EP1938735A2 - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
EP1938735A2
EP1938735A2 EP07290970A EP07290970A EP1938735A2 EP 1938735 A2 EP1938735 A2 EP 1938735A2 EP 07290970 A EP07290970 A EP 07290970A EP 07290970 A EP07290970 A EP 07290970A EP 1938735 A2 EP1938735 A2 EP 1938735A2
Authority
EP
European Patent Office
Prior art keywords
collecting unit
dust collecting
dust
accommodating part
locking member
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.)
Withdrawn
Application number
EP07290970A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jang-Keun Oh
Min-Ha Kim
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Gwangju Electronics Co Ltd
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 Samsung Gwangju Electronics Co Ltd filed Critical Samsung Gwangju Electronics Co Ltd
Publication of EP1938735A2 publication Critical patent/EP1938735A2/en
Withdrawn legal-status Critical Current

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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
    • A47L9/1691—Mounting or coupling means for cyclonic chamber or dust receptacles
    • 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

Definitions

  • the present invention relates to a cleaner, and more particularly, to a dust collecting unit of a vacuum cleaner, which is mounted in a cleaner body to collect dust or dirt drawn in along with air from the outside of the cleaner body and to discharge the dust-removed air.
  • a vacuum cleaner generates a suction force by using a suction motor installed in a cleaner body, and draws in dust or dirt along with air from a surface to be cleaned by using the suction force.
  • the drawn-in air laden with the dust or dirt is deprived of the dust or dirt while passing through a dust collecting unit, and thus only the purified air is discharged to the outside of the cleaner body.
  • Such a conventional vacuum cleaner has a locking unit, which locks a dust bin detachably mounted in the cleaner body, as disclosed in Korean patent publication No. 1991-10792 .
  • the locking unit is separately installed from the dust bin on one side of the cleaner body, and fixes the dust bin in a manner of fixing a hanging rim of the dust bin through a hanging projection formed on an upper end thereof.
  • the dust bin is to be mounted in the cleaner body
  • a user grips a handle of the locking unit with one hand and at the same time, pulls the handle in an outward direction of the cleaner body to allow the handle to have a certain elastic force.
  • the user inserts the dust bin into the cleaner body with the other hand, and then releases the handle of the locking unit to restore it to an original position.
  • the dust bin is to be separated from the cleaner body, the user also separates the dust bin by an operation of three steps like as in the operation of mounting the dust bin. Accordingly, there is troublesome in that in mounting and separating the dust bin, the user should not only go through the operation of several steps, but also use both hands.
  • Korean patent publication No. 2001-499225 a locking structure for dust bin, which rotates a lever in one direction in a state where the dust bin is inserted in the cleaner body to ascend a pressing part coming in contact with an undersurface of the dust bin and thus to forcibly press the dust bin against the cleaner body to fix thereto, thereby allowing the dust bin and the cleaner body to be superiorly sealed to each other, is disclosed.
  • the user in mounting the dust bin, the user should insert the dust bin in the cleaner body in a state where she or he grips the dust bin, and then rotate the lever, and in separating the dust bin, rotate the lever and then draw out the dust bin from the cleaner body. Accordingly, to mount or separate the dust bin, the user should go through the operation of at least two steps.
  • an aspect of the present invention is to provide a vacuum cleaner capable of assembling and separating a dust collecting unit by an operation of single step.
  • Another aspect of the present invention is to provide a vacuum cleaner capable of simplifying a locking structure between a dust collecting unit and cleaner body while superiorly sealing therebetween.
  • a vacuum cleaner including a dust collecting unit detachably assembled in an accommodating part of a cleaner body to collect dust or dirt drawn in from the cleaner body, and having a dust bin to collect the dust or dirt, a handle provided on an side of the dust bin, a cover to open and close the dust bin, and a locking member having one end fixed on an upper surface of the cover and the other end projected outside from the cover while being elastically supported.
  • the dust collecting unit is configured, so that when the dust collecting unit is assembled in the accommodating part, the dust collecting unit is inserted into the accommodating part in a state where the handle is gripped and thus the locking member is elastically fixed to an inner side of the accommodating part, and when the dust collecting unit is separated from the accommodating part, the handle is pulled to draw out the dust collecting unit from the accommodating part in a state where the other end of the locking member is pushed down. Accordingly, the dust collecting unit can be assembled into or separated from the cleaner body by an operation of single step of using one hand.
  • the locking member may have a hanging projection formed on an upper surface thereof adjacent to the other end thereof, and the accommodation part may have a hanging groove formed in an upper side surface thereof to accommodate the hanging projection. Accordingly, the dust collecting unit can be assembled and fixed in the accommodation part without being freely moved.
  • the hanging projection may have an inclined surface downwardly inclined in a direction of assembling the dust collecting unit into the accommodating part, and a vertical surface formed in a direction of drawing out the dust collecting unit from the accommodating part. As the dust collecting unit is assembled into the accommodating part through the inclined surface as described above, it can be stably assembled in the accommodating part only by the operation of inserting the dust collecting unit into the accommodating part.
  • the cover may have a projecting part formed on a side of a circumference thereof to accommodate the other end of the locking member, and the projecting part may have a return spring disposed on an inner side thereof to elastically support the other end of the locking member.
