EP1559359B1 - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
EP1559359B1
EP1559359B1 EP05001761A EP05001761A EP1559359B1 EP 1559359 B1 EP1559359 B1 EP 1559359B1 EP 05001761 A EP05001761 A EP 05001761A EP 05001761 A EP05001761 A EP 05001761A EP 1559359 B1 EP1559359 B1 EP 1559359B1
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EP
European Patent Office
Prior art keywords
vacuum cleaner
accordance
wall
suction
suction unit
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EP05001761A
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German (de)
French (fr)
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EP1559359A2 (en
EP1559359A3 (en
Inventor
Jürgen FRANK
Rainer Engelhardt
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Alfred Kaercher SE and Co KG
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Alfred Kaercher SE and Co KG
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Priority to PL05001761T priority Critical patent/PL1559359T3/en
Publication of EP1559359A2 publication Critical patent/EP1559359A2/en
Publication of EP1559359A3 publication Critical patent/EP1559359A3/en
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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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • 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

Definitions

  • the invention relates to a vacuum cleaner with a vacuum cleaner housing, which comprises a lower part and an attachable to this upper part, wherein the lower part forms a dirt collector and the upper part receives an electric suction unit with an electric motor and a suction turbine, wherein the suction unit in the circumferential direction of two semi-annular outlet channels surrounded is, which open into a common outlet opening for discharging the suction sucked by the suction unit, and wherein an operating element for switching on and off of the electric motor is arranged laterally on the upper part.
  • Such a vacuum cleaner is from the EP 0 099 466 B2 known. To achieve improved sound insulation is provided in this vacuum cleaner, that the suctioned air from the suction unit is alternately accelerated and slowed several times and is additionally deflected several times at sharp edges. However, it is desirable to further reduce the noise level associated with operation of the vacuum cleaner.
  • US 4,655,694 discloses a vacuum cleaner according to the preamble of claim 1.
  • Object of the present invention is therefore to develop a vacuum cleaner of the type mentioned in such a way that it allows the lowest possible suction operation.
  • control element and the outlet opening are diametrically opposed to each other and record between them the suction unit and the two outlet channels.
  • a vacuum cleaner can be provided, which is characterized despite a relatively small volume by a high suction capacity and low noise.
  • suction turbine and the electric motor prefferably be arranged axially one behind the other so as to define a central axis of the upper part.
  • the suction air starting from the suction turbine, flows through the electric motor and is then guided on the outside in the direction of the suction turbine facing the electric motor.
  • the suction air serves as a working air, with the aid of which dirt can be transferred into the dirt collecting container, and on the other hand, the suction air serves as cooling air for cooling the electric motor.
  • Both the working air and the cooling air are led together via the outlet channels to the single outlet opening of the vacuum cleaner.
  • the working air and the cooling air need not be separated from each other by partitions and consequently can be selected for the outlet channels a relatively large flow cross-section, which in turn keeps the noise level low, since the flow rate of the suction air can be kept low.
  • a flow baffle is arranged, wherein by means of the Strömungsleitwand caused by the suction suction air flow can be divided into two flow components, which are each an outlet channel can be fed.
  • the operating element such as an electromechanical switch or an electrical plug-in device, is not acted upon by the Saugluftströmung, as this can be transferred from the arranged between the control element and the suction flow guide in the direction of the outlet channels. It has been found that thereby the noise of the vacuum cleaner can be further reduced.
  • the flow guide wall is concavely curved relative to the central axis of the upper part.
  • the flow guide wall can delimit on the inside a receiving space of the upper part, in which the operating element is arranged.
  • the upper part has an inner housing surrounding the suction unit and a lid covering the inner housing.
  • the inner housing surrounds the suction unit both in the circumferential direction and on the upper side and underside with the exception of an inlet opening and an outlet opening for the Saugluftströmung. This achieves considerable noise reduction.
  • the inner housing can be inserted into the lower part, because this simplifies the installation and maintenance of the vacuum cleaner.
  • the inner housing takes not only on the suction unit, but in addition, the two outlet channels. It is advantageous if the inner housing has an inner wall surrounding the suction unit in the circumferential direction and an outer wall extending at a radial distance therefrom, between which the outlet channels run. The inner wall and the outer wall thus form a boundary of the outlet channels in the radial direction, which surround the suction unit in each case substantially semicircular.
  • the inner wall and the outer wall are integrally formed on a dipping into the lower part of the bottom wall of the inner housing.
  • Inner wall, outer wall and bottom wall are therefore integrally connected to each other and can be inexpensively manufactured as a plastic molding.
  • the inner housing has a suction unit and the outlet channels covering hood, which on the inner and outer walls can be placed.
  • the hood can form a top-side termination of the inner housing.
  • the inner housing is configured in two parts, wherein the hood forms a first inner housing part and the second inner housing part is formed by the bottom wall and the inner and outer walls formed thereon.
  • the two inner housing parts can be releasably connected to each other, in particular it can be provided that the two inner housing parts are screwed together.
  • a filter element preferably a fine filter element is arranged at the outlet opening of the upper part, with the aid of which the noise of the vacuum cleaner can be reduced and on the other hand, the suction air discharged from the suction unit can be filtered.
  • the outlet channels each have at least one guide wall in their end region adjacent to the filter element for parallelizing and aligning the suction flow in the direction of the filter element. It has been found that thereby the noise of the vacuum cleaner can be reduced.
  • a filter element can thus be used with a high filter fineness, so that even small dirt particles can be reliably separated from the suction air discharged by the suction unit. Due to the parallelization and the orientation of the suction currents air swirls are avoided in the end regions of the outlet channels, which represent a mechanical load on the filter element and would increase the noise.
  • a particularly effective noise reduction is achieved in an advantageous embodiment in that in each case at least one guide wall is arranged free-standing in the respective end region of the outlet channels.
  • the free-standing guide wall preferably extends at least over one-fifth of the total length of the respective outlet channel and ends at the level of the outlet opening.
  • the distance to the guide wall to the inner wall may correspond at least to the distance of the guide wall to the outer wall. It is favorable if the distance to the inner wall is selected to be about 10% to about 30% greater than the distance between the guide wall and the outer wall.
  • the guide walls are curved.
  • the guide walls are concavely curved in their end region adjoining the outlet opening.
  • the upper part has a receptacle for a cable winding on the upper side.
  • the cable winding can receive the connecting cable of the vacuum cleaner, wherein the top-side arrangement of the cable winding simplifies the removal of the cable for the user.
  • the receptacle comprises a circular annular wall which is aligned coaxially to the central axis of the upper part is.
  • an oval-shaped annular wall can be used in the view from above on the vacuum cleaner.
  • the ring wall can be given a larger circumference, so that a connecting cable with few windings and consequently can be wound particularly easily.
  • Vacuum cleaner is shown with a lower part 12 and an attachable to this upper part 14.
  • the lower part forms a dirt collecting 16, in the known about and therefore not shown in the drawing suction nozzle of the lower part 12 dirt can be sucked.
  • a suction hose is connected in a conventional manner, which carries at its free end a suction nozzle (not shown).
  • the lower part 12 is covered by the upper part 14, which has an inner housing 18 and a cover 20.
  • the inner housing 18 is formed in two parts and comprises a first inner housing part in the form of a hood 22 and a second inner housing part 24, which has a bottom wall 26 and an inner wall 28 and an outer wall 30, which are integrally formed on the upper side of the bottom wall 26 and on which the hood 22 is placed.
  • the hood 22 is screwed to the second inner housing part 24.
  • the bottom wall 26 can be inserted into the lower part 12.
  • the inner housing 18 receives centrally a suction unit 34 with a suction turbine 35 and a suction turbine 35 driving electric motor 36.
  • the suction turbine 35 and the electric motor 36 are axially arranged one behind the other and define a central axis 38 of the upper part 14.
  • the suction turbine 35 is connected to a in the Bottom wall 26 formed inlet opening 40 in fluid communication with the dirt collecting 16, so that by means of the suction unit 34 of the dirt collecting 16 can be sucked.
  • the electric motor 36 carries on its suction turbine 35 facing away from the top of a U-shaped holding plate 42, via which the suction unit 34 is fixed on the top side of the hood 22 and at the same time forms a deflection for the output of the suction unit suction, the first of the electric motor 36th flows through in the axial direction, then guided radially outward and meets the retaining plate 42, from which it is deflected in the direction of the suction turbine 35 facing direction, so that the suction air then flows along the outside of the electric motor 36.
  • the suction air flow is illustrated by the double arrows 44.
  • the inner housing 18 has in a lateral region of a cover 20 from the overflowed outlet opening 46, on which a fine filter 48 is arranged, and on the diametrically opposite side of the outlet opening 46 are on Upper part 14, an operating element for switching on and off it electric motor 36 is arranged in the form of an electromechanical switching element 50 and a socket, not shown in the drawing for connecting a power tool.
  • the outer wall 30 forms a concavely curved Strömungsleitwand 52, and adjacent thereto, the inner wall 28 has a passage opening 54.
  • the inner wall 28 surrounds the suction unit 34 completely in the circumferential direction, so that between the suction unit 34 and the inner wall 28, an inner annular space 56 is defined.
  • the Saugluftströmung 44 meets after passing through the passage opening 54 on the concave inwardly curved Strömungsleitwand 52, which causes a division of Saugluftströmung 44, wherein the two flow components each flow through an outlet channel 59 and 60, to then together through the Outlet opening 46 and the adjoining fine filter 48 pass through.
  • the outlet channels 59 and 60 each have a free-standing guide wall 62 and 63, respectively, which cause the suction air flow to be parallelized and aligned in the direction of the fine filter 48.
  • the distance of the guide walls 62 and 63 to the inner wall 28 is about 20% larger than the distance that the guide walls 62 and 63 occupy to the outer wall 30.
  • the outlet openings 46 immediately adjacent end portions of the guide walls 62 and 63 are, this is off FIG. 2 distinct, concavely curved.
  • the cover 20 On the top side, the cover 20 has a receptacle 69 for a cable winding 70.
  • the receptacle 69 is bounded by a substantially horizontally oriented support wall 72, to which a circular, coaxial with the central axis 38 aligned annular wall 73 is formed, which is covered by a radially outwardly facing projection 74.
  • the annular wall 73 may also have an oval shape in plan view.
  • the vacuum cleaner 10 according to the invention is characterized by a particularly low noise during operation of the suction unit 34.
  • This contributes to the relatively large flow cross section of the two outlet channels 59 and 60, the large flow cross section can be ensured by the diametrical arrangement of the switching element 50 and the outlet opening 46 with fine filter 48.
  • the circumferential direction of the suction unit 34 is practically the entire space of the upper part 14 for guidance the suction flow 44 is available, so that within the outlet channels 59 and 60, a relatively low flow velocity can be ensured, by which the noise is kept low.

