EP1683461A1 - Sac filtre à poussière - Google Patents

Sac filtre à poussière Download PDF

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Publication number
EP1683461A1
EP1683461A1 EP05025606A EP05025606A EP1683461A1 EP 1683461 A1 EP1683461 A1 EP 1683461A1 EP 05025606 A EP05025606 A EP 05025606A EP 05025606 A EP05025606 A EP 05025606A EP 1683461 A1 EP1683461 A1 EP 1683461A1
Authority
EP
European Patent Office
Prior art keywords
bag
dust filter
filter bag
front wall
wall
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.)
Withdrawn
Application number
EP05025606A
Other languages
German (de)
English (en)
Inventor
Uwe Schmierer
Herbert Krehan
Andrej Korobov
Jürgen Rammig
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.)
Branofilter GmbH
Original Assignee
Branofilter GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Branofilter GmbH filed Critical Branofilter GmbH
Publication of EP1683461A1 publication Critical patent/EP1683461A1/fr
Withdrawn legal-status Critical Current

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Classifications

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

Definitions

  • the invention relates to a dust filter bag for vacuum cleaners, comprising a wall made of weldable flexible filter material, which comprises a front wall containing an inlet opening, a rear wall substantially parallel to the front wall and two opposite side walls each in the form of a laterally folded between the front wall and the rear wall, formed by two pleat legs gusset is formed, wherein the dust filter bag has an at least substantially rectangular shape and is closed at its two longitudinal ends by welds.
  • the pleat legs extend in the bag longitudinal direction together with the front wall and the rear wall and are detected by the weld closing the bag. This results in four layers being welded together at each weld in the region of the two lateral folds and two layers in the region between the two lateral folds.
  • the dust filter bag In operation, when the dust filter bag is inserted in a vacuum cleaner and this is turned on, the sucked air flow passes through the inlet opening into the bag interior and then flows through the bag wall, where the in sucked airflow contained dust or other dirt particles are filtered out. In this operation, the dust filter bag inflates due to the pressure increase resulting in it. This internal pressure loads the bag wall and in particular the welds. Practice has shown that the places where the two-ply weld seams pass into the four-ply weld seam areas, not always permanently withstand the loads occurring, so that the bag can tear at these locations.
  • the bag When the bag inflates, the front wall and the rear wall bulge out. Accordingly, the bag volume increases, so that a correspondingly large amount of dust can be absorbed.
  • the puffing is done by unfolding the gussets.
  • the gussets can unfold only in their central area, since they are welded at their longitudinal ends with the front wall and the rear wall. The achievable increase in volume is therefore limited.
  • the present invention seeks to provide a dust filter bag of the type mentioned, which has a stable structure and in the inflated state, a large internal volume.
  • This object is achieved in that at the two longitudinal ends of the dust filter bag, the front wall and the rear wall in bag longitudinal direction over the gussets are preferred and that at each longitudinal end of the dust filter bag, the preferred ends of the front wall and the rear wall by a transverse first weld region and at each gusset, the ends of the two pleat legs over a second weld area, the only on each facing lateral edge of the bag is connected to the first weld region, are interconnected, such that the two side folds ausstülpbar from its folded between the front wall and the rear wall layer, so that form completely widened side folds the pleat legs lateral widening of the front wall and the rear wall ,
  • the ends of the gussets are not connected to the front wall and the rear wall, so that they not only unfold but can evert over their entire length away. This results in a larger bag volume than ever since.
  • the dust filter bag in completely everted side gussets having the shape of a flat bag having a top wall and a bottom wall corresponding to the front wall and the rear wall with both sides of an attached pleat leg and its circumference are welded together along.
  • a dust filter bag can be relatively easily manufactured by first making a flat bag with a length corresponding to the length of the dust filter bag and a width of the dust filter bag plus twice the pleat leg width corresponding width, wherein the flat bag is formed by a top wall and a bottom wall, the their Welded circumferentially together, after which the flat bag to form the gussets is laterally invaginated until the dust bag.
  • FIGS. 1 to 3 The details shown only in FIGS. 1 to 3 are also available in the exemplary embodiments according to FIGS. 5 and 6, taking into account the different gusset length and differently designed gusset ends.
  • the resulting from the drawing dust filter bag 1; 1a; 1b have a substantially rectangular shape when new ( Figure 1). They are designed for vacuum cleaners like them usually used in the home or even commercially.
  • Each dust filter bag 1; 1a; 1b has a wall made of weldable, flexible filter material with a front wall 2; 2a; 2b and a front wall substantially parallel to the rear wall 3. Furthermore, the respective dust filter bag 1; 1a; 1b two mutually opposite side walls 4, 5 each in the form of a laterally folded between the front wall 2 and the rear wall 3, formed by two fold legs 6, 7 and 8, 9 gussets 10, 11, so that it is a so-called gusseted bag , In Figures 5 and 6, only the pleat legs 6a, 8a and 6b, 8b are visible, and indeed - as in Figure 4 - in the everted state.
  • the filter material forming the said bag walls may be single or multi-layered.
  • the front wall 2; 2a; 2b includes an inlet port 13; 13a; 13b. It is outside of the front wall 2; 2a; 2b at the inlet opening 13; 13a; 13b a rigid fitting plate-like shape attached, which is perforated in alignment with the inlet opening.
  • This connector was omitted in the drawing.
