EP0898923B1 - Suction nozzle for vacuum cleaner - Google Patents

Suction nozzle for vacuum cleaner Download PDF

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Publication number
EP0898923B1
EP0898923B1 EP98109393A EP98109393A EP0898923B1 EP 0898923 B1 EP0898923 B1 EP 0898923B1 EP 98109393 A EP98109393 A EP 98109393A EP 98109393 A EP98109393 A EP 98109393A EP 0898923 B1 EP0898923 B1 EP 0898923B1
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EP
European Patent Office
Prior art keywords
suction
vacuum cleaner
width
air channel
orifice
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EP98109393A
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German (de)
French (fr)
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EP0898923A1 (en
Inventor
Dieter Kaffenberger
Hans-Joachim Steudtner
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Wessel Werk GmbH
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Wessel Werk GmbH
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    • 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 suction space delimited by the edges of the suction mouth consists of one or two flow channels.
  • the flow channels are incorporated into the sliding sole made of metal or plastic.
  • the volume of the vacuum cleaner nozzles for household vacuum cleaners varies between 25 and 60 cm 3 .
  • Such a vacuum cleaner nozzle is described for example in EP-A-0 125 994.
  • the noise generated by the inflowing air is remarkable in the known designs.
  • the suction chamber is not part of the sliding sole, but is made up of several interlocking molded parts formed on the sliding sole as well as on the nozzle housing molded or connected.
  • the suction chamber points in A larger one compared to the former types Volume, in conjunction with a larger one Distance of the suction mouth edges from each other.
  • a great distance between the suction mouth edges is however functional Disadvantages connected because when operating the vacuum cleaner nozzle due to the negative pressure prevailing in the suction chamber Ground-directed force acts on the nozzle housing, which the Area of the suction mouth is proportional. With increasing The distance between the suction mouth edges increases the pushing force, the for moving the vacuum cleaner nozzle in the working direction must be applied.
  • the vacuum cleaner nozzles that come with are equipped with a large suction mouth, therefore point in the Usually additional support rollers in the area of the suction mouth on. It is expensive. These are also with these nozzles Noise caused by incoming air is still annoying.
  • the suction space is generally the rule significantly larger because it has to take up the brush roller.
  • the distance between the suction mouth edges is also larger and lies with the designs known from practice between 24 and 32 mm.
  • the invention has for its object a static Specify vacuum cleaner nozzle of the construction described at the beginning, whose suction chamber is designed in such a way that it does not impair the suction properties the pushing force to Moving the vacuum cleaner nozzle and flow noise through inflowing air are as small as possible.
  • the invention teaches that Suction chamber to reduce flow noise in the Suction operation on the air flowing in as large volume dimensioned flow contact space one in the working direction measured channel width, which is greater than the width of the measured between the suction mouth edges Suction mouth.
  • the channel width of the suction chamber should be at least 1.3 times that between the suction mouth edges measured width of the suction mouth.
  • the invention is based on the knowledge that a clear Reduction of flow noise can be achieved can, if the suction space as a flow calming space large dimensioned volume is formed.
  • the noise reduction rests on the entire length the suction chamber sets an even suction vacuum, the air flows in evenly and noise-increasing speed peaks can be avoided.
  • the suction space which is much larger than the area of the suction mouth, the average air speed is reduced. The result is a significant reduction in noise with constant suction power.
  • the invention is also based on the knowledge that the distance of the Suction mouth edges do not have the practical experience with static Nozzles of known size may be enlarged because of a Enlargement of the suction mouth area with those already described functional disadvantages.
  • the sliding sole is as Molding with a bottom surface, suction mouth edges and to the Formed on the top of the base surface molded collar, the collar on a hood-shaped, connecting end of the Suction air duct is in contact