Abstract

The cleaner (10) has an upper and a lower shell housing with a centrally placed suction unit (34) and lower dirt collection box. The air flow is through two arcuate ducts (59,60) around the fan motor discharging through an opening (46) diametrically opposite the switch mechanism (50).

Description

Die Erfindung betrifft einen Staubsauger mit einem Staubsaugergehäuse, das ein Unterteil und ein auf dieses aufsetzbares Oberteil umfaßt, wobei das Unterteil einen Schmutzsammelbehälter ausbildet und das Oberteil ein elektrisches Saugaggregat mit einem Elektromotor und einer Saugturbine aufnimmt, wobei das Saugaggregat in Umfangsrichtung von zwei halbringförmigen Auslaßkanälen umgeben ist, die in eine gemeinsame Auslaßöffnung einmünden zum Abgeben der vom Saugaggregat angesaugten Saugluft, und wobei seitlich am Oberteil ein Bedienelement zum Ein- und Ausschalten des Elektromotors angeordnet ist.The invention relates to a vacuum cleaner with a vacuum cleaner housing, which comprises a lower part and an attachable to this upper part, wherein the lower part forms a dirt collector and the upper part receives an electric suction unit with an electric motor and a suction turbine, wherein the suction unit in the circumferential direction of two semi-annular outlet channels surrounded is, which open into a common outlet opening for discharging the suction sucked by the suction unit, and wherein an operating element for switching on and off of the electric motor is arranged laterally on the upper part.

