EP2263507A1 - Flat bag for a vacuum cleaner - Google Patents

Flat bag for a vacuum cleaner Download PDF

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Publication number
EP2263507A1
EP2263507A1 EP09008064A EP09008064A EP2263507A1 EP 2263507 A1 EP2263507 A1 EP 2263507A1 EP 09008064 A EP09008064 A EP 09008064A EP 09008064 A EP09008064 A EP 09008064A EP 2263507 A1 EP2263507 A1 EP 2263507A1
Authority
EP
European Patent Office
Prior art keywords
flat bag
diffuser
bag
bag according
flat
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.)
Granted
Application number
EP09008064A
Other languages
German (de)
French (fr)
Other versions
EP2263507B1 (en
Inventor
Jan Schultink
Ralf 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41259437&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2263507(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to PL09008064T priority Critical patent/PL2263507T3/en
Priority to ES18196359T priority patent/ES2876248T3/en
Priority to ES17160494T priority patent/ES2716753T3/en
Priority to PL18196359T priority patent/PL3443880T3/en
Priority to EP17160494.5A priority patent/EP3195782B1/en
Priority to EP18196359.6A priority patent/EP3443880B1/en
Priority to DK17160494.5T priority patent/DK3195782T3/en
Priority to DK09008064.9T priority patent/DK2263507T3/en
Priority to ES09008064.9T priority patent/ES2694479T3/en
Priority to PL17160494T priority patent/PL3195782T3/en
Priority to EP09008064.9A priority patent/EP2263507B1/en
Application filed by Eurofilters NV filed Critical Eurofilters NV
Priority to DK18196359.6T priority patent/DK3443880T3/en
Priority to EP10721327.4A priority patent/EP2442702B2/en
Priority to DE202010018626.9U priority patent/DE202010018626U1/en
Priority to PCT/EP2010/003018 priority patent/WO2010145740A1/en
Priority to ES10721327T priority patent/ES2595602T5/en
Priority to CN201080027292.8A priority patent/CN102802484B/en
Priority to US13/377,668 priority patent/US8702828B2/en
Priority to AU2010262163A priority patent/AU2010262163B2/en
Publication of EP2263507A1 publication Critical patent/EP2263507A1/en
Publication of EP2263507B1 publication Critical patent/EP2263507B1/en
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
    • A47L9/102—Dust separators
    • 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 flat bag for vacuum cleaners, which has in its interior at least one forming an intermediate level diffuser of strips of material and / or sheet with elongated flow openings.
  • Such flat bags are characterized by an excellent dust storage capacity and an extension of the service life.
  • EP 1 787 560 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 and the DE 20 2008 003 248 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 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 may be formed as a continuous strip which is fixed to two opposite edges of the bag.
  • the DE 20 2007 010 692 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 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 2006 016 304 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.
  • This filter bag is in Fig. 3 outlined.
  • a flat bag having a bag top side and a bottom side of the bag, the bag walls of which are made of an air-permeable filter material and wherein an inlet opening for the air to be filtered is introduced in the bag top, is provided in which at least inside the flat bag between the top side of the bag and the bottom side of the bag a diffuser forming an intermediate level is arranged which consists of at least two individual material strips arranged relative to one another and / or of flat material structures which have elongated flow openings, the at least one diffuser being connected to the bag wall on at least one side.
  • the diffusers which are formed from strips of material or structures provided with flow openings, thereby cause turbulence of the incoming air laden with dirt and / or dust particles.
  • the service life of the bag can be significantly extended.
  • the flat bags according to the present invention include at least one diffuser in an intermediate plane for swirling the sucked-in dust particles.
  • this intermediate plane is understood to mean a curved or non-curved surface which forms between the wall of the bag Bag top and bottom is arranged.
  • the intermediate plane in the sense of the invention is thus defined by the arrangement of the diffuser in the interior of the filter bag by connecting the diffuser at least 1 place of the bag wall.
  • the diffuser of a limp material is formed either of at least two mutually arranged strips of material, but may also 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 diffuser is arranged in the form of sheets with elongated flow openings in the first plane directly under the filter bag top in the region of the inlet opening, this diffuser is attached to both sides of the bag top and its area is less than 10% on the entire bag surface, which is the width the material strip defined by the slits is ⁇ 50% defined with respect to the diameter of the inflow opening, except.
  • the diffuser is shorter than the total length or width of the flat bag. Both ends of the slit formed as a diffuser are fixed directly to the bag top. The diffuser completely covers the inlet opening.
  • the filter bags have an excellent dust storage capacity and thus have an increased service life. It is also observed that blockages in the region of the air inlet of the bag - as in the known from the prior art bags according to Fig. 3 often the case 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 material strips is 2 mm to a maximum of 50% of the width of the bag top.
  • 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, and 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 in each case to the bag top side or bottom side of the bag.
  • the fixation is preferably carried out in each case in the end region of the diffuser, so that it is only selectively connected to the bag wall and in the intermediate region due to the pliable material is flexible and can be moved by the incoming air.
  • the diffuser has approximately the same length and / or width as the Beutelober- or -unterseite.
  • a fixation of the diffuser in this case can then be conveniently carried out by introducing the ends of the diffuser between the top and bottom of the filter bag be fixed together with the top and bottom of 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 Beutelober- or -unterseite.
  • the diffuser has a greater length and / or width than the bag top or - underside 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.
  • a further embodiment of the present invention provides that the diffuser is designed in the form of strips of material and / or twisted. 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.
  • the diffuser in the form of strips of material is formed by filament bundles or bundles of film strips.
  • 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 diffuser is connected to the bag wall via a splice and / or welds.
  • the flat bag is formed by two webs welded together in the edge region from the filter material.
  • the flat bag can be designed in any geometric shapes, in particular here are quadrangular, hexagonal or octagonal configurations in question.
  • the diffuser is connected to the edge region of the flat bag.
  • the present flat bag according to the invention is a gusseted bag.
  • the diffuser is preferably connected to the side fold of the flat bag.
  • 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.
  • the filter bags used in the examples are shown to illustrate the arrangement of the diffusers inside in the figures shown below.
  • the bags are viewed in projection from the bottom of the bag, looking at the top of the bag.
  • all diffusers are formed from strips of a three layer nonwoven material.
  • 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.
  • inlet opening is arranged asymmetrically with respect to the center of gravity of the filter bag.
  • FIGS. 1 to 21 shown filter bag (type GN from Miele) were measured in a series of experiments (carried out with a vacuum cleaner from Miele, type 5210) with defined amounts of DMT standard dust type 8 (50-400 g, each in 50 g interval steps). 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. Compared with Comparative Examples 1 * (dust filter bag without flow straightener or diffusers, see FIG.
  • 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 Examples 1 * and 2 *.
  • Comparative Example 3 * known from the prior art (see FIG. 3 ) can largely be found as well improved test results in terms of dust storage capacity and service life, while some filter bags according to the invention in terms of dust holding capacity and service life of the filter bag according to Comparative Example 3 * are almost equal.
  • the filter bags according to the invention always have the advantage that blockages in the region of the inlet opening are provided by the very short flow straightener SR1 of the filter bag (see FIG. 3 ) can be almost completely avoided.
  • FIG. 22 selected test results are compared with the filter bags according to the invention the filter bags according to Comparative Examples 1 * to 3 * compared. In each case, a comparison of the measured values obtained with Comparative Examples 1 * to 3 * takes place in the diagram. It can clearly be seen that the filter bags according to the invention are clearly superior to the filter bags according to Comparative Examples 1 * and 2 * with regard to the pressure drop at a previously defined absorbed amount of dust, while with respect to the filter bag according to Comparative Example 3 * even results or slight improvements can be observed. However, it is advantageous in the case of the vacuum cleaner filter bags according to the invention with respect to those of the comparative example 3 * that the filter bags according to the invention are less congestive tend in the area of the inflow opening.

