EP3906831B1 - Hand-guided cyclone vacuum cleaner - Google Patents

Hand-guided cyclone vacuum cleaner Download PDF

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Publication number
EP3906831B1
EP3906831B1 EP21169765.1A EP21169765A EP3906831B1 EP 3906831 B1 EP3906831 B1 EP 3906831B1 EP 21169765 A EP21169765 A EP 21169765A EP 3906831 B1 EP3906831 B1 EP 3906831B1
Authority
EP
European Patent Office
Prior art keywords
filter
filter stage
drive unit
vacuum cleaner
air flow
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
EP21169765.1A
Other languages
German (de)
French (fr)
Other versions
EP3906831A1 (en
Inventor
Stefan Kreimeyer
Anna-Lena Cordes
Michael Poetting
Waldemar Kraus
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.)
Miele und Cie KG
Original Assignee
Miele und Cie 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
Priority claimed from BE20215006A external-priority patent/BE1028991B1/en
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3906831A1 publication Critical patent/EP3906831A1/en
Application granted granted Critical
Publication of EP3906831B1 publication Critical patent/EP3906831B1/en
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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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/24—Hand-supported suction cleaners
    • 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
    • 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
    • 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
    • A47L9/127—Dry filters tube- or sleeve-shaped
    • 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
    • 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
    • A47L9/20—Means for cleaning 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
    • A47L9/22—Mountings for motor fan assemblies