Ein derartiger Staubsauger ist aus der EP 0 099 466 B2 bekannt. Zur Erzielung einer verbesserten Schalldämmung ist bei diesem Staubsauger vorgesehen, daß die vom Saugaggregat angesaugte Luft abwechselnd mehrfach beschleunigt und verlangsamt wird und zusätzlich mehrfach an scharfen Kanten umgelenkt wird. Es ist allerdings wünschenswert, die beim Betrieb des Staubsaugers auftretende Geräuschbelastung weiter zu verringern.Such a vacuum cleaner is from the EP 0 099 466 B2 known. To achieve improved sound insulation is provided in this vacuum cleaner, that the suctioned air from the suction unit is alternately accelerated and slowed several times and is additionally deflected several times at sharp edges. However, it is desirable to further reduce the noise level associated with operation of the vacuum cleaner.

US 4 655 694 offentbart einen Staubsauger gemäß dem Oberbegriff des Anspruchs 1. US 4,655,694 discloses a vacuum cleaner according to the preamble of claim 1.

Aufgabe der vorliegenden Erfindung ist es deshalb, einen Staubsauger der eingangs genannten Art derart weiterzubilden, daß er einen möglichst geräuscharmen Saugbetrieb ermöglicht.Object of the present invention is therefore to develop a vacuum cleaner of the type mentioned in such a way that it allows the lowest possible suction operation.

Diese Aufgabe wird bei einem Staubsauger der gattungsgemäßen Art erfindungsgemäß dadurch gelöst, daß das Bedienelement und die Auslaßöffnung einander diametral gegenüberliegen und zwischen sich das Saugaggregat und die beiden Auslaßkanäle aufnehmen.This object is achieved in a vacuum cleaner of the generic type according to the invention that the control element and the outlet opening are diametrically opposed to each other and record between them the suction unit and the two outlet channels.

Die einander diametral gegenüberliegende Anordnung von Bedienelement und Auslaßöffnung ermöglicht es, beachtliche Strömungsquerschnitte für die beiden Auslaßkanäle bereitzustellen unter Beibehaltung eines insgesamt verhältnismäßig geringen Bauraumes für das Oberteil des Staubsaugers. Die verhältnismäßig großen Strömungsquerschnitte der Auslaßkanäle wiederum haben zur Folge, daß die Geräuschentwicklung beim Betrieb des Staubsaugers gering gehalten werden kann. Somit kann erfindungsgemäß ein Staubsauger bereitgestellt werden, der sich trotz verhältnismäßig geringem Bauvolumen durch eine hohe Saugkapazität und eine geringe Geräuschentwicklung auszeichnet.The diametrically opposed arrangement of the control element and outlet opening makes it possible to provide considerable flow cross sections for the two outlet channels while maintaining a relatively small overall space for the upper part of the vacuum cleaner. The relatively large flow cross sections of the outlet channels in turn have the consequence that the noise during operation of the vacuum cleaner can be kept low. Thus, according to the invention a vacuum cleaner can be provided, which is characterized despite a relatively small volume by a high suction capacity and low noise.

Von Vorteil ist es, wenn die Saugturbine und der Elektromotor eine Mittelachse des Oberteils definierend axial hintereinander angeordnet sind.It is advantageous for the suction turbine and the electric motor to be arranged axially one behind the other so as to define a central axis of the upper part.

Von besonderem Vorteil ist es, wenn die Saugluft ausgehend von der Saugturbine den Elektromotor durchströmt und anschließend außenseitig in die der Saugturbine zugewandte Richtung am Elektromotor entlang geführt ist. Bei einer derartigen Ausführungsform dient die Saugluft zum einen als Arbeitsluft, mit deren Hilfe Schmutz in den Schmutzsammelbehälter überführt werden kann, und zum anderen dient die Saugluft als Kühlluft zur Kühlung des Elektromotors. Sowohl die Arbeitsluft als auch die Kühlluft werden gemeinsam über die Auslaßkanäle zur einzigen Auslaßöffnung des Staubsaugers geführt. Die Arbeitsluft und die Kühlluft müssen also nicht durch Trennwände voneinander getrennt werden und folglich kann für die Auslaßkanäle ein verhältnismäßig großer Strömungsquerschnitt gewählt werden, der wiederum die Geräuschbelastung gering hält, da die Strömungsgeschwindigkeit der Saugluft gering gehalten werden kann.It is particularly advantageous if the suction air, starting from the suction turbine, flows through the electric motor and is then guided on the outside in the direction of the suction turbine facing the electric motor. In such an embodiment, the suction air serves as a working air, with the aid of which dirt can be transferred into the dirt collecting container, and on the other hand, the suction air serves as cooling air for cooling the electric motor. Both the working air and the cooling air are led together via the outlet channels to the single outlet opening of the vacuum cleaner. The working air and the cooling air need not be separated from each other by partitions and consequently can be selected for the outlet channels a relatively large flow cross-section, which in turn keeps the noise level low, since the flow rate of the suction air can be kept low.

Bei einer besonders bevorzugten Ausführungsform ist vorgesehen, daß zwischen dem Saugaggregat und dem Bedienungselement eine Strömungsleitwand angeordnet ist, wobei mittels der Strömungsleitwand die vom Saugaggregat hervorgerufene Saugluftströmung in zwei Strömungsanteile aufteilbar ist, die jeweils einem Auslaßkanal zuführbar sind. Eine derartige Ausgestaltung hat den Vorteil, daß das Bedienelement, beispielsweise ein elektromechanischer Schalter oder eine elektrische Steckvorrichtung, von der Saugluftströmung nicht beaufschlagt wird, da diese von dem zwischen dem Bedienelement und dem Saugaggregat angeordneten Strömungsleitwand in Richtung der Auslaßkanäle überführbar ist. Es hat sich gezeigt, daß dadurch die Geräuschentwicklung des Staubsaugers weiter reduziert werden kann.In a particularly preferred embodiment it is provided that between the suction unit and the operating element a flow baffle is arranged, wherein by means of the Strömungsleitwand caused by the suction suction air flow can be divided into two flow components, which are each an outlet channel can be fed. Such a configuration has the advantage that the operating element, such as an electromechanical switch or an electrical plug-in device, is not acted upon by the Saugluftströmung, as this can be transferred from the arranged between the control element and the suction flow guide in the direction of the outlet channels. It has been found that thereby the noise of the vacuum cleaner can be further reduced.