  • a return spring With such a return spring, an undersurface of the dust collecting unit is strongly pressed and placed on a seating surface of the accommodating part, and thus the dust collecting unit is superiorly sealed to the cleaner body.
  • the locking member is configured, so that the other end is spaced apart from the upper surface of the cover to allow a pushing part formed thereon to move un and down.
  • the dust collecting unit may be inclinedly disposed in the direction, which is assembled into the accommodating part of the cleaner body.
  • FIGS. 1 and 2 are schematic side elevation views exemplifying a vacuum cleaner according to an exemplary embodiment of the present invention before and after a dust collecting unit is assembled in an accommodating part of a cleaner body, respectively;
  • FIGS. 3 and 4 are perspective views exemplifying the dust collecting unit of the vacuum cleaner according to the exemplary embodiment of the present invention, respectively;
  • FIG. 5 is a schematic cross-sectional view exemplifying an inner structure of the vacuum cleaner illustrated in FIG. 2 ;
  • FIG. 6 is a magnified cross-sectional view exemplifying a portion VI indicated in FIG. 5 ;
  • FIG. 7 is a magnified cross-sectional view exemplifying a portion VII indicated in FIG. 5 ;
  • FIG. 8 is a magnified cross-sectional view exemplifying the portion VII indicated in FIG. 7 when a hanging projection of a locking member is separated from a hanging groove.
  • FIGS. 1 and 2 are schematic side elevation views exemplifying the vacuum cleaner according to the exemplary embodiment of the present invention before and after a dust collecting unit is assembled into an accommodating part of a cleaner body, respectively.
  • the vacuum cleaner includes a suction nozzle 1 to draw in dust or dirt from a surface to be cleaned, an extended tube 3, a handle 5, a connecting hose 7, a cleaner body 10, and a dust collecting unit 100.
  • the connecting hose 7 is detachably coupled to the cleaner body 10 to connect the suction nozzle 1 to a hose connecting part 11 in front of the cleaner body 10 and thus to guide the dust or dirt drawn in from the surface to be cleaned into the cleaner body 10.
  • an accommodating part 12 is projected and formed in front of the cleaner body 10 to assemble the dust collecting unit 100 therein.
  • the accommodating part 12 is formed, so that a seating surface 14 on which the dust collecting unit 100 is seated and an upper side surface 16 with which an upper surface (see FIG. 3 ) of a cover 130 of the dust collecting unit 100 is in contact are downwardly inclined in a direction of assembling the dust collecting unit 100.
  • the cleaner body 10 has a suction motor (not illustrated) disposed in the inside of the rear thereof, and wheels 20 mounted on both sides of the rear thereof to allow the vacuum cleaner to smoothly move onto the surface to be cleaned.
  • the dust collecting unit 100 which will be described below with reference to FIGS. 3 through 8 , is explained by way of showing an example as having a cyclone structure for centrifugally separating the dust or dirt from air and a space for collecting the dust or dirt together therein, the present invention is not limited thereto.
  • the dust collecting unit may be configured to have an inner structure, which includes only the space for collecting the dust or an air discharging filter as well as the space for collecting the dust dirt.
  • FIGS. 3 and 4 are perspective views exemplifying the dust collecting unit of the vacuum cleaner according to the exemplary embodiment of the present invention, respectively,
  • FIG. 5 is a schematic cross-sectional view exemplifying an inner structure of the vacuum cleaner illustrated in FIG. 2
  • FIG. 6 is a magnified cross-sectional view exemplifying a portion VI indicated in FIG. 5
  • FIG. 7 is a magnified cross-sectional view exemplifying a portion VII indicated in FIG. 5
  • FIG. 8 is a magnified cross-sectional view exemplifying the portion VII indicated in FIG. 7 when a hanging projection of a locking member is separated from a hanging groove.
  • the dust collecting unit 100 includes a body 110, a cover 130, a handle 150, and a locking member 170.
  • the body 110 has an inflow hole 111 to draw in the air and the dust or dirt drawn in into the body 110 through the cleaner body 10, and a discharging hole 113 to discharge the purified air from which the dust or dirt is separated.
  • a filter 115 is disposed in an inner bottom of the body 110, and a mount 117 for supporting the filter 115 is formed to cross the discharging hole 113.
  • the body 110 has a cyclone structure, which centrifugally separates the dust or dirt drawn in along with the air into the body 110 through the inflow hole 111 and discharges the dust-separated air to the discharging hole 113.
  • the cyclone structure includes a cylindrical part 123 into which the dust or dirt along with the air is drawn in through the inflow part 121 communicated with the inflow hole 111, and a discharging tube 125 disposed in the cylindrical part 123 to discharge the dust-separated air. Also, between the inside of the cylindrical part 123 and the discharging tube 125 is formed a spiral guide 127, which impose a whirling force on the air and the dust or dirt drawn in into the cylindrical part 123 through the inflow part 121. Between the outside of the cylindrical part 123 and the inside of the body 110 is formed a dust collecting space 129 to collect the dust or dirt 30, which is centrifugally separated from the air and then discharged to an upper part of the cylindrical part 123.
  • the cover 130 is detachably assembled on an upper end of the body 110 to open or close an opened upper part of the body 110.
  • a coupling groove 130a (see FIG. 6 ) is formed on an undersurface of the cover 130 along an outer edge of the cover 130 to accommodate a top of the upper part of the body 110 and couple therewith, and a packing 131 is inserted in the coupling groove 130a to prevent a suction force from being reduced in the dust collecting unit 100.
  • the cover 130 has a countercurrent prevention prominence 133 projected inside, that is, downward, from an undersurface thereof to have a diameter larger than the cylindrical part 123.
  • the cover 130 has a recessed part 132 gently recessed downward from the middle of the upper surface thereof.