Definitions

  • the invention relates to a hand-held cyclone vacuum cleaner, which is referred to below as a vacuum cleaner for the sake of simplicity.
  • the invention relates to a vacuum cleaner which has a separating container for receiving suction material and a drive unit container which has a drive unit which is designed to generate a suction air flow during operation.
  • Such a vacuum cleaner is from the WO 2017/046 559 A1 known.
  • the vacuum cleaner has two filter stages, which are implemented using cyclone technology, so that they are designed as a multi-cyclone.
  • the vacuum cleaner also has a third filter stage, which is connected downstream of the multi-cyclone in terms of flow technology and is built around an encapsulated radial fan. An axial outflow from the fan is directed through an exhaust air filter.
  • the flow to the various filter stages requires a relatively large installation space.
  • a hand-held cyclone vacuum cleaner for cleaning and maintaining floor surfaces has a drive unit for generating a negative pressure for collecting suction material by means of a suction air flow.
  • This vacuum cleaner also has a separation unit for separating suction material from the suction air flow, the separation unit comprising a drive unit for generating a suction air flow.
  • the separation unit also has a first filter stage in the form of a cyclone, a second filter stage and a third filter stage.
  • the drive unit in this vacuum cleaner is arranged downstream in the suction air flow of the second filter stage and upstream of the third filter stage in the suction air flow in a drive unit housing.
  • the US 2017/290479 A1 discloses a hand-held cyclone separator with a third filter stage, which is arranged between the separator and the drive unit.
  • the suction air flow generated by the drive unit flows through the drive unit after passing the third filter stage.
  • the WO 2008/070965 A1 , WO 2020/168417 A1 and the EP 2 581 012 A1 reveal hand-held vacuum cleaners whose drive units are only passed through by the suction air flow.
  • the invention therefore addresses the problem of providing a hand-held cyclone vacuum cleaner that has several filter stages that are implemented in a compact installation space.
  • the filter stages should be easier for the user to access.
  • simple, automatic cleaning of filter stages should be possible.
  • a hand-held cyclone vacuum cleaner with the features of claim 1. Because the generated suction air flow first passes the first filter stage, then the second filter stage and finally a further filter stage, the drive unit being flowed around by the suction air flow generated during operation of the drive unit, the third filter stage being arranged behind the further filter stage in terms of flow and having an exhaust air filter element, a hand-held cyclone vacuum cleaner can be provided which has several filter stages in a compact installation space.
  • the drive unit housing in which the drive unit is integrated is flowed around by the generated suction air flow. Installation space is saved because the drive unit located in the drive unit housing can be flowed around by the suction air flow.
  • the drive unit housing in which the drive unit is arranged is advantageously arranged downstream of the second filter stage and upstream of the third filter stage.
  • the additional filter stage which is arranged fluidically upstream of the third filter stage, allows the installation space required for the third filter stage to be significantly reduced.
  • the invention therefore relates to a hand-held cyclone vacuum cleaner, having a separation unit for collecting suction material, which has a drive unit for generating a suction air flow, a first filter stage, a second filter stage and a third filter stage; the drive unit is arranged downstream of the second filter stage and upstream of the third filter stage in a drive unit housing, the drive unit being surrounded by the suction air flow generated when the drive unit is in operation.
  • the drive unit is arranged spatially between the second filter stage and the additional filter stage in a drive unit housing.
  • the invention provides a vacuum cleaner in a compact design that has several filter stages.
  • the implementation of several filter stages enables a particularly effective separation unit with a particularly selective first filter stage.
  • all filter stages of the separation unit that require periodic cleaning are arranged so that they are easily accessible for the user.
  • the term "hand-held" means that the vacuum cleaner is operated by hand by the user.
  • the vacuum cleaner preferably also has a handle.
  • the handle is preferably firmly connected to the separation unit or can be connected.
  • cyclone vacuum cleaner refers to a vacuum cleaner that is bagless and in which the suction air flow in the separation unit forms a vortex current, which functions to separate dust and dirt particles from the suction air flow under the influence of gravity.
  • bagless means that the suction material in the vacuum cleaner is collected directly in the separation unit or separated from the suction air flow without a bag or similar replaceable filter medium being arranged in the latter to collect suction material, so that the user does not remove a bag or similar from the separation container to empty the suction material from the separation unit.
  • the vacuum cleaner has several filter media that prevent suction material from reaching the drive unit arranged in the drive unit housing.
  • the drive unit is arranged such that an inflow direction of the suction air flow into the drive unit is opposite to a flow direction of the suction air flow from the second filter stage to the further filter stage.
  • the suction air flow generated therefore also changes direction by 180° during its path within the vacuum cleaner.
  • the drive unit which is preferably designed as a fan, is preferably rotated by 180° with respect to a suction pipe of the vacuum cleaner, into which the suction air flow enters the vacuum cleaner before entering the filter stages. This means that a flow direction of the suction air flow flowing into the suction pipe is opposite to a further flow direction of the suction air flow entering the drive unit.
  • the first filter stage has a cyclone generated by the drive unit during operation
  • the second filter stage has a pre-filter
  • the further filter stage has a central filter.
  • the central filter has a storage medium designed to store dust. It is preferably designed as a fine filter.
  • the pre-filter essentially serves as filter protection for the central filter and is essentially designed to prevent coarse particles from entering a space between the second filter stage and the further filter stage.
  • the pre-filter and the central filter are arranged axially along the longitudinal axis of the separation unit.
  • the separation unit extends along a longitudinal axis.
  • the pre-filter and the central filter each extend parallel to the longitudinal axis.
  • the first filter stage, the second filter stage and the further filter stage are arranged one behind the other in the specified order. This means that that the generated suction air flow first passes the first filter stage, then the second filter stage and finally the further filter stage.
  • the first filter stage further comprises an inlet slot which is arranged such that during operation the suction air flow from the inlet slot is guided tangentially to an inner wall of the separating vessel, so that a cyclone forms in the first filter stage during operation.
  • the cyclone vortex forms in the first filter stage during operation, so that particles are separated with a certain pressure loss and a certain separation grain.
  • the first filter stage preferably comprises the inlet slot, the inner wall and a dip tube.
  • the dip tube is preferably firmly connected to the inner wall and arranged on a side of the inner wall which faces away from the second filter stage.
  • the inlet slot preferably has a rectangular cross-section.
  • the vacuum cleaner preferably has the suction pipe from which the suction air stream flows into the inlet slot during operation.
  • the suction pipe preferably has a circular cross-section.
  • the suction pipe can preferably be connected to a floor nozzle and/or an extension pipe.
  • the suction pipe has a longitudinal axis which lies at the center of its circular cross-section and extends along the entire length of the suction pipe.
  • the second filter stage preferably has a pre-filter.
  • the pre-filter is preferably made of a fabric gauze, a plastic sieve, a punched grid or a metal gauze.
  • the second filter stage preferably also has an inner tube which is connected to the pre-filter.
  • the inner tube is preferably arranged behind the pre-filter and before the third filter stage in terms of flow.
  • the pre-filter is preferably arranged between the inner wall and the inner tube.
  • the central filter is a cylindrical filter that is sealed to the drive unit and to a separating unit outer housing.
  • the central filter preferably has a storage medium that is designed to store dust. It is preferably designed as a fine filter.
  • the pre-filter essentially serves as filter protection for the central filter and is essentially designed to prevent coarse particles from entering a space between the second filter stage and the further filter stage.
  • the further filter stage is arranged in such a way that the suction air flow generated during operation flows axially into the drive unit. This enables a compact design of the vacuum cleaner.
  • the second filter stage can be removed from the separation unit in a removal direction that is opposite to a further Removal direction in which the further filter stage can be removed from the separation unit. Due to the parallel arrangement of the second filter stage and the further filter stage, both can be removed independently of one another.
  • the pre-filter is detachably connected to the inner wall of the first filter stage, which is connected to the dip tube, so that the second filter stage can be removed from the separation container by removing the dip tube.
  • the vacuum cleaner has a third filter stage, which is arranged fluidically behind the other filter stage and which has an exhaust air filter element.
  • the exhaust air filter element is preferably designed as a filter or a flap in an outer housing of the separation unit.
  • the separation unit has a drive unit container and a separation container, wherein the drive unit container contains the drive unit housing, the drive unit and the further filter stage and the separation container has the first and the second filter stage.
  • the drive unit container and the separation container are arranged adjacent to one another and extend along parallel longitudinal axes.
  • the separation container and the drive unit container are non-detachably connected to one another.
  • the drive unit housing is surrounded by a circular segment-shaped flow cross-section through which the suction air flow flows during operation before it reaches the further filter stage.
  • the circular segment-shaped flow cross-section can be partially interrupted by functional geometry(s).
  • the drive unit housing, the flow cross-section and the central filter are designed and arranged in such a way that the suction air flow flows around the further filter stage during operation.
  • a suction pipe diameter of the suction pipe is substantially equal to a cross-sectional area of the inlet slot with a rectangular cross-section.
  • the suction pipe diameter is substantially equal to a filter stage diameter of the inner pipe of the second filter stage and/or equal to a diameter of the pre-filter.
  • An area of the flow cross-section between the drive unit housing and the drive unit container outer housing is preferably approximately equal to the area of the suction pipe diameter.
  • the diameters refer in particular to inner diameters.
  • the diameter of the suction pipe is in the range of 20 to 40 mm, preferably 25 to 35 mm.
  • the first filter stage has the following dimensions:
  • the cyclone has a diameter in the range of 90 to 100 mm
  • a height of the Cyclone which is defined as a dimension between the inlet slot and the inner wall, is preferably in the range of 80 to 140 mm, preferably 110 to 130 mm.
  • a height of the dip tube, which represents a longitudinal extension of the dip tube starting from the inner wall, is preferably in the range of 20 - 60 mm, more preferably 30 to 50 mm
  • a diameter of the dip tube is preferably 35 - 60 mm, more preferably 40 to 50 mm.
  • a width of the inlet slot is preferably 14 - 30 mm, preferably 18 to 26, while a height of the inlet slot is preferably 20 - 52 mm, preferably 30 to 40 mm, wherein the height and width of the inlet slot define a cross section of the inlet slot.
  • the drive unit container is connected to the handle.
  • the drive unit container In a normal operating position, the drive unit container is preferably located at a rear or rear end of the vacuum cleaner, which means that it is closer to the user's hand and further away from the surface to be vacuumed than the separation container.
  • the vacuum cleaner is preferably a battery-operated vacuum cleaner.
  • the vacuum cleaner has a battery and is designed to be operated using the battery as a power source.
  • the battery can be connected to the suction container and/or the device body, preferably the device body.
  • the vacuum cleaner can have an extension tube that can be connected to the suction tube. Furthermore, the vacuum cleaner can have a floor nozzle that can be connected to the suction tube and the extension tube.
  • the drive unit is preferably designed as a fan.
  • a particularly advantageous embodiment provides that the first filter stage of the separation unit of the cyclone vacuum cleaner forms a longitudinal axis, wherein during operation of the drive unit the suction air flow forms a vortex flow around the longitudinal axis of the first filter stage, wherein the longitudinal axis of the first filter stage is aligned parallel to the longitudinal axis of a suction pipe.
  • the parallel alignment of the longitudinal axes of the first filter stage and the suction pipe are advantageous for the realization of a vacuum cleaner with a compact design.
  • the further filter stage has a central filter through which the generated suction air flow flows from the outside to the inside.
  • a central filter has a preferably cylindrical basic shape, wherein a filter medium, preferably pleated, is arranged along the cylinder shape and has a The inner area of the central filter is separated from the outer area of the central filter.
  • a mechanical cleaning device for removing dirt adhering to the filter medium of the central filter, the cleaning device having a cleaning axis rotating in the central filter to remove the adhering dirt, which is provided with pulse generators designed to apply pulses to the filter medium from the rotational movement of the cleaning axis to remove the adhering dirt.
  • a particularly preferred embodiment provides that the central filter is arranged in a separating tank outer housing, wherein the separating tank outer housing is provided with an opening that can be covered by a lid and through which the central filter can be removed from the separating tank outer housing for filter replacement and/or for filter cleaning and/or for emptying the separating tank outer housing, wherein the lid is provided with an actuating element via which the cleaning axis is actuated to loosen the adhering dirt in the central filter accommodated in the separating tank outer housing.
  • the central filter can be easily removed from the separating tank outer housing through the opening for replacement or manual cleaning.
  • the actuating element in the lid also enables simple, mechanical cleaning of the central filter without having to remove it from the separating tank.
  • the cleaning axis is simply rotated over the actuating element to loosen the adhering dirt. Cleaning the central filter without removing it is a simple hygiene concept, as direct contact with the dust is minimized. Furthermore, the performance of the vacuum cleaner in separating dirt is maintained for longer or restored with little time expenditure.
  • Fig.1 shows a partial cross-sectional view of a vacuum cleaner according to the invention.
  • the vacuum cleaner 100 has a separation unit 18 which has a separation container 3 and a drive unit container 2 which are permanently connected.
  • the separation container 3 is designed to separate and collect suction material, while the adjacent drive unit container 2 contains a drive unit 5 which is designed to generate a suction air flow 19.
  • the separation container 3 has a first filter stage 6 and a second filter stage 7, while the drive unit container 2 has a further filter stage 8.
  • the first filter stage 6 has a cyclone generated during operation, while the second filter stage 7 has a pre-filter and the further filter stage 8 has a central filter.
  • the first filter stage 6, the second filter stage 7 and the further filter stage 8 are arranged one behind the other in terms of flow in the order given.
  • the pre-filter and the central filter are arranged axially.
  • the first filter stage 6 has an inner wall 10 and a dip tube 17.
  • the drive unit container 2 has a drive unit container outer housing 12, into which the third filter stage 9 in the form of an exhaust air filter is optionally integrated.
  • the drive unit container 2 also has a drive unit housing 15, into which the drive unit 5 is installed.
  • the drive unit 5 generates a suction air flow 19, which is partially indicated by the arrows.
  • the suction air flow 19 passes through the first filter stage 6, where it hits the inner wall 10 and a cyclone is formed.
  • the coarse dirt is collected in the separator container 3 and the air of the suction air flow 19 flows back to the second filter stage 7.
  • the suction air flow 19 passes through the second filter stage 7, which is provided with a fabric gauze, a plastic sieve, a punched grid or a metal gauze. can be.
  • the suction air flow 19 then flows further inside the second filter stage 7 into a rear part of the vacuum cleaner 100.
  • the suction air flow 19 then flows around the drive unit housing 15, preferably over an annular cross-sectional area 28 ( Fig.7 ) is guided around the drive unit 5 encapsulated by the drive unit housing 15.
  • the annular cross-sectional area 28 ( Fig.7 ) can be partially derived from functional geometries 29 ( Fig.7 ) interrupted.
  • the annular cross-sectional area 28 ( Fig.7 ) can be between 180°-270° on the circumference of the drive unit housing 15.
  • the suction air flow 19 is then directed to the further filter stage 8 and flows around it.
  • the air of the suction air flow 19 is preferably guided by means of an air guide geometry, e.g.
  • the further filter stage 8 is a cylindrical filter which is sealed to the drive unit 5 and to the outside.
  • the further filter stage 8 can also be a filter assembly 30 ( Fig.10 ), consisting of a first frame element 31 ( Fig.10 ) with a central opening 32 ( Fig.10 ) and a sealing element 33 ( Fig.10 ) to the drive unit housing 15, a second frame element 34 ( Fig.10 ) and a filter medium 35 ( Fig.10 ), which is inserted between the two frame elements 31, 34 ( Fig.10 ) and can preferably be held in its shape without additional support elements.
  • the first frame element 31 ( Fig.10 ) can have different construction forms.
  • a one-piece construction form can consist entirely of a hard component, including the sealing element, or entirely of a soft component.
  • this first frame element 31 can be designed as a 2-component component, with a soft component area 36 ( Fig.10 ) the central opening 32 ( Fig.10 ) with the corresponding sealing element 33 ( Fig.10 ).
  • Another design could include a two-part version of the first frame element.
  • a soft component which forms the central opening with the corresponding sealing element, is inserted into a hard component and formed into a unit by clamping or locking.
  • Another two-part version could consist of a 2-component component, with the soft component area forming the central opening with the corresponding sealing element, which then forms a unit with an additional element by fastening.
  • a soft component which forms the central opening with the corresponding sealing element, is installed between two hard components.
  • the second frame element 34 contains the possibility of holding the filter medium 35 ( Fig.10 ), and a centrally arranged penetration geometry 37 ( Fig.10 ) for the cleaning axis 23 ( Fig.10 ), which is connected to the external actuating element 27 ( Fig.10 ) is also connected to a all-round collar 38 ( Fig.10 ), which is immersed in the separator tank outer housing 15.
  • the sealing element 33 Fig.10 ).
  • This sealing element 33 may be designed as a lip seal or H-shaped seal made of a rubber material or the like.
  • the second frame element 34 ( Fig.10 ) can be designed as a 2-component component, consisting of a hard component as a carrier part and a soft component on the front side facing the device, which also creates a seal with the drive unit housing 15.
  • the air of the suction air flow 19 flows through the further filter stage 8 and flows axially into the drive unit 5 on the inside. After passing through the further filter stage 8, the suction air flow 19 reaches a space defined by the drive unit housing 15, in which the drive unit 5 is located, and can exit from this space through the third filter stage 9 and thus leave the vacuum cleaner 100.
  • Fig.2 shows a perspective view of the Fig.1 shown vacuum cleaner 100.
  • the vacuum cleaner 100 has a handle 1 which is connected to the drive unit container 2. Furthermore, the vacuum cleaner 100 has a suction pipe 4 which can also optionally be connected to an extension pipe 11 or a floor nozzle (not shown).
  • the first filter stage 6 ( Fig.1 ) of the separation unit 18 ( Fig.1 ) of the cyclone vacuum cleaner 100 forms a longitudinal axis 20 ( Fig.1 ), whereby during operation of the drive unit 5 ( Fig.1 ) the suction air flow 19 ( Fig.1 ) an eddy current around the longitudinal axis 20 ( Fig.1 ) of the first filter stage 6 ( Fig.1 ), with the longitudinal axis 20 ( Fig.1 ) of the first filter stage 6 ( Fig.1 ) is aligned parallel to the longitudinal axis 21 of the suction pipe 21.
  • This parallel alignment of the longitudinal axes 20, 21 of the first filter stage 6 ( Fig.1 ) and the suction pipe 4 is advantageous for the realization of a vacuum cleaner 100 with a compact design.
  • the suction air flow 19 first flows through the extension pipe 11, passes the suction pipe 4, then flows from the suction pipe 4 into the separation container 3 and then from there into the drive unit container 2 and then leaves the vacuum cleaner 100.
  • Fig.3 shows a cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line III-III.
  • the suction pipe 4 is arranged in front of the first filter stage (not shown) and has a circular cross-section with a suction pipe diameter D.
  • Fig.4 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line IV-IV.
  • the suction pipe 4 is connected to the separating container 3 via an inlet slot 14, which runs tangentially into the latter and the first filter stage 6.
  • the suction air flow 19 from the suction pipe 4 is directed tangentially to the inner wall (not shown) of the separating container 3, so that a cyclone (not shown) is formed in the first filter stage 6.
  • Fig.5 shows another partial cross-sectional view of the Fig.2 shown vacuum cleaner 100 through the inlet slot 14.
  • the inlet slot 14 has a rectangular cross-section with a width b and a height h.
  • the rectangular cross-section has an area which is approximately equal to the area of the in Fig.3 shown intake manifold diameter.
  • Fig.6 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line VI-VI.
  • the pre-filter or an inner tube (not shown) of the second filter stage 7 located downstream of the pre-filter has a circular cross-section with a filter stage diameter d.
  • the filter stage diameter d has an area that is approximately equal to the area of the Fig.3 shown intake manifold diameter.
  • Fig.7 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line VII-VII.
  • the drive unit 5 is arranged in the drive unit housing 15.
  • An area of the cross section between the drive unit housing 15 and the drive unit container outer housing 12 is approximately equal to the area of the Fig.3 shown suction pipe diameter.
  • the drive unit container 2 is connected to the handle 1.
  • the suction air flow 19 flows between the drive unit housing 15 and the drive unit container outer housing 12 in a circular segment-shaped flow cross-section which is interrupted by functional geometries (not shown).
  • Fig.8 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line VIII-VIII.
  • the further filter stage 8 is arranged in the drive unit container 2 and surrounded by the drive unit outer housing 12. It is designed as a central filter.
  • the drive unit housing 15 has an opening 16. During operation, the suction air flow 19 flows through the central filter and then through the opening 16 into the drive unit housing 15.
  • Fig.9 shows another partial cross-sectional view of the Fig.2 shown vacuum cleaner 100.
  • the second filter stage 7 can be removed in the direction of the arrow from the separating container 3, while the further filter stage 8 can be removed in the direction of the arrow from the drive unit container 2.
  • the second filter stage 7 and the further filter stage 8 can therefore be removed in opposite directions.
  • Fig.10 shows the removable, further filter stage 8 as filter assembly 30 in a single view, while the Fig. 11 this filter assembly 30 is shown inserted in the drive unit container outer housing 12.
  • the filter assembly 30 of the further filter stage 8 consists of a first frame element 31 with a central opening 32 and a sealing element 33 to the drive unit housing 15 ( Fig.1 ), a second frame element 34 and a Filter medium 35, which is glued between the two frame elements 31, 34 and can also preferably be kept stable in its shape without further support elements.
  • the design of the first frame element 31 shown here which in the detailed view of Fig. 11b can be seen enlarged, represents a 2-component component, with a soft component area 36 forming the central opening 32 with the corresponding sealing element 33.
  • a centrally arranged penetration geometry 37 is provided for the cleaning axis 23.
  • the cleaning axis 23 is thereby connected to the external actuating element 27.
  • the second frame element has a circumferential collar 38, which is inserted into the separating container outer housing 15 ( Fig. 11 ).
  • the flow direction of the filter medium 35 from the outside to the inside causes the fine dust to be deposited on the outside of the filter medium 35.
  • the central filter of the further filter stage 8 has a cylindrical basic shape, with the filter medium 35 being pleated, arranged along the cylindrical shape and separating an inner area of the central filter 8 from an outer area of the central filter 8.
  • This mechanical cleaning device 22 for loosening dirt adhering to the filter medium 35 of the central filter 8 has a cleaning axis 23 which rotates in the central filter 8 to loosen the adhering dirt and which is provided with blades as pulse generators 24. These are designed to exert pulses on the filter medium 35 from the rotational movement of the cleaning axis 23 which loosen the adhering dirt. This makes it easy to remove dirt adhering to the filter medium 35, since the triggered impulses knock off the dirt particles. If the user of the vacuum cleaner 100 rotates the cleaning axis 23, preferably manually, using the rotary knob 27, the collected dust is released from the filter medium 35.
  • the dirt particles released by the impulses fall off the filter medium 35 of the central filter 8 and can thus be removed from time to time from the filter chamber in which the central filter 8 is arranged.
  • the drive unit container outer housing 12 can be opened and the dust that has fallen off the filter medium 35 of the further filter stage 8 as a result of the back cleaning can be passed past the drive unit housing 15 via the drive unit container 2 can be emptied together with the dirt separated via the first filter stage 6 and the second filter stage 7.
  • Cleaning the central filter 8 without removing it provides a simple hygiene concept, as direct contact with the dust is minimized.
  • the filter assembly 30 of the further filter stage 8 can be removed from the separating container 3 for cleaning.
  • the sealing element 33 which is in Figure 11a is shown in an enlarged detailed view. This sealing element 33 can be designed as a lip seal or H-shaped seal made of a rubber material or the like.

