EP3811837B1 - Dust bag for a vacuum cleaner - Google Patents

Dust bag for a vacuum cleaner Download PDF

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Publication number
EP3811837B1
EP3811837B1 EP20202011.1A EP20202011A EP3811837B1 EP 3811837 B1 EP3811837 B1 EP 3811837B1 EP 20202011 A EP20202011 A EP 20202011A EP 3811837 B1 EP3811837 B1 EP 3811837B1
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EP
European Patent Office
Prior art keywords
dust bag
dust
cover
spacer element
chamber
Prior art date
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Application number
EP20202011.1A
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German (de)
French (fr)
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EP3811837A1 (en
Inventor
David Buhl
Kay Van Gen Hassend
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.)
Miele und Cie KG
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Miele und Cie KG
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Publication of EP3811837A1 publication Critical patent/EP3811837A1/en
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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
    • A47L9/12—Dry filters

Definitions

  • the invention relates to a dust bag according to the preamble of claim 1
  • the vacuum cleaner includes a blower for generating a suction air flow and a dust chamber, spatially enclosed by walls, for receiving a dust bag. Furthermore, the vacuum cleaner has a cover, by means of which an at least essentially tight sealing of the dust chamber against the environment is made possible.
  • the dust bag which in the sense of the present application is suitable for being used in the dust chamber of a vacuum cleaner, in turn comprises a collection chamber which is surrounded by a flexible cover.
  • the cover can in particular be formed from two layers of a non-woven fabric, for example welded in an edge region. However, it is also conceivable that the sleeve consists of a (multi-layer) paper.
  • the dust bag includes an inflow opening arranged on the cover.
  • the inflow opening can be provided with a dust seal, for example, which has tabs that can be pushed into a corresponding holder in the dust compartment of the vacuum cleaner.
  • the inflow opening serves to at least indirectly connect the dust bag to a suction channel, by means of which dirt particles can be guided into the dust bag.
  • the cover of the dust bag is provided with a large number of perforations.
  • the suction air flow by means of which the dirt particles can be sucked through the inflow opening into the collection space, can escape through the casing and out of the collection space.
  • the perforations have such a small diameter that at least a majority of the dirt particles are prevented from passing through the perforations. In this way, the suction air flow loaded with dirt particles, which can be guided through the inflow opening into the collection chamber, can be filtered by passing through the casing, with at least a large part of the dirt particles being able to be separated.
  • vacuum cleaners of any type are understood to be vacuum cleaners.
  • the present invention relates to so-called canister vacuum cleaners, in which a housing containing at least the fan and the dust compartment is fluidically connected by means of a flexible hose to a typically metallic suction pipe, which is provided with a floor nozzle at one end.
  • canister vacuum cleaners in which a housing containing at least the fan and the dust compartment is fluidically connected by means of a flexible hose to a typically metallic suction pipe, which is provided with a floor nozzle at one end.
  • hand-held vacuum cleaners in which the housing is typically connected to a floor nozzle by means of a rigid pipe.
  • the dust bag In the course of installing the dust bag, it is placed in the dust chamber of the vacuum cleaner and its inflow opening is usually connected to a floor nozzle of the vacuum cleaner by means of a suction hose and/or a suction pipe.
  • a suction hose and/or a suction pipe In order to ensure that the suction air stream containing the dirt particles flows as exclusively as possible into the dust bag and not past the inflow opening into the dust chamber, the dust bag is typically inserted into a corresponding holder with tabs of a dust seal.
  • the fan of the vacuum cleaner by means of which the suction air flow is generated, is usually arranged opposite.
  • the dust bag is arranged in the dust chamber of the vacuum cleaner in such a way that the suction air flow generated by the fan passes through not only the dust bag itself, but also a flow area of the dust chamber surrounding the dust bag. Consequently, the suction air flow generated by the fan causes a pressure reduction both in the dust chamber and in the collection chamber of the dust bag.
  • the situation is such that the pressure within the collection space drops as the dust bag is filled to an increasing extent, since the sucked-in dirt particles continue to close the perforations in the cover. Consequently, a pressure drop occurs as a result of a filtering effect of the dust bag.
  • a pressure difference between the flow area of the dust chamber and the collecting chamber of the dust bag increases.
  • known vacuum cleaners are generally provided with holding elements, for example in the form of ribs, which are arranged on the walls of the dust compartment and extend from the walls into the dust compartment.
  • the holding elements form a contact surface for the dust bag and thus fulfill a support function.
  • the design of the holding elements in particular their arrangement and geometry, is decisive for optimal functioning of the vacuum cleaner.
  • an optimal design of the holding elements requires that the contact surface is dimensioned in such a way that the dust bag is prevented from being pressed into the gaps created by the holding elements with a view to reducing the suction power.
  • the position of the fan as well as that of the inflow opening determines the suitable design of the holding elements.
  • the holding elements are specially adapted to a specific engine variant and to the dust bags provided by the respective manufacturer.
  • a dust bag from a different brand is used from a different manufacturer than the manufacturer of the vacuum cleaner, it can sometimes happen that a small proportion of the dirt particles are routed past the vacuum bag into the dust compartment and thus lead to contamination of the same.
  • Subsequent cleaning of the dust chamber has turned out to be unnecessary and time-consuming due to the protruding holding elements, so that in practice any contamination of the dust chamber is often accepted, including the resulting hygiene deficiencies.
  • the visual appearance of the dust chamber is also marred by the holding elements.
  • the EP 2 502 538 B1 provides a dust bag, the walls of which are connected to one another by means of a connecting device. Provision is also made for at least one wall to be provided with surface folds which, when the vacuum cleaner is in operation, form against an outer surface of the dust bag due to the flow of suction air.
  • the surface folds should be suitable for increasing the surface area of the dust bag, in order to thereby bring about a higher dust holding capacity.
  • the distance between the walls should be adjustable by means of the connecting device in such a way that an optimal unfolding of the surface folds is made possible.
  • the FR 2 366 866 A1 discloses a dust bag for a vacuum cleaner with a cover that is provided with a number of perforations so that a suction air flow, by means of which dirt particles can be sucked through the inflow opening into the collection space, can escape through the cover and out of the collection space.
  • a spacer element is arranged on the outside of the cover, which, starting from the outer lateral surface, extends in a direction away from the cover, so that the cover is spaced from the wall of the dust compartment.
  • the EP 2 502 538 B1 discloses a dust bag having a sleeve which forms folds on the outside thereof. These folds are suitable for spacing the dust bag in sections from a wall of the dust chamber.
  • the present application is therefore based on the object of overcoming the aforementioned disadvantages and of enabling simplified cleaning of the dust compartment of the vacuum cleaner.
  • the dust bag according to the invention is characterized by at least one spacer element which is arranged on the cover and which, starting from an outer surface of the cover, extends in a direction away from the cover, so that the cover can be moved by means of the spacer element during installation of the dust bag in a dust chamber of a vacuum cleaner can be kept at a distance, at least in some areas, from a wall of the dust chamber.
  • the dust bag according to the invention has many advantages.
  • the spacer element prevents the dust bag from being "sucked" onto the wall of the vacuum cleaner, at least in certain areas, as a result of the pressure difference described above between the flow area and the collection chamber of the dust bag.
  • the entire cover of the dust bag can preferably be used to collect the dirt particles that have been sucked in.
  • the spacer element thus fulfills the spacer function achieved by the known holding elements.
  • the spacer element is advantageously arranged on the dust bag and therefore not on a wall of the dust chamber of the vacuum cleaner. The need for holding elements arranged on the wall of the dust chamber, as known from the prior art, is thus eliminated at least in areas of the dust bag which are provided with one or more spacer elements.
  • the dust bag is provided with a multiplicity of spacer elements which are distributed at least in regions on the casing.
  • the dust bag preferably has so many spacer elements that the formation of known holding elements in the dust chamber of the vacuum cleaner can be completely dispensed with.
  • simplified cleaning of the dust chamber can be achieved, since the wall of the dust chamber can be designed in particular to be smooth and without projections. Such a wall can be cleaned particularly easily using a cleaning cloth.
  • the visual appearance of the dust chamber is positively influenced.
  • a preferred embodiment provides that at least some of the spacer elements are arranged on the casing in such a way that together they form a strip of spacer elements.
  • the arrangement of the spacer elements in a strip is particularly advantageous in particular with regard to a supporting force of the same.
  • the dust bag can be supported particularly well against unintentional suction as a result of the prevailing pressure differences.
  • the Spacer elements are arranged in such a way that they follow a geometry predetermined by the known holding elements. It is therefore conceivable that the geometry of the holding elements is, so to speak, transferred as a mirror image to the cover of the dust bag.
  • the geometry already adapted to the respective model of the vacuum cleaner can thus be simply adopted.
  • the spacer elements according to the invention thus fulfill the spacer function of the holding elements in an analogous manner, but lead to an improvement in the dust compartment of the vacuum cleaner with regard to simplified cleaning and the visual appearance.
  • spacer elements are arranged at least on an underside of the cover, which faces a floor of the dust chamber when the dust bag is properly inserted into the dust chamber of the vacuum cleaner. Furthermore, according to a further feature of the invention, it is provided that spacer elements are arranged at least on a side section of the cover, which faces a side wall of the dust chamber when the dust bag is inserted as intended into the dust chamber of the vacuum cleaner. It is also conceivable that the dust bag is provided with spacer elements completely, ie on all its sides. As a result, the arrangement of ribs or similar holding structures on the walls of the dust chamber can be dispensed with entirely.
