EP3417751A1 - Dispositif filtrant doté d'un filtre plat - Google Patents

Dispositif filtrant doté d'un filtre plat Download PDF

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Publication number
EP3417751A1
EP3417751A1 EP18170546.8A EP18170546A EP3417751A1 EP 3417751 A1 EP3417751 A1 EP 3417751A1 EP 18170546 A EP18170546 A EP 18170546A EP 3417751 A1 EP3417751 A1 EP 3417751A1
Authority
EP
European Patent Office
Prior art keywords
filter
air
air inlet
air outlet
flat
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.)
Granted
Application number
EP18170546.8A
Other languages
German (de)
English (en)
Other versions
EP3417751B1 (fr
Inventor
Stefan Hassfurter
Veronika Kirsch
Markus Kühnel
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3417751A1 publication Critical patent/EP3417751A1/fr
Application granted granted Critical
Publication of EP3417751B1 publication Critical patent/EP3417751B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/12—Dry filters
    • A47L9/122—Dry filters flat
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation

Definitions

  • the invention relates to a filter arrangement. Furthermore, the invention relates to a vacuum cleaner and a cleaning robot with such a filter arrangement.
  • the European patent EP 1 474 025 B1 describes a filter housing comprising an inlet for receiving an air flow, a cavity for receiving a filter and a filter disposed in the cavity.
  • the filter housing has an airflow passage extending between the inlet and the filter cavity.
  • At least one wall is positioned in the air flow passage to divide the air flow passage into a plurality of separate elongate channels, each wall extending to or contacting an upstream surface of the filter, such that each channel has a separate portion upstream thereof lying surface of the filter communicates.
  • the air flow passage extends along the channels in a direction inclined to the upstream surface of the filter.
  • a hand-held vacuum cleaner is described according to the cyclone principle having superimposed first and second filters to filter a working air flow both on the inlet side and on the outlet side of a vacuum motor.
  • the first and second filters may be mounted in a common frame in the housing of the vacuum cleaner, wherein the first and second filters may be superposed on each other.
  • the US patent US 8 424 153 B2 describes a handheld vacuum cleaner having a compact cylindrical outlet filter assembly that is easily accessible to a user.
  • the filter is removably mounted in the housing between an exhaust outlet and a suction source.
  • the cleaning robot dust container comprises a container wall surrounding the dust container, a first side, a second side, a dust particle and air inlet opening disposed in the first side of the dust container, an air outlet opening provided in the second side of the dust container Dust container is arranged and a filter which is mounted in the dust container so that the air flow through the dust container passes through the filter.
  • the German patent application DE 10 2015 105 059 A1 discloses a filter assembly with a filter and a filter receptacle into which the filter, disposed in a cassette, is insertable in a longitudinal direction.
  • the filter assembly includes means for retaining dirt particles deposited on the dirty side.
  • the US patent US 4 710 297 A discloses an air filter having a pleated, in some embodiments annular, filter medium.
  • a radial air inlet relative to the axis of the ring and a central axial air outlet are provided.
  • the filter medium is not annular, but straight, and inlet and outlet are on opposite narrow sides of the filter medium.
  • US patent publication US 2005/0 138 763 A1 discloses a cyclone vacuum cleaner with a flat, pleated filter, with air passing on a narrow side of the filter, passing from one side of the filter to the other side of the filter and then through the filter, substantially over its entire area.
  • the filter assembly comprises a filter frame for receiving a flat filter and the flat filter, wherein the flat filter has an air inlet side and an opposite to the air inlet side arranged air outlet side.
  • the filter arrangement comprises an air inlet region which adjoins the air inlet side of the flat filter and is fluidically connected to an air inlet opening via an air inlet channel, and an air outlet region which adjoins the air outlet side of the flat filter and is fluidically connected to an air outlet opening via an air outlet channel.
  • the flat filter can be traversed by air from the air inlet area to the air outlet area.
  • the flat filter extends in the axial direction over at least 60% of the axial extent of at least one of the air inlet opening and the air outlet opening.
  • the filter arrangement has a flat filter, wherein the axial direction of the filter arrangement corresponds to the axial direction of the flat filter.
  • the flat filter defines a plane, and the axial direction is the direction perpendicular to the filter plane.