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

Description

Die Erfindung betrifft einen handgeführten Zyklon-Staubsauger, der nachfolgend der Einfachheit halber als Staubsauger bezeichnet wird. Insbesondere betrifft die Erfindung einen Staubsauger, der einen Abscheidebehälter zur Aufnahme von Sauggut und einen Antriebsaggregatbehälter aufweist, der ein Antriebsaggregat aufweist, das ausgebildet ist, bei Betrieb einen Saugluftstrom zu erzeugen.The invention relates to a hand-held cyclone vacuum cleaner, which is referred to below as a vacuum cleaner for the sake of simplicity. In particular, the invention relates to a vacuum cleaner which has a separating container for receiving suction material and a drive unit container which has a drive unit which is designed to generate a suction air flow during operation.

Ein derartiger Staubsauger ist aus der WO 2017/046 559 A1 bekannt. Der Staubsauger weist zwei Filterstufen auf, die über eine Zyklontechnologie realisiert sind, so dass sie als Multizyklon ausgebildet sind. Weiterhin weist der Staubsauger eine dem Multizyklon strömungstechnisch nachgeschaltete dritte Filterstufe auf, die um ein eingekapseltes Radialgebläse herum gebaut ist. Eine axiale Ausströmung des Gebläses wird durch einen Abluftfilter geleitet. Die Anströmung der verschiedenen Filterstufen benötigt jedoch einen relativ großen Bauraum.Such a vacuum cleaner is from the WO 2017/046 559 A1 known. The vacuum cleaner has two filter stages, which are implemented using cyclone technology, so that they are designed as a multi-cyclone. The vacuum cleaner also has a third filter stage, which is connected downstream of the multi-cyclone in terms of flow technology and is built around an encapsulated radial fan. An axial outflow from the fan is directed through an exhaust air filter. The flow to the various filter stages, however, requires a relatively large installation space.

Aus EP 3 718 452 A1 ist ein handgeführter Zyklon-Staubsauger zur Reinigung und Pflege von Bodenflächen bekannt. Dieser verfügt über ein Antriebsaggregat zur Erzeugung eines Unterdruckes zur Aufnahme von Sauggut mittels eines Saugluftstromes. Außerdem weist dieser Staubsauger eine Abscheideeinheit zur Abscheidung von Sauggut aus dem Saugluftstrom auf, wobei die Abscheideeinheit ein Antriebsaggregat zum Erzeugen eines Saugluftstroms umfasst. Ferner verfügt die Abscheideeinheit über eine erste Filterstufe in Form eines Zyklon, eine zweite Filterstufe und eine dritte Filterstufe. Das Antriebsaggregat ist bei diesem Staubsauger stromabwärts im Saugluftstrom der zweiten Filterstufe und stromaufwärts der dritten Filterstufe im Saugluftstrom in einem Antriebsaggregatgehäuse angeordnet.Out of EP 3 718 452 A1 A hand-held cyclone vacuum cleaner for cleaning and maintaining floor surfaces is known. This has a drive unit for generating a negative pressure for collecting suction material by means of a suction air flow. This vacuum cleaner also has a separation unit for separating suction material from the suction air flow, the separation unit comprising a drive unit for generating a suction air flow. The separation unit also has a first filter stage in the form of a cyclone, a second filter stage and a third filter stage. The drive unit in this vacuum cleaner is arranged downstream in the suction air flow of the second filter stage and upstream of the third filter stage in the suction air flow in a drive unit housing.

Die US 2017/290479 A1 offenbart einen handgeführten Zyklonabscheider mit einer dritten Filterstufe, welche zwischen dem Abscheider und dem Antriebsaggregat angeordnet ist. Der vom Antriebsaggregat erzeugte Saugluftstrom durchströmt nach dem Passieren der dritten Filterstufe das Antriebsaggregat. Auch die WO 2008/070965 A1 , WO 2020/168417 A1 und die EP 2 581 012 A1 offenbaren handgeführte Staubsauger deren Antriebsaggregate vom Saugluftstrom lediglich durchströmt werden.The US 2017/290479 A1 discloses a hand-held cyclone separator with a third filter stage, which is arranged between the separator and the drive unit. The suction air flow generated by the drive unit flows through the drive unit after passing the third filter stage. The WO 2008/070965 A1 , WO 2020/168417 A1 and the EP 2 581 012 A1 reveal hand-held vacuum cleaners whose drive units are only passed through by the suction air flow.

Der Erfindung stellt sich somit das Problem, einen handgeführten Zyklon-Staubsauger bereitzustellen, der mehrere Filterstufen aufweist, die in einem kompakten Bauraum realisiert sind. Zudem sollten die Filterstufen für den Nutzer einfacher zugänglich sein. Ferner soll eine einfache, automatische Abreinigung von Filterstufen ermöglicht werden.The invention therefore addresses the problem of providing a hand-held cyclone vacuum cleaner that has several filter stages that are implemented in a compact installation space. In addition, the filter stages should be easier for the user to access. Furthermore, simple, automatic cleaning of filter stages should be possible.

Erfindungsgemäß wird dieses Problem durch einen handgeführten Zyklon-Staubsauger mit den Merkmalen des Patentanspruchs 1 gelöst. Dadurch, dass der erzeugte Saugluftstrom zunächst die erste Filterstufe, dann die zweite Filterstufe und schließlich eine weitere Filterstufe passiert, wobei das Antriebsaggregat von dem bei Betrieb des Antriebsaggregates erzeugten Saugluftstrom umströmt wird, wobei die dritte Filterstufe strömungstechnisch hinter der weiteren Filterstufe angeordnet ist und ein Abluftfilterelement aufweist, kann ein handgeführter Zyklon-Staubsauger bereitgestellt werden, der in einem kompakten Bauraum mehrere Filterstufen aufweist. Das Antriebsaggregatgehäuse in dem das Antriebsaggregat integriert ist, wird von dem erzeugten Saugluftstrom umströmt. Dadurch, dass das sich in dem Antriebsaggregatgehäuse befindende Antriebsaggregat von dem Saugluftstrom umströmbar ist, wird Bauraum eingespart. Dabei ist das Antriebsaggregatgehäuse, in dem das Antriebsaggregat angeordnet ist, vorteilhafterweise saugstromabwärts der zweiten Filterstufe und saugstromaufwärts der dritten Filterstufe angeordnet. Über die weitere Filterstufe, die strömungstechnisch vor der dritten Filterstufe angeordnet ist, kann der erforderliche Bauraum für die dritte Filterstufe deutlich reduziert werden. Die Erfindung betrifft also einen handgeführten Zyklon-Staubsauger, aufweisend eine Abscheideeinheit zum Sammeln von Sauggut, die ein Antriebsaggregat zum Erzeugen eines Saugluftstroms, eine erste Filterstufe, eine zweite Filterstufe und eine dritte Filterstufe aufweist; wobei das Antriebsaggregat saugluftstromabwärts der zweiten Filterstufe und saugluftstromaufwärts der dritten Filterstufe in einem Antriebsaggregatgehäuse angeordnet ist, wobei das Antriebsaggregat von dem bei Betrieb des Antriebsaggregates erzeugten Saugluftstrom umströmt wird. Das Antriebsaggregat ist dabei räumlich zwischen der zweiten Filterstufe und der weiteren Filterstufe in einem Antriebsaggregatgehäuse angeordnet.According to the invention, this problem is solved by a hand-held cyclone vacuum cleaner with the features of claim 1. Because the generated suction air flow first passes the first filter stage, then the second filter stage and finally a further filter stage, the drive unit being flowed around by the suction air flow generated during operation of the drive unit, the third filter stage being arranged behind the further filter stage in terms of flow and having an exhaust air filter element, a hand-held cyclone vacuum cleaner can be provided which has several filter stages in a compact installation space. The drive unit housing in which the drive unit is integrated is flowed around by the generated suction air flow. Installation space is saved because the drive unit located in the drive unit housing can be flowed around by the suction air flow. The drive unit housing in which the drive unit is arranged is advantageously arranged downstream of the second filter stage and upstream of the third filter stage. The additional filter stage, which is arranged fluidically upstream of the third filter stage, allows the installation space required for the third filter stage to be significantly reduced. The invention therefore relates to a hand-held cyclone vacuum cleaner, having a separation unit for collecting suction material, which has a drive unit for generating a suction air flow, a first filter stage, a second filter stage and a third filter stage; the drive unit is arranged downstream of the second filter stage and upstream of the third filter stage in a drive unit housing, the drive unit being surrounded by the suction air flow generated when the drive unit is in operation. The drive unit is arranged spatially between the second filter stage and the additional filter stage in a drive unit housing.