  • the at least one spacer element preferably all spacer elements, is designed to be so stiff that it is suitable for locally supporting the cover of the dust bag when it is empty, so that the cover is in an effective range of the spacer element by means of of the spacer element can be kept at a distance from a wall of the dust chamber.
  • the spacer element is nevertheless deformable in such a way that when the dust bag is in a filling state in which the dust bag is filled with dirt particles to such a degree that it should be changed, the spacer element "collapses", thereby increasing the distance between the cover and the wall of the dust chamber is reduced in the effective range of the spacer element, preferably the cover of the dust bag rests against the associated wall of the dust chamber of the vacuum cleaner.
  • the dust bag is typically in its empty state prior to first use. In this state, the dust bag is free of dirt particles.
  • the empty state of the dust bag within the meaning of the present application is also understood to mean the state in which the same is neither empty, i.e. free of dirt particles, nor filled in such a way that further absorption of dirt particles is at least greatly reduced. Rather, the empty state is also an "intermediate state" in which the dust bag intended for picking up dirt particles.
  • the filling state of the dust bag however, the same is filled with dirt particles in such a way that the suction power of the vacuum cleaner is reduced to such an extent that the intake of further dirt particles is at least greatly reduced, since the suction air flow can only penetrate the perforations of the cover with difficulty. When the filling level is reached, the dust bag should be changed.
  • the spacer element In the empty state of the dust bag, the spacer element enables the dust bag to be supported against the walls of the dust chamber.
  • the spacer element is designed to be so rigid that it can carry the dead weight of the dust bag and the compressive force resulting from the pressure drop occurring on the cover of the dust bag into the wall of the dust chamber.
  • the pressure difference between the collection chamber and the through-flow chamber causes the dust bag to be sucked against the spacer elements, which increases as the dust bag is filled to an increasing extent.
  • the dead weight of the dust bag increases due to the dirt particles that accumulate in it.
  • the spacer element buckles elastically, for example in the middle.
  • one end of the spacer element yields elastically from a contact point on the wall of the dust chamber, which the end of the spacer element touches in the empty state.
  • the spacer element is preferably dimensioned in such a way that this buckling or yielding occurs as soon as the dust bag has reached its filling level. In any case, this reduces the distance between the cover and the associated wall of the dust chamber, preferably to zero. The result is that the cover comes into contact with the wall of the dust compartment, which leads to a reduction in the suction power, which is indicated to the user, for example, by means of a dust bag change indicator.
  • the pressure drop occurs continuously.
  • this has turned out to be problematic, particularly with regard to vacuum cleaners with a low power consumption.
  • the dust bag change indicator Due to the already low pressure differences between the collection space and the flow area of the dust space, the dust bag change indicator generally cannot detect when the dust bag has reached its maximum filling level.
  • the buckling of the spacer elements according to the invention leads to an abrupt drop in pressure. It has been found that a sudden drop in pressure can be detected particularly well by the dust bag change indicator of a vacuum cleaner with a low power consumption.
  • the fill level of the dust bag can also be displayed by the dust bag change indicator to the user of vacuum cleaners with low power consumption. The user of the vacuum cleaner is thus informed that the dust bag needs to be changed.
  • An advantageous embodiment of the invention provides that at least one spacer element, preferably all spacer elements, are nub-shaped or bristle-shaped, with a length of a respective spacer element preferably exceeding its diameter by at least 10 times, preferably at least 30 times. It has been found that the elongated configuration of the spacer elements has the property of buckling in a particularly advantageous manner when a certain external force is applied. A force required for this depends on the ratio between the length and the diameter of the spacer element and on the material of the spacer element. Consequently, the above design of the spacer element allows a change interval of the dust bag to be determined beforehand.
  • a length of the spacer element is preferably at least 5 mm, preferably at least 10 mm, more preferably at least 15 mm. It has been found that such a length of the spacer element is particularly well suited to achieving the required distance between the dust compartment and the dust bag and also leads to a suitable replacement interval.
  • a further embodiment of the invention also provides that the spacer element is formed from a flexible plastic, in particular polypropylene or a thermoplastic elastomer.
  • the change interval can thus also be determined by means of a suitable selection of the material of the spacer element.
  • the above materials are particularly easy to attach to a dust bag, for example by means of the hot-melt process.
  • one end of the spacer element is heated to a temperature at which deformation of the material is made possible. This end is placed on the outer surface of the shell of the spacer. When the material cools down, a non-positive connection is made with the shell.
  • a particularly advantageous further development of the dust bag according to the invention provides that the spacer element is impermeable to air.
  • the spacer element is also sucked against the wall of the dust chamber and as a result no longer contributes to supporting the dust bag.
  • the stability of the spacer element is also improved.
  • an advantageous embodiment of the invention provides that the spacer element can be bent reversibly. It is conceivable that the dust bag is filled unevenly at times during filling, as a result of which the dust bag would be exposed to a higher local load. In order to prevent the spacer element from staying permanently in a bent position in this case - and thus reducing the suction power of the vacuum cleaner - it is particularly advantageous if the spacer element can be bent reversibly, so that the same can therefore return to its original shape as soon as the dirt particles evenly distributed in the anther.
  • FIG. 1 shows a vacuum cleaner 2.
  • the vacuum cleaner 2 has a housing 17 , which delimits an interior space 18 and can be closed by means of a cover 16 at least essentially sealingly against the environment.
  • a blower 15 and a spatially bordered by walls 9 dust chamber 8 for receiving a dust bag 1 are arranged in the interior 18 of the vacuum cleaner 2.
  • a suction air flow is generated by means of the blower 15 , which causes a mobilization and a removal of the dirt particles located on a floor surface 19 of a room 20 to be cleaned.
  • the vacuum cleaner 2 comprises a floor nozzle 21 which is connected in terms of flow to the blower 15 by means of a suction pipe 22 and an adjacent suction hose 23 .
  • the dirt particles are guided from the floor nozzle 21 via the suction tube 22 and the suction hose 23 into the dust bag 1 and stored there.
  • a dust bag replacement display 24 indicates to a user of the vacuum cleaner 2 that the dust bag 1 has reached a maximum capacity.
  • a first embodiment of a dust bag 1 according to the invention is in the Figures 2 to 5 shown.
  • the dust bag 1 according to the invention comprises a collection space 4 surrounded by a flexible cover 3 and an inflow opening 5 arranged in the cover 3 .
  • the inflow opening 5 is provided with a dust seal 25 .
  • the dust seal 25 is made of cardboard and has two tabs extending from the inflow opening 5 .
  • the dust bag 1 is inserted into the dust chamber 8 when the vacuum cleaner 2 is put into operation.
  • the tabs of the dust seal 25 can be pushed into a holder in the dust chamber 8 (not shown separately in the figures) in order to fix the dust bag 1 in the dust chamber 8 and at the same time ensure that the suction air flow containing the dirt particles only flows through the dust bag 1 .
  • the dust bag 1 does not fill the dust chamber 8 completely, so that there is a flow area 26 which extends from an outer lateral surface 7 of the dust bag 1 to the walls 9 of the dust chamber 8 .
  • the suction air flow generated by the blower 15 causes the dirt particles to be sucked in from the floor nozzle 21 into the collection space 4 of the dust bag 1.
  • the cover 3 of the dust bag 1 is made of a nonwoven fabric and has a large number of perforations. The perforations of the cover 3 have such a small diameter that at least a major part of the dirt particles is prevented from passing through the perforations, so that the dirt particles are held in the dust bag 1 and thus separated from the suction air flow.
  • the suction air flow can escape through the perforations of the cover 3 from the collection space 4 into the through-flow area 26 of the dust space 8 .
  • the perforations of the cover 3 are increasingly blocked by the dirt particles, so that the dust bag 1 causes a pressure drop in the dust chamber 8 .
  • the shell 3 is provided in some areas with a multiplicity of spacer elements 6 which, starting from the outer lateral surface 7 of the shell 3 , extend in a direction away from the shell 3 .
  • the spacer elements 6 are, as in figure 5 shown, shaped like bristles and have a length 12 that exceeds a diameter 13 by at least 10 times.
  • the spacer elements 6 are made of a flexible plastic and are impermeable to air.
  • the spacer elements 6 support the cover 3 of the dust bag 1 at a distance 14 against the walls 9 of the dust chamber 8 in order to prevent the dust bag 1 from being sucked in and thereby reducing the suction power.
  • FIGS 6 and 7 show a second embodiment of a dust bag 1 according to the invention.
  • the dust bag 1 is basically constructed analogously to the dust bag 1 described above and differs only in the design of the spacer elements 6.
  • the spacer elements 6 are in the form of loops.
  • a plastic is extruded and deposited in the plastic state at certain points on the outer lateral surface 7 of the dust bag 1 .
  • the resulting loops are on the one hand, as in figure 7 shown, punctiform fixed to the envelope of the anther.
  • the loops stand as in figure 6 shown, selectively with the floor 10 of the dust chamber 8 in contact.
  • the spacer elements 6 fulfill a supporting function in order to prevent the casing 3 from being sucked in.
  • the pressure differences and a force on the loops 6 caused by the increasing dead weight deviate from the wall 9 of the dust chamber 8 in such a way that the cover 3 of the dust bag 1 can be sucked onto the walls 9 of the dust chamber 8 .
  • the dust bag change indicator 24 signals to the user that the dust bag 1 has been filled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Description

Die Erfindung betrifft einen Staubbeutel gemäß dem Oberbegriff von Anspruch 1The invention relates to a dust bag according to the preamble of claim 1

