EP4120884B1 - Filter und verfahren zur reinigung - Google Patents

Filter und verfahren zur reinigung Download PDF

Info

Publication number
EP4120884B1
EP4120884B1 EP21712119.3A EP21712119A EP4120884B1 EP 4120884 B1 EP4120884 B1 EP 4120884B1 EP 21712119 A EP21712119 A EP 21712119A EP 4120884 B1 EP4120884 B1 EP 4120884B1
Authority
EP
European Patent Office
Prior art keywords
filter
container
suction air
liquid
centrifugal separator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21712119.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4120884A1 (de
EP4120884C0 (de
Inventor
Michael BEICHLER
Hans-Werner Schneider
Arthur SCHLEICHT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Thomas Metall und Elektrowerke GmbH and Co KG
Original Assignee
Robert Thomas Metall und Elektrowerke GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Thomas Metall und Elektrowerke GmbH and Co KG filed Critical Robert Thomas Metall und Elektrowerke GmbH and Co KG
Publication of EP4120884A1 publication Critical patent/EP4120884A1/de
Application granted granted Critical
Publication of EP4120884B1 publication Critical patent/EP4120884B1/de
Publication of EP4120884C0 publication Critical patent/EP4120884C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608—Cyclonic chamber constructions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/165—Construction of inlets
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets
    • A47L9/1666—Construction of outlets with filtering means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/18—Liquid filters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/18—Liquid filters
    • A47L9/183—Spray cleaning
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/18—Liquid filters
    • A47L9/186—Construction of outlets
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/19—Means for monitoring filtering operation

