WO2008065404A2 - Vacuum cleaner filter assembly - Google Patents

Vacuum cleaner filter assembly Download PDF

Info

Publication number
WO2008065404A2
WO2008065404A2 PCT/GB2007/004577 GB2007004577W WO2008065404A2 WO 2008065404 A2 WO2008065404 A2 WO 2008065404A2 GB 2007004577 W GB2007004577 W GB 2007004577W WO 2008065404 A2 WO2008065404 A2 WO 2008065404A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
vacuum cleaner
assembly
conduit
previous
Prior art date
Application number
PCT/GB2007/004577
Other languages
French (fr)
Other versions
WO2008065404A3 (en
Inventor
Michael Tony Mailes
Original Assignee
Scotcan 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 Scotcan Limited filed Critical Scotcan Limited
Publication of WO2008065404A2 publication Critical patent/WO2008065404A2/en
Publication of WO2008065404A3 publication Critical patent/WO2008065404A3/en

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
    • A47L9/12—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
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • 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
    • 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

Definitions

  • the present invention relates to improvements to vacuum cleaner filters and in particular to vacuum cleaner filters for mounting in vacuum cleaner dust chambers.
  • Vacuum cleaners such as hover vacuum cleaners may be designed to have filters inside the dust chamber so as to improve the compactness and/or weight distribution in the cleaner. It is also useful to place the fine HEPA (High Efficiency Particulate Air) filter inside the chamber.
  • HEPA High Efficiency Particulate Air
  • a problem with such an arrangement is that the HEPA filter can become dirty quickly because of its proximity to the dust chamber and therefore it can require more frequent cleaning.
  • Another problem is that when it does require cleaning its removal from the dust chamber can allow dust from the chamber to come into contact with the HEPA filter surfaces. Also when removing the HEPA filter from the chamber the handling of the filter can cause dirt to be pressed into the surfaces of the filter, which makes it harder to clean. It is an object of the present invention to provide a vacuum cleaner filter assembly which allows less frequent cleaning of the fine filter and cleaning of the assembly without contaminating the fine filter.
  • a vacuum cleaner filter assembly comprising: a fine filter; a pre-filter; a conduit configured to provide fluid communication between the fine filter and the pre filter; a chamber mounting means for mounting the assembly in a vacuum cleaner dust chamber with the pre-filter in fluid communication with an outlet of the chamber via the conduit and the fine filter, wherein the pre-filter is removably secured to the assembly.
  • the conduit is configured to minimise dust contacting the conduit side of the fine filter upon removal of the pre-filter.
  • the fine filter comprises a High Efficiency Particulate Air filter.
  • the conduit comprises an intermediate filter.
  • the filter covers a portion of the conduit side of the fine filter.
  • the geometry of the conduit is configured to minimise dust contacting the conduit side of the fine filter.
  • the relative positions of the fine filter and pre-filter are configured to minimise dust contacting the conduit side of the fine filter.
  • the pre-filter is removable with the assembly mounted in the chamber.
  • the pre-filter comprises a electrostatic filter.
  • the pre-filter comprises a screen.
  • the screen comprises stainless steel.
  • the pre-filter comprises a handle for pre- filter removal.
