the capsules (and lids) are naturally cone-shaped so that the capsules fit inside each other as do the lids.
- a flexible bag made of plastics material or paper and specially shaped with a central duct which can be fitted onto the duct 6 and held between the duct 6 and the sleeve 20, while the outer rim of the bag is held between the rim 9 (see Figure 1) of the lower element and the rim 15 of the cap 8.
- the bag can then be removed from the container 3 without the risk of dispersing any particles.
- the second cyclone is constituted by the cylindrical portion 141 and beneath this by the funnel 14 which has a variable cone shape: being first more and then less accentuated.
- the portion which has a more accentuated cone shape is more effective in capturing dust in the cyclone.
- the funnel-shaped element 14 has the same cone angle up to the level of the intake aperture 18, with the capsule shaped to match.
- the lid 48 has an inverted frusto-conical shape with a central crater so that the rim of the crater separates the vortex flow entering the cyclone from the flow exiting towards the duct 6, thereby carrying out the same function as the deflector cap 47 of Figure 4, which may be replaced by a simple disc for pushing the lid 48 towards the capsule 43.
- the lower portion of the cyclone formed by the funnel 14 acts as a storage chamber, it may be convenient, despite a loss of storage space, to make the upper part of the cyclone the most effective in trapping dust, by making it more conical, compared to the lower portion.
- the cylindrical or conical shape of the cyclones does not mean that sections through the axis of the cyclones must be strictly circular.
- They may also be elliptical, so as to achieve a compromise between the requirements of the flow and predetermined size limits.
- the same criterion applies to the container for the coarser particles, such as the container 3 of Figure 1, which may be elliptical in section or even rectangular or square, conveniently fitted to the cone shape of the cyclone, so as to increase its capacity within the size limits determined in two directions perpendicular to each other and perpendicular to the axis of the cyclones.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
Description
The replacement causes serious inconvenience to the user.
Claims (7)
- A cyclone vacuum cleaner for domestic use which includes a first cyclone (1) and a second, coaxial cyclone (14) connected in cascade and suction means (31) for generating a flow of air from an air intake (16) for dust-laden air through said cyclones in sequence,
said first cyclone (1) extending downwards into a first container (3) for collecting particles, said second cyclone (14) extending inside said first cyclone (1),
characterised in thatsaid first container (3) is traversed by a suction duct (6) coaxial to said cyclones and extending inside said first and second cyclone as far as the top of said second cyclone (14) so as to put this second cyclone into communication with said suction means (31),said second cyclone is constituted by a funnel-shape element (14), closed at the bottom by a sleeve (20) which extends coaxially inside said funnel-shape element (14) and is freely engaged in said suction duct (6), said second cyclone (14) being separable from said first cyclone (1) and from said first container (3),the lower portion of said funnel-shape element (14) constituting a second dust container separate from said first container (3) andsaid vacuum cleaner includes means (24,25,38,44,45,46) for opening said second cyclone so as to empty said second container. - A vacuum cleaner according to Claim 1 in which said opening means include means (22,23,24,25,38,39) for moving said sleeve (20) axially inside said funnel-shape element (14) from a closed position, in which the bottom of said funnel-shape element (14) is closed, to a position in which said funnel-shape element is open at the bottom, to enable the disposal of dust collected therein.
- A vacuum cleaner according to Claim 2, in which said sleeve (20) has an end collar (21) sealably engaged with the lower end of said funnel-shape element (14) and said moving means comprise a push-button (25) fixed to said sleeve (20) for pushing said collar downwards, moving it away from the lower end of said funnel-shape element.
- A vacuum cleaner according to Claim 2, in which said sleeve (20) has one end sealably engaged with the lower end of said funnel-shape element (14) and said moving means comprise a knob (39) acting on a rod (38) coupled to said sleeve (20) so as to urge said sleeve end into said funnel-shape element.
- A vacuum cleaner according to Claim 1 in which said opening means include a removable upper lid of said second cyclone, fixed to said sleeve (20).
