EP3488752A1 - Floor nozzle for a vacuum cleaner - Google Patents
Floor nozzle for a vacuum cleaner Download PDFInfo
- Publication number
- EP3488752A1 EP3488752A1 EP17203366.4A EP17203366A EP3488752A1 EP 3488752 A1 EP3488752 A1 EP 3488752A1 EP 17203366 A EP17203366 A EP 17203366A EP 3488752 A1 EP3488752 A1 EP 3488752A1
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- European Patent Office
- Prior art keywords
- elevation
- staubsaugerbodendüse
- suction mouth
- staubsaugerbodendüse according
- planar region
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- 230000007704 transition Effects 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
Definitions
- the invention relates to a Staubsauger foundeddüse, in particular a static Staubsauger foundeddüse with a housing and a lower side disposed on the housing sliding sole.
- a suction mouth is arranged, which extends in a transverse direction and which is bounded by a boundary.
- the sliding sole has in a working direction perpendicular to the transverse direction in front of and / or behind the suction mouth a flat area.
- Vacuum cleaner floor nozzles are intended for use with vacuum cleaners.
- the cleaning principle is based on the fact that in the vacuum cleaner, a fan generates a suction air flow with which to be cleaned of surfaces to be cleaned, especially soil surfaces dirt particles.
- the vacuum cleaner has a dirt collecting device, in which the dirt particles are separated and collected from the suction air stream.
- filter bag arrangements and cyclone separators are customary.
- a suction air guide is provided which feeds the dirt collecting space to the suction air flow.
- vacuum cleaner floor nozzles are known with the generic features.
- the underside sliding sole faces a floor surface to be cleaned in the cleaning operation.
- the sliding sole can rest on permeable floor coverings, such as carpets, directly on the floor surface during operation.
- support means such as bristle strips, Support rollers and the like is kept at a small distance from the bottom surface.
- the minimum distance between the sliding sole and the floor surface to be cleaned in smooth-floor operation is usually at least 2 mm.
- CN 104367268 B provided on the sliding sole a "sealing rib" of small width, which projects perpendicularly to the sliding sole.
- a "sealing rib" of small width which projects perpendicularly to the sliding sole.
- Such a rib can easily catch on bumps and thus complicate the handling of Staubsauger convinceddüse.
- the invention has for its object to provide a Staubsauger foundeddüse with favorable cleaning properties, at the same time a conservation of the floor covering to be cleaned is achieved and is easy to handle.
- the sliding sole between the flat region and the suction mouth has a continuously adjoining the planar region elevation, which projects beyond the extension of the flat region down. Due to the continuous transition, the soleplate can easily slide over bumps and obstacles on the floor to be cleaned, especially coarse dirt particles.
- the elevation forms an integral part of the soleplate and is seamlessly integrated into it.
- the elevation has a height of less than 2 mm, in particular less than 1.5 mm.
- Such slight inflation is sufficient to produce a cleaning-effective flow acceleration in the region of the suction mouth edge adjacent to the elevation.
- the projection is small enough to allow safe sliding in conjunction with obstacles.
- the height of the elevation is at least 0.5 mm, in particular at least 1 mm.
- the elevation has a width of less than 3 mm, in particular less than 2 mm. Wider elevations form too large a footprint, which provides an additional seal in the case of Festsauergens.
- the width of the elevation is determined by the half width of the profile.
- a transition region of the elevation between the planar region and the half maximum height of the elevation preferably has a width of less than 10 mm. Most preferably, the transition region is narrower than 5 mm. The minimum width for the transition region is at least 1 mm, preferably at least 3 mm. In the specified parameter ranges, a sufficiently gentle transition from the flat region to the superelevation is possible without taking up too much installation space.
- the planar area is designed as a suction plateau.
- a Saugplateau is in working position, in particular when the Staubsauger convinceddüse in contact with the floor surface to be cleaned is aligned parallel to this bottom surface.
- the suction plateau has a preferred width between 3 mm and 15 mm and serves in particular for supporting the Staubsauger convinceddüse on air-permeable floor coverings, such as carpets.
- the sealing plateau creates a certain sealing effect between the underside of the vacuum cleaner floor nozzle and the floor material so that a substantial portion of the suction air flow is passed through the floor material. As a result, dirt particles can be included.
- the elevation according to the invention is in this configuration in the air-permeable and elastic soil material.
- the planar region is designed as a sliding bevel.
- This may in particular be a slanted slope in front of the front suction mouth edge or a slip slope behind the rear suction mouth edge.