  • the handle comprises a tab.
  • the intermediate filter comprises a fibrous filter.
  • the conduit is configured to minimise sound transmission along the conduit.
  • the assembly is configured to be removably secured to the dust chamber.
  • Figure 1 illustrates in schematic form a plan view of the filters in the filter assembly
  • Figure 2 illustrates in schematic form a partial cross section of a preferred embodiment of the filter assembly mounted in a vacuum cleaner dust chamber
  • Figure 3 illustrates in schematic form a plan view of a filter assembly
  • Figure 4 illustrates in schematic form a plan view of the opposite side of the filter assembly to that illustrated in Figure 3 ;
  • Figure 5 illustrates in schematic form a perspective view of an alternative configuration of the filter assembly
  • Figure 6 illustrates in schematic form a perspective view of the disassembled component parts of the alternative configuration of the filter assembly
  • Figure 7 illustrates in schematic form a plan view of the pre-filter of the alternative configuration of the filter assembly.
  • FIG. 1 With reference to Figure 1 there is shown a plan view of the filter assembly showing the perimeter of the filter assembly 1 and the placement of the filters in the filter assembly.
  • the cylindrical annular HEPA filter 2 is in fluid communication with the pre-filters 3B.
  • Alternatives to HEPA filters may be used as a fine filter, for example ULPA filters.
  • a conduit (not shown) contains a fibrous intermediate filter 5 and provides fluid communication between the HEPA filter and the pre-filters 3B.
  • the intermediate filter may alternatively be non-fibrous.
  • a cross section of half of the filter assembly 1 is shown along the axis A-A of Figure 1. The other half is reflected across the axis B- B.
  • the HEPA filter 2 is shown with the pre-filter 3A, 3B.
  • the pre-filter has a frame 3A that holds an electrostatic filter 3B.
  • a conduit 4 contains an intermediate filter 5.
  • the intermediate filter is configured to provide filtered fluid communication between the HEPA filter 2 and the pre-filter 3A, 3B.
  • the housing of the filter assembly in this embodiment has two components.
  • the front piece of the housing 6A has a hole for each of the two pre-filters.
  • the front piece is removably attachable to the back piece of the housing 6B by sliding the front piece into the back piece.
  • the back piece of the housing 6B acts as a chamber mounting means for removably mounting the assembly in a vacuum cleaner dust chamber 7A. This may be achieved, for example, by clipping the assembly into the dust chamber housing 7B or by push fitting the assembly onto a protrusion (not shown) around the outlet 8 of the dust chamber.
  • the assembly 1 is shown mounted in the dust chamber 7A such that the pre-filter is in fluid communication with the outlet 8 of the chamber via the conduit and HEPA filter.
  • the pre-filter 3A, 3B is removable from the filter assembly and the conduit is configured to prevent dust contacting the conduit side of the HEPA filter upon removal of the pre-filter.
  • this is achieved by having the intermediate filter extending around the conduit-facing side of the HEPA filter.
  • the configuration of the conduit in this embodiment also provides separation of the HEPA filter from the dust chamber around a bend so that even in the absence of the intermediate filter there is protection of the HEPA filter from dust in the dust chamber while the pre-filters are removed.
  • the pre-filters shown with a stainless steel mesh 9, are also provided with a tab 10 to aid their removal from the " filter assembly.