  • the filter arrangement has an air inlet opening, via which the filter arrangement, the air to be filtered can be supplied.
  • the filter arrangement has an air outlet opening through which the filtered air flows out.
  • the flat filter extends in the axial direction over at least 60% of the axial extent of at least one of the air inlet opening and the air outlet opening.
  • a vacuum cleaner according to the invention comprises a filter arrangement described above.
  • a cleaning robot according to the invention comprises a filter arrangement as described above.
  • the space requirement in the axial direction is a critical parameter in the design of the device because of the driving behavior of a cleaning robot.
  • a cleaning robot is a cleaning apparatus capable of automatically moving relative to a surface to be cleaned or an object to be cleaned, and wholly or partially cleaning the surface or the object.
  • the cleaning robot is equipped with one or more cleaning devices.
  • the cleaning robot may be equipped with fixed or driven brushes, rollers, wipers, cloths or other cleaning equipment.
  • the cleaning robot can comprise a vacuum cleaner, for example a wet vacuum or a dry vacuum cleaner or a combined wet / dry vacuum cleaner.
  • a cleaning robot is usually equipped with a chassis.
  • the landing gear can be controlled, for example, by a controller operating in the Cleaning robot or outside the cleaning robot may be present.
  • the controller draws data provided by one or more sensors which, at least in part, may be present in the cleaning robot or outside the cleaning robot.
  • Typical sensors include a mechanical collision sensor, a camera, an ultrasonic sensor, an infrared sensor, a distance sensor, an acceleration sensor, and a compass.
  • a cleaning robot may include or may be operatively connected to one or more mapping means.
  • Mapping means comprise, in particular, devices for receiving, storing or evaluating geometrical properties of the room in which the cleaning robot is to work or work. The mapping means can advantageously contribute to a planned navigation of the cleaning robot in the room. Rooms can be outside or inside, z. B. interiors of buildings such as living spaces or household spaces, be.
  • a cleaning robot is usually accumulator-operated. So that the accumulator of such a cleaning robot can be reloaded after a cleaning phase, a charging station separate from the cleaning robot can be provided.
  • the cleaning robot can be designed so that it automatically starts the charging station for charging the battery and / or automatically connects to the charging station.
  • a cleaning robot may, for example, comprise a vacuum cleaner, wherein the vacuum cleaner may be configured as a wet vacuum cleaner, as a dry vacuum cleaner or as a combined wet / dry vacuum cleaner.
  • the cleaning robot may comprise a wet vacuum and be adapted to apply liquid to a surface to be cleaned or an object to be cleaned and to suck the liquid by means of the wet vacuum again.
  • the cleaning robot may include other cleaning devices such as brushes, rollers, wipers, cloths or other cleaning devices.
  • the cleaning action of the vacuum cleaner is supported by these additional cleaning devices.
  • a vacuum cleaner in the sense of the present invention is a device which can generate a suction air flow which acts on an object, usually a surface, for example a floor surface, in order to remove particles, such as dirt or moisture Dust particles, but also liquids, for example, from the object by being detected by the Saugluftstrom and entrained (hereinafter also referred to as "suction").
  • a vacuum cleaner can achieve such a cleaning effect.
  • the vacuum cleaner is usually equipped with a suction fan for generating a suction air flow, wherein a suction port of the vacuum cleaner is in flow communication with the suction side of the suction fan.
  • the suction port is typically designed so that it over the object to be cleaned, for. B. a floor surface, can be performed to the particles, for. As dust or dirt to suck.
  • the suction fan is usually in fluid communication with at least one dust separator, such as a generally interchangeable dust filter bag, a filter device or a centrifugal separator. Dirt particles taken up by the suction air stream are generally collected in a dust collecting chamber, with the dust filter usually being present in the dust collection chamber in the case of a vacuum cleaner with a dust filter bag.
  • Cleaning robots that are equipped with a vacuum cleaner, collect dirt and dust usually in a arranged in the cleaning robot dust collector.
  • the space available on the cleaning robot is usually limited, so that the space provided for the dust collector is limited.
  • the cleaning robot can be designed so that it automatically starts to pick up the dust, the dust collection station and / or automatically connects to the dust collection station.
  • the dust collecting station can be designed as a dust collecting station connected to a charging station or as a dust collecting station separate from a charging station.