Abstract

The flat bag has a bag upper side and bag lower side, whose bag walls are formed from an air permeable filter material, where an inlet opening is introduced in the bag top for the air to be filtered. A diffuser forming an intermediate level is arranged in the interior of the flat bag between the bag upper side and bag lower side, which comprises two single material strips or flat material structures, which have elongated flow openings. The diffuser is connected to a side of the bag wall.

Description

Flachbeutel für StaubsaugerFlat bag for vacuum cleaner

Die vorliegende Erfindung betrifft einen Flachbeutel für Staubsauger, der in seinem Inneren mindestens einen eine Zwischenebene bildenden Diffusor aus Materialstreifen und/oder Flächengebilden mit länglich geformten Strömungsöffnungen aufweist. Derartige Flachbeutel zeichnen sich durch eine exzellente Staubspeicherfähigkeit und eine Verlängerung der Nutzungsdauer aus.The present invention relates to a flat bag for vacuum cleaners, which has in its interior at least one forming an intermediate level diffuser of strips of material and / or sheet with elongated flow openings. Such flat bags are characterized by an excellent dust storage capacity and an extension of the service life.

Die Erhöhung der Staubspeicherfähigkeit - also Verlängerung der Nutzungsdauer (Standzeit) - einer Staubsaugerfiltertüte ist neben der verbesserten Abscheideleistung (Partikelrückhaltung) ein wesentliches Ziel bei der Entwicklung von Filterbeuteln.The increase of the dust storage capacity - ie extension of the service life (service life) - of a vacuum cleaner filter bag is in addition to the improved separation efficiency (particle retention) an essential goal in the development of filter bags.

Dies lässt sich durch innovative Beutelmaterialien oder auch durch den Einbau von die Luftströmung im Filterbeutel beeinflussenden Materialflächen realisieren. So offenbaren die EP 0 960 645 und die EP 1 795 247 Vliesmaterialien für Staubsaugerbeutel mit besonders guter Staubspeicherkapazität.This can be achieved by innovative bag materials or by the incorporation of the air flow in the filter bag influencing material surfaces. This is what the EP 0 960 645 and the EP 1 795 247 Non-woven materials for vacuum cleaner bags with particularly good dust storage capacity.

EP 1 787 560 zeigt Strömungsverteiler in Form von im Bereich der Einlassöffnung des Filterbeutels angebrachten Kästchen oder Materialstreifen, die in der Lage sind, den eintretenden Luftstrom in Teilströme aufzuteilen und umzulenken. Bei der EP 1 804 635 wird der Gedanke dahingehend ausgebaut, dass ein zweiter Strömungsverteiler die Funktion des ersten Strömungsverteilers ergänzt. Aus der DE 20 2008 008 989 und der DE 20 2008 003 248 sind Kombinationen aus zwei Strömungsverteilern mit einem Beabstandungsmittel bekannt. EP 1 787 560 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. In the EP 1 804 635 The idea is that a second flow distributor complements the function of the first flow distributor. From the DE 20 2008 008 989 and the DE 20 2008 003 248 For example, combinations of two flow distributors with a spacer are known.

Aus der DE 20 2006 016 303 ist ein Filterbeutel bekannt, der einen Beutel mit einem Innenraum umfasst, der in mindestens zwei Kammern unterteilt ist. Bei einer Ausführungsform erfolgt die Unterteilung durch eine Trennwand, die an drei Seitenkanten festgelegt ist, wobei an der vierten Seitenkante ein Übergang zwischen der ersten und der zweiten Kammer gebildet wird. Bei einer anderen Ausführungsform ist die Trennwand nur an einer Seitenkante für die gesamte Länge mit den Filterlagen verschweißt und ist an der gegenüberliegenden Seite mit einem Streifen an der oberen Lage aus Filtermaterial verschweißt.From the DE 20 2006 016 303 For example, a filter bag is known that includes a bag having an interior partitioned into at least two chambers. In one embodiment, 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. In another embodiment, 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.

Die DE 20 2008 007 717 beschreibt einen Filterbeutel bei dem im Innenraum eine flächige, mehrlagige Filtereinlage angeordnet ist, die zumindest teilweise mit den Filterbeutelwänden verbunden ist. Dabei soll Staub zwischen die mindestens zwei Lagen der Filtereinlage eingelagert werden. Dazu kann die obere der beiden Lagen gelocht oder geschlitzt sein. Die Filtereinlage kann als ein durchgehender Streifen ausgebildet sein, der an zwei gegenüberliegenden Rändern des Beutels festgelegt ist.The DE 20 2008 007 717 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. In this case, dust is to be stored between the at least two layers of the filter insert. For this purpose, the upper of the two layers can be perforated or slotted. The filter insert may be formed as a continuous strip which is fixed to two opposite edges of the bag.

Die DE 20 2007 010 692 betrifft einen Filterbeutel, bei dem sich zwischen den beiden Filterwänden eine Fülllage aus Faser- oder Garnmaterial erstreckt, die mit beiden Filterwänden verbunden ist und beim Entfalten des Beutels so auseinander gezogen wird, dass im Beutel ein netzartiges Gebilde entsteht.The DE 20 2007 010 692 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.

Aus der DE 20 2006 019 108 ist ein Staubfilterbeutel mit einem im Inneren angebrachten Stauwandstück bekannt. Dieses Stauwandstück ist so vor der Einlassöffnung des Beutels befestigt, dass es sich im Betrieb ausbaucht und zwei Auslassöffnungen bildet, durch die der Luftstrom umgelenkt wird. Erfindungswesentlich ist, dass das Stauwandstück mit Abstand zur Beutelnaht befestigt ist und sich nicht unter dem Druck des Luftstromes an der hinteren Beutelwand anlegt.From the DE 20 2006 019 108 is known a dust filter bag with an attached inside Stauwandstück. This stowage wall piece is fastened in front of the inlet opening of the bag in such a way that it bulges out during operation and forms two outlet openings through which the air flow is deflected. It is essential to the invention that the retaining wall piece is fastened at a distance from the bag seam and does not bear against the rear bag wall under the pressure of the air flow.

Ein weiterer Luftverteiler ist aus der DE 10 2006 051 117 bekannt. Dabei sind mindestens zwei Materiallagen übereinander zwischen den Beutelwänden angeordnet, wobei die Lagen in einer ersten Flächenrichtung eine geringere Ausdehnung als die beiden Beutelwände aufweisen und in der zur ersten Flächenrichtung orthogonalen Flächenrichtung die gleiche Ausdehnung wie die Beutelwände aufweisen. Als Materialien werden Mikrofaservlies oder Papier genannt.Another air distributor is from the DE 10 2006 051 117 known. In this case, 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. As materials microfiber fleece or paper are called.

Die DE 2006 016 304 offenbart einen Beutel mit mindestens einem Leitelement, mittels dem der eintretende Luftstrom umlenkbar ist. Das Leitelement ist benachbart zur Einströmöffnung fixiert.The DE 2006 016 304 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.