  • the hood-shaped connection end extends the measured across the working direction Width of the sliding sole.
  • the preferably made of plastic existing sliding sole has the suction mouth edges and forms the lower part of the suction chamber. Up is the Suction chamber through another component, namely the hood-shaped Connection end of the suction air duct formed.
  • the upper Part can be an integral part of the nozzle housing or also be designed as a separate component.
  • the invention teaches that The sliding sole is pivotally mounted in the nozzle housing and that the collar has arc-shaped fitting surfaces, which slidably on seating surfaces of the hood-shaped Connect the end of the suction air duct.
  • the Swivel angle is preferably approximately ⁇ 3 °.
  • the tilting movement of the suction mouth improves the suction properties at. In particular, the dust pickup better, while also reducing the pushing force.
  • the Suction air duct is expediently designed in two parts and consists of an upper half of the housing and a lower half Half of the housing, with the lower half of the housing hood-shaped connection end is formed.
  • the Suction chamber consists of a hollow profile, which between the Sliding sole and the inlet of the suction air duct arranged is and on its underside one adapted to the suction mouth Air inlet slot and one on top Has connection opening for the suction air duct.
  • the vacuum cleaner nozzle shown in the figures works without brush roller.
  • the basic structure includes Nozzle housing 1, a suction air duct arranged in the nozzle housing 1 2 and one connected to the nozzle housing 1 Sliding sole 3. Furthermore, the vacuum cleaner nozzle in on known manner support rollers at the rear end of the Nozzle housing, retractable and extendable bristle strips and / or have a wiper lip for vacuuming smooth floors.
  • the sliding sole 3 has a suction mouth 4, which of a in the working direction of the front suction mouth edge 5 and one is limited in the working direction rear suction mouth edge 5 '.
  • the suction air duct 2 opens into a suction chamber 6, which in the Cross-section is shown and is transverse to the working direction essentially across the width of the sliding sole 3 extends and ends at the bottom with the suction mouth 4.
  • the figures show that they are in the working direction measured channel width B of the suction chamber 6 is greater than that between the suction mouth edges 5, 5 'measured width a des Suction mouth 4.
  • the ratio between the channel width B of the Suction chamber 6 and the width a of the suction mouth 4 should be at least 1.3 amount, with 1.5 and 2.5 being preferred.
  • the one at the Suction mouth 4 adjacent suction chamber 6 is used as a flow calming chamber large-sized and funnel-shaped into the suction air duct 2.
  • the vacuum cleaner nozzle according to the invention is characterized by good suction properties based on the fact that a uniform over the entire length of the suction chamber 6 Vacuum sets the air evenly over the entire Length of the suction mouth 4 flows and the air speed within the suction chamber 6 by the corresponding large dimensioned suction chamber cross section is small. There are flow noises caused by incoming air largely eliminated. Due to the compliance with the invention narrow suction mouth 4 is the force with which the Sliding sole 3 is pressed against the floor to be cleaned, relatively small, and the pushing force with which the Vacuum cleaner nozzle is movable in the working direction, remains in an acceptable order of magnitude.
  • Fig. 1 is the Sliding sole 3 as a molded part with a bottom surface, suction mouth edges 5, 5 'and molded onto the top of the bottom surface Collar 7 formed.
  • the collar 7 is against one hood-shaped connection end 8 of the suction air duct 2.
  • the Suction air duct 2 is part of the nozzle housing 1.
  • the nozzle housing 1 consists of an upper one Housing half 9 and a lower housing half 9 ', wherein to the lower housing half 9 'the hood-shaped connection end 8 is molded. 1 shows that the Sliding sole 3 can be pivoted, e.g. by a tilt angle of ⁇ 3 °, is stored in the nozzle housing 1.
  • the collar 7 has arcuate curved mating surfaces on the sliding Seating surfaces of the hood-shaped connection end 8 of the suction air duct 2 concerns.
  • Suction chamber 6 from a hollow profile 10, which between the Sliding sole 3 and the inlet of the suction air duct 2 is arranged and on its underside one to the Suction mouth 4 adapted air inlet slot and at his Top side a connection opening for the suction air duct 2 having.