Von besonderem Vorteil ist es, wenn die Strömungsleitwand eine innenseitige Abdeckung des Bedienelementes ausbildet, denn dadurch kann die Strömungsleitwand zusätzlich zu ihrer Funktion einer Aufteilung und Ausrichtung der Saugluftströmung auch die Funktion einer innenseitigen mechanischen Schutzvorrichtung des Bedienelementes übernehmen.It is particularly advantageous if the Strömungsleitwand an inside cover of the control element forms, because thereby the Strömungsleitwand in addition to their function of a division and orientation of Saugluftströmung also take over the function of an inside mechanical protection device of the control.

Es kann beispielsweise vorgesehen sein, daß die Strömungsleitwand bezogen auf die Mittelachse des Oberteils konkav gekrümmt ist. Die Strömungsleitwand kann dadurch innenseitig einen Aufnahmeraum des Oberteiles begrenzen, in welchem das Bedienelement angeordnet ist.It can be provided, for example, that the flow guide wall is concavely curved relative to the central axis of the upper part. As a result, the flow guide wall can delimit on the inside a receiving space of the upper part, in which the operating element is arranged.

Zur Erzielung einer besonders geringen Geräuschentwicklung des Staubsaugers ist bei einer besonders bevorzugten Ausführungsform vorgesehen, daß das Oberteil ein das Saugaggregat umgebendes Innengehäuse aufweist sowie einen das Innengehäuse überdeckenden Deckel. Das Innengehäuse umgibt das Saugaggregat sowohl in Umfangsrichtung als auch oberseitig und unterseitig mit Ausnahme einer Einlaßöffnung und einer Auslaßöffnung für die Saugluftströmung. Damit wird eine erhebliche Geräuschdämmung erzielt.To achieve a particularly low noise level of the vacuum cleaner is provided in a particularly preferred embodiment, that the upper part has an inner housing surrounding the suction unit and a lid covering the inner housing. The inner housing surrounds the suction unit both in the circumferential direction and on the upper side and underside with the exception of an inlet opening and an outlet opening for the Saugluftströmung. This achieves considerable noise reduction.

Von Vorteil ist es, wenn das Innengehäuse in das Unterteil einsteckbar ist, denn dadurch wird die Montage und die Wartung des Staubsaugers vereinfacht.It is advantageous if the inner housing can be inserted into the lower part, because this simplifies the installation and maintenance of the vacuum cleaner.

Vorzugsweise nimmt das Innengehäuse nicht nur das Saugaggregat auf, sondern zusätzlich auch die beiden Auslaßkanäle. Hierbei ist es von Vorteil, wenn das Innengehäuse eine das Saugaggregat in Umfangsrichtung umgebende Innenwand sowie eine in radialem Abstand zu dieser verlaufende Außenwand aufweist, zwischen denen die Auslaßkanäle verlaufen. Die Innenwand und die Außenwand bilden somit in radialer Richtung eine Begrenzung der Auslaßkanäle, die das Saugaggregat jeweils im wesentlichen halbkreisförmig umgeben.Preferably, the inner housing takes not only on the suction unit, but in addition, the two outlet channels. It is advantageous if the inner housing has an inner wall surrounding the suction unit in the circumferential direction and an outer wall extending at a radial distance therefrom, between which the outlet channels run. The inner wall and the outer wall thus form a boundary of the outlet channels in the radial direction, which surround the suction unit in each case substantially semicircular.

Bei einer besonders kostengünstig herstellbaren Ausführungsform sind die Innenwand und die Außenwand an eine in das Unterteil eintauchende Bodenwand des Innengehäuses angeformt. Innenwand, Außenwand und Bodenwand sind daher einstückig miteinander verbunden und können kostengünstig als Kunststofformteil hergestellt sein.In a particularly cost-producible embodiment, the inner wall and the outer wall are integrally formed on a dipping into the lower part of the bottom wall of the inner housing. Inner wall, outer wall and bottom wall are therefore integrally connected to each other and can be inexpensively manufactured as a plastic molding.

Von Vorteil ist es, wenn das Innengehäuse eine das Saugaggregat und die Auslaßkanäle überdeckende Haube aufweist, die auf die Innen- und Außenwände aufsetzbar ist. Die Haube kann einen oberseitigen Abschluß des Innengehäuses ausbilden. Vorzugsweise ist das Innengehäuse zweiteilig ausgestaltet, wobei die Haube ein erstes Innengehäuseteil ausbildet und das zweite Innengehäuseteil von der Bodenwand und den an diese angeformten Innen- und Außenwänden ausgebildet ist. Die beiden Innengehäuseteile können lösbar miteinander verbindbar sein, insbesondere kann vorgesehen sein, daß die beiden Innengehäuseteile miteinander verschraubbar sind.It is advantageous if the inner housing has a suction unit and the outlet channels covering hood, which on the inner and outer walls can be placed. The hood can form a top-side termination of the inner housing. Preferably, the inner housing is configured in two parts, wherein the hood forms a first inner housing part and the second inner housing part is formed by the bottom wall and the inner and outer walls formed thereon. The two inner housing parts can be releasably connected to each other, in particular it can be provided that the two inner housing parts are screwed together.

Bei einer vorteilhaften Ausführungsform ist an der Auslaßöffnung des Oberteils ein Filterelement, vorzugsweise ein Feinfilterelement, angeordnet, mit dessen Hilfe zum einen die Geräuschentwicklung des Staubsaugers reduziert werden kann und zum anderen die vom Saugaggregat abgegebene Saugluft gefiltert werden kann.In an advantageous embodiment, a filter element, preferably a fine filter element is arranged at the outlet opening of the upper part, with the aid of which the noise of the vacuum cleaner can be reduced and on the other hand, the suction air discharged from the suction unit can be filtered.