  • the recessed part 132 prevents a fixing part 171 to be described below from highly projecting beyond the upper surface of the cover 130. Accordingly, when the dust collecting unit 100 is assembled in or separated from the accommodating part 12 of the cleaner body 10, the fixing part 171 is prevented from hanging on a front end 19 (see FIG. 7 ) of the accommodating part 12, thereby allowing the dust collecting unit 100 to smoothly assemble or separate.
  • the cover 130 has a projecting part 135 with an accommodating groove 135a formed on one side of a circumference thereof.
  • a pushing part 175 to be described later is disposed to be move up and down in the accommodating groove 135a, and a return spring 160 is disposed in the accommodating groove 135a to elastically support a lower end of the pushing part 175.
  • the return spring 160 at both ends thereof is fixed by a first fixing projection 161 of the accommodating groove 135a and a second fixing projection 162 of an undersurface of the pushing part 175.
  • the handle 150 has a gripping part 151 disposed in a longitudinal direction of the body 110.
  • the gripping part 151 at upper and lower ends thereof is connected to upper side and lower side connecting parts 153 and 155 projected from one side of a circumference surface of the body 110, so that it is maintained in a spaced-apart from the body 110.
  • the upper side connecting part 153 at an upper surface thereof has a seating groove 153a in which the projecting part 135 of the cover 130 is seated.
  • the upper side connecting part 153 is disposed to be exposed outside of the accommodating part 12, so that when the dust collecting unit 100 is assembled in the accommodating part 12, the user enables the pushing part 175 accommodated in the projecting part 135 to easily operate.
  • the locking member 170 includes a fixing part 171 and an extended bar 173.
  • the fixing part 171 acts as a knob, which can be gripped by the user thus to easily open or close the cover 130.
  • a fixing part 171 is fixed by a fixing screw 165 in the recessed part 132 of the cover 130, so that it is not highly projected beyond the upper surface of the cover 130.
  • the extended bar 173 is extended in a certain length from one side of the fixing part 171.
  • Such an extended bar 173 at an approximate middle thereof has a bent part 174 placed on a portion of an edge 132a of the recessed part 132.
  • the extended bar 173 is formed, so that a portion toward the pushing part 175 is stepped to be higher than a portion toward the fixing pat 171 centering on the bent part 174. Accordingly, the portion of the extended bar 173 toward the pushing part 175 is spaced apart from the upper surface of the cover 120. Therefore, the pushing part 175 can secure a space, which is movable up and down as much as a distance spaced apart from the upper surface of the cover 120.
  • the extended bar 173 has a hanging projection 177 projected upward from an upper surface thereof adjacent to the pushing part 175.
  • the hanging projection 177 at one side surface thereof has an inclined surface 177a downwardly inclined in a direction of assembling the dust collecting unit100 into the accommodating part 12 of the cleaner body 10, and at the other side surface has a vertical surface 177b formed in a direction of drawing out the dust collecting unit 100 from the accommodating part 12 of the cleaner body 10.
  • a hanging groove 18 in which the hanging projection 177 is detachably inserted and fixed is formed on a front end side of the upper side surface 16 of the accommodating part 12.
  • the user grips the gripping part 151 of the handle 150 and then slides the dust collecting unit 100 into the accommodating part 12 along an inclined direction corresponding to the accommodating part 12.
  • the hanging projection 177 of the locking member 170 is slid while the inclined surface 177a comes in contact with the front end 19 of the accommodating part 12.
  • the extended bar 173 of the locking member 170 is deformed, so that the portion toward pushing part 175 is moved downward in a certain angle about the bent part 174 placed on the edge 132a of the recessed part 132.
  • the return spring 160 is compressed, so that an elastic supporting force of the return spring 160 to the portion of the extended bar 173 toward pushing part 175 is increased. Subsequently, when the dust collecting unit 100 is completely inserted into the accommodating part 12, the hanging projection 177 is elastically inserted and locked in the hanging groove 18, as illustrated in FIG. 7 .
  • the dust collecting unit 100 can be simply assembled in the accommodating part 12 only by the operation of inserting the dust collecting unit 100 into the accommodating part 12.
  • the dust collecting unit 100 is to be separated from the accommodating part 12
  • the user grips the dripping part 151 of the handle 150 and at the same time, pulls the handle 150 in a drawing-out direction while pushing down the pushing part 175 with her or his thumb to completely separate the hanging projection 177 from the hanging groove 18.
  • the dust collecting unit 100 is separated from the accommodating part 12.
  • the operation of separating the dust collecting unit 100 from the accommodating part 12 can be also simply carried out, particularly, only by using one hand.
  • the vacuum cleaner is advantageous in that the dust collecting unit can be assembled in or separated from the cleaner body by the operation of single step.
  • the vacuum cleaner according to the exemplary embodiment of the present invention has the simple locking structure, which fixedly locks the dust collecting unit in the accommodating part of the cleaner body. Accordingly, the vacuum cleaner according to the exemplary embodiment of the present invention is easy to maintain and repair.
  • the vacuum cleaner according to the exemplary embodiment of the present invention is configured, so that the dust collecting unit assembled in the accommodating part of the cleaner body is maintained in the superiorly sealed state with the cleaner body, thereby improving the reliability of product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Electric Suction Cleaners (AREA)
EP07290970A 2006-12-28 2007-08-02 Vacuum cleaner Withdrawn EP1938735A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060136897A KR100831346B1 (ko) 2006-12-28 2006-12-28 진공청소기