  • a user would typically first remove caked dust from the pre-filters by tipping the dust chamber containing the filter assembly and tapping it or the filter assembly so that dust falls off the mesh 9 into the dust chamber. Then the user would remove the pre-filters using the tabs 10 provided that act as handles for pre-filter removal.
  • a user may be provided with a spare set of pre-filters. The user would then insert the spare pre-filters and clean the dirty pre-filters using the vacuum cleaner itself with, for example, a hose attachment.
  • dirty air from within the dust chamber flows 11 through the pre-filter then through the conduit and via the HEPA filter through the air outlet 8. In this way filtered air 12 is extracted from the filter assembly and out of the dust chamber.
  • Figure 3 shows a plan view of the top of the filter assembly with numbers as described with reference to figures 1 and 2.
  • Figure 4 shows a bottom view of the filter assembly with the same numbering as described with reference to figures 1 and 2.
  • the hole 6c is aligned with the dust chamber outlet 8 (not shown) when the filter assembly is mounted in the dust chamber.
  • FIG. 5 to 7 an alternative configuration of the filter assembly is shown with the same labels as in Figures 1 to 4.
  • two planar HEPA filters are used, rather than a cylindrical HEPA filter, and the two filters are retained in slots defined by walls 13 protruding from the inner surface of the rear piece of the housing 6B.
  • the front piece of the housing 6A has a moulded plastic mesh 14 to retain the pre-filter 3B (not shown) that is sandwiched between the outer mesh 9 and the inner mesh 14.
  • the front piece of the housing 6A also has recesses 15 to accommodate each secondary tab 1OB when the pre- filter is mounted.
  • the plastic moulded pre-filter frame 3A is different to that shown in Figures 1 to 4 in that it integrates as a single piece a plastic moulded screen 9, rather than having a separate stainless steel mesh. Also, there is a secondary tab 1OB moulded as part of the pre-filter frame 3A, which acts as a handle for removing the pre-filter frame 3A from the front piece of the housing 6A. The user can push their finger under the tab 1OB into the recess 15 to prise the pre-filter away from the front piece of the housing 6A.
  • a HEPA filter can be mounted inside a dust chamber and kept clean so that it requires less frequent cleaning, typically by washing. Such wet cleaning does not fully clean the HEPA filter, and can leave the HEPA filter less efficient. Therefore the HEPA filter is kept dry and free of dirt in the present invention.
  • the present invention also allows cleaning of in-chamber filters in a way that is both convenient and does not contaminate the HEPA filter.
  • a further advantage of the present invention is that the intermediate filter of the conduit provides good sound absorption. For example tests have shown that at a distance of two metres the sound level is reduced from 84 decibels to 70 decibels by inserting the intermediate filter into the conduit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A vacuum cleaner filter assembly (1) for mounting in a vacuum cleaner dust chamber (7B) has a HEPA (High Efficiency Particulate Air) filter (2), and a pre-filter (3A) removably secured to the assembly, using a pull tab. A conduit (4) between the filters is configured to minimise dust contacting the conduit side of the HEPA filter (2) upon removal of the pre-filter (3B). An intermediate filter (5) in the conduit (4) provides further protection of the HEPA filter during removal and cleaning of the pre-filter and provides sound absorbtion.