  • the connecting piece is used to fix the dust filter bag 1; 1a; 1b in the vacuum cleaner. In the state inserted into the vacuum cleaner, a connection piece arranged on the vacuum cleaner projects through the connection piece into the inlet opening 13; 13a; 13b.
  • the bag walls forming the bag wall are connected to each other by welds to be described later (the welding is performed by ultrasonic welding), so that one except the inlet port 13; 13a; 13b outwardly closed bag interior 14 results.
  • the dust filter bag 1; 1a; 1b expands during operation from its initial shape shown in Figure 1.
  • the bag walls have a certain air permeability, but keep the entrained by the air flow dirt particles or other particles, so that exits clean air on the outside of the bag wall. If the bag is full, it is removed from the vacuum cleaner and thrown away or emptied and replaced.
  • the two longitudinal ends 16, 17 of the dust filter bag 1; 1a; 1b are the front wall 2; 2a; 2b and the rear wall 3 in the pouch longitudinal direction 12 (this corresponds to the longitudinal direction of the side folds 10, 11) over the side folds 10, 11, wherein at each longitudinal end 16, 17, the forward ends of the front wall and the rear wall by a transverse first weld region 18; 18a; 18b and 19, respectively; 19a; 19b are interconnected.
  • the dust filter bag 1 inflates.
  • the gussets 10, 11 fold apart, so to speak, i. whose pleat legs 6, 7 and 8, 9 are removed from each other.
  • the gussets finally turn outward, with the pleat legs approach each other again, but in the opposite direction as before, so that you finally get the resulting from Figure 4 shape.
  • FIG. 4 is drawn on the same scale as FIG. This evagination of the gussets 10, 11 takes place over the entire gusset length.
  • each gusset 10, 11 the two are between the front wall 2; 2a; 2b and the rear wall 3 arranged inner longitudinal edge regions (with "inside” reference is made to the starting position according to Figure 1) of the two pleat legs by a longitudinal direction in the bag longitudinal direction 12 longitudinal weld 28, 29; 28a, 29a; 28b, 29b (these longitudinal welds extend in the everted state outside) connected to each other.
  • the pleat legs 6, 7 and 8, 9 in one piece via a bending line 30 connected to the respective front wall 2 or rear wall 3. It is understood that the pleat legs contrary to the illustrated embodiment may also be connected to the front wall and the rear wall differently than in one piece.
  • the dust filter bag is in the shape of a flat bag ( Figures 4, 5 and 6) with a top wall 31; 31a; 31b and a congruent sub-wall.
  • the top wall 31; 31a; 31b corresponds to the front wall 2; 2a; 2b with on both sides each an attached pleat legs 6, 8; 6a, 8a; 6b, 8b.
  • the lower wall of the flat bag corresponds to the rear wall 3 with on both sides in each case an attached fold leg 7 or 9.
  • the top wall 31; 31a; 31b and the congruent sub-wall are welded together along their circumference.
  • This circumferential weld forms the first two weld seam regions 18, 19 in each filter bag; 18a, 19a; 18b, 19b, the second weld seam areas 20 to 23; 20a to 23a; 20b to 23b, the longitudinal welds 28, 29; 28a, 29a; 28b, 29b and optionally, in the embodiments in the case of Figures 5 and 6, still intermediate weld regions 32a, 33a, 34a, 35a; 32b, 33b, 34b, 35b, which will be explained.
  • the manufacture of the dust filter bag can proceed so that one first produces the flat bag according to Figure 4 or Figure 5 or Figure 6, by the top wall 31; 31a; 31b and the corresponding sub-wall superimposed and welded together along the circumference.
  • the length of this flat bag corresponds to the length of the finished dust filter bag.
  • the width of the flat bag corresponds to the width of the finished dust filter bag plus twice the fold leg width. Then, the side folds resulting lateral widening 26, 27; 26a, 27a; 26b, 27b laterally between the front wall 2; 2a; 2b and the rear wall 3 invaginated until the dust filter bag.
  • the lateral everting occurring during operation corresponds to the lateral invagination occurring in the bag production so to speak in the reverse direction.
  • the various embodiments differ with regard to the length of the gussets and the formation of gusseted longitudinal ends.
  • the second weld seam areas 20 to 23, which close the side folds 10, 11 in the transverse direction and in the case of the finished dust filter bag, run approximately parallel to the first weld seam areas 18, 19.
  • the second weld seam areas 20 to 23 thereby pass at the lateral bag edges 24, 25 directly into the first weld seam areas 18, 19 via.
  • the flat bag of Figure 4 corresponding state a generally rectangular shape of the flat bag, wherein at each longitudinal end 16, 17, the second weld seams 20, 22 and 21, 23 linearly connect to the first weld region 18 and 19, so that at each longitudinal end 16, 17 there is a transverse weld seam 36 or 37 passing through the width dimension of the flat bag.
  • the front wall. 2 and the rear wall 3 can be the side gussets 10, 11 einülpen, since it is indeed a flexible filter material.
  • the two existing at the extending in the bag longitudinal direction 12 rectangular sides of the flat bag welds corresponding to the longitudinal welds 28, 29, where the folds legs 6, 7 and 8, 9 are connected to each other in the finished dust filter bag 1.
  • the side folds closing end second weld regions 20a to 23a; 20b to 23b are thus in the bag longitudinal direction 12 at a distance from the first weld seam regions 18a, 19a; 18b, 19b arranged, which facilitates the production of the invagination and the operation everting the gussets.
  • the intermediate weld regions 32a to 35a; 32b to 35b connect the second weld regions 20a to 23a; 20b to 23b with the first weld regions 18a, 19a; 18b, 19b and extend along the respectively facing lateral edge of the finished dust filter bag (see the lateral bag edges 24, 25 in Figure 1).
  • the second weld seam regions 20a to 23a run parallel to the first weld seam regions 18a, 19b.
  • Figure 6 are the Side fold ends and thus also the second weld seam areas 20b to 23b chamfered, so that you get trapezoidal gussets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP05025606A 2005-01-20 2005-11-24 Sac filtre à poussière Withdrawn EP1683461A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520000918 DE202005000918U1 (de) 2005-01-20 2005-01-20 Staubfilterbeutel

