EP3366179B1 - Buse statique d'aspirateur - Google Patents

Buse statique d'aspirateur Download PDF

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Publication number
EP3366179B1
EP3366179B1 EP17157569.9A EP17157569A EP3366179B1 EP 3366179 B1 EP3366179 B1 EP 3366179B1 EP 17157569 A EP17157569 A EP 17157569A EP 3366179 B1 EP3366179 B1 EP 3366179B1
Authority
EP
European Patent Office
Prior art keywords
suction
vacuum cleaner
suction mouth
mouth edge
nozzle 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.)
Active
Application number
EP17157569.9A
Other languages
German (de)
English (en)
Other versions
EP3366179A1 (fr
Inventor
Philipp Rath
Hans-Joachim Steudtner
Udo MAUELSHAGEN
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.)
Wessel Werk GmbH
Original Assignee
Wessel Werk 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 Wessel Werk GmbH filed Critical Wessel Werk GmbH
Priority to EP17157569.9A priority Critical patent/EP3366179B1/fr
Priority to CN201810056759.XA priority patent/CN108498005B/zh
Publication of EP3366179A1 publication Critical patent/EP3366179A1/fr
Application granted granted Critical
Publication of EP3366179B1 publication Critical patent/EP3366179B1/fr
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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
    • A47L9/02—Nozzles
    • 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
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0416—Driving means for the brushes or agitators driven by fluid pressure, e.g. by means of an air turbine
    • 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
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0606—Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads
    • 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
    • A47L9/106—Dust removal
    • 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
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles

