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WO1999033387A1 - Filtres - Google Patents

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Publication number
WO1999033387A1
WO1999033387A1 PCT/GB1998/003799 GB9803799W WO9933387A1 WO 1999033387 A1 WO1999033387 A1 WO 1999033387A1 GB 9803799 W GB9803799 W GB 9803799W WO 9933387 A1 WO9933387 A1 WO 9933387A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
web
tube
roll
store
Prior art date
Application number
PCT/GB1998/003799
Other languages
English (en)
Inventor
Leonard John Carver
Alan Thomas Wright
Original Assignee
Carver Plc
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 Carver Plc filed Critical Carver Plc
Priority to AU17688/99A priority Critical patent/AU740576B2/en
Priority to EP98962551A priority patent/EP1041916A1/fr
Priority to JP2000526152A priority patent/JP2001526925A/ja
Priority to CA002319377A priority patent/CA2319377A1/fr
Publication of WO1999033387A1 publication Critical patent/WO1999033387A1/fr
Priority to NO20003333A priority patent/NO20003333L/no

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
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1481—Means for removing bags in suction cleaners, e.g. ejecting means; Means for exchanging bags
    • 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
    • A47L9/127—Dry filters tube- or sleeve-shaped
    • 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
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • 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
    • B01D46/18—Particle separators, e.g. dust precipitators, using filtering belts
    • 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
    • B01D46/42—Auxiliary equipment or operation thereof