Ein bereits auf dem Markt befindlicher Beutel der Fa. Miele weist eine Anordnung einer Ablenkvorrichtung auf, die unmittelbar unter der Einlassöffnung angebracht ist. Diese Ablenkvorrichtung besteht aus einem Flächengebilde, das unmittelbar mit der Oberseite des Beutels beidseitig von der Einlassöffnung angebracht ist. Der Zweck dieser Ablenkvorrichtung besteht darin, den durch die Einlassöffnung eingesaugten Luftstrom unmittelbar im Bereich der Einlassöffnung umzulenken. Diese Ablenkvorrichtung ist so ausgebildet, dass sie aufgrund einer vorgegebenen Länge bzw. Fläche direkt mit der Beutelwandung beabstandet zur Einlassöffnung angeschweißt ist. Die Fläche dieser Ablenkvorrichtung beträgt deshalb unterhalb ca. 10 % der Beuteloberfläche. Dieser Filterbeutel ist in Fig. 3 skizziert. Problematisch bei diesen Beuteln ist jedoch, dass aufgrund der relativ klein bemessenen Dimensionierung der ersten Ablenkvorrichtung (SR1) es zu Verstopfungen des Beutels durch zwischen der Einströmöffnung und der Ablenkvorrichtung angesammeltem Staub kommen kann, so dass der Beutel unbrauchbar wird. Zudem weist dieser Staubsaugerbeutel noch eine zweite Ebene an Strömungsrichtern auf.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. This filter bag is in Fig. 3 outlined. The problem with these bags, however, is that due to the relatively small dimensioned dimensions of the first deflecting device (SR1), blockages of the bag may occur due to dust accumulated between the inlet opening and the deflecting device, so that the bag becomes unusable. In addition, this vacuum cleaner bag still has a second level of flow straighteners.

Allen zuvor genannten Staubsaugerbeuteln ist jedoch gemein, dass die einströmenden Schmutzpartikel nur unzulänglich verteilt werden, so dass es zu einer vorzeitigen Verstopfung des Staubsaugerbeutels kommt, was letztendlich zu einer verminderten Staubspeicherfähigkeit und einer deutlich unzulänglichen Standzeit des Staubsaugerbeutels führt.All aforementioned vacuum cleaner bags, however, have in common that the inflowing dirt particles are distributed inadequately, so that there is premature clogging of the vacuum cleaner bag, which ultimately leads to a reduced dust storage capacity and a significantly inadequate service life of the vacuum cleaner bag.

Ausgehend hiervon war es Aufgabe der vorliegenden Erfindung, einen Staubsaugerfilterbeutel bereitzustellen, der eine erhöhte Staubspeicherfähigkeit und somit eine Verlängerung der Nutzungsdauer (Standzeit) gewährleistet. Zudem soll im Inneren des Beutels eine Verstopfung der Öffnung verhindert werden.Based on this, it was an object of the present invention to provide a vacuum cleaner filter bag which has an increased dust storage capacity and thus an extension of the service life (service life). guaranteed. In addition, a blockage of the opening should be prevented inside the bag.

Diese Aufgabe wird bezüglich des Flachbeutels für einen Staubsauger mit den Merkmalen des Patentanspruchs 1 gelöst, wobei die abhängigen Patentansprüche vorteilhafte Weiterbildungen darstellen.This object is achieved with respect to the flat bag for a vacuum cleaner with the features of claim 1, wherein the dependent claims represent advantageous developments.

Erfindungsgemäß wird somit ein Flachbeutel mit einer Beuteloberseite und einer Beutelunterseite, dessen Beutelwandungen aus einem luftdurchlässigen Filtermaterial gebildet sind und wobei in der Beuteloberseite eine Einlassöffnung für die zu filtrierende Luft eingebracht ist, bereitgestellt, bei dem im Inneren des Flachbeutels zwischen der Beuteloberseite und der Beutelunterseite mindestens ein eine Zwischenebene bildender Diffusor angeordnet ist, der aus mindestens zwei zueinander angeordneten einzelnen Materialstreifen und/oder aus flächigen Materialgebilden, die länglich geformte Strömungsöffnungen aufweisen, besteht, wobei der mindestens eine Diffusor an mindestens einer Seite mit der Beutelwand verbunden ist.According to the invention, a flat bag having a bag top side and a bottom side of the bag, the bag walls of which are made of an air-permeable filter material and wherein an inlet opening for the air to be filtered is introduced in the bag top, is provided in which at least inside the flat bag between the top side of the bag and the bottom side of the bag a diffuser forming an intermediate level is arranged which consists of at least two individual material strips arranged relative to one another and / or of flat material structures which have elongated flow openings, the at least one diffuser being connected to the bag wall on at least one side.

Die Diffusoren, die aus Materialstreifen oder mit Strömungsöffnungen versehenen Flächengebilden gebildet sind, bewirken dabei eine Verwirbelung der einströmenden, mit Schmutz- und/oder Staubpartikeln beladenen Luft. Somit kann überraschenderweise die Standzeit des Beutels maßgeblich verlängert werden.The diffusers, which are formed from strips of material or structures provided with flow openings, thereby cause turbulence of the incoming air laden with dirt and / or dust particles. Thus, surprisingly, the service life of the bag can be significantly extended.

Somit beinhalten die Flachbeutel gemäß der vorliegenden Erfindung mindestens einen Diffusor in einer Zwischenebene zur Verwirbelung der eingesaugten Staubpartikel. Erfindungsgemäß wird unter dieser Zwischenebene eine gekrümmte oder ungekrümmte Fläche verstanden, die zwischen der die Beutelwandung bildenden Beuteloberseite und -unterseite angeordnet ist. Die Zwischenebene im Sinne der Erfindung wird somit durch die Anordnung des Diffusors im Inneren des Filterbeutels durch Verbinden des Diffusors an mindestens 1 Stelle der Beutelwandung definiert.Thus, the flat bags according to the present invention include at least one diffuser in an intermediate plane for swirling the sucked-in dust particles. According to the invention, this intermediate plane is understood to mean a curved or non-curved surface which forms between the wall of the bag Bag top and bottom is arranged. The intermediate plane in the sense of the invention is thus defined by the arrangement of the diffuser in the interior of the filter bag by connecting the diffuser at least 1 place of the bag wall.

Der Diffusor aus einem biegeschlaffem Material ist dabei entweder aus mindestens zwei zueinander angeordneten Materialstreifen gebildet, kann aber auch aus Flächengebilden bestehen, die Strömungsöffnungen im Sinne von Schlitzen innerhalb dieser Flächengebilde aufweisen. Derartige Flächengebilde weisen somit mindestens einen Schlitz bzw. eine Durchtrennung auf, die jedoch nicht durchgehend über das gesamte Flächengebilde ausgeprägt ist, so dass an den Enden des Flächengebildes, also da, wo keine Schlitzung vorliegt, ein Zusammenhalt des Flächengebildes gewährleistet ist. Die geometrische Form der Materialstreifen bzw. der durch die Strömungsöffnungen gebildeten geometrischen Formen auf dem Flächengebilde ist dabei im Wesentlichen unerheblich; so können die Flächenstreifen beispielsweise als Streifen bzw. die Flächengebilde durch gerade Schlitze strukturiert sein, jedoch sind ebenso alle anderen möglichen geometrischen Formen an Materialstreifen bzw. Flächengebilden möglich, beispielsweise auch s-förmige Streifen bzw. Schlitzführungen, aber auch Durchlochungen etc.The diffuser of a limp material is formed either of at least two mutually arranged strips of material, but may also 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; Thus, for example, 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.

