WO2012031077A1 - Aspirateur avec tube d'évacuation à section transversale croissante - Google Patents

Aspirateur avec tube d'évacuation à section transversale croissante Download PDF

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Publication number
WO2012031077A1
WO2012031077A1 PCT/US2011/050144 US2011050144W WO2012031077A1 WO 2012031077 A1 WO2012031077 A1 WO 2012031077A1 US 2011050144 W US2011050144 W US 2011050144W WO 2012031077 A1 WO2012031077 A1 WO 2012031077A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
vacuum cleaner
chamber
wall
diameter
Prior art date
Application number
PCT/US2011/050144
Other languages
English (en)
Inventor
Sergey V. Makarov
Douglas M. Rukavina
Original Assignee
Techtronic Floor Care Technology 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 Techtronic Floor Care Technology Limited filed Critical Techtronic Floor Care Technology Limited
Priority to JP2013527305A priority Critical patent/JP2013536736A/ja
Priority to AU2011295880A priority patent/AU2011295880A1/en
Priority to GB1303087.9A priority patent/GB2495894A/en
Priority to CN2011800525610A priority patent/CN103327867A/zh
Priority to BR112013004940A priority patent/BR112013004940A2/pt
Priority to MX2013002411A priority patent/MX2013002411A/es
Publication of WO2012031077A1 publication Critical patent/WO2012031077A1/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
    • 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

