EP2142064B1 - Dispositif de separation de poussiere d'aspirateur - Google Patents

Dispositif de separation de poussiere d'aspirateur Download PDF

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Publication number
EP2142064B1
EP2142064B1 EP08741196.3A EP08741196A EP2142064B1 EP 2142064 B1 EP2142064 B1 EP 2142064B1 EP 08741196 A EP08741196 A EP 08741196A EP 2142064 B1 EP2142064 B1 EP 2142064B1
Authority
EP
European Patent Office
Prior art keywords
dust
cyclone
outlet
air
container
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.)
Active
Application number
EP08741196.3A
Other languages
German (de)
English (en)
Other versions
EP2142064A1 (fr
EP2142064A4 (fr
Inventor
Kie-Tak Hyun
Kyeong-Seon c/o LG Electronics Inc.IP Group JEONG
Jin-Hyouk Shin
Seong-Koo Cho
Geun-Bae Hwang
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP2142064A1 publication Critical patent/EP2142064A1/fr
Publication of EP2142064A4 publication Critical patent/EP2142064A4/fr
Application granted granted Critical
Publication of EP2142064B1 publication Critical patent/EP2142064B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1641—Multiple arrangement thereof for parallel flow
    • 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
    • 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 disclosure relates to a dust separating apparatus of a vacuum cleaner.
  • a vacuum cleaner is an apparatus that uses suctioning force imparted by a suction motor installed in the main body to suction air including dust and filter the dust within the main body.
  • Such vacuum cleaners can largely be divided into canister vacuum cleaners that have a suctioning nozzle provided separately from and connected with a main body, and upright vacuum cleaners that have a suctioning nozzle coupled to the main body.
  • a related art vacuum cleaner includes a vacuum cleaner main body, and a dust separating apparatus installed in the vacuum cleaner main body for separating dust from air.
  • the dust separating apparatus is generally configured to separate dust using the cyclone principle.
  • dust separating apparatuses for vacuum cleaners that can be easily separated from the vacuum cleaner main body, and that enable dust to easily be emptied are required.
  • An object of the present disclosure is to provide a dust separating apparatus of a vacuum cleaner with improved dust separating performance.
  • Another object of the present disclosure is to provide a dust separating apparatus of a vacuum cleaner having a dust container with a simplified configuration to allow a user to easily empty dust.
  • a further object of the present disclosure is to provide a dust separating apparatus of a vacuum cleaner that allows a user to use minimal exertion to handle a dust container.
  • An advantage according to embodiments of the present disclosure is that because a plurality of inlets is formed in a cyclone, and a plurality of cyclone airflows is formed within the cyclone, the airflow volume is increased and airflow loss is reduced, for improved dust separating performance.
  • inlets are formed at either side of the cyclone, and a dust outlet is formed in the center of the cyclone, so that a forceful cyclone airflow is generated at the central portion of the cyclone to allow dust to be easily discharged.
  • a cover member is detachably coupled to the cyclone, with the cover member separated from the cyclone, a user can easily clean the inside of the cyclone and the filter member.
  • a dust container that stores dust is provided as a separate component from a dust separator, a user can empty dust by separating only the dust container, thereby increasing user convenience in handling the dust container.
  • FIGs. 1 and 2 are perspective views schematically showing the structure of a dust separating apparatus of a vacuum cleaner according to a first embodiment of the present disclosure
  • Fig. 3 is a disassembled perspective view of the dust separating apparatus in Figs. 1 and 2 .
  • a dust separating apparatus 1 of a vacuum cleaner includes a dust separating unit 10 that separates dust from suctioned air, a dust container 20 for storing dust separated by the dust separating unit 10, a suctioning guide 30 that guides the flow of air including dust toward the dust separating unit 10, and a distribution unit 40 for distributing the air in the suctioning guide 30 to the dust separating unit 10.
  • the dust separating unit 10 separates dust from air supplied from the distribution unit 40.
  • the dust separating unit 10 uses the cyclone principle to separate dust from air, and includes a cyclone 110 for this purpose.
  • the axis of the cyclone 110 extends in a horizontal direction.
  • the air within the cyclone 110 rotates in a vertical direction.
  • a pair of inlets 120 is formed (one on either side) on the cyclone 110, to suction air.
  • the pair of inlets 120 may be formed in tangential directions with respect to the cyclone 110 in order to generate a cyclone airflow within the cyclone 110.
  • the pair of inlets 120 provides suctioning passages for air entering the cyclone 110.
  • the pair of inlets 120 is connected, one on either side of the distribution unit 40. Therefore, the air that flows through the suctioning guide 30 is branched at either side at the distribution unit 40, and the branched air rises along the respective inlets 120 to be suctioned into the cyclone 110.
  • a dust outlet 130 that exhausts dust separated within the cyclone 110 is formed at the center of the cyclone 110.
  • the dust separated from air suctioned through each inlet 120 at either side of the cyclone 110 moves to the center of the cyclone 110.
  • the dust that flows to the center of the cyclone passes through the dust outlet 130 and is discharged to the dust container 20.
  • the dust outlet 130 is formed tangentially with respect to the cyclone 110 to allow easy discharging of dust.
  • the dust separated in the cyclone 110 is discharged tangentially with respect to the cyclone 110 - that is, in the same direction in which the dust has been rotating - allowing easy discharging of not only dust with higher density, but also easy discharging of dust with lower density from the cyclone 110.
  • the dust container 20 stores dust separated in the dust separating unit 10. Since the dust container 20 is installed on the vacuum cleaner main body, the dust container 20 communicates with the dust separating unit 10.