- a Aufgleitschräge preferably has a width between 5 mm and 20 mm, a Abgleitschräge a preferred width between 15 mm and 40 mm.
- the sliding bevel is inclined in each case with respect to the horizontal or with respect to the surface to be cleaned - by an angle between 3 ° and 20 °, in particular by 5 ° to 10 °.
- the planar region is formed as a recess of the sliding sole.
- the elevation can reach the same level at its highest point as the lateral projecting area.
- the transition between the planar region and the elevation is smooth.
- the contour of the superelevation follows a continuously differentiable, preferably a 2-fold continuously differentiable curve. Curves of this embodiment form a particularly soft transition, which leads to low sliding resistance when hitting obstacles.
- the contour of the elevation may also be linear at least in sections. Particularly preferably, the contour of the elevation does not fall below a radius of curvature of 1 mm. Even large radii of curvature in the transition areas contribute to a particularly smooth transition.
- the maximum height of the elevation has a distance from the boundary of the suction mouth of less than 3 mm, in particular less than 1 mm.
- the elevation is arranged directly adjacent to the suction mouth edge.
- an inner plateau with a width between 1 mm and 3 mm between the suction mouth and the elevation is arranged immediately adjacent to the boundary of the suction mouth.
- the inner plateau does not overhang the flat surface. Preferably, it is horizontally aligned in the working position.
- the transition between the elevation and the inner plateau is also continuous.
- the inner plateau ends with the suction mouth edge, which simultaneously provides the boundary of the suction mouth. Due to the elevation and the suction mouth edge two fluidic resistances are connected in short distance one behind the other, which leads to a cleaning technology favorable turbulence.
- the range of elevation between the first point, starting from the flat area at which half the maximum height is reached to the last point before the boundary of the suction mouth at which half the maximum height is reached, is also referred to as the "peak" of the elevation.
- the section between the dome and the flat area forms the transition between the flat area and the elevation.
- the slope of the contour of the transition in the direction of the suction mouth edge increases monotonously, in particular strictly monotonically, and decreases monotonically, in particular strictly monotonically, in the region of the summit of the elevation.
- the tip of the elevation in the form of a circular arc segment, in particular a semicircle is formed.
- the summit of the elevation has a plateau.
- the plateau expediently has a width between 0.3 mm and 1 mm.
- the Staubsauger foundeddüse has a housing 1, on the underside of a sliding sole 2 is arranged. Within the sliding sole 2, a suction mouth 3 is provided, which is connected to receive a suction air flow to a suction air.
- the suction air duct comprises one in one Working direction x rear end of the housing connected connection flange 4 for connection to a vacuum cleaner.
- two rollers 5 are provided for supporting the housing.
- the suction mouth 3 extends substantially in a transverse direction y transverse to the working direction x.
- the boundary 6 of the suction mouth can be seen, which limits the suction mouth 3.
- To the sides in the transverse direction y out of the suction mouth is open to Randabsaugung formed.
- the profiling of the sole plate 2 according to the invention is in various embodiments in the FIGS. 2A to 2F shown on the example of the rear suction mouth edge 6.
- the front suction mouth edge can alternatively or additionally also a FIGS. 2A to 2F similar, mirrored in the working direction x course.
- FIG. 2A shown profile of the sole of a first embodiment is only partially in the area immediately behind then shown to the suction 3.
- the suction mouth is only indicated in the form of the rear suction mouth wall 7, which is inclined inwardly in the exemplary embodiment.
- the rear suction mouth wall 7 can also extend vertically or subsequently inclined outwards to the suction mouth.
- a planar region 8 in the form of a horizontally extending suction plateau 9 is arranged behind the suction mouth 3. Rearward connects to the plateau 9 a Abgleitschräge 10 with an inclination angle ⁇ relative to the horizontal of about 7 °.
- an elevation 11 is arranged between the flat area 8, 9 and the suction mouth 3, which protrudes downwards from an extension 12 of the flat area 8, 9 by a maximum height h of less than 2 mm.
- the elevation 11 is not drawn to scale, but greatly oversubscribed.
- the half-width b of the elevation 11 is smaller than 3 mm, while the transition region between the elevation 11 and the flat area 8, 9 has a width c of less than 10 mm.
- FIG. 2B Another alternative embodiment is in Fig. 2B shown. There, the flat area 9 without Saugplateau is formed directly as Abgleitschräge 10. The structure is otherwise essentially in accordance with the embodiment Fig. 2A identical.
- an inner plateau 13 between the elevation 11 and the suction mouth 3 is formed with a width a. This runs parallel to the horizontal starting from the rear suction mouth edge 6.