Durch die Erfindung wird ein Staubsauger in einer kompakten Bauform zur Verfügung gestellt, welcher mehrere Filterstufen aufweist. Die Realisierung mehrerer Filterstufen ermöglicht eine besonders effektive Abscheideeinheit mit einer besonders trennscharfen ersten Filterstufe. Gleichzeitig sind alle Filterstufen der Abscheideeinheit, welche einer periodischen Reinigung bedürfen, für den Benutzer einfach zugänglich angeordnet.The invention provides a vacuum cleaner in a compact design that has several filter stages. The implementation of several filter stages enables a particularly effective separation unit with a particularly selective first filter stage. At the same time, all filter stages of the separation unit that require periodic cleaning are arranged so that they are easily accessible for the user.

Unter dem Ausdruck "handgeführt" ist zu verstehen, dass der Staubsauger per Hand von dem Nutzer bei Betrieb geführt wird. Dazu weist der Staubsauger bevorzugt weiterhin einen Handgriff auf. Bevorzugt ist der Handgriff mit der Abscheideeinheit fest verbunden oder verbindbar.The term "hand-held" means that the vacuum cleaner is operated by hand by the user. For this purpose, the vacuum cleaner preferably also has a handle. The handle is preferably firmly connected to the separation unit or can be connected.

Unter dem Begriff "Zyklon-Staubsauger" ist ein Staubsauger zu verstehen, der beutellos ist und bei dem der Saugluftstrom in der Abscheideeinheit einen Wirbelstrom ausbildet, welcher zur Abtrennung von Staub- und Schmutzpartikeln aus dem Saugluftstrom unter Gravitationseinfluss fungiert.The term "cyclone vacuum cleaner" refers to a vacuum cleaner that is bagless and in which the suction air flow in the separation unit forms a vortex current, which functions to separate dust and dirt particles from the suction air flow under the influence of gravity.

Unter dem Ausdruck "beutellos" ist zu verstehen, dass das Sauggut in dem Staubsauger direkt in der Abscheideeinheit gesammelt bzw. aus den Saugluftstrom abgeschieden wird, ohne dass in dieser ein Beutel oder ein ähnliches Wechselfiltermedium zur Aufnahme von Sauggut angeordnet ist, so dass der Nutzer zur Entleerung des Saugguts aus der Abscheideeinheit keinen Beutel oder dgl. aus dem Abscheidebehälter entnimmt. Der Staubsauger weist aber mehrere Filtermedien auf, die verhindern, dass aufgesaugtes Sauggut in das in dem Antriebsaggregatgehäuse angeordnete Antriebsaggregat gelangt.The term "bagless" means that the suction material in the vacuum cleaner is collected directly in the separation unit or separated from the suction air flow without a bag or similar replaceable filter medium being arranged in the latter to collect suction material, so that the user does not remove a bag or similar from the separation container to empty the suction material from the separation unit. However, the vacuum cleaner has several filter media that prevent suction material from reaching the drive unit arranged in the drive unit housing.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen. Es ist darauf hinzuweisen, dass die in den Ansprüchen einzeln aufgeführten Merkmale auch in beliebiger und technologisch sinnvoller Weise miteinander kombiniert werden können und somit weitere Ausgestaltungen der Erfindung aufzeigen.Advantageous embodiments and further developments of the invention emerge from the following subclaims. It should be noted that the features listed individually in the claims can also be combined with one another in any technologically reasonable manner and thus show further embodiments of the invention.

In einer bevorzugten Ausführungsform ist das Antriebsaggregat derart angeordnet, dass eine Einströmrichtung des Saugluftstroms in das Antriebsaggregat entgegengesetzt ist zu einer Strömungsrichtung des Saugluftstroms von der zweiten Filterstufe zu der weiteren Filterstufe. Der erzeugte Saugluftstrom ändert seine Richtung daher auch um 180° während seines Weges innerhalb des Staubsaugers. Das Antriebsaggregat, das bevorzugt als Gebläse ausgebildet ist, ist bevorzugt um 180° gedreht in Bezug auf ein Saugrohr des Staubsaugers, in das der Saugluftstrom in den Staubsauger vor Eintritt in die Filterstufen eintritt. D. h., eine Strömungsrichtung des in das Saugrohr einströmenden Saugluftstroms ist entgegengesetzt zu einer weiteren Strömungsrichtung des in das Antriebsaggregat eintretenden Saugluftstroms.In a preferred embodiment, the drive unit is arranged such that an inflow direction of the suction air flow into the drive unit is opposite to a flow direction of the suction air flow from the second filter stage to the further filter stage. The suction air flow generated therefore also changes direction by 180° during its path within the vacuum cleaner. The drive unit, which is preferably designed as a fan, is preferably rotated by 180° with respect to a suction pipe of the vacuum cleaner, into which the suction air flow enters the vacuum cleaner before entering the filter stages. This means that a flow direction of the suction air flow flowing into the suction pipe is opposite to a further flow direction of the suction air flow entering the drive unit.

Bevorzugt weist die erste Filterstufe einen bei Betrieb vom Antriebsaggregat erzeugten Zyklon, die zweite Filterstufe einen Vorfilter und die weitere Filterstufe einen Zentralfilter auf. Bevorzugt weist der Zentralfilter ein Speichermedium auf, das ausgebildet ist, Staub zu speichern. Er ist bevorzugt als Feinfilter ausgelegt. Der Vorfilter dient im Wesentlichen als Filterschutz für den Zentralfilter und ist im Wesentlichen ausgelegt, Grobpartikel an einem Eintreten in einen Raum zwischen der zweiten Filterstufe und der weiteren Filterstufe zu hindern.Preferably, the first filter stage has a cyclone generated by the drive unit during operation, the second filter stage has a pre-filter and the further filter stage has a central filter. Preferably, the central filter has a storage medium designed to store dust. It is preferably designed as a fine filter. The pre-filter essentially serves as filter protection for the central filter and is essentially designed to prevent coarse particles from entering a space between the second filter stage and the further filter stage.

Bevorzugt sind der Vorfilter und der Zentralfilter axial entlang der Längsachse der Abscheideeinheit angeordnet. Bevorzugt erstreckt sich die Abscheideeinheit entlang einer Längsachse. Bevorzugt erstrecken sich der Vorfilter und der Zentralfilter jeweils parallel zu der Längsachse.Preferably, the pre-filter and the central filter are arranged axially along the longitudinal axis of the separation unit. Preferably, the separation unit extends along a longitudinal axis. Preferably, the pre-filter and the central filter each extend parallel to the longitudinal axis.

Bevorzugt sind die erste Filterstufe, die zweite Filterstufe und die weitere Filterstufe in der angegebenen Reihenfolge strömungstechnisch hintereinander angeordnet. Das bedeutet, dass der erzeugte Saugluftstrom zunächst die erste Filterstufe, dann die zweite Filterstufe und schließlich die weitere Filterstufe passiert.Preferably, the first filter stage, the second filter stage and the further filter stage are arranged one behind the other in the specified order. This means that that the generated suction air flow first passes the first filter stage, then the second filter stage and finally the further filter stage.

In einer bevorzugten Ausführungsform weist die erste Filterstufe weiterhin einen Einlaufschlitz auf, der derart angeordnet ist, dass bei Betrieb der Saugluftstrom aus dem Einlaufschlitz an eine Innenwand des Abscheidebehälters tangential geleitet wird, so dass sich ein Zyklon in der ersten Filterstufe bei Betrieb ausbildet. Der Zyklonwirbel bildet sich bei Betrieb in der ersten Filterstufe aus, so dass sich Partikel mit einem gewissen Druckverlust und einem gewissen Trennkorn abscheiden. Die erste Filterstufe weist bevorzugt den Einlaufschlitz, die Innenwand und ein Tauchrohr auf. Das Tauchrohr ist bevorzugt mit der Innenwand fest verbunden und auf einer Seite der Innenwand angeordnet, die von der zweiten Filterstufe abgewandt ist. Der Einlaufschlitz weist bevorzugt einen rechteckigen Querschnitt auf.In a preferred embodiment, the first filter stage further comprises an inlet slot which is arranged such that during operation the suction air flow from the inlet slot is guided tangentially to an inner wall of the separating vessel, so that a cyclone forms in the first filter stage during operation. The cyclone vortex forms in the first filter stage during operation, so that particles are separated with a certain pressure loss and a certain separation grain. The first filter stage preferably comprises the inlet slot, the inner wall and a dip tube. The dip tube is preferably firmly connected to the inner wall and arranged on a side of the inner wall which faces away from the second filter stage. The inlet slot preferably has a rectangular cross-section.

Bevorzugt weist der Staubsauger das Saugrohr auf, aus dem bei Betrieb der Saugluftstrom in den Einlaufschlitz strömt. Das Saugrohr weist bevorzugt einen kreisförmigen Querschnitt auf. Das Saugrohr ist bevorzugt mit einer Bodendüse undloder einem Verlängerungsrohr verbindbar. Das Saugrohr weist eine Längsachse auf, welche im Mittelpunkt seines kreisförmigen Querschnitts liegt und sich entlang der gesamten Länge des Saugrohrs erstreckt.The vacuum cleaner preferably has the suction pipe from which the suction air stream flows into the inlet slot during operation. The suction pipe preferably has a circular cross-section. The suction pipe can preferably be connected to a floor nozzle and/or an extension pipe. The suction pipe has a longitudinal axis which lies at the center of its circular cross-section and extends along the entire length of the suction pipe.

Bevorzugt weist die zweite Filterstufe einen Vorfilter auf. Der Vorfilter ist bevorzugt aus einer Gewebegaze, einem Kunststoffsieb, einem Stanzgitter oder einer Metallgaze ausgebildet. Bevorzugt weist die zweite Filterstufe weiterhin ein Innenrohr auf, das mit dem Vorfilter verbunden ist. Bevorzugt ist das Innenrohr strömungstechnisch hinter dem Vorfilter und vor der dritten Filterstufe angeordnet. Bevorzugt ist der Vorfilter zwischen der Innenwand und dem Innenrohr angeordnet.The second filter stage preferably has a pre-filter. The pre-filter is preferably made of a fabric gauze, a plastic sieve, a punched grid or a metal gauze. The second filter stage preferably also has an inner tube which is connected to the pre-filter. The inner tube is preferably arranged behind the pre-filter and before the third filter stage in terms of flow. The pre-filter is preferably arranged between the inner wall and the inner tube.

In einer bevorzugten Ausführungsform ist der Zentralfilter ein zylinderförmiger Filter, der zum Antriebsaggregat und zu einem Abscheideeinheit-Außengehäuse abgedichtet ist. Bevorzugt weist der Zentralfilter ein Speichermedium auf, das ausgebildet ist, Staub zu speichern. Er ist bevorzugt als Feinfilter ausgelegt. Der Vorfilter dient im Wesentlichen als Filterschutz für den Zentralfilter und ist im Wesentlichen ausgelegt, Grobpartikel an einem Eintreten in einen Raum zwischen der zweiten Filterstufe und der weiteren Filterstufe zu hindern.In a preferred embodiment, the central filter is a cylindrical filter that is sealed to the drive unit and to a separating unit outer housing. The central filter preferably has a storage medium that is designed to store dust. It is preferably designed as a fine filter. The pre-filter essentially serves as filter protection for the central filter and is essentially designed to prevent coarse particles from entering a space between the second filter stage and the further filter stage.

