EP3135170A1 - Sac de filtre a poussiere - Google Patents

Sac de filtre a poussiere Download PDF

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Publication number
EP3135170A1
EP3135170A1 EP16183166.4A EP16183166A EP3135170A1 EP 3135170 A1 EP3135170 A1 EP 3135170A1 EP 16183166 A EP16183166 A EP 16183166A EP 3135170 A1 EP3135170 A1 EP 3135170A1
Authority
EP
European Patent Office
Prior art keywords
layer
dust
dust collector
collector insert
cutout
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16183166.4A
Other languages
German (de)
English (en)
Other versions
EP3135170B1 (fr
Inventor
Stefan Kreimeyer
Marco Schmidt
Michael Agethen
Guido Umlauf
Jürgen Rammig
Frank Aldenhoven
Gerhard Kern
Thomas Ziegler
Uwe Schmierer
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
Miele und Cie KG
Original Assignee
Branofilter GmbH
Miele und Cie 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 Branofilter GmbH, Miele und Cie KG filed Critical Branofilter GmbH
Publication of EP3135170A1 publication Critical patent/EP3135170A1/fr
Application granted granted Critical
Publication of EP3135170B1 publication Critical patent/EP3135170B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

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

Definitions

  • the invention relates to a dust filter bag for use in a vacuum cleaner, with a one or more layers bag wall forming the outside of the dust bag, which is at least partially formed of air-permeable filter material, with a bag interior, which is enclosed by the bag wall, wherein one or more in the bag interior air-permeable dust collector inserts are arranged.
  • the invention thus presents the problem of providing an improved dust filter bag, which causes the lowest possible manufacturing expense and allows the longest possible service life while continuously high suction rates. According to the invention, this problem is solved by a device having the features of patent claim 1 and by a method according to patent claim 13. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.
  • a dust collector insert is formed by at least two superimposed layers, wherein a first layer of the dust collector insert has at least one cutout, wherein a second layer of the dust collector insert is formed by at least a portion of this at least one section.
  • a section of a first layer of the dust collector insert is made by removing filter material from the first layer.
  • the removal of filter material takes place from the first layer of the dust collector insert over the entire depth of the first layer.
  • the first and second layers of the dust collector insert have an identical depth as far as possible.
  • the first and second The position of the dust collector insert lie in such a way one above the other that there is almost no space between the first and second position of the dust collector insert. In an alternative embodiment, however, it is also conceivable to arrange the first and second dust collector insert one above the other in such a way that a space is formed between the two layers.
  • a multi-layer dust collector insert whose second layer is formed by a section of a first layer, has an enlarged filter surface in relation to a single-layer dust collector insert.
  • the enlargement of the filter surface is achieved without introducing additional filter material into the filter bag.
  • the additional free surface increases both the particle storage capacity and the particle retention of the dust collector insert.
  • the second layer of the dust collector insert is smaller than or equal to the section of the first layer of the dust collector insert.
  • the second layer of the dust collector insert thus has approximately the same dimensions as the section from the first layer of the dust collector insert.
  • the second layer of the dust collector insert on plastic deformation. In other words, the second position of the dust collector inserts relative to the section of the first layer changes the geometric shape.
  • a second layer which is smaller or equal to the section of the first layer of the dust collector insert allows the use of the section of the first layer as the second layer of the dust collector insert.
  • the second layer of the dust collector insert is formed by filter material which is taken from the first layer of the dust collector insert.
  • the second layer of the dust collector insert partially covers a section of the first layer of the dust collector insert.
  • the second layer of the dust collector insert is arranged on the first layer of the dust collector insert such that the at least one section of the first layer is not completely covered by the second layer.
  • the second layer may be arranged on the first layer of the dust collector insert that the second layer relative to the at least one section of the first position is shifted and / or twisted. In an alternative embodiment, however, it is also conceivable to arrange the second layer of the dust collector insert on the first layer of the dust collector insert such that the at least one section of the first dust collector insert is almost completely covered by the second layer.