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

Description

Die Erfindung betrifft eine statische Staubsaugerdüse, insbesondere für Haushaltsstaubsauger, mit

  • einem Düsengehäuse, in dem ein- und ausfahrbare Borstenleisten und ein Sauglauftkanal angeordnet sind, und
  • einer an das Düsengehäuse angeschlossenen Gleitsohle mit einem Saugmund, der von einer in Arbeitsrichtung vorderen Saugmundkante sowie einer hinteren Saugmundkante begrenzt ist und sich quer zur Arbeitsrichtung im Wesentlichen über die Breite der Gleitsohle erstreckt,
    • wobei der Saugluftkanal in einen Saugraum einmündet, der sich quer zur Arbeitsrichtung im Wesentlichen über die Breite der Gleitsohle erstreckt und bodenseitig mit dem Saugmund abschließt. Statische Staubsaugerdüsen bezeichnen Staubsaugerdüsen ohne Bürstenwalze.The invention relates to a static vacuum cleaner nozzle, in particular for household vacuum cleaners
  • a nozzle housing in which retractable and extendable bristle strips and a suction air duct are arranged, and
  • a sliding sole connected to the nozzle housing with a suction mouth which is delimited by a front suction mouth edge in the working direction and a rear suction mouth edge and which extends transversely to the working direction essentially over the width of the sliding sole,
    • wherein the suction air duct opens into a suction space, which extends transversely to the working direction essentially over the width of the sliding sole and ends at the bottom with the suction mouth. Static vacuum cleaner nozzles refer to vacuum cleaner nozzles without a brush roller.

    Bei den aus der Praxis bekannten Staubsaugerdüsen, von denen die Erfindung ausgeht, besteht der von den Saugmundkanten begrenzte Saugraum aus einem oder zwei Strömungskanälen. Die Strömungskanäle sind in die aus Metall oder Kunststoff bestehende Gleitsohle eingearbeitet. Ihr Volumen variiert bei den Staubsaugerdüsen für Haushaltsstabsauger zwischen 25 und 60 cm3. Eine solche Staubsaugerdüse ist beispielsweise in EP-A-0 125 994 beschrieben. Die Geräuschentwicklung durch einströmende Luft ist bei den bekannten Ausführungen beachtlich.In the vacuum cleaner nozzles known from practice, from which the invention is based, the suction space delimited by the edges of the suction mouth consists of one or two flow channels. The flow channels are incorporated into the sliding sole made of metal or plastic. The volume of the vacuum cleaner nozzles for household vacuum cleaners varies between 25 and 60 cm 3 . Such a vacuum cleaner nozzle is described for example in EP-A-0 125 994. The noise generated by the inflowing air is remarkable in the known designs.

    Bei einer anderen, ebenfalls aus der Praxis bekannten Bauform ist der Saugraum nicht Bestandteil der Gleitsohle, sondern wird durch mehrere ineinandergreifende Formteile gebildet, die an der Gleitsohle sowie an dem Düsengehäuse angeformt oder angeschlossen sind. Der Saugraum weist im Vergleich zu den erstgenannten Bauformen ein größeres Volumen auf, und zwar in Verbindung mit einem größeren Abstand der Saugmundkanten voneinander. Ein großer Abstand zwischen den Saugmundkanten ist jedoch mit funktionsmäßigen Nachteilen verbunden, weil beim Betrieb der Staubsaugerdüse aufgrund des im Saugraum herrschenden Unterdrucks eine zum Boden gerichtete Kraft auf das Düsengehäuse wirkt, die der Fläche des Saugmundes proportional ist. Mit zunehmendem Abstand zwischen den Saugmundkanten wächst die Schiebekraft, die zum Bewegen der Staubsaugerdüse in Arbeitsrichtung aufgebracht werden muss. Die Staubsaugerdüsen, die mit einem großen Saugmund ausgerüstet sind, weisen daher in der Regel zusätzliche Stützrollen im Bereich des Saugmundes auf. Das ist aufwendig. Auch bei diesen Düsen sind die Geräusche durch einströmende Luft noch störend.Another, also known from practice The suction chamber is not part of the sliding sole, but is made up of several interlocking molded parts formed on the sliding sole as well as on the nozzle housing molded or connected. The suction chamber points in A larger one compared to the former types Volume, in conjunction with a larger one Distance of the suction mouth edges from each other. A great distance between the suction mouth edges is however functional Disadvantages connected because when operating the vacuum cleaner nozzle due to the negative pressure prevailing in the suction chamber Ground-directed force acts on the nozzle housing, which the Area of the suction mouth is proportional. With increasing The distance between the suction mouth edges increases the pushing force, the for moving the vacuum cleaner nozzle in the working direction must be applied. The vacuum cleaner nozzles that come with are equipped with a large suction mouth, therefore point in the Usually additional support rollers in the area of the suction mouth on. It is expensive. These are also with these nozzles Noise caused by incoming air is still annoying.