  • the filter assembly is configured to guide the air along a flow path extending from the air inlet passage via the air inlet region through the flat filter into the air outlet region and the air outlet channel.
  • the incoming air thus passes, for example, via the air inlet opening and the air inlet channel to the air inlet region and is guided from there through the flat filter to the air outlet region. From the air outlet region, the filtered air is then led out of the filter arrangement via the air outlet channel and the air outlet opening.
  • the flat filter extends in the axial direction over at least 70% of the axial extent of at least one of the air inlet opening and the air outlet opening. Further preferably, the flat filter extends in the axial direction over at least 80% of the axial extent of at least one of the air inlet opening and the air outlet opening.
  • the flat filter extends in the axial direction over at least 60% of the axial extent of the air inlet opening and over at least 60% of the axial extent of the air outlet opening. Further preferably, the flat filter extends in the axial direction over at least 80% of the axial extent of the air inlet opening and over at least 80% of the axial extent of the air outlet opening. If both the air inlet opening and the air outlet opening viewed in the axial direction is arranged at the height of the flat filter, this results in a particularly space-saving variant.
  • the flat filter and at least one of the air inlet opening and the air outlet opening are arranged in an axial region of the filter arrangement which lies within the axial extent of the filter frame.
  • the air inlet opening, the air outlet opening and the flat filter are arranged in an axial region of the filter arrangement, which lies within the axial extent of the filter frame. Relative to the axial direction of the flat filter, the air inlet opening, the Air outlet opening and the flat filter arranged substantially at the same height.
  • At least one of the air inlet passage and the air outlet passage is disposed in an axial region of the filter assembly that is within the axial extent of the filter frame.
  • the air inlet duct and the air outlet duct can be accommodated within the axial area of the filter frame. In this way, the entire fluid distribution of the air streams within the filter assembly can be performed within the narrow axial range dictated by the filter frame.
  • the axial extent of the filter frame is less than one third of the diameter of the flat filter.
  • the filter frame with the flat filter can therefore be built so that little space is required in the axial direction.
  • the air inlet opening extends in the axial direction over at least 80% of the axial extent of the air outlet opening.
  • the air inlet opening and the air outlet opening are thus arranged, for example, substantially at the same height, so there is a substantial overlap between the air inlet opening and the air outlet opening in relation to the axial extent.
  • the cross-sectional area of the air inlet opening differs by less than 20% from the cross-sectional area of the air outlet opening.
  • the cross-section with which air enters the filter arrangement thus corresponds essentially to the cross-section with which the air exits the filter arrangement. This allows a uniform flow through the filter assembly.
  • the centers of the air inlet opening and the air outlet opening in the axial direction are substantially at the same axial height of the filter assembly.
  • the center of the air inlet opening relative to the center of the air outlet opening has an offset in the axial direction of less than 1 cm.
  • the offset in the axial direction is less than 0.6 cm.
  • the offset in the axial direction is less than 0.4 cm.
  • the flat filter and at least one of the air inlet opening and the air outlet opening are arranged in or on the filter frame.
  • the air inlet opening, the air outlet opening and the flat filter are arranged in or on the filter frame.
  • the filter frame is a central component of the filter arrangement, wherein the filter frame is designed in particular for holding the flat filter and for the flow guidance of the inflowing and the outflowing air flow.
  • At least a part of the wall of the air inlet channel is formed by the filter frame.
  • at least part of the wall of the air outlet channel is formed by the filter frame. Parts of the filter frame thus also serve as a wall for at least one of the air inlet duct and the air outlet duct.
  • At least one of the air inlet opening and the air outlet opening is arranged laterally on the filter arrangement.
  • at least one of the air inlet opening and the air outlet opening is arranged laterally on the filter frame.
  • the air inlet opening is arranged laterally on the filter frame, while the air outlet opening can be located, for example, in the upper or lower region of the filter arrangement.
  • the air outlet opening for example, be arranged laterally on the filter frame, while the air inlet opening at a another location of the filter assembly is provided.
  • both the air inlet opening and the air outlet opening are arranged laterally on the filter frame, so that both the air supply and the air discharge can take place from the side of the filter arrangement.
  • the air inlet opening and the air outlet opening are both arranged in a common plane laterally on the filter arrangement.