  • the dust container 20 when the dust container 20 is installed on the vacuum cleaner main body, the dust container 20 is disposed below the dust separating unit 10. Thus, a dust inlet 210 is formed in the upper side of the dust container 20. Also, the dust outlet 130 extends downward from the cyclone 110.
  • the dust separated in the cyclone 110 moves downward along the dust outlet 130, and the separated dust can easily enter the dust container 20.
  • a cover member 220 is coupled at the bottom of the dust container 20 to discharge dust stored within.
  • the cover member 220 may be pivotably coupled to the dust container 20, and may be detachably coupled thereto.
  • the coupling method of the cover member 220 in the present embodiment is not restricted to any particular methods.
  • the dust container 20 is provided as a separate component to the dust separating unit 10, and is configured to be selectively communicable with the dust separating unit 10. Accordingly, a user can separate only the dust container 20 from the vacuum cleaner main body to empty dust stored in the dust container 20 to the outside.
  • the structure of the dust container 20 is simplified and the weight of the dust container 20 can be minimized.
  • Fig. 4 is a sectional view of Fig. 1 taken along line A-A
  • Fig. 5 is a sectional view of Fig. 1 taken along line B-B.
  • An inlet 120 is respectively formed on either side of the body 111. Each inlet 120 is formed tangentially with respect to the cyclone 110. Thus, the air suctioned through each inlet 120 forms one of two cyclone airflows within the cyclone 110. The cyclone airflows circulate along the inner surface of the body 111.
  • the cyclone when a pair of cyclone airflows is generated within a single space, the cyclone can be formed smaller than with a single cyclone airflow generated in a single space.
  • the strength of the airflow is greater than in the case where a single cyclone airflow is generated in a single space, thereby increasing dust separating performance.
  • Dust that moves to the center of the cyclone 110 can be discharged through the dust outlet 130 to the dust container 20 by means of the strong cyclone airflow, so that dust discharging performance can be increased.
  • Hair and other impurities can easily adhere to the entrance or the inside of the dust outlet 130 by means of static electricity. However, because in the present embodiment, a strong cyclone airflow is generated at the dust outlet 130, hair and other impurities do not adhere to the dust outlet 130, and can easily be discharged to the dust container 20.
  • An outlet 116 is formed to pass through each side 115 to discharge air from which dust is separated in the cyclone 110.
  • a filter member 150 is coupled to each outlet 116 to filter the discharged air.
  • the filter member 150 is configured with a cylindrical fastener 152 fastened to the inside of the cyclone 110, and a conical filter 154 extending from the fastener 152 to filter air.
  • a plurality of holes 156 is formed in the filter 154 for air to pass through.
  • air separated from dust in the cyclone 110 passes through the plurality of holes 156 and is discharged from the cyclone 110 through the outlets 116.
  • the fastener 152 does not have through-holes formed therein, so that air suctioned through the inlet 120 is not immediately discharged, but is able to smoothly circulate within the cyclone 110.
  • the circulation of suctioned air can be guided to generate a smooth cyclone airflow within the cyclone 110, thereby increasing dust separating performance.
  • a length (L1) between the pair of filter members 150 provided within the cyclone may be made greater than a width (L2) of the dust outlet 130.
  • the cyclone airflows generated in the cyclone 110 converge in the center of the cyclone 110, as described above, and the dust separated from air through the cyclone airflow is discharged through the dust outlet 130.
  • the length (L1) between the pair of filter members 150 is made smaller than the width (L2) of the dust outlet 130, impurities such as hair and tissue paper are not discharged through the dust outlet 130, and can adhere to the filter member 150 or lodge inside the holes 156. In this case, the air cannot easily pass through the filter member 150, causing a reduction in suctioning force.
  • the length (L1) between the pair of filter members 150 is made greater than the width (L2) of the dust outlet 130, so that impurities such as hair and tissue paper can be completely discharged through the dust outlet 130.
  • air is suctioned through the plurality of inlets 120 into the cyclone 110, and air separated from dust in the cyclone 110 is discharged from the cyclone 110 through the plurality of outlets 116.
  • a pair of guides 170 is formed within the cyclone 110 to prevent dust separated through cyclone airflow from moving to the outlets 116.
  • the guide members 170 are formed along the inner peripheries of the cyclones 110 in unbroken curvatures.
  • the guide members 170 extend predetermined lengths from the inner peripheries of the cyclones 110 to the axes of the cyclones.
  • the guide members 170 extend from the inner peripheries of the cyclones 110 to the dust outlet 130. That is, the guide members 170 have a cross section that is formed with a predetermined slope. Accordingly, one end 171 of each of the guide members 170 has a diameter greater than the other end 172 thereof. Specifically, the guide members 170 are formed to have diameters that gradually narrow from the outlets 116 toward the dust outlet 130.
  • the cyclone airflow generated at the inlet 120 moves toward the dust outlet 130 along the inner periphery of the cyclone 110.
  • the cyclone airflows are guided by inner sloped surfaces 173 of the guide members 170 to easily flow to the dust outlet 130.
  • the cyclone airflows move toward the other ends 172 of the guide members 170, the cyclone airflows flow between outer sloped surfaces 174 of the guide members 170 and the inner periphery of the cyclone 110, and are prevented from flowing toward the outlets 116.
  • the holes 156 of the filter member 150 being clogged by the separated dust can be prevented, and thus, a reduction of suctioning power of air can be prevented.
  • the diameter of the flow guide 170 progressively lessens toward the dust outlet 130, the strength of the cyclone airflows converging at the dust outlet 130 can be increased, allowing the separated dust to be easily discharged.