    Bei statischen Staubsaugerdüsen sind die an die Saugmundkanten anschließende vordere und hintere Wand des Saugraumes im wesentlichen senkrecht ausgerichtet und weisen lediglich fertigungsbedingte Entformungsschrägen und Radien auf. Dem Volumen des Saugraumes wird keine besondere Bedeutung beigemessen. Das Volumen richtet sich nach dem Abstand der Saugmundkanten, also der Fläche des Saugmundes. With static vacuum cleaner nozzles, they are on the edges of the suction mouth subsequent front and rear wall of the suction chamber aligned essentially vertically and point only production-related draft angles and radii on. The volume of the suction chamber is not special Attached importance. The volume depends on the Distance of the suction mouth edges, i.e. the surface of the suction mouth.

    Bei Bürstenvorsatzgeräten ist der Saugraum in aller Regel deutlich größer, da er die Bürstenwalze aufnehmen muss. Der Abstand zwischen den Saugmundkanten ist ebenfalls größer und liegt bei den aus der Praxis bekannten Ausführungen zwischen 24 und 32 mm.In the case of brush attachments, the suction space is generally the rule significantly larger because it has to take up the brush roller. The The distance between the suction mouth edges is also larger and lies with the designs known from practice between 24 and 32 mm.

    Der Erfindung liegt die Aufgabe zugrunde, eine statische Staubsaugerdüse des eingangs beschriebenen Aufbaus anzugeben, deren Saugraum so gestaltet ist, dass ohne Beeinträchtigung der Saugeigenschaften die Schiebekraft zum Bewegen der Staubsaugerdüse sowie Strömungsgeräusche durch einströmende Luft möglichst klein sind.The invention has for its object a static Specify vacuum cleaner nozzle of the construction described at the beginning, whose suction chamber is designed in such a way that it does not impair the suction properties the pushing force to Moving the vacuum cleaner nozzle and flow noise through inflowing air are as small as possible.

    Zur Lösung dieser Aufgabe lehrt die Erfindung, dass der Saugraum zur Reduzierung von Strömungsgeräuschen der im Saugbetrieb am Saugmund einströmenden Luft als großvolumig dimensionierter Strömungsberührungsraum eine in Arbeitsrichtung gemessene Kanalbreite aufweist, die größer ist als die zwischen den Saugmundkanten gemessene Breite des Saugmundes. Die Kanalbreite des Saugraumes sollte mindestens das 1,3-fache der zwischen den Saugmundkanten gemessenen Breite des Saugmundes betragen.To achieve this object, the invention teaches that Suction chamber to reduce flow noise in the Suction operation on the air flowing in as large volume dimensioned flow contact space one in the working direction measured channel width, which is greater than the width of the measured between the suction mouth edges Suction mouth. The channel width of the suction chamber should be at least 1.3 times that between the suction mouth edges measured width of the suction mouth.