Description

Vacuum cleaner filter assembly
The present invention relates to improvements to vacuum cleaner filters and in particular to vacuum cleaner filters for mounting in vacuum cleaner dust chambers.
Vacuum cleaners such as hover vacuum cleaners may be designed to have filters inside the dust chamber so as to improve the compactness and/or weight distribution in the cleaner. It is also useful to place the fine HEPA (High Efficiency Particulate Air) filter inside the chamber. A problem with such an arrangement is that the HEPA filter can become dirty quickly because of its proximity to the dust chamber and therefore it can require more frequent cleaning. Another problem is that when it does require cleaning its removal from the dust chamber can allow dust from the chamber to come into contact with the HEPA filter surfaces. Also when removing the HEPA filter from the chamber the handling of the filter can cause dirt to be pressed into the surfaces of the filter, which makes it harder to clean. It is an object of the present invention to provide a vacuum cleaner filter assembly which allows less frequent cleaning of the fine filter and cleaning of the assembly without contaminating the fine filter.
According to the first aspect of the present invention there is provided a vacuum cleaner filter assembly comprising: a fine filter; a pre-filter; a conduit configured to provide fluid communication between the fine filter and the pre filter; a chamber mounting means for mounting the assembly in a vacuum cleaner dust chamber with the pre-filter in fluid communication with an outlet of the chamber via the conduit and the fine filter, wherein the pre-filter is removably secured to the assembly.
Preferably, the conduit is configured to minimise dust contacting the conduit side of the fine filter upon removal of the pre-filter.
Preferably the fine filter comprises a High Efficiency Particulate Air filter.
Preferably the conduit comprises an intermediate filter.
Preferably the filter covers a portion of the conduit side of the fine filter. Preferably, the geometry of the conduit is configured to minimise dust contacting the conduit side of the fine filter.
Preferably, the relative positions of the fine filter and pre-filter are configured to minimise dust contacting the conduit side of the fine filter.
Preferably the pre-filter is removable with the assembly mounted in the chamber.
Preferably the pre-filter comprises a electrostatic filter.
Preferably the pre-filter comprises a screen.
Preferably the screen comprises stainless steel.
Preferably the pre-filter comprises a handle for pre- filter removal.
Preferably the handle comprises a tab.
Preferably the intermediate filter comprises a fibrous filter.
Preferably the conduit is configured to minimise sound transmission along the conduit.
Preferably the assembly is configured to be removably secured to the dust chamber. The present invention will now be described by way of example only with reference to the following figures in which:
Figure 1 illustrates in schematic form a plan view of the filters in the filter assembly;
Figure 2 illustrates in schematic form a partial cross section of a preferred embodiment of the filter assembly mounted in a vacuum cleaner dust chamber;
Figure 3 illustrates in schematic form a plan view of a filter assembly;
Figure 4 illustrates in schematic form a plan view of the opposite side of the filter assembly to that illustrated in Figure 3 ;
Figure 5 illustrates in schematic form a perspective view of an alternative configuration of the filter assembly;
Figure 6 illustrates in schematic form a perspective view of the disassembled component parts of the alternative configuration of the filter assembly; and
Figure 7 illustrates in schematic form a plan view of the pre-filter of the alternative configuration of the filter assembly.
With reference to Figure 1 there is shown a plan view of the filter assembly showing the perimeter of the filter assembly 1 and the placement of the filters in the filter assembly. The cylindrical annular HEPA filter 2 is in fluid communication with the pre-filters 3B. Alternatives to HEPA filters may be used as a fine filter, for example ULPA filters. A conduit (not shown) contains a fibrous intermediate filter 5 and provides fluid communication between the HEPA filter and the pre-filters 3B. The intermediate filter may alternatively be non-fibrous. In use of the vacuum cleaner, air flows from the dust chamber through the pre-filter then the intermediate filter and through the HEPA filter to the outlet of the chamber which is adjacent to the HEPA filter. Typically the air is sucked through the filters by a fan driven by a motor and expelled from the vacuum cleaner.