- the elevation 11 is additionally formed with a plateau 14. This has a maximum width d of 0.5 mm.
- Fig. 2E is the tip of the elevation 11 between the two half-value points as a circular arc segment, specifically designed as a semicircular arc.
- FIG. 2F Another variant is in Fig. 2F shown.
- the cross section of the elevation 11 corresponds there substantially to the illustration Fig. 2C with an inner plateau 13 and a suction area 9 designed as a flat area 8.
- the special feature is that the suction plateau 9 is formed as part of a recess 14 in the sole plate 2.
- the recess becomes - how one of a comparative consideration with the Fig. 3 removes - formed so that in addition to the flat region 8, 9 laterally projecting portions 15 are arranged, which are at least partially in alignment with the Abgleitschräge 10.
- the highest point of the elevation 11 reaches the same level as the laterally projecting areas 15.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
Die Erfindung betrifft eine Staubsaugerbodendüse mit einem Gehäuse (1) einer unterseitig an dem Gehäuse (1) angeordneten Gleitsohle (2) und einem in der Gleitsohle (2) angeordneten Saugmund (3), welcher sich in einer Querrichtung (y) erstreckt und welcher durch eine Berandung (6) begrenzt wird. Die Gleitsohle (2) weist in einer senkrecht zu der Querrichtung (y) stehenden Arbeitsrichtung (x) vor und/oder hinter dem Saugmund (3) einen ebenen Bereich (8) auf. Erfindungsgemäß weist die Gleitsohle (2) zwischen dem ebenen Bereich (8) und dem Saugmund (3) eine an den ebenen Bereich (8) kontinuierlich anschließende Überhöhung (11) auf, welche über die Verlängerung (12) des ebenen Bereichs (8) übersteht.The invention relates to a Staubsaugerbodendüse with a housing (1) arranged on the underside of the housing (1) sliding sole (2) and in the sliding sole (2) arranged suction mouth (3) which extends in a transverse direction (y) and which by a boundary (6) is limited. The sliding sole (2) has a plane region (8) in front of and / or behind the suction mouth (3) in a working direction (x) perpendicular to the transverse direction (y). According to the invention, the sliding sole (2) has an elevation (11) which continuously adjoins the flat area (8) between the flat area (8) and the suction mouth (3) and projects beyond the extension (12) of the flat area (8) ,
Description
Die Erfindung betrifft eine Staubsaugerbodendüse, insbesondere eine statische Staubsaugerbodendüse mit einem Gehäuse und einer unterseitig an dem Gehäuse angeordneten Gleitsohle. In der Gleitsohle ist ein Saugmund angeordnet, welcher sich in einer Querrichtung erstreckt und welcher durch eine Berandung begrenzt wird. Die Gleitsohle weist in einer senkrecht zu der Querrichtung stehenden Arbeitsrichtung vor und/oder hinter dem Saugmund einen ebenen Bereich auf.The invention relates to a Staubsaugerbodendüse, in particular a static Staubsaugerbodendüse with a housing and a lower side disposed on the housing sliding sole. In the sliding sole a suction mouth is arranged, which extends in a transverse direction and which is bounded by a boundary. The sliding sole has in a working direction perpendicular to the transverse direction in front of and / or behind the suction mouth a flat area.
Staubsaugerbodendüsen sind zur Verwendung mit Staubsaugern vorgesehen. Dabei beruht das Reinigungsprinzip darauf, dass in dem Staubsauger ein Gebläse einen Saugluftstrom erzeugt, mit dem von zu reinigenden Oberflächen, insbesondere Bodenflächen Schmutzpartikel abgezogen werden. Der Staubsauger weist eine Schmutzsammeleinrichtung auf, in der die Schmutzpartikel aus dem Saugluftstrom abgetrennt und gesammelt werden. Dabei sind insbesondere Filtertütenanordnungen und Zyklonabscheider üblich.Vacuum cleaner floor nozzles are intended for use with vacuum cleaners. In this case, the cleaning principle is based on the fact that in the vacuum cleaner, a fan generates a suction air flow with which to be cleaned of surfaces to be cleaned, especially soil surfaces dirt particles. The vacuum cleaner has a dirt collecting device, in which the dirt particles are separated and collected from the suction air stream. In particular, filter bag arrangements and cyclone separators are customary.
