EP2078488A2 - Dispositif destiné à la séparation de poussière d'air chargé en poussière, notamment en vue de l'utilisation dans un aspirateur - Google Patents

Dispositif destiné à la séparation de poussière d'air chargé en poussière, notamment en vue de l'utilisation dans un aspirateur Download PDF

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Publication number
EP2078488A2
EP2078488A2 EP08021146A EP08021146A EP2078488A2 EP 2078488 A2 EP2078488 A2 EP 2078488A2 EP 08021146 A EP08021146 A EP 08021146A EP 08021146 A EP08021146 A EP 08021146A EP 2078488 A2 EP2078488 A2 EP 2078488A2
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EP
European Patent Office
Prior art keywords
dust
inlet
outlet
container
air
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
Application number
EP08021146A
Other languages
German (de)
English (en)
Other versions
EP2078488A3 (fr
EP2078488B1 (fr
Inventor
Andre Bertram
Stefan Tiekötter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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.)
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Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP2078488A2 publication Critical patent/EP2078488A2/fr
Publication of EP2078488A3 publication Critical patent/EP2078488A3/fr
Application granted granted Critical
Publication of EP2078488B1 publication Critical patent/EP2078488B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608—Cyclonic chamber constructions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/165—Construction of inlets
    • 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
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/081—Shapes or dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

Definitions

  • the invention relates to a device for separating dust from dust-laden air, in particular for use in a vacuum cleaner, in the form of a cyclone separator, in which the air is supplied to an at least approximately rotationally symmetrical container via a tangentially arranged inlet and after flowing through a dust collection chamber an axially disposed outlet is discharged.
  • dust control systems are used, which are usually arranged between the air inlet of a dust collection chamber and the suction side of a fan and hold back the absorbed dust before entering the fan.
  • the best known variant is a bag shaped filter which is internally pressurized, d. h., the dust settles inside the bag.
  • the bag is usually still downstream of a fine dust filter, which receives dust particles in the order of less than 2 microns, which pass through the bag. The removal of this dust content from the room air wins with the increasing number of people with allergies in importance, as these particles are respirable because of their small size and therefore lead to a health burden.
  • the bag When reaching the maximum capacity, which is about 400 grams, the bag must be replaced, this can be hygienic especially with closable bags, as the dust remains in the bag and is disposed of with this. Such replacement is required several times a year, depending on usage, and incurs costs. Also, the fine dust filter must be replaced after a certain period of use, but here are the intervals because of the small amount of fine dust larger, from the manufacturers, a replacement after about a year is recommended. Because of the small particle sizes, a small proportion by mass of fine dust is produced, which is why commercially available fine dust filters have a capacity of about 10 grams.
  • a dust binder is added to the second fraction, in which the majority of the dust particles have a size between 30 .mu.m and 200 .mu.m. It may then be advantageous if directed air swirling takes place in the sump that receives this second fraction to mix dust particles and dust binder.
  • Such Gutverwirbelung does not take place in the dust collector of the above inertia separator.
  • the invention thus raises the problem to disclose a device for separating dust from dust-laden air, which is based on the one hand on the principle of the cyclone separator and therefore causes turbulence of the dust particles in the dust collector and in which on the other hand, the separation limit far beyond the particle size of respirable particulate matter (less than 2 ⁇ m).