Es ist von Vorteil, wenn die Auslaßkanäle in ihrem dem Filterelement benachbarten Endbereich jeweils zumindest eine Führungswand zur Parallelisierung und Ausrichtung der Saugströmung in Richtung auf das Filterelement aufweisen. Es hat sich gezeigt, daß dadurch die Geräuschentwicklung des Staubsaugers verringert werden kann. Außerdem kann dadurch ein Filterelement zum Einsatz kommen mit einer hohen Filterfeinheit, so daß auch kleine Schmutzpartikel zuverlässig aus der vom Saugaggregat abgegebenen Saugluft abgetrennt werden können. Durch die Parallelisierung und die Ausrichtung der Saugströme werden in den Endbereichen der Auslaßkanäle Luftwirbel vermieden, die eine mechanische Belastung des Filterelementes darstellen und die Geräuschentwicklung verstärken würden.It is advantageous if the outlet channels each have at least one guide wall in their end region adjacent to the filter element for parallelizing and aligning the suction flow in the direction of the filter element. It has been found that thereby the noise of the vacuum cleaner can be reduced. In addition, a filter element can thus be used with a high filter fineness, so that even small dirt particles can be reliably separated from the suction air discharged by the suction unit. Due to the parallelization and the orientation of the suction currents air swirls are avoided in the end regions of the outlet channels, which represent a mechanical load on the filter element and would increase the noise.

Eine besonders wirksame Geräuschreduzierung wird bei einer vorteilhaften Ausführungsform dadurch erzielt, daß jeweils zumindest eine Führungswand freistehend im jeweiligen Endbereich der Auslaßkanäle angeordnet ist. Die freistehende Führungswand erstreckt sich vorzugsweise mindestens über ein Fünftel der Gesamtlänge des jeweiligen Auslaßkanales und endet in Höhe der Auslaßöffnung. Der Abstand zur Führungswand zur Innenwand kann mindestens dem Abstand der Führungswand zur Außenwand entsprechen. Günstig ist es, wenn der Abstand zur Innenwand etwa 10% bis ca. 30% größer gewählt ist als der Abstand der Führungswand zur Außenwand.A particularly effective noise reduction is achieved in an advantageous embodiment in that in each case at least one guide wall is arranged free-standing in the respective end region of the outlet channels. The free-standing guide wall preferably extends at least over one-fifth of the total length of the respective outlet channel and ends at the level of the outlet opening. The distance to the guide wall to the inner wall may correspond at least to the distance of the guide wall to the outer wall. It is favorable if the distance to the inner wall is selected to be about 10% to about 30% greater than the distance between the guide wall and the outer wall.

Günstig ist es, wenn die Führungswände gekrümmt sind. Insbesondere kann vorgesehen sein, daß bezogen auf die Strömungsrichtung der vom Saugaggregat abgegebenen Saugluft die Führungswände in ihrem an die Auslaßöffnung angrenzenden Endbereich konkav gekrümmt sind.It is favorable if the guide walls are curved. In particular, it can be provided that, based on the flow direction of the suction air emitted by the suction unit, the guide walls are concavely curved in their end region adjoining the outlet opening.

Um die Geräuschentwicklung weiter zu verringern, ist es günstig, wenn zumindest im Bereich der Auslaßöffnung Endkanten der Auslaßkanäle abgerundet sind.In order to reduce the noise further, it is advantageous if at least in the region of the outlet opening end edges of the outlet channels are rounded.

Um die Handhabung des erfindungsgemäßen Staubsaugers zu vereinfachen, ist bei einer besonders bevorzugten Ausführungsform vorgesehen, daß das Oberteil oberseitig eine Aufnahme für eine Kabelwicklung aufweist. Die Kabelwicklung kann das Anschlußkabel des Staubsaugers aufnehmen, wobei die oberseitige Anordnung der Kabelwicklung das Abnehmen des Kabels für den Benutzer vereinfacht. Hierbei ist von Vorteil, wenn die Aufnahme eine kreisförmige Ringwand umfaßt, die koaxial zur Mittelachse des Oberteiles ausgerichtet ist. Alternativ kann eine in der Ansicht von oben auf den Staubsauger ovalförmige Ringwand zum Einsatz kommen. Dadurch kann der Ringwand ein größerer Umfang verliehen werden, so daß ein Anschlußkabel mit wenigen Wicklungen und folglich besonders einfach aufgewickelt werden kann.In order to simplify the handling of the vacuum cleaner according to the invention, it is provided in a particularly preferred embodiment that the upper part has a receptacle for a cable winding on the upper side. The cable winding can receive the connecting cable of the vacuum cleaner, wherein the top-side arrangement of the cable winding simplifies the removal of the cable for the user. It is advantageous if the receptacle comprises a circular annular wall which is aligned coaxially to the central axis of the upper part is. Alternatively, an oval-shaped annular wall can be used in the view from above on the vacuum cleaner. As a result, the ring wall can be given a larger circumference, so that a connecting cable with few windings and consequently can be wound particularly easily.

Die nachfolgende Beschreibung einer bevorzugten Ausführungsform der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:

Figur 1:
eine vertikale Schnittansicht eines erfindungsgemäßen Staubsaugers;
Figur 2:
eine horizontale Schnittansicht längs der Linie 2-2 in Figur 1.
The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it:
FIG. 1:
a vertical sectional view of a vacuum cleaner according to the invention;
FIG. 2:
a horizontal sectional view taken along the line 2-2 in FIG. 1 ,

In der Zeichnung ist ein insgesamt mit dem Bezugszeichen 10 belegter Staubsauger dargestellt mit einem Unterteil 12 und einem auf dieses aufsetzbaren Oberteil 14. Das Unterteil bildet einen Schmutzsammelbehälter 16 aus, in den über einen an sich bekannten und deshalb in der Zeichnung nicht dargestellten Saugstutzen des Unterteils 12 Schmutz eingesaugt werden kann. An den Saugstutzen ist in üblicher Weise ein Saugschlauch anschließbar, der an seinem freien Ende eine Saugdüse trägt (nicht dargestellt).In the drawing, a generally designated by the reference numeral 10 Vacuum cleaner is shown with a lower part 12 and an attachable to this upper part 14. The lower part forms a dirt collecting 16, in the known about and therefore not shown in the drawing suction nozzle of the lower part 12 dirt can be sucked. At the suction nozzle a suction hose is connected in a conventional manner, which carries at its free end a suction nozzle (not shown).