Zur Steuerung des Saugluftstroms durch einen Benutzer ist eine Saugluftführung vorgesehen, welche dem Saugluftstrom den Schmutzsammelraum zuleitet. Zur Führung des Saugluftstromes an zu reinigenden Bodenflächen sind Staubsaugerbodendüsen mit den gattungsgemäßen Merkmalen bekannt. Die unterseitige Gleitsohle ist im Reinigungsbetrieb einer zu reinigenden Bodenfläche zugewandt. Dabei kann die Gleitsohle im Betrieb auf durchlässigen Bodenbelägen, wie beispielsweise Teppichen, unmittelbar an der Bodenfläche anliegen. Für luftundurchlässige Bodenflächen ist üblicherweise vorgesehen, dass die Gleitsohle mit Tragmitteln, beispielsweise Borstenstreifen, Tragrollen und dergleichen in einem geringen Abstand zur Bodenfläche gehalten ist. Dabei stellt sich ein geringer Spalt zwischen der Staubsaugerbodendüse und der Bodenfläche ein, durch welchen der Saugluftstrom hindurchtritt, bevor er über den Saugmund der Saugluftführung zugeleitet wird. Um Kollisionen zwischen der Gleitsohle und dem Bodenbelag zu vermeiden, beträgt der minimale Abstand zwischen der Gleitsohle und der zu reinigenden Bodenfläche im Glattbodenbetrieb üblicherweise zumindest 2 mm.For controlling the suction air flow by a user, a suction air guide is provided which feeds the dirt collecting space to the suction air flow. To guide the suction air flow to be cleaned floor surfaces vacuum cleaner floor nozzles are known with the generic features. The underside sliding sole faces a floor surface to be cleaned in the cleaning operation. In this case, the sliding sole can rest on permeable floor coverings, such as carpets, directly on the floor surface during operation. For air-impermeable bottom surfaces is usually provided that the sliding sole with support means, such as bristle strips, Support rollers and the like is kept at a small distance from the bottom surface. In this case, a small gap between the Staubsaugerbodendüse and the bottom surface, through which the suction air flow passes before it is fed via the suction port of the suction air. In order to avoid collisions between the sliding sole and the floor covering, the minimum distance between the sliding sole and the floor surface to be cleaned in smooth-floor operation is usually at least 2 mm.
Um die Reinigungseigenschaften einer Staubsaugerbodendüse zu optimieren, werden die Geometrien der Gleitsohlen kontinuierlich weiterentwickelt. Dabei ist stets ein Ausgleich zwischen den Zielen einer guten Reinigungsleistung, der Schonung des zu reinigenden Bodenbelages sowie der Handhabbarkeit anzustreben. Dies wird weiterhin dadurch erschwert, dass im Zuge der EU Ökodesign-Richtlinie die elektrische Leistung von Haushaltsstaubsaugern (und damit die physikalische erreichbare Saugleistung) auf 900 Watt begrenzt sind.In order to optimize the cleaning properties of a vacuum cleaner floor nozzle, the geometries of the sliding soles are continuously being further developed. A balance between the goals of a good cleaning performance, the protection of the floor covering to be cleaned and the handling should always be sought. This is made even more difficult by the fact that the electrical performance of household vacuum cleaners (and thus the physically achievable suction power) is limited to 900 watts in the EU Ecodesign Directive.
Um im Bereich des Saugmundes höhere Strömungsgeschwindigkeiten zu erreichen ist beispielsweise aus
Demgegenüber ist in
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Staubsaugerbodendüse mit günstigen Reinigungseigenschaften anzugeben, bei der gleichzeitig eine Schonung des zu reinigenden Bodenbelages erzielt wird und die einfach zu handhaben ist.Against this background, the invention has for its object to provide a Staubsaugerbodendüse with favorable cleaning properties, at the same time a conservation of the floor covering to be cleaned is achieved and is easy to handle.
Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Staubsaugerbodendüse nach Anspruch 1. Bevorzugte Ausgestaltungen sind in den Unteransprüchen angegeben.The invention and solution of this problem is a Staubsaugerbodendüse according to claim 1. Preferred embodiments are specified in the dependent claims.