  • the partial covering of the at least one cutout in the first layer of the dust collector insert by the second layer ensures the most pronounced possible flow through the second layer of the dust collector insert.
  • the additionally created filter surface of the dust collector insert is flowed through in such a way that all layers can absorb and bind particles particularly effectively.
  • first layer and the second layer of the dust collector insert are connected to one another at at least one point.
  • the two layers of Staubflindereinlagen are selectively connected to each other.
  • the connection between the first and second position of the dust collector insert is designed so that both layers are firmly aligned with each other, without preventing a certain mobility of both layers or portions of both layers. It is preferred that the first layer and the second layer of the dust collector insert are joined together by welding, gluing, sewing or needling.
  • connection between the first and second position of the dust collector insert prevents detachment of both layers from each other, without completely precluding a certain mobility of both layers or their partial areas.
  • the first and second position of the dust collector insert can align during operation to the fluid flow, which flows through the bag interior of the dust bag. This ensures that both layers of the dust collector in the bag interior are aligned with each other so that they achieve the maximum performance in terms of particle absorption and particle binding.
  • the dust collector insert has no connection with the bag wall.
  • the dust collector insert is arranged inside the bag such that the dust collector insert at no point has a permanent connection to the bag wall or a component of the dust filter bag connected to the bag wall.
  • a permanent connection is a permanent connection that can not be solved without destruction. Due to the lack of connection between the dust collector insert and the bag wall, the air-permeable dust catcher insert has increased freedom of movement in the interior of the dust filter bag. This allows the dust collector insert to move freely depending on the space available in the interior of the dust filter bag during operation and relocate. Due to this free mobility can be a particularly favorable turbulence and flow around the inlet opening in the Bag-inside entering particle-laden airflow can be achieved. On the one hand this increases the degree of particle deposition and on the other hand it makes possible the displaceability of the dust collector insert, which makes more space available for the deposited particles.
  • the at least one section of the first layer of the dust collector insert has a circular shape.
  • a round blank is understood to mean a cylinder which has a relatively small height in relation to its diameter. An advantage of the blanks is their comparatively low manufacturing effort.
  • the at least one section of the first layer of the dust collector insert has a circumferential waveform.
  • the waveform of the at least one section is so pronounced that this results in at least two wave peaks.
  • the wave crests are aligned in the direction of the center of the first layer of the dust collector insert.
  • the waveform of the at least one section is so pronounced that the resulting wave crests have an elongated shape.
  • the waveform of the at least one section is so pronounced that the wave crests steeply rise and fall.
  • a section of the first layer of the dust collector insert in waveform leads to a significant increase in the filter surface and is also produced with reasonable production engineering effort.
  • the at least one section of the first layer of the dust collector insert has a star shape.
  • the star shape of the detail from the first position of the dust collector insert is so pronounced that the form of the star shape prongs of the cut have an elongated expression.
  • the star shape of the cutout has, in a preferred embodiment, at least three prongs.
  • the dust collector insert at least partially consists of a carded polyester fiber fleece.
  • the dust collector insert has an air permeability of between 3,000 and 7,000 l / m 2 s and, in a particularly preferred embodiment, an air permeability of between 1,000 and 3,000 l / m 2 s.
  • the dust collector insert has a grammage of between 30 and 400 g / m 2 and, in a particularly preferred embodiment, a grammage of between 100 and 200 g / m 2 .
  • the dust collector insert has according to DIN EN ISO 9073-2, WSP 120.6 in a preferred embodiment, a thickness between 0.5 and 50 mm and in a particularly preferred embodiment has a thickness between 5 and 15 mm.