Bevorzugt sind Ausführungsformen des Flachbeutels, bei dem der Diffusor in Form von Flächengebilden mit länglich geformten Strömungsöffnungen in der ersten Ebene direkt unter der Filterbeuteloberseite im Bereich der Einlassöffnung angeordnet ist, wobei dieser Diffusor beidseitig an der Beuteloberseite befestigt ist und dessen Fläche kleiner 10 %, bezogen auf die gesamte Beuteloberfläche, beträgt, wobei die Breite der durch die Schlitzungen definierten Materialstreifen bezüglich des Durchmessers der Einströmungsöffnung zu ± 50 % definiert ist, ausgenommen. Bei dieser bevorzugt ausgenommenen Ausführungsform des Flachbeutels ist somit der Diffusor kürzer als die Gesamtlänge oder Breite des Flachbeutels. Beide Enden des als geschlitztes Flächengebilde ausgebildeten Diffusors sind direkt an der Beuteloberseite fixiert. Der Diffusor überdeckt dabei die Einlassöffnung vollständig.Preferred embodiments of the flat bag, wherein the diffuser is arranged in the form of sheets with elongated flow openings in the first plane directly under the filter bag top in the region of the inlet opening, this diffuser is attached to both sides of the bag top and its area is less than 10% on the entire bag surface, which is the width the material strip defined by the slits is ± 50% defined with respect to the diameter of the inflow opening, except. In this preferred recessed embodiment of the flat bag thus the diffuser is shorter than the total length or width of the flat bag. Both ends of the slit formed as a diffuser are fixed directly to the bag top. The diffuser completely covers the inlet opening.

Überraschenderweise wurde gefunden, dass die Filterbeutel eine hervorragende Staubspeicherkapazität besitzen und damit eine erhöhte Standzeit aufweisen. Ebenso ist zu beobachten, dass Verstopfungen im Bereich des Lufteinlasses des Beutels - wie dies bei den aus dem Stand der Technik bekannten Beuteln gemäß Fig. 3 häufig der Fall sein kann - vermieden werden konnten.Surprisingly, it has been found that the filter bags have an excellent dust storage capacity and thus have an increased service life. It is also observed that blockages in the region of the air inlet of the bag - as in the known from the prior art bags according to Fig. 3 often the case could be avoided.

In einer vorteilhaften erfindungsgemäßen Ausführungsform sind die Materialstreifen beweglich zueinander angeordnet; ebenso ist es möglich, dass die Materialstreifen zueinander beabstandet sind bzw. dass die Strömungsöffnungen der Flächengebilde so dimensioniert sind, dass die sich ergebenden Materialstreifen beabstandet zueinander sind.In an advantageous embodiment of the invention, 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.

Weiter bevorzugt ist, dass die Breite der Materialstreifen 2 mm bis maximal 50 % der Breite der Beuteloberseite beträgt. Besonders bevorzugte Breiten der Materialstreifen liegen dabei in Größenordnungen zwischen 5 und 35 % der Beutelbreite. Gleiches gilt für die Anordnung der länglichen Strömungsöffnungen bei den Flächengebilden zueinander, wobei die Strömungsöffnungen die Streifenbreite definieren.It is further preferred that the width of the material strips is 2 mm to a maximum of 50% of the width of the bag top. 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.

Weiter vorteilhaft ist, wenn die länglich geformten Strömungsöffnungen der Flächengebilde linienförmig sind. Für die länglichen Strömungsöffnungen sind jedoch quasi beliebige geometrische Formen möglich, so können die Strömungsöffnungen beispielsweise parallel oder mäanderförmig bzw. zickzackförmig ausgebildet sein, weiterhin sind ebenso spiralförmige Linienführungen denkbar.It is also advantageous if the elongated flow openings of the fabrics are linear. However, virtually any geometric shapes are possible for the elongated flow openings, for example, the flow openings may be parallel or meander-shaped or zigzag-shaped, and spiral-shaped linear guides are also conceivable.

In einer weiteren vorteilhaften Ausführungsform weisen die linienförmigen, länglichen Strömungsöffnungen unterschiedliche Länge innerhalb des Flächengebildes auf. Diese Ausführung der Erfindung kommt dann zum Tragen, wenn mindestens zwei Strömungsöffnungen auf dem Flächengebilde vorhanden sind. Diese Strömungsöffnungen können dabei unterschiedliche Länge aufweisen, was zu einer verbesserten Stabilität des Diffusors führt.In a further advantageous embodiment, 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.

Bevorzugt ist ebenso, dass der mindestens eine Diffusor beidseitig an der Beutelwandung befestigt ist. Bei dieser Ausführungsform ist somit der Diffusor jeweils an der Beuteloberseite bzw. Beutelunterseite fixiert. Die Fixierung erfolgt dabei bevorzugt jeweils im Endbereich des Diffusors, so dass dieser lediglich punktuell mit der Beutelwandung verbunden und im dazwischen liegenden Bereich aufgrund des biegeschlaffen Materials flexibel ist und durch die einströmende Luft bewegt werden kann.It is also preferred that the at least one diffuser is attached to both sides of the bag wall. In this embodiment, the diffuser is thus fixed in each case to the bag top side or bottom side of the bag. The fixation is preferably carried out in each case in the end region of the diffuser, so that it is only selectively connected to the bag wall and in the intermediate region due to the pliable material is flexible and can be moved by the incoming air.

Vorteilhaft ist ebenso, wenn der Diffusor in etwa die gleiche Länge und/oder Breite wie die Beutelober- bzw. -unterseite aufweist. Eine Fixierung des Diffusors in diesem Fall kann dann zweckmäßigerweise dadurch erfolgen, dass die Enden des Diffusors zwischen die Ober- und Unterseite des Filterbeutels eingebracht werden und zusammen mit der Ober- und Unterseite zum fertigen Beutel fixiert werden. Die Fixierung des Diffusors erfolgt dabei also gleichzeitig mit dem Klebe- oder Schweißschritt zur Herstellung des Filterbeutels selbst. Insofern ermöglicht diese Möglichkeit der Fixierung eine äußerst kostengünstige und einfache Herstellung des Filterbeutels.It is also advantageous if the diffuser has approximately the same length and / or width as the Beutelober- or -unterseite. A fixation of the diffuser in this case can then be conveniently carried out by introducing the ends of the diffuser between the top and bottom of the filter bag be fixed together with the top and bottom of 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.

Als alternative Ausführungsform hierzu ist es jedoch ebenso möglich, dass der Diffusor schmaler und/oder kürzer als die Beutelober- bzw. -unterseite ist. Hier ist es weiter möglich, dass der Diffusor eine größere Länge und/oder Breite wie die Beutelober- bzw. - unterseite aufweist und gefaltet vorliegt. Die Faltung des Diffusors erfolgt zweckmäßigerweise dann, wenn die Länge des Diffusors größer ist als die Abmessung der Länge und/oder Breite des Filterbeutels. Die Faltung erfolgt dann zweckmäßigerweise in Zickzackform, wobei beispielsweise bei einem Diffusor in Streifenform eine teilweise Überlappung der Streifen des Diffusors übereinander erfolgt. Insofern wird eine Erhöhung der Angriffsfläche für die einströmende Luft ermöglicht, was zu einer weiteren Verbesserung der Eigenschaften des Filterbeutels führt.However, as an alternative embodiment, it is also possible that the diffuser is narrower and / or shorter than the Beutelober- or -unterseite. Here it is also possible that the diffuser has a greater length and / or width than the bag top or - underside 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.

