EP2266450B1 - Blockboden-Filterbeutel für Staubsauger - Google Patents

Blockboden-Filterbeutel für Staubsauger Download PDF

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Publication number
EP2266450B1
EP2266450B1 EP09008280.1A EP09008280A EP2266450B1 EP 2266450 B1 EP2266450 B1 EP 2266450B1 EP 09008280 A EP09008280 A EP 09008280A EP 2266450 B1 EP2266450 B1 EP 2266450B1
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EP
European Patent Office
Prior art keywords
bag
block bottom
filter bag
bottom filter
diffusor
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
EP09008280.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2266450A1 (de
Inventor
Jan Schultink
Ralf Dr. Sauer
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.)
Eurofilters NV
Original Assignee
Eurofilters NV
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41226386&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2266450(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eurofilters NV filed Critical Eurofilters NV
Priority to EP09008280.1A priority Critical patent/EP2266450B1/de
Priority to ES09008280.1T priority patent/ES2607032T3/es
Priority to ES10723954T priority patent/ES2699715T3/es
Priority to CN201080028466.2A priority patent/CN102802486B/zh
Priority to EP10723954.3A priority patent/EP2445382B1/de
Priority to PCT/EP2010/003594 priority patent/WO2010149297A1/de
Priority to US13/377,067 priority patent/US8758465B2/en
Priority to AU2010265115A priority patent/AU2010265115B2/en
Publication of EP2266450A1 publication Critical patent/EP2266450A1/de
Publication of EP2266450B1 publication Critical patent/EP2266450B1/de
Application granted granted Critical
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