Ausgehend von der gattungsgemäßen Staubsaugerbodendüse ist erfindungsgemäß vorgesehen, dass die Gleitsohle zwischen dem ebenen Bereich und dem Saugmund eine an den ebenen Bereich kontinuierlich anschließende Überhöhung aufweist, welche über die Verlängerung des ebenen Bereichs nach unten übersteht. Durch den kontinuierlichen Übergang kann die Gleitsohle einfach über Bodenunebenheiten und Hindernisse auf den zu reinigenden Boden, insbesondere grobe Schmutzpartikel hinweggleiten. Dabei bildet die Überhöhung einen integralen Bestandteil der Gleitsohle und ist in diese nahtlos integriert.Starting from the generic Staubsaugerbodendüse according to the invention it is provided that the sliding sole between the flat region and the suction mouth has a continuously adjoining the planar region elevation, which projects beyond the extension of the flat region down. Due to the continuous transition, the soleplate can easily slide over bumps and obstacles on the floor to be cleaned, especially coarse dirt particles. The elevation forms an integral part of the soleplate and is seamlessly integrated into it.
In einer bevorzugten Ausgestaltung weist die Überhöhung eine Höhe von weniger als 2 mm, insbesondere weniger als 1,5 mm auf. Eine derart geringfügige Aufwallung ist ausreichend, um im Bereich der der Überhöhung benachbarten Saugmundkante eine reinigungswirksame Strömungsbeschleunigung zu erzeugen. Gleichzeitig ist der Überstand klein genug, um ein sicheres Gleiten in Verbindung mit Hindernissen zu ermöglichen. Zweckmäßigerweise beträgt die Höhe der Überhöhung zumindest 0,5 mm, insbesondere zumindest 1 mm.In a preferred embodiment, the elevation has a height of less than 2 mm, in particular less than 1.5 mm. Such slight inflation is sufficient to produce a cleaning-effective flow acceleration in the region of the suction mouth edge adjacent to the elevation. At the same time, the projection is small enough to allow safe sliding in conjunction with obstacles. Advantageously, the height of the elevation is at least 0.5 mm, in particular at least 1 mm.
Vorzugsweise ist vorgesehen, dass die Überhöhung eine Breite von weniger als 3 mm, insbesondere weniger als 2 mm aufweist. Breitere Überhöhungen bilden eine zu große Aufstandsfläche, welche im Fall des Festsaugens eine zusätzliche Abdichtung liefert. Die Breite der Überhöhung ist anhand der Halbwertsbreite des Profils zu bestimmen.It is preferably provided that the elevation has a width of less than 3 mm, in particular less than 2 mm. Wider elevations form too large a footprint, which provides an additional seal in the case of Festsauergens. The width of the elevation is determined by the half width of the profile.
Bevorzugt weist ein Übergangsbereich der Überhöhung zwischen dem ebenen Bereich und der halben Maximalhöhe der Überhöhung eine Breite von weniger als 10 mm auf. Ganz besonders bevorzugt ist der Übergangsbereich schmaler als 5 mm. Die Mindestbreite für den Übergangsbereich beträgt zumindest 1 mm, vorzugsweise zumindest 3 mm. In den angegebenen Parameterbereichen ist ein hinreichend sanfter Übergang von dem ebenen Bereich zur Überhöhung möglich, ohne zu großen Bauraum zu beanspruchen.A transition region of the elevation between the planar region and the half maximum height of the elevation preferably has a width of less than 10 mm. Most preferably, the transition region is narrower than 5 mm. The minimum width for the transition region is at least 1 mm, preferably at least 3 mm. In the specified parameter ranges, a sufficiently gentle transition from the flat region to the superelevation is possible without taking up too much installation space.
In einer bevorzugten Ausgestaltung ist der ebene Bereich als Saugplateau ausgestaltet. Ein Saugplateau ist in Arbeitsstellung, insbesondere wenn die Staubsaugerbodendüse in Kontakt zu der zu reinigenden Bodenfläche ist parallel zu dieser Bodenfläche ausgerichtet. Das Saugplateau weist eine bevorzugte Breite zwischen 3 mm und 15 mm auf und dient insbesondere zur Abstützung der Staubsaugerbodendüse auf luftdurchlässigen Bodenbelägen, wie zum Beispiel Teppichböden. Das Dichtplateau erzeugt eine gewisse Dichtwirkung zwischen der Unterseite der Staubsaugerbodendüse und dem Bodenmaterial, so dass ein beträchtlicher Anteil des Saugluftstromes durch das Bodenmaterial hindurchgeleitet wird. Infolgedessen können Schmutzpartikel mit aufgenommen werden.In a preferred embodiment, the planar area is designed as a suction plateau. A Saugplateau is in working position, in particular when the Staubsaugerbodendüse in contact with the floor surface to be cleaned is aligned parallel to this bottom surface. The suction plateau has a preferred width between 3 mm and 15 mm and serves in particular for supporting the Staubsaugerbodendüse on air-permeable floor coverings, such as carpets. The sealing plateau creates a certain sealing effect between the underside of the vacuum cleaner floor nozzle and the floor material so that a substantial portion of the suction air flow is passed through the floor material. As a result, dirt particles can be included.