Definitions

  • the present invention relates to dirt cups for vacuum cleaners, and more particularly to exhaust tubes for cyclonic separation chambers.
  • Cyclonic separation is a common method of separating dirt and debris from an airflow being sucked up or vacuumed by a vacuum cleaner. Cyclonic separation takes place within a cyclonic chamber. An air intake leading to the cyclonic chamber initiates a swirling or cyclonic airflow within the cyclonic chamber. Dirt and debris are directed in a radially outward direction thereby separating from the relatively cleaner air which is removed from the cyclonic chamber from a radially inward position. In some vacuums, the air is removed by an exhaust tube that extends downwardly from the top of the cyclonic chamber and along the central axis of the cyclonic chamber.
  • the present invention provides, in one aspect, a vacuum cleaner including a cyclonic chamber, a filter chamber, and an exhaust tube.
  • the cyclonic chamber includes an inlet for introducing airflow for circulation around a central axis of the cyclonic chamber.
  • the filter chamber is positioned downstream of the cyclonic chamber and includes a wall.
  • the filter is positioned in the filter chamber.
  • the exhaust tube extends along the central axis into the cyclonic chamber and includes an inlet portion receiving the airflow from the cyclonic chamber and an outlet portion directing the airflow toward the filter chamber and the filter, which is in close proximity to the outlet portion.
  • the cross-sectional area of the outlet portion increases in the downstream direction to reduce the speed of the airflow passing into the filter chamber and to evenly distribute the airflow passing through the outlet opening across the filter.
  • the present invention provides, in another aspect, a vacuum cleaner including a housing having a central axis and an outer wall extending from a first end to a second end.
  • the outer wall defines an air inlet between the first end and the second end.
  • a lid assembly is selectively, movably coupled to the first end.
  • the housing and lid assembly at least partially define a dirt collection chamber.
  • a shroud is disposed within the housing.
  • the shroud and the outer wall at least partially define a first cyclonic separation region.
  • a cyclone body is at least partially disposed within the shroud and at least partially defines a second cyclonic separation region.
  • An exhaust tube is coupled to the second end.
  • the exhaust tube includes an inlet portion and an outlet portion.
  • the inlet portion extends into and receives air from the second cyclonic separation region.
  • the inlet portion has a substantially uniform cross sectional area.
  • the outlet portion is downstream of the inlet portion, and has an increasing cross-sectional area in the downstream direction.
  • a cover member is coupled to the exhaust assembly downstream of the outlet portion.
  • the cover member and exhaust assembly define filter chamber.
  • a filter member is disposed in the filter chamber and separated from the exhaust assembly outlet portion by an air gap. The filter member receives a substantially evenly distributed airflow from the exhaust assembly outlet portion.
  • FIG. 1 is a perspective view of a vacuum cleaner.
  • FIG. 2 is an exploded view of a dirt cup assembly of the vacuum cleaner of FIG.
  • FIG. 3 is a side view of the dirt cup assembly of FIG. 2.
  • FIG. 4 is a sectional view of a portion of the dirt cup assembly along line 4-4 of
  • FIG. 1 Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
  • FIG. 1 illustrates a vacuum cleaner 10 that includes a dirt cup assembly 12 detachably secured to a body 14, a foot 16 including a suction nozzle 18, a handle 20, and a suction source 22.
  • the suction source 22 can be a motor and fan assembly or other suitable structure for creating a vacuum.
  • the vacuum cleaner 10 is shown as an upright cyclonic vacuum cleaner. Alternatively, the vacuum cleaner 10 can be of other types, including a canister vacuum cleaner, a central vacuum cleaner, and a hand held vacuum cleaner.
  • the dirt cup assembly 12 includes a cylindrical container 24, a cover 26, a cover insert 28, a filter 30, an exhaust tube 32, a cyclone assembly 34, and a bottom lid 36.
  • the container 24 includes an open top end 38, an open bottom end 40, an interior surface 42, an exterior surface 44, a tangential air inlet 46, a lever 48, and a locking lip 50 formed by a locking aperture 52 extending into the container 24.
  • the lever 48 includes an actuator 54 and slides along a track 56 formed on the exterior surface.
  • a spring 58 biases the lever toward the top end 38.
  • the container 24 is made of substantially transparent plastic.
  • the container 24 can be other shapes.
  • the cover 26 is detachably secured to the container 24 at the top end 38.
  • the cover 26 is secured by a twist-lock or other suitable relationship between the cover 26 and the container 24.
  • the cover 26 includes a handle 60 and a release switch 62 with a locking protrusion 64.
  • the release switch 62 detachably secures the dirt cup assembly 12 to the body 14.
  • the locking protrusion 64 engages a corresponding locking lip (not shown) on the body 12 when the release switch 62 is in a locked position. In an unlocked position, the locking protrusion 64 does not engage the locking lip, thereby allowing the dirt cup assembly 12 to be detached from the body 14.
  • the cover 26 is coupled to the cover insert 28 which includes fins 66 that project downwardly away from the cover 26 to contact the top surface of the filter 30.
  • the cover 26 also defines an air outlet 68 that exits the cover 26 and leads to the motor and fan assembly 22.
  • the exhaust tube 32 is coupled to the open top end 38 of the container 24 and projects into the cyclone assembly along a central axis A of the cyclone assembly 34.
  • the exhaust tube 32 includes an inlet portion 70 for receiving the airflow from the cyclonic chamber and an outlet portion 72 for directing the airflow toward the filter 30, which is disposed in close proximity to the outlet portion 72.
  • the inlet portion 70 includes a flow straightener in the form of intersecting vanes that assists in reducing turbulence of the airflow passing into the exhaust tube 32.
  • the cross-sectional area of the outlet portion increases in the downstream direction to reduce the speed of the airflow passing into the filter 30 and to evenly distribute the airflow passing through the outlet opening across the filter 30.
  • the exhaust tube 32 defines a substantially constant diameter Dl over a portion of its length.
  • the outlet portion 72 is defined by an arcuate wall rotated about the central axis A.
  • the arcuate wall defines a radius R, which is at least 15% of the diameter Dl . In some embodiments, the radius R is between 15% and 50% of the diameter Dl, and in yet other embodiments, the radius R is between 15% and 25% of the diameter Dl .
  • the outlet portion 72 increases from the diameter Dl to an outlet opening 74 having a diameter D2 on an upper wall 76 of the exhaust tube 32.
  • the outlet opening diameter D2 is approximately twice the diameter Dl .
  • the exhaust tube 32 also includes an upwardly extending sidewall 78 disposed on the upper wall 76.
  • a perimeter 80 of the filter 30 is supported by the sidewall 78 such that a gap 82 is provided between the upper wall 76 and a bottom of the filter 30.
  • the gap 82 has a distance D3 of at least 5% of the diameter Dl and less than 5 times the diameter Dl .
  • a filter chamber 84 is positioned downstream of the cyclonic chamber and is defined by the upper wall 76 of the exhaust tube 32 (i.e., the bottom wall of the filter chamber 84), the sidewall 78 of the exhaust tube 32 (i.e., the sidewall of the filter chamber 84), and the cover insert 28 (i.e., the top wall of the filter chamber 84).
  • the filter 30 is positioned in the filter chamber 84.
  • the exhaust tube 32 including the flow straightener, the upper wall 76, and the sidewall 78 is integrally formed as a single molded component.
  • the lid 36 is pivotally connected to the container 24 by a hinge 86 located near the bottom end.
  • the lid 36 pivots about the hinge 86 between a closed position (shown in FIG. 3) and a number of open positions.
  • other hinge structures can be used to pivotally connect the lid 36 to the container 24.
  • the cyclone assembly 34 includes a frustoconical cyclone
  • the shroud 90 is secured to the container 24 at or near the top end 38.
  • the lower portion of the shroud 90 is secured to the upper portion of the tube 94.
  • the skirt 92 extends radially outward from the upper portion of the tube 94.
  • the shroud 90 includes a perforated section 96 located above the skirt 92.
  • the cyclone 88 nests within the assembly of the shroud 90, the skirt 92, and the tube 94.
  • the cyclone 88 includes an air inlet 98 and a dirt outlet 100.
  • the tube 94 includes an interior surface 102 and an exterior surface 104.
  • the cyclone assembly could include multiple cyclones arranged in series or in parallel with each other.
  • the cyclone assembly could include a single cyclone surrounding an exhaust tube with an integrally formed shroud.
  • a first dirt collection chamber is at least partially defined by the lid 36 in the closed position, the exterior surface 104 of the tube 94, and the interior surface 42 of container 24.
  • a second dirt collection chamber is at least partially defined by the lid 36 in the closed position and the interior surface 102 of the tube 94.
  • the lid 36 is secured in the closed position by a latch
  • the latch 106 In a locked position (shown in FIG. 3), the latch 106 is engaged to prevent the lid 36 from pivoting about the hinge 86. In an unlocked position, the latch 106 is not engaged and the lid 36 is free to pivot about the hinge 86.
  • the lever 48 To unlock the latch 106, the lever 48 is pushed down to a lowered position, where the actuator 54 pushes the latch 106 to move the latch 106 from the locked position to the unlocked position.
  • the spring 58 returns the lever 48 to a raised position (shown in FIG. 3).
  • the lid 36 is resecured in the closed position by pivoting the lid 36 about the hinge 86 until the latch 106 snaps into the locked position.
  • the suction source 22 draws dirty air through the suction nozzle 18 to the tangential air inlet 46 in the container 24.
  • the dirty air enters the dirt cup assembly 12 through the tangential air inlet 46 and is swirled in a cyclonic manner between the interior surface 42 of the container 24 and the cyclone assembly 34.
  • This cyclonic action separates relatively large dirt particles from the dirty air. These relatively large dirt particles are collected in the first dirt collection chamber.
  • the partially cleaned air flows through the perforated section 96 of the shroud 90 to the cyclone air inlet 98.
  • the partially cleaned air is swirled in a cyclonic manner within the cyclone 88.
  • This cyclonic action separates relatively small dirt particles from the partially cleaned air. These relatively small dirt particles exit the cyclone through the dirt outlet 100 and are collected in the second dirt collection chamber.
  • the cleaned air passes through the exhaust tube 32, the filter 30, and the air outlet 68 to the suction source 22, and is finally exhausted from the vacuum cleaner 10.
  • the dirt cup assembly 12 is released from the body 14 by sliding the release switch 62 from the locked position to the unlocked position. Then, the dirt cup assembly 12 is detached from the body 14. The dirt cup assembly 12 is then positioned above a trash can or other waste container and the lid 36 is opened to empty the dirt collected in the first dirt collection chamber and the second dirt collection chamber into the trash can. After the dirt cup assembly 12 is emptied, the lid 36 is returned to the closed position and the dirt cup assembly 12 is secured to the body 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

