EP2345358B1 - Sac d'aspirateur et procédé de fabrication d'un sac d'aspirateur - Google Patents

Sac d'aspirateur et procédé de fabrication d'un sac d'aspirateur Download PDF

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Publication number
EP2345358B1
EP2345358B1 EP10192362.1A EP10192362A EP2345358B1 EP 2345358 B1 EP2345358 B1 EP 2345358B1 EP 10192362 A EP10192362 A EP 10192362A EP 2345358 B1 EP2345358 B1 EP 2345358B1
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
cleaner bag
filter material
bag
bag according
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.)
Not-in-force
Application number
EP10192362.1A
Other languages
German (de)
English (en)
Other versions
EP2345358A1 (fr
Inventor
Dr. Wolfgang Czado
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.)
Wolf PVG GmbH and Co KG
Original Assignee
Wolf PVG GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wolf PVG GmbH and Co KG filed Critical Wolf PVG GmbH and Co KG
Publication of EP2345358A1 publication Critical patent/EP2345358A1/fr
Application granted granted Critical
Publication of EP2345358B1 publication Critical patent/EP2345358B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • 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

Definitions

  • the present invention relates to a vacuum cleaner bag with a bag formed of air-permeable filter material, in which at least one element is arranged, which is fixed to at least two connection points on the filter material, and a method for producing a vacuum cleaner bag.
  • a vacuum cleaner bag according to the preamble of claim 1 is ZB from DE-A-202008005050 known.
  • the EP 1 915 939 discloses a filter bag in which a dividing wall is provided for dividing the interior into two chambers, which is fixed on one side to a side seam and on the opposite side in a region adjacent to a holding plate on the filter material. This allows a portion of the dust to accumulate in the first chamber before the pre-cleaned air stream flows into the second chamber.
  • a predetermined breaking point can be provided in the dividing wall, which allows a separation of the dividing wall at a predetermined filling. It is problematic that the tensile force can vary to separate the partition and also the breaking point changes the flow conditions in the interior of the bag.
  • the element arranged in the bag is fixed via at least one connection point, which is releasable at a predetermined tensile force on the element.
  • the element arranged in the bag is fixed via at least one connection point, which is releasable at a predetermined tensile force on the element.
  • the tensile forces on the element increase, so that after exceeding a predetermined tensile force, the at least one connection point is releasable, so that the bag can continue to develop, which reduces the tendency to clog and reduces the drop in suction power.
  • a flow resistance in the vacuum cleaner bag can be reduced and / or the internal volume can be increased, so that it has been found in experiments that the suction power is increased.
  • the internal volume of the bag or a chamber in the bag or a flow resistance through the element is reduced by releasing the at least one connection point.
  • the vacuum cleaner bag can be held at the beginning of the filling in a predetermined position by the element, which is then changed upon release of the at least one connection point.
  • several connection points can be successively successively solved to successively increase the inner volume of the bag.
  • the element is designed as a deflection device, by means of which an air flow entering through an inflow opening can be deflected.
  • a tensile force can be applied to the element by the incoming air flow, which provides for increasing the filling for a release of the connection point.
  • the element may additionally be formed as a partition, which divides the interior of the bag into two chambers.
  • the first chamber can be connected to the second chamber via at least one overflow, so that by loosening at least one connection point, the overflow is increased and thereby the flow resistance is reduced in the vacuum cleaner bag.
  • the dividing wall can be fixed to at least one side seam of the vacuum cleaner bag and on the opposite side, the dividing wall can be connected adjacent to an inflow opening via the connection point with the filter material. This ensures that the partition hanging and spaced from an upper and a lower layer of filter material is arranged in operation, so that the filter performance is particularly effective.
  • the partition can be used as a dust storage, which stores a portion of the dust without the layers of filter material are clogged.
  • the tensile force for releasing the connection point is less than 20 N, preferably less than 15 N, in particular less than 10 N.
  • the force for releasing the connection point can be set in a range between 5 N and 10 N, for example. so that with increasing filling of the vacuum cleaner bag a secure release of the joint takes place.
  • the pulling force for releasing the connection point can be chosen so that a release occurs when the bag is filled by about 50%, for example in a range between 35% to 65%, in particular 40% to 60%. As a result, the effect of increasing the internal volume or decreasing a flow resistance at a time when the suction power of the vacuum cleaner bag is remarkably decreased.
  • the element inside the vacuum cleaner bag may be formed by a single or multi-ply web.