With reference to Figure 2, a cross section of half of the filter assembly 1 is shown along the axis A-A of Figure 1. The other half is reflected across the axis B- B. The HEPA filter 2 is shown with the pre-filter 3A, 3B. The pre-filter has a frame 3A that holds an electrostatic filter 3B. A conduit 4 contains an intermediate filter 5. The intermediate filter is configured to provide filtered fluid communication between the HEPA filter 2 and the pre-filter 3A, 3B. The housing of the filter assembly in this embodiment has two components. The front piece of the housing 6A has a hole for each of the two pre-filters. The front piece is removably attachable to the back piece of the housing 6B by sliding the front piece into the back piece. This enables removal by a user of the cleaner of the intermediate and HEPA filters should they require cleaning. In this embodiment the back piece of the housing 6B acts as a chamber mounting means for removably mounting the assembly in a vacuum cleaner dust chamber 7A. This may be achieved, for example, by clipping the assembly into the dust chamber housing 7B or by push fitting the assembly onto a protrusion (not shown) around the outlet 8 of the dust chamber. The assembly 1 is shown mounted in the dust chamber 7A such that the pre-filter is in fluid communication with the outlet 8 of the chamber via the conduit and HEPA filter. The pre-filter 3A, 3B is removable from the filter assembly and the conduit is configured to prevent dust contacting the conduit side of the HEPA filter upon removal of the pre-filter. In this embodiment this is achieved by having the intermediate filter extending around the conduit-facing side of the HEPA filter. The configuration of the conduit in this embodiment also provides separation of the HEPA filter from the dust chamber around a bend so that even in the absence of the intermediate filter there is protection of the HEPA filter from dust in the dust chamber while the pre-filters are removed.
The pre-filters, shown with a stainless steel mesh 9, are also provided with a tab 10 to aid their removal from the " filter assembly. A user would typically first remove caked dust from the pre-filters by tipping the dust chamber containing the filter assembly and tapping it or the filter assembly so that dust falls off the mesh 9 into the dust chamber. Then the user would remove the pre-filters using the tabs 10 provided that act as handles for pre-filter removal. In practice a user may be provided with a spare set of pre-filters. The user would then insert the spare pre-filters and clean the dirty pre-filters using the vacuum cleaner itself with, for example, a hose attachment. In use of the vacuum cleaner, dirty air from within the dust chamber flows 11 through the pre-filter then through the conduit and via the HEPA filter through the air outlet 8. In this way filtered air 12 is extracted from the filter assembly and out of the dust chamber.
Figure 3 shows a plan view of the top of the filter assembly with numbers as described with reference to figures 1 and 2.
Figure 4 shows a bottom view of the filter assembly with the same numbering as described with reference to figures 1 and 2. The hole 6c is aligned with the dust chamber outlet 8 (not shown) when the filter assembly is mounted in the dust chamber.
With reference to Figures 5 to 7, an alternative configuration of the filter assembly is shown with the same labels as in Figures 1 to 4. In this configuration, two planar HEPA filters are used, rather than a cylindrical HEPA filter, and the two filters are retained in slots defined by walls 13 protruding from the inner surface of the rear piece of the housing 6B.
The front piece of the housing 6A has a moulded plastic mesh 14 to retain the pre-filter 3B (not shown) that is sandwiched between the outer mesh 9 and the inner mesh 14. The front piece of the housing 6A also has recesses 15 to accommodate each secondary tab 1OB when the pre- filter is mounted.
The plastic moulded pre-filter frame 3A is different to that shown in Figures 1 to 4 in that it integrates as a single piece a plastic moulded screen 9, rather than having a separate stainless steel mesh. Also, there is a secondary tab 1OB moulded as part of the pre-filter frame 3A, which acts as a handle for removing the pre-filter frame 3A from the front piece of the housing 6A. The user can push their finger under the tab 1OB into the recess 15 to prise the pre-filter away from the front piece of the housing 6A.
The advantages of the present invention are that a HEPA filter can be mounted inside a dust chamber and kept clean so that it requires less frequent cleaning, typically by washing. Such wet cleaning does not fully clean the HEPA filter, and can leave the HEPA filter less efficient. Therefore the HEPA filter is kept dry and free of dirt in the present invention. The present invention also allows cleaning of in-chamber filters in a way that is both convenient and does not contaminate the HEPA filter.
A further advantage of the present invention is that the intermediate filter of the conduit provides good sound absorption. For example tests have shown that at a distance of two metres the sound level is reduced from 84 decibels to 70 decibels by inserting the intermediate filter into the conduit.
Further modifications may be made without departing from the scope of the invention herein intended.

