EP3050477B1 - Separation vessel for a vacuum cleaner - Google Patents

Separation vessel for a vacuum cleaner Download PDF

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Publication number
EP3050477B1
EP3050477B1 EP16150843.7A EP16150843A EP3050477B1 EP 3050477 B1 EP3050477 B1 EP 3050477B1 EP 16150843 A EP16150843 A EP 16150843A EP 3050477 B1 EP3050477 B1 EP 3050477B1
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EP
European Patent Office
Prior art keywords
separating
return flow
filter
flow region
chamber
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EP16150843.7A
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German (de)
French (fr)
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EP3050477A1 (en
Inventor
Christian Hunnekuhl
Diethard Becker
Michael Poetting
Udo Mersmann
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Miele und Cie KG
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Miele und Cie KG
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Publication of EP3050477A1 publication Critical patent/EP3050477A1/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608Cyclonic chamber constructions
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683Dust collecting chambers; Dust collecting receptacles

Definitions

  • the invention relates to a separating container for a vacuum cleaner, in particular cyclone vacuum cleaner, with a separation chamber and a receiving space separated structurally thereof, wherein the separation chamber and the receiving space are fluidly connected to one another through an ejection opening.
  • Such separation containers are known from the prior art, for example from EP 2 540 206 A1 known.
  • This is usually a vacuum cleaner component, which combines the functionality of a separator with the functionality of a receiving container for separated particles.
  • a separating container in the sense of the invention is preferably a component which can be handled as a unit.
  • the separating vessel can also be formed in two parts, wherein a receiving container for separated particles is independent of the separator of a vacuum cleaner manageable.
  • the separation chamber of a generic separation tank has a supply air duct and an exhaust air duct. Exhaust air duct side, for example, with the help of a blower generates a negative pressure, which leads to air being sucked through the supply air duct.
  • the supply air duct is connected for example to a floor nozzle of a vacuum cleaner, so that dust particles to be collected by the supply air duct are conveyed into the separation tank.
  • the separator providing the separation chamber is often designed as a cyclone separator.
  • the air flowing in through the supply air is accelerated along a spiral path so that dust particles contained in the air flow bounce against the wall of the separation chamber and / or are spun on reaching the discharge opening due to the centrifugal force in the direction of the receiving space.
  • the air flowing through the separating vessel then leaves the same through the exhaust air duct.
  • the EP 1 547 509 A2 or the JP 2004 121 622 A shows a separation tank for a cyclone vacuum cleaner with a receiving space for the separated dust.
  • the receiving space is structurally separated from the separating vessel and connected by means of an ejection opening with this.
  • the separation chamber and the receiving space are additionally fluidly connected to one another by means of a return flow region, which consists of a plurality of openings in the wall between the separation space and the receiving space.
  • the separation chamber and the receiving space are additionally fluidly connected by a return flow region, wherein in the return flow region, a plurality of flow openings is arranged, whose flow cross section is in each case smaller than the flow cross section of the discharge opening.
  • the flow guidance between the receiving space and the separating space is realized differently than in known separating vessels.
  • a fluidic connection between the separation chamber and the receiving space is provided exclusively by the ejection opening.
  • the invention provides an additional fluidic connection, namely the return flow region.
  • the return flow region is characterized in that it has a large number of small flow openings, which are in particular significantly smaller than the discharge opening.
  • the flow openings may be arranged in a regular pattern.
  • the flow openings in the return flow region can be formed by bores.
  • the return flow region may be spaced from the ejection opening.
  • the return flow area ensures that the flow within the separation vessel can be better channeled in the event of pressure fluctuations. If, for example, there is a sudden negative pressure in the supply air duct (sucking on a carpet), a flow impulse from the receiving space back into the separation space occurs. While this flow can only take place through the ejection opening in the known separation vessels, the separation vessel according to the invention with the return flow region offers an additional flow path for air flowing back. As a result, together with the arrangement of flow openings acting there as a kind of filter, a backflow of particles from the receiving space into the separation space can be effectively prevented.
  • the inventive design of the return flow region with a multiplicity of flow openings leads in particular to the fact that particles such as animal hair are prevented by the pattern of flow openings from flowing back into the separation space and thus remaining in the receiving space.
  • the return flow region is preferably arranged at a location between the receiving space and the separation chamber, which is not flowed around by the incoming air flowing through the supply air duct during normal operation of the vacuum cleaner. For example, it is advisable to connect the return flow region in the flow direction of the discharge opening.
  • Direction of flow here means the way of coming from the supply air duct, the separator according to the purpose flowing air. This air flow is conducted from the separation chamber through the discharge opening to the outside in the receiving space, so that in this flow direction located behind the discharge opening remindstrom Jardin has no relevance in terms of separation efficiency.
  • the separation vessel according to the invention at least the same separation performance as with known separation vessels can be achieved with a simultaneous prevention of a return transport of particles into the separation chamber at pressure fluctuations.
  • the return flow region can be formed in a wall separating the separation chamber from the receiving space. This may be the side wall forming the separator itself, the inner surface of which flows around during normal operation of the guided through the separation vessel air.
  • This design has the advantage that no additional components are required for the return flow region, but rather the return flow region can be provided by comparatively moderate interventions in the construction in a known separation vessel.
  • a filter is arranged in the receiving space.
  • the filter may be in the form of a filter frame.
  • the filter can be arranged starting from the separation chamber below the return flow region. It may in particular be arranged directly below the return flow region.
  • the filter and the wall providing the return flow region can connect to one another in a fluid-tight manner, so that the air passing through the return flow region must forcibly also pass through the filter.
  • the filter, in particular the filter frame can be arranged interchangeable in the separation vessel.
  • the filter may be formed of plastic.
  • the filter may have a mesh size which is smaller than the diameter of the flow openings of the return flow region. It has been found that a mesh size of 500 microns is particularly suitable.
  • the filter may also be arranged spaced from the separation chamber in the receiving space. This variant makes it possible for particles to pass unhindered from the separation chamber into the receiving space, but in the case of a backflow, these particles pass through the filter, get stuck there and thus do not get back into the separation space.
  • a louver is arranged in the receiving space.
  • This louver may be arranged such that an air flow from the separation chamber in the direction of the receiving space is not or only slightly obstructed, but in the return flow direction provides for a deflection of the flow away from the discharge opening.
  • the louver may serve as a kind of barb with respect to the flow. In this way, the separation efficiency of the separation vessel can be further increased and in particular prevent backflow of particles into the separation chamber.