Der Staubsauger umfasst ein Gebläse zur Erzeugung eines Saugluftstroms sowie einen von Wandungen räumlich eingefassten Staubraum zur Aufnahme eines Staubbeutels. Ferner weist der Staubsauger einen Deckel auf, mittels dessen ein zumindest im Wesentlichen dichtes Verschließen des Staubraums gegen eine Umgebung ermöglicht ist. Der Staubbeutel, welcher im Sinne der vorliegenden Anmeldung dazu geeignet ist, in den Staubraum eines Staubsaugers eingesetzt zu werden, umfasst seinerseits einen Sammelraum, der von einer flexiblen Hülle eingefasst ist. Die Hülle kann insbesondere aus zwei, beispielsweise in einem Randbereich verschweißten Lagen aus einem Vliesstoff gebildet sein. Ebenso ist jedoch auch vorstellbar, dass die Hülle aus einem (mehrlagigen) Papier besteht. Ferner umfasst der Staubbeutel eine an der Hülle angeordnete Einströmöffnung. Die Einströmöffnung kann hierbei beispielsweise mit einem Staubverschluss versehen sein, welcher Laschen aufweist, die in eine entsprechende Halterung im Staubraum des Staubsaugers einschiebbar sind. Die Einströmöffnung dient zur zumindest mittelbaren Verbindung des Staubbeutels mit einem Saugkanal, mittels dessen Schmutzpartikel in den Staubbeutel leitbar sind. Die Hülle des Staubbeutels ist mit einer Vielzahl von Perforationen versehen. Hierdurch kann der Saugluftstrom, mittels dessen die Schmutzpartikel durch die Einströmöffnung hindurch in den Sammelraum saugbar sind, durch die Hülle hindurch aus dem Sammelraum entweichen. Dabei weisen die Perforationen einen derart geringen Durchmesser auf, dass ein Durchtritt zumindest eines überwiegenden Anteils der Schmutzpartikel durch die Perforationen hindurch verhindert ist. Auf diese Weise kann der mit Schmutzpartikeln beladene Saugluftstrom, der durch die Einströmöffnung hindurch in den Sammelraum leitbar ist, mittels Durchtritts durch die Hülle gefiltert werden, wobei zumindest ein Großteil der Schmutzpartikel abscheidbar ist.The vacuum cleaner includes a blower for generating a suction air flow and a dust chamber, spatially enclosed by walls, for receiving a dust bag. Furthermore, the vacuum cleaner has a cover, by means of which an at least essentially tight sealing of the dust chamber against the environment is made possible. The dust bag, which in the sense of the present application is suitable for being used in the dust chamber of a vacuum cleaner, in turn comprises a collection chamber which is surrounded by a flexible cover. The cover can in particular be formed from two layers of a non-woven fabric, for example welded in an edge region. However, it is also conceivable that the sleeve consists of a (multi-layer) paper. Furthermore, the dust bag includes an inflow opening arranged on the cover. The inflow opening can be provided with a dust seal, for example, which has tabs that can be pushed into a corresponding holder in the dust compartment of the vacuum cleaner. The inflow opening serves to at least indirectly connect the dust bag to a suction channel, by means of which dirt particles can be guided into the dust bag. The cover of the dust bag is provided with a large number of perforations. As a result, the suction air flow, by means of which the dirt particles can be sucked through the inflow opening into the collection space, can escape through the casing and out of the collection space. The perforations have such a small diameter that at least a majority of the dirt particles are prevented from passing through the perforations. In this way, the suction air flow loaded with dirt particles, which can be guided through the inflow opening into the collection chamber, can be filtered by passing through the casing, with at least a large part of the dirt particles being able to be separated.

Im Sinne der vorliegenden Erfindung werden Staubsauger jeglicher Art als Staubsauger verstanden. Insbesondere betrifft die vorliegende Erfindung sogenannte Bodenstaubsauger, bei denen ein Gehäuse, welches zumindest das Gebläse und den Staubraum enthält, mittels eines flexiblen Schlauchs mit einem typischerweise metallischen Saugrohr, welches an einem Ende mit einer Bodendüse versehen ist, strömungsmäßig verbunden ist. Ebenso sind gemäß der vorliegenden Erfindung auch sogenannte Handstaubsauger umfasst, bei denen typischerweise das Gehäuse mittels eines starren Rohres mit einer Bodendüse verbunden ist.For the purposes of the present invention, vacuum cleaners of any type are understood to be vacuum cleaners. In particular, the present invention relates to so-called canister vacuum cleaners, in which a housing containing at least the fan and the dust compartment is fluidically connected by means of a flexible hose to a typically metallic suction pipe, which is provided with a floor nozzle at one end. Also included according to the present invention are so-called hand-held vacuum cleaners, in which the housing is typically connected to a floor nozzle by means of a rigid pipe.

Im Zuge einer Installation des Staubbeutels wird der selbige in den Staubraum des Staubsaugers eingelegt und hierbei in aller Regel mit seiner Einströmöffnung strömungsmäßig mittels eines Saugschlauchs undloder ein Saugrohr mit einer Bodendüse des Staubsaugers verbunden. Um hierbei sicherzustellen, dass der mit den Schmutzpartikeln behaftete Saugluftstrom möglichst ausschließlich in den Staubbeutel und nicht an der Einströmöffnung vorbei in den Staubraum strömt, wird der Staubbeutel typischerweise mit Laschen eines Staubverschlusses in eine entsprechende Halterung eingesetzt. Üblicherweise ist gegenüberliegend das Gebläse des Staubsaugers angeordnet, mittels dessen der Saugluftstrom erzeugt wird. In aller Regel ist der Staubbeutel hierbei derart in dem Staubraum des Staubsaugers angeordnet, dass die von dem Gebläse erzeugte Saugluftströmung nicht nur den Staubbeutel selbst, sondern auch einen den Staubbeutel umgebenden Durchströmungsbereich des Staubraums durchsetzt. Folglich bewirkt der mittels des Gebläses erzeugte Saugluftstrom eine Druckminderung sowohl in dem Staubraum als auch in dem Sammelraum des Staubbeutels. Dabei verhält es sich so, dass der Druck innerhalb des Sammelraums bei zunehmendem Füllgrad des Staubbeutels sinkt, da die eingesaugten Schmutzpartikel die Perforationen der Hülle fortlaufend weiter verschließen. Mithin tritt infolge einer Filterwirkung des Staubbeutels ein Druckabfall auf. Bei zunehmendem Füllgrad des Staubbeutels steigt somit eine Druckdifferenz zwischen dem Durchströmungsbereich des Staubraums und dem Sammelraum des Staubbeutels. Folge ist, dass die Hülle des Staubbeutels an Wandungen des Staubraums des Staubsaugers gesogen wird, wodurch ein Durchtritt des Saugluftstroms in Bereichen, die unmittelbar an einer Wandung des Staubraums anliegen, erheblich erschwert wird und mithin eine Verminderung der Saugleistung des Staubsaugers bewirkt, die einem Verwender des Staubsaugers in der Regel mittels einer Staubbeutelwechselanzeige angezeigt wird.In the course of installing the dust bag, it is placed in the dust chamber of the vacuum cleaner and its inflow opening is usually connected to a floor nozzle of the vacuum cleaner by means of a suction hose and/or a suction pipe. In order to ensure that the suction air stream containing the dirt particles flows as exclusively as possible into the dust bag and not past the inflow opening into the dust chamber, the dust bag is typically inserted into a corresponding holder with tabs of a dust seal. The fan of the vacuum cleaner, by means of which the suction air flow is generated, is usually arranged opposite. As a rule, the dust bag is arranged in the dust chamber of the vacuum cleaner in such a way that the suction air flow generated by the fan passes through not only the dust bag itself, but also a flow area of the dust chamber surrounding the dust bag. Consequently, the suction air flow generated by the fan causes a pressure reduction both in the dust chamber and in the collection chamber of the dust bag. The situation is such that the pressure within the collection space drops as the dust bag is filled to an increasing extent, since the sucked-in dirt particles continue to close the perforations in the cover. Consequently, a pressure drop occurs as a result of a filtering effect of the dust bag. As the degree of filling of the dust bag increases, a pressure difference between the flow area of the dust chamber and the collecting chamber of the dust bag increases. The result is that the cover of the dust bag is sucked against the walls of the dust chamber of the vacuum cleaner, making it considerably more difficult for the suction air flow to pass through in areas that are directly adjacent to a wall of the dust chamber and thus causing a reduction in the suction power of the vacuum cleaner, which a user of the vacuum cleaner is usually displayed by means of a dust bag change indicator.

Zur Umgehung dieses Problems sind bekannte Staubsauger in aller Regel mit Halteelementen, beispielsweise in Form von Rippen, versehen, welche an den Wandungen des Staubraums angeordnet sind und sich ausgehend von den Wandungen in den Staubraum erstrecken. Die Halteelemente bilden dabei eine Auflagefläche für den Staubbeutel und erfüllen somit eine Stützfunktion. Für eine optimale Funktionsweise des Staubsaugers ist die Auslegung der Halteelemente, insbesondere deren Anordnung sowie die Geometrie, entscheidend. Einerseits ist es erstrebenswert, die Auflagefläche gering zu halten, um die äußere Mantelfläche des Staubbeutels nicht zusätzlich zu verschließen und hierdurch eine Verminderung der Saugleistung zu bewirken. Andererseits erfordert eine optimale Auslegung der Halteelemente jedoch, dass die Auflagefläche derart dimensioniert ist, dass ein Eindrücken des Staubbeutels in durch die Halteelemente erzeugte Zwischenräume im Hinblick auf eine Verminderung der Saugleistung verhindert wird. Dabei bestimmt die Position des Gebläses wie auch die der Einströmöffnung die geeignete Auslegung der Halteelemente. Zudem können insbesondere rippenaratige Halteelemente in Richtung der Saugluftströmung angeordnet sein, sodass sie letztere möglichst wenig behindern.To circumvent this problem, known vacuum cleaners are generally provided with holding elements, for example in the form of ribs, which are arranged on the walls of the dust compartment and extend from the walls into the dust compartment. The holding elements form a contact surface for the dust bag and thus fulfill a support function. The design of the holding elements, in particular their arrangement and geometry, is decisive for optimal functioning of the vacuum cleaner. On the one hand, it is desirable to keep the contact surface small in order not to additionally close the outer surface of the dust bag and thereby cause a reduction in suction power. On the other hand, however, an optimal design of the holding elements requires that the contact surface is dimensioned in such a way that the dust bag is prevented from being pressed into the gaps created by the holding elements with a view to reducing the suction power. The position of the fan as well as that of the inflow opening determines the suitable design of the holding elements. In addition, in particular be arranged rippen-like holding elements in the direction of the suction air flow, so that they impede the latter as little as possible.

