WO2002078506A1 - Epurateur d'air avec filtre lavable - Google Patents

Epurateur d'air avec filtre lavable Download PDF

Info

Publication number
WO2002078506A1
WO2002078506A1 PCT/CA2002/000422 CA0200422W WO02078506A1 WO 2002078506 A1 WO2002078506 A1 WO 2002078506A1 CA 0200422 W CA0200422 W CA 0200422W WO 02078506 A1 WO02078506 A1 WO 02078506A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
filter
housing
cyclone
wash water
Prior art date
Application number
PCT/CA2002/000422
Other languages
English (en)
Inventor
Wayne E. Conrad
Original Assignee
Polar Light Limited
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 Polar Light Limited filed Critical Polar Light Limited
Publication of WO2002078506A1 publication Critical patent/WO2002078506A1/fr

Links

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
    • A47L9/1658—Construction of outlets
    • A47L9/1666—Construction of outlets with filtering means
    • 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
    • A47L9/12—Dry filters
    • A47L9/122—Dry filters flat
    • 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
    • A47L9/20—Means for cleaning filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/79—Regeneration of the filtering material or filter elements inside the filter by liquid process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/55—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for cleaning appliances, e.g. suction cleaners

Definitions

  • This invention relates generally to air cleaners, for example, vacuum cleaners.
  • the invention has been devised primarily, though not exclusively, in the context of vacuum cleaners that include at least one cyclone separator for cleaning air that flows through the vacuum cleaner, and a secondary filter downstream from the cyclone separator, for removing small particulate matter.
  • Cyclone separators which are sometimes referred to merely as cyclones, are devices that use centrifugal force and low pressure caused by spinning motion, to separate materials of differing density, size and shape. Cyclone separators are disclosed, for example, in United States Patents Nos. 3,425,192 and 4,593,429.
  • PCT Publication No. WO 00/40135 published July 13, 2000 discloses a vacuum cleaner that includes a cyclone separator in combination with a downstream electrostatic precipitator for removing fine particulate matter from the air that passes through the cyclone separator.
  • the cyclone separator is removable from the vacuum cleaner as a unit and the unit includes a bin for collecting dirt that has been removed by the cyclone. The bin can be separated from the remainder of the cyclone and emptied.
  • the present invention provides an air cleaner in which air is caused to flow along an air flow path from a dirty air inlet to a clean air outlet, wherein the air cleaner includes a washable air filter disposed in the air flow path.
  • the filter is enclosed in a housing that is removable from the air cleaner as a unit and the housing encloses the filter so as to protect a user from contact with the filter itself.
  • the housing has water inlet and outlet openings arranged to allow wash water to be directed through the filter to flush dirt from the filter without the user contacting the filter.
  • the air cleaner includes a cyclone separator in combination with the washable air filter and the washable air filter is disposed downstream of the cyclone separator.
  • the filter is an electrostatic filter of the type in which the filter is electrostatically charged by the air that flows through the vacuum cleaner.
  • PCT Publication No. WO 00/40135 mentioned previously discloses an electrostatic filter of this type.
  • both the cyclone separator and the electrostatic air filter are incorporated in a filter assembly that is removable as a unit from the vacuum cleaner.
  • the assembly may include a generally cylindrical dirt collection bin, and the housing of the electrostatic filter may be incorporated as part of a closure at the top of the bin.
  • the outlet opening can then act as either the water inlet or outlet for flushing the electrostatic precipitator.
  • FIG. 1 is a perspective view of an upright vacuum cleaner in accordance with the present invention
  • Fig. 2 is a perspective view of the filter assembly of the vacuum cleaner
  • Fig. 3 is a vertical sectional view through the filter housing of the filter assembly shown in Fig. 2, after removal of the cyclone bin, and showing flushing water flowing through the housing;
  • Fig. 4 is an exploded perspective view corresponding to Fig. 3 showing the electrostatic filter housing removed from the remainder of the cyclone structure;
  • Fig. 5 is a perspective view showing how the filter housing can be flushed separately from the remainder of the cyclone structure; and, Fig. 6 is a perspective view illustrating an alternative embodiment, in which the filter housing has flush water openings in its side wall.