- A vacuum cleaner according to Claim 1, in which said opening means include a removable upper lid (44) of said second cyclone for inserting and subsequently removing a dust-storage capsule (43), shaped like said second container, said removable upper lid including positioning means (45,46,47,54) operable to position a capsule lid (48) for the capsule (43) inside said second cyclone in one or the other of two positions in which the capsule (43) is open to receive dust collected by said second cyclone or closed to encapsulate the dust respectively.
- A dust containment capsule for a vacuum cleaner according to Claim 6, characterised in that it includes a container (43) of generally conical cup-shape with a base connected to an axial duct (55), which extends inside said cup and is open at either end, and a closure lid (44) with a rim (49) which can be forcibly engaged in an annular recess (52) of said container and a central recess (51) which mates with one end of said central duct, in such a way that said container is sealed by said lid.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19960830540 EP0836827B1 (en) | 1996-10-21 | 1996-10-21 | A household vacuum cleaner |
DE1996611093 DE69611093T2 (en) | 1996-10-21 | 1996-10-21 | Household vacuum cleaners |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19960830540 EP0836827B1 (en) | 1996-10-21 | 1996-10-21 | A household vacuum cleaner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0836827A1 true EP0836827A1 (en) | 1998-04-22 |
EP0836827B1 EP0836827B1 (en) | 2000-11-29 |
Family
ID=8226040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960830540 Expired - Lifetime EP0836827B1 (en) | 1996-10-21 | 1996-10-21 | A household vacuum cleaner |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0836827B1 (en) |
DE (1) | DE69611093T2 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000021428A1 (en) * | 1998-10-08 | 2000-04-20 | Cambridge Consultants Limited | Suction cleaner |
US6334234B1 (en) | 1999-01-08 | 2002-01-01 | Fantom Technologies Inc. | Cleaner head for a vacuum cleaner |
WO2002082966A1 (en) * | 2001-04-12 | 2002-10-24 | Dyson Ltd | Cyclonic separating apparatus |
US6782585B1 (en) | 1999-01-08 | 2004-08-31 | Fantom Technologies Inc. | Upright vacuum cleaner with cyclonic air flow |
US6863702B2 (en) | 2000-01-14 | 2005-03-08 | White Consolidated Ltd. | Bagless dustcup |
EP1516574A2 (en) * | 2000-07-06 | 2005-03-23 | John Herbert North | Improved air/particle separator |
US7014671B2 (en) * | 2003-05-24 | 2006-03-21 | Samsung Gwangju Electronics Co., Ltd. | Cyclone type dust collecting apparatus of vacuum cleaner |
CN100352393C (en) * | 2005-05-27 | 2007-12-05 | 王跃旦 | Integral twice separation dust cup of dust collector |
WO2012038712A1 (en) * | 2010-09-23 | 2012-03-29 | Dyson Technology Limited | A filter assembly for a vacuum cleaning appliance |
KR101130033B1 (en) * | 2005-06-01 | 2012-04-02 | 엘지전자 주식회사 | Dust collecting unit |
US20130227813A1 (en) * | 2012-03-02 | 2013-09-05 | G.B.D. Corp. | Surface cleaning apparatus |
WO2014016007A1 (en) * | 2012-07-26 | 2014-01-30 | Aktiebolaget Electrolux | Cyclone dust separator unit and method of manufacturing a cyclone dust separator |
US8782850B2 (en) | 2006-02-28 | 2014-07-22 | Lg Electronics Inc. | Vacuum cleaner |
US8800104B2 (en) | 2011-03-04 | 2014-08-12 | G.B.D. Corp. | Dirt collection chamber with a recessed column |
US8863352B2 (en) | 2011-03-04 | 2014-10-21 | G.B.D. Corp. | Dirt collection chamber for a surface cleaning apparatus |
US9009912B2 (en) | 2011-03-04 | 2015-04-21 | G.B.D. Corp. | Dirt separation apparatus for a surface cleaning apparatus |