  • the sealing of the air supply and air discharge of the filter assembly is significantly simplified.
  • the inlet opening and the outlet opening are pressed against seals, for example.
  • both openings are arranged in one plane, it is only necessary to apply a force in one direction, which is therefore easier to produce.
  • the air inlet opening and the air outlet opening are provided with a common seal.
  • fewer components are needed, and the assembly is simplified.
  • an airflow flowing into the air inlet opening has a dominant flow component in a direction perpendicular to the axial direction.
  • the flow direction of an air stream entering the air inlet duct is directed substantially perpendicular to the axial direction.
  • an air flow flowing out of the air outlet opening has a dominant flow component in a direction perpendicular to the axial direction.
  • the purified air stream emerging laterally from the filter arrangement may, for example, be directed perpendicular to the axial direction or obliquely to the axial direction.
  • the flow direction of an air flow emerging from the air outlet channel is directed substantially perpendicular to the axial direction.
  • an airflow flowing into the air inlet opening is directed substantially opposite to a outflowing out of the air outlet opening Airflow.
  • the filter assembly comprises a filter housing, wherein the filter frame divides the filter housing into an upper housing volume and a lower housing volume.
  • the filter frame is disposed in the upper half of the filter housing.
  • the lower housing volume of the filter assembly is formed as Staubabscheideraum.
  • a separation of dust and dirt can be carried out.
  • the separation of dust and dirt is preferably carried out before the air filtering in order to minimize the burden on the air filter. The preceding dust and dirt separation ensures that the flat filter only comparatively rarely needs to be cleaned or replaced.
  • the lower housing volume of the filter housing comprises a dust collector.
  • the dust collector is removably attached to the filter frame. Inside the dust collector dust and dirt can be collected.
  • the dust collector is designed as a removable dust collector, so that it can be emptied from time to time. Due to the compact design of the filter assembly, a dust collector with a larger volume can be provided.
  • the wall of the air inlet channel is designed to direct an inflowing air flow in the direction of the lower housing volume. This results in a flow path in which the incoming air is first directed down to the lower housing volume, where a first deposition of dirt and dust occurs. Subsequently, the air flow over a large area from bottom to top is passed through the flat filter to further filter the air flow. From the upper housing volume, the air is then led to the outside via the air outlet duct and the air outlet opening.
  • a part of the wall of the air inlet channel is designed as a guide surface, which is designed to deflect an inflowing air flow in the direction of the lower housing volume.
  • dust is separated in the lower housing volume of the filter housing. Due to the preferably sharp deflection of the incoming air flow together with the gravitational effect entrained by the air flow dust and dirt particles in the lower housing volume of the filter assembly are deposited before the pre-cleaned air flow flows from bottom to top through the flat filter.
  • the flat filter preferably has an air inlet surface and an air outlet surface arranged parallel to the air inlet surface.
  • the flat filter is arranged in the filter arrangement substantially in the horizontal direction.
  • the flat filter is traversed in the axial direction from the air inlet region to the air outlet area with air.
  • the flat filter comprises a filter material, wherein the filter material is one of the following: foam, nonwoven, pleated filter material.
  • the flat filter is designed as a folded filter.
  • the flat filter is designed as a multilayer filter structure with at least two different filter layers. In this way, different filters for different functionalities can be provided.
  • the flat filter comprises at least one of the following: a HEPA filter, an activated carbon filter, an odor filter.
  • an additional coarse dirt filter is arranged on the air inlet side of the flat filter.
  • This coarse dirt filter is used, for example, to remove lint and coarse dirt from the air flow before the air flow flows through the flat filter. As a result, the dust and dirt loading of the flat filter can be kept low.
  • the coarse dirt filter is preferably designed as a replaceable filter.
  • the flat filter is circular or elliptical or rectangular.
  • a part of a filter surface of the flat filter is formed as an area free from the filter material, wherein at least one of the air inlet passage and the air outlet passage is arranged in the area free of the filter material.
  • the flat filter is designed as a circular filter, wherein a sector of the flat filter is formed as a free area of the filter material, wherein in the filter material free sector at least one of the air inlet channel and the air outlet channel is arranged.
  • the filter material-free sector preferably extends over an angle of more than 10 °, more preferably over more than 20 °, more preferably over more than 30 °.