Definitions

  • the invention relates to a filter for a vacuum cleaner, in particular a vacuum cleaner, a water vacuum cleaner or the like, a vacuum cleaner and a method for cleaning, wherein the filter comprises a filter housing within which a suction air channel is formed for conducting a suction air flow, wherein the filter housing has a centrifugal separator for separating particles from the suction air flow and a container for receiving the separated particles, wherein the filter has a dosing device (15) which is arranged upstream of the centrifugal separator in a flow direction of the suction air flow, wherein liquid can be sprayed into the suction air flow by means of the dosing device.
  • the filter comprises a filter housing within which a suction air channel is formed for conducting a suction air flow, wherein the filter housing has a centrifugal separator for separating particles from the suction air flow and a container for receiving the separated particles, wherein the filter has a dosing device (15) which is arranged upstream of the centrifugal separator
  • Vacuum cleaners are mobile devices for cleaning surfaces, especially floor coverings.
  • a turbine for generating a suction air flow and a filter are located within the vacuum cleaner housing.
  • a distinction is made between vacuum cleaners with filter bags, bagless vacuum cleaners, vacuum cleaners with liquid or water filters, and wet vacuum cleaners.
  • a filter for a vacuum cleaner with a filter housing and a liquid tank is known.
  • the filter housing is equipped with a centrifugal separator for dust, and a container for receiving the separated particles is arranged on the filter housing, which container is designed to be removable.
  • a dosing device in the form of a Venturi nozzle is provided in an intake channel upstream of the centrifugal separator, via which liquid from the liquid container can be dosed into a suction air stream.
  • the container for A filter bag can be used to collect the particles and the liquid can be directed to an outlet of the filter via a liquid line and a valve as required.
  • the US 2005/0126396 A1 Describes a filter for a vacuum cleaner. Liquid can be sprayed into a suction air duct in the direction of flow of the suction air stream upstream of a cyclone of the filter to bind dust particles. Dust particles should be better separated in the cyclone due to their binding with the liquid and the resulting increased centrifugal forces.
  • the KR 2011 0128471 A discloses a filter for a vacuum cleaner in which liquid can be introduced into a suction air stream within the filter to bind particles. Furthermore, the filter housing is equipped with a bellows that forms a dip tube of variable length within the filter housing.
  • the DE 10 2005 047 812 A1 shows a filter for a vacuum cleaner in which a filter housing is equipped with a centrifugal separator or cyclone.
  • a powder can be added to the suction air stream upstream of the cyclone as a dust-binding agent.
  • a so-called spray device is provided for a liquid that can be sprayed into a container to collect particles from the filter housing.
  • the filter according to the invention for a vacuum cleaner comprises a filter housing within which a suction air channel is formed for conducting a suction air flow, wherein the filter housing has a centrifugal separator for separating particles from the suction air flow and a container for receiving the separated particles, wherein the filter has a metering device which is arranged upstream of the centrifugal separator in a flow direction of the suction air flow, wherein liquid can be sprayed into the suction air flow by means of the metering device, wherein liquid can be conveyed from the container or from a liquid reservoir of the vacuum cleaner by means of the metering device, wherein the metering device is formed by at least one jet pump which is connected to the container or the liquid reservoir via at least one liquid line.
  • the filter is therefore essentially made up of the centrifugal separator and the container for collecting the separated particles.
  • This makes it possible to use the filter as a bagless filter, namely by using only the centrifugal separator, with the separated particles falling into the container.
  • the particles can be common household contaminants such as dust, fibers, small objects, house dust, etc.
  • the fact that the filter has a dosing device makes it possible to also use the filter as a liquid filter. When the container is filled with liquid, for example water, it is possible to use the dosing device to suck liquid from the container or another liquid reservoir, or to use a pump to convey it to the dosing device and spray it into the suction air stream.
  • the dosing device Since the dosing device is arranged in the direction of flow of the suction air stream upstream of the centrifugal separator, the sucked-in or pumped liquid or water from the container or the liquid reservoir is atomized in the suction air stream and transported into the centrifugal separator. Since the suction air channel runs through the dosing device, the The suction air stream is used as a driving medium for the dosing device, which sucks in the water. On the way to the centrifugal separator and also within the centrifugal separator, the atomized water mixes with the suction air, whereby particles or dust particles in the suction air are then wetted with water and thus bound.
  • the suction air duct opens into the centrifugal separator also increases the pressure of the suction air stream, allowing effective wetting of particles with liquid, similar to a diffuser.
  • By constantly wetting the inner walls of the filter they are constantly moistened and can thus be continuously cleaned.
  • the liquid and the comparatively heavier particles can be particularly easily removed from the suction air stream in the centrifugal separator and collected in the container.