US9204772B2 (en) | 2011-03-04 | 2015-12-08 | Omachron Intellectual Property Inc. | Dirt collection chamber for a surface cleaning apparatus |
US10143345B2 (en) | 2016-01-22 | 2018-12-04 | Dyson Technology Limited | Vacuum cleaning apparatus |
US10299648B2 (en) | 2016-01-22 | 2019-05-28 | Dyson Technology Limited | Vacuum cleaner |
US10390670B2 (en) | 2016-01-22 | 2019-08-27 | Dyson Technology Limited | Separating apparatus and vacuum cleaner |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6238451B1 (en) | 1999-01-08 | 2001-05-29 | Fantom Technologies Inc. | Vacuum cleaner |
US6829804B2 (en) | 2002-03-26 | 2004-12-14 | White Consolidated, Ltd. | Filtration arrangement of a vacuum cleaner |
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-
1996
- 1996-10-21 DE DE1996611093 patent/DE69611093T2/en not_active Expired - Fee Related
- 1996-10-21 EP EP19960830540 patent/EP0836827B1/en not_active Expired - Lifetime
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CA978485A (en) * | 1972-06-20 | 1975-11-25 | Clement W. Goodine | Entrained material separator for use with domestic vacuum cleaners |
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Title |
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Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000021428A1 (en) * | 1998-10-08 | 2000-04-20 | Cambridge Consultants Limited | Suction cleaner |
US6334234B1 (en) | 1999-01-08 | 2002-01-01 | Fantom Technologies Inc. | Cleaner head for a vacuum cleaner |
US6782585B1 (en) | 1999-01-08 | 2004-08-31 | Fantom Technologies Inc. | Upright vacuum cleaner with cyclonic air flow |
US6863702B2 (en) | 2000-01-14 | 2005-03-08 | White Consolidated Ltd. | Bagless dustcup |
EP1516574A2 (en) * | 2000-07-06 | 2005-03-23 | John Herbert North | Improved air/particle separator |
EP1516574A3 (en) * | 2000-07-06 | 2005-03-30 | John Herbert North | Improved air/particle separator |
AU2002241151B2 (en) * | 2001-04-12 | 2004-10-07 | Dyson Technology Limited | Cyclonic separating apparatus |
AU2002241151C1 (en) * | 2001-04-12 | 2005-03-24 | Dyson Technology Limited | Cyclonic separating apparatus |
US6989039B2 (en) | 2001-04-12 | 2006-01-24 | Dyson Limited | Cyclonic separating apparatus |
WO2002082966A1 (en) * | 2001-04-12 | 2002-10-24 | Dyson Ltd | Cyclonic separating apparatus |
US7014671B2 (en) * | 2003-05-24 | 2006-03-21 | Samsung Gwangju Electronics Co., Ltd. | Cyclone type dust collecting apparatus of vacuum cleaner |
CN100352393C (en) * | 2005-05-27 | 2007-12-05 | 王跃旦 | Integral twice separation dust cup of dust collector |
KR101130033B1 (en) * | 2005-06-01 | 2012-04-02 | 엘지전자 주식회사 | Dust collecting unit |
US8782850B2 (en) | 2006-02-28 | 2014-07-22 | Lg Electronics Inc. | Vacuum cleaner |
CN102406486B (en) * | 2010-09-23 | 2015-01-21 | 戴森技术有限公司 | Filter assembly for vacuum cleaning appliance |
WO2012038712A1 (en) * | 2010-09-23 | 2012-03-29 | Dyson Technology Limited | A filter assembly for a vacuum cleaning appliance |
JP2012066081A (en) * | 2010-09-23 | 2012-04-05 | Dyson Technology Ltd | Filter assembly for vacuum cleaner |
CN102406486A (en) * | 2010-09-23 | 2012-04-11 | 戴森技术有限公司 | Filter assembly for vacuum cleaning appliance |
US9161668B2 (en) | 2010-09-23 | 2015-10-20 | Dyson Technology Limited | Filter assembly for a vacuum cleaning appliance |
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Also Published As
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DE69611093D1 (en) | 2001-01-04 |
EP0836827B1 (en) | 2000-11-29 |
DE69611093T2 (en) | 2001-05-23 |
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