  • the joint is preferably formed as a seam, in particular by gluing or welding.
  • the size of the seam can be used to adjust a release at a predetermined tensile force. It is of course also possible to adjust the strength of the connection by adjusting the welding parameters in ultrasonic welding, such as welding surface, welding energy, welding time. Even when gluing the peel force can be adjusted by using the adhesive, geometry of the adhesive seam or other parameters.
  • the seam may be formed by one or more points, stripes, triangles or other geometric surfaces.
  • the seam is formed so that the solidified portions are aligned in the direction of the force and the seam surface increases, so that the force for detaching the seam increases. As a result, a successive detachment at the connection point can be achieved, in which firstly easily detachable seams and then the more difficultly detachable seams with a larger surface are detached.
  • a release agent between the element and the filter material is provided at the connection point.
  • the release agent consists in particular of a film, such as polyethylene film, a nonwoven, foam, powder, PUR, rubber, paper or crepe.
  • the selection of the material of the release agent can be matched to the filter material and the material of the element. If the filter material on the side facing the element or the element comprises a nonwoven made of a polypropylene, a polyethylene film or a polyester-based nonwoven may be used as the release agent, for example, in order to limit the holding forces at the seam.
  • connection point can also be formed by a hook-and-loop fastener.
  • a layer of filter material is fed to a connection station and then an element is arranged on the filter material.
  • the element is fixed to the filter material by means of at least one detachable connection point before the bag of filter material with the element in the interior of the bag is completed.
  • the element is fixed by an at least one releasable connection point on an inner side of the filter material, so that the above-mentioned advantages are obtained.
  • a sheet-shaped release agent is preferably disposed between the element and the filter material during manufacture of the releasable joint.
  • a vacuum cleaner bag 1 comprises a lower layer of filter material 2 and an upper layer of filter material 3, which consist of a multilayer nonwoven fabric and are welded together at the edges.
  • the vacuum cleaner bag 1 is formed as a flat bag and has inside an element 4, which divides the interior of the vacuum cleaner bag into a first chamber 30 and a second chamber 31.
  • the upper layer 3 and the lower layer 2 are welded together, while at the opposite end side, the lower layer 2, an edge portion of the element 4 and the upper layer 3 are welded together.
  • the element 4 is welded over a part of the entire length with the lower layer 2 and the upper layer 3, wherein the layers 2 and 3 are formed longer than the element 4th
  • connection point 10 is formed in the embodiment shown as a strip which extends over less than 50%, preferably less than 40%, of the width of the vacuum cleaner bag 1 extends.
  • connection point 10 is detachably formed, wherein at a predetermined tensile force at the connection point 10, a complete or partial detachment of the element 4 from the upper layer 3 takes place at the connection point 10.
  • the detachment at the connection point 10 is preferably carried out at a filling of the bag of more than 20%, in particular more than 40%, so that the vacuum cleaner bag 1 can change its geometry after detachment at the connection point 10.
  • the two overflow openings 9 are enlarged adjacent to the connection point 10 or even together connected, so that the flow resistance is reduced by the subdivision of the vacuum cleaner bag through the partition wall 4.
  • the upper layer 3 of filter material may continue to expand, so that the inner volume of the vacuum cleaner bag 2 is increased.
  • the connection point 10 may be formed by a weld or an adhesive seam, wherein the surface of the seam is preferably ⁇ 1 cm 2 , in particular ⁇ 0.5 cm 2 , for example 0.01 to 0.3 cm 2 .
  • the seam instead of being formed by a continuous strip or a continuous surface, the seam can be formed by a multiplicity of spaced seams, which also enable a successive detachment of the element 4 from the layer 3.
  • the detachment of the element 4 at the connection point 10 can also take place in stages, for example, a first detachment when filling the vacuum cleaner bag 1 by 40% and a complete detachment at the connection point 10 at a filling at about 70%.
  • the tensile force for detachment at the connection point 10 may be, for example, 3 to 10 N, in particular 5 to 9 N, but is preferably below 20 N.
  • the element 4 may consist of a single or multi-ply web, but other materials such as plastic, metal, paper, paperboard, foam or a combination of these materials may be used.
  • the shape of the element 4 may be formed instead of a partition as a thin strip which is narrower than the vacuum cleaner bag 1 and is connected only at the junction 10 and the side seam 6 with the upper layer 3, while on the longitudinal sides and 8 the element 4 is arranged at a distance.