  • the proportion of dust that is then discharged from the filter can be significantly reduced and unwanted odors can be effectively bound.
  • any fine dust present is already bound in the liquid and thus cannot cause any health problems. This eliminates the need for additional cleaning of fine dust residues.
  • the corresponding filter or vacuum cleaner can also be used to vacuum liquids, which can also be collected in the container.
  • the dosing device can be used to pump liquid from the container or from a liquid reservoir of the vacuum cleaner.
  • the liquid reservoir can be designed as a further, separate container, which can be part of the filter or the vacuum cleaner.
  • the liquid can be pumped by suction through the dosing device or a separate pump. A specific amount of liquid can then be metered independently of the suction power of the vacuum cleaner.
  • the dosing device is formed by at least one jet pump which is connected to the Container or the liquid reservoir.
  • the jet pump can be formed by a Venturi nozzle as an annular nozzle or by a plurality of Venturi nozzles, which can be connected to the container or the liquid reservoir via at least one liquid line. Liquid or water can be sucked in from the container or the liquid reservoir via the liquid line and continuously fed to the jet pump.
  • the jet pump can already be formed by an opening in a channel wall of the suction air channel.
  • the dosing device can be coupled to the centrifugal separator and the container as a separate assembly, for example in such a way that the dosing device can be easily dismantled and cleaned.
  • the dosing device and the centrifugal separator can form the suction air duct, and the container can be adjacent to the centrifugal separator. Accordingly, the suction air duct can run solely through the dosing device and the centrifugal separator, not through the container. In contrast to liquid filters known from the prior art, the suction air flow is then not guided through the container containing the liquid, which can significantly improve the suction effect.
  • the container can then be used as a collection container for particles or dirt, either for dry operation of the filter without liquid or for wet operation of the filter with liquid.
  • the centrifugal separator can be formed by a cyclone, in particular a single cyclone, with a dip tube, in particular a concentric dip tube.
  • the suction air stream can then enter the cyclone, whereby the cyclone can then also form a diffuser if liquid is added to the suction air stream via the dosing device.
  • particles in the suction air stream can be drawn onto a wall of the The cleaned suction air enters the cyclone and falls downwards. The thus cleaned suction air exits the cyclone via the immersion tube or exits it.
  • the centrifugal separator can also be designed with multiple cyclones or as a multi-cyclone.
  • a shut-off valve can be installed on the liquid line.
  • the shut-off valve can be used to completely close, partially open, or completely open the liquid line, allowing the introduction of liquid into the suction air stream via the dosing device to be prevented or adjusted as needed. If the liquid line is closed with the shut-off valve, the filter can be used in dry operation. This prevents liquid from entering the container, even if it is present in the container. However, it is possible to vacuum up liquid with a vacuum cleaner fitted with the filter and separate it in the filter.
  • the shut-off valve can be implemented particularly simply by means of a flexible hose section of the liquid line, which can be mechanically clamped and thus closed.
  • a liquid filter can be arranged on a bottom of the container, wherein the liquid filter can be formed by a dam formed on the bottom, which can be closed off from an interior of the container with a sieve, wherein the liquid line can be connected to the liquid filter and can open within the dam.
  • the dam can, for example, be arranged centrally on the bottom, i.e., centrally.
  • the dam can be formed by a circumferential, circular web on the bottom.
  • the sieve can be arranged on the dam or plugged onto it and thus from an interior of the dam.
  • liquid with fewer particles can be sucked in via the sieve through the liquid line.
  • Essentially purified liquid can then be fed to the dosing device.
  • a progressive saturation of the liquid or water in the container with dust particles can then occur, whereby the sucked-in water is purified by the sieve, thus preventing clogging of the liquid line.
  • a bottom wall with at least one opening for passing separated particles from the centrifugal separator into the container can be formed between the centrifugal separator and the container.
  • the bottom wall can then separate the centrifugal separator from the container, wherein the bottom wall can be attached to the centrifugal separator or the container.
  • the opening or a plurality of openings formed in the bottom wall can serve to pass particles that have been separated from the suction air flow by the centrifugal separator and sink downwards.
  • the particles that pass through the opening can then fall into the container and be collected there.
  • the size of the opening is advantageously dimensioned such that there is no renewed swirling of particles in the container as a result of the suction air flow passing past the opening.
  • the opening can be continuously annular. Fibers can then not adhere to the opening. During wet operation of the filter, the liquid can also pass through the opening into the container.
  • the bottom wall can form a substantially flat bottom of the centrifugal separator, with a A circular ring-shaped web can be formed, which can be interrupted in one area of the opening.