Als problematisch bei den bekannten Staubsaugern hat es sich herausgestellt, dass die Halteelemente speziell an eine bestimmte Motorenvariante sowie auf die von dem jeweiligen Hersteller bereit gestellten Staubbeutel angepasst sind. Wird jedoch beispielsweise ein Staubbeutel eines Fremdfabrikats eines von dem Hersteller des Staubsaugers abweichenden Herstellers verwendet, kann es mitunter dazu kommen, dass ein geringer Anteil der Schmutzpartikel an dem Saugbeutel vorbei in den Staubraum geleitet wird und hierdurch zu einer Verunreinigung desselbigen führt. Eine anschließende Reinigung des Staubraums hat sich aufgrund der vorragenden Halteelemente als müßig und zeitintensiv heraus gestellt, sodass in der Praxis oftmals etwaige Verunreinigungen des Staubraums hingenommen werden inklusive der sich dadurch ergebenden Hygienemängel. Neben diesem Nachteil wird ebenso das optische Erscheinungsbild des Staubraums durch die Halteelemente getrübt.It has turned out to be problematic with the known vacuum cleaners that the holding elements are specially adapted to a specific engine variant and to the dust bags provided by the respective manufacturer. However, if, for example, a dust bag from a different brand is used from a different manufacturer than the manufacturer of the vacuum cleaner, it can sometimes happen that a small proportion of the dirt particles are routed past the vacuum bag into the dust compartment and thus lead to contamination of the same. Subsequent cleaning of the dust chamber has turned out to be unnecessary and time-consuming due to the protruding holding elements, so that in practice any contamination of the dust chamber is often accepted, including the resulting hygiene deficiencies. In addition to this disadvantage, the visual appearance of the dust chamber is also marred by the holding elements.

Die EP 2 502 538 B1 sieht einen Staubbeutel vor, dessen Wandungen mittels einer Verbindungseinrichtung miteinander verbunden sind. Ferner ist vorgesehen, dass zumindest eine Wandung mit Oberflächenfalten versehen ist, welche sich bei Betrieb des Staubsaugers aufgrund des Saugluftstroms gegen eine Außenfläche des Staubbeutels aufstellen. Die Oberflächenfalten sollen sich zur Vergrößerung der Fläche des Staubbeutels eignen, um hierdurch eine höhere Staubaufnahmekapazität zu bewirken. Mittels der Verbindungseinrichtung soll der Abstand zwischen den Wandungen derart einstellbar sein, dass eine optimale Entfaltung der Oberflächenfalten ermöglicht wird.The EP 2 502 538 B1 provides a dust bag, the walls of which are connected to one another by means of a connecting device. Provision is also made for at least one wall to be provided with surface folds which, when the vacuum cleaner is in operation, form against an outer surface of the dust bag due to the flow of suction air. The surface folds should be suitable for increasing the surface area of the dust bag, in order to thereby bring about a higher dust holding capacity. The distance between the walls should be adjustable by means of the connecting device in such a way that an optimal unfolding of the surface folds is made possible.

Die FR 2 366 866 A1 offenbart einen Staubbeutel für einen Staubsauger mit einer Hülle, welche mit einer Vielzahl von Perforationen versehen ist, sodass ein Saugluftstrom, mittels dessen Schmutzpartikel durch die Einströmöffnung hindurch in den Sammelraum saugbar sind, durch die Hülle hindurch aus dem Sammelraum entweichen kann. Außen an der Hülle ist ein Abstandselement angeordnet, welches sich ausgehend von der äußeren Mantelfläche in eine von der Hülle abgewandte Richtung erstreckt, sodass die Hülle von der Wandung des Staubraums beabstandet wird.The FR 2 366 866 A1 discloses a dust bag for a vacuum cleaner with a cover that is provided with a number of perforations so that a suction air flow, by means of which dirt particles can be sucked through the inflow opening into the collection space, can escape through the cover and out of the collection space. A spacer element is arranged on the outside of the cover, which, starting from the outer lateral surface, extends in a direction away from the cover, so that the cover is spaced from the wall of the dust compartment.

Die EP 2 502 538 B1 offenbart einen Staubbeutel mit einer Hülle, welche auf ihrer Außenseite Falten ausbildet. Diese Falten sind dazu geeignet, den Staubbeutel von einer Wandung des Staubraumes abschnittsweise zu beabstanden.The EP 2 502 538 B1 discloses a dust bag having a sleeve which forms folds on the outside thereof. These folds are suitable for spacing the dust bag in sections from a wall of the dust chamber.

Der vorliegenden Anmeldung liegt mithin die Aufgabe zugrunde, die vorgenannten Nachteile zu überwinden und eine vereinfachte Reinigung des Staubraums des Staubsaugers zu ermöglichen.The present application is therefore based on the object of overcoming the aforementioned disadvantages and of enabling simplified cleaning of the dust compartment of the vacuum cleaner.

Die zugrunde liegende Aufgabe wird erfindungsgemäß mittels eines Staubbeutels mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen 2 bis 10.The underlying object is achieved according to the invention by means of a dust bag with the features of claim 1. Advantageous configurations result from subclaims 2 to 10.

Der erfindungsgemäße Staubbeutel ist durch mindestens ein an der Hülle angeordnetes Abstandselement gekennzeichnet, das sich ausgehend von einer äußeren Mantelfläche der Hülle in eine von der Hülle abgewandte Richtung erstreckt, sodass die Hülle im Zuge einer Installation des Staubbeutels in einem Staubraum eines Staubsaugers mittels Wirkung des Abstandselements zumindest bereichsweise von einer Wandung des Staubraums beabstandet haltbar ist.The dust bag according to the invention is characterized by at least one spacer element which is arranged on the cover and which, starting from an outer surface of the cover, extends in a direction away from the cover, so that the cover can be moved by means of the spacer element during installation of the dust bag in a dust chamber of a vacuum cleaner can be kept at a distance, at least in some areas, from a wall of the dust chamber.

Der erfindungsgemäße Staubbeutel hat viele Vorteile. Insbesondere verhindert das Abstandselement zumindest bereichsweise ein "Ansaugen" des Staubbeutels an die Wandung des Staubsaugers infolge der vorstehend beschriebenen Druckdifferenz zwischen dem Durchströmungsbereich und dem Sammelraum des Staubbeutels. Hierdurch kann vorzugsweise die gesamte Hülle des Staubbeutels zur Aufnahme der eingesaugten Schmutzpartikel genutzt werden. Das Abstandselement erfüllt somit die von den bekannten Halteelementen erzielte Abstandsfunktion. Vorteilhafter Weise ist das Abstandselement jedoch an dem Staubbeutel und mithin nicht an einer Wandung des Staubraums des Staubsaugers angeordnet. Das Erfordernis von an der Wandung des Staubraums angeordneten Halteelementen, wie sie aus dem Stand der Technik bekannt sind, entfällt somit zumindest in Bereichen des Staubbeutels, welche mit einem oder mehreren Abstandselementen versehen sind.The dust bag according to the invention has many advantages. In particular, the spacer element prevents the dust bag from being "sucked" onto the wall of the vacuum cleaner, at least in certain areas, as a result of the pressure difference described above between the flow area and the collection chamber of the dust bag. As a result, the entire cover of the dust bag can preferably be used to collect the dirt particles that have been sucked in. The spacer element thus fulfills the spacer function achieved by the known holding elements. However, the spacer element is advantageously arranged on the dust bag and therefore not on a wall of the dust chamber of the vacuum cleaner. The need for holding elements arranged on the wall of the dust chamber, as known from the prior art, is thus eliminated at least in areas of the dust bag which are provided with one or more spacer elements.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Staubbeutel mit einer Vielzahl von Abstandselementen versehen ist, die zumindest bereichsweise verteilt an der Hülle angeordnet sind. Vorzugsweise weist der Staubbeutel dabei derart viele Abstandselemente auf, dass die Ausbildung von bekannten Halteelementen in dem Staubraum des Staubsaugers vollständig entfallen kann. Insbesondere kann hierdurch eine vereinfachte Reinigung des Staubraums erzielt werden, da die Wandung des Staubraums insbesondere glatt und ohne Vorsprünge ausgeführt sein kann. Eine solche Wandung kann besonders einfach mittels eines Reinigungstuchs gereinigt werden. Ferner wird das optische Erscheinungsbild des Staubraums positiv beeinflusst.According to an advantageous embodiment of the invention, it is provided that the dust bag is provided with a multiplicity of spacer elements which are distributed at least in regions on the casing. The dust bag preferably has so many spacer elements that the formation of known holding elements in the dust chamber of the vacuum cleaner can be completely dispensed with. In this way, in particular, simplified cleaning of the dust chamber can be achieved, since the wall of the dust chamber can be designed in particular to be smooth and without projections. Such a wall can be cleaned particularly easily using a cleaning cloth. Furthermore, the visual appearance of the dust chamber is positively influenced.