    Die Erfindung beruht auf der Erkenntnis, dass eine deutliche Reduzierung der Strömungsgeräusche erreicht werden kann, wenn der Saugraum als Strömungsberuhigungsraum mit groß dimensioniertem Volumen ausgebildet ist. Die Geräuschreduzierung beruht darauf, dass sich über die gesamte Länge des Saugraumes ein gleichmäßiger Saugunterdruck einstellt, die Luft in gleichmäßiger Verteilung einströmt und geräuscherhöhende Geschwindigkeitsspitzen vermieden werden. Auch wird durch einen ausreichend bemessenen Querschnitt des Saugraumes, der wesentlich größer ist als die Fläche des Saugmundes, die Durchschnittsluftgeschwindigkeit gesenkt. Im Ergebnis ergibt sich eine deutliche Geräuschreduzierung bei gleichbleibender Saugleistung. Die Erfindung beruht ferner auf der Erkenntnis, dass der Abstand der Saugmundkanten nicht über das aus der Praxis bei statischen Düsen bekannte Maß hinaus vergrößert werden darf, da eine Vergrößerung der Saugmundfläche mit den bereits beschriebenen funktionsmäßigen Nachteilen einhergeht. The invention is based on the knowledge that a clear Reduction of flow noise can be achieved can, if the suction space as a flow calming space large dimensioned volume is formed. The noise reduction rests on the entire length the suction chamber sets an even suction vacuum, the air flows in evenly and noise-increasing speed peaks can be avoided. Also by a sufficiently dimensioned cross section the suction space, which is much larger than the area of the suction mouth, the average air speed is reduced. The result is a significant reduction in noise with constant suction power. The invention is also based on the knowledge that the distance of the Suction mouth edges do not have the practical experience with static Nozzles of known size may be enlarged because of a Enlargement of the suction mouth area with those already described functional disadvantages.

    Für die weitere konstruktive Ausgestaltung der erfindungsgemäßen Lehre bieten sich verschiedene Möglichkeiten an. Gemäß einer ersten Ausführungsform ist die Gleitsohle als Formteil mit einer Bodenfläche, Saugmundkanten und an die Oberseite der Bodenfläche angeformtem Kragen ausgebildet, wobei der Kragen an einem haubenförmigen, Anschlußende des Saugluftkanals anliegt Das haubenförmige Anschlußende erstreckt sich über die quer zur Arbeitsrichtung gemessene Breite der Gleitsohle. Die vorzugsweise aus Kunststoff bestehende Gleitsohle weist die Saugmundkanten auf und bildet den unteren Teil des Saugraumes. Nach oben ist der Saugraum durch ein weiteres Bauteil, nämlich das haubenförmige Anschlußende des Saugluftkanals gebildet. Der obere Teil kann fester Bestandteil des Düsengehäuses oder auch als separates Bauteil ausgebildet sein.For the further design of the invention Teaching offers various options. According to a first embodiment, the sliding sole is as Molding with a bottom surface, suction mouth edges and to the Formed on the top of the base surface molded collar, the collar on a hood-shaped, connecting end of the Suction air duct is in contact The hood-shaped connection end extends the measured across the working direction Width of the sliding sole. The preferably made of plastic existing sliding sole has the suction mouth edges and forms the lower part of the suction chamber. Up is the Suction chamber through another component, namely the hood-shaped Connection end of the suction air duct formed. The upper Part can be an integral part of the nozzle housing or also be designed as a separate component.

    In weiterer Ausgestaltung lehrt die Erfindung, daß die Gleitsohle schwenkbeweglich im Düsengehäuse gelagert ist und daß der Kragen bogenförmig gekrümmte Paßflächen aufweist, die gleitbeweglich an Sitzflächen des haubenförmigen Anschlußendes des Saugluftkanals anliegen. Der Schwenkwinkel beträgt vorzugsweise ca. ±3°. Die Kippbewegung des Saugmundes trägt zu einer Verbesserung der Saugeigenschaften bei. Insbesondere wird die Staubaufnahme besser, wobei außerdem die Schiebekraft abnimmt. Der Saugluftkanal ist zweckmäßig zweiteilig ausgeführt und besteht aus einer oberen Gehäusehälfte und einer unteren Gehäusehälfte, wobei an die untere Gehäusehälfte das haubenförmig ausgebildete Anschlußende angeformt ist. In a further embodiment, the invention teaches that The sliding sole is pivotally mounted in the nozzle housing and that the collar has arc-shaped fitting surfaces, which slidably on seating surfaces of the hood-shaped Connect the end of the suction air duct. The Swivel angle is preferably approximately ± 3 °. The tilting movement of the suction mouth improves the suction properties at. In particular, the dust pickup better, while also reducing the pushing force. The Suction air duct is expediently designed in two parts and consists of an upper half of the housing and a lower half Half of the housing, with the lower half of the housing hood-shaped connection end is formed.