  • Fig. 1 shows an upright vacuum cleaner in accordance with a preferred embodiment of the present invention.
  • the vacuum cleaner and its manner of operation are generally in accordance with the disclosure of PCT Publication No. WO 00/40135 referred to previously, to which reference may be made for specific details not found in the present disclosure.
  • the vacuum cleaner is generally denoted by reference numeral 20 and includes a floor cleaning head 22 that is mounted on wheels, one of which is visible at 24, for movement over a floor surface.
  • a dirty air inlet in the underside of the head is indicated at 26 and usually will accommodate a driven rotary brush or beater bar (not shown).
  • Extending upwardly from a rear portion of the head 22 is a support structure 28 for a filter assembly 30 that is removable as a unit from the vacuum cleaner.
  • the filter assembly is shown separately in Fig. 2.
  • the support structure 28 carries an upper body portion 32 of the vacuum cleaner that incorporates a fan and motor assembly (not shown) for drawing air through the vacuum cleaner and delivering cleaned air to a clean outlet 34 at the top of body portion 32.
  • the filter assembly 30 includes a cyclone separator generally denoted by reference 38 and an electrostatic air filter 40 enclosed in a housing 42.
  • a bin for collecting dirt removed by the cyclone separator is indicated at 44.
  • Bin 44 has a cylindrical side wall 46 that is transparent. Visible through the side wall of the bin is the internal structure 48 of the cyclone separator. This includes a main inlet pipe 50 that extends upwardly centrally of bin 44 and through which dirty air enters the cyclone from the floor cleaning head 22 of the vacuum cleaner.
  • pipe 50 extends upwardly and then laterally to a cyclone inlet opening 52 that directs air tangentially with respect to the internal surface of the side wall 46 of bin 44.
  • a cyclone inlet opening 52 that directs air tangentially with respect to the internal surface of the side wall 46 of bin 44.
  • air entering bin 44 from inlet 52 spirals downwardly on the internal surface of bin side wall 46 until it reaches a lower baffle member or distal wall 54 (Fig. 2), which deflects the air inwardly and upwardly adjacent the outer surface of inlet pipe 50.
  • the air then enters openings 56 in an upper housing 58 of the cyclone separator and then flows upwardly through the electrostatic filter 40 as indicated by the ghost outline arrows 60.
  • the air then travels upwardly through filter 40 and leaves the filter assembly 30 through an opening 62 in the top of filter housing 42.
  • the flow path of air from the dirty air inlet 26 of head 22 to the clean air outlet 34 of the vacuum cleaner is indicated at 64.
  • the air travels upwardly through inlet pipe 50 of the cyclone separator to the inlet 52 of the cyclone, from where it spirals downwardly adjacent the inner surface of the side wall 46 of the cyclone bin.
  • the air then travels back up adjacent the outer surface of inlet pipe 50 and into the openings 56 of the housing 58 of the cyclone assembly.
  • the air then travels upwardly through filter 40, and through the upper body portion 32 of the vacuum cleaner to outlet 34.
  • Filter assembly 30 may be removable from the remainder of the vacuum cleaner in any manner known in the art.
  • filter assembly 30 is removable from the remainder of the vacuum cleaner in the manner disclosed in the PCT application referred to previously, by slightly depressing the filter assembly and then pulling it outwardly.
  • the filter assembly housing 42 has a top surface that is angled upwardly to the right and that is shaped to provide a handle 66 that projects forwardly of the vacuum cleaner in the assembled condition, as best seen in Fig. 1.
  • the user grasps the handle 66, depresses the filter assembly slightly and pulls it forwardly and outwardly using the handle.
  • Fig. 2 shows the filter assembly as it would appear after removal from the remainder of the vacuum cleaner in this fashion.
  • filter assembly housing 42 may be removable from the vacuum cleaner without first removing bin 44 from the vacuum cleaner.
  • FIG. 3 it will be seen that the upper housing 58 of the cyclone assembly and the housing 42 of the filter 40 fit together to form a sub-assembly that also includes the inlet pipe 50 of the cyclone separator and baffle 54 (Fig. 2).
  • the housings 42 and 58 have the same cylindrical exterior configuration and fit together so that the sub-assembly forms a cylindrical closure that is a push-fit inside the upper portion of cyclone bin 44. As seen in Fig.
  • the sub-assembly has been separated from the cyclone bin 44 by lifting the sub-assembly from the bin. Bin 44 can now be emptied of accumulated dirt.
  • the sub-assembly shown in Fig. 3 can be conveniently manipulated by the user holding handle 66.