Definitions

  • the present invention relates to a block bottom bag for vacuum cleaner, which has in its interior at least one diffuser of strips of material and / or fabrics with elongated flow openings.
  • Such bags are characterized by an excellent dust storage capacity and an extension of the service life.
  • EP 1 787 560 A1 shows flow distributor in the form of attached in the region of the inlet opening of the filter bag boxes or strips of material, which are able to divide the incoming air flow into partial streams and to divert.
  • a second flow distributor complements the function of the first flow distributor. From the DE 20 2008 008 989 U1 and the DE 20 2008 003 248 U1 For example, combinations of two flow distributors with a spacer are known.
  • a filter bag that includes a bag having an interior partitioned into at least two chambers.
  • the subdivision is by a partition defined at three side edges, with a transition between the first and second chambers formed at the fourth side edge.
  • the partition wall is welded to the filter layers only at one side edge for the entire length and is welded at the opposite side to a strip at the upper layer of filter material.
  • the DE 20 2008 007 717 U1 describes a filter bag in which a flat, multi-layer filter insert is arranged in the interior, which is at least partially connected to the filter bag walls.
  • dust is to be stored between the at least two layers of the filter insert.
  • the upper of the two layers can be perforated or slotted.
  • the filter insert can be formed as a continuous strip which is fixed on two opposite edges of the bag.
  • the DE 20 2007 010 692 U1 relates to a filter bag in which extends between the two filter walls, a filling layer of fiber or yarn material, which is connected to both filter walls and is pulled apart during deployment of the bag so that a net-like structure is formed in the bag.
  • Another air distributor is from the DE 10 2006 051 117 A1 known.
  • at least two layers of material are arranged one above the other between the bag walls, the layers having a smaller extent than the two bag walls in a first area direction and having the same extent as the bag walls in the area direction orthogonal to the first area direction.
  • materials microfiber fleece or paper are called.
  • the DE 20 2006 016 304 U discloses a bag with at least one guide element, by means of which the incoming air flow is deflectable.
  • the guide element is fixed adjacent to the inlet opening.
  • a Miele bag already on the market has an arrangement of a deflector mounted just below the inlet opening.
  • This deflection device consists of a sheet which is attached directly to the top of the bag on both sides of the inlet opening. The purpose of this deflection device is to redirect the air flow sucked in through the inlet opening directly in the region of the inlet opening.
  • This deflection device is designed such that, due to a predetermined length or area, it is welded directly to the bag wall at a distance from the inlet opening. The area of this deflector is therefore below about 10% of the bag surface.
  • a block bottom bag having a bag body of single or multilayer filter material, the two opposing, the bag top having an inlet opening or onto which the block bottom containing an inlet opening is folded back and having the bag bottom surface and two side walls folded on the bag bottoms between the panel walls.
  • a block bottom bag is also on the DE 78 04 400 U DE 76 30 890 U as well as the DE 92 09 964 U referenced, which are concerned with the basic structure of a block bottom bag.
  • Another block bottom bag with a closed free end portion and an opposite at least partially closed area and a holding plate is from the DE 103 48 375 A1 known, wherein the bottom of the bag is formed of a plurality of superimposed layers of the bag material.
  • the US 2,848,062 discloses a block bottom bag with an inserted, partially flat, unslotted material layer.
  • a filter bag which has bactericidally formed fingers which are each formed on a strip of material in the interior of the bag.
  • a block bottom bag having a bag front side, a bag rear side and a block bottom which spaces the bag front side and the bag back side to form a bag interior with bag walls made of an air-permeable filter material, the block bottom having an inlet opening for the air to be filtered and inside the block bottom bag at least one diffuser is arranged, which consists of at least two mutually arranged individual material strips and / or sheet-like material structures having elongated flow openings, wherein the at least one diffuser is connected at least one side to the bag wall.
  • a filter bag having a front side, a back and at least three surfaces for generating an inner volume.
  • one of the at least three side surfaces forms the bottom side of the filter bag, while the two remaining side surfaces each connect the outer, the front and the rear bounding edges together, whereby an interior is formed, which defines the volume of the filter bag in the operating state.
  • at least the two side surfaces which are arranged between the front and the back, a folding, which allows a folding of the filter bag such that a flat contact between the front and the back of the filter bag is made possible.
  • either the bottom surface or the front side of the filter bag has an air inflow opening.
  • Such a filter bag unfolds by the incoming air in the operating state itself, such filter bags are therefore called SOS (self-opening bag).
  • SOS self-opening bag
  • stand-up pouches are also referred to as block bottom pouches.
  • the inventively mounted inside the bag diffusers which are formed from strips of material or provided with flow openings fabrics, thereby causing a turbulence of the incoming, loaded with dirt and / or dust particles air.
  • the service life of the bag can be significantly extended.
  • the diffuser of a pliable material is formed from at least two mutually arranged strips of material; but he can too consist of fabrics that have flow openings in the sense of slots within these fabrics. Such fabrics thus have at least one slot or a transection, which is not pronounced throughout the entire sheet, so that at the ends of the sheet, ie where there is no slitting, a cohesion of the fabric is ensured.
  • the geometric shape of the strips of material or of the geometric shapes formed by the flow openings on the sheet is substantially irrelevant in this case;
  • the surface strips can be structured as strips or the flat structures through straight slots, but all other possible geometric shapes on material strips or flat structures are also possible, for example also s-shaped strips or slot guides, but also through holes etc.