  • each guide member 170 in the present embodiment can guide the cyclone airflows to flow smoothly from the outlets 116 to the dust outlet 130, and allow cyclone airflow to circulated between the respective guide members 170 when the cyclone airflows have moved to the dust outlet 130.
  • each guide member 170 may be disposed within the width of the dust outlet 130. That is, at least a portion of the dust outlet 130 is disposed between the guide members 170.
  • each guide member 170 When the one end 172 of each guide member 170, as described above, is disposed within the width of the dust outlet 130, dust on the outer sloped surfaces 174 of each guide member 170 is not discharged through the dust outlet 130, and can be prevented from continuously circulating along the guide members 170.
  • An opening 112 is formed on the body 111 of the cyclone 110 to allow replacing and cleaning of the filter member 150.
  • the opening 112 is opened and closed by means of a cover member 160.
  • a sealing member 114 is provided at the coupling region of the opening 112 and the cover member 160.
  • the inner surface of the cover member 160 may be formed to have the same curvature as the inner periphery of the body 111 when the cover member 160 is coupled to the body 111. Accordingly, changes to the cyclone airflow due to the cover member 160 within the cyclone 110 can be prevented, and the cyclone airflow can be uniformly maintained.
  • cover member 160 is detachably coupled to the cyclone 110, a user can detach the cover member 160 to easily replace the filter members 150 and easily clean the inside of the cyclone 110 and the filter members 150.
  • a dust compartment 202 for storing dust is defined within the dust container 20, and a dust inlet 210 is defined in the top of the dust container 20. Also, a sealing member 212, for sealing the contacting region between the dust inlet 210 and the dust outlet 130, is provided on the dust inlet 210. Here, the sealing member 212 may also be provided on the dust outlet 130.
  • Figs. 6 and 7 are sectional views showing airflow within a dust separating apparatus according to the first embodiment, where Fig. 6 is a sectional view of Fig. 1 taken along line A-A showing airflow, and Fig. 7 is a sectional view of Fig. 1 taken along line B-B showing airflow.
  • the suctioned air rotates along the inner surface of the cyclone 110 to move along the guide members 170 and converge at the center of the cyclone 110, and during this process, air and dust are subjected to different centrifugal forces due to their differences in weight, so that separation occurs therebetween.
  • the separated dust (represented by the broken lines) is discharged from the center of the cyclone 110 through the dust outlet 130, and the discharged dust flows through the dust outlets 130 and into the dust container 20.
  • air (represented by the solid lines) separated from dust is filtered by the filter members 150, and then passes through the outlets 116 and is discharged from the cyclone 110.
  • the discharged air flows through the respective air outlets 140, converges at the converging passage 142, and enters the main body of the vacuum cleaner.
  • Fig. 8 is a schematic perspective view showing the structure of a dust separating apparatus of a vacuum cleaner according to a second embodiment of the present disclosure
  • Fig. 9 is a sectional view of Fig. 8 taken along line C-C.
  • the present embodiment is the same as the first embodiment in all other aspects except that it is characterized by differences in the shapes of the cyclone and the dust outlet. Therefore, description will be provided of only the characterizing portions of the present embodiment.
  • a dust separator 60 includes a cyclone 610 that progressively increases in diameter from either end to the center 611.
  • a pair of guide members 640 is formed at the dust outlet 630.
  • the guide members 640 are symmetrically formed about the center of the dust outlet 630.
  • the cyclone 610 is thus formed to have a progressively increasing diameter toward the center, a pair of cyclone airflows generated at either side of the cyclone 610, can easily converge at the center.
  • the diameter at the center of the cyclone 610 is greater than at either ends, the cyclone airflow velocity at the center of the cyclone 610 is reduced, thus reducing generation of eddies at the center of the cyclone 610.
  • the pair of guide members 640 is provided symmetrically to either side of the dust outlet 630, the cyclone airflows can move between the respective guide members 640, to thereby facilitate the converging of the cyclone airflows toward the center 611.
  • the dust outlet 630 is also larger than that in the first embodiment.
  • the upper and lower perimeters 632 and 634 of the dust outlet 630 may be formed to be angled corresponding to the sloped angle of the cyclone 610.
  • the center of the cyclone 610 may be configured to be mounted on top of the dust container 70. Accordingly, the dust container 70 may have a mounting recess 701 formed to mount the central portion of the cyclone 610 therein.
  • the dust container 20 may be disposed below the cyclone 110 while installed on the main body of the vacuum cleaner, or alternatively, the dust container 20 may be disposed at the front of the cyclone 110. In these cases, the dust inlet of the dust container 20 may be defined in a side of the dust container 20, or may be disposed at the top of the dust container 20.
  • a cover member for discharging dust may be provided at either the top or the bottom of the dust container.
  • the dust inlet may be formed in a side of the dust container, and the cover member may be provided at the bottom of the dust container; or alternatively, the cover member may be provided at the top of the dust container, and the dust inlet may be formed in the cover member. In the latter case, the structure of the dust container itself may be simplified.
  • a compressing apparatus for compressing dust stored within the dust container may be further provided.
  • Such a compressing apparatus may be provided within the dust container, may include at least one compressing member capable of moving within the dust container, and be provided with a driving apparatus for moving the compressing member and provided outside of the dust container - on the vacuum cleaner main body, for example.