Bevorzugt ist die weitere Filterstufe derart angeordnet, dass der bei Betrieb erzeugte Saugluftstrom axial in das Antriebsaggregat einströmt. Dies ermöglicht eine kompakte Bauform des Staubsaugers.Preferably, the further filter stage is arranged in such a way that the suction air flow generated during operation flows axially into the drive unit. This enables a compact design of the vacuum cleaner.

In einer bevorzugten Ausführungsform ist die zweite Filterstufe aus der Abscheideeinheit in einer Entnahmerichtung entnehmbar, die entgegengesetzt ist zu einer weiteren Entnahmerichtung, in die die weitere Filterstufe aus der Abscheideeinheit entnehmbar ist. Durch die parallel verschobene Anordnung der zweiten Filterstufe und der weiteren Filterstufe sind beide unabhängig voneinander entnehmbar. Bevorzugt ist der Vorfilter mit der Innenwand der ersten Filterstufe lösbar verbunden, die mit dem Tauchrohr verbunden ist, so dass die zweite Filterstufe mittels Entnahme des Tauchrohrs aus dem Abscheidebehälter entnehmbar ist.In a preferred embodiment, the second filter stage can be removed from the separation unit in a removal direction that is opposite to a further Removal direction in which the further filter stage can be removed from the separation unit. Due to the parallel arrangement of the second filter stage and the further filter stage, both can be removed independently of one another. Preferably, the pre-filter is detachably connected to the inner wall of the first filter stage, which is connected to the dip tube, so that the second filter stage can be removed from the separation container by removing the dip tube.

Der Staubsauger weist eine dritte Filterstufe, die strömungstechnisch hinter der weiteren Filterstufe angeordnet ist und die ein Abluftfilterelement aufweist. Das Abluftfilterelement ist bevorzugt als ein Filter oder eine Klappe in einem Außengehäuse der Abscheideeinheit ausgebildet.The vacuum cleaner has a third filter stage, which is arranged fluidically behind the other filter stage and which has an exhaust air filter element. The exhaust air filter element is preferably designed as a filter or a flap in an outer housing of the separation unit.

In einer bevorzugten Ausführungsform weist die Abscheideeinheit einen Antriebsaggregatbehälter und einen Abscheidebehälter auf, wobei der Antriebsaggregatbehälter das Antriebsaggregatgehäuse, das Antriebsaggregat und die weitere Filterstufe enthält und der Abscheidebehälter die erste und die zweite Filterstufe aufweist. Bevorzugt sind der Antriebsaggregatbehälter und der Abscheidebehälter benachbart angeordnet und erstrecken sich entlang parallelen Längsachsen. Bevorzugt sind der Abscheidebehälter und der Antriebsaggregatbehälter unlösbar miteinander verbunden.In a preferred embodiment, the separation unit has a drive unit container and a separation container, wherein the drive unit container contains the drive unit housing, the drive unit and the further filter stage and the separation container has the first and the second filter stage. Preferably, the drive unit container and the separation container are arranged adjacent to one another and extend along parallel longitudinal axes. Preferably, the separation container and the drive unit container are non-detachably connected to one another.

Bevorzugt ist das Antriebsaggregatgehäuse von einem kreissegmentförmigen Strömungsquerschnitt umgeben, durch den der Saugluftstrom bei Betrieb strömt, bevor er die weitere Filterstufe erreicht. Dadurch wird der Staubsauger weiterhin kompakt bereitgestellt. Der kreissegmentförmige Strömungsquerschnitt kann jedoch partiell von Funktionsgeometrie(n) unterbrochen sein. Bevorzugt sind das Antriebsaggregatgehäuse, der Strömungsquerschnitt und der Zentralfilter derart ausgebildet und angeordnet, dass die weitere Filterstufe umfänglich von dem Saugluftstrom bei Betrieb angeströmt wird.Preferably, the drive unit housing is surrounded by a circular segment-shaped flow cross-section through which the suction air flow flows during operation before it reaches the further filter stage. This means that the vacuum cleaner is still provided in a compact manner. However, the circular segment-shaped flow cross-section can be partially interrupted by functional geometry(s). Preferably, the drive unit housing, the flow cross-section and the central filter are designed and arranged in such a way that the suction air flow flows around the further filter stage during operation.

Bevorzugt ist ein Saugrohr-Durchmesser des Saugrohrs im Wesentlichen gleich zu einer Querschnittsfläche des Einlaufschlitzes mit einem rechteckigen Querschnitt. Bevorzugt ist der Saugrohr-Durchmesser im Wesentlichen gleich zu einem Filterstufen-Durchmesser des Innenrohrs der zweiten Filterstufe undloder gleich zu einem Durchmesser des Vorfilters. Eine Fläche des Strömungsquerschnitts zwischen dem Antriebsaggregatgehäuse und dem Antriebsaggregatbehälter-Außengehäuse ist bevorzugt etwa gleich zu der Fläche des Saugrohr-Durchmessers. Mit den Durchmessern sind insbesondere Innendurchmesser gemeint.Preferably, a suction pipe diameter of the suction pipe is substantially equal to a cross-sectional area of the inlet slot with a rectangular cross-section. Preferably, the suction pipe diameter is substantially equal to a filter stage diameter of the inner pipe of the second filter stage and/or equal to a diameter of the pre-filter. An area of the flow cross-section between the drive unit housing and the drive unit container outer housing is preferably approximately equal to the area of the suction pipe diameter. The diameters refer in particular to inner diameters.

Bevorzugt liegt der Durchmesser des Saugrohrs im Bereich von 20 bis 40 mm, bevorzugt 25 bis 35 mm. Bevorzugt weist die erste Filterstufe folgende Abmessungen auf: Bevorzugter weist der Zyklon einen Durchmesser im Bereich von 90 bis 100 mm auf, eine Höhe des Zyklons, die als eine Abmessung zwischen dem Einlaufschlitz und der Innenwand definiert ist, liegt bevorzugt im Bereich von 80 bis 140 mm, bevorzugt 110 bis 130 mm. Eine Höhe des Tauchrohrs, die eine Längserstreckung des Tauchrohr ausgehend von der Innenwand darstellt, liegt bevorzugt im Bereich von 20 - 60 mm, bevorzugter 30 bis 50 mm, und ein Durchmesser des Tauchrohrs beträgt bevorzugt 35 - 60 mm, bevorzugter 40 bis 50 mm. Eine Breite des Einlaufschlitzes ist bevorzugt 14 - 30 mm, bevorzugt 18 bis 26, während eine Höhe des Einlaufschlitzes bevorzugt 20 - 52 mm, bevorzugt 30 bis 40 mm beträgt, wobei die Höhe und Breite des Einlaufschlitzes einen Querschnitt des Einlaufschlitzes definieren. Je kleiner der Durchmesser des Vorfilters ist, desto besser ist eine Trennung zwischen der zweiten und der weiteren Filterstufe und desto besser ist ihre Abscheideleistung.Preferably, the diameter of the suction pipe is in the range of 20 to 40 mm, preferably 25 to 35 mm. Preferably, the first filter stage has the following dimensions: Preferably, the cyclone has a diameter in the range of 90 to 100 mm, a height of the Cyclone, which is defined as a dimension between the inlet slot and the inner wall, is preferably in the range of 80 to 140 mm, preferably 110 to 130 mm. A height of the dip tube, which represents a longitudinal extension of the dip tube starting from the inner wall, is preferably in the range of 20 - 60 mm, more preferably 30 to 50 mm, and a diameter of the dip tube is preferably 35 - 60 mm, more preferably 40 to 50 mm. A width of the inlet slot is preferably 14 - 30 mm, preferably 18 to 26, while a height of the inlet slot is preferably 20 - 52 mm, preferably 30 to 40 mm, wherein the height and width of the inlet slot define a cross section of the inlet slot. The smaller the diameter of the prefilter, the better the separation between the second and the further filter stage and the better their separation performance.

Bevorzugt ist der Antriebsaggregatbehälter mit dem Handgriff verbunden. In einer betriebsgemäßen Arbeitsposition befindet sich der Antriebsaggregatbehälter bevorzugt an einer Rückseite bzw. einem hinteren Ende des Staubsaugers, womit gemeint ist, dass er näher an der Hand des Nutzers ist und weiter von dem zu saugenden Untergrund entfernt ist als der Abscheidebehälter.Preferably, the drive unit container is connected to the handle. In a normal operating position, the drive unit container is preferably located at a rear or rear end of the vacuum cleaner, which means that it is closer to the user's hand and further away from the surface to be vacuumed than the separation container.

Der Staubsauger ist bevorzugt ein Akkustaubsauger. D.h., der Staubsauger weist einen Akkumulator auf und ist ausgelegt, mittels des Akkumulators als Stromquelle betrieben zu werden. Der Akkumulator ist mit dem Sauggutbehälter undloder dem Gerätekorpus bevorzugt dem Gerätekorpus verbindbar.The vacuum cleaner is preferably a battery-operated vacuum cleaner. This means that the vacuum cleaner has a battery and is designed to be operated using the battery as a power source. The battery can be connected to the suction container and/or the device body, preferably the device body.

Weiterhin kann der Staubsauger ein Verlängerungsrohr aufweisen, das mit dem Saugrohr verbindbar ist. Ferner kann der Staubsauger eine Bodendüse aufweisen, die mit dem Saugrohr und dem Verlängerungsrohr verbindbar ist.Furthermore, the vacuum cleaner can have an extension tube that can be connected to the suction tube. Furthermore, the vacuum cleaner can have a floor nozzle that can be connected to the suction tube and the extension tube.

Das Antriebsaggregat ist bevorzugt als ein Gebläse ausgebildet.The drive unit is preferably designed as a fan.

Besonders vorteilhaft ist eine Ausführungsform, die vorsieht, dass die erste Filterstufe der Abscheideeinheit des Zyklon-Staubsaugers eine Längsachse ausbildet, wobei im Betrieb des Antriebsaggregats der Saugluftstrom einen Wirbelstrom um die Längsachse der ersten Filterstufe ausbildet, wobei die Längsachse der ersten Filterstufe parallel zur Längsachse eines Saugrohres ausgerichtet ist. Die parallele Ausrichtung der Längsachsen der ersten Filterstufe und des Saugrohrs sind vorteilhaft für die Realisierung eines Staubsaugers mit einer kompakten Bauform.A particularly advantageous embodiment provides that the first filter stage of the separation unit of the cyclone vacuum cleaner forms a longitudinal axis, wherein during operation of the drive unit the suction air flow forms a vortex flow around the longitudinal axis of the first filter stage, wherein the longitudinal axis of the first filter stage is aligned parallel to the longitudinal axis of a suction pipe. The parallel alignment of the longitudinal axes of the first filter stage and the suction pipe are advantageous for the realization of a vacuum cleaner with a compact design.

Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, dass die weitere Filterstufe einen Zentralfilter aufweist, der von dem erzeugten Saugluftstrom von außen nach innen durchströmt wird. Ein Zentralfilter weist eine vorzugsweise zylindrische Grundform auf, wobei ein Filtermedium, bevorzugt plissiert, entlang der Zylinderform angeordnet ist und einen Innenbereich des Zentralfilters von einem Außenbereich des Zentralfilters abtrennt. Bei Durchströmung des Zentralfilters von außen nach innen, werden Schmutzpartikel aus dem Saugluftstrom an der Außenseite des Filtermediums abgeschieden und der gereinigte Saugluftstrom strömt in den Innenbereich des Zentralfilters. Eine automatische Abreinigung der an der Außenseite abgelagerten Schmutzpartikel lässt sich einfach einrichten.An advantageous embodiment of the invention provides that the further filter stage has a central filter through which the generated suction air flow flows from the outside to the inside. A central filter has a preferably cylindrical basic shape, wherein a filter medium, preferably pleated, is arranged along the cylinder shape and has a The inner area of the central filter is separated from the outer area of the central filter. When the air flows through the central filter from the outside to the inside, dirt particles from the suction air flow are separated on the outside of the filter medium and the cleaned suction air flow flows into the inner area of the central filter. Automatic cleaning of the dirt particles deposited on the outside can be easily set up.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass eine mechanische Abreinigungsvorrichtung zum Lösen von an dem Filtermedium des Zentralfilters anhaftendem Schmutz vorgesehen ist, wobei die Abreinigungsvorrichtung eine sich im Zentralfilter zum Lösen des anhaftenden Schmutzes drehende Reinigungsachse aufweist, die mit Impulsgebern versehen ist, welche dazu ausgebildet sind, aus der Drehbewegung der Reinigungsachse heraus den anhaftenden Schmutz lösende Impulse auf das Filtermedium auszuüben. Mit einer solchen mechanischen Abreinigungsvorrichtung ist das Lösen von an dem Filtermedium anhaftendem Schmutz einfach möglich, da die ausgelösten Impulse die Schmutzpartikel abklopfen. Die durch die Impulse gelösten Schmutzpartikel fallen von dem Filtermedium des Zentralfilters ab und können so von Zeit zu Zeit aus dem Filterraum, in dem der Zentralfilter angeordnet ist, entfernt werden.According to an advantageous embodiment of the invention, a mechanical cleaning device is provided for removing dirt adhering to the filter medium of the central filter, the cleaning device having a cleaning axis rotating in the central filter to remove the adhering dirt, which is provided with pulse generators designed to apply pulses to the filter medium from the rotational movement of the cleaning axis to remove the adhering dirt. With such a mechanical cleaning device, removing dirt adhering to the filter medium is easy, since the pulses triggered knock off the dirt particles. The dirt particles removed by the pulses fall off the filter medium of the central filter and can thus be removed from time to time from the filter chamber in which the central filter is arranged.

Besonders bevorzugt ist eine Ausführungsform, die vorsieht, dass der Zentralfilter in einem Abscheidebehälter-Außengehäuse angeordnet ist, wobei das Abscheidebehälter-Außengehäuse mit einer über einen Deckel abdeckbaren Öffnung versehen ist, über welche der Zentralfilter zum Filterwechsel undloder zur Filterreinigung undloder zur Entleerung des Abscheidebehälter-Außengehäuses aus dem Abscheidebehälter-Außengehäuse entnehmbar ist, wobei der Deckel mit einem Betätigungselement versehen ist, über welches die Reinigungsachse zum Lösen des anhaftenden Schmutzes in dem im Abscheidebehälter-Außengehäuse aufgenommenen Zentralfilter betätigt wird. Durch die Öffnung kann der Zentralfilter einfach zum Wechsel oder zur manuellen Reinigung aus dem Abscheidebehälter-Außengehäuse entnommen werden. Das Betätigungselement im Deckel ermöglicht zudem eine einfache, mechanische Abreinigung des Zentralfilters, ohne diesen aus dem Abscheidebehälter entnehmen zu müssen. Dazu wird die Reinigungsachse zum Lösen des anhaftenden Schmutzes einfach über das Betätigungselement gedreht. Die Abreinigung des Zentralfilters ohne dessen Herausnahme stellt ein einfaches Hygienekonzept dar, da der direkte Kontakt mit dem Staub minimiert wird. Des Weiteren wird die Performance des Staubsaugers bei der Abscheidung von Schmutz länger aufrechterhalten bzw. mit geringem Zeitaufwand wiederhergestellt.A particularly preferred embodiment provides that the central filter is arranged in a separating tank outer housing, wherein the separating tank outer housing is provided with an opening that can be covered by a lid and through which the central filter can be removed from the separating tank outer housing for filter replacement and/or for filter cleaning and/or for emptying the separating tank outer housing, wherein the lid is provided with an actuating element via which the cleaning axis is actuated to loosen the adhering dirt in the central filter accommodated in the separating tank outer housing. The central filter can be easily removed from the separating tank outer housing through the opening for replacement or manual cleaning. The actuating element in the lid also enables simple, mechanical cleaning of the central filter without having to remove it from the separating tank. To do this, the cleaning axis is simply rotated over the actuating element to loosen the adhering dirt. Cleaning the central filter without removing it is a simple hygiene concept, as direct contact with the dust is minimized. Furthermore, the performance of the vacuum cleaner in separating dirt is maintained for longer or restored with little time expenditure.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aufgrund der nachfolgenden Beschreibung sowie anhand der Zeichnungen. Ein Ausführungsbeispiel der Erfindung ist in den folgenden Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Einander entsprechende Gegenstände oder Elemente sind in allen Figuren mit den gleichen Bezugszeichen versehen. Es zeigt

Fig. 1
eine Teil-Querschnittsansicht eines erfindungsgemäßen Staubsaugers;
Fig. 2
eine perspektivische Ansicht des in Fig. 1 gezeigten Staubsaugers;
Fig. 3
eine Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers;
Fig. 4
eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers;
Fig. 5
eine weitere Teil-Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers;
Fig. 6
eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers;
Fig. 7
eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers;
Fig. 8
eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers;
Fig. 9
eine weitere Teil-Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers;
Fig. 10
Filterbaugruppe; und
Fig. 11, a, b
Filterbaugruppe in Abscheidebehälter-Außengehäuse.
Further features, details and advantages of the invention will become apparent from the following description and from the drawings. An embodiment of the invention is shown purely schematically in the following drawings and is described in more detail below. Corresponding objects or elements are provided with the same reference numerals in all figures. It shows
Fig.1
a partial cross-sectional view of a vacuum cleaner according to the invention;
Fig.2
a perspective view of the Fig.1 shown vacuum cleaner;
Fig.3
a cross-sectional view of the Fig.2 shown vacuum cleaner;
Fig.4
another cross-sectional view of the Fig.2 shown vacuum cleaner;
Fig.5
another partial cross-sectional view of the Fig.2 shown vacuum cleaner;
Fig.6
another cross-sectional view of the Fig.2 shown vacuum cleaner;
Fig.7
another cross-sectional view of the Fig.2 shown vacuum cleaner;
Fig.8
another cross-sectional view of the Fig.2 shown vacuum cleaner;
Fig.9
another partial cross-sectional view of the Fig.2 shown vacuum cleaner;
Fig.10
filter assembly; and
Fig. 11, a, b
Filter assembly in separator tank outer housing.

Fig. 1 zeigt eine Teil-Querschnittsansicht eines erfindungsgemäßen Staubsaugers. Der Staubsauger 100 weist eine Abscheideeinheit 18 auf, die einen Abscheidebehälter 3 und einen Antriebsaggregatbehälter 2 aufweist, die unlösbar verbunden sind. Der Abscheidebehälter 3 ist zum Abscheiden und Sammeln von Sauggut ausgebildet, während der benachbarte Antriebsaggregatbehälter 2 ein Antriebsaggregat 5 enthält, das zum Erzeugen eines Saugluftstroms 19 ausgebildet ist. Der Abscheidebehälter 3 weist eine erste Filterstufe 6 und eine zweite Filterstufe 7 auf, während der Antriebsaggregatbehälter 2 eine weitere Filterstufe 8 aufweist. Die erste Filterstufe 6 weist einen bei Betrieb erzeugten Zyklon auf, während die zweite Filterstufe 7 einen Vorfilter aufweist und die weitere Filterstufe 8 einen Zentralfilter aufweist. Fig.1 shows a partial cross-sectional view of a vacuum cleaner according to the invention. The vacuum cleaner 100 has a separation unit 18 which has a separation container 3 and a drive unit container 2 which are permanently connected. The separation container 3 is designed to separate and collect suction material, while the adjacent drive unit container 2 contains a drive unit 5 which is designed to generate a suction air flow 19. The separation container 3 has a first filter stage 6 and a second filter stage 7, while the drive unit container 2 has a further filter stage 8. The first filter stage 6 has a cyclone generated during operation, while the second filter stage 7 has a pre-filter and the further filter stage 8 has a central filter.

Die erste Filterstufe 6, die zweite Filterstufe 7 und die weitere Filterstufe 8 sind in der angegebenen Reihenfolge strömungstechnisch hintereinander angeordnet. Der Vorfilter und der Zentralfilter sind axial angeordnet. Die erste Filterstufe 6 weist eine Innenwand 10 und ein Tauchrohr 17 auf. Der Antriebsaggregatbehälter 2 weist ein Antriebsaggregatbehälter-Außengehäuse 12 auf, in das optional die dritte Filterstufe 9 in Form eines Abluftfilters integriert ist. Weiterhin weist der Antriebsaggregatbehälter 2 ein Antriebsaggregatgehäuse 15 auf, in das das Antriebsaggregat 5 eingebaut ist.The first filter stage 6, the second filter stage 7 and the further filter stage 8 are arranged one behind the other in terms of flow in the order given. The pre-filter and the central filter are arranged axially. The first filter stage 6 has an inner wall 10 and a dip tube 17. The drive unit container 2 has a drive unit container outer housing 12, into which the third filter stage 9 in the form of an exhaust air filter is optionally integrated. The drive unit container 2 also has a drive unit housing 15, into which the drive unit 5 is installed.