  • the filter material-free sector preferably extends over an angle of less than 60 °, more preferably over an angle of less than 50 °, more preferably over an angle of less than 40 °.
  • the flat filter is designed as a circular filter, wherein a sector of the flat filter is formed as a filter material-free area, wherein in the filter material-free sector at least one of the air inlet channel and the air outlet channel is arranged.
  • the flat filter in the filter frame is arranged laterally offset from the center of the filter frame, so that in addition to the flat filter, a region is formed in which at least one of the air inlet duct and the air outlet duct is arranged.
  • a region is formed in which at least one of the air inlet duct and the air outlet duct is arranged.
  • the cleaning robot comprises a receptacle for the filter assembly.
  • the cleaning robot has seals arranged laterally in the receptacle for forming substantially airtight connections between a supply channel on the side of the cleaning robot and the air inlet channel and between the air outlet channel and a discharge channel on the side of the cleaning robot.
  • the filter assembly 1 is designed to remove dirt and dust particles from an air laden with dirt and dust, for example from the suction air of a vacuum cleaner.
  • the filter assembly 1 comprises a filter frame 2 which is adapted to support a flat filter 3 for filtering the suction air.
  • the flat filter 3 is a folded filter preferably made of folded filter paper with a plurality of filter pleats extending outwardly from a central region 4.
  • an air inlet channel 5 and an air outlet channel 6 are arranged in addition to the flat filter 3.
  • a sector-shaped region 7 is recessed.
  • the air inlet channel 5 Within the sector-shaped area 7 of the air inlet channel 5 is arranged, which can be fed from an air inlet opening 8 in the direction of the arrow 9 with dirt-laden air.
  • the air inlet channel 5 is fluidly connected to the lower portion of the filter assembly 1.
  • a curved guide surface 11 At the viewed in the axial direction 10 upper side of the air inlet channel 5, a curved guide surface 11 is arranged, which directs the incoming air down to the dust collector 12 out.
  • the terms “top” and “bottom” are to be understood that dirt and dust due to gravity in the lower part of the filter assembly 1, so collected in the dust collection container 12 during normal operation of the filter assembly.
  • the air inlet opening 8 is arranged together with an air outlet opening 13 of the air outlet channel 6 in a side wall of the filter frame 2, so that the air inlet opening 8 and the air outlet opening 13 are arranged in a common plane laterally on the filter assembly 1. Viewed in the axial direction 10, the air inlet opening 8 is at the same height as the air outlet opening 13. Purified air can be guided from the upper region of the filter arrangement 1 to the air outlet opening 13 via the air outlet channel 6 and exit there in the direction of the arrow 14. In this case, the air outlet channel 6 has a curved lower guide surface 15 for guiding the air.
  • a dust collecting container 12 is arranged, which can be connected, for example, with a connection region 16 on the underside of the filter frame 2.
  • locking lugs 17 may be attached or formed, which engage in recesses on the connection portion 16 and form a bayonet lock together with these recesses.
  • the dust collector 12 encloses the lower housing volume of the filter assembly 1.
  • a lid 18 is placed, which closes the upper housing volume.
  • the lid 18 is provided with a handle handle 19, with which the entire filter assembly 1 can be removed from the vacuum cleaner.
  • lateral locking tabs 20 are integrally formed or mounted, which can engage in corresponding recesses on the side of the vacuum cleaner and lock the filter assembly 1.
  • the flow path of the air through the filter arrangement 1 will be described below.
  • the dust-laden air is supplied through the air inlet opening 8 in the direction of the arrow 9 to the air inlet channel 5 and deflected by the curved guide surface 11 comparatively sharp down to the dust collector 12 out. Due to gravity, at least a portion of the entrained by the air flow dirt and dust particles in the dust collector 12 is deposited, with dirt and dust accumulate at the bottom of the dust collector 12. After the impact on the bottom of the dust collecting container 12, the incoming air is diverted upward. The air enters at the bottom of the flat filter 3 and flows through the flat filter 3 in the axial direction 10 from bottom to top, wherein the purified air exits at the top of the flat filter 3.
  • the air flow Since the coarse dirt carried by the air flow is deposited at the bottom of the dust collection container 12 before flowing through the flat filter 3, the air flow only carries a certain residual amount of dust and dirt with it. These dust and dirt particles are filtered away by the flat filter 3.