Claims

Claims
1. A vacuum cleaner filter assembly comprising: a fine filter; a pre-filter; a conduit configured to provide fluid communication between the fine filter and the pre filter; a chamber mounting means for mounting the assembly in a vacuum cleaner dust chamber with the pre-filter in fluid communication with an outlet of the chamber via the conduit and the fine filter, wherein the pre-filter is removably secured to the assembly.
2. The vacuum cleaner filter assembly of claim 1 wherein the conduit is configured to minimise dust contacting the conduit side of the fine filter upon removal of the pre-filter.
3. The vacuum cleaner filter assembly of claim 1 or claim 2 wherein the fine filter comprises a High Efficiency Particulate Air filter.
4. The vacuum cleaner filter assembly of any previous claim wherein the conduit comprises an intermediate filter.
5. The vacuum cleaner filter assembly of any previous claim wherein the filter covers a portion of the conduit side of the fine filter.
6. The vacuum cleaner filter assembly of any previous claim wherein the geometry of the conduit is configured to minimise dust contacting the conduit side of the fine filter.
7. The vacuum cleaner filter assembly of any previous claim wherein the relative positions of the fine filter and pre-filter are configured to minimise dust contacting the conduit side of the fine filter.
8. The vacuum cleaner filter assembly of any previous claim wherein the pre-filter is removable with the assembly mounted in the chamber.
9. The vacuum cleaner filter assembly of any previous claim wherein the pre-filter comprises a electrostatic filter.
10. The vacuum cleaner filter assembly of any previous claim wherein the pre-filter comprises a screen.
11. The vacuum cleaner filter assembly of claim 10 wherein the screen comprises stainless steel.
12. The vacuum cleaner filter assembly of any previous claim wherein the pre-filter comprises a handle for pre-filter removal.
13. The vacuum cleaner filter assembly of claim 12 wherein the handle comprises a tab.
14. The vacuum cleaner filter assembly of any of claims 4 to 13 wherein the intermediate filter comprises a fibrous filter.
15. The vacuum cleaner filter assembly of any previous claim wherein the conduit is configured to minimise sound transmission along the conduit.
16. The vacuum cleaner filter assembly of any previous claim wherein the assembly is configured to be removably secured to the dust chamber.
PCT/GB2007/004577 2006-11-29 2007-11-29 Vacuum cleaner filter assembly WO2008065404A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0623831A GB0623831D0 (en) 2006-11-29 2006-11-29 Vacuum cleaner filter assembly
GB0623831.5 2006-11-29

Publications (2)

Publication Number Publication Date
WO2008065404A2 true WO2008065404A2 (en) 2008-06-05
WO2008065404A3 WO2008065404A3 (en) 2008-07-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/004577 WO2008065404A2 (en) 2006-11-29 2007-11-29 Vacuum cleaner filter assembly

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GB (1) GB0623831D0 (en)
WO (1) WO2008065404A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8161599B2 (en) 2008-06-05 2012-04-24 Bissell Homecare, Inc. Cyclonic vacuum cleaner with improved filter cartridge
WO2019011429A1 (en) 2017-07-12 2019-01-17 Alfred Kärcher SE & Co. KG Suction appliance with at least two filters, and method for operating a suction appliance
EP3517011A1 (en) * 2018-01-25 2019-07-31 BSH Hausgeräte GmbH Filter assembly for reducing noise for a vacuum cleaner

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0929356B1 (en) * 1997-02-18 2006-11-29 David J. Korman Personal air filtering and delivery systems
US6090184A (en) * 1998-02-27 2000-07-18 Hmi Industries, Inc. Filter system
US6174350B1 (en) * 1999-04-23 2001-01-16 Rexair, Inc. Vacuum cleaner
EP1239760B1 (en) * 1999-12-22 2003-10-22 Dyson Limited A filter assembly
KR100377015B1 (en) * 2000-08-07 2003-03-26 삼성광주전자 주식회사 Cyclone dust-collecting apparatus for Vacuum Cleaner
US6613129B2 (en) * 2001-06-22 2003-09-02 Euro-Pro Corporation Cyclone and dust filter vacuum cleaner
KR100485705B1 (en) * 2003-02-21 2005-04-28 삼성광주전자 주식회사 Dust collecting container for vacuum cleaner
WO2005041739A1 (en) * 2003-10-22 2005-05-12 Bissell Homecare, Inc. Vacuum cleaner with cyclonic dirt separation and bottom discharge dirt cup with filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8161599B2 (en) 2008-06-05 2012-04-24 Bissell Homecare, Inc. Cyclonic vacuum cleaner with improved filter cartridge
WO2019011429A1 (en) 2017-07-12 2019-01-17 Alfred Kärcher SE & Co. KG Suction appliance with at least two filters, and method for operating a suction appliance
EP3517011A1 (en) * 2018-01-25 2019-07-31 BSH Hausgeräte GmbH Filter assembly for reducing noise for a vacuum cleaner

Also Published As

Publication number Publication date
WO2008065404A3 (en) 2008-07-17
GB0623831D0 (en) 2007-01-10

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