  • the separation chamber on a supply air duct and an exhaust duct wherein the return flow region directly connects the receiving space with the exhaust duct fluidly.
  • the return flow region in particular represents a bypass of any prefilter provided between the separation chamber and the exhaust air duct.
  • the return flow region at this point is particularly effective, since the pressure fluctuations normally occurring during operation of a vacuum cleaner are such that the pressure in the exhaust air duct is always lowest. In the case of a possible backflow, the air is thus sucked primarily through the return flow region directly into the exhaust air duct, wherein the formation of the return flow region with its multiplicity of flow openings ensures that no particles pass from the receiving space into the exhaust air duct.
  • the separation behavior of the separation vessel further improves with this development, wherein in particular clogging of the prefilter can be significantly reduced.
  • FIGS. 1 to 5 show a first embodiment of a separation vessel according to the invention 1. Unless otherwise stated, this separation vessel 1 will be described below with reference to all five figures.
  • the separation vessel 1 has a cyclone separator which provides a separation chamber 2.
  • the separation chamber 2 is bounded by the inner surface of an outer wall 7 and the outer surface of a coaxially arranged in the separation chamber 2 exhaust duct 9.
  • the separator or the separation chamber 2 has an ejection opening 3. Air can flow from the separation chamber 2 into a receiving space 4 through the discharge opening 3.
  • the receiving space 4 is used for collecting separated particles.
  • the separator or the separation chamber 2 and the receiving space 4 together form the separation vessel 1 and in particular a coherent, as a unit manageable component.
  • a blower of a vacuum cleaner generates a negative pressure.
  • the exhaust duct 9 is connected to this vacuum source or pressure sink. In this way, 9 air from the interior of the separation vessel 1 is sucked through the exhaust duct. This air is sucked through a supply air duct 8 in the separation vessel 1.
  • the supply air duct 8 is fluidically connected, for example, with the floor nozzle of a vacuum cleaner.
  • the supply air duct 8 connects substantially tangentially to the wall 7 of the separation chamber 2. In this way, a cyclone vortex, whereby the air sucked through the supply air duct 8 flows helically and spirally through the separation chamber 2 in the direction of the discharge opening 3.
  • the cyclone vortex is formed (in Fig. 3 marked as flow direction 11). The entrained in the air particles are thereby pressed against the wall 7 and finally deposited on the discharge opening 3 in the receiving space 4.
  • the exhaust duct 9 may have a pre-filter 14.
  • the discharged through the exhaust duct 9 air can also be passed through a not shown downstream fine filter.
  • the receiving space 4 may be formed fluidically closed except for the fluidic connection with the separation chamber 2.
  • the separation vessel 1 has a so-called backflow region 5.
  • this return flow region 5 a plurality of small flow openings 6 is provided. Each of these flow openings 6 has a significantly smaller cross-section than the discharge opening 3.
  • the return flow region 5 causes air flowing into the receiving space 4 through the discharge opening 3 to leave the same through the return flow area 5.
  • the main advantage of this return flow region 5 is that any particles transported by the air flowing through the receiving space 4, in particular hair and the like, are prevented from passing back into the separation space 2 by the pattern of flow openings 6. Due to the structure of the backflow region 5, which can also be referred to as a hole structure, for example, fibers remain suspended and no longer return to the separation chamber 2.
  • the return flow region 5 is connected downstream in the flow direction 11 of the discharge opening. This has the advantage that the intended separation of particles in the separation chamber 2 is not impaired by the return flow region 5.
  • the air flowing through the separating space 2 rather “pushes" in the direction of the receiving space 4.
  • the inventive reflux region 5 can be used with astonishingly simple means to achieve a significantly improved flow guidance and thus a markedly improved separation result and a good result Preventing a backflow of particles from the receiving space 4 in the separation chamber 2 reach.
  • This is also advantageous insofar as particles flowing back into the separation chamber 2 are the pre-filter 14 Add quickly and thus would require a frequent cleaning.
  • the operating time between two cleaning cycles can be significantly extended with the embodiment of the invention.
  • the embodiment according to the FIGS. 1 to 5 further includes a filter 10, which, however, does not necessarily have to be provided.
  • the filter 10 is in the present case designed as a filter frame.
  • the filter 10 is arranged directly below the return flow region 5, so that air flowing back into the separation chamber 2 from the receiving space 4 has to pass through both the filter 10 and the return flow region 5.
  • the filter 10 is formed here interchangeable. It is a plastic component. It has a preferably made of plastic fabric with a mesh size of preferably 500 microns. The mesh size of the plastic fabric is preferably smaller than the width of the flow openings 6. In this way, smaller particles / fibers can be retained by the filter 10.
  • the filter 10 may be formed in particular double-walled.
  • FIG. 3 drawn arrows symbolize the flow path within a separation vessel according to the invention 1.
  • From the cyclone vortex with the flow direction 11 results in reaching the discharge opening 3, an air flow into the receiving space 4.
  • the air is passed counterclockwise through the receiving space 4, then passes through the optionally provided filter 10 and then passes as backflow 12 the return flow region 5.
  • FIG. 6 discloses a second embodiment of a separation tank according to the invention 13.
  • the peculiarity of the separation vessel 13 consists in the fact that the return flow region 5 is formed exclusively or at least also directly between the exhaust air duct 9 and the receiving space 4. This means that the air flowing back without having to pass through the supply air duct 8 again is guided directly into the exhaust air duct 9 of the separation chamber 2.
  • the flow guide works in particular because the negative pressure in the region of the exhaust air duct 8 is higher and thus a direction of the flow takes place. It is particularly advantageous if the filter 10 is provided. As a result, fine particles can be retained as described above.
  • the filter cloth of the filter 10 may be disposed obliquely, as in FIG FIG. 6 shown. In this way, the inflow area can be increased and adhering particles can be solved by gravity again by itself from the inflow area.
  • FIG. 7 shows a third embodiment of a separation tank 15 according to the invention with the first two embodiments common parts are designated by the same reference numerals.
  • the separating vessel 15 is characterized in that, in addition to the return flow region 5, it has a filter 10, which is arranged at a distance from the wall 7 of the separating space 2.
  • the filter 10 is also not disposed below the return flow region 5 and / or in fluid communication with the return flow region 5, but rather below the discharge opening 3 of the separation chamber 2.
  • louvers 16, 17 are provided, which support a proper flow in the flow direction 18.
  • the filter 10 may also be formed as a filter frame.
  • the filter 10 may be arranged interchangeable in the receiving space 4.
  • the functional principle of the filter 10 essentially corresponds to the first two embodiments, but the ejection opening 19 is formed by a component which can be exchanged together with the filter 10. According to this variant, a very definite and compact ejection region is created, wherein the filter 10 can be used as an additional return flow region through the filter 10 and the arrangement of the ejection opening 19 shown.

Description

Die Erfindung betrifft einen Abscheidebehälter für einen Staubsauger, insbesondere Zyklonabscheidestaubsauger, mit einem Abscheideraum und einem baulich davon getrennten Aufnahmeraum, wobei der Abscheideraum und der Aufnahmeraum durch eine Auswurföffnung strömungstechnisch miteinander verbunden sind.The invention relates to a separating container for a vacuum cleaner, in particular cyclone vacuum cleaner, with a separation chamber and a receiving space separated structurally thereof, wherein the separation chamber and the receiving space are fluidly connected to one another through an ejection opening.