Definitions

  • This invention concerns filters of a kind comprising means defining a flow path for fluid which is connected or connectible to means for propelling a flow of fluid along the flow path, and means for locating a porous filter material in the flow path so that fluid flowing along the flow path flows through the material and any particulate matter entrained in the flow of fluid is removed from the flow as the fluid flows through the material .
  • Such filters are extremely common for filtering liquids and gases, e.g. paper filters for filtering liquids in laboratories to collect precipitates, air filters for removing dust and pollen.
  • a suction cleaner comprising a motor to drive an impeller in a housing to propel a flow of air along a flow path within the housing via filter means in the housing, which is characterised in that the filter means comprises a feed filter-web store, filter web advance means to draw filter-web from the store to expose fresh portions of the web to the flow path, and a used filter-web store in the housing to receive used filter-web and deposits thereon.
  • the filter-web In the used filter-web store the bulk of the matter collected is separate from the filter-web, and can give rise to problems during disposal. Furthermore, the filter means disclosed is not well suited to other uses, and problems arise in trying to adapt it e.g. for filtering liquids .
  • the present invention provides a filter comprising means defining a flow path for fluid which is connected or connectible to means for propelling a flow of fluid along the flow path, and means for locating a porous filter material in the flow path so that fluid flowing along the flow path flows through the material and any particulate matter entrained in the flow of fluid is removed from the flow as the fluid flows through the material, characterised in that:- (a) the filter is provided with a store for a filter-web in the form of a roll, filter web advance means to draw filter-web from a roll in the store to expose fresh portions of the web to the flow path, and to convey used portions of the web to a used filter-web store which thereby receives used filter-web and particular matter deposited thereon;
  • the filter-web advance means comprises traction or pulling means arranged to draw web from the store in the form of a spiral tube;
  • the flow path is arranged so that, in use, particulate laden fluid is directed to the inside of the roll and flows outwardly through the roll, so that as the web is drawn from the store in the form of a tube particulate matter is trapped within the tube and conveyed to the used filter-web store wrapped in the tube.
  • the used filter-web store may have a drain opening over, or be disposed alongside, a sump so that a suction cleaner incorporating the filter can be used as a "wet and dry” cleaner if the filter web is insoluble in, and resistant to degradation by, liquids.
  • the wrapped particulate matter can be easily and conveniently removed for disposal, simply by tearing the tube where it emerges from the pulling means.
  • the traction or pulling means is preferably of automatic form, but may be manually actuated.
  • the automatic form of said means preferably comprises a mechanism responsive to pressure differential between inlet and outlet portions of the air flow, i.e. the pressure differential across the portion of the web.
  • the filter-web used in the filter of the invention is preferably a roll of fibrous sheet material or porous paper which is relatively inexpensive.
  • FIGURES 1A and IB show diagrammatically a filter web and pulling means of a filter of the invention, respectively in cross-section and in elevation;
  • FIGURE 2 shows the internal arrangement of a suction cleaner having a filter in accordance with one embodiment of the invention
  • FIGURE 3 shows, similarly, the internal arrangement of a second embodiment
  • FIGURE 4 is a similar view of a third embodiment
  • FIGURE 5 is a similar view of a fourth embodiment
  • the filter 10 uses a roll 11 of filter-web 12 of a porous paper or fibrous sheet material, from the inside surface of which roll 11 the web 12 is withdrawn linearly, in the direction of arrow A by pulling means 27, with the result that it naturally forms a spirally wound tube 13 in which the turns overlap by at least 1cm and preferably two or more centimetres .
  • the filter 10 of each of the embodiments shown therein is incorporated into a suction cleaner 20.
  • the roll 11 is fitted into a perforate sleeve 21 between annular sealing discs 22 and 23.
  • the sleeve 21 is located in an outer housing 24, and extends from one end of an inner housing 25 within which a used filter-web store 26 is provided at the other end.
  • the tube 13 is conveyed into the store 26 by automatically operable pulling means 27.
  • the outer housing 24 has an inlet end piece 32 which defines an inlet opening 33 and abuts the sealing disc 22 to clamp the latter against one end 34 of the roll 11 and against the adjacent ends of the housings 24 and 25; and the housing 25 is provided with an internal funnel shaped guide 35 to guide the tube 13 towards the pulling means 27.
  • the guide 35 abuts the sealing disc 23.
  • An extractor fan and motor unit 36 is provided to draw air from a flow space 37 between the housings 24 and 25, thereby to generate a flow of air into the inlet 33 and through the filter 10 for removal of particulate matter from the air flow. Subsequently, the collected particulate matter, enclosed in the tube 13, is compressed as it passes through the pulling means 27 prior to entering the store 26.
  • the pulling means 27 comprises an endless belt 40 which runs around two reversing rollers 41,42, and a plate 43 arranged so that the filter-web tube 13 passes between it and one run of the belt 40, the plate being resiliently biased so as to press the tube against the belt and to permit any large pieces of material picked up by the cleaner to pass between the plate and the belt into the store 26.
  • the roller 41 is a drive roller driven by an electric motor 44 and the roller 42 is an idler roller.
  • the belt is made of rubber or other suitable material and its outer surface is formed with serrations or ribs so that it can exert an effective pulling force on the tube 13.
  • An automatic differential-pressure sensitive actuating means 45 is provided to control energisation of the motor 44.
  • the plate 43 is made of a resiliently deformable, low friction plastics material, for example polypropylene, and is of generally inverted U-shape, one limb being attached to a mounting 46 on inner housing 25 and the other limb acting, in use, to press the tube 13 against the belt 40.
  • a low friction material is used for the plate 43 the tube 13 easily slips over it .
  • the second embodiment shown in FIGURE 3 differs from the first embodiment shown in FIGURE 2, in that the plate 43 which may be made of a similar material, is of curved form and is urged by a differential pressure thrust device
  • the device 47 towards the belt 40 with a force which varies with the difference between atmospheric pressure and the pressure inside the housing 25.
  • the device 47 comprises a chamber
  • the actuating means 45 responds to an increase to a predetermined level in the difference between the pressure in the housing 25 and the pressure in the flow space 37 caused by particulate matter deposited on the exposed inside surface of the roll 11 creating resistance to the flow of fluid through the roll, to switch on the motor 44, and responds when said difference falls below said level caused by a fresh portion of the roll being exposed inside the roll to switch the motor 44 off again.
  • said difference varies with the flow resistance of the filter.
  • the rate at which the tube 13 is pulled through the pulling means 27 can be varied by variation of the pressure applied by the plate 43 to the tube. Taken to one extreme, said rate could be entirely dependant upon said thrust so that the motor 44 can run continuously, thus obviating the actuating means 45.
  • the pulling means 27 comprises a drive roller 28 driven by a motor 29, a pressure roller 30 to compress the tube 13 against the drive roller 28, and automatic differential-pressure sensitive actuating means 31 which operates in the same way as the actuating means 45 to control energisation of the motor 29.
  • the fourth embodiment shown in FIGURE 5 differs from the third embodiment shown in FIGURE 4, in that the pressure roller 30 is urged by a differential pressure thrust device 38 towards the roller 28 with a force which increases with the difference between atmospheric pressure and the pressure inside the housing 25.
  • This thrust device 38 is of the same construction and operates in the same way as the thrust device 47 of the second embodiment.
  • the rate at which the tube 13 is pulled through the pulling means can be varied by varying the thrust applied to the pressure roller 30.
  • said rate could be entirely dependant upon said thrust so that the motor 29 can run continuously, thus obviating the actuating means 31.
  • the location of the suction motor and the flow path may be re-arranged so that the motor discharges air near to the inlet 33 thereby enabling the inlet and outlet return flows to be connected to the cleaning nozzle.
  • the present invention further provides a filter or filter apparatus or a suction cleaner having any novel part or feature or novel combination of functional parts or features disclosed herein or in the accompanying drawings, and functional equivalents thereof.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