  • the flat filter 3 is flowed through in the direction from bottom to top uniformly and over a large area. This has the advantage that a large amount of air can be filtered at low speed, so that the pressure drop across the flat filter 3 is low. Due to the slow large-scale flow through the filter material, the noise in the filter assembly 1 is kept low. Because of the preceding deposition of coarse dirt accumulates at the bottom of the flat filter 3 over time not too much dust, so that the bottom of the flat filter 3 only comparatively rarely needs to be cleaned.
  • the purified air exits at the top of the flat filter 3 and passes over the above the flat filter. 3
  • the purified air flow is guided by means of the curved guide surface 15 to the air outlet opening 13 and exits there in the direction of the arrow 14.
  • the filter arrangement 1 shown both the supply of polluted air and the discharge of purified air from the side at the level of the filter frame 2.
  • the air inlet opening 8 with the adjoining air inlet duct 5, the air outlet opening 13 with the air outlet 6 and the flat filter. 3 When viewed in the axial direction 10, all are arranged within a comparatively small axial section within the filter frame 2. In this way, in particular in the axial direction 10, a space-saving design of the filter arrangement 1 is achieved.
  • the advantage of this is that for a given height of the filter assembly 1 due to the small footprint of the filter frame 2 accordingly more space for the dust collector 12 can be provided. Especially with cleaning robots, the available height for the filter assembly 1 is limited because of the driving behavior.
  • the available installation space can be used as much as possible for the dust collecting container 12 so that it can absorb comparatively much dust and dirt before an emptying is necessary.
  • the compact design of the filter assembly 1 is achieved by a multiple deflection of the air streams.
  • the air entering the filter assembly 1 has a dominant component perpendicular to the axial direction 10
  • the purified air is diverted through the lid 18 and guided through the air outlet channel 6, wherein the exiting air exits laterally and thus has a dominant flow component perpendicular to the axial direction 10.
  • both the supply and the discharge of the air takes place from the side at the height of the flat filter 3.
  • only one of the air inlet opening 8 and the air outlet opening 13 at the height of the flat filter 3 may be provided, whereas the other Air opening could be arranged for example at the lower end or at the upper end of the filter assembly 1.
  • Another advantage of the filter assembly 1 is that the air inlet opening 8 and the air outlet opening 13 are arranged on one side of the filter frame 2 in a common plane.
  • the fluidic contacting of the air inlet channel 5 and the air outlet channel 6 is facilitated by the vacuum cleaner.
  • a larger common sealing element can be used to seal the air inlet opening 8 and the air outlet opening 13 with respect to the corresponding channels on the vacuum cleaner side instead of two individual sealing elements.
  • FIGS. 1 and 2 shown filter assembly 1 Another peculiarity of the flow path in the in FIGS. 1 and 2 shown filter assembly 1 is that the direction indicated by the arrows 9 and 14 inflow and outflow are oppositely oriented to each other. Both the inflow direction and the outflow direction are oriented perpendicular to the axial direction 10 of the filter assembly 1.
  • the inflowing air flow and / or the outflowing air flow could each be oriented obliquely to the axial direction 10, wherein also in these cases, the dominant component of the inflow and outflow is oriented perpendicular to the axial direction 10, in addition due to the oblique coupling a comparatively smaller component in the axial direction 10 added.
  • FIG. 3 is a front view of the filter frame 2 is shown.
  • the connection area 16 for the dust collector 12 is shown.
  • the respective centers of the air inlet opening 8 and the air outlet opening 13 are mounted in the axial direction 10 at the same height.
  • the advantage of a compact design can also be achieved if the air inlet opening 8 and the air outlet opening 13 are arranged in the axial direction 10 with a certain height offset 21 to each other.
  • This possible height offset 21 is shown by means of a double arrow. As long as the height offset 21 is below 1 cm, more preferably below 4 mm, the overall height of the filter frame 2 is still low enough to achieve the advantages of the invention.
  • FIG. 4 shows a view of the underside of the filter frame 2.
  • the flat filter 3 can be seen from the air inlet surface.
  • folded paper is used as the filter material for the flat filter 3, the filter folds extending from the central area 4 to the outside.