  • the dust collector insert consists of a fiber fleece, which in a preferred embodiment has a fiber diameter between 10 and 500 microns and in a particularly preferred embodiment has a fiber diameter between 30 and 100 microns.
  • the dust collector insert consists of a nonwoven fabric whose fibers have a first material with a first melting point and a second material with a second melting point.
  • the core of the fibers consists of a first material, which has a higher melting point than the second material which forms the sheath of the fibers.
  • the dust collector insert forms a filter surface, wherein the filter surface of the dust collector insert in a preferred embodiment between 20 and 80 percent of the filter surface of the dust filter bag and in a particularly preferred embodiment between 40 and 60 percent of the filter surface of the dust filter bag. That is, the dust collector insert forms with the first and second layer a total of a filter surface, which constitutes in a preferred embodiment between 20 and 80 percent of the filter surface of the dust filter bag and in a particularly preferred embodiment between 40 and 60 percent of the filter surface of the dust filter bag.
  • the dust collector insert is so pronounced that it expands the available filter surface of the dust bag to a significant extent. As a result, the particle absorption and the particle binding of the dust bag is improved.
  • At least one second layer is fixed to the first layer such that the first layer faces an upper wall region and the at least one second layer faces a lower wall region, wherein the upper wall region contains an inlet opening of the bag wall.
  • the at least one section of a first layer of the dust collector insert is made by removing filter material from this first layer.
  • the removal of filter material takes place from the first layer of the dust collector insert over the entire depth of the first layer.
  • the first and second layers of the dust collector insert have an identical depth as far as possible.
  • the connection of the first layer of the dust collector insert with the at least one cutout takes place in a preferred embodiment via a point connection.
  • the cutout in the step of arranging the cutout from a first layer of the dust collector insert on a first layer of the dust collector insert, can be rotated or displaced relative to the first layer of the dust collector insert.
  • the removed section is reduced. In an alternative embodiment of the method, after removing a section from a first layer of the dust collector insert, the removed section is deformed. In a further alternative embodiment of the method, after removing a section from a first layer of the dust collector insert, the removed section is reduced in size and deformed.
  • dust filter bag 1 is a flat bag. It is shown in a Vor ists briefly, ie, before the dust filter bag 1 is inserted into the dust chamber of a vacuum cleaner not shown in the drawings and the vacuum cleaner is turned on.
  • the dust filter bag 1 has a single or multi-layer bag wall 2, which has an upper wall portion 3 and a lower wall portion 4. Furthermore, the bag wall 2 is at least partially formed of air-permeable filter material.
  • the upper wall region 3 has an inlet opening 5 in its center.
  • a holding plate 6 is arranged around the inlet opening 5.
  • the holding plate 6 also has an inlet opening 7, which is axially aligned with the inlet opening 5 in the upper wall portion 3 and coincides with this.
  • the upper wall portion 3 is connected to the lower wall portion 4 at the edge via a circumferential weld 8.
  • a dust collector insert 10 is loosely arranged in the interior 9 between the upper and the lower wall portion.
  • This Staubflindereinlage is in the in the FIGS. 1 to 10 illustrated embodiments partially executed differently.
  • the dust collector insert according to the invention can be used not only in the flat bags shown, but also in any other bag structure.
  • FIG. 1 shows the top view of a first layer 12 of a dust collector insert 10 with a cutout 16 in waveform.
  • the first layer 12 has a square base.
  • the longitudinal sides 20 of the square base of the dust collector insert 10 are made longer than the transverse sides 22 centered centered in the base of the dust collector insert 10, a wavy cutout 16 is arranged.
  • the cutout 16 is completely enclosed by the longitudinal 20 and transverse sides 22 of the base of the dust collector insert 10.
  • the cutout 16 is mirror-symmetrical both in relation to the transverse axis and the longitudinal axis of the base surface of the dust collector insert 10.
  • the cutout 16 extends approximately over the entire longitudinal 20 and the transverse side 22 of the base of the dust collector insert 10th
  • FIG. 2 shows the top view of a second layer 14 of a dust collector insert 10 in waveform.
  • the second layer 14 of the dust collector insert 10 is mirror-symmetrical with respect to its longitudinal and transverse axis.