  • the container is designed such that the flow velocity of the air flow in the inflow region of the outlet is less than in the region of the inlet. This ensures that only large particles remain in the dust collection chamber.
  • FIG. 1 shows a tangential flowed cyclone separator of conventional design. This is constructed from an at least approximately rotationally symmetrical, here cylindrical container 1 and has a tangentially arranged inlet 2, via which the air is supplied, and an axially arranged outlet in the form of a protruding into the container 1 dip tube 2.
  • the lower part of the container which is traversed by the dust-laden air on the way from the inlet 2 to the outlet 3, acts as a dust collecting chamber. 4
  • the air passes at an inlet velocity v E through the inlet 2 into the container 1 on a circular path with the radius r E , which corresponds to the average distance of the inlet 2 from the symmetry axis 5 of the container 1.
  • an air vortex is generated with the angular momentum L, which is proportional to the product of inlet radius and velocity: L ⁇ v e ⁇ r e
  • r E is always significantly larger than r T ; usually two to four times. This means, however, that the tangential velocity v T on the dip tube 3 Also, two to four times higher than the inlet velocity v E at the inlet 2.
  • the centrifugal acceleration a T on the dip tube is crucial, applies to the applies a T ⁇ v T 2
  • the centrifugal acceleration is therefore increased by a factor of 4 - 16.
  • the separation limit of these cyclone separators is in the order of 1 micron for the existing in household vacuum cleaner blower power in the range of 1500 to 2200 watts.
  • the in FIG. 2 shown separator avoids these disadvantages by not accelerating the air flowing into the dust collecting chamber 14 in the lower part of the container 11 air, but slows down.
  • the radius r T2 of the dip tube 13 is greater than the mean distance r E2 of the inlet 12 from the axis of symmetry 15.
  • the air enters the container at the inlet velocity v E with a very small radius r E2 .
  • the container 11 and the dip tube 13 widen in a funnel shape.
  • the radius of the vortex generated in the inlet region is increased toward the inflow region of the dip tube 13, and therefore the flow velocity of the air flow is decelerated due to the angular momentum conservation law and the wall friction.
  • tangential velocity v T2 is then reduced by at least a factor of 10 in comparison with conventional cyclone separators with tangential flow. This not only minimizes pressure loss and noise, but also shifts the cut-off to 20-30 ⁇ m. In the dust collector 14 therefore no particulate matter remains and it can be emptied without dust.
  • FIG. 3 shows in longitudinal section a separator, in which by an advantageous embodiment of the dip tube 13, the separation of fine dust is further improved.
  • the inflow region of the dip tube 13 is surrounded by a grid 16 which has a closed bottom 17.
  • the grid-shaped structure fulfills two Functions: It even out the flow that enters the dip tube 13 and thus improves the selectivity of the cyclone separator. In addition, it acts as a protection for a downstream fine filter (not shown). In case of malfunction (eg cyclone clogged or improperly closed bottom flap 18) otherwise larger amounts of coarse dirt could get into the fine filter and clog it. Both functions could be realized by the grid 16 shown, but also by a screen structure or a perforated plate.
  • the grid arrangement has the advantage that it is easier to clean. Not only in the event of malfunctions, but also in normal operation, fibers can occasionally get caught in the flow straightener.
  • the original cyclone vortex is only slightly hindered by the internals 20 and 21, since they are rotationally symmetric. Therefore, it is present even in the collection area in a weakened form and can be used to mix the deposited dust with a binder.
  • Ring 20 and baffle plate 21 are shown here in interaction, but they also reduce individually already the vertical component of the secondary flow 19th