  • a sector-shaped area 7 is provided in the flat filter 3, in which there is no filter material.
  • the air flowing in the direction of the arrow 9 passes through the air inlet opening 8 in the air inlet channel 5 and is guided by the guide surface 11 in the direction of the bottom of the dust collecting container 12.
  • the dust collecting container 12 can be detachably fastened, for example by means of a bayonet closure, to the connection region 16 of the filter frame 2.
  • the air outlet channel 6 can be seen with the air outlet opening 13, from which the air flows in the direction of the arrow 14.
  • the space provided in the filter frame 2 flat filter 3 may be circular, elliptical or rectangular.
  • a circular design is especially suitable for folded filter material.
  • the folds are arranged around the central region 4 and lie directly against the sector-shaped region 7.
  • filter materials for example, fleece or foam.
  • the flat filter 3 may be sandwiched, and various filter materials may be combined. In this way it is possible, for example, different filter layers for the realization of different properties to combine with each other.
  • the flat filter may comprise, for example, a HEPA filter layer, an activated carbon filter layer or an odor filter layer.
  • This protective filter located upstream of the flat filter 3 acts as a coarse dirt filter and prevents, for example, wool mice and lint from getting to the flat filter 3. Through this upstream protection filter, the cleaning of the flat filter 3 is simplified because coarse dirt does not attach to the filter material of the flat filter 3.
  • FIG. 5 the filter frame 2 is shown with the flat filter 3 in plan view, wherein the filter folds of the flat filter 3 extending radially outwardly from the central region 4 can be seen.
  • FIG. 5 again the sector-shaped area 7 for the air inlet channel 5 can be seen, followed by the filter folds of the flat filter 3 on both sides.
  • FIG. 5 to see that the entire flat filter 3 is shifted within the filter frame 2 relative to the center of the filter frame 2 by a certain lateral offset 22 to the left to make room for the air outlet channel 6 on the right side.
  • the central region 4 of the flat filter 3 is therefore not located in the middle of the filter frame 2, but is laterally offset from the center of the filter frame 2.
  • This eccentric arrangement of the flat filter 3 creates space for the air outlet channel 6, which discharges the air purified after flowing through the flat filter 3 and discharges it through the air outlet opening 13 in the direction of the arrow 14.
  • the sector-shaped region 7 preferably extends over an angular range of more than 10 °, more preferably over an angular range of more than 20 ° and more preferably over an angular range of more than 30 °.
  • the sector-shaped region 7 preferably extends over an angular range of less than 60 °, more preferably less than 50 °, more preferably less than 40 °.
  • FIG. 6 shows a cross section through a cleaning robot 23, in which a filter assembly 1 of the in the FIGS. 1 to 5 shown type is used.
  • the filter assembly 1 is particularly suitable for use in a cleaning robot 23, because it provides a dust collector 12 with sufficiently large volume despite the low design.
  • the application of the described filter arrangement 1 is not limited to cleaning robots, but the filter assembly can also be used in other environments, for example in conventional vacuum cleaners.
  • the cleaning robot 23 has a receptacle 24 for the filter assembly 1, in which the filter assembly 1 is inserted from above and then locked, for example by pivoting the handle handle 19.
  • the cleaning robot 23 is equipped with a seal for the air inlet opening 8 and the air outlet opening 13 of the filter arrangement 1.
  • FIG. 6 shows a cross section through a cleaning robot 23, in which a filter assembly 1 of the in the FIGS. 1 to 5 shown type is used.
  • the filter assembly 1 is particularly suitable for use in a cleaning robot 23, because it provides a dust collector 12 with sufficiently large volume despite the low
  • a connection between the air supply channel 25 of the cleaning robot 23 and the air inlet channel 5 of the filter assembly 1 is made via the air inlet opening 8.
  • the incoming air is directed according to the arrow 26 through the guide surface 11 to the bottom of the dust collection container 12, wherein coarse dirt is deposited.
  • the air flow is deflected at the bottom of the dust collection container 12 and then flows through the flat filter 3 in the axial direction 10 from bottom to top.