Publications (1)

Publication Number Publication Date
EP1938735A2 true EP1938735A2 (en) 2008-07-02

Family

ID=39301077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290970A Withdrawn EP1938735A2 (en) 2006-12-28 2007-08-02 Vacuum cleaner

Country Status (4)

Country Link
EP (1) EP1938735A2 (ko)
KR (1) KR100831346B1 (ko)
CN (1) CN101209192A (ko)
RU (1) RU2345697C1 (ko)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2454051A (en) * 2007-10-23 2009-04-29 Samsung Kwangju Electronics Co Ltd Detachable dust collecting unit with handle
WO2011012476A1 (de) 2009-07-31 2011-02-03 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger mit staubabscheideeinheit
EP2543298A1 (en) * 2011-07-04 2013-01-09 Samsung Electronics Co., Ltd. Vacuum cleaner having shredder
EP2215950A3 (en) * 2009-02-06 2013-03-06 Electrolux Home Care Products, Inc. Vacuum cleaner dirt container latch and release system
US9078550B2 (en) 2011-11-11 2015-07-14 Electrolux Home Care Products, Inc. Latch assembly for a vacuum system
US9131816B2 (en) 2013-01-18 2015-09-15 Electrolux Home Care Products, Inc. Central vacuum cleaner apparatus
CN109008790A (zh) * 2017-06-08 2018-12-18 成都智利达科技有限公司 一种改进型除尘器