Die erfindungsgemäße Überhöhung steht in dieser Konfiguration in das luftdurchlässige und elastische Bodenmaterial vor. Somit wird bei einer Bewegung der Staubsaugerbodendüse über das Bodenmaterial eine variable Komprimierung erzeugt, so dass das Bodenmaterial aufgelockert und die Loslösung des Schmutzes vereinfacht wird. Gleichzeitig erfährt der eintretende Saugluftstrom an dem scharfen Knick eine starke Umlenkung welche ebenfalls für die Schmutzaufnahme positive Verwirbelungen erzeugt.The elevation according to the invention is in this configuration in the air-permeable and elastic soil material. Thus, upon movement of the vacuum cleaner floor nozzle over the floor material, variable compression is created, so loosening the floor material and facilitating the release of the dirt. At the same time, the incoming suction air flow experiences a strong deflection at the sharp bend, which likewise generates positive turbulences for dirt pickup.
In einer alternativen Ausgestaltung ist der ebene Bereich als Gleitschräge ausgebildet. Hierbei kann es sich insbesondere um eine Aufgleitschräge vor der vorderen Saugmundkante oder eine Abgleitschräge hinter der hinteren Saugmundkante handeln. Dabei weist eine Aufgleitschräge bevorzugt eine Breite zwischen 5 mm und 20 mm, eine Abgleitschräge eine bevorzugte Breite zwischen 15 mm und 40 mm auf. Die Gleitschräge ist in jedem Fall gegenüber der Horizontalen bzw. gegenüber der zu reinigenden Bodenfläche - um einen Winkel zwischen 3° und 20°, insbesondere um 5° bis 10° geneigt.In an alternative embodiment, the planar region is designed as a sliding bevel. This may in particular be a slanted slope in front of the front suction mouth edge or a slip slope behind the rear suction mouth edge. In this case, a Aufgleitschräge preferably has a width between 5 mm and 20 mm, a Abgleitschräge a preferred width between 15 mm and 40 mm. The sliding bevel is inclined in each case with respect to the horizontal or with respect to the surface to be cleaned - by an angle between 3 ° and 20 °, in particular by 5 ° to 10 °.
Mit der erfindungsgemäßen Überhöhung weisen sowohl Saugplateaus auch als Gleitschrägen verbesserte Reinigungseigenschaften auf.With the elevation according to the invention, both suction plateaus and slip slopes have improved cleaning properties.
Vorzugsweise ist der ebene Bereich als Aussparung der Gleitsohle ausgebildet. Dabei verlaufen in Querrichtung neben dem ebenen Bereich überstehende Abschnitte der Gleitsohle, welche nach unten weiter vorstehen als der ebene Bereich selbst. Insbesondere kann die Überhöhung an ihrem höchsten Punkt dasselbe Niveau erreichen wie der seitliche überstehende Bereich.Preferably, the planar region is formed as a recess of the sliding sole. In this case, extending in the transverse direction next to the flat area protruding portions of the sole, which project further down than the flat area itself. In particular, the elevation can reach the same level at its highest point as the lateral projecting area.
Besonders bevorzugt ist der Übergang zwischen dem ebenen Bereich und der Überhöhung glatt ausgebildet. Dies bedeutet, dass die Kontur der Überhöhung einer stetig differenzierbaren, vorzugsweise einer 2-fach stetig differenzierbaren Kurve folgt. Kurven dieser Ausgestaltung bilden einen besonders weichen Übergang, welcher zu geringen Schiebewiderständen beim Auftreffen auf Hindernisse führt.Particularly preferably, the transition between the planar region and the elevation is smooth. This means that the contour of the superelevation follows a continuously differentiable, preferably a 2-fold continuously differentiable curve. Curves of this embodiment form a particularly soft transition, which leads to low sliding resistance when hitting obstacles.
Die Kontur der Überhöhung kann zumindest abschnittsweise auch linear ausgebildet sein. Besonders bevorzugt unterschreitet die Kontur der Überhöhung einen Krümmungsradius von 1 mm nicht. Auch große Krümmungsradien in den Übergangsbereichen tragen zu einem besonders sanften Übergang bei.The contour of the elevation may also be linear at least in sections. Particularly preferably, the contour of the elevation does not fall below a radius of curvature of 1 mm. Even large radii of curvature in the transition areas contribute to a particularly smooth transition.
