EP2364631B1 - Filterbeutel - Google Patents

Filterbeutel Download PDF

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Publication number
EP2364631B1
EP2364631B1 EP11161441A EP11161441A EP2364631B1 EP 2364631 B1 EP2364631 B1 EP 2364631B1 EP 11161441 A EP11161441 A EP 11161441A EP 11161441 A EP11161441 A EP 11161441A EP 2364631 B1 EP2364631 B1 EP 2364631B1
Authority
EP
European Patent Office
Prior art keywords
filter bag
seals
seal
retaining plate
pressure
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
EP11161441A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2364631A1 (de
Inventor
Dominik Diesch
Ridvan GÜNAY
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.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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 Vorwerk and Co Interholding GmbH filed Critical Vorwerk and Co Interholding GmbH
Publication of EP2364631A1 publication Critical patent/EP2364631A1/de
Application granted granted Critical
Publication of EP2364631B1 publication Critical patent/EP2364631B1/de
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
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
    • A47L9/1436—Connecting plates, e.g. collars, end closures
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle

Definitions

  • the invention relates to a filter bag for a vacuum cleaner with a holding plate and an opening provided in the holding plate inflow, further with a fixed to the retaining plate seal for cooperation with a vacuum cleaner side nozzle.
  • Filter bag of the type in question have become known in various ways.
  • a known filter bag is a filter bag with a plastic collar known.
  • the plastic collar is connected directly to the filter material by sewing.
  • the invention has the object to provide a favorable design of a dust filter bag in terms of a sealability to a vacuum cleaner side nozzle.
  • the holding plate is designed as a plastic injection molded part, that two seals are provided on the holding plate, that the seals are molded onto the holding plate, that both seals are integrally formed with each other and that the seals are made of TPE.
  • the seals can be formed, for example, in the two-component injection molding process favorably by injection molding.
  • the filter bag to be arranged in the vacuum cleaner serves to filter the dust-laden suction air stream.
  • the filter bag has the holding plate leaving an inflow opening.
  • the inflow opening is fluidly assigned to a nozzle of the vacuum cleaner, which nozzle represents the air flow connection between a device attachment having a suction mouth and the filter bag. To seal the said seal is used.
  • the seals may be formed widening radially outward or radially inwardly with respect to the retaining plate opening.
  • an improved sealing seat is achieved.
  • the seal blocks in the usual way a pressure range, namely the pressure range within the nozzle or within the filter bag, from a second pressure range, further in particular from the clean gas side pressure range.
  • the pressures in these pressure ranges are always different.
  • the intended seal on the retaining plate is designed so as to widen radially outward or radially inward in the cross section so that the pressure region of higher pressure always urges the seal into the sealing contact position. It is achieved according to an increased sealing effect.
  • the two seals on the retainer plate are coaxially aligned with respect to the retainer plate side opening. It is further provided in this regard that one of these seals expands radially outward with respect to the retaining plate opening and the other seal radially inward accordingly.
  • the seals may be formed in cross-section in the form of conventional lip seals.
  • the seals here consist of a material such as TPE and are fixedly arranged on the support plate, namely molded.
  • a seal more preferably the outer seal, is arranged such that it runs outside the nozzle to be assigned to the vacuum cleaner.
  • the inner seal serves to cooperate with this nozzle, while the outer seal, for example, serves to cooperate with a vacuum cleaner housing section.
  • the partition wall is formed, for example, from a section of the filter bag receiving filter bag chamber, in particular in an arrangement of an air flow fan motor in the flow direction behind the filter bag against the pressure area in the nozzle and beyond also to the ambient pressure or the pressure range behind the blower motor is sealed.
  • the arrangement of a second sealing element between the holding plate and this partition additional security is created. Leaks at one or the other seal do not lead directly to a short circuit of the pressure ranges.
  • the partition is in a further preferred embodiment in this context, an interface between the holding plate inlet and nozzle comprehensive, bottom-like wall, so that both seals can, for example, be arranged concentrically to each other, this further, if necessary, by clamping a common separation / sealing plane.
  • both seals are exposed on one side to the pressure of a third pressure range.
  • This pressure range differs in terms of pressure from the pressure of the other two pressure ranges.
  • the ambient pressure is present in this third pressure range;