Das Unterteil 12 wird vom Oberteil 14 abgedeckt, das ein Innengehäuse 18 und einen Deckel 20 aufweist. Das Innengehäuse 18 ist zweiteilig ausgebildet und umfaßt ein erstes Innengehäuseteil in Form einer Haube 22 und ein zweites Innengehäuseteil 24, das eine Bodenwand 26 aufweist sowie eine Innenwand 28 und eine Außenwand 30, die oberseitig an die Bodenwand 26 angeformt sind und auf die die Haube 22 aufgesetzt ist. Mittels Verbindungsschrauben 32 ist die Haube 22 mit dem zweiten Innengehäuseteil 24 verschraubt. Die Bodenwand 26 ist in das Unterteil 12 einsteckbar.The lower part 12 is covered by the upper part 14, which has an inner housing 18 and a cover 20. The inner housing 18 is formed in two parts and comprises a first inner housing part in the form of a hood 22 and a second inner housing part 24, which has a bottom wall 26 and an inner wall 28 and an outer wall 30, which are integrally formed on the upper side of the bottom wall 26 and on which the hood 22 is placed. By means of connecting screws 32, the hood 22 is screwed to the second inner housing part 24. The bottom wall 26 can be inserted into the lower part 12.

Das Innengehäuse 18 nimmt mittig ein Saugaggregat 34 auf mit einer Saugturbine 35 und einem die Saugturbine 35 antreibenden Elektromotor 36. Die Saugturbine 35 und der Elektromotor 36 sind axial hintereinander angeordnet und definieren eine Mittelachse 38 des Oberteils 14. Die Saugturbine 35 steht über eine in die Bodenwand 26 eingeformte Einlaßöffnung 40 mit dem Schmutzsammelbehälter 16 in Strömungsverbindung, so daß mittels des Saugaggregates 34 der Schmutzsammelbehälter 16 abgesaugt werden kann.The inner housing 18 receives centrally a suction unit 34 with a suction turbine 35 and a suction turbine 35 driving electric motor 36. The suction turbine 35 and the electric motor 36 are axially arranged one behind the other and define a central axis 38 of the upper part 14. The suction turbine 35 is connected to a in the Bottom wall 26 formed inlet opening 40 in fluid communication with the dirt collecting 16, so that by means of the suction unit 34 of the dirt collecting 16 can be sucked.

Der Elektromotor 36 trägt auf seiner der Saugturbine 35 abgewandten Oberseite ein in Querschnitt U-förmiges Halteschild 42, über das das Saugaggregat 34 oberseitig an der Haube 22 festgelegt ist und das gleichzeitig ein Umlenkelement ausbildet für die vom Saugaggregat abgegebene Saugluft, die zunächst den Elektromotor 36 in axialer Richtung durchströmt, dann radial nach außen geführt wird und auf das Halteschild 42 trifft, von dem sie in die der Saugturbine 35 zugewandte Richtung abgelenkt wird, so daß die Saugluft anschließend außenseitig am Elektromotor 36 entlangströmt. In der Zeichnung ist die Saugluftströmung durch die Doppelpfeile 44 illustriert.The electric motor 36 carries on its suction turbine 35 facing away from the top of a U-shaped holding plate 42, via which the suction unit 34 is fixed on the top side of the hood 22 and at the same time forms a deflection for the output of the suction unit suction, the first of the electric motor 36th flows through in the axial direction, then guided radially outward and meets the retaining plate 42, from which it is deflected in the direction of the suction turbine 35 facing direction, so that the suction air then flows along the outside of the electric motor 36. In the drawing, the suction air flow is illustrated by the double arrows 44.

Das Innengehäuse 18 weist in einem seitlichen Bereich eine vom Deckel 20 überfangene Auslaßöffnung 46 auf, an der ein Feinfilter 48 angeordnet ist, und auf der diametral gegenüberliegenden Seite der Auslaßöffnung 46 sind am Oberteil 14 ein Bedienelement zum Ein- und Ausschalten es Elektromotors 36 in Form eines elektromechanischen Schaltelementes 50 sowie eine in der Zeichnung nicht dargestellte Steckdose zum Anschließen eines Elektrowerkzeuges angeordnet. Im Bereich zwischen dem Schaltelement 50 und dem Saugaggregat 34 bildet die Außenwand 30 eine konkav gekrümmte Strömungsleitwand 52 aus, und dieser benachbart weist die Innenwand 28 eine Durchgangsöffnung 54 auf. Mit Ausnahme der Durchgangsöffnung 34 umgibt die Innenwand 28 das Saugaggregat 34 vollständig in Umfangsrichtung, so daß zwischen dem Saugaggregat 34 und der Innenwand 28 ein innerer Ringraum 56 definiert wird. Dieser steht über die Durchgangsöffnung 34 mit einem äußeren Ringraum 58 in Strömungsverbindung, der in radialer Richtung von der Innenwand 28 und der Außenwand 30 begrenzt wird und einen ersten halbringförmigen Auslaßkanal 59 sowie einen zweiten halbringförmigen Auslaßkanal 60 ausbildet, die sich in Umfangsrichtung zwischen der Strömungsleitwand 52 und der Auslaßöffnung 56 erstrecken. Ausgehend von dem inneren Ringraum 56 trifft die Saugluftströmung 44 nach Durchtritt der Durchgangsöffnung 54 auf die konkav nach innen gekrümmte Strömungsleitwand 52, die eine Aufteilung der Saugluftströmung 44 bewirkt, wobei die beiden Strömungsanteile jeweils einen Auslaßkanal 59 bzw. 60 durchströmen, um anschließend gemeinsam durch die Auslaßöffnung 46 und das sich daran anschließende Feinfilter 48 hindurchzutreten.The inner housing 18 has in a lateral region of a cover 20 from the overflowed outlet opening 46, on which a fine filter 48 is arranged, and on the diametrically opposite side of the outlet opening 46 are on Upper part 14, an operating element for switching on and off it electric motor 36 is arranged in the form of an electromechanical switching element 50 and a socket, not shown in the drawing for connecting a power tool. In the area between the switching element 50 and the suction unit 34, the outer wall 30 forms a concavely curved Strömungsleitwand 52, and adjacent thereto, the inner wall 28 has a passage opening 54. With the exception of the passage opening 34, the inner wall 28 surrounds the suction unit 34 completely in the circumferential direction, so that between the suction unit 34 and the inner wall 28, an inner annular space 56 is defined. This communicates via the passage opening 34 with an outer annular space 58 in flow communication, which is bounded in the radial direction by the inner wall 28 and the outer wall 30 and a first semi-annular outlet channel 59 and a second semi-annular outlet channel 60 is formed, extending in the circumferential direction between the Strömungsleitwand 52nd and the outlet port 56. Starting from the inner annular space 56, the Saugluftströmung 44 meets after passing through the passage opening 54 on the concave inwardly curved Strömungsleitwand 52, which causes a division of Saugluftströmung 44, wherein the two flow components each flow through an outlet channel 59 and 60, to then together through the Outlet opening 46 and the adjoining fine filter 48 pass through.