  • the waveform of the second layer 14 of the dust collector insert 10 is so pronounced that this wave peaks 24 forms.
  • the wave crests 24 are aligned outward in the direction of the longitudinal sides 20 of the dust collector insert 10.
  • Two opposite wave peaks 24 each form a pair of wave crests, the individual peaks 24 of a wave pair pointing in opposite directions.
  • the individual peaks 24 each have a steep rise and fall.
  • FIG. 3 shows the top view of a dust collector insert 10 in waveform.
  • the first layer 12 of the dust collector insert 10 is in this case arranged above the second layer 14 of the dust collector insert 10.
  • a wave-shaped cutout 16 is arranged in the first layer 12 of the dust collector insert 10.
  • the second layer 14 of the dust collector insert 10 has the same shape as the cutout 16 from the first layer 12 of the dust collector insert 10.
  • the second layer 14 of the dust collector insert 10 is centered below the first layer 12 of the dust collector insert 10.
  • the second layer 14 of the dust collector insert 10 is rotated by 90 degrees.
  • the first and second layers 12, 14 of the dust collector insert 10 are punctiformly connected to each other at four points 18.
  • the cutout 16 in the first layer 12 of the dust collector insert 10 is covered only in partial areas by the second layer 14 of the dust collector insert 10.
  • FIG. 4 shows the top view of a dust collector insert 10 with additional slots 26.
  • the first layer 12 of the dust collector insert 10 is in this case arranged over the second layer 14 of the dust collector insert 10.
  • the second layer 14 of the dust collector insert 10 has the same shape as the cutout 16 from the first layer 12 of the dust collector insert 10.
  • the second layer 14 of the dust collector insert 10 is rotated by 90 degrees.
  • the first and second layers 12, 14 of the dust collector insert 10 are punctiformly connected to each other at four points 18.
  • the cutout 16 in the first layer 12 of the dust collector insert 10 is covered only in partial areas by the second layer 14 of the dust collector insert 10.
  • the cutout 16 in the first layer 12 of the dust collector insert 10 does not extend over the entire base area of the first layer 12.
  • the first layer 12 has slots 26 in this area. These slots 26 extend in the direction of the upper transverse side 22 of the first layer 12.
  • the slots 26 are in a straight shape as far as possible parallel to the Longitudinal sides 20 of the first layer 12 executed and terminate in front of the transverse side 22, which limits the outer dimensions of the first layer 12.
  • the slots 26 form segments 28 in the first layer 12 of the dust collector insert 10, which extend from the upper edge of the cutout 16 to approximately the upper transverse side 22 of the first layer 12.
  • the slots 26 allow movement of the segments 28 in the operation of the dust bag, when the dust collector insert 10 is traversed in the interior of the dust bag by a fluid.
  • FIG. 5 shows the top view of a dust collector insert 10 in circular form.
  • the first layer 12 of the dust collector insert 10 has a rectangular base. On this base cutouts 16 are arranged in a circular shape. In each case, two circular cutouts 16 are arranged directly adjacent to each other and thereby form a cutout pair 30. On the base of the first layer 12 a total of six pairs of cutouts 30 and thus twelve circular cutouts 16 are arranged. Centrally centered between the circular cutouts 16 of a pair of cutouts 30, a circular second layer 14 of the dust collector insert 10 is arranged in each case. The circular second layer 14 is connected via a point-shaped point 18 with the first layer 12 of the dust collector insert 10.
  • the circular second layer 14 is arranged in such a way between the cutouts 16 of a pair of cutouts 30 that the circular second layer 14 of the dust catcher insert 10 partially covers both cutouts 16 of a cutout pair 30.
  • the circular second layer 14 has the same shape and the same geometric dimensions as one of the twelve circular cutouts 16.
  • FIG. 6 shows the sectional view of a dust collector insert 10 in circular form.
  • the first layer 12 of the dust collector insert 10 has a rectangular cross section. On the edge side, a cutout pair 30 is arranged, which is composed of two adjacent cutouts 16. Above the first layer 12 of the dust collector insert 10, centered between each pair of cutouts 30, a second layer 14 of the dust collector insert 10 is arranged.
  • the second layer 14 of the dust collector insert 10 has the same shape and geometrical dimensions as one of the cutouts 16 of a cutout pair 30.
  • the second layers 14 of the dust collector inserts 10 are arranged between the cutouts 16 of a cutout pair 30 such that the second layers 14 Cover portions of both cutout 16 of a pair of cutouts 30.