  • the flat bottom allows the overall height of the centrifugal separator to be significantly reduced thanks to the flat bottom.
  • the flat bottom is also much easier to clean.
  • the circular ring-shaped web can have a diameter that is larger than the diameter of a dip tube of the centrifugal separator. Particles can thus collect between the circular ring-shaped web and the outer wall of the centrifugal separator without being transported to the center of the centrifugal separator and thus below the dip tube. This increases functional reliability over longer periods of filter use.
  • these particles can be carried along the web to the opening due to the vortex generated in the centrifugal separator in the suction air flow.
  • the web can be interrupted in the area of the opening, so that particles located below the dip tube can also reach the opening.
  • the design of the web can significantly improve the cleaning effect of the filter in dry and wet operation.
  • the opening can be arranged at ⁇ 90° on a radially outer edge of the base wall relative to an inlet opening of the suction air flow in the centrifugal separator. Since the particles or liquid collect on the radial wall of the centrifugal separator, they can then easily enter the opening if the opening is formed on the outer edge of the base wall. As has surprisingly been shown, a particularly good cleaning effect of the suction air can be achieved if the opening is at an angle of ⁇ 90°, for example at an angle of ⁇ 70° relative to the inlet opening in the base wall. The angle is defined here as an angle relative to a rotation axis of the centrifugal separator.
  • the bottom wall can form an edge at the opening, wherein the edge can be formed in sections, based on a cross-section of the bottom wall, with a curve, preferably with a rounded projection extending into the container. If the particles separated by the filter are fibers, hair, or even smaller objects, these can become trapped in the opening or on its edge due to the suction air flow swirling in the centrifugal separator and cannot easily pass through the opening into the container. This can be remedied in particular by forming the edge with a curve.
  • the curve can be dimensioned so that it is larger than a cross-section of the bottom wall. This can be achieved by forming a projection on the bottom wall that extends into the container.
  • the projection can be designed in the form of a nose or a rounded web. Due to the comparatively large curve, the adhesion of fibers or the like to the edge of the opening can be effectively prevented.
  • the bottom wall can be connected to a hinge, which allows the container to be opened and closed by pivoting the bottom wall relative to the container.
  • the container and the bottom wall can also be connected to a hinge, which allows the container to be opened and closed by pivoting the bottom wall or the centrifugal separator relative to the container. This makes it possible to empty the container without having to completely separate it from the centrifugal separator.
  • a handle is arranged or formed on the container
  • the hinge can be arranged in the area of the handle in such a way that the container and bottom wall can be easily pivoted by operating a lever with a finger. The container can then be opened and closed with one hand, which makes handling the filter much easier.
  • a seal such as a rubber seal
  • Sealing can be achieved, in particular, by the formation of a suction air flow, since this creates a negative pressure in the centrifugal separator and the container.
  • a special seal between the container and the base wall or centrifugal separator is then no longer necessary.
  • a handle for handling the container can be arranged on the container.
  • the handle can, for example, be molded onto the container and designed like a handle. This handle makes the container particularly easy to handle and clean.
  • the handle can be designed so that it can be easily grasped with one hand.
  • a liquid line of the dosing device can be routed through the handle.
  • a shut-off valve can be integrated into the handle, which can then be easily operated with the hand holding the handle.
  • a separating plate for separating fine dust can be arranged above a base of the container, which can divide the interior of the container into an upper receiving space and a lower receiving space.
  • the separating plate can rest with an outer contour against an inner wall or inner side of the container and a gap can be formed in sections between the contour and the inner wall.
  • the separating plate can be substantially flat so that the separating plate is easy to clean. Dust accumulating in the container, in particular fine dust, can pass through the gap between the inner wall and the contour of the separating plate into the lower receiving space, whereby larger particles, such as fibers or smaller objects, can remain in the upper receiving space.
  • the separating plate thus prevents undesired
  • the suction air flow generated in the centrifugal separator stirs up fine dust, which can also lead to air movement in the container. Emptying the container is also made easier because the fine dust is not necessarily stirred up during emptying.
  • the separation plate can be combined with it.
  • the separation plate can be arranged on a sieve of the liquid filter or formed together with it. It is also advantageous if the bottom of the container is continuously smooth so that the container is easy to clean.
  • the container can be circular, which is particularly advantageous if the container contains liquid.
  • a vacuum cleaner moves, this can cause liquid to slosh in the container or form a wave, which can cause liquid to flow back into the centrifugal separator.
  • the circular design of the container can effectively prevent this, as a wave cannot hit a flat surface head-on.
  • smaller particles can advantageously accumulate in the lower receiving chamber.