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5104483B2 (ja) * 2008-04-01 2012-12-19 パナソニック株式会社 電機掃除機
DE102009035620B4 (de) * 2009-07-31 2013-04-11 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger mit Staubbehälter
WO2011074713A1 (ko) * 2009-12-14 2011-06-23 엘지전자 주식회사 진공청소기
JP5659641B2 (ja) * 2010-09-09 2015-01-28 パナソニック株式会社 電気掃除機
JP5932697B2 (ja) * 2013-03-27 2016-06-08 日立アプライアンス株式会社 電気掃除機
JP5993796B2 (ja) * 2013-05-14 2016-09-14 日立アプライアンス株式会社 電気掃除機
CN103948347B (zh) * 2014-04-23 2016-04-06 苏州科比电器有限公司 嵌入式吸尘器的手扣结构
CN104858493A (zh) * 2015-06-05 2015-08-26 赵士立 一种液压摆式剪板机可拆卸集屑箱
WO2019026309A1 (ja) * 2017-07-31 2019-02-07 シャープ株式会社 電気掃除機
CN108478097A (zh) * 2018-03-07 2018-09-04 泰怡凯科技有限公司 吸尘器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6428589B1 (en) 2000-09-29 2002-08-06 Royal Appliance Mfg. Co. Two-stage particle separator for vacuum cleaners
KR100530359B1 (ko) 2003-10-07 2005-11-22 삼성광주전자 주식회사 사이클론 분리장치의 오물수거통 착탈장치
KR100932761B1 (ko) * 2004-04-09 2009-12-21 엘지전자 주식회사 진공청소기의 집진어셈블리
KR100560967B1 (ko) 2005-01-14 2006-03-15 삼성광주전자 주식회사 사이클론 집진장치

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2454051B (en) * 2007-10-23 2010-04-14 Samsung Kwangju Electronics Co Duct-collecting unit for a vacuum cleaner
US7836546B2 (en) 2007-10-23 2010-11-23 Samsung Gwangiu Electronics Co., Ltd. Dust collecting unit for vacuum cleaner
GB2454051A (en) * 2007-10-23 2009-04-29 Samsung Kwangju Electronics Co Ltd Detachable dust collecting unit with handle
EP2215950A3 (en) * 2009-02-06 2013-03-06 Electrolux Home Care Products, Inc. Vacuum cleaner dirt container latch and release system
WO2011012476A1 (de) 2009-07-31 2011-02-03 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger mit staubabscheideeinheit
DE102009035619A1 (de) 2009-07-31 2011-04-21 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger mit Staubabscheideeinheit
EP2543298A1 (en) * 2011-07-04 2013-01-09 Samsung Electronics Co., Ltd. Vacuum cleaner having shredder
US8522395B2 (en) 2011-07-04 2013-09-03 Samsung Electronics Co., Ltd. Vacuum cleaner having shredder
US8857010B2 (en) 2011-07-04 2014-10-14 Samsung Electronics Co., Ltd. Vacuum cleaner having shredder
US9078550B2 (en) 2011-11-11 2015-07-14 Electrolux Home Care Products, Inc. Latch assembly for a vacuum system
US9131816B2 (en) 2013-01-18 2015-09-15 Electrolux Home Care Products, Inc. Central vacuum cleaner apparatus
US9579004B2 (en) 2013-01-18 2017-02-28 Electrolux Home Care Products, Inc. Central vacuum cleaner utility port
US9986882B2 (en) 2013-01-18 2018-06-05 Electrolux Home Care Products, Inc. Central vacuum cleaner fan motor mount
CN109008790A (zh) * 2017-06-08 2018-12-18 成都智利达科技有限公司 一种改进型除尘器
CN109008790B (zh) * 2017-06-08 2020-12-15 江苏蓝电环保股份有限公司 一种改进型除尘器

Also Published As

Publication number Publication date
KR100831346B1 (ko) 2008-05-22
RU2007118380A (ru) 2008-11-27
CN101209192A (zh) 2008-07-02
RU2345697C1 (ru) 2009-02-10

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