  • the pressure behind the suction fan Alternatively, the pressure behind the suction fan.
  • a seal more preferably an inner seal viewed from the inflow port seals the first pressure range to the third pressure range and the second, outer seal seals the second pressure range to the third pressure range.
  • a possible leakage within one of the seals does not lead to an immediate short circuit between the first and the second pressure region, so that so-called raw gas, ie dust-laden suction air, can flow from the first pressure region delimited by the nozzle to the clean gas side after the filter bag.
  • This advantageous effect is further increased in a preferred embodiment in that the pressure in the third pressure range is higher than the respective pressure in the first pressure range and in the second pressure range. So is always the pressure in the first pressure range, ie within the nozzle and in continuation of the same always within the filter bag always lower than the pressure in the second pressure range in the flow direction behind the filter bag, further in the adjusting between Filterlessnesswandung and filter chamber space.
  • This pressure in the second pressure range is always lower than the ambient pressure, further always lower than the pressure behind the suction fan, which pressure of the third pressure chamber equivalent. Due to the fact that both seals according to this embodiment are exposed to the pressure of the third pressure range, eg. The ambient pressure on damage, one of the seals, in particular the inner, the raw gas side sealing seal, always the relatively clean ambient air from the sucked third pressure range, so on in the raw gas area or in the clean gas area of the second pressure range in case of damage to the other seal. According to the pressure conditions, no raw gas, ie suction laden with suction material, reaches the clean gas side.
  • connection opening to the third pressure area is provided between the seals.
  • the opening area is selected to be larger than an opening area of a possible leakage.
  • the connection opening to be provided is preferably selected to be greater than 2 mm 2 .
  • the connection opening to the third pressure region as a concentric opening, further in connection with this passing through the nozzle as a concentric annular opening.
  • the first seal further in particular the inner, the first pressure region bounded by the neck of the third pressure region sealing with respect to the neck is formed widening radially outward.
  • the first seal in cross section from the inside, ie viewed from the neck be concave.
  • this extension of the first seal is provided adjacent to the sealing area, must not extend correspondingly in cross section over the entire seal length.
  • the second seal with respect to the neck is formed widening radially inwardly, this described with the same effect as with respect to the first seal. Accordingly, a higher pressure also applies here on the inner side of the second seal than on the outer side (second pressure region), which correspondingly increases the sealing system.
  • the second seal Seen from the inside, i. viewed from the nozzle, the second seal may be provided in convexly curved cross-section.
  • the extension of the second seal is in any case provided adjacent to the sealing area, but can also be formed over the entire extension length of the seal.
  • the one-piece design of the seals is both production as well as easy mounting. The double seal thus created may be fixedly connected to the holding plate, i. be sprayed.
  • the two sealing sections of this double seal can in this case be rooted in a common base region, for example in a base region connected to the retaining plate. From this then extend the sealing portions respectively in the direction of the sealing region of the partition or the nozzle, leaving the connection opening in the region of the partition. If the seals are connected to one another via, for example, transverse webs, corresponding connecting openings are provided in order to connect the facing sealing surfaces to the third pressure region.
  • a further increase in the tightness can be achieved in that a circumferential sealing rib is formed on the holding plate and / or on the partition wall fixed to the housing against which a seal bears in the direction of pressure drop.
  • This is preferably a rigid sealing rib, the further example. Is formed out of the holding plate or partition wall material. It can be associated with only one seal such a sealing rib. Alternatively, two sealing ribs may be provided, for cooperation with the respective associated seal, so for example.
  • a vacuum cleaner 1 in particular household vacuum cleaner, which is designed as a hand-held handle device.
  • This first comprises a base unit 2, with an electric motor, not shown, for a suction / blower unit.
  • a base unit 2 At the base unit 2 a provided for receiving the sucked-up dust, air-impermeable filter cartridge 3 is docked.
  • the base unit 2 has a gooseneck-shaped extension, which extends over the region of the filter cartridge 3. In the area of the free end, this extension forms a plug-in receptacle for a handle 6 of the vacuum cleaner 1. In the region of the free end of the stem 6, an actuating handle 7 is provided.