Derartige Abscheidebehälter, sind aus dem Stand der Technik, beispielsweise aus der EP 2 540 206 A1 bekannt. Es handelt sich hierbei meist um ein Staubsaugerbauteil, welches die Funktionalität eines Abscheiders mit der Funktionalität eines Aufnahmebehälters für abgeschiedene Partikel vereint. Bei einem Abscheidebehälter im Sinne der Erfindung handelt es sich vorzugsweise um ein als Einheit handhabbares Bauteil. Allerdings kann der Abscheidebehälter auch zweigeteilt ausgebildet sein, wobei ein Aufnahmebehälter für abgeschiedene Partikel unabhängig von dem Abscheider eines Staubsaugers handhabbar ist.Such separation containers are known from the prior art, for example from EP 2 540 206 A1 known. This is usually a vacuum cleaner component, which combines the functionality of a separator with the functionality of a receiving container for separated particles. A separating container in the sense of the invention is preferably a component which can be handled as a unit. However, the separating vessel can also be formed in two parts, wherein a receiving container for separated particles is independent of the separator of a vacuum cleaner manageable.

Der Abscheideraum eines gattungsgemäßen Abscheidebehälters weist einen Zuluftkanal und einen Abluftkanal auf. Abluftkanalseitig wird beispielsweise mit Hilfe eines Gebläses ein Unterdruck erzeugt, welcher dazu führt, dass durch den Zuluftkanal Luft angesaugt wird. Der Zuluftkanal ist beispielsweise mit einer Bodendüse eines Staubsaugers verbunden, so dass durch den Zuluftkanal aufzusammelnde Staubpartikel in den Abscheidebehälter gefördert werden. Der den Abscheideraum bereitstellende Abscheider ist oftmals als Zyklonabscheider ausgebildet. Hierbei ist vorgesehen, dass die durch den Zuluftkanal einströmende Luft entlang einer spiralförmigen Bahn beschleunigt wird, so dass in dem Luftstrom enthaltene Staubpartikel gegen die Wandung des Abscheideraums prallen und/oder bei Erreichen der Auswurföffnung infolge der Zentrifugalkraft in Richtung des Aufnahmeraums geschleudert werden. Die den Abscheidebehälter durchströmende Luft verlässt denselben anschließend durch den Abluftkanal.The separation chamber of a generic separation tank has a supply air duct and an exhaust air duct. Exhaust air duct side, for example, with the help of a blower generates a negative pressure, which leads to air being sucked through the supply air duct. The supply air duct is connected for example to a floor nozzle of a vacuum cleaner, so that dust particles to be collected by the supply air duct are conveyed into the separation tank. The separator providing the separation chamber is often designed as a cyclone separator. In this case, it is provided that the air flowing in through the supply air is accelerated along a spiral path so that dust particles contained in the air flow bounce against the wall of the separation chamber and / or are spun on reaching the discharge opening due to the centrifugal force in the direction of the receiving space. The air flowing through the separating vessel then leaves the same through the exhaust air duct.

Die Herausforderung bei gattungsgemäßen Abscheidebehältern besteht nun darin, die in der Luft enthaltenen Staubpartikel vollständig abzuscheiden, im Aufnahmeraum zu sammeln und nach Möglichkeit nicht mit einer Rückströmung wieder in den Abscheideraum zu fördern. Das letztgenannte Problem tritt verstärkt bei Druckimpulsen auf, beispielsweise wenn die Bodendüse des Staubsaugers von einem ersten Bodentyp auf einen zweiten Bodentyp verfährt.The challenge with generic separation containers is now to completely separate the dust particles contained in the air, to collect in the receiving space and if possible not to promote with a return flow back into the separation chamber. The latter problem occurs increasingly with pressure pulses, for example when the floor nozzle of the vacuum cleaner moves from a first type of soil to a second type of soil.

Die EP 1 547 509 A2 oder die JP 2004 121 622 A zeigt einen Abscheidebehälter für einen Zyklonabscheidestaubsauger mit einem Aufnahmeraum für den getrennten Staub. Der Aufnahmeraum ist baulich getrennt vom Abscheidebehälter angeordnet und mittels einer Auswurföffnung mit diesem verbunden. Der Abscheideraum und der Aufnahmeraum sind zusätzlich mittels eines Rückstrombereich, der aus einer Mehrzahl von Öffnungen in der Wand zwischen Abscheideraum und Aufnahmeraum miteinander strömungstechnisch verbunden.The EP 1 547 509 A2 or the JP 2004 121 622 A shows a separation tank for a cyclone vacuum cleaner with a receiving space for the separated dust. The receiving space is structurally separated from the separating vessel and connected by means of an ejection opening with this. The separation chamber and the receiving space are additionally fluidly connected to one another by means of a return flow region, which consists of a plurality of openings in the wall between the separation space and the receiving space.

Von diesem Stand der Technik ausgehend ist es die Aufgabe der vorliegenden Erfindung, die Abscheideleistung eines gattungsgemäßen Abscheidebehälters zu verbessern, insbesondere eine Rückströmung von bereits abgeschiedenen Partikeln in den Abscheideraum bei Druckimpulsen bzw. Strömungsänderungen zu verhindern.Starting from this prior art, it is the object of the present invention to improve the separation efficiency of a generic separation vessel, in particular to prevent a backflow of already deposited particles into the separation space in the case of pressure pulses or flow changes.

Zur Lösung schlägt die Erfindung vor, dass der Abscheideraum und der Aufnahmeraum zusätzlich durch einen Rückstrombereich strömungstechnisch miteinander verbunden sind, wobei im Rückstrombereich eine Vielzahl von Strömungsöffnungen angeordnet ist, deren Strömungsquerschnitt jeweils geringer ist als der Strömungsquerschnitt der Auswurföffnung.To solve the invention proposes that the separation chamber and the receiving space are additionally fluidly connected by a return flow region, wherein in the return flow region, a plurality of flow openings is arranged, whose flow cross section is in each case smaller than the flow cross section of the discharge opening.

Erfindungsgemäß ist folglich vorgesehen, dass die Strömungsführung zwischen dem Aufnahmeraum und dem Abscheideraum anders als bei bekannten Abscheidebehältern realisiert wird. Bei aus dem Stand der Technik bekannten Abscheidebehältern ist eine strömungstechnische Verbindung zwischen dem Abscheideraum und dem Aufnahmeraum ausschließlich durch die Auswurföffnung vorgesehen. Im Unterschied dazu sieht die Erfindung eine zusätzliche strömungstechnische Verbindung vor, nämlich den Rückstrombereich. Der Rückstrombereich zeichnet sich dadurch aus, dass er über eine Vielzahl kleiner Strömungsöffnungen verfügt, welche insbesondere deutlich kleiner sind als die Auswurföffnung. Die Strömungsöffnungen können in einem regelmäßigen Muster angeordnet sein. Die Strömungsöffnungen im Rückstrombereich können durch Bohrungen ausgebildet sein. Der Rückstrombereich kann von der Auswurföffnung beabstandet sein.According to the invention, it is thus provided that the flow guidance between the receiving space and the separating space is realized differently than in known separating vessels. In separation vessels known from the prior art, a fluidic connection between the separation chamber and the receiving space is provided exclusively by the ejection opening. In contrast, the invention provides an additional fluidic connection, namely the return flow region. The return flow region is characterized in that it has a large number of small flow openings, which are in particular significantly smaller than the discharge opening. The flow openings may be arranged in a regular pattern. The flow openings in the return flow region can be formed by bores. The return flow region may be spaced from the ejection opening.