    Eine andere Ausführung der Erfindung sieht vor, daß der Saugraum aus einem Hohlprofil besteht, welches zwischen der Gleitsohle und dem Eintritt des Saugluftkanals angeordnet ist und an seiner Unterseite einen an den Saugmund angepaßten Lufteintrittsschlitz sowie an seiner Oberseite eine Anschlußöffnung für den Saugluftkanal aufweist.Another embodiment of the invention provides that the Suction chamber consists of a hollow profile, which between the Sliding sole and the inlet of the suction air duct arranged is and on its underside one adapted to the suction mouth Air inlet slot and one on top Has connection opening for the suction air duct.

    Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlich erläutert. Es zeigen in schematischer Darstellung:

    Fig. 1
    den Längsschnitt durch eine Staubsaugerdüse für einen Haushaltsstaubsauger,
    Fig. 2
    eine weitere Ausführung der Staubsaugerdüse, ebenfalls im Längsschnitt.
    In the following, the invention is explained in detail with reference to a drawing that shows only one exemplary embodiment. In a schematic representation:
    Fig. 1
    the longitudinal section through a vacuum cleaner nozzle for a household vacuum cleaner,
    Fig. 2
    another version of the vacuum cleaner nozzle, also in longitudinal section.

    Die in den Figuren dargestellte Staubsaugerdüse arbeitet ohne Bürstenwalze. Zum grundsätzlichen Aufbau gehören ein Düsengehäuse 1, ein im Düsengehäuse 1 angeordneter Saugluftkanal 2 sowie eine an das Düsengehäuse 1 angeschlossene Gleitsohle 3. Ferner kann die Staubsaugerdüse in an sich bekannter Weise Stützrollen am rückwärtigen Ende des Düsengehäuses, ein- und ausfahrbare Borstenleisten und/oder eine Abstreiferlippe zum Saugen von Glattböden aufweisen.The vacuum cleaner nozzle shown in the figures works without brush roller. The basic structure includes Nozzle housing 1, a suction air duct arranged in the nozzle housing 1 2 and one connected to the nozzle housing 1 Sliding sole 3. Furthermore, the vacuum cleaner nozzle in on known manner support rollers at the rear end of the Nozzle housing, retractable and extendable bristle strips and / or have a wiper lip for vacuuming smooth floors.

    Die Gleitsohle 3 weist einen Saugmund 4 auf, der von einer in Arbeitsrichtung vorderen Saugmundkante 5 sowie von einer in Arbeitsrichtung hinteren Saugmundkante 5' begrenzt ist. Der Saugluftkanal 2 mündet in einen Saugraum 6 ein, der im Querschnitt dargestellt ist und sich quer zur Arbeitsrichtung im wesentlichen über die Breite der Gleitsohle 3 erstreckt und bodenseitig mit dem Saugmund 4 abschließt. Den Figuren entnimmt man, daß die in Arbeitsrichtung gemessene Kanalbreite B des Saugraumes 6 größer ist als die zwischen den Saugmundkanten 5, 5' gemessene Breite a des Saugmundes 4. Das Verhältnis zwischen der Kanalbreite B des Saugraumes 6 und der Breite a des Saugmundes 4 (gemessen zwischen den Saugmundkanten 5, 5') sollte mindestens 1,3 betragen, wobei 1,5 und 2,5 bevorzugt ist. Der an den Saugmund 4 angrenzende Saugraum 6 ist als Strömungsberuhigungsraum großvolumig dimensioniert und geht trichterförmig in den Saugluftkanal 2 über.The sliding sole 3 has a suction mouth 4, which of a in the working direction of the front suction mouth edge 5 and one is limited in the working direction rear suction mouth edge 5 '. The suction air duct 2 opens into a suction chamber 6, which in the Cross-section is shown and is transverse to the working direction essentially across the width of the sliding sole 3 extends and ends at the bottom with the suction mouth 4. The figures show that they are in the working direction measured channel width B of the suction chamber 6 is greater than that between the suction mouth edges 5, 5 'measured width a des Suction mouth 4. The ratio between the channel width B of the Suction chamber 6 and the width a of the suction mouth 4 (measured between the suction mouth edges 5, 5 ') should be at least 1.3 amount, with 1.5 and 2.5 being preferred. The one at the Suction mouth 4 adjacent suction chamber 6 is used as a flow calming chamber large-sized and funnel-shaped into the suction air duct 2.