In ihrem dem Feinfilter 48 benachbarten Endbereich weisen die Auslaßkanäle 59 und 60 jeweils eine freistehende Führungswand 62 bzw. 63 auf, die eine Parallelisierung und Ausrichtung der Saugluftströmung in Richtung auf das Feinfilter 48 bewirken. Der Abstand der Führungswände 62 und 63 zur Innenwand 28 ist hierbei ca. 20% größer gewählt als der Abstand, den die Führungswände 62 und 63 zur Außenwand 30 einnehmen. Die der Auslaßöffnung 46 unmittelbar benachbarten Endbereiche der Führungswände 62 und 63 sind, dies wird aus Figur 2 deutlich, konkav gekrümmt. Entsprechendes gilt für parallel zu den Führungswänden 62 und 63 verlaufende Leitwände 65 bzw. 66, die der Strömungsleitwand 52 diametral gegenüberliegend an die Innenwand 58 angeformt sind über eine gemeinsame, abgerundete Endkante 67 einstückig miteinander verbunden sind.In their end portion adjacent to the fine filter 48, the outlet channels 59 and 60 each have a free-standing guide wall 62 and 63, respectively, which cause the suction air flow to be parallelized and aligned in the direction of the fine filter 48. The distance of the guide walls 62 and 63 to the inner wall 28 is about 20% larger than the distance that the guide walls 62 and 63 occupy to the outer wall 30. The outlet openings 46 immediately adjacent end portions of the guide walls 62 and 63 are, this is off FIG. 2 distinct, concavely curved. The same applies to parallel to the guide walls 62 and 63 extending baffles 65 and 66, which are the flow guide 52 formed diametrically opposite to the inner wall 58 via a common, rounded end edge 67 are integrally connected to each other.

Oberseitig weist der Deckel 20 eine Aufnahme 69 für eine Kabelwicklung 70 auf. Die Aufnahme 69 wird von einer im wesentlichen horizontal ausgerichteten Tragwand 72 begrenzt, an die eine kreisförmige, koaxial zur Mittelachse 38 ausgerichtete Ringwand 73 angeformt ist, die von einem radial nach außen weisenden Vorsprung 74 überdeckt ist. Alternativ kann die Ringwand 73 auch eine in der Draufsicht ovalförmige Gestalt aufweisen.On the top side, the cover 20 has a receptacle 69 for a cable winding 70. The receptacle 69 is bounded by a substantially horizontally oriented support wall 72, to which a circular, coaxial with the central axis 38 aligned annular wall 73 is formed, which is covered by a radially outwardly facing projection 74. Alternatively, the annular wall 73 may also have an oval shape in plan view.

Der erfindungsgemäße Staubsauger 10 zeichnet sich durch eine besonders geringe Geräuschentwicklung beim Betrieb des Saugaggregates 34 aus. Hierzu trägt der verhältnismäßig große Strömungsquerschnitt der beiden Auslaßkanäle 59 und 60 bei, deren großer Strömungsquerschnitt sichergestellt werden kann durch die diametrale Anordnung des Schaltelementes 50 und der Auslaßöffnung 46 mit Feinfilter 48. In Umfangsrichtung des Saugaggregates 34 steht praktisch der gesamte Bauraum des Oberteiles 14 zur Führung der Saugströmung 44 zur Verfügung, so daß innerhalb der Auslaßkanäle 59 und 60 eine verhältnismäßig geringe Strömungsgeschwindigkeit sichergestellt werden kann, durch die die Geräuschentwicklung gering gehalten wird.The vacuum cleaner 10 according to the invention is characterized by a particularly low noise during operation of the suction unit 34. This contributes to the relatively large flow cross section of the two outlet channels 59 and 60, the large flow cross section can be ensured by the diametrical arrangement of the switching element 50 and the outlet opening 46 with fine filter 48. In the circumferential direction of the suction unit 34 is practically the entire space of the upper part 14 for guidance the suction flow 44 is available, so that within the outlet channels 59 and 60, a relatively low flow velocity can be ensured, by which the noise is kept low.

Claims (20)