Der Rückstrombereich bewirkt, dass die Strömung innerhalb des Abscheidebehälters im Falle von Druckschwankungen besser kanalisiert werden kann. Kommt es beispielsweise zu einem plötzlichen Unterdruck im Zuluftkanal (Saugen auf einem Teppich), so kommt es zu einem Strömungsimpuls von dem Aufnahmeraum zurück in den Abscheideraum. Während diese Strömung bei den bekannten Abscheidebehältern ausschließlich durch die Auswurföffnung erfolgen kann, bietet der erfindungsgemäße Abscheidebehälter mit dem Rückstrombereich einen zusätzlichen Strömungsweg für zurückströmende Luft. Dies hat zur Folge, dass zusammen mit der dort als eine Art Filter wirkenden Anordnung von Strömungsöffnungen ein Rückströmen von Partikeln aus dem Aufnahmeraum in den Abscheideraum wirksam verhindert werden kann. Die erfindungsgemäße Ausgestaltung des Rückstrombereichs mit einer Vielzahl von Strömungsöffnungen führt insbesondere dazu, dass Partikel wie Tierhaare durch das Muster von Strömungsöffnungen daran gehindert werden, in den Abscheideraum zurückzuströmen und somit im Aufnahmeraum verbleiben.The return flow area ensures that the flow within the separation vessel can be better channeled in the event of pressure fluctuations. If, for example, there is a sudden negative pressure in the supply air duct (sucking on a carpet), a flow impulse from the receiving space back into the separation space occurs. While this flow can only take place through the ejection opening in the known separation vessels, the separation vessel according to the invention with the return flow region offers an additional flow path for air flowing back. As a result, together with the arrangement of flow openings acting there as a kind of filter, a backflow of particles from the receiving space into the separation space can be effectively prevented. The inventive design of the return flow region with a multiplicity of flow openings leads in particular to the fact that particles such as animal hair are prevented by the pattern of flow openings from flowing back into the separation space and thus remaining in the receiving space.

Der Rückstrombereich ist vorzugsweise an einer Stelle zwischen dem Aufnahmeraum und dem Abscheideraum angeordnet, welche bei bestimmungsgemäßem Betrieb des Staubsaugers nicht von durch den Zuluftkanal einströmender Luft umströmt wird. Es bietet sich beispielsweise an, den Rückstrombereich in Strömungsrichtung der Auswurföffnung nachzuschalten. Strömungsrichtung meint hierbei den Weg von durch den Zuluftkanal kommender, den Abscheider bestimmungsgemäß durchströmender Luft. Dieser Luftstrom wird vom Abscheideraum durch die Auswurföffnung nach außen in den Aufnahmeraum geführt, so dass ein in dieser Strömungsrichtung hinter der Auswurföffnung befindlicher Rückstrombereich hinsichtlich der Abscheideleistung keine Relevanz hat. Auf diese Weise kann mit dem erfindungsgemäßen Abscheidebehälter zumindest die gleiche Abscheideleistung wie mit bekannten Abscheidebehältern erreicht werden bei einer gleichzeitigen Verhinderung eines Rücktransports von Partikeln in den Abscheideraum bei Druckschwankungen.The return flow region is preferably arranged at a location between the receiving space and the separation chamber, which is not flowed around by the incoming air flowing through the supply air duct during normal operation of the vacuum cleaner. For example, it is advisable to connect the return flow region in the flow direction of the discharge opening. Direction of flow here means the way of coming from the supply air duct, the separator according to the purpose flowing air. This air flow is conducted from the separation chamber through the discharge opening to the outside in the receiving space, so that in this flow direction located behind the discharge opening Rückstrombereich has no relevance in terms of separation efficiency. In this way, with the separation vessel according to the invention at least the same separation performance as with known separation vessels can be achieved with a simultaneous prevention of a return transport of particles into the separation chamber at pressure fluctuations.

Der Rückstrombereich kann in einer den Abscheideraum vom Aufnahmeraum trennenden Wand ausgebildet sein. Es kann sich hierbei um die den Abscheider selbst bildende Seitenwand handeln, deren Innenoberfläche beim bestimmungsgemäßen Betrieb von der durch den Abscheidebehälter geführten Luft umströmt wird. Diese Ausbildung hat den Vorteil, dass für den Rückstrombereich keinerlei zusätzliche Bauteile erforderlich sind, sondern der Rückstrombereich vielmehr durch vergleichsweise moderate Eingriffe in die Konstruktion bei einem bekannten Abscheidebehälter vorgesehen werden kann.The return flow region can be formed in a wall separating the separation chamber from the receiving space. This may be the side wall forming the separator itself, the inner surface of which flows around during normal operation of the guided through the separation vessel air. This design has the advantage that no additional components are required for the return flow region, but rather the return flow region can be provided by comparatively moderate interventions in the construction in a known separation vessel.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist im Aufnahmeraum ein Filter angeordnet. Das Filter kann in Form eines Filterrahmens ausgebildet sein. Das Filter kann vom Abscheideraum ausgehend unterhalb des Rückstrombereichs angeordnet sein. Es kann insbesondere unmittelbar unterhalb des Rückstrombereichs angeordnet sein. Das Filter und die den Rückstrombereich bereitstellende Wand können fluiddicht aneinander anschließen, so dass den Rückstrombereich passierende Luft zwangsweise auch das Filter passieren muss. Das Filter, insbesondere der Filterrahmen kann auswechselbar im Abscheidebehälter angeordnet sein. Das Filter kann aus Kunststoff ausgebildet sein. Das Filter kann eine Maschenweite aufweisen, welche geringer ist als der Durchmesser der Strömungsöffnungen des Rückstrombereichs. Es hat sich herausgestellt, dass eine Maschenweite von 500 µm besonders geeignet ist. Das Filter kann auch vom Abscheideraum beabstandet im Aufnahmeraum angeordnet sein. Diese Variante ermöglicht, dass Partikel ungehindert vom Abscheideraum in den Aufnahmeraum gelangen können, diese Partikel im Falle einer Rückströmung jedoch das Filter passieren, dort hängenbleiben und somit nicht in den Abscheideraum zurückgelangen.According to an advantageous embodiment of the invention, a filter is arranged in the receiving space. The filter may be in the form of a filter frame. The filter can be arranged starting from the separation chamber below the return flow region. It may in particular be arranged directly below the return flow region. The filter and the wall providing the return flow region can connect to one another in a fluid-tight manner, so that the air passing through the return flow region must forcibly also pass through the filter. The filter, in particular the filter frame can be arranged interchangeable in the separation vessel. The filter may be formed of plastic. The filter may have a mesh size which is smaller than the diameter of the flow openings of the return flow region. It has been found that a mesh size of 500 microns is particularly suitable. The filter may also be arranged spaced from the separation chamber in the receiving space. This variant makes it possible for particles to pass unhindered from the separation chamber into the receiving space, but in the case of a backflow, these particles pass through the filter, get stuck there and thus do not get back into the separation space.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist im Aufnahmeraum eine Luftleiteinrichtung angeordnet. Diese Luftleiteinrichtung kann derart angeordnet sein, dass sich eine Luftströmung vom Abscheideraum in Richtung des Aufnahmeraums nicht oder nur unwesentlich behindert, in Rückstromrichtung jedoch für eine Ablenkung der Strömung weg von der Auswurföffnung sorgt. Die Luftleiteinrichtung kann als eine Art Widerhaken mit Bezug auf die Strömung dienen. Auf diese Weise lässt sich die Abscheideleistung des Abscheidebehälters noch weiter steigern und insbesondere eine Rückströmung von Partikeln in den Abscheideraum verhindern.According to an advantageous embodiment of the invention, a louver is arranged in the receiving space. This louver may be arranged such that an air flow from the separation chamber in the direction of the receiving space is not or only slightly obstructed, but in the return flow direction provides for a deflection of the flow away from the discharge opening. The louver may serve as a kind of barb with respect to the flow. In this way, the separation efficiency of the separation vessel can be further increased and in particular prevent backflow of particles into the separation chamber.