  • the filter bags have an excellent dust storage capacity and thus have an increased service life. It can also be observed that blockages in the region of the air inlet of the bag - as is often the case with the bags known from the prior art - could be avoided.
  • the strips of material are arranged movably relative to one another; It is also possible that the material strips are spaced apart from each other or that the flow openings of the fabrics are dimensioned so that the resulting strips of material are spaced from each other.
  • the width of the strips of material 2 mm to a maximum of 50% of the width of the bag top is.
  • Particularly preferred widths of the material strips are in the range between 5 and 35% of the bag width. The same applies to the arrangement of the elongate flow openings in the fabrics to each other, wherein the flow openings define the strip width.
  • the elongated flow openings of the fabrics are linear.
  • the flow openings may be parallel or meander-shaped or zigzag-shaped, furthermore, spiral-shaped linear guides are also conceivable.
  • the line-shaped, elongated flow openings have different lengths within the fabric. This embodiment of the invention comes into play when at least two flow openings are present on the sheet. These flow openings can have different lengths, resulting in improved stability of the diffuser.
  • the at least one diffuser is attached to both sides of the bag wall.
  • the diffuser is thus fixed to the front of the bag or the back of the bag.
  • the fixation is preferably carried out in each case in the end region of the diffuser, so that this is only selectively connected to the bag wall and in the intermediate region due to the pliable material is flexible and by the inflowing Air can be moved.
  • the diffuser has approximately the same length and / or width as the bag front and / or rear side.
  • a fixation of the diffuser in this case can then conveniently be done by the ends of the diffuser are introduced between the front and back of the filter bag and are fixed together with the front and back to the finished bag.
  • the fixation of the diffuser is thus carried out simultaneously with the bonding or welding step for the production of the filter bag itself. Insofar, this possibility of fixation allows an extremely cost-effective and simple production of the filter bag.
  • the diffuser is narrower and / or shorter than the bag front and / or back.
  • the diffuser has a greater length and / or width than the bag front and / or back side and is present folded.
  • the folding of the diffuser is expediently carried out when the length of the diffuser is greater than the dimension of the length and / or width of the filter bag.
  • the folding is then expediently carried out in a zigzag form, wherein, for example, in the case of a diffuser in strip form, a partial overlapping of the strips of the diffuser takes place one above the other. In this respect, an increase of the attack surface for the incoming air is made possible, which leads to a further improvement of the properties of the filter bag.
  • the diffuser in the form of strips of material rotated and / or twisted formed is. Again, there is an increase in the attack surface for the incoming air, with the same advantages come into play, as they have already been described in the folded shape of the diffuser. It is also preferred that the diffuser in the form of strips of material is formed by filament bundles or bundles of film strips. In this embodiment, the strips of material themselves are formed from a plurality of filaments or threads or the like.
  • At least two diffusers can each be arranged relative to one another so that the strips of material and / or the elongated flow openings are not parallel, e.g. orthogonal, but also in deviating arrangements, are arranged to each other.
  • the air streams entering the filter bag can be specifically swirled.
  • the limp materials of the diffuser preferably consist of air-permeable materials and / or of air-impermeable materials.
  • air-impermeable materials are films, for example plastic films (for example PE or PP).
  • air-permeable materials laminates of air-permeable materials and / or flow-apertured air-impermeable materials are preferably used.
  • the composite materials is a construction of a layer of polypropylene spunbonded fabric of about 15 g / m 2 , a layer of crimped polypropylene staple fibers of about 100 g / m 2 and a second final spunbonded layer of again 15 g / m 2 .
  • a layer of polypropylene spunbonded fabric of about 15 g / m 2
  • a layer of crimped polypropylene staple fibers of about 100 g / m 2
  • a second final spunbonded layer of again 15 g / m 2 .
  • the diffuser is connected to the bag wall via a splice and / or welds.
  • the block bottom bag in the operating state on a prismatic geometry, wherein the block bottom forms the base of this prism.
  • the block bottom has a rectangular shape.
  • the block bottom is arranged at an angle to the front of the bag and the back of the bag, wherein the angle is 10 ° to 170 °, preferably 45 ° to 125 °.
  • the block bottom bag is constructed so that stand-alone erecting, i. a quasi complete deployment of the block bottom bag to the operating geometry is independently possible through the air flowing through the inlet opening.
  • the block bottom bag is folded in the transport state so that the block bottom is arranged flat to the front or back of the bag body.
  • the block bottom is folded either on the front or back, depending on whether the block bottom is folded on the front or back, that page also has a fold.
  • the block bottom bag has at least two foldable side surfaces.
  • the diffuser is connected to at least one foldable side surface of the block bottom bag, in particular in the region of the fold.
  • the inside of the filter bag top side has a foil (for example a PE foil) in the area of the air inlet opening.
  • This film may be glued or welded, for example.
  • dust deposits during operation in the area of the inlet opening can be almost completely avoided, so that the closing function of the flap closing the inlet opening is not impaired.
  • this "anti-filter cake film" is further improved by the diffusers according to the invention.
  • FIG. 1 shows a prismatic filter bag 1, the largest areas of the front 2 and the back 3 represent.
  • the bottom of this filter bag represents the block bottom 4, which may also be formed from the bag material of the walls of the bag, such as a nonwoven material.