Definitions

  • the invention relates to a static Staubsauger foundeddüse with a housing and with at least one suction side arranged thereunder suction mouth, which extends in a working direction and a transverse direction.
  • the suction mouth is limited in the working direction by a front suction mouth edge and a rear suction mouth edge.
  • a suction chamber connects to the suction mouth, which is connected to a suction channel for guiding a suction air flow.
  • the generic Staubsauger convinceddüse is particularly intended for use with household vacuum cleaners.
  • a static Staubsauger convinceddüse is characterized in that no movable cleaning elements, in particular no brush rollers are provided in the suction operation.
  • the suction channel is suitably connected to the air duct of a vacuum cleaner.
  • the cleaning of floors with vacuum cleaners is usually associated with a significant noise pollution.
  • the largest noise emission is usually caused by the blower for generating the suction air flow and by the motor driving it.
  • flow noises occur in the facilities for guiding the suction air flow, in particular at the inlet opening of the Staubsauger convinceddüse. Functionally necessary there, the suction air flow must be deflected, causing noise causing turbulence.
  • the invention has for its object to provide a static Staubsauger Camilldüse with reduced flow noise, which can be built more compact and also has an improved noise reduction.
  • Solution to this problem and subject of the invention is a Staubsauger foundeddüse according to claim 1 and a vacuum cleaner according to claim 15.
  • the generic static Staubsauger foundeddüse is particularly intended for household vacuum cleaners and formed with a housing on which the underside in a working direction and in a transverse direction extending suction mouth is arranged.
  • the suction mouth is limited by a front suction mouth edge and a rear suction mouth edge.
  • a suction chamber arranged inside the housing, which is connected to a suction channel for guiding a suction air flow, connects to the suction mouth.
  • an undercut surface with a width of between 3 mm and 10 mm is arranged in the suction space starting from the front suction mouth edge.
  • the undercut surface is inclined relative to the horizontal by an angle between 30 ° and 60 °.
  • the invention is based on the surprising finding that in the angular range according to the invention, even with a very small undercut between 3 mm and 10 mm, sufficient flow calming can be achieved, which leads to an effective noise reduction. Due to the inclination of the undercut surface, sound waves propagating within the suction space are reflected at the undercut surface in the direction of the center of the suction space - both when they impinge in the horizontal and in the vertical direction.
  • the front suction mouth edge and the rear suction mouth edge may abut the bottom surface at the same time.
  • the front suction mouth edge and the rear suction mouth edge preferably extend in a common plane (sowing level), which can coincide with the ground surface.
  • the front suction mouth edge and the rear suction mouth edge penetrate particularly well continuously with a flat seal Floor surface - for example, the top of a carpet - in contact to build a high differential pressure with a correspondingly high cleaning effect can.
  • the front suction mouth edge is preferably straight. This also results in a straight and homogeneous formation of the undercut area. This leads in particular to a uniform flow calming and sound reduction can be achieved.
  • the rear suction mouth edge preferably has a deviating from the front suction mouth edge course.
  • it may have at least one sectionally curved course, comprising a plurality of offset, mutually parallel cranked portions and / or at least partially formed with linear with respect to the front suction mouth edge inclined portions.
  • the (measured in the direction of work) width of the suction mouth in the middle of the Staubsauer foundeddüse is greater than at the transversely outer ends of the suction mouth.
  • the suction mouth width decreases monotonically in the transverse direction from the center in both directions.
  • a sealing plateau (in particular directly) adjoins the underside of the housing in the working direction in front of the front suction mouth edge.
  • the sealing plateau is opposite the Sauradee by 5 ° or less, preferably 3 ° or less inclined.
  • the sealing plateau runs within the sowing level, which comprises at least the lowest point of the front suction mouth edge.
  • the sealing plateau has a plateau width of at least 5 mm, preferably 8 mm, measured in the working direction. Particularly preferred is a plateau width of 15 mm or more.
  • the sealing plateau is located in the cleaning operation closely to the floor surface to be cleaned and thus forms in the working direction forward a sealing completion, which dampens a sound emission from the suction mouth out. This effect is increasingly evident in particularly flat and particularly wide sealing plateaus.
  • the sealing plateau extends over half, preferably over at least 75% of the measured length in the transverse direction. Most preferably, the sealing plateau extends over at least 95% or the entire length of the front suction mouth edge. Thus, a uniform sealing and sound insulation effect can be achieved.
  • the undercut surface extends over at least half, in particular over at least 75% of the front suction mouth edge. It is very particularly preferred if the sealing surface extends over at least 95% or the entire length of the front suction mouth edge.
  • the suction mouth itself makes up at least 95% of the width of the Staubsauger foundeddüse in the transverse direction.
  • the front suction mouth edge preferably extends over at least 95% or the entire width of the suction mouth in the transverse direction.
  • the front suction mouth edge (in a longitudinal section) rounded with a radius of curvature between 0.25 mm and 1 mm is formed.
  • the radius of curvature is about 0.5 mm. indicated curvature is achieved by the front suction mouth edge at least in sections, but preferably over at least 95% of their entire length.
  • the radius of curvature is dimensioned so that on the one hand, a dimensionally stable and practical suction mouth edge is formed, which leads neither to damage the flooring nor - especially in the embodiment as a plastic injection molded part - even a risk of destruction is exposed under normal use.