Eine vorzugsweise Ausgestaltung sieht vor, dass zumindest ein Teil der Abstandselemente derart an der Hülle angeordnet sind, dass sie gemeinsam einen Streifen von Abstandselementen bilden. Die Anordnung der Abstandselemente in einem Streifen ist insbesondere im Hinblick auf eine Stützkraft derselben besonders vorteilhaft. Hierdurch kann der Staubbeutel besonders gut gegen ein unbeabsichtigtes Ansaugen infolge der vorherrschenden Druckdifferenzen gestützt werden. Beispielsweise ist vorstellbar, dass die Abstandelemente derart angeordnet sind, dass sie einer von den bekannten Halteelementen vorgegebenen Geometrie folgen. Denkbar ist somit, dass die Geometrie der Halteelemente gewissermaßen spiegelbildlich auf die Hülle des Staubbeutels übertragen ist. Vorteilhafter Weise kann somit die bereits auf das jeweilige Modell des Staubsaugers angepasste Geometrie einfach übernommen werden. Die erfindungsgemäßen Abstandselemente erfüllen hierdurch analog die Abstandsfunktion der Halteelemente, führen jedoch zu einer Verbesserung des Staubraums des Staubsaugers im Hinblick auf eine vereinfachte Reinigung sowie das optische Erscheinungsbild.A preferred embodiment provides that at least some of the spacer elements are arranged on the casing in such a way that together they form a strip of spacer elements. The arrangement of the spacer elements in a strip is particularly advantageous in particular with regard to a supporting force of the same. As a result, the dust bag can be supported particularly well against unintentional suction as a result of the prevailing pressure differences. For example, it is conceivable that the Spacer elements are arranged in such a way that they follow a geometry predetermined by the known holding elements. It is therefore conceivable that the geometry of the holding elements is, so to speak, transferred as a mirror image to the cover of the dust bag. Advantageously, the geometry already adapted to the respective model of the vacuum cleaner can thus be simply adopted. The spacer elements according to the invention thus fulfill the spacer function of the holding elements in an analogous manner, but lead to an improvement in the dust compartment of the vacuum cleaner with regard to simplified cleaning and the visual appearance.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist daher vorgesehen, dass Abstandselemente zumindest an einer Unterseite der Hülle, die bei einem bestimmungsgemäßen Einsetzen des Staubbeutels in den Staubraum des Staubsaugers einem Boden des Staubraums zugewandt ist, angeordnet sind. Ferner ist gemäß einem weiteren Merkmal der Erfindung vorgesehen, dass Abstandselemente zumindest an einem Seitenabschnitt der Hülle, die bei einem bestimmungsgemäßen Einsetzen des Staubbeutels in den Staubraum des Staubsaugers einer Seitenwandung des Staubraums zugewandt ist, angeordnet sind. Ebenso ist vorstellbar, dass der Staubbeutel vollständig, das heißt an allen seinen Seiten, mit Abstandselementen versehen ist. Hierdurch kann mithin gänzlich auf die Anordnung von Rippen oder ähnlichen Haltestrukturen an den Wandungen des Staubraums verzichtet werden.According to an advantageous embodiment of the invention, it is therefore provided that spacer elements are arranged at least on an underside of the cover, which faces a floor of the dust chamber when the dust bag is properly inserted into the dust chamber of the vacuum cleaner. Furthermore, according to a further feature of the invention, it is provided that spacer elements are arranged at least on a side section of the cover, which faces a side wall of the dust chamber when the dust bag is inserted as intended into the dust chamber of the vacuum cleaner. It is also conceivable that the dust bag is provided with spacer elements completely, ie on all its sides. As a result, the arrangement of ribs or similar holding structures on the walls of the dust chamber can be dispensed with entirely.

Ferner ist es besonders vorteilhaft, wenn das mindestens eine Abstandselement, vorzugsweise sämtliche Abstandselemente, derart steif ausgebildet ist, dass es dazu geeignet ist, die Hülle des Staubbeutels bei dessen Vorliegen in einem Leerzustand lokal zu stützen, sodass die Hülle in einem Wirkungsbereich des Abstandselements mittels des Abstandselements in einem Abstand zu einer Wandung des Staubraums haltbar ist. In der Erfindung ist das Abstandselement gleichwohl derart verformbar, dass bei Vorliegen des Staubbeutels in einem Füllzustand, in dem der Staubbeutel zu einem solchen Grad mit Schmutzpartikeln gefüllt ist, dass er gewechselt werden sollte, das Abstandselement "kollabiert", wodurch der Abstand der Hülle zu der Wandung des Staubraums in dem Wirkungsbereich des Abstandselements reduziert wird, vorzugsweise sich die Hülle des Staubbeutels an die zugeordnete Wandung des Staubraums des Staubsaugers anlegt.Furthermore, it is particularly advantageous if the at least one spacer element, preferably all spacer elements, is designed to be so stiff that it is suitable for locally supporting the cover of the dust bag when it is empty, so that the cover is in an effective range of the spacer element by means of of the spacer element can be kept at a distance from a wall of the dust chamber. In the invention, the spacer element is nevertheless deformable in such a way that when the dust bag is in a filling state in which the dust bag is filled with dirt particles to such a degree that it should be changed, the spacer element "collapses", thereby increasing the distance between the cover and the wall of the dust chamber is reduced in the effective range of the spacer element, preferably the cover of the dust bag rests against the associated wall of the dust chamber of the vacuum cleaner.

Der Staubbeutel liegt typischerweise vor der ersten Benutzung in seinem Leerzustand vor. In diesem Zustand ist der Staubbeutel frei von Schmutzpartikeln. Ebenso wird jedoch unter dem Leerzustand des Staubbeutels im Sinne der vorliegenden Anmeldung der Zustand verstanden, in dem der selbige weder leer, also frei von Schmutzpartikeln ist, noch derart gefüllt ist, dass eine weitere Aufnahme von Schmutzpartikeln zumindest stark verringert ist. Vielmehr handelt es sich bei dem Leerzustand ebenfalls um einen "Zwischenzustand", in welchem der Staubbeutel zur Aufnahme von Schmutzpartikeln vorgesehen ist. In dem Füllzustand des Staubbeutels ist der selbige hingegen derart mit Schmutzpartikeln gefüllt, dass die Saugleistung des Staubsaugers derart verringert ist, dass eine Aufnahme weiterer Schmutzpartikel zumindest stark vermindert ist, da der Saugluftstrom die Perforationen der Hülle lediglich erschwert durchdringen kann. Bei Erreichen des Füllzustands sollte der Staubbeutel gewechselt werden.The dust bag is typically in its empty state prior to first use. In this state, the dust bag is free of dirt particles. However, the empty state of the dust bag within the meaning of the present application is also understood to mean the state in which the same is neither empty, i.e. free of dirt particles, nor filled in such a way that further absorption of dirt particles is at least greatly reduced. Rather, the empty state is also an "intermediate state" in which the dust bag intended for picking up dirt particles. In the filling state of the dust bag, however, the same is filled with dirt particles in such a way that the suction power of the vacuum cleaner is reduced to such an extent that the intake of further dirt particles is at least greatly reduced, since the suction air flow can only penetrate the perforations of the cover with difficulty. When the filling level is reached, the dust bag should be changed.

In dem Leerzustand des Staubbeutels ermöglicht das Abstandselement eine Stützung des Staubbeutels gegen die Wandungen des Staubraums. Insbesondere ist das Abstandselement derart steif ausgebildet, dass es das Eigengewicht des Staubbeutels sowie die sich infolge des an der Hülle des Staubbeutels anfallenden Druckabfalls entstehende Druckkraft in die Wandung des Staubraums abtragen kann. Bei Betrieb des Staubsaugers bewirkt die Druckdifferenz zwischen dem Sammelraum und dem Durchströmungsraum eine Ansaugung des Staubbeutels gegen die Abstandselemente, welche mit zunehmenden Füllgrad des Staubbeutels ansteigt. Zudem steigt das Eigengewicht des Staubbeutels aufgrund der sich darin ansammelnden Schmutzpartikel. Bei Erreichen einer für das jeweilige Abstandselement gegebenen Grenzkraft knickt das Abstandselement beispielsweise in der Mitte elastisch ein. Ebenfalls vorstellbar ist auch, dass ein Ende des Abstandselements von einem Kontaktpunkt an der Wandung des Staubraums, welchen das Ende des Abstandselements in dem Leerzustand berührt, elastisch ausweicht. Das Abstandselement ist vorzugsweis derart dimensioniert, dass dieses Knicken bzw. Ausweichen eintritt, sobald der Staubbeutel seinen Füllzustand erreicht. In jedem Fall wird hierdurch der Abstand zwischen der Hülle und der zugeordneten Wandung des Staubraums reduziert, vorzugsweise auf null. Folge ist ein Anliegen der Hülle an die Wandung des Staubraums, welche zu einer Verringerung der Saugleistung führt, die dem Verwender beispielsweise mittels einer Staubbeutelwechselanzeige angezeigt wird.In the empty state of the dust bag, the spacer element enables the dust bag to be supported against the walls of the dust chamber. In particular, the spacer element is designed to be so rigid that it can carry the dead weight of the dust bag and the compressive force resulting from the pressure drop occurring on the cover of the dust bag into the wall of the dust chamber. When the vacuum cleaner is in operation, the pressure difference between the collection chamber and the through-flow chamber causes the dust bag to be sucked against the spacer elements, which increases as the dust bag is filled to an increasing extent. In addition, the dead weight of the dust bag increases due to the dirt particles that accumulate in it. When a limit force given for the respective spacer element is reached, the spacer element buckles elastically, for example in the middle. It is also conceivable that one end of the spacer element yields elastically from a contact point on the wall of the dust chamber, which the end of the spacer element touches in the empty state. The spacer element is preferably dimensioned in such a way that this buckling or yielding occurs as soon as the dust bag has reached its filling level. In any case, this reduces the distance between the cover and the associated wall of the dust chamber, preferably to zero. The result is that the cover comes into contact with the wall of the dust compartment, which leads to a reduction in the suction power, which is indicated to the user, for example, by means of a dust bag change indicator.