Zweckmäßigerweise ist vorgesehen, dass die Maximalhöhe der Überhöhung ein Abstand zur Berandung des Saugmundes von weniger als 3 mm, insbesondere weniger als 1 mm aufweist. Besonders bevorzugt ist die Überhöhung unmittelbar benachbart zur Saugmundkante angeordnet.Appropriately, it is provided that the maximum height of the elevation has a distance from the boundary of the suction mouth of less than 3 mm, in particular less than 1 mm. Particularly preferably, the elevation is arranged directly adjacent to the suction mouth edge.
In einer alternativen Ausgestaltung ist unmittelbar anschließend an die Berandung des Saugmundes ein Innenplateau mit einer Breite zwischen 1 mm und 3 mm zwischen dem Saugmund und der Überhöhung angeordnet. Das Innenplateau steht nicht über die ebene Fläche über. Vorzugsweise ist es in Arbeitsstellung horizontal ausgerichtet. Zweckmäßigerweise erfolgt der Übergang zwischen der Überhöhung und dem Innenplateau ebenfalls kontinuierlich. Das Innenplateau endet mit der Saugmundkante, welche gleichzeitig die Berandung des Saugmundes bereitstellt. Durch die Überhöhung und die Saugmundkante werden zwei strömungstechnische Widerstände im kurzen Abstand hintereinander geschaltet, was zu einer reinigungstechnisch günstigen Verwirbelung führt.In an alternative embodiment, an inner plateau with a width between 1 mm and 3 mm between the suction mouth and the elevation is arranged immediately adjacent to the boundary of the suction mouth. The inner plateau does not overhang the flat surface. Preferably, it is horizontally aligned in the working position. Conveniently, the transition between the elevation and the inner plateau is also continuous. The inner plateau ends with the suction mouth edge, which simultaneously provides the boundary of the suction mouth. Due to the elevation and the suction mouth edge two fluidic resistances are connected in short distance one behind the other, which leads to a cleaning technology favorable turbulence.
Der Bereich der Überhöhung zwischen dem ersten Punkt vom ebenen Bereich ausgehend, an dem die halbe Maximalhöhe erreicht wird, bis zum letzten Punkt vor der Berandung des Saugmundes an dem die halbe maximale Höhe erreicht wird, wird auch als "Kuppe" der Überhöhung bezeichnet. Der Abschnitt zwischen der Kuppe und dem ebenen Bereich bildet den Übergang zwischen dem ebenen Bereich und der Überhöhung.The range of elevation between the first point, starting from the flat area at which half the maximum height is reached to the last point before the boundary of the suction mouth at which half the maximum height is reached, is also referred to as the "peak" of the elevation. The section between the dome and the flat area forms the transition between the flat area and the elevation.
Bevorzugt nimmt die Steigung der Kontur des Übergangs in Richtung der Saugmundkante monoton, insbesondere streng monoton zu und nimmt im Bereich der Kuppe der Überhöhung monoton, insbesondere streng monoton ab.Preferably, the slope of the contour of the transition in the direction of the suction mouth edge increases monotonously, in particular strictly monotonically, and decreases monotonically, in particular strictly monotonically, in the region of the summit of the elevation.
In einer besonders bevorzugten Ausgestaltung der Erfindung ist die Kuppe der Überhöhung in Form eines Kreisbogensegmentes, insbesondere eines Halbkreises ausgebildet.In a particularly preferred embodiment of the invention, the tip of the elevation in the form of a circular arc segment, in particular a semicircle is formed.
In einer weiteren bevorzugten Ausgestaltung weist die Kuppe der Überhöhung ein Plateau auf. Das Plateau hat dabei zweckmäßigerweise eine Breite zwischen 0,3 mm und 1 mm.In a further preferred embodiment, the summit of the elevation has a plateau. The plateau expediently has a width between 0.3 mm and 1 mm.
Die Erfindung wird nachfolgend anhand von lediglich Ausführungsbeispiele darstellenden Figuren erläutert. Es zeigen schematisch
- Fig. 1
- eine Unteransicht einer erfindungsgemäßen Staubsaugerbodendüse,
- Fig. 2A
- einen teilweisen Schnitt durch die Staubsaugerbodendüse gemäß
Fig. 1 entlang einer Linie A-A gemäß einem ersten Ausführungsbeispiel, - Fig. 2B bis 2F
- eine Schnittdarstellung entsprechend
Fig. 2A bei weiteren Ausführungsformen und - Fig. 3
- eine Unteransicht der Staubsaugerbodendüse gemäß der Schnittdarstellung aus
Fig. 2F .