    Die erfindungsgemäße Staubsaugerdüse zeichnet sich durch gute Saugeigenschaften aus, die darauf beruhen, daß sich über die gesamte Länge des Saugraumes 6 ein gleichmäßiger Unterdruck einstellt, die Luft gleichmäßig über die gesamte Länge des Saugmundes 4 einströmt und die Luftgeschwindigkeit innerhalb des Saugraumes 6 durch den entsprechend groß dimensionierten Saugraumquerschnitt verhältnismäßig klein ist. Strömungsgeräusche durch einströmende Luft sind weitgehend eliminiert. Durch den erfindungsgemäß eingehaltenen schmalen Saugmund 4 ist die Kraft, mit der die Gleitsohle 3 gegen den zu reinigenden Boden gedrückt wird, verhältnismäßig klein, und die Schiebekraft, mit der die Staubsaugerdüse in Arbeitsrichtung bewegbar ist, bleibt in einer akzeptablen Größenordnung.The vacuum cleaner nozzle according to the invention is characterized by good suction properties based on the fact that a uniform over the entire length of the suction chamber 6 Vacuum sets the air evenly over the entire Length of the suction mouth 4 flows and the air speed within the suction chamber 6 by the corresponding large dimensioned suction chamber cross section is small. There are flow noises caused by incoming air largely eliminated. Due to the compliance with the invention narrow suction mouth 4 is the force with which the Sliding sole 3 is pressed against the floor to be cleaned, relatively small, and the pushing force with which the Vacuum cleaner nozzle is movable in the working direction, remains in an acceptable order of magnitude.

    Bei der in Fig. 1 dargestellten Ausführung ist die Gleitsohle 3 als Formteil mit einer Bodenfläche, Saugmundkanten 5, 5' und an die Oberseite der Bodenfläche angeformtem Kragen 7 ausgebildet. Der Kragen 7 liegt an einem haubenförmigen Anschlußende 8 des Saugluftkanals 2 an. Der Saugluftkanal 2 ist Teil des Düsengehäuses 1. Im Ausführungsbeispiel besteht das Düsengehäuse 1 aus einer oberen Gehäusehälfte 9 und einer unteren Gehäusehälfte 9', wobei an die untere Gehäusehälfte 9' das haubenförmige Anschlußende 8 angeformt ist. Der Fig. 1 entnimmt man, daß die Gleitsohle 3 schwenkbeweglich, z.B. um einen Kippwinkel von ±3°, im Düsengehäuse 1 gelagert ist. Der Kragen 7 weist bogenförmig gekrümmte Paßflächen auf, die gleitbeweglich an Sitzflächen des haubenförmigen Anschlußendes 8 des Saugluftkanals 2 anliegen.In the embodiment shown in Fig. 1 is the Sliding sole 3 as a molded part with a bottom surface, suction mouth edges 5, 5 'and molded onto the top of the bottom surface Collar 7 formed. The collar 7 is against one hood-shaped connection end 8 of the suction air duct 2. The Suction air duct 2 is part of the nozzle housing 1. In the exemplary embodiment the nozzle housing 1 consists of an upper one Housing half 9 and a lower housing half 9 ', wherein to the lower housing half 9 'the hood-shaped connection end 8 is molded. 1 shows that the Sliding sole 3 can be pivoted, e.g. by a tilt angle of ± 3 °, is stored in the nozzle housing 1. The collar 7 has arcuate curved mating surfaces on the sliding Seating surfaces of the hood-shaped connection end 8 of the suction air duct 2 concerns.