Gemäß einer vorteilhaften Weiterbildung der Erfindung weist der Abscheideraum einen Zuluftkanal und einen Abluftkanal auf, wobei der Rückstrombereich unmittelbar den Aufnahmeraum mit dem Abluftkanal strömungstechnisch verbindet. Der Rückstrombereich stellt insbesondere eine Umgehung eines etwaig vorgesehenen Vorfilters zwischen dem Abscheideraum und dem Abluftkanal dar. Der Rückstrombereich an dieser Stelle ist besonders effektiv, da die beim Betrieb eines Staubsaugers üblicherweise auftretenden Druckschwankungen derart sind, dass der Druck im Abluftkanal immer am niedrigsten ist. Im Falle einer etwaigen Rückströmung wird die Luft somit primär durch den Rückstrombereich direkt in den Abluftkanal hinein gesaugt, wobei die Ausbildung des Rückstrombereichs mit seiner Vielzahl von Strömungsöffnungen dafür sorgt, dass keine Partikel vom Aufnahmeraum in den Abluftkanal gelangen. Insofern verbessert sich das Abscheideverhalten des Abscheidebehälters mit dieser Weiterbildung weiter, wobei insbesondere ein Zusetzen des Vorfilters deutlich reduziert werden kann.According to an advantageous embodiment of the invention, the separation chamber on a supply air duct and an exhaust duct, wherein the return flow region directly connects the receiving space with the exhaust duct fluidly. The return flow region in particular represents a bypass of any prefilter provided between the separation chamber and the exhaust air duct. The return flow region at this point is particularly effective, since the pressure fluctuations normally occurring during operation of a vacuum cleaner are such that the pressure in the exhaust air duct is always lowest. In the case of a possible backflow, the air is thus sucked primarily through the return flow region directly into the exhaust air duct, wherein the formation of the return flow region with its multiplicity of flow openings ensures that no particles pass from the receiving space into the exhaust air duct. In this respect, the separation behavior of the separation vessel further improves with this development, wherein in particular clogging of the prefilter can be significantly reduced.

Vorteile und Merkmale der Erfindung ergeben sich auch anhand der nachfolgenden Figurenbeschreibung. Es zeigen:

Fig. 1
eine erste Ausführungsform eines erfindungsgemäßen Abscheidebehälters in geschnittener Perspektivansicht;
Fig. 2
die Ausführungsform gemäß Fig. 1 in teilgeschnittener Seitenansicht;
Fig. 3
die Ausführungsform gemäß Fig. 1 in geschnittener Frontalansicht;
Fig. 4
die Ausführungsform gemäß Fig. 1 in geschnittener Draufsicht;
Fig. 5
die Ausführungsform gemäß Fig. 1 in einer weiteren geschnittenen Perspektivansicht;
Fig. 6
eine zweite Ausführungsform eines erfindungsgemäßen Abscheidebehälters; und
Fig. 7
eine dritte Ausführungsform eines erfindungsgemäßen Abscheidebehälters in geschnittener Vorder- und Draufsicht.
Advantages and features of the invention will become apparent from the following description of the figures. Show it:
Fig. 1
a first embodiment of a separation vessel according to the invention in a sectional perspective view;
Fig. 2
the embodiment according to Fig. 1 in a partially sectioned side view;
Fig. 3
the embodiment according to Fig. 1 in cut frontal view;
Fig. 4
the embodiment according to Fig. 1 in a sectional plan view;
Fig. 5
the embodiment according to Fig. 1 in another sectional perspective view;
Fig. 6
a second embodiment of a separation vessel according to the invention; and
Fig. 7
a third embodiment of a separating container according to the invention in a sectional front and top view.

Die Figuren 1 bis 5 zeigen eine erste Ausführungsform eines erfindungsgemäßen Abscheidebehälters 1. Soweit nicht anders angegeben, wird dieser Abscheidebehälter 1 im Folgenden mit Bezug auf alle fünf Figuren beschrieben.The FIGS. 1 to 5 show a first embodiment of a separation vessel according to the invention 1. Unless otherwise stated, this separation vessel 1 will be described below with reference to all five figures.

Der Abscheidebehälter 1 verfügt über einen Zyklonabscheider, welcher einen Abscheideraum 2 bereitstellt. Der Abscheideraum 2 wird durch die Innenoberfläche einer äußeren Wand 7 und die Außenoberfläche eines koaxial im Abscheideraum 2 angeordneten Abluftkanals 9 begrenzt. Der Abscheider bzw. der Abscheideraum 2 weist eine Auswurföffnung 3 auf. Durch die Auswurföffnung 3 kann Luft vom Abscheideraum 2 in einen Aufnahmeraum 4 strömen. Der Aufnahmeraum 4 dient zum Sammeln von abgeschiedenen Partikeln. Der Abscheider bzw. der Abscheideraum 2 und der Aufnahmeraum 4 bilden zusammen den Abscheidebehälter 1 und insbesondere ein zusammenhängendes, als Einheit handhabbares Bauteil.The separation vessel 1 has a cyclone separator which provides a separation chamber 2. The separation chamber 2 is bounded by the inner surface of an outer wall 7 and the outer surface of a coaxially arranged in the separation chamber 2 exhaust duct 9. The separator or the separation chamber 2 has an ejection opening 3. Air can flow from the separation chamber 2 into a receiving space 4 through the discharge opening 3. The receiving space 4 is used for collecting separated particles. The separator or the separation chamber 2 and the receiving space 4 together form the separation vessel 1 and in particular a coherent, as a unit manageable component.