L'invention concerne un filtre pouvant être intégré à un aspirateur, ce filtre comprenant un logement pour bande filtrante sous la forme d'un cylindre (11), des organes de traction présentant une courroie sans fin entraînée (40), et une plaque de coopération (43) (ou deux cylindres), fabriquée dans un matériau élastique déformable, cette plaque étant conçue pour tirer la bande depuis l'intérieur dudit cylindre sous la forme d'un tube en spirale, lequel passe entre la courroie et la plaque (ou les deux cylindres). Un fluide chargé en particules est dirigé vers l'intérieur dudit cylindre puis à l'extérieur de ce dernier, de sorte que la substance particulaire est piégée à l'intérieur du tube au moment où la bande sort du cylindre, ledit tube contenant une matière transportée par lesdits organes de traction (40, 43) vers un logement pour bande filtrante usée (26).
PCT/GB1998/003799 1997-12-24 1998-12-24 Filtres WO1999033387A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU17688/99A AU740576B2 (en) 1997-12-24 1998-12-24 Filters
EP98962551A EP1041916A1 (fr) 1997-12-24 1998-12-24 Filtres
JP2000526152A JP2001526925A (ja) 1997-12-24 1998-12-24 フィルタ
CA002319377A CA2319377A1 (fr) 1997-12-24 1998-12-24 Filtres
NO20003333A NO20003333L (no) 1997-12-24 2000-06-26 Filtre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9727165.4 1997-12-24
GBGB9727165.4A GB9727165D0 (en) 1997-12-24 1997-12-24 Filters

Publications (1)

Publication Number Publication Date
WO1999033387A1 true WO1999033387A1 (fr) 1999-07-08

Family

ID=10824112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/003799 WO1999033387A1 (fr) 1997-12-24 1998-12-24 Filtres

Country Status (8)

Country Link
EP (1) EP1041916A1 (fr)
JP (1) JP2001526925A (fr)
AU (1) AU740576B2 (fr)
CA (1) CA2319377A1 (fr)
GB (1) GB9727165D0 (fr)
NO (1) NO20003333L (fr)
TR (1) TR200002571T2 (fr)
WO (1) WO1999033387A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002002207A1 (fr) * 2000-09-29 2002-01-10 Silvester Cambal Filtre a air pour moteur thermique
GB2399491A (en) * 2003-02-28 2004-09-22 Hoover Co Filter for floor care appliance
DE102010030898A1 (de) * 2010-07-02 2012-01-05 BSH Bosch und Siemens Hausgeräte GmbH Staubsammelsystem für Staubsauger
GB2507183A (en) * 2012-10-18 2014-04-23 Bissell Homecare Inc Vacuum cleaner with filter cartridge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322387A2 (fr) * 1987-12-21 1989-06-28 Aktiebolaget Electrolux Aspirateur de poussières

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322387A2 (fr) * 1987-12-21 1989-06-28 Aktiebolaget Electrolux Aspirateur de poussières

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002002207A1 (fr) * 2000-09-29 2002-01-10 Silvester Cambal Filtre a air pour moteur thermique
GB2399491A (en) * 2003-02-28 2004-09-22 Hoover Co Filter for floor care appliance
GB2399491B (en) * 2003-02-28 2007-01-31 Hoover Co Filter for floor care appliance
US7332005B2 (en) 2003-02-28 2008-02-19 The Hoover Company Filtration bag replacement system for a floor care appliance
DE102010030898A1 (de) * 2010-07-02 2012-01-05 BSH Bosch und Siemens Hausgeräte GmbH Staubsammelsystem für Staubsauger
DE102010030898B4 (de) * 2010-07-02 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Staubsammelsystem für Staubsauger
GB2507183A (en) * 2012-10-18 2014-04-23 Bissell Homecare Inc Vacuum cleaner with filter cartridge
US8991003B2 (en) 2012-10-18 2015-03-31 Bissell Homecare, Inc. Vacuum cleaner with filter cartridge
GB2507183B (en) * 2012-10-18 2015-09-16 Bissell Homecare Inc Vacuum cleaner with filter cartridge

Also Published As

Publication number Publication date
NO20003333L (no) 2000-08-01
JP2001526925A (ja) 2001-12-25
TR200002571T2 (tr) 2000-11-21
AU1768899A (en) 1999-07-19
EP1041916A1 (fr) 2000-10-11
NO20003333D0 (no) 2000-06-26
CA2319377A1 (fr) 1999-07-08
GB9727165D0 (en) 1998-02-25
AU740576B2 (en) 2001-11-08

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