  • Filter 40 can be cleaned by directing flushing water downwardly through opening 62 as indicated at 68; the water will flow down through filter 40 and out through the openings 56 in the cyclone housing part 58.
  • the user can clean filter 40 without having to come in contact with the dirt that has accumulated on the filter and the dirt can simply be flushed away.
  • the filter 40 is shown in the drawings simply as a generally cylindrical filter structure that, in this embodiment, is an electrostatic filter of the form disclosed in the PCT application referred to previously. In principle, however, other forms of washable filter could be used, even a mechanical particle filter. Even though the filter 40 can be cleaned successfully as part of the sub-assembly shown in Fig. 3, the filter housing 42 is preferably detachable from the cyclone housing 58 as shown in Fig. 4, and can be flushed separately as illustrated in Fig. 5. As can be seen in Fig.
  • a bayonet coupling arrangement is provided between housing 42 and cyclone housing part 58 and comprises, e.g., three equi-angularly spaced bayonet fittings 70 that are designed to allow the two housing 42 and 58 to be connected or disconnected by relative rotation with respect to one another.
  • An actuator 72 for a detent 72a is depressed to permit such relative turning movement.
  • detent 72a engages in a notch 73 in filter housing 42, preventing relative turning of the two housings.
  • Alternate removable engagement means may be utilized such as a screw thread, a snap fit, an interference fit, screws or the like.
  • Housing 42 has a substantially open bottom wall 42a so that the filter can be cleaned by directing water either in through opening 62 and out through wall 42a, or in the reverse direction (after inverting housing 42).
  • housing 42 may have first and second portions 42b and 42c which are separable so as to permit access to filter 40.
  • housing portion 42b may be removably attached to housing portion 42c by any removable engagement means known in the art such as a bayonet mount, a screw thread, a snap fit, an interference fit, screws which are received in holes 42d or the like
  • Fig. 6 shows an alternative embodiment of the invention.
  • the filter housing 42 is provided with openings 74 in its side wall through which flush water can be directed and allowed to escape.
  • the openings 74 are in addition to the openings that are present in the preceding embodiment, to allow for flushing of the filter both in the direction of normal air flow through the filter (or counter to that direction) and in the radially inward direction. It is, however, to be understood that, within the broad scope of the invention, it is merely necessary that openings be provided in the housing 42 to allow flushing of the filter and that any configuration and arrangement of openings is suitable provided normal filtering air flow can take place through the housing.
  • openings 74 may be the air inlet to filter housing 42 or the air outlet therefrom.
  • openings 74 may be the air inlet to filter housing 42 or the air outlet therefrom.
  • the invention may also be used with a wet/dry vacuum cleaner.
  • the material separated by the cyclone separator of the vacuum cleaner may be removed from the vacuum cleaner by any alternate means known in the art.
  • the cyclone separator may have an opening therein to permit the separated material to be removed or the separated material may be transported to a removal station by means of a manually operate auger or the like.
  • the cyclone separator need not be separable from the vacuum cleaner for routine emptying in which case an access port may be provided for removal of the housing 42.
  • the filter assembly may include more than one cyclone separator.
  • the filter assembly may comprise a plurality of cyclonic separation stages that may be operated in series or parallel and, preferably, in series.
  • the first cyclonic separation stage may comprise a single cyclone separator and the second cyclonic separation stage may comprise a plurality of cyclone separators.
  • Filter housing 42 could optionally be incorporated in the air flow stream between the first and second cyclonic separation stages or downstream from the second cyclonic separation stage.
  • the water inlets and outlets may be of any shape and size that permit sufficient water to pass through filter 40 so that filter 40 may be rinsed. As the water passes through filter 40, it collects and removes fine particulate matter that has been collected by filter 40.
  • the water inlets and outlets may each comprise a single opening or a plurality of openings. The openings may be of uniform size or their size may vary.
  • an air filter assembly for example, of the form shown in Fig. 2 could form part of a room air cleaner in which air is caused to flow upwardly through the filter assembly and out into the room through opening 62.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