    Bei der in Fig. 2 dargestellten Ausführung besteht der Saugraum 6 aus einem Hohlprofil 10, welches zwischen der Gleitsohle 3 und dem Eintritt des Saugluftkanals 2 angeordnet ist und an seiner Unterseite einen an den Saugmund 4 angepaßten Lufteintrittsschlitz sowie an seiner Oberseite eine Anschlußöffnung für den Saugluftkanal 2 aufweist.In the embodiment shown in Fig. 2 there is Suction chamber 6 from a hollow profile 10, which between the Sliding sole 3 and the inlet of the suction air duct 2 is arranged and on its underside one to the Suction mouth 4 adapted air inlet slot and at his Top side a connection opening for the suction air duct 2 having.

    Claims (6)

    1. A vacuum cleaner nozzle without brush roll, in particular, for household vacuum cleaners, with
      a nozzle housing (1), in which retractable and extendable bristle strips and a suction air channel (2) are arranged, and with
      a sliding base (3) that is connected to the nozzle housing (1) and contains a suction orifice (4) that is limited by a front suction orifice edge (5) and a rear suction orifice edge (5') referred to the working direction and essentially extends over the width of the sliding base (3) transverse to the working direction,
      wherein the suction air channel (2) leads into a suction chamber (6) that essentially extends over the width of the sliding base (3) transverse to the working direction, and wherein the suction orifice (4) forms the end of the suction chamber on the floor side, characterized in that the suction chamber (6) is realized in the form of a large-volume flow contact chamber in order to reduce flow noises caused by the air flowing into the suction orifice (4) in the cleaning mode, wherein the channel width (B) of the suction chamber measured in the working direction is greater than the width a of the suction orifice (4) measured between the suction orifice edges (5, 5').
    2. The vacuum cleaner nozzle according to Claim 1, characterized in that the channel width (B) of the suction chamber (6) amounts to at least 1.3-times the width (a) of the suction orifice (4) measured between the suction orifice edges (5, 5').
    3. The vacuum cleaner nozzle according to Claim 1 or 2, characterized in that the sliding base (3) is realized in the form of a moulded part with a bottom surface, suction orifice edges (5, 5') and a collar (7) that is integrally formed onto the upper side of the bottom surface, and in that the collar (7) adjoins a hood-shaped connection end (8) of the suction air channel (2) .
    4. The vacuum cleaner nozzle according to Claim 3, characterized in that the sliding base (3) is supported in the nozzle housing (1) in a pivoted fashion, and in that the collar (7) contains fitting surfaces that are curved in the shape of an arc and adjoin seats of the hood-shaped connection end (8) of the suction air channel (2).
    5. The vacuum cleaner nozzle according to Claim 3 or 4, characterized in that the suction air channel (2) consists of an upper housing half (9) and a lower housing half (9'), wherein the hood-shaped connection end (8) is integrally formed onto the lower housing half (9').
    6. The vacuum cleaner nozzle according to Claim 1 or 2, characterized in that the suction chamber (6) consists of a hollow prof ile (10) that is arranged between the sliding base (3) and the inlet of the suction air channel (2), wherein the hollow profile contains an air inlet slot that is adapted to the suction orifice (4) on its underside and a connection opening for the suction air channel (2) on its upper side.
    EP98109393A 1997-08-30 1998-05-23 Suction nozzle for vacuum cleaner Expired - Lifetime EP0898923B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19738046A DE19738046A1 (en) 1997-08-30 1997-08-30 Static vacuum cleaner nozzle, especially for household vacuum cleaners
    DE19738046 1997-08-30

    Publications (2)

    Publication Number Publication Date
    EP0898923A1 EP0898923A1 (en) 1999-03-03
    EP0898923B1 true EP0898923B1 (en) 2003-10-15

    Family

    ID=7840777

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98109393A Expired - Lifetime EP0898923B1 (en) 1997-08-30 1998-05-23 Suction nozzle for vacuum cleaner

    Country Status (2)

    Country Link
    EP (1) EP0898923B1 (en)
    DE (2) DE19738046A1 (en)

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    EP3366179A1 (en) 2017-02-23 2018-08-29 Wessel-Werk GmbH Static floor nozzle for a vacuum cleaner

    Also Published As

    Publication number Publication date
    DE59809910D1 (en) 2003-11-20
    EP0898923A1 (en) 1999-03-03
    DE19738046A1 (en) 1999-03-11

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