  • This has a thumb-actuatable setting unit in the form of a slide switch, via which the power of the recorded in the base unit 2 electric motor is adjustable.
  • the base unit 2 is fluidly connected to a header 8.
  • This can be a, a rotating brush having suction nozzle.
  • the suction mouth, not shown, of the attachment 8 is in fluid communication with the filter bag 4 accommodated in the filter cassette 3, for which a flow channel 12 passes through the base unit 2. End side of this flow channel 12 is in a socket 13 via.
  • connection piece 13 is placed in a cassette receptacle formed in a parting plane T between the filter cassette 3 and the base unit 2.
  • This cassette receptacle forms a bottom 14 penetrated by the connecting piece 13 to form a dividing wall 15 between the base unit 2 or the area surrounding the connecting piece 13 and the connected filter cassette 3 or the annular space 16 which is established between the filter cassette 3 and the filter bag 4 used.
  • Plane offset from the partition 15 extends in the illustrated embodiment made of a plastic material retaining plate 9 of the filter bag 4, which has associated with the nozzle 13 of the flow channel 12 an inflow opening 10 for introducing the dust-laden suction air.
  • On the holding plate 9 is lower side, i. facing away from the base unit-side partition wall 15, an air-permeable dust bag 11 is attached.
  • In the operating position of the filter bag 4 is in overhead position in the filter cartridge 3 a; Accordingly, in the suction operation is flowed through from below through the inlet opening 10.
  • the arrangement is further selected so that the dust-laden suction air is sucked through the nozzle 13 passing through the filter bag 4 and passes from here via the annular space 16 between the filter cartridge 3 and filter bag 4 to the downstream fan motor. Accordingly, in the nozzle 13 and further in the bag inside a first pressure range P 1 , which is smaller than the pressure in the second pressure range P 2 , which second pressure range P 2 through the annulus 16 between the filter bag 4 and filter cartridge 3 and further through the partition 15 of the base unit 2 is limited.
  • the pressure in the second pressure range P 2 is less than the ambient pressure (third pressure range P 3 ), which pressure adjusts itself to the nozzle 13, for example, also within the base unit 2.
  • the pressure in the pressure range P 3 can also be the pressure immediately behind the suction fan.
  • seals 17 and 18 which are coaxially aligned coaxially with respect to an inflow opening axis x.
  • a radially inner seal 17 for sealing between the holding plate 9 and nozzle 13 and a radially outer seal 18 for sealing between the holding plate 9 and the partition wall 15 is provided.
  • a passage opening 19 in the partition 15 for throughput of the nozzle 13 is formed enlarged relative to the nozzle diameter, so that circumferentially of the nozzle 13, an annular gap 20 is established.
  • This annular gap represents a connection opening 21, for connecting the pressure chamber P 3 to the annular space 22 left between them by the coaxially arranged seals 17 and 18. Accordingly, the pressure of the pressure region P 3 is in each case on one side of the seals 17 and 18, then continue on the facing each other sealing surfaces. According to the above-described pressure conditions is at these facing surfaces of the seals 17 and 18 always higher pressure than on the side facing away from the annulus 22.
  • the relatively clean ambient air from the pressure region P 3 is either drawn into the dust-laden pressure region P 1 or into the clean gas region (pressure region P 2 ).
  • the pressure range P 1 enters the dust-cleaned pressure range P 2 or even into the clean air range of the pressure range P 3 .
  • FIGS. 2 to 10 show various embodiments of the seals 17 and 18.
  • two individual seals 17 and 18 are provided, each viewed from the nozzle 13 from the outer seal in cross section convex and the inner seal 17 are concave in cross section.
  • the seals 17 and 18 project towards each other in a curved manner, which leads to an improved sealing seat due to the higher pressure applied internally to the pressure region P 3 .
  • the seals 17 and 18 may also be made in one piece, so on, for example, in cross-section forming a U-shape, with a U-opening, which faces the retaining plate 9.
  • the double seal 31 thus created can be molded onto the holding plate 9.
  • the seals 17 and 18 are formed by the U-legs, while the seals connecting the seals 17 and 18 U-web faces the annular gap 20 and the connection opening 21.
  • portions of the seals 17 and 18 31 openings 23 are left in the U-web of the double seal, for connecting the created between the seals 17 and 18 annular space 22 with the pressure range P 3rd
  • Fig. 4 shows an alternative embodiment, in which the inner seal 17 is molded as a circumferential lip seal the end face of the pipe 13. The free end portion of the seal 17 is sealingly on the facing, the inflow opening 10 surrounding the holding plate surface.
  • the outer seal 18 is supported on the partition wall 15, so further plugged.
  • This is a separate injection-sealing part, which, starting from a connection portion 24, carries a leg 25 extending in the direction of the associated holding plate surface.