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Cyclones (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
EP08021146.9A 2008-01-14 2008-12-05 Dispositif destiné à la séparation de poussière d'air chargé en poussière, notamment en vue de l'utilisation dans un aspirateur Not-in-force EP2078488B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008004393A DE102008004393B3 (de) 2008-01-14 2008-01-14 Vorrichtung zum Abscheiden von Staub aus staubbeladener Luft, insbesondere zur Verwendung in einem Staubsauger

Publications (3)

Publication Number Publication Date
EP2078488A2 true EP2078488A2 (fr) 2009-07-15
EP2078488A3 EP2078488A3 (fr) 2011-06-01
EP2078488B1 EP2078488B1 (fr) 2014-02-26

Family

ID=40404277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08021146.9A Not-in-force EP2078488B1 (fr) 2008-01-14 2008-12-05 Dispositif destiné à la séparation de poussière d'air chargé en poussière, notamment en vue de l'utilisation dans un aspirateur

Country Status (3)

Country Link
US (1) US20090178378A1 (fr)
EP (1) EP2078488B1 (fr)
DE (1) DE102008004393B3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2436308A (en) * 2006-03-23 2007-09-26 Adrian Christopher Arnold Particle separator
GB2455535A (en) * 2007-12-12 2009-06-17 Prime Sourcing Ltd Cyclone chamber with vortex shield
US8651828B2 (en) * 2008-09-12 2014-02-18 Gregory S. Sundheim Vacuum pump with combined debris catcher and pressure relief valve
JP4941540B2 (ja) * 2009-11-27 2012-05-30 パナソニック株式会社 サイクロン式集塵装置およびこれを備えた電気掃除機
JP4941541B2 (ja) * 2009-11-27 2012-05-30 パナソニック株式会社 サイクロン式集塵装置およびこれを備えた電気掃除機
US8152877B2 (en) * 2010-03-12 2012-04-10 Euro-Pro Operating Llc Shroud for a cleaning service apparatus
GB2485251B (en) * 2010-11-04 2013-03-20 Aker Process Systems As Method for separating gas and liquid and cyclone separators therefore

Citations (4)

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Publication number Priority date Publication date Assignee Title
EP0647114B1 (fr) 1992-06-24 1997-03-26 Notetry Limited Aspirateur a cyclone
DE19911331C1 (de) 1999-03-15 2000-05-31 Hartmut J Schneider Staubsaugerbeutel
EP1179312A2 (fr) 2000-08-07 2002-02-13 Hoover Limited Aspirateur de poussières
WO2007022959A2 (fr) 2005-08-26 2007-03-01 Miele & Cie. Kg Procede pour traiter la poussiere et dispositifs pour executer un tel procede

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DE8006245U1 (de) * 1980-03-07 1980-05-29 Bergische Industriewartung Kreutzfeldt & Gregor Gmbh & Co Kg, 5067 Kuerten Industriestaubsauger
US5287591A (en) * 1992-03-30 1994-02-22 Racine Industries, Inc. Carpet cleaning machine with convertible-use feature
US5558697A (en) * 1992-12-08 1996-09-24 Notetry Limited Dual cyclonic vacuum cleaner
US6171356B1 (en) * 1998-04-28 2001-01-09 Frank Twerdun Cyclonic vacuum generator apparatus and method
US6558453B2 (en) * 2000-01-14 2003-05-06 White Consolidated Industries, Inc. Bagless dustcup
KR100412584B1 (ko) * 2001-06-02 2003-12-31 삼성광주전자 주식회사 진공청소기용 사이클론 집진장치의 그릴 조립체
US6810557B2 (en) * 2002-01-28 2004-11-02 Bissell Homecare, Inc. Cyclone separator with vacillating debris inhibitor
CN1279869C (zh) * 2002-04-28 2006-10-18 苏州金莱克清洁器具有限公司 吸尘器减速离心除尘装置
KR100468108B1 (ko) * 2002-11-21 2005-01-26 삼성광주전자 주식회사 그릴 조립체 및 이를 구비하는 진공청소기용 사이클론집진장치
KR100536504B1 (ko) * 2003-09-09 2005-12-14 삼성광주전자 주식회사 사이클론 분리장치 및 이를 구비한 진공청소기
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WO2008011797A1 (fr) * 2006-07-21 2008-01-31 Wang, Yuedan Vide-poussière secondaire à séparation cyclonique pour aspirateur
DE102006046328B4 (de) * 2006-09-28 2008-06-19 Miele & Cie. Kg Vorrichtung zum Abscheiden von Staub aus staubbeladener Luft, insbesondere zur Verwendung in einem Staubsauger
KR101309781B1 (ko) * 2007-04-24 2013-09-23 삼성전자주식회사 진공청소기의 멀티 사이클론 집진장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0647114B1 (fr) 1992-06-24 1997-03-26 Notetry Limited Aspirateur a cyclone
DE19911331C1 (de) 1999-03-15 2000-05-31 Hartmut J Schneider Staubsaugerbeutel
EP1179312A2 (fr) 2000-08-07 2002-02-13 Hoover Limited Aspirateur de poussières
WO2007022959A2 (fr) 2005-08-26 2007-03-01 Miele & Cie. Kg Procede pour traiter la poussiere et dispositifs pour executer un tel procede

Also Published As

Publication number Publication date
EP2078488A3 (fr) 2011-06-01
EP2078488B1 (fr) 2014-02-26
US20090178378A1 (en) 2009-07-16
DE102008004393B3 (de) 2009-07-16

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