  • the block bottom 4 can be unreinforced, but also be reinforced for example by a holding plate 6 arranged on it, which is connected to the block bottom 4, for example by welding or gluing.
  • the holding plate 6 serves, for example, the fixation of the block bottom bag 1 in the vacuum cleaner; the retaining plate 6 has the air inlet opening (not shown). In an alternative embodiment, however, the holding plate 6 'may also be mounted on the front side 2 of the block bottom bag 1.
  • the block bottom bag 1 is bounded laterally by the side walls 5.
  • the block bottom bag 1 is preferably formed from a single web of the block bottom bag forming material, which is placed over the longitudinal seam 7 partially folded over after corresponding folding on the front side 2 and connected to the bag 1 by gluing or welding.
  • FIG. 2 a block bottom bag is shown, which in addition to the block bottom 4 has a further block bottom 4 ', wherein the block bottom 4', the bottom of the filter bag.
  • the embodiments apply to FIG. 1 , in particular with regard to the side folding of the side walls 5.
  • FIG. 3 shows the principal unwinding of the double block bottom bag shown in Figure 2.
  • FIG. 2 By appropriate folding and connecting such a web of the filter material can be, for example, in FIG. 2 produce illustrated double block bottom bag 1.
  • the in FIG. 1 made embodiments, wherein the designated outer boundary 7 of the material web of the block bottom bag 1 represent the places where the material web, for example, by welding to the finished block bottom bag 1 to form the longitudinal seam 7.
  • FIG. 4 is a corresponding settlement of the prismatic block bottom bag 1 according to FIG. 1 shown
  • a plan view of the inside of the block bottom bag 1 forming side of the web is shown.
  • Both the inner sides of the side surfaces 2, the side walls 5 and the back 3 are continuously provided with a diffuser 8, which is a having a plurality of parallel slits exhibiting fabric, which may be formed for example of a nonwoven material.
  • the slots of the diffuser, which represent the flow openings, are not continuously formed over the entire surface of the sheet, so that at the edges of the diffuser 8 is a cohesion of the separated material strips separated by the slots.
  • the diffuser 8 can be connected at the edges with, for example, the front side 2 by welding or gluing, so that the diffuser on both sides with the wall of the Block bottom bag 1 is connected.
  • FIG. 5 an alternative embodiment of a double block bottom bag 1 is shown, wherein also here the inner side 2 forming wall of the material web is shown, which can be formed by corresponding folding to the finished block bag 1.
  • settlement of the block bag 1 in this case has a plurality of diffusers 8, which is respectively connected to the corresponding walls of the filter bag 1, for example, the front side 2, the back 3 or the side walls 5.
  • diffusers 8 may be arranged in the region of the block bottom 4.
  • the illustrated diffusers 8 are preferably connected to each other on both sides with the respective wall of the block bottom bag 1, for example by welding the materials together.
  • FIGS. 6 to 9 The filter bags used in the examples are to illustrate the arrangement of the diffusers inside in the following FIGS. 6 to 9 shown.
  • All diffusers are made of strips of a three-ply non-woven material. Particularly preferred is a three-layer composite of a layer of polypropylene spunbonded fabric of about 15 g / m 2 , a layer of crimped polypropylene staple fibers of about 100 g / m 2 and a second final spunbonded layer of again 15 g / m 2 .
  • the cohesion of the composite is done via welding points that connect all layers together.
  • An arrangement of the diffusers means "longitudinally” a vertical arrangement of the diffusers shown in the figures, while “transverse” means a horizontal arrangement of the diffusers within the filter bag.
  • FIGS. 6 to 9 illustrated filter bags are not to scale.
  • the front and back of the bag are about 18 cm wide and 27 cm long.
  • the diffusers were 2 cm from each side, so they were 14 cm wide and 23 cm long. At 11 mm width there were 21 strips.
  • FIGS. 6 to 9 illustrated filter bags (type FP 136 from Vorwerk) were in a series of experiments (carried out with a vacuum cleaner from Vorwerk, type VK136) with defined amounts of DMT standard dust type 8 (50-400 g, each in 50 g interval steps) measured. Reference is made to DIN EN-ISO 60312. The measured values are given for the filter bags in Table 1. The two lower lines of the table show in each case the measured pressure loss in% after uptake of 200 or 400 g of DMT standard dust, this value being the measured pressure value after the respective amount of dust has been measured in relation to the measured pressure with the dust filter bag in the vacuum cleaner was determined without previous recording of dust.
  • Comparative Example 1 * dust filter bag without flow straightener or diffusers, see FIG. 6
  • the dust filter bags according to the invention have a significantly increased service life or dust absorption capacity compared to the filter bags according to Comparative Example 1 *.
  • FIG. 10 the test results obtained with the filter bags according to the invention are compared with the filter bags according to Comparative Example 1 *.
  • a comparison of the measured values obtained with those of Comparative Example 1 * takes place in each case. It can clearly be seen that the filter bags according to the invention are clearly superior to the filter bags according to Comparative Example 1 * in terms of the pressure drop at a previously defined absorbed amount of dust.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
EP09008280.1A 2009-06-24 2009-06-24 Blockboden-Filterbeutel für Staubsauger Active EP2266450B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP09008280.1A EP2266450B1 (de) 2009-06-24 2009-06-24 Blockboden-Filterbeutel für Staubsauger
ES09008280.1T ES2607032T3 (es) 2009-06-24 2009-06-24 Bolsa de filtro de fondo macizado para aspirador de polvo
EP10723954.3A EP2445382B1 (de) 2009-06-24 2010-06-16 Blockboden-Filterbeutel für Staubsauger
CN201080028466.2A CN102802486B (zh) 2009-06-24 2010-06-16 用于真空吸尘器的方底过滤袋
ES10723954T ES2699715T3 (es) 2009-06-24 2010-06-16 Bolsa de filtro de fondo plano para aspiradoras
PCT/EP2010/003594 WO2010149297A1 (de) 2009-06-24 2010-06-16 Blockboden-filterbeutel für staubsauger
US13/377,067 US8758465B2 (en) 2009-06-24 2010-06-16 Block-base bag for vacuum cleaners
AU2010265115A AU2010265115B2 (en) 2009-06-24 2010-06-16 Block-bottom filter bags for vacuum cleaners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09008280.1A EP2266450B1 (de) 2009-06-24 2009-06-24 Blockboden-Filterbeutel für Staubsauger