  • the latter is provided with an integrally formed sealing ring 26, for sealing support on the associated holding plate surface.
  • FIG. 5 A similar embodiment is in Fig. 5 shown.
  • the inner seal 17 is molded as a lip seal on the nozzle 13.
  • the outer seal 18 is present as a plug-in part, with an opening portion of the passage opening 19 comprehensive connection portion 24, which, facing the holding plate 9, merges into a radially outwardly widening in cross-section sealing portion 27.
  • This is designed to be rectilinear in cross section. Its free end lies circumferentially on the facing holding plate surface.
  • There are three levels of sealing namely one between the seal 18 and the holding plate 9, a sealing plane between the seal 18 and the partition wall 15, and a sealing plane between the molded seal 17 and the holding plate. 9
  • Fig. 6 shows an embodiment in which the outer seal 18 is molded like a lip on the holding plate 9, this further with respect to the nozzle 13 radially inwardly widening, for sealing contact with the facing surface of the partition 15th
  • the inner seal 17 is formed in this embodiment as a plug-in part.
  • a circumferential collar 28 comprises the facing end portion of the nozzle 13 outside the wall.
  • the plug assembly is secured by a mantelau touchwand document provided on the neck 13 annular bead 29, which enters into a corresponding annular recess 30 of the collar 28.
  • the gasket 18 extends concavely curved in cross-section from the neck 13, passing through the opening 19 of the partition wall 15, the free end region of the gasket 18 being viewed from the neck 13 extending radially outward to bear against the neck facing holding plate surface.
  • the passage through the partition wall opening 19 takes place while leaving the annular gap 20 provided radially outside the seal 17.
  • the inner seal 17 By forming the inner seal 17 as a plug-in part, this can be replaced in the event of a defect.
  • the immediate arrangement of the outer seal 18 on the retaining plate 9 offers the advantage of a regular renewal of this seal 18 with each filter bag change.
  • the third sealing plane results between inner seal 17 or collar 28 and connecting piece 13.
  • a two seals 17 and 18 forming double seal 31 may be provided. So first is related to Fig. 7 a plug-connectable double seal 31 is formed, for plug assignment to the nozzle 13, in which case a holder is selected according to the embodiment in Fig. 6 ,
  • the section forming the inner seal 17 initially extends under concave curvature, passing through the partition wall opening 19 until it contacts the facing holding plate surface.
  • the coaxial with the inner seal 17 arranged outer seal 18 is connected in the region between the partition wall 15 and retaining plate 9 via a transverse connection 32 with the inner seal 17.
  • This cross-connection 32 is formed web-like in cross section.
  • the transverse connection 32 is circumferentially provided with openings 33, the pressure-moderately connected between the seals 17 and 18 left annular space 22 with the pressure chamber P 3rd
  • seals 17 and 18 in the embodiment according to Fig. 6 are in this embodiment, the seals 17 and 18 in cross-section facing each other arched, which improves the sealing seat of the respective seal against the respective contact surface by the inner higher pressure.
  • the two seals 17 and 18 are connected to one another in a common root region 34, via which root region 34 the double seal 31 designed in this way is attached to the holding plate 9 by injection molding.
  • the outer seal 18 extends in cross section from the neck 13 viewed convex toward the associated contact surface of the partition 15.
  • the inner seal 17 extends from the root portion 34 starting concave in the direction of the end edge of the nozzle 13, to Plug connection with this.
  • two sealing levels are achieved, one between the outer seal 18 and the partition wall 15 and one between the inner seal 17 and the stub 13.
  • an axially projecting in the direction of the nozzle 13 sealing rib 35 may be provided on the holding plate 9, associated with the edge of the inflow opening 10. This is formed in one piece from the holding plate 9 in the illustrated embodiment.
  • This sealing rib 35 supports radially inwardly from the molded in this embodiment, the end edge of the nozzle 13 inner seal 17. Accordingly, this seal 17 is supported in Druckge powerides, which further increases the sealing seat.
  • Such a sealing rib may be further provided, for example, including the outer seal 18 in the associated region of the partition wall 15 in order to achieve a support of the outer seal 18 in Druckge maniques here.
  • the proposed solutions ensure that no raw gas (polluted air) gets into the clean gas (cleaned air) even if a seal is damaged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP11161441A 2007-08-02 2008-07-08 Filterbeutel Active EP2364631B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007036338.0A DE102007036338B4 (de) 2007-08-02 2007-08-02 Filterbeutel
EP08159880A EP2025276B1 (de) 2007-08-02 2008-07-08 Staubsauger mit einem darin angeordneten Filterbeutel sowie Filterbeutel hierzu