  • the radius is chosen small enough that the underside of the Staubsauer convinceddüse - in particular an upstream sealing plateau - merges almost seamlessly into the undercut surface.
  • the undercut surface moves as close as possible to the opening of the suction mouth, whereby it can develop its effect particularly well.
  • a thread lifter is embedded in the bottom of the housing in front of the front suction mouth. This serves to lift individual fibers from the surface of a particular textile floor covering and suspend the suction air flow. In conjunction with the sharp deflection of the suction air flow at the front suction mouth edge results in this - despite the reduced noise emission - an improved cleaning effect.
  • a step surface with a width of at least 2 mm, which is inclined relative to the horizontal by a smaller angle than the undercut surface closes. This is again an additional flow calming by widening of the Achieved flow cross section. With a sufficiently large difference between the two angles of inclination also results in a gusset, which can be fluidically active and form a static vortex.
  • the step surface is formed parallel to the horizontal.
  • the suction chamber to the front end of the undercut surface connects to a wall surface which is at right angles to the horizontal.
  • the cross-sectional expansion remains constant following the undercut surface.
  • Even a small broadening of the invention 3 mm to 10 mm may already be sufficient to achieve a sufficient flow calming for effective noise minimization.
  • sound waves that arise at the front suction mouth edge are reflected particularly effectively into the interior of the suction chamber.
  • the side surface is expediently continuous in a boundary of the suction channel for the suction of the suction air stream.
  • the invention is also a vacuum cleaner.
  • This has a fan for generating a suction air flow and a dirt collecting container for the separation of dirt particles from the suction air flow. Further, a Saugluftstrom Entry is provided, through which the suction air flow can be introduced into the dirt collecting and which is connectable to a static Staubsauger convinceddüse described above.
  • the Fig. 1 shows a partial section in the longitudinal direction through a Staubsauger foundeddüse according to the invention according to a first embodiment.
  • This has a housing 1 and a suction mouth 2 arranged on the underside thereof. How to compare with the Fig. 2 takes the suction mouth 2 extends in a working direction x and a transverse direction y.
  • the suction mouth 2 is limited by a front suction mouth edge 3 and a rear suction mouth edge 4 in the working direction x.
  • On the upper side closes to the suction 2, a suction chamber 5, which is connected to a suction channel 6 for guiding a suction air stream.
  • the housing 1 is connected via a coupling part 7 with a connecting piece 8, which with the Air duct of a vacuum cleaner is connectable.
  • the suction channel 6 of the housing 1 is connected to the connecting part 8 by a flexible corrugated hose 9.
  • the coupling part 7 is rotatably connected to the housing 1 at a first, in the transverse direction y extending pivot axis 10 and at a second in the transverse direction y extending pivot axis 11 with the connecting part 8.
  • the second pivot axis 11 is aligned at the same time with the axis of rotation of support rollers 12, which are held on the coupling part 7.
  • the aforementioned structure is also referred to as a double-joint nozzle.
  • an undercut surface 13 having a width a between 3 mm and 10 mm is arranged in the suction chamber 5 starting from the front suction mouth edge 3.
  • the undercut surface 13 is inclined relative to the horizontal 14 by an angle ⁇ between 30 ° and 60 °. In the embodiment, the preferred angle of 45 ° is used. For better clarity, the angle of change to ⁇ is shown in the figure.
  • the front suction mouth edge 3 and the rear suction mouth edge 4 extend in a common plane, which coincides with the horizontal 14 and is also referred to as a so-called suction level. If you both the Fig. 1 as well as the Fig. 2 takes, the front suction mouth edge 3 is straight. That is, it runs in a single direction, in the embodiment in the transverse direction y.
  • a sealing plateau 15 On the underside of the housing 1 includes in the working direction x in front of the front suction mouth edge 3, a sealing plateau 15, which is not inclined relative to the horizontal 14.
  • the sealing plateau 15 runs within the sow level.
  • the plateau width measured in the working direction x is at least 5 mm.
  • a Targleitschräge 16th In front of the sealing plateau 15 is a Materialsgleitschräge 16th provided, which is inclined relative to the horizontal 14 by a Aufgleitwinkel between 5 ° and 20 °.
  • a plateau-like sliding bevel 17 adjoins, which is inclined relative to the horizontal 14 by an angle ⁇ of between 1 ° and 5 °, in particular 3 °.
  • the Abgleitschräge has a width c between 25 mm and 45 mm.
  • a bristle strip 18 is embedded in the sealing plateau 15 or behind the rear suction mouth edge 4 in the sliding guide slope 17.
  • Engraved means in each case that the textile material of the bristle strips 18, preferably inclined bristles for velor, at least with individual fibers or filaments over the surface of the sealing plateau 15 and the Abgleitschräge 17 protrudes. However, these fibers can be displaced by compression into a recess within the surface, so that they no longer survive.
  • the sealing plateau 15 extends over the entire length of the front suction mouth edge 3 in the transverse direction y.
  • the front suction mouth edge 3 in turn extends over almost the entire width of the suction mouth 2 in the transverse direction y with the exception of a slight edge region of less than 10 mm.
  • a rocker switch 20 is arranged on the housing 1.
  • Fig. 1 shown embodiment includes at the front end of the undercut surface 13 a step surface 21 with a width D of at least 2 mm.
  • the step surface 21 is arranged parallel to the horizontal 14.
  • At the front end of the step surface 21 includes an edge surface 22 which is perpendicular to the horizontal 14.
  • Fig. 3 differs here in that the edge surface 22 directly adjoins the undercut surface 13. In both variants, the edge surface 22 continuously merges into a boundary of the suction channel 6.