  • the liquid filter can therefore be arranged in the upper receiving chamber, preventing the smaller particles from being sucked into a liquid line.
  • the gap can be arranged on a side of the separating plate facing away from or towards a handle. If a handle is formed on the container, it is advantageous if the gap is formed on the side of the separating plate facing the handle, so that when the container is emptied and tilted with one hand starting from the handle, fine dust remains in the lower receiving space and does not pass through the gap into the upper receiving space. Conversely, if the gap is arranged facing away from the container, fine dust can be conveniently disposed of when the container is emptied. Alternatively, the gap can be arranged at an angle of 90° or 270° relative to the handle.
  • the separating plate can then, for example, It must be attached to the bottom of the container using a plug-in connection so that the gap is always aligned in the desired direction. The separator plate can then be easily removed from the container when cleaning the container.
  • the filter can be equipped with a fill level sensor that detects the fill level of a liquid bath in the container. It is sufficient if the fill level sensor can detect a maximum fill level. This ensures that the container is not overfilled when liquid is being sucked up. When the maximum fill level is reached, the vacuum cleaner can be shut off.
  • the fill level sensor can be configured as a float inside the container and a reed switch outside the container.
  • the float can be configured with a magnet that actuates the reed switch outside the container.
  • the reed switch can be located in the suction cup adjacent to the float.
  • the filter then has no electrical wires that could come into contact with liquids. This significantly improves filter safety.
  • An intermediate filter and/or a HEPA filter can be arranged in the suction air duct, wherein the intermediate filter and/or the HEPA filter can be arranged downstream of the centrifugal separator in the flow direction of the suction air flow.
  • the intermediate filter can, for example, be a filter made of a so-called foam material, which is open-celled and thus allows the passage of the suction air flow.
  • the intermediate filter can be arranged downstream of the centrifugal separator in the flow direction of the suction air flow. With the intermediate filter, liquid particles or fine dirt particles can be separated and collected from the suction air flow particularly easily. Such an intermediate filter can also be easily cleaned, for example by washing.
  • the HEPA filter can be arranged downstream of the intermediate filter or centrifugal separator in the flow direction of the suction air duct. Any finer dust particles still present in the suction air can be removed with the HEPA filter.
  • the HEPA filter can be a HEPA filter.
  • the HEPA filter (high-efficiency particulate air filter) can be formed, for example, from a fleece or a plurality of layers of a fleece.
  • the interior surfaces of the centrifugal separator and/or the container can be provided with a self-cleaning nanostructured surface.
  • the nanostructured surface can be formed by a coating, such as a lacquer.
  • a nanostructured surface can achieve a so-called lotus effect, which essentially prevents particles or liquid from adhering to the surface. This significantly simplifies filter cleaning.
  • the vacuum cleaner according to the invention in particular a vacuum cleaner, water vacuum cleaner or the like, comprises a housing, wherein a suction air duct is formed within the housing, which connects a suction air inlet, in particular for connecting a suction hose to the housing, and a suction air outlet, wherein the vacuum cleaner comprises a turbine for forming a suction air flow in the suction air duct and a filter according to the invention.
  • the vacuum cleaner can comprise a suction hose, a suction nozzle arranged on the suction hose, and a reel arranged within the housing with a cable for supplying power to the vacuum cleaner.
  • the cleaning method is carried out using a vacuum cleaner, in particular a vacuum cleaner, water vacuum cleaner or the like, with a filter, wherein within a filter housing of the filter a suction air stream is guided through a suction air channel formed in the filter housing, wherein particles are separated from the suction air stream in a centrifugal separator of the filter housing and collected in a container of the filter housing, wherein liquid is sprayed into the suction air stream by means of a metering device of the filter, which is arranged upstream of the centrifugal separator in a flow direction of the suction air stream, wherein liquid is conveyed from the container or from a liquid reservoir of the vacuum cleaner by means of the metering device, wherein the metering device is formed by at least one jet pump which is connected to the container or the liquid reservoir via at least one liquid line.
  • FIG. 1 to 3 shows a filter 10 for a vacuum cleaner not shown in detail here, wherein the filter 10 is formed from a filter housing 11, within which a suction air duct 12 is formed for the passage of a suction air flow not shown here.
  • the filter housing 11 comprises a centrifugal separator 13 for separating of particles from the suction air stream and a container 14 for receiving the separated particles.
  • the filter 10 further comprises a metering device 15, which is arranged upstream of the centrifugal separator 13 in a flow direction of the suction air stream. By means of the metering device 15, liquid located in the container 14 and not shown here can be sucked out of the container 14 and sprayed into the suction air stream.
  • the centrifugal separator 13 is formed by a cyclone 16 with a dip tube 17, a circumferential annular outer wall 18, and a substantially flat bottom wall 19.