Eine weitere Ausführungsform der vorliegenden Erfindung sieht vor, dass der Diffusor in Form von Materialstreifen gedreht und/oder gezwirbelt ausgebildet ist. Auch hier erfolgt eine Erhöhung der Angriffsfläche für die einströmende Luft, wobei die gleichen Vorteile zum Tragen kommen, wie sie bereits bei der gefalteten Form des Diffusors beschrieben wurden.A further embodiment of the present invention provides that the diffuser is designed in the form of strips of material and / or twisted. 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.

Bevorzugt ist ebenso, dass der Diffusor in Form von Materialstreifen durch Filamentbündel oder Bündel von Folienstreifen gebildet ist. Bei dieser Ausführungsform werden die Materialstreifen selbst aus einer Vielzahl von Filamenten oder Fäden oder ähnlichem gebildet.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 For example, the strips of material themselves are formed from a plurality of filaments or threads or the like.

Ebenso können jeweils in der Zwischenebene mindestens zwei Diffusoren jeweils so zueinander angeordnet sein, dass die Materialstreifen und/oder die länglichen Strömungsöffnungen nicht parallel, z.B. orthogonal, aber auch in hiervon abweichenden Anordnungen, zueinander angeordnet sind. Mit einer derartigen Ausführungsform lassen sich die in den Filterbeutel eintretenden Luftströme gezielt verwirbeln.Likewise, in each case in the intermediate plane, 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. With such an embodiment, the air streams entering the filter bag can be specifically swirled.

Die biegeschlaffen Materialien des Diffusors bestehen dabei bevorzugt aus luftdurchlässigen Materialien und/oder aus luftundurchlässigen Materialien. Als luftundurchlässige Materialien kommen dabei insbesondere Folien, beispielsweise Kunststofffolien (z.B. PE oder PP), in Betracht. Als luftdurchlässige Materialien werden bevorzugt Laminate von luftdurchlässigen Materialien und/oder mit Strömungsöffnungen versehene luftundurchlässige Materialien verwendet.The limp materials of the diffuser preferably consist of air-permeable materials and / or of air-impermeable materials. Particularly suitable as air-impermeable materials are films, for example plastic films (for example PE or PP). As air-permeable materials, laminates of air-permeable materials and / or flow-apertured air-impermeable materials are preferably used.

Bevorzugt ist weiterhin, wenn der Diffusor über eine Klebestelle und/oder Schweißstellen mit der Beutelwand verbunden ist.It is furthermore preferred if the diffuser is connected to the bag wall via a splice and / or welds.

In einer weiter bevorzugten Ausführungsform ist der Flachbeutel durch zwei im Randbereich miteinander verschweißte Bahnen aus dem Filtermaterial gebildet.In a further preferred embodiment, the flat bag is formed by two webs welded together in the edge region from the filter material.

Der Flachbeutel kann dabei in beliebigen geometrischen Formen ausgestaltet sein, insbesondere kommen hierbei viereckige, sechseckige oder achteckige Ausgestaltungen in Frage.The flat bag can be designed in any geometric shapes, in particular here are quadrangular, hexagonal or octagonal configurations in question.

Bevorzugt ist ebenso, wenn der Diffusor mit dem Randbereich des Flachbeutels verbunden ist.It is also preferred if the diffuser is connected to the edge region of the flat bag.

Insbesondere ist der vorliegende erfindungsgemäße Flachbeutel ein Seitenfaltenbeutel. Hierbei ist der Diffusor bevorzugt mit der Seitenfalte des Flachbeutels verbunden.In particular, the present flat bag according to the invention is a gusseted bag. In this case, the diffuser is preferably connected to the side fold of the flat bag.

Weitere Vorteile ergeben sich, wenn die Innenseite der Filterbeuteloberseite im Bereich der Lufteinlassöffnung eine Folie (z.B. eine PE-Folie) aufweist. Diese Folie kann beispielsweise aufgeklebt oder - geschweißt sein. Dadurch lassen sich Staubablagerungen beim Betrieb im Bereich der Einlassöffnung nahezu vollständig vermeiden, so dass die Verschlussfunktion der die Einlassöffnung schließenden Klappe nicht beeinträchtigt wird.Further advantages result if 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. As a result, 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.

Die in den Beispielen verwendeten Filterbeutel sind zur Illustration der Anordnung der Diffusoren im Inneren in den nachfolgend abgebildeten Figuren dargestellt. Die Beutel werden dabei in Projektion mit Blick auf die Beuteloberseite von der Beutelunterseite aus betrachtet. Sofern nicht anders angegeben, sind alle Diffusoren aus Streifen eines dreilagigen Vliesmaterials gebildet. Bei den folgenden Figurenbezeichnungen bedeutet eine Anordnung der Diffusoren "längs" eine in den Figuren dargestellte vertikale Anordnung der Diffusoren, während "quer" eine horizontale Anordnung der Diffusoren innerhalb des Filterbeutels bedeutet. Eine diesbezügliche Unterscheidung ist notwendig, da die Einlassöffnung asymmetrisch bezüglich des Schwerpunktes des Filterbeutels angeordnet ist.The filter bags used in the examples are shown to illustrate the arrangement of the diffusers inside in the figures shown below. The bags are viewed in projection from the bottom of the bag, looking at the top of the bag. Unless otherwise stated, all diffusers are formed from strips of a three layer nonwoven material. In the following figure designations, 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. A distinction in this regard is necessary because the inlet opening is arranged asymmetrically with respect to the center of gravity of the filter bag.

Die Figuren zeigen im Einzelnen:

  • Figur 1 zeigt einen Filterbeutel ohne Diffusoren im Inneren (Vergleichsbeispiel 1*).
  • Figur 2 zeigt einen Filterbeutel, der eine zusätzliche durchgehende Vlieslage (270 mm Breite) enthält (nicht erfindungsgemäß, Vergleichsbeispiel 2*). Die Lage D1 ist dabei an zwei Rändern durchgehend befestigt.
  • Figur 3 zeigt den eingangs erwähnten Filterbeutel mit zwei Strömungsrichtern SR1 (5 x 15 mm Folie) und SR2 (5 x 25 mm Vliesstoff), wobei beide Strömungsrichter längs im Filterbeutel angeordnet sind.
  • Figur 4 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (11 x 22 mm) (Beispiel 4).
  • Figur 5 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (22 x 11 mm) (Beispiel 5).
  • Figur 6 zeigt einen erfindungsgemäßen Filterbeutel mit einem aus Polypropylen-Filamenten gebildeten Diffusor (Beispiel 6).
  • Figur 7 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (10 x 11 mm) (Beispiel 7).
  • Figur 8 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (10 x 11 mm) (Beispiel 8).
  • Figur 9 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (3 x 90 mm) (Beispiel 9).
  • Figur 10 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (4 x 67,5 mm) (Beispiel 10).
  • Figur 11 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (5 x 54 mm) (Beispiel 11).
  • Figur 12 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (7 x 38 mm) (Beispiel 12).
  • Figur 13 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (9 x 30 mm) (Beispiel 13).
  • Figur 14 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (11 x 22 mm) (Beispiel 14).
  • Figur 15 zeigt einen erfindungsgemäßen Filterbeutel mit einem längs angeordneten Diffusor (24 x 5 mm) (Beispiel 15).
  • Figur 16 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (3 x 90 mm) (Beispiel 16).
  • Figur 17 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (4 x 54 mm) (Beispiel 17).
  • Figur 18 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (7 x 38 mm) (Beispiel 18).
  • Figur 19 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (9 x 30 mm) (Beispiel 19).
  • Figur 20 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (11 x 22 mm) (Beispiel 20).
  • Figur 21 zeigt einen erfindungsgemäßen Filterbeutel mit einem quer angeordneten Diffusor (24 x 11 mm) (Beispiel 21).
The figures show in detail:
  • FIG. 1 shows a filter bag without diffusers inside (Comparative Example 1 *).
  • FIG. 2 shows a filter bag containing an additional continuous nonwoven layer (270 mm width) (not according to the invention, Comparative Example 2 *). The layer D1 is fastened continuously on two edges.
  • FIG. 3 shows the filter bag mentioned above with two flow straighteners SR1 (5 x 15 mm film) and SR2 (5 x 25 mm nonwoven fabric), both flow straighteners are arranged longitudinally in the filter bag.
  • FIG. 4 shows a filter bag according to the invention with a longitudinally arranged diffuser (11 x 22 mm) (Example 4).
  • FIG. 5 shows a filter bag according to the invention with a transversely arranged diffuser (22 x 11 mm) (Example 5).
  • FIG. 6 shows a filter bag according to the invention with a diffuser formed of polypropylene filaments (Example 6).
  • FIG. 7 shows a filter bag according to the invention with a longitudinally arranged diffuser (10 x 11 mm) (Example 7).
  • FIG. 8 shows a filter bag according to the invention with a transverse diffuser (10 x 11 mm) (Example 8).
  • FIG. 9 shows a filter bag according to the invention with a longitudinally arranged diffuser (3 x 90 mm) (Example 9).
  • FIG. 10 shows a filter bag according to the invention with a longitudinally arranged diffuser (4 x 67.5 mm) (Example 10).
  • FIG. 11 shows a filter bag according to the invention with a longitudinally arranged diffuser (5 x 54 mm) (Example 11).
  • FIG. 12 shows a filter bag according to the invention with a longitudinally arranged diffuser (7 x 38 mm) (Example 12).
  • FIG. 13 shows a filter bag according to the invention with a longitudinally arranged diffuser (9 x 30 mm) (Example 13).
  • FIG. 14 shows a filter bag according to the invention with a longitudinally arranged diffuser (11 x 22 mm) (Example 14).
  • FIG. 15 shows a filter bag according to the invention with a longitudinally arranged diffuser (24 x 5 mm) (Example 15).
  • FIG. 16 shows a filter bag according to the invention with a transverse diffuser (3 x 90 mm) (Example 16).
  • FIG. 17 shows a filter bag according to the invention with a transverse diffuser (4 x 54 mm) (Example 17).
  • FIG. 18 shows a filter bag according to the invention with a transverse diffuser (7 x 38 mm) (Example 18).
  • FIG. 19 shows a filter bag according to the invention with a transverse diffuser (9 x 30 mm) (Example 19).
  • FIG. 20 shows a filter bag according to the invention with a transversely disposed diffuser (11 x 22 mm) (Example 20).
  • FIG. 21 shows a filter bag according to the invention with a transverse diffuser (24 x 11 mm) (Example 21).

Die in den Figuren 1 bis 21 dargestellten Filterbeutel (vom Bautyp GN der Firma Miele) wurden in einer Versuchsreihe (durchgeführt mit einem Staubsauger von Miele, Typ 5210) mit definierten Mengen DMT-Standardstaub Typ 8 (50-400 g, jeweils in 50 g-Intervallschritten) vermessen. Hierzu wird auf die DIN EN-ISO 60312 verwiesen. Die Messwerte sind für die Filterbeutel in Tabelle 1 angegeben. Die beiden unteren Zeilen der Tabelle zeigen jeweils den gemessenen Druckverlust in % nach Aufnahme von 200 bzw. 400 g DMT-Standardstaub auf, wobei dieser Wert durch den gemessenen Druckwert nach Aufnahme der jeweiligen Staubmenge, bezogen auf den gemessenen Druck, bei eingelegtem Staubfilterbeutel im Staubsauger ohne vorherige Aufnahme von Staub ermittelt wurde. Verglichen mit den Vergleichsbeispielen 1* (Staubfilterbeutel ohne Strömungsrichter bzw. Diffusoren, siehe Figur 1) und 2* (Filterbeutel mit durchgängiger Vlieslage, siehe Figur 2), lässt sich eine deutliche Verbesserung des Druckabfalls bzw. Druckverlusts bei allen aufgenommenen Staubmengen beobachten. Insofern weisen die erfindungsgemäßen Staubfilterbeutel eine deutlich erhöhte Standzeit bzw. Staubaufnahmekapazität gegenüber den Filterbeuteln gemäß den Vergleichsbeispielen 1* und 2* auf. Verglichen mit dem aus dem Stand der Technik bekannten Filterbeutel des Vergleichsbeispiels 3* (siehe Figur 3) lassen sich größtenteils ebenso verbesserte Versuchsergebnisse hinsichtlich der Staubspeicherkapazität und Standzeit feststellen, während manche erfindungsgemäßen Filterbeutel hinsichtlich der Staubaufnahmekapazität und Standzeit dem Filterbeutel gemäß Vergleichsbeispiel 3* nahezu ebenbürtig sind. Die erfindungsgemäßen Filterbeutel bieten jedoch gegenüber dem Filterbeutel gemäß Vergleichsbeispiel 3* stets den Vorteil, dass Verstopfungen im Bereich der Einlassöffnung durch den sehr kurz bemessenen Strömungsrichter SR1 des Filterbeutels (siehe Figur 3) nahezu vollständig vermieden werden können.The in the FIGS. 1 to 21 shown filter bag (type GN from Miele) were measured in a series of experiments (carried out with a vacuum cleaner from Miele, type 5210) with defined amounts of DMT standard dust type 8 (50-400 g, each in 50 g interval steps). 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. Compared with Comparative Examples 1 * (dust filter bag without flow straightener or diffusers, see FIG. 1) and 2 * (Filter bag with continuous fleece layer, see FIG. 2 ), can be a significant improvement in pressure drop or pressure loss at all Observe recorded dust levels. In this respect, 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 Examples 1 * and 2 *. Compared with the filter bag of Comparative Example 3 * known from the prior art (see FIG. 3 ) can largely be found as well improved test results in terms of dust storage capacity and service life, while some filter bags according to the invention in terms of dust holding capacity and service life of the filter bag according to Comparative Example 3 * are almost equal. However, compared to the filter bag according to Comparative Example 3 *, the filter bags according to the invention always have the advantage that blockages in the region of the inlet opening are provided by the very short flow straightener SR1 of the filter bag (see FIG. 3 ) can be almost completely avoided.