Claims (4)

  1. Appareil de séparation de poussière pour un aspirateur, comprenant :
    un séparateur de poussière définissant une pluralité d'entrées d'air (120) ;
    une sortie de poussière (130) qui est inférieure en nombre aux entrées d'air (120), la sortie de poussière (130) étant prévue pour décharger la poussière séparée de l'air aspiré par les respectives entrées d'air (120) ; et
    un récipient de poussière (20) pour stocker la poussière déchargée par la sortie de poussière (130),
    dans lequel le séparateur de poussière comprend un corps (111) pour générer un flux d'air cyclonique, et une paire de côtés (115), chacun constituant l'un des côtés du corps (111), les côtés (115) se faisant face parallèlement les uns aux autres,
    caractérisé en ce que :
    une sortie (116) est formée pour passer à travers chaque côté (115) afin de décharger l'air duquel la poussière est séparée dans le séparateur de poussière,
    la sortie de poussière (130) s'étend vers le bas à partir du corps (111) du séparateur de poussière,
    les entrées d'air (120) sont prévues, avec une de chaque côté du séparateur de poussière, et
    la sortie de poussière est disposée entre la pluralité d'entrées d'air (120).
  2. Appareil de séparation de poussière selon la revendication 1, dans lequel la sortie de poussière (130) est prévue à titre unique.
  3. Appareil de séparation de poussière selon la revendication 1, comprenant en outre un élément de guidage (170) prévu à l'intérieur du séparateur de poussière, pour guider le déchargement de la poussière séparée.
  4. Appareil de séparation de poussière selon la revendication 3, dans lequel l'élément de guidage (170) est formé le long d'un périmètre interne du séparateur de poussière.
EP08741196.3A 2007-04-12 2008-04-07 Dispositif de separation de poussiere d'aspirateur Active EP2142064B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070036037A KR100816910B1 (ko) 2007-04-12 2007-04-12 진공 청소기의 먼지 분리 장치
PCT/KR2008/001946 WO2008127002A1 (fr) 2007-04-12 2008-04-07 Dispositif de séparation de poussière d'aspirateur