Bei Betrieb erzeugt das Antriebsaggregat 5 einen Saugluftstrom 19, der teilweise durch die Pfeile angedeutet ist. Zuerst passiert der Saugluftstrom 19 die erste Filterstufe 6, wobei er auf die Innenwand 10 prallt und sich ein Zyklon ausbildet. Der Grobschmutz wird im Abscheidebehälter 3 gesammelt und die Luft des Saugluftstroms 19 strömt zur zweiten Filterstufe 7 zurück. Dann passiert der Saugluftstrom 19 die zweite Filterstufe 7, welche mit einer Gewebegaze, einem Kunststoffsieb, einem Stanzgitter oder einer Metallgaze versehen sein kann. Anschließend strömt der Saugluftstrom 19 im inneren der zweiten Filterstufe 7 weiter in einen hinteren Teil des Staubsaugers 100. Dann umströmt der Saugluftstrom 19 dann das Antriebsaggregatgehäuse 15, wobei er hierzu bevorzugt über eine ringförmige Querschnittsfläche 28 (Fig. 7) um das mit dem Antriebsaggregatgehäuse 15 gekapselte Antriebsaggregat 5 herumgeführt wird. Die ringförmige Querschnittsfläche 28 (Fig. 7) kann partiell von Funktionsgeometrien 29 (Fig. 7) unterbrochen sein. Die ringförmige Querschnittsfläche 28 (Fig. 7) kann zwischen 180°-270° auf dem Umfang des Antriebsaggregatgehäuses 15 betragen. Anschließend wird der Saugluftstrom 19 zur weiteren Filterstufe 8 geleitet und strömt diese umfänglich an. Die Luft des Saugluftstroms 19 wird bevorzugt mittels einer Luftleitgeometrie z.B. einer Rampe, Rippen oder ähnliches, in eine 360° ringförmige Querschnittsfläche um den Zentralfilter der weiteren Filterstufe 8 weitergeführt und kann anschließend vollumfänglich die weitere Filterstufe 8 anströmen. Bei der weiteren Filterstufe 8 handelt es sich um einen zylindrischen Filter, der zum Antriebsaggregat 5 und nach außen hin abgedichtet ist. Bei der weiteren Filterstufe 8 kann es sich auch um eine Filterbaugruppe 30 (Fig. 10) handeln, bestehend aus einem ersten Rahmenelement 31 (Fig. 10) mit einer zentralen Öffnung 32 (Fig. 10) und einem Dichtelement 33 (Fig. 10) zum Antriebsaggregatgehäuse 15, einem zweiten Rahmenelement 34 (Fig. 10) und einem Filtermedium 35 (Fig. 10), welches zwischen die beiden Rahmenelemente 31, 34 (Fig. 10) verklebt wird und auch bevorzugt ohne weitere Stützelemente stabil in seiner Form gehalten werden kann. Das erste Rahmenelement 31 (Fig. 10) kann dabei verschiedene Aufbauformen aufweisen. Eine einteilige Aufbauform kann komplett inklusive des Dichtelementes aus einer Hardkomponente oder komplett aus einer Weichkomponente bestehen. Des Weiteren kann dieses erste Rahmenelement 31 (Fig. 10) als 2-Komponentenbauteil ausgeführt sein, wobei ein Weichkomponentenbereich 36 (Fig. 10) die zentrale Öffnung 32 (Fig. 10) mit dem entsprechendem Dichtelement 33 (Fig. 10) bildet. Eine weitere Aufbauform könnte eine zweiteilige Ausführung des ersten Rahmenelements beinhalten. Dabei wird eine Weichkomponente, welche die zentrale Öffnung mit dem entsprechenden Dichtelement bildet, in eine Hardkomponente eingelegt und durch Klemmen oder Verrasten zu einer Einheit gebildet. Eine weitere zweiteilige Ausführung könnte aus einem 2-Komponentenbauteil bestehen, wobei der Weichkomponentenbereich die zentrale Öffnung mit dem entsprechendem Dichtelement bildet, welches anschließend mit einem zusätzlichen Element durch Befestigung eine Einheit bildet. Darüber hinaus besteht die Möglichkeit das erste Rahmenelement aus drei Bauteilen zu bilden. Dabei wird eine Weichkomponente, welche die zentrale Öffnung mit dem entsprechendem Dichtelement abbildet, zwischen zwei Hardkomponenten verbaut. Das zweite Rahmenelement 34 (Fig. 10) beinhaltet neben der Aufnahmemöglichkeit des Filtermediums 35 (Fig. 10), und einer zentral angeordneten Durchtauchgeometrie 37 (Fig. 10) für die Reinigungsachse 23 (Fig. 10), welche mit dem außenliegenden Betätigungselement 27 (Fig. 10) verbunden wird, auch einen umlaufenden Kragen 38 (Fig. 10), welcher in das Abscheidebehälter-Außengehäuse 15 eintaucht. Zur Sicherstellung einer Dichtigkeit zwischen dem Zentralfilter 8 und dem Antriebsaggregatgehäuse 15 trägt das Dichtelement 33 (Fig. 10) bei. Dieses Dichtelement 33 (Fig. 10) kann als Lippendichtung oder H-förmige Dichtung aus einem Gummimaterial oder ähnliches ausgeführt sein. Alternativ kann das zweite Rahmenelement 34 (Fig. 10) als 2-Komponentenbauteil ausgeführt werden, bestehend aus einer Hardkomponente als Trägerteil und einer Weichkomponente an der Stirnseite zum Gerät gerichtete Seite, durch die ebenfalls eine Dichtigkeit zum Antriebsaggregatgehäuse 15 hergestellt wird. Die Luft des Saugluftstroms 19 durchströmt die weitere Filterstufe 8 und strömt im Inneren axial in das Antriebsaggregat 5 ein. Nach Passieren der weiteren Filterstufe 8 gelangt der Saugluftstrom 19 in einen von dem Antriebsaggregatgehäuse 15 definierten Raum, in dem sich das Antriebsaggregat 5 befindet und kann aus diesem Raum durch die dritte Filterstufe 9 austreten und damit den Staubsauger 100 verlassen.During operation, the drive unit 5 generates a suction air flow 19, which is partially indicated by the arrows. First, the suction air flow 19 passes through the first filter stage 6, where it hits the inner wall 10 and a cyclone is formed. The coarse dirt is collected in the separator container 3 and the air of the suction air flow 19 flows back to the second filter stage 7. Then the suction air flow 19 passes through the second filter stage 7, which is provided with a fabric gauze, a plastic sieve, a punched grid or a metal gauze. can be. The suction air flow 19 then flows further inside the second filter stage 7 into a rear part of the vacuum cleaner 100. The suction air flow 19 then flows around the drive unit housing 15, preferably over an annular cross-sectional area 28 ( Fig.7 ) is guided around the drive unit 5 encapsulated by the drive unit housing 15. The annular cross-sectional area 28 ( Fig.7 ) can be partially derived from functional geometries 29 ( Fig.7 ) interrupted. The annular cross-sectional area 28 ( Fig.7 ) can be between 180°-270° on the circumference of the drive unit housing 15. The suction air flow 19 is then directed to the further filter stage 8 and flows around it. The air of the suction air flow 19 is preferably guided by means of an air guide geometry, e.g. a ramp, ribs or similar, into a 360° ring-shaped cross-sectional area around the central filter of the further filter stage 8 and can then flow around the further filter stage 8 in its entirety. The further filter stage 8 is a cylindrical filter which is sealed to the drive unit 5 and to the outside. The further filter stage 8 can also be a filter assembly 30 ( Fig.10 ), consisting of a first frame element 31 ( Fig.10 ) with a central opening 32 ( Fig.10 ) and a sealing element 33 ( Fig.10 ) to the drive unit housing 15, a second frame element 34 ( Fig.10 ) and a filter medium 35 ( Fig.10 ), which is inserted between the two frame elements 31, 34 ( Fig.10 ) and can preferably be held in its shape without additional support elements. The first frame element 31 ( Fig.10 ) can have different construction forms. A one-piece construction form can consist entirely of a hard component, including the sealing element, or entirely of a soft component. Furthermore, this first frame element 31 ( Fig.10 ) can be designed as a 2-component component, with a soft component area 36 ( Fig.10 ) the central opening 32 ( Fig.10 ) with the corresponding sealing element 33 ( Fig.10 ). Another design could include a two-part version of the first frame element. In this case, a soft component, which forms the central opening with the corresponding sealing element, is inserted into a hard component and formed into a unit by clamping or locking. Another two-part version could consist of a 2-component component, with the soft component area forming the central opening with the corresponding sealing element, which then forms a unit with an additional element by fastening. In addition, it is possible to form the first frame element from three components. In this case, a soft component, which forms the central opening with the corresponding sealing element, is installed between two hard components. The second frame element 34 ( Fig.10 ) contains the possibility of holding the filter medium 35 ( Fig.10 ), and a centrally arranged penetration geometry 37 ( Fig.10 ) for the cleaning axis 23 ( Fig.10 ), which is connected to the external actuating element 27 ( Fig.10 ) is also connected to a all-round collar 38 ( Fig.10 ), which is immersed in the separator tank outer housing 15. To ensure a tight seal between the central filter 8 and the drive unit housing 15, the sealing element 33 ( Fig.10 ). This sealing element 33 ( Fig.10 ) may be designed as a lip seal or H-shaped seal made of a rubber material or the like. Alternatively, the second frame element 34 ( Fig.10 ) can be designed as a 2-component component, consisting of a hard component as a carrier part and a soft component on the front side facing the device, which also creates a seal with the drive unit housing 15. The air of the suction air flow 19 flows through the further filter stage 8 and flows axially into the drive unit 5 on the inside. After passing through the further filter stage 8, the suction air flow 19 reaches a space defined by the drive unit housing 15, in which the drive unit 5 is located, and can exit from this space through the third filter stage 9 and thus leave the vacuum cleaner 100.

Fig. 2 zeigt eine perspektivische Ansicht des in Fig. 1 gezeigten Staubsaugers 100. Der Staubsauger 100 weist einen Handgriff 1 auf, der mit dem Antriebsaggregatbehälter 2 verbunden ist. Weiterhin weist der Staubsauger 100 ein Saugrohr 4 auf, das weiterhin optional mit einem Verlängerungsrohr 11 oder einer Bodendüse (nicht gezeigt) verbindbar ist. Die erste Filterstufe 6 (Fig. 1) der Abscheideeinheit 18 (Fig. 1) des Zyklon-Staubsaugers 100 bildet eine Längsachse 20 (Fig. 1) aus, wobei im Betrieb des Antriebsaggregats 5 (Fig. 1) der Saugluftstrom 19 (Fig. 1) einen Wirbelstrom um die Längsachse 20 (Fig. 1) der ersten Filterstufe 6 (Fig. 1) ausbildet, wobei die Längsachse 20 (Fig. 1) der ersten Filterstufe 6 (Fig. 1) parallel zur Längsachse 21 des Saugrohres 21 ausgerichtet ist. Diese parallele Ausrichtung der Längsachsen 20, 21 der ersten Filterstufe 6 (Fig. 1) und des Saugrohrs 4 ist vorteilhaft für die Realisierung eines Staubsaugers 100 mit einer kompakten Bauform. Fig.2 shows a perspective view of the Fig.1 shown vacuum cleaner 100. The vacuum cleaner 100 has a handle 1 which is connected to the drive unit container 2. Furthermore, the vacuum cleaner 100 has a suction pipe 4 which can also optionally be connected to an extension pipe 11 or a floor nozzle (not shown). The first filter stage 6 ( Fig.1 ) of the separation unit 18 ( Fig.1 ) of the cyclone vacuum cleaner 100 forms a longitudinal axis 20 ( Fig.1 ), whereby during operation of the drive unit 5 ( Fig.1 ) the suction air flow 19 ( Fig.1 ) an eddy current around the longitudinal axis 20 ( Fig.1 ) of the first filter stage 6 ( Fig.1 ), with the longitudinal axis 20 ( Fig.1 ) of the first filter stage 6 ( Fig.1 ) is aligned parallel to the longitudinal axis 21 of the suction pipe 21. This parallel alignment of the longitudinal axes 20, 21 of the first filter stage 6 ( Fig.1 ) and the suction pipe 4 is advantageous for the realization of a vacuum cleaner 100 with a compact design.

Bei Betrieb strömt der Saugluftstrom 19 zuerst durch das Verlängerungsrohr 11, passiert das Saugrohr 4, strömt dann aus dem Saugrohr 4 in den Abscheidebehälter 3 und dann aus diesem in den Antriebsaggregatbehälter 2 und verlässt anschließend den Staubsauger 100.During operation, the suction air flow 19 first flows through the extension pipe 11, passes the suction pipe 4, then flows from the suction pipe 4 into the separation container 3 and then from there into the drive unit container 2 and then leaves the vacuum cleaner 100.