In Figur 22 sind ausgewählte Versuchsergebnisse mit den erfindungsgemäßen Filterbeuteln den Filterbeuteln gemäß den Vergleichsbeispielen 1* bis 3* gegenüber gestellt. Im Diagramm findet jeweils ein Vergleich der erhaltenen Messwerte mit den Vergleichsbeispielen 1* bis 3* statt. Deutlich ist zu erkennen, dass die erfindungsgemäßen Filterbeutel den Filterbeuteln gemäß den Vergleichsbeispielen 1* und 2* deutlich hinsichtlich des Druckabfalls bei einer zuvor definierten aufgenommenen Staubmenge überlegen sind, während sich bezüglich des Filterbeutels gemäß Vergleichsbeispiel 3* ebenbürtige Ergebnisse bzw. leichte Verbesserungen beobachten lassen. Vorteilhaft bei den erfindungsgemäßen Staubsaugerfilterbeuteln bezüglich denen des Vergleichsbeispiels 3* ist jedoch, dass die erfindungsgemäßen Filterbeutel weniger zu Verstopfungen im Bereich der Einströmungsöffnung neigen.

Figure imgb0001
Figure imgb0002
 In FIG. 22 selected test results are compared with the filter bags according to the invention the filter bags according to Comparative Examples 1 * to 3 * compared. In each case, a comparison of the measured values obtained with Comparative Examples 1 * to 3 * takes place in the diagram. It can clearly be seen that the filter bags according to the invention are clearly superior to the filter bags according to Comparative Examples 1 * and 2 * with regard to the pressure drop at a previously defined absorbed amount of dust, while with respect to the filter bag according to Comparative Example 3 * even results or slight improvements can be observed. However, it is advantageous in the case of the vacuum cleaner filter bags according to the invention with respect to those of the comparative example 3 * that the filter bags according to the invention are less congestive tend in the area of the inflow opening.
Figure imgb0001
Figure imgb0002

Claims (26)

Flachbeutel mit einer Beuteloberseite und einer Beutelunterseite, dessen Beutelwandungen aus einem luftdurchlässigen Filtermaterial gebildet sind und wobei in der Beuteloberseite eine Einlassöffnung für die zu filtrierende Luft eingebracht ist,
dadurch gekennzeichnet, dass im Inneren des Flachbeutels zwischen der Beuteloberseite und der Beutelunterseite mindestens ein eine Zwischenebene bildender Diffusor angeordnet ist, der aus mindestens zwei zueinander angeordneten einzelnen Materialstreifen und/oder aus flächigen Materialgebilden, die länglich geformte Strömungsöffnungen aufweisen, besteht und dass der mindestens eine Diffusor an mindestens einer Seite mit der Beutelwand verbunden ist.Flat bag with a bag top and a bag bottom, the bag walls are formed from an air-permeable filter material and wherein in the bag top an inlet opening for the air to be filtered is introduced,
characterized in that in the interior of the flat bag between the bag top and the bag bottom at least one intermediate level forming diffuser is arranged, which consists of at least two mutually arranged individual strips of material and / or sheetlike material structures having elongated flow openings, and that the at least one Diffuser is connected at least one side to the bag wall. Flachbeutel nach Anspruch 1,
dadurch gekennzeichnet, dass ein Diffusor in Form von Flächengebilden mit länglich geformten Strömungsöffnungen, der im Bereich der Einlassöffnung diese überdeckend angeordnet und an der Beuteloberseite befestigt ist, mit einer Fläche von < 10 %, bezogen auf die gesamte Beuteloberfläche, wobei die Breite der Materialstreifen durch den Durchmesser der Einströmungsöffnung ± 50 % definiert ist, ausgeschlossen ist.Flat bag according to claim 1,
characterized in that a diffuser in the form of sheets with oblong shaped flow openings, which in the region of the inlet opening these arranged overlapping and attached to the bag top, with an area of <10%, based on the entire bag surface, wherein the width of the strip of material the diameter of the inflow opening is defined ± 50% is excluded. Flachbeutel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Materialstreifen beweglich zueinander angeordnet sind.Flat bag according to claim 1 or 2, characterized in that the strips of material are arranged movably relative to one another. Flachbeutel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Materialstreifen zueinander beabstandet sind.Flat bag according to claim 1 or 2, characterized in that the strips of material are spaced from each other. Flachbeutel nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Breite der Materialstreifen mindestens 2 mm und maximal 50 % der Breite der Beuteloberseite beträgt.Flat bag according to at least one of claims 1 to 4, characterized in that the width of the strips of material is at least 2 mm and not more than 50% of the width of the bag top. Flachbeutel nach mindestens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die länglich geformten Strömungsöffnungen der Flächengebilde linienförmig sind.Flat bag according to at least one of claims 1 to 5, characterized in that the oblong shaped flow openings of the fabrics are linear. Flachbeutel nach Anspruch 6, dadurch gekennzeichnet, dass die linienförmigen Strömungsöffnungen parallel und/oder mäanderförmig und/oder zickzackförmig ausgebildet sind.Flat bag according to claim 6, characterized in that the line-shaped flow openings are parallel and / or meander-shaped and / or zigzag-shaped. Flachbeutel nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die linienförmigen, länglichen Strömungsöffnungen unterschiedliche Länge aufweisen.Flat bag according to claim 6 or 7, characterized in that the line-shaped, elongated flow openings have different lengths. Flachbeutel nach mindestens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Diffusor beidseitig an der Beutelwandung befestigt ist.Flat bag according to at least one of claims 1 to 8, characterized in that the diffuser is attached to both sides of the bag wall. Flachbeutel nach mindestens einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Diffusor in etwa die gleiche Länge und/oder Breite wie die Beutelober- bzw. -unterseite aufweist.Flat bag according to at least one of claims 1 to 9, characterized in that the diffuser has approximately the same length and / or width as the Beutelober- or -unterseite. Flachbeutel nach mindestens einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Diffusor schmaler und/oder kürzer als die Beutelober- bzw. -unterseite ist.Flat bag according to at least one of claims 1 to 10, characterized in that the diffuser is narrower and / or shorter than the Beutelober- or -unterseite. Flachbeutel nach mindestens einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Diffusor eine größere Länge und/oder Breite wie die Beutelober- bzw. -unterseite aufweist und gefaltet vorliegt.Flat bag according to at least one of claims 1 to 11, characterized in that the diffuser has a greater length and / or width as the Beutelober- or -unterseite and is present folded. Flachbeutel nach mindestens einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass der Diffusor in Form von Materialstreifen gedreht und/oder gezwirbelt ausgebildet ist.Flat bag according to at least one of claims 1 to 12, characterized in that the diffuser is formed in the form of strips of material and / or twisted. Flachbeutel nach mindestens einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass der Diffusor in Form von Materialstreifen durch Filamentbündel oder Bündel von Folienstreifen gebildet ist.Flat bag according to at least one of claims 1 to 13, characterized in that the diffuser is formed in the form of strips of material by filament bundles or bundles of film strips. Flachbeutel nach mindestens einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass in der Zwischenebene mindestens zwei Diffusoren so zueinander angeordnet sind, dass die Materialstreifen und/oder die länglichen Strömungsöffnungen nicht parallel zueinander angeordnet sind.Flat bag according to at least one of claims 1 to 14, characterized in that in the intermediate plane at least two diffusers are arranged to each other so that the strips of material and / or the elongate flow openings are not arranged parallel to each other. Flachbeutel nach Anspruch 15, dadurch gekennzeichnet, dass die mindestens zwei Diffusoren orthogonal zueinander angeordnet sind.Flat bag according to claim 15, characterized in that the at least two diffusers are arranged orthogonal to each other. Flachbeutel nach Anspruch 15, dadurch gekennzeichnet, dass die mindestens zwei Diffusoren in einer von der orthogonalen abweichenden Anordnung angeordnet sind.Flat bag according to claim 15, characterized in that the at least two diffusers are arranged in a different arrangement from the orthogonal. Flachbeutel nach mindestens einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass die Materialien der Diffusoren aus luftdurchlässigen Materialien und/oder aus luftundurchlässigen Materialien gebildet sind.Flat bag according to at least one of claims 1 to 17, characterized in that the materials of the diffusers are made of air-permeable materials and / or of air-impermeable materials. Flachbeutel nach Anspruch 18, dadurch gekennzeichnet, dass die luftundurchlässigen Materialien eine Folie sind.Flat bag according to claim 18, characterized in that the airtight materials are a film. Flachbeutel nach Anspruch 18 oder 19, dadurch gekennzeichnet, dass die luftdurchlässigen Materialien aus einem Laminat von luftdurchlässigen Materialien und/oder aus mit Strömungsöffnungen versehenen luftundurchlässigen Materialien gebildet sind.Flat bag according to claim 18 or 19, characterized in that the air-permeable materials are formed from a laminate of air-permeable materials and / or provided with flow openings air-impermeable materials. Flachbeutel nach mindestens einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, dass der Diffusor über eine Klebestelle und/oder Schweißstellen mit der Beutelwand verbunden ist.Flat bag according to at least one of claims 1 to 20, characterized in that the diffuser is connected via a splice and / or welds with the bag wall. Flachbeutel nach mindestens einem der Ansprüche 1 bis 21, dadurch gekennzeichnet, dass der Flachbeutel durch zwei im Randbereich miteinander verschweißten Bahnen aus dem Filtermaterial gebildet ist.Flat bag according to at least one of claims 1 to 21, characterized in that the flat bag is formed by two in the edge region welded together webs of the filter material. Flachbeutel nach mindestens einem der Ansprüche 1 bis 22, dadurch gekennzeichnet, dass der Flachbeutel viereckig, sechseckig oder achteckig ist.Flat bag according to at least one of claims 1 to 22, characterized in that the flat bag is quadrangular, hexagonal or octagonal. Flachbeutel nach Anspruch 22 oder 23, dadurch gekennzeichnet, dass der Diffusor mit dem Randbereich des Flachbeutels verbunden ist.Flat bag according to claim 22 or 23, characterized in that the diffuser is connected to the edge region of the flat bag. Flachbeutel nach mindestens einem der Ansprüche 1 bis 21, dadurch gekennzeichnet, dass der Flachbeutel ein Seitenfaltenbeutel ist.Flat bag according to at least one of claims 1 to 21, characterized in that the flat bag is a gusseted bag. Flachbeutel nach Anspruch 25, dadurch gekennzeichnet, dass der Diffusor mit der Seitenfalte des Flachbeutels verbunden ist.Flat bag according to claim 25, characterized in that the diffuser is connected to the side fold of the flat bag.
EP09008064.9A 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner Active EP2263507B1 (en)