  • FIG. 7 shows the sectional view of a dust collector insert 10 in the form of blanks in the operating position.
  • the first layer 12 of the dust collector insert 10 has a rectangular cross section. On the edge side, a cutout pair 30 is arranged, which is composed of two adjacent cutouts 16. Above the first layer 12 of the dust collector insert 10, centered between each pair of cutouts 30, is a second one Layer 14 of the dust collector insert 10 is arranged.
  • the second layer 14 of the dust collector insert 10 has the same shape and geometrical dimensions as one of the cutouts 16 of a cutout pair 30.
  • the second layers 14 of the dust collector inserts 10 are arranged between the cutouts 16 of a cutout pair 30 such that the second layers 14 are subregions cover both cutout 16 of a pair of cutouts 30.
  • the dust collector insert 10 is flowed through during operation by a fluid flow 32.
  • This fluid stream 32 passes through the dust collector insert 10 partially through the cutouts 16 in the first layer 12. Since these cutouts 16 are covered in partial areas by the second layer 14 of the dust collector insert 10, the fluid stream 32 strikes the cutouts 16 in the first layer 12 on the second layer 14 of the dust collector insert 10. Due to the selective attachment of the second layers 14 of the dust collector insert 10 on the first layer 12, the second layer 14 has sufficient mobility to be deflected by the flowing fluid stream 32. That is, the second layer 14 of the dust collector insert 10 is lifted in the operating position in partial areas of the first layer 12 of the dust collector insert 10 through the fluid flow 32.
  • FIG. 8 shows the top view of a dust collector insert 10 in modeled circular form.
  • the first layer 12 of the dust collector insert 10 has a rectangular base. On this base circular cutouts 16 are arranged. In each case, two circular cutouts 16 are arranged directly adjacent to each other and thereby form a cutout pair 30. On the base of the first layer 12 a total of six pairs of cutouts 30 and thus twelve circular cutouts 16 are arranged. Centrally centered between the circular cutouts 16 of a pair of cutouts 30, a second layer 14 of the dust collector insert 10 is arranged in each case. The second layer 14 is connected via a point-shaped point 18 with the first layer 12 of the dust collector insert 10.
  • the second layer 14 has the same geometric dimensions as a cutout 16 from the first layer 12 of the dust collector insert 10.
  • the shape of the second layer 14 is changed relative to the cutout 16 from the first layer 12 of the dust collector insert 10.
  • the cutouts 16 in the first layer 12 of the dust collector insert 10 are not covered by the second layers 12.
  • FIG. 9 shows the sectional view of a dust collector insert 10 in modeled circular form.
  • the first layer 12 of the dust collector insert 10 two pairs of cutouts 30 are arranged, which are formed by two adjacent cutouts 16. Above each cutout pair 30, a second layer 14 of the dust collector insert 10 is centered in each case.
  • the second layers 14 of the dust collector insert 10 below the first layer 12.
  • the second layers 14 of the dust collector insert 10 on both sides of to arrange first layer 12.
  • the second layers 14 of the dust collector insert 10 have a curved, upwardly open shape.
  • FIG. 10 shows the top view of a dust collector insert 10 in star shape.
  • the first layer 12 of the dust collector insert 10 has a square base. Almost centered on the base, a cutout 16 is arranged with a star-shaped basic section.
  • a second layer 14 is arranged above the first layer 12 of the dust collector insert 10.
  • This second layer 14 also has a star-shaped basic section.
  • the cutout 16 of the first layer 12 and the second layer 14 are approximately identical in terms of shape and size.
  • the second layer 14 of the dust collector insert 10 is arranged on the first layer 12 so that it covers portions of the cutout 16 in the first layer 12.
  • the second layer 14 is connected via punctiform locations 18 with the first layer 12 of the dust collector insert 10.
  • the second layers 14 are fixed to the first layer 12, that the first layer 12 to the upper wall portion 3 and the second layer to the lower wall portion 4 show. This ensures that, in the operating position of the dust filter bag 1, ie when the cutouts 16 flow through, the second layers 14 are erected or lifted off the first layer 12 and thereby push the entire dust collector insert 10 away from the lower wall region.
  • the dust collector insert 10 is moved with its first layer 12 further into the interior 9 of the dust filter bag 1 and can better absorb dust.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP16183166.4A 2015-08-28 2016-08-08 Sac de filtre a poussiere Active EP3135170B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015114330.5A DE102015114330A1 (de) 2015-08-28 2015-08-28 Staubfilterbeutel