  • An opening 20 is formed in the bottom wall 19 for conveying separated particles into the container 14.
  • a foam pre-filter 21 is arranged above the cyclone 16 or the dip tube 17, to which an air duct 22 is connected.
  • the air duct 22 leads to a turbine of the vacuum cleaner (not shown here), which may also be preceded by a HEPA filter.
  • the dosing device 15 is formed by an annular Venturi nozzle 23 and a liquid line 24 connected to it.
  • a suction air flow is formed by the turbine, liquid located in the container 14 is sucked in via the liquid line 24 and conveyed or sprayed into the suction air flow via the Venturi nozzle 23.
  • the suction air flow enters the cyclone 16 tangentially, causing turbulence or the formation of a vortex within the cyclone 16 between the dip tube 17 and the wall 18.
  • a web 26 is formed on a base 25 of the base wall 19 and is interrupted in a region of the opening 20.
  • the opening 20 is arranged on a radially outer edge 27 of the base wall 19 relative to an inlet opening 28 of the suction air flow in the centrifugal separator 13.
  • An edge 29 is formed on the opening 20, with a rounded projection 30 extending into the container 14 being formed on the bottom wall 19.
  • the container 14 is round and has a flat bottom 31 into which the liquid line 24 opens. Liquid or water contained in the container 14 can thus be sucked in by the Venturi nozzle 23 via the liquid line 24.
  • the liquid line 24 runs over a handle 32 which is integrally formed on the container 14.
  • the liquid line 24 is partially formed by a flexible hose 33, which can be closed off by means of a slide 34 on the handle 32.
  • a hinge 35 is formed on the handle 32 with the bottom wall 19, with a lever 36 integrally formed on the bottom wall 19. The lever 36 allows the bottom wall 19 to be lifted from the container 14 such that the container 14 can be emptied or filled.
  • the container 14 further has a dam 37 at the bottom 31, which is closed with a sieve 38.
  • a separating plate 39 is formed on the dam 37, which divides an interior 40 of the container 14 into an upper receiving space 41 and a lower receiving space 42.
  • the separating plate 39 lies tightly against an inner wall 43 of the container 14 and forms a gap 44 that connects the upper receiving space 41 to the lower receiving space 42.
  • a float 45 is arranged below the bottom wall 19 and is mounted on the bottom wall 19 so that it can pivot from a vertical position to the horizontal position shown here.
  • a reed contact on the suction device can be actuated via the float 45, thus initiating a shutdown of the suction device.
  • a liquid such as water
  • the incoming suction air stream is moistened with the water in the dosing device 15, whereby the water is sucked from the container 14 into the Venturi nozzle 23 via the liquid line 24 running through the handle 32.
  • the suction air flowing in via the inlet opening 28 or the suction air stream is directed to the wall 18, whereby a surface contact and mixing of the incoming moistened suction air stream with the liquid or water takes place.
  • the liquid rinses a surface 46 of the wall 18, thereby reducing the effort required for subsequent cleaning.
  • particles not shown here in the suction air stream and the liquid are now separated from the suction air stream and reach the base 25.
  • the dry suction air stream is directed via the immersion tube 17 from the cyclone 16 through the pre-filter 21 into the air duct 22.
  • the pre-filter 21 is arranged such that a gap 47 is formed between the immersion tube 17 and the pre-filter 21.
  • the gap 47 prevents liquid particles from entering the pre-filter 21.
  • a collar 48 is formed on the immersion tube 17, via which liquid particles can be discharged to the outside.
  • the liquid contaminated with particles or dirt now flows through the opening 20 into the container 14.
  • the separator plate 39 separates coarse particles from fine particles.
  • the fine particles collect in the liquid below the separator plate 39 in the lower receiving space 42.
  • the sieve 38 retains the coarse particles so that the cleaned liquid can be conveyed via the liquid line 24.
  • the bottom wall 19 is tilted over the hinge 35 so that the container 14 is open and can be easily emptied.
  • a drain opening (not shown here) can be provided in the bottom 31, through which liquid with finer particles can be drained separately.
  • the liquid line 24 is squeezed and thus blocked by the slide 34 through a cam 49 formed thereon. Particles flowing in via the suction air stream are guided to the wall 18 and separated from the suction air stream as previously described. The particles are guided at the bottom 25 through the opening 20 into the container 14.
  • the web 26 prevents that particles reach a center of the base 19 and can be entrained again by the suction air flow.
  • the projection 30 particularly repels fibers or the like, so that they cannot get caught on the edge 29 of the base wall 19 or the opening 20.
  • liquid can also be sucked into the filter 10 without activating the dosing device 15.
  • dust-free emptying of the container 14 can then be performed.
  • the filter can be easily cleaned by sucking in uncontaminated liquid or water.
  • the suction function of the vacuum cleaner is deactivated when the container 14 is filled and the float 45 reaches the horizontal position shown here. After the container 14 has been emptied, the suction process can then be continued.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Centrifugal Separators (AREA)
EP21712119.3A 2020-03-19 2021-03-11 Filter und verfahren zur reinigung Active EP4120884B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020107583 2020-03-19
PCT/EP2021/056227 WO2021185674A1 (de) 2020-03-19 2021-03-11 Filter und verfahren zur reinigung