  1. Vacuum cleaner with a vacuum cleaner housing comprising a bottom part and a top part which can be placed on the latter, the bottom part forming a dirt collecting container, and the top part accommodating an electric suction unit with an electric motor and a suction turbine, the suction unit being surrounded in the circumferential direction by two half ring-shaped outlet channels which open into a common outlet opening in order to discharge the suction air drawn in by the suction unit, and an operating element for switching on and off the electric motor being arranged on a side of the top part, characterized in that the operating element (50) and the outlet opening (46) are diametrically opposed to each other and accommodate between them the suction unit (34) and the two outlet channels (59, 60).
  2. Vacuum cleaner in accordance with claim 1, characterized in that the suction turbine (35) and the electric motor (36) are arranged one behind the other in the axial direction and thereby define a central axis (38) of the top part (14).
  3. Vacuum cleaner in accordance with claim 1 or 2, characterized in that starting from the suction turbine (35), the suction air flows through the electric motor (36) and is then conducted along the outside of the electric motor (36) in the direction facing the suction turbine (35).
  4. Vacuum cleaner in accordance with any one of the preceding claims, characterized in that a flow conducting wall (52) is arranged between the suction unit (34) and the operating element (50), and the suction air flow (44) caused by the suction unit (34) is divisible by the flow conducting wall (52) into two flow components which can be conducted to a respective outlet channel (59, 60).
  5. Vacuum cleaner in accordance with claim 4, characterized in that the flow conducting wall (52) forms an inside cover for the operating element (50).
  6. Vacuum cleaner in accordance with claim 4 or 5, characterized in that the flow conducting wall (52) is concavely curved in relation to the central axis (38) of the top part (14).
  7. Vacuum cleaner in accordance with any one of the preceding claims, characterized in that the top part (14) comprises an inside housing (18) surrounding the suction unit (34), and a cover (20) covering the inside housing.
  8. Vacuum cleaner in accordance with claim 7, characterized in that the inside housing (18) is insertable into the bottom part (12).
  9. Vacuum cleaner in accordance with claim 7 or 8, characterized in that the inside housing (18) is of two-part construction and comprises a first inside housing part (22) and a second inside housing part (24).
  10. Vacuum cleaner in accordance with claim 7, 8 or 9, characterized in that the inside housing (18) comprises an inside wall (28) surrounding the suction unit (34) in the circumferential direction, and an outside wall (30) extending at a radial spacing from the inside wall (28), with the outlet channels (59, 60) extending between these.
  11. Vacuum cleaner in accordance with claim 10, characterized in that the inside wall (28) and the outside wall (30) are formed on a bottom wall (26) of the inside housing (18), which enters the bottom part (12).
  12. Vacuum cleaner in accordance with claim 10 or 11, characterized in that the inside housing (18) comprises a hood (22) which covers the suction unit (34) and the outlet channels (59, 60) and can be placed on the inside wall and the outside wall (28, 30).
  13. Vacuum cleaner in accordance with any one of the preceding claims, characterized in that a filter element (48) is arranged at the outlet opening (46).
  14. Vacuum cleaner in accordance with claim 13, characterized in that the outlet channels (59, 60) comprise in their end area next to the filter element (48) at least one respective guide wall (62, 63) for parallelizing and directing the suction air flow (44) in the direction towards the filter element (48).
  15. Vacuum cleaner in accordance with claim 14, characterized in that at least one respective guide wall (62, 63) is arranged in a freestanding manner in the respective end area of the outlet channels (59, 60).
  16. Vacuum cleaner in accordance with claim 14 or 15, characterized in that the guide walls (62, 63) are curved.
  17. Vacuum cleaner in accordance with any one of the preceding claims, characterized in that end edges (67) of the outlet channels (59, 60) are rounded off at least in the area of the outlet opening (46).
  18. Vacuum cleaner in accordance with any one of the preceding claims, characterized in that the top part (14) has on its upper side a receptacle (69) for a cable winding (70).
  19. Vacuum cleaner in accordance with claim 18, characterized in that the receptacle (69) comprises a circular ring wall (73) which is aligned coaxially with the central axis (38) of the top part (14).
  20. Vacuum cleaner in accordance with claim 18, characterized in that the receptacle (69) comprises an oval-shaped ring wall.
EP05001761A 2004-01-30 2005-01-28 Vacuum cleaner Active EP1559359B1 (en)

Priority Applications (1)

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PL05001761T PL1559359T3 (en) 2004-01-30 2005-01-28 Vacuum cleaner

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DE102004005500A DE102004005500A1 (en) 2004-01-30 2004-01-30 vacuum cleaner
DE102004005500 2004-01-30

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EP1559359A2 EP1559359A2 (en) 2005-08-03
EP1559359A3 EP1559359A3 (en) 2006-04-05
EP1559359B1 true EP1559359B1 (en) 2010-03-10

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DE (2) DE102004005500A1 (en)
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Publication number Priority date Publication date Assignee Title
US7721384B2 (en) 2005-08-25 2010-05-25 Shop-Vac Corporation Pneumatic cleaner
DE102010043581A1 (en) * 2010-11-08 2012-05-10 Hilti Aktiengesellschaft Vacuum cleaner with a cable holder
DE202011051991U1 (en) 2011-11-16 2011-11-28 G. Staehle Gmbh U. Co. Kg Cleaning device, in particular vacuum cleaner
DK3238592T3 (en) 2016-04-27 2021-07-19 Diversey Inc VACUUM CLEANER
CN109843134B (en) * 2016-10-12 2021-03-30 阿尔弗雷德·卡赫欧洲两合公司 Cleaning device and method for producing a cleaning device
DE102018108559A1 (en) 2018-04-11 2019-10-17 Alfred Kärcher SE & Co. KG cleaner
US10827889B2 (en) 2018-05-30 2020-11-10 Omachron Intellectual Property Inc. Surface cleaning apparatus
US10932634B2 (en) * 2018-05-30 2021-03-02 Omachron Intellectual Property Inc. Surface cleaning apparatus
CN109589042B (en) * 2018-12-29 2021-01-12 江苏美的清洁电器股份有限公司 Motor cover for dust collector, motor module of dust collector and dust collector

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DE3225258C2 (en) * 1982-07-06 1985-11-28 Guido Oberdorfer Wap-Maschinen, 7919 Bellenberg Vacuum cleaner
US4435877A (en) * 1982-09-30 1984-03-13 Shop-Vac Corporation Noise reducing means for vacuum cleaner
US4655694A (en) * 1985-08-01 1987-04-07 Shop-Vac Corporation Housing assembly for motor/fan means of a wet/dry vacuum cleaner
DE4429116A1 (en) * 1994-03-25 1995-09-28 Hans Dietrich Vacuum cleaner
KR970009718A (en) * 1995-08-31 1997-03-27 배순훈 Sound absorption room which lengthened exhaust channel of vacuum cleaner

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DE102004005500A1 (en) 2005-08-18
EP1559359A2 (en) 2005-08-03
DK1559359T3 (en) 2010-05-17
DE502005009164D1 (en) 2010-04-22
ATE460106T1 (en) 2010-03-15
EP1559359A3 (en) 2006-04-05
PL1559359T3 (en) 2010-08-31

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