Bei bekannten, mit Halteelementen versehenen Staubsaugern erfolgt der Druckabfall kontinuierlich. Dies hat sich jedoch insbesondere im Hinblick auf Staubsauger mit einer niedrigen Leistungsaufnahme als problematisch herausgestellt. Aufgrund der ohnehin geringen Druckunterschiede zwischen dem Sammelraum und dem Durchströmungsberiech des Staubraums kann das Erreichen des maximalen Füllzustands des Staubbeutels in aller Regel nicht von der Staubbeutelwechselanzeige erfasst werden. Das Einknicken der erfindungsgemäßen Abstandselemente führt zu einem abrupten Abfall des Drucks. Dabei hat es sich herausgestellt, dass ein schlagartiger Druckabfall besonders gut von der Staubbeutelwechselanzeige eines mit einer niedrigen Leistungsaufnahme versehenen Staubsaugers erfasst werden kann. Vorteilhafter Weise kann somit auch dem Verwender von Staubsaugern mit niedrigen Leistungsaufnahmen der Füllstand des Staubbeutels von der Staubbeutelwechselanzeige angezeigt werden. Der Verwender des Staubsaugers wird damit darauf hingewiesen, dass ein Wechsel des Staubbeutels nötig ist.In known vacuum cleaners provided with holding elements, the pressure drop occurs continuously. However, this has turned out to be problematic, particularly with regard to vacuum cleaners with a low power consumption. Due to the already low pressure differences between the collection space and the flow area of the dust space, the dust bag change indicator generally cannot detect when the dust bag has reached its maximum filling level. The buckling of the spacer elements according to the invention leads to an abrupt drop in pressure. It has been found that a sudden drop in pressure can be detected particularly well by the dust bag change indicator of a vacuum cleaner with a low power consumption. Advantageously, the fill level of the dust bag can also be displayed by the dust bag change indicator to the user of vacuum cleaners with low power consumption. The user of the vacuum cleaner is thus informed that the dust bag needs to be changed.

Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, dass mindestens ein Abstandselement, vorzugsweise sämtliche Abstandselemente, noppenförmig oder borstenförmig ausgebildet sind, wobei vorzugsweise eine Länge eines jeweiligen Abstandselements dessen Durchmesser um mindestens das 10-fache, vorzugsweise mindestens das 30-fache, übersteigt. Es hat sich herausgestellt, dass die langgestreckte Ausgestaltung der Abstandselemente die Eigenschaft aufweist, bei Erreichen einer bestimmten äußeren Krafteinwirkung besonders vorteilhaft einzuknicken. Eine hierzu erforderliche Kraft hängt von dem Verhältnis zwischen der Länge und dem Durchmesser des Abstandselements sowie von dem Material des Abstandselements ab. Folglich ermöglicht die vorstehende Ausgestaltung des Abstandselements eine vorherige Festlegung eines Wechselintervalls des Staubbeutels.An advantageous embodiment of the invention provides that at least one spacer element, preferably all spacer elements, are nub-shaped or bristle-shaped, with a length of a respective spacer element preferably exceeding its diameter by at least 10 times, preferably at least 30 times. It has been found that the elongated configuration of the spacer elements has the property of buckling in a particularly advantageous manner when a certain external force is applied. A force required for this depends on the ratio between the length and the diameter of the spacer element and on the material of the spacer element. Consequently, the above design of the spacer element allows a change interval of the dust bag to be determined beforehand.

Vorzugsweise beträgt eine Länge des Abstandselements dabei mindestens 5 mm, vorzugsweise mindestens 10 mm, weiter vorzugsweise mindestens 15 mm. Es hat sich herausgestellt, dass eine derartige Länge des Abstandselements besonders gut geeignet ist, um den benötigten Abstand zwischen dem Staubraum und dem Staubbeutel zu erzielen und ferner zu einem geeigneten Wechselintervall führt.A length of the spacer element is preferably at least 5 mm, preferably at least 10 mm, more preferably at least 15 mm. It has been found that such a length of the spacer element is particularly well suited to achieving the required distance between the dust compartment and the dust bag and also leads to a suitable replacement interval.

Eine weitere Ausgestaltung der Erfindung sieht ferner vor, dass das Abstandselement von einem flexiblen Kunststoff, insbesondere Polypropylen oder einem thermoplastischen Elastomer, gebildet ist. Vorteilhafter Weise kann das Wechselintervall somit ebenfalls mittels einer geeigneten Auswahl des Materials des Abstandselements festgelegt werden. Ferner sind die vorstehenden Materialien besonders einfach an einem Staubbeutel anzubringen, so beispielsweise mittels des Hotmelt-Verfahrens. Hierbei wird ein Ende des Abstandselements bis zu einer Temperatur erhitzt wird, bei der eine Verformung des Materials ermöglicht wird. Dieses Ende wird auf der äußeren Mantelfläche der Hülle des Abstandselements platziert. Beim Erkalten des Materials erfolgt eine kraftschlüssige Verbindung mit der Hülle. Ferner ist es auch denkbar, das Abstandselement mittels Web- oder Stopfverfahren an der äußeren Mantelfläche des Staubbeutels anzuordnen. Bei dem Webverfahren wird das Abstandselement maschinell als Faden in die äußere Mantelfläche des Staubbeutels eingewebt. Bei dem Stopfverfahren wird das Abstandselement in die äußere Mantelfläche "gestopft".A further embodiment of the invention also provides that the spacer element is formed from a flexible plastic, in particular polypropylene or a thermoplastic elastomer. Advantageously, the change interval can thus also be determined by means of a suitable selection of the material of the spacer element. Furthermore, the above materials are particularly easy to attach to a dust bag, for example by means of the hot-melt process. In this case, one end of the spacer element is heated to a temperature at which deformation of the material is made possible. This end is placed on the outer surface of the shell of the spacer. When the material cools down, a non-positive connection is made with the shell. Furthermore, it is also conceivable to arrange the spacer element on the outer lateral surface of the dust bag by means of weaving or stuffing processes. In the weaving process, the spacer element is mechanically woven into the outer surface of the dust bag as a thread. In the stuffing process, the spacer element is "stuffed" into the outer lateral surface.

Eine besonders vorteilhafte Weiterentwicklung des erfindungsgemäßen Staubbeutels sieht vor, dass das Abstandselement luftundurchlässig ist. Vorteilhafter Weise kann somit verhindert werden, dass das Abstandselement ebenfalls an die Wandung des Staubraums gesogen wird und hierdurch nicht mehr zur Stützung des Staubbeutels beiträgt. Ebenso wird die Stabilität des Abstandselements verbessert.A particularly advantageous further development of the dust bag according to the invention provides that the spacer element is impermeable to air. Advantageously, it can thus be prevented that the spacer element is also sucked against the wall of the dust chamber and as a result no longer contributes to supporting the dust bag. The stability of the spacer element is also improved.

Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, dass das Abstandselement reversibel knickbar ist. Es ist denkbar, dass der Staubbeutel bei einer Befüllung zeitweise ungleichmäßig befüllt wird, wodurch der Staubbeutel lokal einer höheren Belastung ausgesetzt würde. Um zu verhindern, dass das Abstandselement in diesem Fall dauerhaft in einer abgeknickten Stellung verweilt - und damit die Saugleistung des Staubsaugers vermindert - ist es besonders vorteilhaft, wenn das Abstandselement reversibel knickbar ist, sodass das selbige mithin wieder in seine ursprüngliche Form zurückkehren kann, sobald die Schmutzpartikel gleichmäßig in dem Staubbeutel verteilt wurden.An advantageous embodiment of the invention provides that the spacer element can be bent reversibly. It is conceivable that the dust bag is filled unevenly at times during filling, as a result of which the dust bag would be exposed to a higher local load. In order to prevent the spacer element from staying permanently in a bent position in this case - and thus reducing the suction power of the vacuum cleaner - it is particularly advantageous if the spacer element can be bent reversibly, so that the same can therefore return to its original shape as soon as the dirt particles evenly distributed in the anther.

Zwei Ausführungsbeispiele der Erfindung sind in den Zeichnungen rein schematisch dargestellt und werden nachfolgend näher beschrieben. Es zeigt:

Figur 1
eine perspektivische Ansicht eines Staubsaugers
Figur 2
einen vertikalen Schnitt durch einen erfindungsgemäßen Staubbeutel,
Figur 3
wie Figur 2, mit abgeknickten Abstandselementen,
Figur 4
eine Frontansicht des Staubbeutels aus Figur 2,
Figur 5
eine perspektivische Ansicht eines Abstandselements aus Figur 2,
Figur 6
einen vertikalen Schnitt durch einen weiteren erfindungsgemäßen Staubbeutel und
Figur 7
eine perspektivische Ansicht eines weiteren Abstandselements aus Figur 6.
Two exemplary embodiments of the invention are shown purely schematically in the drawings and are described in more detail below. It shows:
figure 1
a perspective view of a vacuum cleaner
figure 2
a vertical section through an anther according to the invention,
figure 3
How figure 2 , with bent spacers,
figure 4
a front view of the anther figure 2 ,
figure 5
a perspective view of a spacer element figure 2 ,
figure 6
a vertical section through another dust bag according to the invention and
figure 7
a perspective view of another spacer element figure 6 .