Publications (3)

Publication Number Publication Date
EP4120884A1 EP4120884A1 (de) 2023-01-25
EP4120884B1 true EP4120884B1 (de) 2025-05-21
EP4120884C0 EP4120884C0 (de) 2025-05-21

Family

ID=74874865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21712119.3A Active EP4120884B1 (de) 2020-03-19 2021-03-11 Filter und verfahren zur reinigung

Country Status (4)

Country Link
US (1) US20230108192A1 (pl)
EP (1) EP4120884B1 (pl)
PL (1) PL4120884T3 (pl)
WO (1) WO2021185674A1 (pl)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10060858B4 (de) * 2000-02-01 2012-02-16 Robert Thomas Metall- Und Elektrowerke Gmbh & Co. Kg Staubsauger mit einem Flüssigkeitsfilter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508515C2 (sv) * 1997-02-13 1998-10-12 Electrolux Ab Anordning vid en cyklondammsugare
KR100557174B1 (ko) * 2003-12-10 2006-03-03 삼성전자주식회사 진공 청소기의 미세 먼지 제거장치
DE102005047812A1 (de) * 2005-10-05 2007-04-12 Miele & Cie. Kg Verfahren zur Behandlung von Staub in einem Staubsammelbehälter und Vorrichtung zur Durchführung eines solchen Verfahrens
FR2894449B1 (fr) * 2005-12-09 2012-04-06 Seb Sa Dispositif de decolmatage de filtre pour aspirateur
CN101816536A (zh) * 2009-02-27 2010-09-01 乐金电子(天津)电器有限公司 一种自清洗无扬尘集尘筒
KR101680664B1 (ko) * 2010-05-24 2016-11-29 엘지전자 주식회사 진공 청소기
GB2489408B (en) * 2011-03-23 2015-08-05 Techtronic Floor Care Tech Ltd Suction cleaner
PL2676593T3 (pl) * 2012-06-19 2015-12-31 Robert Thomas Metall Und Elektrowerke Gmbh & Co Kg Odkurzacz podłogowy z umieszczonym w obudowie odkurzacza filtrem cieczy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10060858B4 (de) * 2000-02-01 2012-02-16 Robert Thomas Metall- Und Elektrowerke Gmbh & Co. Kg Staubsauger mit einem Flüssigkeitsfilter

Also Published As

Publication number Publication date
PL4120884T3 (pl) 2025-09-15
EP4120884A1 (de) 2023-01-25
EP4120884C0 (de) 2025-05-21
WO2021185674A1 (de) 2021-09-23
US20230108192A1 (en) 2023-04-06

Similar Documents

Publication Publication Date Title
DE102005002377B4 (de) Mehrzyklonbehälter-Staubsammelvorrichtung für einen Staubsauger
DE69121142T2 (de) Staubsauger
DE10110582C2 (de) Staubsauger mit einer Zyklon-Staubauffangvorrichtung
DE102012211245B4 (de) Staubsauger mit Wirbelabscheider
DE112008001294T5 (de) Zyklonartiger Universalsauger
DE102004056076A1 (de) Staubsauger sowie Zyklonabscheidevorrichtung und Zyklon für einen Staubsauger
EP1619987A1 (de) Entnehmbarer staubsammelbeh lter
WO2015078503A1 (de) Zyklon-abscheidervorrichtung
DE102004055897A1 (de) Wirbelungs-Staubsammelvorrichtung und Staubsauger mit einer solchen Vorrichtung
DE69622409T2 (de) Schmutzsauger zum bodenreinigen oder trocknen
EP1182958A1 (de) Staubsauger
DE102005017274A1 (de) Zyklontrennvorrichtung und ein Staubsauger, der dieselbe aufweist
DE69912811T2 (de) Zyklon für staubsauger
DE10060858B4 (de) Staubsauger mit einem Flüssigkeitsfilter
DE102004030350A1 (de) Staubsauger
WO2013023956A1 (de) Staubabscheideeinrichtung, insbesondere für staubsauger
DE102008030707A1 (de) Staubsammelkammer sowie Verfahren zum Betrieb einer Staubsammelkammer
DE602004009782T2 (de) Haushaltsstaubsauger
DE9105213U1 (de) Staubsauggerät
WO2021185674A1 (de) Filter und verfahren zur reinigung
DE69930607T2 (de) Staubsauger
DE602004009066T2 (de) Haushaltsstaubsauger
EP2676593B1 (de) Bodenstaubsauger mit einem in einem Staubsaugergehäuse angeordneten Flüssigkeitsfilter
EP2201878B1 (de) Staubsauger mit einem Fliehkraftabscheider
RU2850803C1 (ru) Фильтр для пылесоса и пылесос

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220914

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20241220

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502021007533

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

U01 Request for unitary effect filed

Effective date: 20250528

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT RO SE SI

Effective date: 20250606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250822

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250821

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250821

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

U20 Renewal fee for the european patent with unitary effect paid

Year of fee payment: 6

Effective date: 20260220

REG Reference to a national code

Ref country code: CH

Ref legal event code: L10

Free format text: ST27 STATUS EVENT CODE: U-0-0-L10-L00 (AS PROVIDED BY THE NATIONAL OFFICE)

Effective date: 20260402

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20260317

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20260303

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20260223

Year of fee payment: 6

26N No opposition filed

Effective date: 20260224