- Fig. 1
- a bottom view of a Staubsaugerbodendüse invention,
- Fig. 2A
- a partial section through the Staubsaugerbodendüse according to
Fig. 1 along a line AA according to a first embodiment, - Figs. 2B to 2F
- a sectional view accordingly
Fig. 2A in further embodiments and - Fig. 3
- a bottom view of the Staubsaugerbodendüse according to the sectional view
Fig. 2F ,
In der
Die erfindungsgemäße Profilierung der Gleitsohle 2 ist in verschiedenen Ausführungsbeispielen in den
Das in
In dem Ausführungsbeispiel ist hinter dem Saugmund 3 ein ebener Bereich 8 in Form eines horizontal verlaufenden Saugplateaus 9 angeordnet. Rückwärtig schließt an das Plateau 9 eine Abgleitschräge 10 mit einem Neigungswinkel α gegenüber der Horizontalen von etwa 7° an.In the exemplary embodiment, a planar region 8 in the form of a horizontally extending suction plateau 9 is arranged behind the
Erfindungsgemäß ist zwischen dem ebenen Bereich 8, 9 und dem Saugmund 3 eine Überhöhung 11 angeordnet, welche gegenüber einer Verlängerung 12 des ebenen Bereichs 8, 9 um eine maximale Höhe h von weniger als 2 mm nach unten übersteht. Aus Gründen der Deutlichkeit ist die Überhöhung 11 nicht maßstäblich dargestellt, sondern stark überzeichnet. Die Halbwertsbreite b der Überhöhung 11 ist kleiner als 3 mm, während der Übergangsbereich zwischen der Überhöhung 11 und dem ebenen Bereich 8, 9 eine Breite c von weniger als 10 mm aufweist.According to the invention, an
Eine weitere, alternative Ausgestaltung ist in
Bei der Variante gemäß
In der Variante gemäß
Bei der Ausführungsform gemäß
Eine weitere Variante ist in
Claims (15)
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EP17203366.4A EP3488752B1 (en) | 2017-11-23 | 2017-11-23 | Floor nozzle for a vacuum cleaner |
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EP17203366.4A EP3488752B1 (en) | 2017-11-23 | 2017-11-23 | Floor nozzle for a vacuum cleaner |
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EP3488752B1 EP3488752B1 (en) | 2021-12-29 |
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EP1964501A2 (en) * | 2007-03-01 | 2008-09-03 | Wessel-Werk Gmbh | Sheet metal sliding base plate for vacuum cleaner nozzle |
EP2989953A1 (en) * | 2014-08-25 | 2016-03-02 | Wessel-Werk GmbH | Use of a suction nozzle which can be connected to a vacuum cleaner for suction of a textile floor surface, a tiled hard floor surface and a smooth unjoined hard floor surface |
EP2989952A2 (en) * | 2014-08-29 | 2016-03-02 | Samsung Electronics Co., Ltd. | Suction nozzle and vacuum cleaner having the same |
CN104367268B (en) | 2013-08-13 | 2017-06-16 | 莱克电气股份有限公司 | Modified floor brush of dust collector |
EP3181029A1 (en) * | 2015-12-18 | 2017-06-21 | Conta S.R.O | Vacuum cleaner nozzle |
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2017
- 2017-11-23 EP EP17203366.4A patent/EP3488752B1/en active Active
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FR2871046A1 (en) | 2004-06-08 | 2005-12-09 | Seb Sa | Suction nozzle for low power upright vacuum cleaner, has suction passage delimited by front wall and rear wall such that front wall forms arc of circle symmetric with respect to middle of passage |
EP1964501A2 (en) * | 2007-03-01 | 2008-09-03 | Wessel-Werk Gmbh | Sheet metal sliding base plate for vacuum cleaner nozzle |
CN104367268B (en) | 2013-08-13 | 2017-06-16 | 莱克电气股份有限公司 | Modified floor brush of dust collector |
EP2989953A1 (en) * | 2014-08-25 | 2016-03-02 | Wessel-Werk GmbH | Use of a suction nozzle which can be connected to a vacuum cleaner for suction of a textile floor surface, a tiled hard floor surface and a smooth unjoined hard floor surface |
EP2989952A2 (en) * | 2014-08-29 | 2016-03-02 | Samsung Electronics Co., Ltd. | Suction nozzle and vacuum cleaner having the same |
EP3181029A1 (en) * | 2015-12-18 | 2017-06-21 | Conta S.R.O | Vacuum cleaner nozzle |
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