Figur 1 zeigt einen Staubsauger 2. Der Staubsauger 2 weist ein Gehäuse 17 auf, welches einen Innenraum 18 begrenzt und mittels eines Deckels 16 zumindest im Wesentlichen dichtend gegen eine Umgebung verschließbar ist. In dem Innenraum 18 des Staubsaugers 2 sind ein Gebläse 15 sowie ein von Wandungen 9 räumlich eingefasster Staubraum 8 zur Aufnahme eines Staubbeutels 1 angeordnet. Mittels des Gebläses 15 wird ein Saugluftstrom erzeugt, welcher eine Mobilisierung sowie einen Abtransport der sich auf einer Bodenfläche 19 eines zu reinigenden Raumes 20 befindlichen Schmutzpartikel bewirkt. Hierzu umfasst der Staubsauger 2 eine Bodendüse 21, welche strömungsmäßig mittels eines Saugrohrs 22 und eines angrenzenden Saugschlauchs 23 mit dem Gebläse 15 verbunden ist. Die Schmutzpartikel werden hierbei von der Bodendüse 21 über das Saugrohr 22 und den Saugschlauch 23 in den Staubbeutel 1 geleitet und dort verwahrt. Das Erreichen einer maximalen Füllmenge des Staubbeutels 1 wird einem Verwender des Staubsaugers 2 von einer Staubbeutelwechselanzeige 24 angezeigt. figure 1 shows a vacuum cleaner 2. The vacuum cleaner 2 has a housing 17 , which delimits an interior space 18 and can be closed by means of a cover 16 at least essentially sealingly against the environment. In the interior 18 of the vacuum cleaner 2, a blower 15 and a spatially bordered by walls 9 dust chamber 8 for receiving a dust bag 1 are arranged. A suction air flow is generated by means of the blower 15 , which causes a mobilization and a removal of the dirt particles located on a floor surface 19 of a room 20 to be cleaned. For this purpose, the vacuum cleaner 2 comprises a floor nozzle 21 which is connected in terms of flow to the blower 15 by means of a suction pipe 22 and an adjacent suction hose 23 . The dirt particles are guided from the floor nozzle 21 via the suction tube 22 and the suction hose 23 into the dust bag 1 and stored there. A dust bag replacement display 24 indicates to a user of the vacuum cleaner 2 that the dust bag 1 has reached a maximum capacity.

Ein erstes Ausführungsbeispiel eines erfindungsgemäßen Staubbeutels 1 ist in den Figuren 2 bis 5 gezeigt. Der erfindungsgemäße Staubbeutel 1 umfasst einen von einer flexiblen Hülle 3 eingefassten Sammelraum 4 sowie eine in der Hülle 3 angeordnete Einströmöffnung 5. Die Einströmöffnung 5 ist mit einem Staubverschluss 25 versehen. Der Staubverschluss 25 ist aus Pappe gebildet und weist zwei, sich ausgehend von der Einströmöffnung 5 erstreckende Laschen auf. Der Staubbeutel 1 wird bei Inbetriebnahme des Staubsaugers 2 in den Staubraum 8 eingesetzt. Hierbei lassen sich die Laschen des Staubverschlusses 25 in eine nicht gesondert in den Figuren dargestellte Halterung im Staubraum 8 einschieben, um den Staubbeutel 1 in dem Staubraum 8 zu fixieren und gleichzeitig sicherzustellen, dass der mit den Schmutzpartikeln behaftete Saugluftstrom lediglich den Staubbeutel 1 durchströmt. Dabei füllt der Staubbeutel 1 den Staubraum 8 nicht vollständig aus, sodass ein Durchströmungsbereich 26 vorliegt, welcher sich ausgehend von einer äußeren Mantelfläche 7 des Staubbeutels 1 zu den Wandungen 9 des Staubraums 8 hin erstreckt. In einem Betriebszustand des Staubsaugers 2 bewirkt der durch das Gebläse 15 erzeugte Saugluftstrom eine Ansaugung der Schmutzpartikel ausgehend von der Bodendüse 21 in den Sammelraum 4 des Staubbeutels 1. Die Hülle 3 des Staubbeutels 1 ist aus einem Vliesstoff gebildet und weist eine Vielzahl von Perforationen auf. Hierbei weisen die Perforationen der Hülle 3 einen derart geringen Durchmesser auf, dass ein Durchtritt zumindest eines überwiegenden Anteils des Schmutzpartikel durch die Perforationen verhindert ist, sodass die Schmutzpartikel in dem Staubbeutel 1 gehalten und somit aus dem Saugluftstrom abgeschieden werden. Der Saugluftstrom kann hingegen durch die Perforationen der Hülle 3 hindurch aus dem Sammelraum 4 in den Durchströmungsbereich 26 des Staubraums 8 entweichen. Bei ansteigendem Füllgrad des Staubbeutels 1 werden die Perforationen der Hülle 3 zunehmend von den Schmutzpartikeln zugesetzt, sodass der Staubbeutel 1 einen Druckabfall in dem Staubraum 8 bewirkt. Als Folge ergibt sich eine Differenz zwischen dem Druck innerhalb des Sammelraums 4 des Staubbeutels 1 und dem Durchströmungsbereich 26 des Staubraums 8 sowie eine Druckkraft infolge eines erhöhten Eigengewichts des Staubbeutels 1, wodurch die Hülle 3 des Staubbeutels 1 mit zunehmendem Füllgrad stärker an die Wandung 9 des Staubraums 8 gesogen wird.A first embodiment of a dust bag 1 according to the invention is in the Figures 2 to 5 shown. The dust bag 1 according to the invention comprises a collection space 4 surrounded by a flexible cover 3 and an inflow opening 5 arranged in the cover 3 . The inflow opening 5 is provided with a dust seal 25 . The dust seal 25 is made of cardboard and has two tabs extending from the inflow opening 5 . The dust bag 1 is inserted into the dust chamber 8 when the vacuum cleaner 2 is put into operation. Here, the tabs of the dust seal 25 can be pushed into a holder in the dust chamber 8 (not shown separately in the figures) in order to fix the dust bag 1 in the dust chamber 8 and at the same time ensure that the suction air flow containing the dirt particles only flows through the dust bag 1 . The dust bag 1 does not fill the dust chamber 8 completely, so that there is a flow area 26 which extends from an outer lateral surface 7 of the dust bag 1 to the walls 9 of the dust chamber 8 . When the vacuum cleaner 2 is in operation, the suction air flow generated by the blower 15 causes the dirt particles to be sucked in from the floor nozzle 21 into the collection space 4 of the dust bag 1. The cover 3 of the dust bag 1 is made of a nonwoven fabric and has a large number of perforations. The perforations of the cover 3 have such a small diameter that at least a major part of the dirt particles is prevented from passing through the perforations, so that the dirt particles are held in the dust bag 1 and thus separated from the suction air flow. The suction air flow, on the other hand, can escape through the perforations of the cover 3 from the collection space 4 into the through-flow area 26 of the dust space 8 . As the degree of filling of the dust bag 1 increases, the perforations of the cover 3 are increasingly blocked by the dirt particles, so that the dust bag 1 causes a pressure drop in the dust chamber 8 . As a result, there is a difference between the pressure within the Collection chamber 4 of the dust bag 1 and the flow area 26 of the dust chamber 8 as well as a compressive force due to an increased dead weight of the dust bag 1, whereby the cover 3 of the dust bag 1 is sucked more strongly against the wall 9 of the dust chamber 8 as the degree of filling increases.

Die Hülle 3 ist bereichsweise mit einer Vielzahl von Abstandselementen 6 versehen, welche sich ausgehend von der äußeren Mantelfläche 7 der Hülle 3 in eine von der Hülle 3 abgewandte Richtung erstrecken. Die Abstandselemente 6 sind, wie in Figur 5 gezeigt, borstenförmig ausgeformt und weisen Länge 12 auf, die einen Durchmesser 13 um mindestens das 10-fache übersteigt. Dabei sind die Abstandselemente 6, wie in der Figur 4 gezeigt, gleichmäßig an einer Unterseite 11 der Hülle 3 angeordnet, die bei einem bestimmungsmäßigen Einsetzen des Staubbeutels 1 in den Staubraum 8 des Staubsaugers 2 einem Boden 10 des Staubraums 8 zugewandt sind. Die Abstandselemente 6 sind aus einem flexiblen Kunststoff ausgebildet und luftundurchlässig. In einem, wie in der Figur 2 gezeigten, Leerzustand des Staubbeutels 1 stützen die Abstandselemente 6 die Hülle 3 des Staubbeutels 1 in einem Abstand 14 gegen die Wandungen 9 des Staubraums 8 ab, um zu verhindern, dass der Staubbeutel 1 angesaugt wird und hierdurch eine Verringerung der Saugleistung bewirkt.The shell 3 is provided in some areas with a multiplicity of spacer elements 6 which, starting from the outer lateral surface 7 of the shell 3 , extend in a direction away from the shell 3 . The spacer elements 6 are, as in figure 5 shown, shaped like bristles and have a length 12 that exceeds a diameter 13 by at least 10 times. The spacers 6, as in the figure 4 shown, evenly arranged on an underside 11 of the shell 3, which are facing a bottom 10 of the dust chamber 8 in an intended use of the dust bag 1 in the dust chamber 8 of the vacuum cleaner 2 . The spacer elements 6 are made of a flexible plastic and are impermeable to air. In one, like in the figure 2 When the dust bag 1 is empty, as shown, the spacer elements 6 support the cover 3 of the dust bag 1 at a distance 14 against the walls 9 of the dust chamber 8 in order to prevent the dust bag 1 from being sucked in and thereby reducing the suction power.