  • the element 4 instead of being a flat element, the element 4 may also be arranged in a loop shape, balloon shape or with other geometries in the vacuum cleaner bag 1. It is possible that instead of a single connection point 10, a plurality of connection points 10 are used for fixing the element 4, which are provided on the upper layer 3 or lower layer 2. It is possible that peeling occurs at any of the junctions 10 so that the exact location of the peeling is random.
  • FIGS. 2A and 2B shows a further embodiment of a vacuum cleaner bag 1 ', in which the same components are provided with the same reference numerals.
  • a modified connection point 10 ' is formed on the upper layer 3 of filter material adjacent to the inflow opening 11.
  • a separating element 23 is arranged between the junction 10 'shown schematically and the upper layer 3 of filter material .
  • the separating element 23 ensures that a seam for fixing the element 4 to the upper layer 3 has a predetermined geometry which ensures release at a predetermined tensile force on the element 4.
  • the release agent may be sheet-shaped and consist of a film, such as polyethylene film, a non-woven, foam, powder, PUR, rubber, paper or crepe. Also, powdery release agents can be used to limit the strength at the junction 10 '.
  • FIG. 3A a joint 10 is shown which is formed as a seam 13 by welding or gluing.
  • the seam 13 is formed by a plurality of circular seams 14.
  • the seams 14 are arranged so that more seams 14 are provided with increasing distance from the inflow opening 11, so that a successive detachment of the element 4 takes place when first the seams 14 adjacent to the inflow opening 11 are released.
  • FIG. 3B a modified seam 15 is shown in which seams 16 are formed in the form of triangles. The triangles preferably extend pointedly in the direction of the force.
  • FIG. 3C a seam 17 is shown in which a plurality of strips are provided as seams 18.
  • FIG. 3D a seam 19 with a rhombic seam 20 is shown while in FIG. 3E a seam 21 with an elliptical seam 22 is shown.
  • the shape and number of seams 14, 16, 18, 20 and 22 can be varied as desired in order to achieve a desired detachment of the element 4 from the filter material 2 or 3.
  • the individual seams are preferably produced by ultrasound with sonotrode and anvil. Due to its weld surface gradient, the seam can start to rupture more easily and with increasing weld area or number of weld points at the edge of the tear-off edge. It is additionally possible to adjust the strength of the connection by adjusting the welding parameters in ultrasonic welding, such as welding surface, welding energy, welding time. Even when gluing the peel force can be adjusted by using the adhesive, geometry of the adhesive seam or other parameters.
  • connection points 10 and 10 ' are made by welding or gluing.
  • gluing hot glue, a double-sided adhesive tape or other adhesives can be used.
  • connection point 10 is formed as Velcro or other releasable connection element.
  • connection point 10 or 10 also depends on the filter material 2 and 3 used, which may be formed as a nonwoven, but also paper, mixtures of nonwoven and paper, foil, mesh, nets, foam or other materials may be formed .
  • a corresponding element 4 can also be used in a block bottom bag or a differently shaped vacuum cleaner bag.
  • FIG. 4 is a diagram for the volume flow drop of a vacuum cleaner bag 1 according to the invention shown with increasing filling.
  • the experiment involved working in a Miele S 749, 2300 W vacuum cleaner with a motor protection filter, but without an exhaust filter, in which a Swirl M50 vacuum cleaner bag is inserted (flat bag).
  • the device was operated at maximum power and the suction volume flow was measured.
  • dust was sucked in in steps of 50 g of DMT type 8 and the suction volume flow was measured until a total of 400 g of dust had been sucked in.
  • the results are labeled "bag” in the diagram.
  • the vacuum cleaner bag consists of 5-ply fleece material. From the inside to the outside, the filter layers consist of spunbond, fleece, spunbond, meltblown and spunbond as the outer layer.
  • a vacuum cleaner bag 1 was additionally provided with a partition wall element 4, as shown in the Figures 1A and 1B is shown.
  • the partition element was made as a rectangular nonwoven, a 60 g / m 2 polyester carded web and had a width x length of 200 x 275 mm.
  • the partition element was welded on three sides (reference numerals 6, 7 and 8) to the layers 2 and 3 of filter material. Further, the partition wall member adjacent to the inflow port 11 on the upper filter sheet 2 was connected by a seam by ultrasonic welding.
  • This vacuum bag was accordingly filled with DMT house dust type 8 in 50 g increments and the results are shown in the graph. As can be seen, the volume flow drop is significantly low with increasing filling of the vacuum cleaner bag.
  • a vacuum cleaner bag was then provided with a dividing wall 4, but instead of a solid seam by means of ultrasonic welding, a connection point 10 according to the invention was provided, which was dimensioned in its geometry such that detachment occurs at a tensile force of approximately 5 to 8 N, which is the case with a dust filling of approx. 100 to 300 g.
  • This vacuum cleaner bag is in FIG. 4 as "bag + self-releasing chamber in the bag".
  • the values between the bag with the fixedly fixed partition wall 4 and the partition fixed to the connection point 10 are initially the same. From a filling of 150 g, however, the separation process begins, so that with increasing filling a significantly lower volume flow drop can be seen, which is achieved by the effect of detachment of the partition wall.