L'invention concerne un aspirateur (20) qui comprend un séparateur à cyclone (38) et un dépoussiéreur électrostatique (40) en aval du séparateur à cyclone (38) dans le chemin du débit d'air à travers l'aspirateur (20). Le dépoussiéreur électrostatique (40) comprend un élément de filtre lavable (40) incorporé dans un boîtier (42) pouvant être démonté de l'aspirateur (20) en tant qu'unité. Le boîtier (42) protège un utilisateur du contact avec l'élément de filtre (40) sale et possède des ouvertures d'entrée (62, 74) et sortie (42A, 74) d'eau à travers lesquelles l'eau peut être dirigée pour rincer la saleté de l'élément de filtre (40).
PCT/CA2002/000422 2001-03-30 2002-03-27 Epurateur d'air avec filtre lavable WO2002078506A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,342,993 2001-03-30
CA002342993A CA2342993A1 (fr) 2001-03-30 2001-03-30 Purificateur d'air avec filtre lavable

Publications (1)

Publication Number Publication Date
WO2002078506A1 true WO2002078506A1 (fr) 2002-10-10

Family

ID=4168766

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2002/000422 WO2002078506A1 (fr) 2001-03-30 2002-03-27 Epurateur d'air avec filtre lavable

Country Status (2)

Country Link
CA (1) CA2342993A1 (fr)
WO (1) WO2002078506A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2395448A (en) * 2002-11-22 2004-05-26 Samsung Kwangju Electronics Co A reusable dust collecting filter
GB2396097A (en) * 2002-11-25 2004-06-16 Samsung Kwangju Electronics Co Reusable filter assembly for vacuum cleaner
GB2400309A (en) * 2003-04-11 2004-10-13 Samsung Kwangju Electronics Co Cyclone-type dust collecting apparatus for a vacuum cleaner
FR2854047A1 (fr) * 2003-04-28 2004-10-29 Samsung Kwangju Electronics Co Appareil collecteur de poussieres a cyclone, et aspirateur
EP1464265A3 (fr) * 2003-04-05 2005-03-30 Hoover Limited Aspirateur
EP1692993A1 (fr) * 2005-02-17 2006-08-23 Lg Electronics Inc. Collecteur de poussières pour aspirateur
WO2007141523A1 (fr) * 2006-06-08 2007-12-13 Dyson Technology Limited Appareil de nettoyage et/ou de filtration
US7331084B2 (en) 2003-02-26 2008-02-19 Samsung Gwangju Electronics Co., Ltd. Dust collecting apparatus for cyclone type vacuum cleaner
US8182563B2 (en) 2009-03-31 2012-05-22 Dyson Technology Limited Separating apparatus
US10278557B2 (en) 2014-04-04 2019-05-07 Techtronic Industries Co. Ltd. Vacuum cleaner
CN112791518A (zh) * 2020-12-21 2021-05-14 长沙稻香农业科技有限公司 一种用于生物质热解燃气净化除尘的连续生产系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425192A (en) * 1966-12-12 1969-02-04 Mitchell Co John E Vacuum cleaning system
US4593429A (en) * 1980-06-19 1986-06-10 Prototypes, Ltd. Vacuum cleaning appliance
GB2280388A (en) * 1993-07-26 1995-02-01 Numatic Int Ltd Vacuum cleaner filter
US6026540A (en) * 1998-01-09 2000-02-22 Royal Appliance Mfg. Co. Upright vacuum cleaner with cyclonic airflow
WO2000040135A1 (fr) * 1999-01-08 2000-07-13 Fantom Technologies Inc. Aspirateur a filtration electrostatique et depoussiereur electrique utilise dans cet aspirateur
DE19912408A1 (de) * 1999-03-19 2000-09-28 Aeg Hausgeraete Gmbh Staubbehälter für Bodenpflegegeräte
WO2001005291A1 (fr) * 1999-07-19 2001-01-25 Sharp Kabushiki Kaisha Aspirateur