Publications (3)

Publication Number Publication Date
EP2142064A1 EP2142064A1 (fr) 2010-01-13
EP2142064A4 EP2142064A4 (fr) 2011-07-06
EP2142064B1 true EP2142064B1 (fr) 2016-04-06

Family

ID=39411739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08741196.3A Active EP2142064B1 (fr) 2007-04-12 2008-04-07 Dispositif de separation de poussiere d'aspirateur

Country Status (7)

Country Link
EP (1) EP2142064B1 (fr)
KR (1) KR100816910B1 (fr)
CN (1) CN101668466B (fr)
AU (1) AU2008238967B2 (fr)
ES (1) ES2575556T3 (fr)
RU (1) RU2408250C1 (fr)
WO (1) WO2008127002A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009128658A2 (fr) * 2008-04-16 2009-10-22 엘지전자 주식회사 Aspirateur
CN102342799B (zh) * 2010-08-06 2016-05-04 乐金电子(天津)电器有限公司 具有双层过滤结构的集尘装置
WO2015078503A1 (fr) * 2013-11-28 2015-06-04 Alfred Kärcher Gmbh & Co. Kg Cyclone séparateur
EP3272407B1 (fr) * 2015-07-27 2019-11-20 LG Chem, Ltd. Appareil de filtration de filtre à sac et de collecte de poussière permettant d'empêcher une accumulation de poussière

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Publication number Priority date Publication date Assignee Title
DE3936078C2 (de) * 1989-10-30 1994-02-10 Guenter Dr Ing Slowik Drallerzeuger für Zyklonabscheider
US6572668B1 (en) * 1999-02-24 2003-06-03 Lg Electronics Inc. Cyclone dust collector in vacuum cleaner
KR20010014570A (ko) * 1999-04-23 2001-02-26 구자홍 싸이클론 집진장치의 압력손실 저감 장치
KR100407950B1 (ko) * 2001-04-10 2003-12-01 엘지전자 주식회사 다중 사이클론 집진장치
JP4315963B2 (ja) * 2001-12-12 2009-08-19 三菱電機株式会社 サイクロン集塵器
JP4080833B2 (ja) * 2002-10-10 2008-04-23 株式会社東芝 電気掃除機
KR100606842B1 (ko) * 2004-10-05 2006-08-01 엘지전자 주식회사 다중 사이클론 집진장치
KR20060031321A (ko) * 2004-10-08 2006-04-12 주식회사 대우일렉트로닉스 진공청소기용 집진통
KR100622548B1 (ko) * 2004-12-02 2006-09-19 삼성광주전자 주식회사 진공청소기용 집진장치
GB2426726B (en) * 2005-05-27 2008-11-05 Dyson Technology Ltd Cyclonic separating apparatus

Also Published As

Publication number Publication date
EP2142064A1 (fr) 2010-01-13
EP2142064A4 (fr) 2011-07-06
ES2575556T3 (es) 2016-06-29
AU2008238967A1 (en) 2008-10-23
WO2008127002A1 (fr) 2008-10-23
CN101668466B (zh) 2013-02-13
AU2008238967B2 (en) 2010-07-15
KR100816910B1 (ko) 2008-03-25
RU2408250C1 (ru) 2011-01-10
CN101668466A (zh) 2010-03-10

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