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

Claims (15)

  1. Suceur statique de sol pour aspirateur, pourvu d'un boîtier (1) avec au moins une bouche d'aspiration (2) placée sur la face inférieure de celui-ci, s'étendant dans une direction de travail (x) et dans une direction longitudinale (y), qui est délimitée par une arête antérieure de bouche d'aspiration (3) et une arête postérieure de bouche d'aspiration (4) et avec un espace d'aspiration (5) se raccordant sur la face supérieure de la bouche d'aspiration (2), lequel est raccordé sur un canal aspirant (6), destiné à guider un flux d'air aspirant, caractérisé en ce que dans l'espace d'aspiration (5), à partir de l'arête antérieure de bouche d'aspiration (3) est placée une surface de contre-dépouille (13) d'une largeur (a) comprise entre 3 mm et 10 mm et en ce que la surface de contre-dépouille (13) est inclinée par rapport à l'horizontale (14) d'un angle (α) compris entre 30° et 60°.
  2. Suceur statique de sol pour aspirateur selon la revendication 1, caractérisé en ce que l'arête antérieure de bouche d'aspiration et l'arête postérieure de bouche d'aspiration (3) s'écoulent dans un plan commun (plan d'aspiration).
  3. Suceur statique de sol pour aspirateur selon la revendication 1 ou 2, caractérisé en ce que l'arête antérieure de bouche d'aspiration (3) est conçue de forme droite.
  4. Suceur statique de sol pour aspirateur selon la revendication 1 à 3, caractérisé en ce que sur la face inférieure du boîtier (1), à l'avant de l'arête antérieure de bouche d'aspiration (3) dans la direction de travail (x) se raccorde un plateau d'étanchéité (15), qui par rapport à l'horizontale est incliné de 5° ou moins, de préférence de 3° ou moins, notamment n'est pas incliné du tout et qui présente une largeur de plateau (b) mesurée dans la direction de travail (x) d'au moins 5 mm, de préférence d'au moins 8 mm.
  5. Suceur statique de sol pour aspirateur selon la revendication 4, caractérisé en ce que le plateau d'étanchéité (15) s'étend sur au moins 75 % de la longueur, notamment sur toute la longueur de l'arête antérieure de bouche d'aspiration (3) dans la direction longitudinale (y).
  6. Suceur statique de sol pour aspirateur selon les revendications 1 à 5, caractérisé en ce que la surface de contre-dépouille (13) s'étend sur au moins 75 % de la longueur, notamment sur toute la longueur de l'arête antérieure de bouche d'aspiration (3) dans la direction longitudinale (y).
  7. Suceur statique de sol pour aspirateur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'arête antérieure de bouche d'aspiration (3) s'étend sur toute la largeur de la bouche d'aspiration (2) dans la direction longitudinale (y).
  8. Suceur statique de sol pour aspirateur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'arête antérieure de bouche d'aspiration (3) est conçue de forme arrondie, avec un rayon de courbure compris entre 0,25 mm et 1 mm, de préférence de 0,5 mm.
  9. Suceur statique de sol pour aspirateur selon l'une quelconque des revendications 1 à 8, caractérisé en ce que sur la face inférieure du boîtier (1), à l'avant de l'arête antérieure de bouche d'aspiration (3) est incorporé un relève-fil (16).
  10. Suceur statique de sol pour aspirateur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que dans l'espace d'aspiration, à partir de l'extrémité antérieure de la surface de contre-dépouille (13) est placée une surface étagée d'au moins 2 mm de largeur (d), qui par rapport à l'horizontale (14) est inclinée d'un angle inférieur à celui de la surface de contre-dépouille (13).
  11. Suceur statique de sol pour aspirateur selon la revendication 10, caractérisé en ce que la surface étagée (21) est conçue en état parallèle à l'horizontale (14).
  12. Suceur statique de sol pour aspirateur selon la revendication 10 ou 11, caractérisé en ce que dans l'espace d'aspiration (5), une surface de bordure (22) qui est placée à angle droit par rapport à l'horizontale (14) se raccorde sur l'extrémité antérieure de la surface étagée (21).
  13. Suceur statique de sol pour aspirateur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que dans l'espace d'aspiration (5), une surface de bordure (12) qui est placée à angle droit par rapport à l'horizontale (14) se raccorde sur l'extrémité antérieure de la surface de contre-dépouille (13).
  14. Suceur statique de sol pour aspirateur selon la revendication 12 ou 13, caractérisé en ce que la surface de bordure (22) passe en continu dans une bordure du canal aspirant (6).
  15. Aspirateur, muni d'un ventilateur, destiné à générer un flux d'air aspirant, d'un réservoir collecteur de saletés, destiné à séparer des particules de saleté du flux d'air aspirant et d'un guide de flux d'air aspirant, destiné à introduire le flux d'air aspirant dans le réservoir collecteur de saletés, caractérisé par un suceur statique de sol pour aspirateur selon l'une quelconque des revendications 1 à 14, que l'on peut relier avec le guide de flux d'air aspirant.
EP17157569.9A 2017-02-23 2017-02-23 Buse statique d'aspirateur Active EP3366179B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17157569.9A EP3366179B1 (fr) 2017-02-23 2017-02-23 Buse statique d'aspirateur
CN201810056759.XA CN108498005B (zh) 2017-02-23 2018-01-22 静止的吸尘器底部吸嘴以及吸尘器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17157569.9A EP3366179B1 (fr) 2017-02-23 2017-02-23 Buse statique d'aspirateur