Un aspirateur comprend une chambre cyclonique comportant une entrée pour introduire un flux d'air pour sa circulation autour d'un axe central de la chambre cyclonique. Une chambre de filtre est positionnée en aval de la chambre cyclonique et comporte une paroi. Un filtre est positionné dans la chambre de filtre. Un tube d'évacuation s'étend le long de l'axe central dans la chambre cyclonique. Le tube d'évacuation comprend une partie d'entrée recevant le flux d'air de la chambre cyclonique et une partie de sortie dirigeant le flux d'air vers la chambre de filtre et le filtre. Le filtre est à proximité étroite de la partie de sortie. La section transversale de la partie de sortie augmente dans la direction aval pour réduire la vitesse du flux d'air passant dans la chambre de filtre et pour répartir uniformément le flux d'air passant par l'ouverture de sortie à travers le filtre.
PCT/US2011/050144 2010-09-01 2011-09-01 Aspirateur avec tube d'évacuation à section transversale croissante WO2012031077A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2013527305A JP2013536736A (ja) 2010-09-01 2011-09-01 増大した断面領域を有する排気管を備える掃除機
AU2011295880A AU2011295880A1 (en) 2010-09-01 2011-09-01 Vacuum cleaner with exhaust tube having an increasing cross-sectional area
GB1303087.9A GB2495894A (en) 2010-09-01 2011-09-01 Vacuum cleaner with exhaust tube having an increasing cross-sectional area
CN2011800525610A CN103327867A (zh) 2010-09-01 2011-09-01 具有横截面面积增大的排气管的真空吸尘器
BR112013004940A BR112013004940A2 (pt) 2010-09-01 2011-09-01 aspirador de pó com tubo de exaustão que tem uma área de seção transversal crescente
MX2013002411A MX2013002411A (es) 2010-09-01 2011-09-01 Aspiradora con tubo de escape que tiene un area transversal en aumento.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37921210P 2010-09-01 2010-09-01
US61/379,212 2010-09-01