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

Claims (17)

  1. Sac d'aspirateur (1, 1') comprenant un sac réalisé en un matériau filtrant (2, 3) perméable à l'air dans lequel est monté au moins un élément (4) qui est fixé au matériau filtrant (2, 3) au niveau d'au moins deux jointures (6, 10, 10'),
    caractérisé en ce qu'
    au moins une jointure (10, 10') peut être détachée en présence d'une force de traction prédéfinie exercée sur l'élément (4).
  2. Sac d'aspirateur conforme à la revendication 1,
    caractérisé en ce que
    suite au détachement de la jointure (10, 10') le volume interne du sac ou une chambre (30) située dans ce sac peut être agrandi(e).
  3. Sac d'aspirateur conforme à la revendication 1 ou 2,
    caractérisé en ce que
    l'élément (4) est réalisé sous la forme d'un dispositif déflecteur au moyen duquel le flux d'air entrant par une ouverture d'entrée (11) peut être dévié.
  4. Sac d'aspirateur conforme à la revendication 1 à 3,
    caractérisé en ce que
    l'élément (4) est réalisé sous la forme d'une paroi de séparation qui subdivise le volume interne du sac en deux chambres (30, 31).
  5. Sac d'aspirateur conforme à la revendication 4,
    caractérisé en ce que
    la paroi de séparation est fixée à au moins un joint latéral (6), et, du côté opposé, la paroi de séparation est reliée au matériau filtrant (2, 3) par l'intermédiaire de la jointure (10, 10'), au voisinage d'une ouverture d'entrée (11).
  6. Sac d'aspirateur conforme à l'une des revendications 1 à 5,
    caractérisé en ce que
    la force de traction permettant de détacher la jointure (10, 10') est inférieure à 20 N, de préférence inférieure à 15 N et en particulier inférieure à 10 N.
  7. Sac d'aspirateur conforme à l'une des revendications 1 à 6,
    caractérisé en ce que
    la force de traction permettant de détacher la jointure (10, 10') est choisie de sorte qu'un détachement se produise en présence d'un remplissage du sac d'au moins 50%.
  8. Sac d'aspirateur conforme à l'une des revendications 1 à 7,
    caractérisé en ce que
    l'élément (4) est formé par un voile de fibres en une ou plusieurs couches.
  9. Sac d'aspirateur conforme à l'une des revendications 1 à 7,
    caractérisé en ce que
    l'élément (4) est formé par du papier, du carton, un film, du bois, du métal, du matériau synthétique, un voile de fibres ou une combinaison de ces matériaux.
  10. Sac d'aspirateur conforme à l'une des revendications 1 à 9,
    caractérisé en ce que
    la jointure (10, 10') est réalisée sous la forme d'un joint (13, 15, 17, 19, 21) par collage ou soudage de préférence aux ultrasons.
  11. Sac d'aspirateur conforme à la revendication 10,
    caractérisé en ce que
    le joint (13, 15, 17, 19, 21) est formé par un ou plusieurs point(s), bande(s), triangle(s), ou autre(s) surface(s) géométrique(s).
  12. Sac d'aspirateur conforme à la revendication 10 ou 11,
    caractérisé en ce que
    le joint (13, 15, 17, 19, 21) est réalisé de sorte que les zones rigidifiées soient orientées dans la direction de l'action de la force, et que la surface du joint augmente de sorte que la force permettant de détacher le joint (13, 15, 17, 19, 21) augmente.
  13. Sac d'aspirateur conforme à l'une des revendications 1 à 11,
    caractérisé en ce qu'
    au niveau de la jointure (10') un moyen de séparation (23) est positionné entre l'élément (4) et le matériau filtrant (2, 3).
  14. Sac d'aspirateur conforme à la revendication 13,
    caractérisé en ce que
    le moyen de séparation est réalisé en forme de feuille.
  15. Sac d'aspirateur conforme à l'une des revendications 1 à 9,
    caractérisé en ce que
    la jointure (10, 10') est formée par une fermeture auto-agrippante.
  16. Procédé d'obtention d'un sac d'aspirateur (1, 1') en particulier conforme à l'une des revendications précédentes, comprenant les étapes consistant à :
    - fournir une couche de matériau filtrant (2, 3) à un poste de liaison,
    - positionner un élément (4) sur le matériau filtrant (2, 3) et fixer cet élément (4) sur le matériau filtrant (2, 3), et au moyen d'au moins une jointure (10, 10') pouvant être détachée en présence d'une force de traction prédéfinie exercée sur l'élément (4),
    - former un sac à partir du matériau filtrant (2, 3) avec l'élément (4) dans le volume interne de ce sac.
  17. Procédé conforme à la revendication 16,
    caractérisé en ce que
    lors de la fabrication de la jointure détachable (10, 10') un moyen de séparation (23) est positionné entre le matériau filtrant (2, 3) et l'élément (4), et le moyen de séparation est en particulier constitué d'une feuille telle qu'une feuille en polyéthylène un voile de fibres, de la mousse, de la poudre, du PUR du caoutchouc, du papier ou du crêpe.
EP10192362.1A 2010-01-19 2010-11-24 Sac d'aspirateur et procédé de fabrication d'un sac d'aspirateur Not-in-force EP2345358B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010000129 DE102010000129B4 (de) 2010-01-19 2010-01-19 Staubsaugerbeutel und Verfahren zur Herstellung eines Staubsaugerbeutels