Publications (2)

Publication Number Publication Date
EP3366179A1 EP3366179A1 (fr) 2018-08-29
EP3366179B1 true EP3366179B1 (fr) 2019-07-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17157569.9A Active EP3366179B1 (fr) 2017-02-23 2017-02-23 Buse statique d'aspirateur

Country Status (2)

Country Link
EP (1) EP3366179B1 (fr)
CN (1) CN108498005B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3094623B1 (fr) * 2019-04-05 2022-12-16 Seb Sa Suceur d’aspirateur pourvu d’une nervure de grattage arrière

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB461452A (en) * 1935-11-29 1937-02-17 British Vacuum Cleaner & Engin Improvements in or relating to nozzles for suction cleaning machines
JPH01223918A (ja) * 1988-03-03 1989-09-07 Tokyo Electric Co Ltd 電気掃除機の吸込口体
DE19738046A1 (de) * 1997-08-30 1999-03-11 Wessel Werk Gmbh Statische Staubsaugerdüse, insbesondere für Haushaltsstaubsauger
FR2965165B1 (fr) * 2010-09-24 2013-07-12 Seb Sa Regles de grattage de suceur d'aspirateur
CN104703524B (zh) * 2012-12-21 2017-03-29 伊莱克斯公司 具有进风孔的被动真空吸尘器吸嘴
EP2995234B1 (fr) * 2014-08-28 2017-01-25 New Ermes Europe S.r.l. Buse d'aspiration pour aspirateur ou autre avec dispositif soulevant la poussière
DE102015101019A1 (de) * 2015-01-23 2016-07-28 Wessel-Werk Gmbh Gleitsohle aus Kunststoff für eine Staubsaugerdüse
DE102015108051B4 (de) * 2015-05-21 2019-08-22 Vorwerk & Co. Interholding Gmbh Hartbodendüse für Grobgut und Feinstaubaufnahme

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN108498005B (zh) 2021-12-17
CN108498005A (zh) 2018-09-07
EP3366179A1 (fr) 2018-08-29

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