Priority Applications (19)

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DK09008064.9T DK2263507T3 (en) 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner
DK18196359.6T DK3443880T3 (en) 2009-06-19 2009-06-19 Flat bag for vacuum cleaner
PL18196359T PL3443880T3 (en) 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner
ES18196359T ES2876248T3 (en) 2009-06-19 2009-06-19 Flat bag for vacuum cleaner
EP18196359.6A EP3443880B1 (en) 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner
DK17160494.5T DK3195782T3 (en) 2009-06-19 2009-06-19 Flat bag for vacuum cleaner
EP17160494.5A EP3195782B1 (en) 2009-06-19 2009-06-19 Sachet for a vacuum cleaner
ES09008064.9T ES2694479T3 (en) 2009-06-19 2009-06-19 Flat bag for a dust vacuum
PL17160494T PL3195782T3 (en) 2009-06-19 2009-06-19 Sachet for a vacuum cleaner
EP09008064.9A EP2263507B1 (en) 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner
PL09008064T PL2263507T3 (en) 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner
ES17160494T ES2716753T3 (en) 2009-06-19 2009-06-19 Flat bag for vacuum cleaner
DE202010018626.9U DE202010018626U1 (en) 2009-06-19 2010-05-17 Flat bag for vacuum cleaner
EP10721327.4A EP2442702B2 (en) 2009-06-19 2010-05-17 Flat bag for a vacuum cleaner
PCT/EP2010/003018 WO2010145740A1 (en) 2009-06-19 2010-05-17 Flat bag for vacuum cleaners
ES10721327T ES2595602T5 (en) 2009-06-19 2010-05-17 Flat bag for a vacuum cleaner
CN201080027292.8A CN102802484B (en) 2009-06-19 2010-05-17 Flat bag for vacuum cleaners
US13/377,668 US8702828B2 (en) 2009-06-19 2010-05-17 Flat bag for vacuum cleaners
AU2010262163A AU2010262163B2 (en) 2009-06-19 2010-05-17 Flat bag for vacuum cleaners

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EP18196359.6A Division EP3443880B1 (en) 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner
EP17160494.5A Division-Into EP3195782B1 (en) 2009-06-19 2009-06-19 Sachet for a vacuum cleaner
EP17160494.5A Division EP3195782B1 (en) 2009-06-19 2009-06-19 Sachet for a vacuum cleaner
EP17160494.5A Previously-Filed-Application EP3195782B1 (en) 2009-06-19 2009-06-19 Sachet for a vacuum cleaner

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EP18196359.6A Active EP3443880B1 (en) 2009-06-19 2009-06-19 Flat bag for a vacuum cleaner
EP17160494.5A Active EP3195782B1 (en) 2009-06-19 2009-06-19 Sachet for a vacuum cleaner
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EP10721327.4A Active EP2442702B2 (en) 2009-06-19 2010-05-17 Flat bag for a vacuum cleaner

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EP (4) EP2263507B1 (en)
CN (1) CN102802484B (en)
AU (1) AU2010262163B2 (en)
DE (1) DE202010018626U1 (en)
DK (3) DK2263507T3 (en)
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Also Published As

Publication number Publication date
ES2694479T3 (en) 2018-12-21
EP2263507B1 (en) 2018-09-19
EP3443880A1 (en) 2019-02-20
PL2263507T3 (en) 2019-02-28
CN102802484A (en) 2012-11-28
US8702828B2 (en) 2014-04-22
AU2010262163A1 (en) 2012-01-19
AU2010262163B2 (en) 2016-03-24
EP2442702B1 (en) 2016-08-31
PL3443880T3 (en) 2021-12-06
DK3443880T3 (en) 2021-07-26
ES2595602T3 (en) 2017-01-02
EP2442702A1 (en) 2012-04-25
PL3195782T3 (en) 2019-07-31
ES2876248T3 (en) 2021-11-12
EP2442702B2 (en) 2023-01-11
EP3443880B1 (en) 2021-05-12
CN102802484B (en) 2016-08-03
ES2595602T5 (en) 2023-03-30
EP3195782A1 (en) 2017-07-26
DE202010018626U1 (en) 2019-05-09
EP3195782B1 (en) 2019-01-09
ES2716753T3 (en) 2019-06-14
DK3195782T3 (en) 2019-04-15
US20120272628A1 (en) 2012-11-01
DK2263507T3 (en) 2019-01-14
WO2010145740A1 (en) 2010-12-23

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