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425192A (en) * 1966-12-12 1969-02-04 Mitchell Co John E Vacuum cleaning system
US4593429A (en) * 1980-06-19 1986-06-10 Prototypes, Ltd. Vacuum cleaning appliance
GB2280388A (en) * 1993-07-26 1995-02-01 Numatic Int Ltd Vacuum cleaner filter
US6026540A (en) * 1998-01-09 2000-02-22 Royal Appliance Mfg. Co. Upright vacuum cleaner with cyclonic airflow
WO2000040135A1 (fr) * 1999-01-08 2000-07-13 Fantom Technologies Inc. Aspirateur a filtration electrostatique et depoussiereur electrique utilise dans cet aspirateur
DE19912408A1 (de) * 1999-03-19 2000-09-28 Aeg Hausgeraete Gmbh Staubbehälter für Bodenpflegegeräte
WO2001005291A1 (fr) * 1999-07-19 2001-01-25 Sharp Kabushiki Kaisha Aspirateur
EP1199023A1 (fr) * 1999-07-19 2002-04-24 Sharp Kabushiki Kaisha Aspirateur

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847448A1 (fr) * 2002-11-22 2004-05-28 Samsung Kwangju Electronics Co Filtre de collecte de poussiere pour aspirateur et aspirateur comportant un tel filtre
GB2395448B (en) * 2002-11-22 2004-11-10 Samsung Kwangju Electronics Co Dust collecting filter of vacuum cleaner and vacuum cleaner having the same
US6913635B2 (en) 2002-11-22 2005-07-05 Samsung Gwangju Electronics Co. Ltd Dust collecting filter of vacuum cleaner and vacuum cleaner having the same
GB2395448A (en) * 2002-11-22 2004-05-26 Samsung Kwangju Electronics Co A reusable dust collecting filter
GB2396097A (en) * 2002-11-25 2004-06-16 Samsung Kwangju Electronics Co Reusable filter assembly for vacuum cleaner
GB2396097B (en) * 2002-11-25 2005-06-08 Samsung Kwangju Electronics Co Dust collecting filter for vacuum cleaner and vacuum cleaner having the same
US7331084B2 (en) 2003-02-26 2008-02-19 Samsung Gwangju Electronics Co., Ltd. Dust collecting apparatus for cyclone type vacuum cleaner
EP1464265A3 (fr) * 2003-04-05 2005-03-30 Hoover Limited Aspirateur
CN100345512C (zh) * 2003-04-05 2007-10-31 胡佛有限公司 真空吸尘器
US7105035B2 (en) 2003-04-11 2006-09-12 Samsung Gwangju Electronics Co., Ltd. Cyclone-type dust collecting apparatus for vacuum cleaner
GB2400309A (en) * 2003-04-11 2004-10-13 Samsung Kwangju Electronics Co Cyclone-type dust collecting apparatus for a vacuum cleaner
GB2400309B (en) * 2003-04-11 2005-02-23 Samsung Kwangju Electronics Co Cyclone-type dust collecting apparatus for a vacuum cleaner
ES2241462A1 (es) * 2003-04-28 2005-10-16 Samsung Gwangju Electronics Co., Ltd Dispositivo de recogida de polvo, ciclonico, para un aparato aspirador y aparato aspirador que comprende dicho dispositivo.
US7105034B2 (en) 2003-04-28 2006-09-12 Samsung Gwangju Electronics Co., Ltd. Cyclone-type dust collecting apparatus for vacuum cleaner
FR2854047A1 (fr) * 2003-04-28 2004-10-29 Samsung Kwangju Electronics Co Appareil collecteur de poussieres a cyclone, et aspirateur
EP1692993A1 (fr) * 2005-02-17 2006-08-23 Lg Electronics Inc. Collecteur de poussières pour aspirateur
WO2007141523A1 (fr) * 2006-06-08 2007-12-13 Dyson Technology Limited Appareil de nettoyage et/ou de filtration
US8252096B2 (en) 2006-06-08 2012-08-28 Dyson Technology Limited Cleaning and/or filtering apparatus
US8182563B2 (en) 2009-03-31 2012-05-22 Dyson Technology Limited Separating apparatus
US10278557B2 (en) 2014-04-04 2019-05-07 Techtronic Industries Co. Ltd. Vacuum cleaner
CN112791518A (zh) * 2020-12-21 2021-05-14 长沙稻香农业科技有限公司 一种用于生物质热解燃气净化除尘的连续生产系统
CN112791518B (zh) * 2020-12-21 2022-03-29 长沙稻香农业科技有限公司 一种用于生物质热解燃气净化除尘的连续生产系统

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