Im Betrieb des Abscheidebehälters 1 ist vorgesehen, dass ein Gebläse eines Staubsaugers einen Unterdruck erzeugt. Der Abluftkanal 9 ist an diese Unterdruckquelle bzw. Drucksenke angeschlossen. Auf diese Weise wird durch den Abluftkanal 9 Luft aus dem Innern des Abscheidebehälters 1 eingesaugt. Diese Luft wird durch einen Zuluftkanal 8 in den Abscheidebehälter 1 eingesaugt. Der Zuluftkanal 8 ist strömungstechnisch beispielsweise mit der Bodendüse eines Staubsaugers verbunden.During operation of the separating vessel 1, it is provided that a blower of a vacuum cleaner generates a negative pressure. The exhaust duct 9 is connected to this vacuum source or pressure sink. In this way, 9 air from the interior of the separation vessel 1 is sucked through the exhaust duct. This air is sucked through a supply air duct 8 in the separation vessel 1. The supply air duct 8 is fluidically connected, for example, with the floor nozzle of a vacuum cleaner.

Der Zuluftkanal 8 schließt im Wesentlichen tangential an die Wand 7 des Abscheideraums 2 an. Auf diese Weise entsteht ein Zyklonwirbel, wobei die durch den Zuluftkanal 8 angesaugte Luft schraubenförmig und spiralförmig durch den Abscheideraum 2 in Richtung der Auswurföffnung 3 strömt. Durch eine Verjüngung des Abscheideraums 2 in Richtung der Auswurföffnung 3 und die wirkenden Zentrifugalkräfte bildet sich der Zyklonwirbel aus (in Fig. 3 als Strömungsrichtung 11 markiert). Die in der Luft mitgeführten Partikel werden dadurch an die Wand 7 gedrückt und schließlich über die Auswurföffnung 3 in den Aufnahmeraum 4 abgeschieden.The supply air duct 8 connects substantially tangentially to the wall 7 of the separation chamber 2. In this way, a cyclone vortex, whereby the air sucked through the supply air duct 8 flows helically and spirally through the separation chamber 2 in the direction of the discharge opening 3. By a tapering of the separation chamber 2 in the direction of the ejection opening 3 and the centrifugal forces acting, the cyclone vortex is formed (in Fig. 3 marked as flow direction 11). The entrained in the air particles are thereby pressed against the wall 7 and finally deposited on the discharge opening 3 in the receiving space 4.

Dieser Zyklonwirbel setzt sich nicht in den Aufnahmeraum 4 fort. Die Wirbelströmung kehrt vielmehr am Ende des Abscheideraums 2 um und bildet einen sogenannten Sekundärwirbel, welcher in den Abluftkanal 9 hineinströmt. Der Abluftkanal 9 kann über einen Vorfilter 14 verfügen. Die durch den Abluftkanal 9 abgeführte Luft kann zudem durch ein nicht dargestelltes nachgeschaltetes Feinfilter geleitet werden.This cyclone vortex does not continue into the receiving space 4. Rather, the turbulent flow reverses at the end of the separation chamber 2 and forms a so-called Secondary vortex, which flows into the exhaust duct 9. The exhaust duct 9 may have a pre-filter 14. The discharged through the exhaust duct 9 air can also be passed through a not shown downstream fine filter.

Eine gewisse Restmenge an Luft strömt jedoch auch in den Aufnahmeraum 4 und muss folglich auch wieder aus dem Aufnahmeraum 4 ausströmen. Der Aufnahmeraum 4 ist somit nicht vollständig strömungsberuhigt, was aber durchaus gewünscht ist, da die Luftzirkulation im Aufnahmeraum 4 für eine Verteilung von insbesondere schwereren Staubpartikeln sorgt. Der Aufnahmeraum 4 kann bis auf die strömungstechnische Verbindung mit dem Abscheideraum 2 fluidtechnisch geschlossen ausgebildet sein.However, a certain residual amount of air also flows into the receiving space 4 and consequently has to flow out of the receiving space 4 again. The receiving space 4 is thus not completely flow-calmed, but this is quite desirable, since the air circulation in the receiving space 4 ensures a distribution of particular heavier dust particles. The receiving space 4 may be formed fluidically closed except for the fluidic connection with the separation chamber 2.

Anders als teils bei den aus dem Stand der Technik bekannten Abscheidebehältern weist der erfindungsgemäße Abscheidebehälter 1 einen sogenannten Rückstrombereich 5 auf. In diesem Rückstrombereich 5 ist eine Vielzahl von kleinen Strömungsöffnungen 6 vorgesehen. Jede dieser Strömungsöffnungen 6 hat einen deutlich kleineren Querschnitt als die Auswurföffnung 3. Der Rückstrombereich 5 bewirkt, dass durch die Auswurföffnung 3 in den Aufnahmeraum 4 einströmende Luft, denselben durch den Rückstrombereich 5 wieder verlassen kann. Der wesentliche Vorteil dieses Rückstrombereichs 5 besteht darin, dass etwaige von der durch den Aufnahmeraum 4 strömenden Luft transportierte Partikel, insbesondere Haare und dergleichen, durch das Muster von Strömungsöffnungen 6 davon abgehalten werden, zurück in den Abscheideraum 2 zu gelangen. Aufgrund der Struktur des Rückstrombereichs 5, welche auch als Lochstruktur bezeichnet werden kann, bleiben beispielsweise Fasern hängen und gelangen nicht mehr zurück in den Abscheideraum 2.Unlike part of the separation vessels known from the prior art, the separation vessel 1 according to the invention has a so-called backflow region 5. In this return flow region 5, a plurality of small flow openings 6 is provided. Each of these flow openings 6 has a significantly smaller cross-section than the discharge opening 3. The return flow region 5 causes air flowing into the receiving space 4 through the discharge opening 3 to leave the same through the return flow area 5. The main advantage of this return flow region 5 is that any particles transported by the air flowing through the receiving space 4, in particular hair and the like, are prevented from passing back into the separation space 2 by the pattern of flow openings 6. Due to the structure of the backflow region 5, which can also be referred to as a hole structure, for example, fibers remain suspended and no longer return to the separation chamber 2.