Publications (2)

Publication Number Publication Date
EP3135170A1 true EP3135170A1 (fr) 2017-03-01
EP3135170B1 EP3135170B1 (fr) 2018-05-02

Family

ID=56609797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16183166.4A Active EP3135170B1 (fr) 2015-08-28 2016-08-08 Sac de filtre a poussiere

Country Status (2)

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EP (1) EP3135170B1 (fr)
DE (1) DE102015114330A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6063171A (en) * 1998-11-16 2000-05-16 Electrolux Llc Bactericidal vacuum cleaner filter bag
DE10030958A1 (de) * 1999-07-29 2001-02-01 Vorwerk Co Interholding Verfahren zum Staubsaugen mit einem Handstaubsauger sowie Filterbeutel beziehungsweise Staubsammelraum, insbesondere zur Verwendung in einem solchen Verfahren
DE202008007717U1 (de) * 2008-06-10 2008-08-07 Wolf Pvg Gmbh & Co. Kg Filterbeutel
DE102009009152A1 (de) * 2009-02-06 2010-08-12 Branofilter Gmbh Filterbeutel mit äußerem und innerem Beutel zum Einsatz in einem Staubsauger
DE202011108953U1 (de) 2011-12-02 2012-01-19 Branofilter Gmbh Staubfilterbeutel mit einer Staubfängereinlage
EP2465397A1 (fr) * 2010-12-17 2012-06-20 Wolf PVG GmbH & Co. KG Sac d'aspirateur et procédé destiné à la fabrication d'un sac d'aspirateur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214990A1 (de) * 1992-05-06 1993-11-11 Minnesota Mining & Mfg Staubsaugerbeutel und Verfahren zu seiner Herstellung
DE202006019108U1 (de) * 2006-12-19 2007-02-22 Branofilter Gmbh Staubfilterbeutel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6063171A (en) * 1998-11-16 2000-05-16 Electrolux Llc Bactericidal vacuum cleaner filter bag
DE10030958A1 (de) * 1999-07-29 2001-02-01 Vorwerk Co Interholding Verfahren zum Staubsaugen mit einem Handstaubsauger sowie Filterbeutel beziehungsweise Staubsammelraum, insbesondere zur Verwendung in einem solchen Verfahren
DE202008007717U1 (de) * 2008-06-10 2008-08-07 Wolf Pvg Gmbh & Co. Kg Filterbeutel
DE102009009152A1 (de) * 2009-02-06 2010-08-12 Branofilter Gmbh Filterbeutel mit äußerem und innerem Beutel zum Einsatz in einem Staubsauger
EP2465397A1 (fr) * 2010-12-17 2012-06-20 Wolf PVG GmbH & Co. KG Sac d'aspirateur et procédé destiné à la fabrication d'un sac d'aspirateur
DE202011108953U1 (de) 2011-12-02 2012-01-19 Branofilter Gmbh Staubfilterbeutel mit einer Staubfängereinlage

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DE102015114330A1 (de) 2017-03-02
EP3135170B1 (fr) 2018-05-02

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