  • the purified air is supplied to an air discharge channel of the cleaning robot 23, but in FIG. 6 not shown. The purified air is then discharged to the outside via this air discharge channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP18170546.8A 2017-05-29 2018-05-03 Dispositif filtrant doté d'un filtre plat Active EP3417751B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017208966.0A DE102017208966B4 (de) 2017-05-29 2017-05-29 Filteranordnung mit einem Flachfilter

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EP3417751A1 true EP3417751A1 (fr) 2018-12-26
EP3417751B1 EP3417751B1 (fr) 2023-12-20

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020109656A1 (de) 2020-04-07 2021-10-07 Alfred Kärcher SE & Co. KG Filtereinheit für eine Reinigungsmaschine, Boden-Reinigungsmaschine und Verfahren zum Betreiben einer Boden-Reinigungsmaschine
BE1029277B1 (de) * 2021-04-06 2022-11-04 Miele & Cie Staubsammeleinheit für Saugroboter und Saugroboter

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EP0206182A1 (fr) * 1985-06-15 1986-12-30 Kabushiki Kaisha Tsuchiya Seisakusho Filtre à fluide avec un milieu filtrant plié
WO2003068043A1 (fr) * 2002-02-11 2003-08-21 Dyson Ltd Boitier de filtre
US20050138763A1 (en) 2003-08-05 2005-06-30 Mark Tanner Cyclonic vacuum cleaner
US20090300872A1 (en) 2008-06-05 2009-12-10 Bissell Homecare, Inc. Cyclonic vacuum cleaner with improved filter cartridge
EP2229855A2 (fr) * 2009-03-19 2010-09-22 Bissell Homecare, Inc. Aspirateur et filtres associés
EP2636351A1 (fr) * 2012-03-08 2013-09-11 Lg Electronics Inc. Robot nettoyeur
DE102015105059A1 (de) 2015-04-01 2016-10-06 Vorwerk & Co. Interholding Gmbh Filteranordnung, Haushaltsgerät mit einer Filteranordnung und Verfahren zum Wechseln eines Filters
US20170020355A1 (en) 2013-12-20 2017-01-26 Aktiebolaget Electrolux Dust container
US20170332865A1 (en) * 2016-05-20 2017-11-23 Lg Electronics Inc. Autonomous cleaner

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US3235633A (en) * 1962-04-02 1966-02-15 Gen Motors Corp Method of molding filter end caps
WO2014094834A1 (fr) * 2012-12-18 2014-06-26 Alfred Kärcher Gmbh & Co. Kg Appareil de nettoyage de sol automoteur et autoguidé

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EP0206182A1 (fr) * 1985-06-15 1986-12-30 Kabushiki Kaisha Tsuchiya Seisakusho Filtre à fluide avec un milieu filtrant plié
US4710297A (en) 1985-06-15 1987-12-01 Kabushiki Kaisha Tsuchiya Seisakusho Fluid filter with pleated filter medium
WO2003068043A1 (fr) * 2002-02-11 2003-08-21 Dyson Ltd Boitier de filtre
EP1474025B1 (fr) 2002-02-11 2006-11-29 Dyson Technology Limited Boitier de filtre
US20050138763A1 (en) 2003-08-05 2005-06-30 Mark Tanner Cyclonic vacuum cleaner
US20090300872A1 (en) 2008-06-05 2009-12-10 Bissell Homecare, Inc. Cyclonic vacuum cleaner with improved filter cartridge
EP2229855A2 (fr) * 2009-03-19 2010-09-22 Bissell Homecare, Inc. Aspirateur et filtres associés
US8424153B2 (en) 2009-03-19 2013-04-23 Bissell Homecare, Inc. Vacuum cleaner and filters therefor
EP2636351A1 (fr) * 2012-03-08 2013-09-11 Lg Electronics Inc. Robot nettoyeur
US20170020355A1 (en) 2013-12-20 2017-01-26 Aktiebolaget Electrolux Dust container
DE102015105059A1 (de) 2015-04-01 2016-10-06 Vorwerk & Co. Interholding Gmbh Filteranordnung, Haushaltsgerät mit einer Filteranordnung und Verfahren zum Wechseln eines Filters
US20170332865A1 (en) * 2016-05-20 2017-11-23 Lg Electronics Inc. Autonomous cleaner

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DE102017208966A1 (de) 2018-11-29
EP3417751B1 (fr) 2023-12-20

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