Publications (2)

Publication Number Publication Date
EP2345358A1 EP2345358A1 (fr) 2011-07-20
EP2345358B1 true EP2345358B1 (fr) 2015-07-01

Family

ID=42338881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10192362.1A Not-in-force EP2345358B1 (fr) 2010-01-19 2010-11-24 Sac d'aspirateur et procédé de fabrication d'un sac d'aspirateur

Country Status (2)

Country Link
EP (1) EP2345358B1 (fr)
DE (1) DE102010000129B4 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015226056B4 (de) * 2015-12-18 2019-04-25 BSH Hausgeräte GmbH Auffaltender Filterbeutel für einen Staubsauger
DE102017108230A1 (de) * 2017-04-18 2018-10-18 Wolf Pvg Gmbh & Co. Kg Staubsauger-Filterbeutel
DE102018204784A1 (de) * 2018-03-28 2019-10-02 BSH Hausgeräte GmbH Einleger für einen Beutelfilter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006016303U1 (de) * 2006-10-23 2006-12-21 Wolf Gmbh & Co. Kg Filterbeutel
EP2098151B1 (fr) * 2008-03-07 2013-10-23 Eurofilters Holding N.V. Sac d'aspirateur
DE202008007717U1 (de) * 2008-06-10 2008-08-07 Wolf Pvg Gmbh & Co. Kg Filterbeutel
DE202008016300U1 (de) * 2008-12-10 2009-02-26 Wolf Pvg Gmbh & Co. Kg Staubsaugerbeutel

Also Published As

Publication number Publication date
DE102010000129B4 (de) 2011-06-16
DE102010000129A1 (de) 2010-08-19
EP2345358A1 (fr) 2011-07-20

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