Der Rückstrombereich 5 ist in Strömungsrichtung 11 der Auswurföffnung nachgeschaltet. Dies hat zum einen den Vorteil, dass das bestimmungsgemäße Abscheiden von Partikeln im Abscheideraum 2 durch den Rückstrombereich 5 nicht beeinträchtigt wird. Andererseits wird der Rückstrombereich 5 im Innern des Abscheideraums 2 von Luft umströmt, nachdem diese die Auswurföffnung 3 passiert hat. Diese Luftströmung erzeugt einen Unterdruck und somit einen gewissen Saugeffekt, so dass insgesamt eine gewünschte und bestimmungsgemäße Rückströmung von Luft ausschließlich durch den Rückstrombereich 5 unterstützt wird. Im Bereich der Auswurföffnung 3 hingegen "drückt" die durch den Abscheideraum 2 strömende Luft vielmehr in Richtung des Aufnahmeraums 4. Im Ergebnis lässt sich durch den erfindungsgemäßen Rückstrombereich 5 daher mit verblüffend einfachen Mitteln eine deutlich verbesserte Strömungsführung und dadurch ein deutlich verbessertes Abscheideergebnis und ein gutes Unterbinden einer Rückströmung von Partikeln aus dem Aufnahmeraum 4 in den Abscheideraum 2 erreichen. Dies ist auch insofern von Vorteil, als in den Abscheideraum 2 zurückströmende Partikel das Vorfilter 14 schnell zusetzen und somit eine oftmalige Reinigung erforderlich machen würden. Die Betriebsdauer zwischen zwei Reinigungszyklen kann mit der erfindungsgemäßen Ausgestaltung deutlich verlängert werden.The return flow region 5 is connected downstream in the flow direction 11 of the discharge opening. This has the advantage that the intended separation of particles in the separation chamber 2 is not impaired by the return flow region 5. On the other hand, air flows around the return flow area 5 in the interior of the separation chamber 2 after it has passed the discharge opening 3. This air flow generates a negative pressure and thus a certain suction effect, so that overall a desired and intended return flow of air is supported exclusively by the return flow region 5. In the region of the ejection opening 3, on the other hand, the air flowing through the separating space 2 rather "pushes" in the direction of the receiving space 4. As a result, the inventive reflux region 5 can be used with astonishingly simple means to achieve a significantly improved flow guidance and thus a markedly improved separation result and a good result Preventing a backflow of particles from the receiving space 4 in the separation chamber 2 reach. This is also advantageous insofar as particles flowing back into the separation chamber 2 are the pre-filter 14 Add quickly and thus would require a frequent cleaning. The operating time between two cleaning cycles can be significantly extended with the embodiment of the invention.

Die Ausführungsform gemäß den Figuren 1 bis 5 weist des Weiteren ein Filter 10 auf, welches allerdings nicht zwingend vorgesehen sein muss. Das Filter 10 ist vorliegend als ein Filterrahmen ausgeführt. Das Filter 10 ist direkt unter dem Rückstrombereich 5 angeordnet, so dass aus dem Aufnahmeraum 4 in den Abscheideraum 2 zurückströmende Luft sowohl das Filter 10 als auch der Rückstrombereich 5 passieren muss. Das Filter 10 ist vorliegend auswechselbar ausgebildet. Es handelt sich um ein Kunststoffbauteil. Es weist ein vorzugsweise aus Kunststoff gebildetes Gewebe mit einer Maschenweite von vorzugsweise 500 µm auf. Die Maschenweite des Kunststoffgewebes ist vorzugsweise kleiner als die Weite der Strömungsöffnungen 6. Auf diese Weise können durch das Filter 10 auch kleinere Partikel/Fasern zurückgehalten werden. Das Filter 10 kann insbesondere doppelwandig ausgebildet sein.The embodiment according to the FIGS. 1 to 5 further includes a filter 10, which, however, does not necessarily have to be provided. The filter 10 is in the present case designed as a filter frame. The filter 10 is arranged directly below the return flow region 5, so that air flowing back into the separation chamber 2 from the receiving space 4 has to pass through both the filter 10 and the return flow region 5. The filter 10 is formed here interchangeable. It is a plastic component. It has a preferably made of plastic fabric with a mesh size of preferably 500 microns. The mesh size of the plastic fabric is preferably smaller than the width of the flow openings 6. In this way, smaller particles / fibers can be retained by the filter 10. The filter 10 may be formed in particular double-walled.

Die in Figur 3 eingezeichneten Pfeile symbolisieren den Strömungsweg innerhalb eines erfindungsgemäßen Abscheidebehälters 1. Aus dem Zyklonwirbel mit der Strömungsrichtung 11 resultiert bei Erreichen der Auswurföffnung 3 eine Luftströmung in den Aufnahmeraum 4. Dort erfolgt aufgrund des Rückstrombereichs 5 eine sehr definierte Strömungsführung. Die Luft wird entgegen des Uhrzeigersinns durch den Aufnahmeraum 4 geführt, passiert anschließend das gegebenenfalls vorgesehene Filter 10 und passiert anschließend als Rückströmung 12 den Rückstrombereich 5. Aufgrund des Zyklonwirbels innerhalb des Abscheideraums 2 wird diese Rückströmung 12 - wie bereits erläutert - durch Erzeugung eines Unterdrucks beim Überströmen des Rückstrombereichs 5 der Wand 7 unterstützt.In the FIG. 3 drawn arrows symbolize the flow path within a separation vessel according to the invention 1. From the cyclone vortex with the flow direction 11 results in reaching the discharge opening 3, an air flow into the receiving space 4. There is due to the return flow region 5, a very defined flow guidance. The air is passed counterclockwise through the receiving space 4, then passes through the optionally provided filter 10 and then passes as backflow 12 the return flow region 5. Due to the cyclone vortex within the separation chamber 2, this return flow 12 - as already explained - by generating a negative pressure at Overflow of the return flow region 5 of the wall 7 supported.

Figur 6 offenbart eine zweite Ausführungsform eines erfindungsgemäßen Abscheidebehälters 13. Im Wesentlichen gilt das zuvor Ausgeführte und gleiche Teile sind mit gleichen Bezugszeichen bezeichnet. Die Besonderheit des Abscheidebehälters 13 besteht nun darin, dass der Rückstrombereich 5 ausschließlich oder zumindest auch unmittelbar zwischen dem Abluftkanal 9 und dem Aufnahmeraum 4 ausgebildet ist. Dies bedeutet, dass die zurückströmende Luft ohne den Zuluftkanal 8 erneut passieren zu müssen unmittelbar in den Abluftkanal 9 des Abscheideraums 2 hineingeführt wird. Die Strömungsführung funktioniert insbesondere deswegen, da der Unterdruck im Bereich des Abluftkanals 8 höher ist und somit eine Richtung der Strömung stattfindet. Besonders vorteilhaft ist es, wenn das Filter 10 vorgesehen ist. Hierdurch lassen sich wie zuvor bereits beschrieben auch feine Partikel zurückhalten. Dies ist vorliegend besonders ratsam, da die den Rückstrombereich 5 passierende Luft nicht durch das Vorfilter 14 geführt wird. Das Filtergewebe des Filters 10 kann schräg angeordnet sein, wie in Figur 6 dargestellt. Auf diese Weise kann die Anströmfläche vergrößert werden und anhaftende Partikel können sich durch die Schwerkraft wieder von selbst von der Anströmfläche lösen. FIG. 6 discloses a second embodiment of a separation tank according to the invention 13. Essentially, the above and the same parts are denoted by the same reference numerals. The peculiarity of the separation vessel 13 consists in the fact that the return flow region 5 is formed exclusively or at least also directly between the exhaust air duct 9 and the receiving space 4. This means that the air flowing back without having to pass through the supply air duct 8 again is guided directly into the exhaust air duct 9 of the separation chamber 2. The flow guide works in particular because the negative pressure in the region of the exhaust air duct 8 is higher and thus a direction of the flow takes place. It is particularly advantageous if the filter 10 is provided. As a result, fine particles can be retained as described above. This is especially true in the present case advisable, since the backflow region 5 passing air is not passed through the pre-filter 14. The filter cloth of the filter 10 may be disposed obliquely, as in FIG FIG. 6 shown. In this way, the inflow area can be increased and adhering particles can be solved by gravity again by itself from the inflow area.