Publications (1)

Publication Number Publication Date
WO2012031077A1 true WO2012031077A1 (fr) 2012-03-08

Family

ID=45695182

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/050144 WO2012031077A1 (fr) 2010-09-01 2011-09-01 Aspirateur avec tube d'évacuation à section transversale croissante

Country Status (8)

Country Link
US (1) US20120047682A1 (fr)
JP (1) JP2013536736A (fr)
CN (1) CN103327867A (fr)
AU (1) AU2011295880A1 (fr)
BR (1) BR112013004940A2 (fr)
GB (1) GB2495894A (fr)
MX (1) MX2013002411A (fr)
WO (1) WO2012031077A1 (fr)

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US9161669B2 (en) 2013-03-01 2015-10-20 Omachron Intellectual Property Inc. Surface cleaning apparatus
US9204773B2 (en) 2013-03-01 2015-12-08 Omachron Intellectual Property Inc. Surface cleaning apparatus
US9427126B2 (en) 2013-03-01 2016-08-30 Omachron Intellectual Property Inc. Surface cleaning apparatus
WO2017069504A1 (fr) * 2015-10-21 2017-04-27 Samsung Electronics Co., Ltd. Dépoussiéreur à cyclone et aspirateur l'intégrant
US11013378B2 (en) 2018-04-20 2021-05-25 Omachon Intellectual Property Inc. Surface cleaning apparatus

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US9238235B2 (en) 2013-02-28 2016-01-19 Omachron Intellectual Property Inc. Cyclone such as for use in a surface cleaning apparatus
US9227201B2 (en) 2013-02-28 2016-01-05 Omachron Intellectual Property Inc. Cyclone such as for use in a surface cleaning apparatus
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US9295995B2 (en) 2013-02-28 2016-03-29 Omachron Intellectual Property Inc. Cyclone such as for use in a surface cleaning apparatus
US9820621B2 (en) 2013-02-28 2017-11-21 Omachron Intellectual Property Inc. Surface cleaning apparatus
WO2015123538A1 (fr) 2014-02-14 2015-08-20 Techtronic Industries Co. Ltd. Aspirateur muni d'un séparateur logé dans la chambre de collecte des saletés
EP3209184A2 (fr) 2014-10-22 2017-08-30 Techtronic Industries Company Limited Aspirateur doté d'un séparateur cyclonique
US9775483B2 (en) 2014-10-22 2017-10-03 Techtronic Industries Co. Ltd. Vacuum cleaner having cyclonic separator
WO2016065151A1 (fr) 2014-10-22 2016-04-28 Techtronic Industries Co. Ltd. Aspirateur à main
CA3080383C (fr) 2015-01-26 2022-03-15 Hayward Industries, Inc. Nettoyeur de piscine avec separateur de particules hydrocyclonique et/ou systeme d'entrainement a six rouleaux
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EP3537943B1 (fr) * 2016-11-08 2023-09-20 Techtronic Floor Care Technology Limited Aspirateur
CN208677275U (zh) 2016-12-22 2019-04-02 碧洁家庭护理有限公司 真空吸尘器
CN106861929A (zh) * 2017-02-27 2017-06-20 潘景良 外力驱动旋转旋风分离器
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CN108114548A (zh) * 2017-06-14 2018-06-05 广西南宁华慧光纤科技有限公司 一种新型除尘器
CN111031869B (zh) * 2017-06-19 2022-04-12 创科（澳门离岸商业服务）有限公司 旋风分离器装置
WO2020112181A2 (fr) * 2018-08-06 2020-06-04 Tti (Macao Commericial Offshore) Limited Aspirateur
CN109363575A (zh) * 2018-10-22 2019-02-22 宁波德昌电机制造有限公司 干式吸尘器
CN109349957A (zh) * 2018-10-22 2019-02-19 宁波德昌电机制造有限公司 吸尘器
CN109984674B (zh) * 2018-12-03 2024-06-25 珠海格力电器股份有限公司 一种气尘分离网罩、气尘分离***及吸尘器
CN109549565A (zh) * 2018-12-03 2019-04-02 珠海格力电器股份有限公司 一种气尘分离网罩、气尘分离***及吸尘器
KR20240104971A (ko) * 2022-12-28 2024-07-05 삼성전자주식회사 청소기
CN117346844A (zh) * 2023-12-04 2024-01-05 武汉神动汽车电子电器股份有限公司 一种具备过滤碳烟功能的进气压力温度传感器

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GB2495894A (en) 2013-04-24
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MX2013002411A (es) 2013-07-05
JP2013536736A (ja) 2013-09-26
US20120047682A1 (en) 2012-03-01
GB201303087D0 (en) 2013-04-10
CN103327867A (zh) 2013-09-25

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