In dem Füllzustand hingegen, welcher in Figur 3 gezeigt ist, bewirkt eine Druckdifferenz zwischen dem Sammelraum 4 des Staubbeutels 1 und dem Durchströmungsraum 26 sowie das erhöhte Eigengewicht des Staubbeutels 1 eine Krafteinwirkung auf die Abstandselemente 6, welche zur Folge hat, dass die Abstandselemente 6 einknicken. Hierdurch erfolgt eine Verringerung des Abstands 14 zwischen der Hülle 3 des Staubbeutels 1 und der Wandung 9 des Staubraums 8, welche mithin dazu führt, dass der Druck schlagartig abfällt. Dieser Druckabfall wird dem Verwender des Staubsaugers 2 über die Staubbeutelwechselanzeige 24 angezeigt. Der Verwender wird damit darauf hingewiesen, dass ein Wechsel des Staubbeutels 1 nötig ist.In the filling state, however, which in figure 3 is shown, a pressure difference between the collection space 4 of the dust bag 1 and the flow space 26 and the increased weight of the dust bag 1 causes a force to act on the spacer elements 6, which results in the spacer elements 6 buckling. This results in a reduction in the distance 14 between the cover 3 of the dust bag 1 and the wall 9 of the dust chamber 8, which consequently leads to the pressure dropping suddenly. This drop in pressure is displayed to the user of the vacuum cleaner 2 via the dust bag change indicator 24 . The user is thus informed that the dust bag 1 needs to be changed.

Figuren 6 und 7 zeigen eine zweite Ausgestaltung eines erfindungsgemäßen Staubbeutels 1. Dabei ist der Staubbeutels 1 grundsätzlich analog zu dem zuvor beschriebenen Staubbeutel 1 aufgebaut und unterscheidet sich lediglich durch die Ausgestaltung der Abstandselemente 6. Im Gegensatz zu dem ersten Ausführungsbeispiel sind die Abstandselemente 6 in Form von Schlaufen gebildet. Bei der Herstellung des Staubbeutels 1 wird ein Kunststoff extrudiert und im plastischen Zustand punktuell auf der äußeren Mantelfläche 7 des Staubbeutels 1 abgesetzt. Die hierdurch entstandenen Schlaufen sind einerseits, wie in Figur 7 gezeigt, punktförmig an der Hülle des Staubbeutels fixiert. Andererseits stehen die Schlaufen nach der Installation des Staubbeutels 1, wie in Figur 6 gezeigt, punktuell mit dem Boden 10 des Staubraums 8 in Kontakt. Auch hier erfüllen die Abstandselemente 6 eine Stützfunktion, um die Hülle 3 vor einem Ansaugen zu bewahren. Bei Einwirken einer bestimmten, durch die Druckdifferenzen sowie einer infolge des zunehmenden Eigengewichts hervorgerufenen Kraft auf die Schlaufen 6 weichen diese jedoch derart von der Wandung 9 des Staubraums 8 ab, dass eine Ansaugung der Hülle 3 des Staubbeutels 1 an die Wandungen 9 des Staubraums 8 ermöglicht wird. Auch hier wird dem Verwender das Erreichen des Füllzustands des Staubbeutels 1 von der Staubbeutelwechselanzeige 24 signalisiert. figures 6 and 7 show a second embodiment of a dust bag 1 according to the invention. The dust bag 1 is basically constructed analogously to the dust bag 1 described above and differs only in the design of the spacer elements 6. In contrast to the first exemplary embodiment, the spacer elements 6 are in the form of loops. In the production of the dust bag 1, a plastic is extruded and deposited in the plastic state at certain points on the outer lateral surface 7 of the dust bag 1 . The resulting loops are on the one hand, as in figure 7 shown, punctiform fixed to the envelope of the anther. On the other hand, after installing the dust bag 1, the loops stand as in figure 6 shown, selectively with the floor 10 of the dust chamber 8 in contact. Here, too, the spacer elements 6 fulfill a supporting function in order to prevent the casing 3 from being sucked in. When exposed to a certain, by the pressure differences and a force on the loops 6 caused by the increasing dead weight, however, deviate from the wall 9 of the dust chamber 8 in such a way that the cover 3 of the dust bag 1 can be sucked onto the walls 9 of the dust chamber 8 . Here, too, the dust bag change indicator 24 signals to the user that the dust bag 1 has been filled.

BezugszeichenlisteReference List

11
Staubbeutelanthers
22
StaubsaugerVacuum cleaner
33
HülleCovering
44
Sammelraumcollection room
55
Einströmöffnunginflow opening
66
Abstandselementspacer element
77
Mantelflächelateral surface
88th
Staubraumdust room
99
Wandungwall
1010
BodenFloor
1111
Unterseitebottom
1212
Längelength
1313
Durchmesserdiameter
1414
AbstandDistance
1515
Gebläsefan
1616
DeckelLid
1717
GehäuseHousing
1818
Innenrauminner space
1919
Bodenflächefloor space
2020
RaumSpace
2121
Bodendüsefloor nozzle
2222
Saugrohrintake manifold
2323
Saugschlauchsuction hose
2424
StaubbeutelwechselanzeigeDust bag change indicator
2525
Staubverschlussdust lock
2626
Durchströmungsbereichflow area

Claims (10)

  1. Dust bag (1) for a vacuum cleaner (2), comprising
    - a collection chamber (4) enclosed by a flexible cover (3), and
    - an inflow opening (5) arranged in the cover (3),
    the cover (3) being provided with a plurality of perforations, such that a suction air flow, by means of which dirt particles can be sucked through the inflow opening (5) into the collection chamber (4), can escape through the cover (3) from the collection chamber (4),
    the perforations having such a small diameter that at least one predominant portion of the dirt particles are prevented from passing through the perforations,
    characterised by
    at least one spacer element (6) which is arranged on the cover (3) and, starting from an outer skirt surface (7) of the cover (3), extends in a direction facing away from the cover (3), such that, when the dust bag (1) is installed in a dust chamber (8) of the vacuum cleaner (2), the cover can be held at least in regions spaced apart from a wall (9) of the dust chamber (8) by means of the action of the spacer element (6), the spacer element (6) being designed so as to be deformable in such a way that it is suitable for locally supporting the cover (3) of the dust bag (1) when it is in an empty state, such that the cover (3) can be held, by means of the spacer element (6), at a distance (14) from a contact surface in an action region of the spacer element (6) and, when the dust bag (1) is in a full state, it being possible for the spacer element (6) to be deformable in such a way that the distance (14) of the cover (3) in the action region of the spacer element (6) is reduced such that the cover of the dust bag rests against the associated wall of the dust chamber of the vacuum cleaner.
  2. Dust bag (1) according to claim 1, characterised by a plurality of spacer elements (6) which are arranged at least in regions distributed on the cover (3).
  3. Dust bag (1) according to claim 2, characterised in that at least some of the spacer elements (6) are arranged on the cover (3) in such a way that, together, they form a strip of spacer elements (6).
  4. Dust bag (1) according to either claim 2 or claim 3, characterised in that spacer elements (6) are arranged at least on a lower face (11) of the cover (3) which, when the dust bag (1) is properly inserted into the dust chamber (8) of the vacuum cleaner (2), faces a base (10) of the dust chamber (8).
  5. Dust bag (1) according to any of claims 2 to 4, characterised in that spacer elements (6) are arranged at least on one side portion of the cover (3) which, when the dust bag (1) is properly inserted into the dust chamber (8) of the vacuum cleaner (2), faces a side wall of the dust chamber (8).
  6. Dust bag (1) according to any of claims 1 to 5, characterised in that at least one spacer element (6), preferably all spacer elements (6), are knob-shaped or bristle-shaped, preferably a length (12) of a relevant spacer element (6) exceeding its diameter (13) by at least 10 times, preferably at least 30 times.
  7. Dust bag (1) according to any of claims 1 to 6, characterised in that a length (12) of the spacer element (6) is at least 5 mm, preferably at least 10 mm, more preferably at least 15 mm.
  8. Dust bag (1) according to any of claims 1 to 7, characterised in that the spacer element (6) is formed by a flexible plastics material, in particular polypropylene or a thermoplastic elastomer.
  9. Dust bag (1) according to any of claims 1 to 8, characterised in that the spacer element (6) is impermeable to air.
  10. Dust bag (1) according to any of claims 1 to 9, characterised in that the spacer element (6) is deformable, in particular bendable.
EP20202011.1A 2019-10-22 2020-10-15 Dust bag for a vacuum cleaner Active EP3811837B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019128442.2A DE102019128442A1 (en) 2019-10-22 2019-10-22 Vacuum cleaners for cleaning floor surfaces and dust bags for such

Publications (2)

Publication Number Publication Date
EP3811837A1 EP3811837A1 (en) 2021-04-28
EP3811837B1 true EP3811837B1 (en) 2023-06-07

Family

ID=72943867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20202011.1A Active EP3811837B1 (en) 2019-10-22 2020-10-15 Dust bag for a vacuum cleaner

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Country Link
EP (1) EP3811837B1 (en)
DE (1) DE102019128442A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202024001703U1 (en) 2024-09-06 2024-09-23 Christine Brüning Hollow body cleaning device with ultrasonic control and UV-C emitting glass fiber bristles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1396326A (en) * 1972-05-11 1975-06-04 Goblin Ltd B V C Filtration apparatus
SE410399B (en) * 1976-10-08 1979-10-15 Lectrostatic Ab NETWORK FILTER INTENDED TO WORK WITH HIGH PULSE PRESSURE
EP2502538B1 (en) 2011-03-22 2015-09-23 Eurofilters Holding N.V. Vacuum cleaner filter bag with filter bag wall connection device

Also Published As

Publication number Publication date
DE102019128442A1 (en) 2021-04-22
EP3811837A1 (en) 2021-04-28

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