Figur 7 zeigt eine dritte Ausführungsform eines erfindungsgemäßen Abscheidebehälters 15. Mit den ersten beiden Ausführungsformen gemeinsame Teile sind mit gleichen Bezugszeichen bezeichnet. FIG. 7 shows a third embodiment of a separation tank 15 according to the invention with the first two embodiments common parts are designated by the same reference numerals.

Der Abscheidebehälter 15 zeichnet sich dadurch aus, dass er ergänzend zu dem Rückstrombereich 5 ein Filter 10 aufweist, welches von der Wand 7 des Abscheideraums 2 beabstandet angeordnet ist. Das Filter 10 ist zudem nicht unterhalb des Rückstrombereichs 5 angeordnet und/oder in strömungstechnischer Verbindung mit dem Rückstrombereich 5, sondern vielmehr unterhalb der Auswurföffnung 3 des Abscheideraums 2. Zusätzlich sind Luftleiteinrichtungen 16, 17 vorgesehen, welche eine bestimmungsgemäße Strömung in Strömungsrichtung 18 unterstützen.The separating vessel 15 is characterized in that, in addition to the return flow region 5, it has a filter 10, which is arranged at a distance from the wall 7 of the separating space 2. The filter 10 is also not disposed below the return flow region 5 and / or in fluid communication with the return flow region 5, but rather below the discharge opening 3 of the separation chamber 2. In addition, louvers 16, 17 are provided, which support a proper flow in the flow direction 18.

Das Filter 10 kann ebenfalls als Filterrahmen ausgebildet sein. Das Filter 10 kann auswechselbar im Aufnahmeraum 4 angeordnet sein. Das Funktionsprinzip des Filters 10 entspricht im Wesentlichen den ersten beiden Ausführungsformen, jedoch ist die Auswurföffnung 19 durch ein zusammen mit dem Filter 10 auswechselbares Bauteil gebildet. Gemäß dieser Variante wird ein sehr definiter und kompakter Auswurfbereich geschaffen, wobei durch das Filter 10 und die gezeigte Anordnung der Auswurföffnung 19 das Filter 10 als zusätzlicher Rückstrombereich verwendet werden kann.The filter 10 may also be formed as a filter frame. The filter 10 may be arranged interchangeable in the receiving space 4. The functional principle of the filter 10 essentially corresponds to the first two embodiments, but the ejection opening 19 is formed by a component which can be exchanged together with the filter 10. According to this variant, a very definite and compact ejection region is created, wherein the filter 10 can be used as an additional return flow region through the filter 10 and the arrangement of the ejection opening 19 shown.

Bezugszeichenreference numeral

11
Abscheidebehälterseparating vessel
22
Abscheideraumseparating chamber
33
Auswurföffnungejection port
44
Aufnahmeraumaccommodation space
55
RückstrombereichBackflow area
66
Strömungsöffnungflow opening
77
Wandwall
88th
Zuluftkanalsupply air duct
99
Abluftkanalexhaust duct
1010
Filterfilter
1111
Strömungsrichtungflow direction
1212
Rückströmungbackwash
1313
Abscheidebehälterseparating vessel
1414
Vorfilterprefilter
1515
Abscheidebehälterseparating vessel
1616
LuftleiteinrichtungCowl
1717
LuftleiteinrichtungCowl
1818
Strömungsrichtungflow direction
1919
Auswurföffnungejection port

Claims (8)

  1. Separating container (1, 13, 15) for a vacuum cleaner, in particular a cyclonically separating vacuum cleaner, having a separating chamber (2) and a structurally separate receiving chamber (4), the separating chamber (2) and the receiving chamber (4) being fluidically interconnected by an ejection opening (3, 19), the separating chamber (2) and the receiving chamber (4) being additionally fluidically interconnected by a return flow region (5), a plurality of flow openings (6) being arranged in the return flow region (5), the flow cross section of which flow openings is in each case smaller than the flow cross section of the ejection opening (3, 19),
    characterised in that
    a filter (10) is arranged in the receiving chamber (4), which filter is arranged to be spaced apart from the separating chamber (2) in the receiving chamber (4).
  2. Separating container (1, 13, 15) according to claim 1, characterised in that the return flow region (5) is formed in a wall (7) which separates the separating chamber (2) from the receiving chamber (4).
  3. Separating container (1, 13, 15) according to either of the preceding claims, characterised in that the return flow region (5) is connected downstream in the flow direction of the ejection opening (3, 19).
  4. Separating container (1, 13, 15) according to any of the preceding claims, characterised in that the flow openings (6) are formed by holes in the return flow region (5).
  5. Separating container (1, 13, 15) according to claim 1, characterised in that the filter (10) is arranged below the return flow region (5) starting from the separating chamber (2).
  6. Separating container (1, 13, 15) according to either claim 1 or claim 5, characterised in that the filter (10) has a mesh size which is smaller than the diameter of the flow openings (6) in the return flow region (5).
  7. Separating container (1, 13, 15) according to any of the preceding claims, characterised in that an air guiding device (16, 17) is arranged in the receiving chamber (4).
  8. Separating container (1, 13, 15) according to any of the preceding claims, characterised in that the separating chamber (2) has an air supply duct (8) and an air exhaust duct (9), the return flow region (5) directly fluidically connecting the receiving chamber (4) to the air exhaust duct (9).
EP16150843.7A 2015-01-27 2016-01-12 Separation vessel for a vacuum cleaner Active EP3050477B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015101107.7A DE102015101107A1 (en) 2015-01-27 2015-01-27 Separator container for a vacuum cleaner

Publications (2)

Publication Number Publication Date
EP3050477A1 EP3050477A1 (en) 2016-08-03
EP3050477B1 true EP3050477B1 (en) 2019-07-31

Family

ID=55080060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16150843.7A Active EP3050477B1 (en) 2015-01-27 2016-01-12 Separation vessel for a vacuum cleaner

Country Status (2)

Country Link
EP (1) EP3050477B1 (en)
DE (1) DE102015101107A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB700791A (en) * 1951-08-03 1953-12-09 English Electric Co Ltd Improvements in and relating to dust separators
JP4159843B2 (en) * 2002-10-04 2008-10-01 株式会社東芝 Vacuum cleaner
EP1547509A3 (en) * 2003-12-24 2006-09-20 Daewoo Electronics Corporation Cyclone dust collecting device for use in a vacuum cleaner
CN102858218B (en) * 2010-02-26 2015-08-26 株式会社东芝 Dust separation gathering-device and electric cleaner

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
DE102015101107A1 (en) 2016-07-28
EP3050477A1 (en) 2016-08-03

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