Publications (2)

Publication Number Publication Date
EP2266450A1 EP2266450A1 (de) 2010-12-29
EP2266450B1 true EP2266450B1 (de) 2016-09-21

Family

ID=41226386

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09008280.1A Active EP2266450B1 (de) 2009-06-24 2009-06-24 Blockboden-Filterbeutel für Staubsauger
EP10723954.3A Active EP2445382B1 (de) 2009-06-24 2010-06-16 Blockboden-Filterbeutel für Staubsauger

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10723954.3A Active EP2445382B1 (de) 2009-06-24 2010-06-16 Blockboden-Filterbeutel für Staubsauger

Country Status (6)

Country Link
US (1) US8758465B2 (zh)
EP (2) EP2266450B1 (zh)
CN (1) CN102802486B (zh)
AU (1) AU2010265115B2 (zh)
ES (2) ES2607032T3 (zh)
WO (1) WO2010149297A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2325775T3 (es) * 2007-08-17 2009-09-16 Eurofilters Holding N.V. Bolsa de filtro de aspiradora.
EP2366319B1 (de) 2010-03-19 2015-05-06 Eurofilters Holding N.V. Staubsaugerfilterbeutel
DE202011108953U1 (de) 2011-12-02 2012-01-19 Branofilter Gmbh Staubfilterbeutel mit einer Staubfängereinlage
DE102011120688B4 (de) 2011-12-02 2019-05-16 Branofilter Gmbh Staubfilterbeutel mit einer Staubfängereinlage
ES2702036T3 (es) 2013-08-09 2019-02-27 Eurofilters Nv Bolsa de filtro de aspiradora con elemento espaciador
USD1019034S1 (en) * 2022-01-07 2024-03-19 Haowen Mo Vacuum cleaner dust storage bag

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DE202008007717U1 (de) 2008-06-10 2008-08-07 Wolf Pvg Gmbh & Co. Kg Filterbeutel

Also Published As

Publication number Publication date
US8758465B2 (en) 2014-06-24
AU2010265115B2 (en) 2016-02-11
WO2010149297A1 (de) 2010-12-29
US20120186204A1 (en) 2012-07-26
CN102802486B (zh) 2015-12-16
AU2010265115A1 (en) 2012-01-19
CN102802486A (zh) 2012-11-28
ES2699715T3 (es) 2019-02-12
EP2445382A1 (de) 2012-05-02
EP2266450A1 (de) 2010-12-29
EP2445382B1 (de) 2018-10-24
ES2607032T3 (es) 2017-03-28

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