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP08159880.7 Division 2008-07-08

Publications (2)

Publication Number Publication Date
EP2364631A1 EP2364631A1 (de) 2011-09-14
EP2364631B1 true EP2364631B1 (de) 2012-11-28

Family

ID=39877784

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11161441A Active EP2364631B1 (de) 2007-08-02 2008-07-08 Filterbeutel
EP08159880A Active EP2025276B1 (de) 2007-08-02 2008-07-08 Staubsauger mit einem darin angeordneten Filterbeutel sowie Filterbeutel hierzu

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08159880A Active EP2025276B1 (de) 2007-08-02 2008-07-08 Staubsauger mit einem darin angeordneten Filterbeutel sowie Filterbeutel hierzu

Country Status (5)

Country Link
EP (2) EP2364631B1 (es)
CN (1) CN101357050B (es)
AT (1) ATE530098T1 (es)
DE (2) DE102007036338B4 (es)
ES (2) ES2373483T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9074622B2 (en) * 2011-11-03 2015-07-07 Techtronic Floor Care Technology Limited Disposable bag and a disposable bag mount bracket for an upright vacuum cleaner
DE102012108390A1 (de) 2012-09-10 2014-03-13 Vorwerk & Co. Interholding Gmbh Staubfilterbeutel
DE102016124030A1 (de) * 2016-12-12 2018-06-14 Festool Gmbh Sauggerät mit einem Filterelement
KR20200073966A (ko) * 2018-12-14 2020-06-24 삼성전자주식회사 진공 청소기와 도킹 스테이션을 포함하는 청소 장치

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392906A (en) 1967-04-11 1968-07-16 Studley Paper Company Inc Vacuum cleaner filter bag
JPS5296967U (es) * 1976-01-20 1977-07-20
JPS5296967A (en) 1976-02-10 1977-08-15 Matsushita Electric Ind Co Ltd Gas treatment apparatus
JPS6041894Y2 (ja) * 1981-03-24 1985-12-20 三菱電機株式会社 電気掃除機
US4364757A (en) * 1981-08-24 1982-12-21 The Hoover Company Vacuum cleaner filter bag collar arrangement
EP0532057B1 (de) 1988-04-29 1997-09-17 Vorwerk & Co. Interholding GmbH Filterbeutel
TR200502089T1 (tr) 2002-12-02 2005-08-22 Ar�El�K Anon�M ��Rket� Elektrikli süpürge.
DE102005007232A1 (de) 2005-02-17 2006-08-31 Melitta Haushaltsprodukte Gmbh & Co Kommanditgesellschaft Staubsaugerbeutel und Verfahren zur Herstellung eines Staubsaugerbeutels
DE102005041811A1 (de) 2005-09-02 2007-03-08 BSH Bosch und Siemens Hausgeräte GmbH Staubsaugerbeutel mit Kunststoffflansch

Also Published As

Publication number Publication date
DE202008018065U1 (de) 2011-08-29
EP2025276A2 (de) 2009-02-18
ATE530098T1 (de) 2011-11-15
EP2025276A3 (de) 2010-05-05
CN101357050B (zh) 2012-05-16
ES2396465T3 (es) 2013-02-21
CN101357050A (zh) 2009-02-04
EP2364631A1 (de) 2011-09-14
DE102007036338A1 (de) 2009-02-05
ES2373483T3 (es) 2012-02-03
EP2025276B1 (de) 2011-10-26
DE102007036338B4 (de) 2022-06-02

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