Publications (1)

Publication Number Publication Date
EP1683461A1 true EP1683461A1 (fr) 2006-07-26

Family

ID=34400264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05025606A Withdrawn EP1683461A1 (fr) 2005-01-20 2005-11-24 Sac filtre à poussière

Country Status (2)

Country Link
EP (1) EP1683461A1 (fr)
DE (1) DE202005000918U1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005016309U1 (de) 2005-10-18 2005-12-15 Wolf Gmbh Staubsaugerbeutel
DE202005021619U1 (de) * 2005-12-15 2008-12-24 Eurofilters N.V. Filterbeutel
DE102007005612B4 (de) * 2006-01-31 2009-10-15 Aichner Filter Gmbh Filterbeutel für einen Staubsauger
ATE556635T1 (de) * 2010-02-19 2012-05-15 Eurofilters Holding Nv Staubsaugerfilterbeutel mit seitenfalte
EP2662010B1 (fr) 2010-03-19 2014-08-06 Eurofilters Holding N.V. Sac d'aspirateur
DK2502538T3 (en) * 2011-03-22 2015-12-07 Eurofilters Holding Nv Vacuum cleaner filter bag with filterposevægforbindelsesindretning
ES2625427T3 (es) 2014-04-08 2017-07-19 Eurofilters N.V. Bolsa de filtro para aspiradores de polvo para un aspirador de polvo vertical
EP2944247B1 (fr) * 2014-05-12 2016-09-21 Eurofilters N.V. Sac filtrant d'aspirateur doté d'un cordon de soudure très résistant, son procédé de fabrication, outil et installation de soudage par ultrasons destinée à la fabrication d'un cordon de soudure très résistant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477007A1 (fr) * 1990-09-21 1992-03-25 S.C. Johnson & Son, Inc. Sacs à poussière à haute efficacité pour aspirateur
WO1995016383A1 (fr) * 1993-12-16 1995-06-22 Hitachi, Ltd. Sac en papier collecteur de poussiere pour aspirateur
DE20101466U1 (de) * 2001-01-27 2001-04-19 Wolf Gmbh In einen Staubsauger einsetzbare Filtereinrichtung
DE10126425A1 (de) * 2000-08-03 2002-02-14 Branofilter Gmbh Filterbeutel
JP2002078653A (ja) * 2000-06-21 2002-03-19 Oshitani Sangyo Kk 掃除機用の紙パック

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477007A1 (fr) * 1990-09-21 1992-03-25 S.C. Johnson & Son, Inc. Sacs à poussière à haute efficacité pour aspirateur
WO1995016383A1 (fr) * 1993-12-16 1995-06-22 Hitachi, Ltd. Sac en papier collecteur de poussiere pour aspirateur
JP2002078653A (ja) * 2000-06-21 2002-03-19 Oshitani Sangyo Kk 掃除機用の紙パック
DE10126425A1 (de) * 2000-08-03 2002-02-14 Branofilter Gmbh Filterbeutel
DE20101466U1 (de) * 2001-01-27 2001-04-19 Wolf Gmbh In einen Staubsauger einsetzbare Filtereinrichtung
DE10203460A1 (de) * 2001-01-27 2002-08-29 Wolf Gmbh In einen Staubsauger einsetzbare Filtereinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 07 3 July 2002 (2002-07-03) *

Also Published As

Publication number Publication date
DE202005000918U1 (de) 2005-03-31

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