Fig. 3 zeigt eine Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers 100 entlang der Linie III-III. Das Saugrohr 4 ist vor der ersten Filterstufe (nicht gezeigt) angeordnet und weist einen kreisrunden Querschnitt mit einem Saugrohr-Durchmesser D auf. Fig.3 shows a cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line III-III. The suction pipe 4 is arranged in front of the first filter stage (not shown) and has a circular cross-section with a suction pipe diameter D.

Fig. 4 zeigt eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers 100 entlang der Linie IV-IV. Das Saugrohr 4 ist über einen Einlaufschlitz 14 mit dem Abscheidebehälter 3 verbunden, der tangential in diesen und die erste Filterstufe 6 einläuft. Bei Betrieb wird der Saugluftstrom 19 aus dem Saugrohr 4 an die Innenwand (nicht gezeigt) des Abscheidebehälters 3 tangential geleitet, so dass sich ein Zyklon (nicht gezeigt) in der ersten Filterstufe 6 ausbildet. Fig.4 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line IV-IV. The suction pipe 4 is connected to the separating container 3 via an inlet slot 14, which runs tangentially into the latter and the first filter stage 6. During operation, the suction air flow 19 from the suction pipe 4 is directed tangentially to the inner wall (not shown) of the separating container 3, so that a cyclone (not shown) is formed in the first filter stage 6.

Fig. 5 zeigt eine weitere Teil-Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers 100 durch den Einlaufschlitz 14. Der Einlaufschlitz 14 weist einen rechteckigen Querschnitt mit einer Breite b und einer Höhe h auf. Der rechteckige Querschnitt weist eine Fläche auf, die etwa gleich zu der Fläche des in Fig. 3 gezeigten Saugrohr-Durchmessers ist. Fig.5 shows another partial cross-sectional view of the Fig.2 shown vacuum cleaner 100 through the inlet slot 14. The inlet slot 14 has a rectangular cross-section with a width b and a height h. The rectangular cross-section has an area which is approximately equal to the area of the in Fig.3 shown intake manifold diameter.

Fig. 6 zeigt eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers 100 entlang der Linie VI-VI. Der Vorfilter oder ein strömungstechnisch nach dem Vorfilter liegendes Innenrohr (nicht gezeigt) der zweiten Filterstufe 7 weist einen kreisförmigen Querschnitt mit einem Filterstufen-Durchmesser d auf. Der Filterstufen-Durchmesser d weist eine Fläche auf, die etwa gleich zu der Fläche des in Fig. 3 gezeigten Saugrohr-Durchmessers ist. Fig.6 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line VI-VI. The pre-filter or an inner tube (not shown) of the second filter stage 7 located downstream of the pre-filter has a circular cross-section with a filter stage diameter d. The filter stage diameter d has an area that is approximately equal to the area of the Fig.3 shown intake manifold diameter.

Fig. 7 zeigt eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers 100 entlang der Linie VII-VII. Vor der weiteren Filterstufe (nicht gezeigt) ist das Antriebsaggregat 5 in dem Antriebsaggregatgehäuse 15 angeordnet. Eine Fläche des Querschnitts zwischen dem Antriebsaggregatgehäuse 15 und dem Antriebsaggregatbehälter-Außengehäuse 12 ist etwa gleich zu der Fläche des in Fig. 3 gezeigten Saugrohr-Durchmessers. Der Antriebsaggregatbehälter 2 ist mit dem Handgriff 1 verbunden. Bei Betrieb strömt der Saugluftstrom 19 zwischen dem Antriebsaggregatgehäuse 15 und dem Antriebsaggregatbehälter-Außengehäuse 12 in einen kreissegmentförmigen Strömungsquerschnitt, der durch Funktionsgeometrien (nicht gezeigt) unterbrochen ist. Fig.7 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line VII-VII. Before the further filter stage (not shown), the drive unit 5 is arranged in the drive unit housing 15. An area of the cross section between the drive unit housing 15 and the drive unit container outer housing 12 is approximately equal to the area of the Fig.3 shown suction pipe diameter. The drive unit container 2 is connected to the handle 1. During operation, the suction air flow 19 flows between the drive unit housing 15 and the drive unit container outer housing 12 in a circular segment-shaped flow cross-section which is interrupted by functional geometries (not shown).

Fig. 8 zeigt eine weitere Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers 100 entlang der Linie VIII-VIII. Die weitere Filterstufe 8 ist im Antriebsaggregatbehälter 2 angeordnet und von dem Antriebsaggregat-Außengehäuse 12 umgeben. Sie ist als Zentralfilter ausgebildet. Das Antriebsaggregatgehäuse 15 weist eine Öffnung 16 auf. Bei Betrieb strömt der Saugluftstrom 19 durch den Zentralfilter und anschließend durch die Öffnung 16 in das Antriebsaggregatgehäuse 15. Fig.8 shows another cross-sectional view of the Fig.2 shown vacuum cleaner 100 along the line VIII-VIII. The further filter stage 8 is arranged in the drive unit container 2 and surrounded by the drive unit outer housing 12. It is designed as a central filter. The drive unit housing 15 has an opening 16. During operation, the suction air flow 19 flows through the central filter and then through the opening 16 into the drive unit housing 15.

Fig. 9 zeigt eine weitere Teil-Querschnittsansicht des in Fig. 2 gezeigten Staubsaugers 100. Die zweite Filterstufe 7 ist in Richtung des Pfeils aus dem Abscheidebehälter 3 entnehmbar, während die weitere Filterstufe 8 in Richtung des Pfeils aus dem Antriebsaggregatbehälter 2 entnehmbar ist. Die zweite Filterstufe 7 und die weitere Filterstufe 8 sind daher in entgegengesetzt Richtungen entnehmbar. Fig.9 shows another partial cross-sectional view of the Fig.2 shown vacuum cleaner 100. The second filter stage 7 can be removed in the direction of the arrow from the separating container 3, while the further filter stage 8 can be removed in the direction of the arrow from the drive unit container 2. The second filter stage 7 and the further filter stage 8 can therefore be removed in opposite directions.

Fig. 10 zeigt die entnehmbare, weitere Filterstufe 8 als Filterbaugruppe 30 in einer Einzelansicht, während die Fig. 11 diese Filterbaugruppe 30 in dem Antriebsaggregatbehälter -Außengehäuse 12 eingesetzt zeigt. Die Filterbaugruppe 30 der weiteren Filterstufe 8 besteht aus einem ersten Rahmenelement 31 mit einer zentralen Öffnung 32 und einem Dichtelement 33 zum Antriebsaggregatgehäuse 15 (Fig. 1), einem zweiten Rahmenelement 34 und einem Filtermedium 35, welches zwischen die beiden Rahmenelemente 31, 34 verklebt wird und auch bevorzugt ohne weitere Stützelemente stabil in seiner Form gehalten werden kann. Die hier gezeigte Ausführung des ersten Rahmenelements 31, welche in der Detailansicht von Fig. 11b vergrößerst zu sehen ist, stellt ein 2-Komponentenbauteil dar, wobei ein Weichkomponentenbereich 36 die zentrale Öffnung 32 mit dem entsprechenden Dichtelement 33 bildet. Am zweiten Rahmenelement 34 ist neben der Aufnahme für das Filtermediums 35, eine zentral angeordnete Durchtauchgeometrie 37 für die Reinigungsachse 23 vorgesehen. Die Reinigungsachse 23 ist hierdurch mit dem außenliegenden Betätigungselement 27 verbunden. Außerdem verfügt das zweite Rahmenelement über einen umlaufenden Kragen 38, welcher in das Abscheidebehälter-Außengehäuse 15 (Fig. 11) eintaucht. Die Durchströmungsrichtung des Filtermediums 35 von außen nach innen, bewirkt die Ablagerung des Feinstaubes an der Außenseite des Filtermediums 35. Der Zentralfilter der weiteren Filterstufe 8 weist eine zylindrische Grundform auf, wobei das Filtermedium 35 plissiert, entlang der Zylinderform angeordnet ist und einen Innenbereich des Zentralfilters 8 von einem Außenbereich des Zentralfilters 8 abtrennt. Mit der Durchströmung des Zentralfilters 8 von außen nach innen, werden Schmutzpartikel aus dem Saugluftstrom 19 (Fig. 1) an der Außenseite des Filtermediums 35 abgeschieden und der gereinigte Saugluftstrom 19 (Fig. 1) strömt in den Innenbereich des Zentralfilters 8. Zur Rückreinigung des Filtermediums 35 ist eine mechanische Impulsgebung vorgesehen, die den anhaftenden Schmutz auf der Filteraußenseite löst. Dies geschieht hier durch einen Rotationsmechanismus 23, 24, 27 im Inneren der Filterbaugruppe 30. Die mit dem außenliegenden, bevorzugt als Drehknopf 27 ausgebildeten, Betätigungselement verbundene Reinigungsachse 23 taucht hierbei mit mehreren Flügeln 24 rückwärtig in das Filtermedium 35 ein. Diese mechanische Abreinigungsvorrichtung 22 zum Lösen von an dem Filtermedium 35 des Zentralfilters 8 anhaftendem Schmutz weist eine sich im Zentralfilter 8 zum Lösen des anhaftenden Schmutzes drehende Reinigungsachse 23 auf, die mit Flügeln als Impulsgebern 24 versehen ist. Diese sind dazu ausgebildet, aus der Drehbewegung der Reinigungsachse 23 heraus den anhaftenden Schmutz lösende Impulse auf das Filtermedium 35 auszuüben. Hierdurch ist das Lösen von an dem Filtermedium 35 anhaftendem Schmutz einfach möglich, da die ausgelösten Impulse die Schmutzpartikel abklopfen. Wird also vorzugsweise händisch vom Benutzer des Staubsaugers 100 eine Rotation der Reinigungsachse 23 über den Drehknopf 27 durchgeführt, löst sich der gesammelte Staub vom Filtermedium 35 ab. Die durch die Impulse gelösten Schmutzpartikel fallen von dem Filtermedium 35 des Zentralfilters 8 ab und können so von Zeit zu Zeit aus dem Filterraum, in dem der Zentralfilter 8 angeordnet ist, entfernt werden. Über das Öffnen einer Entleerungsklappe am Antriebsaggregatbehälter 2 kann das Antriebsaggregatbehälter-Außengehäuse 12 geöffnet werden und der vom Filtermedium 35 der weiteren Filterstufe 8 durch die Rückreinigung abgefallene Staub an dem Antriebsaggregatgehäuse 15 vorbei über den Antriebsaggregatbehälter 2 zusammen mit dem über die erste Filterstufe 6 und die zweite Filterstufe 7 abgeschiedenen Schmutz entleert werden. Mit der Abreinigung des Zentralfilters 8 ohne dessen Herausnahme ist ein einfaches Hygienekonzept gegeben, da direkte Kontakte mit dem Staub minimiert werden. Alternativ kann auch die Filterbaugruppe 30 der weiteren Filterstufe 8 zur Reinigung aus dem Abscheidebehälter 3 entnommen werden. Zur Sicherstellung einer Dichtigkeit zwischen dem Zentralfilter 8 und dem Antriebsaggregatbehälter-Außengehäuse 12 trägt das Dichtelement 33 bei, welches in Figur 11a in einer vergrößerten Detailansicht gezeigt ist. Dieses Dichtelement 33 kann als Lippendichtung oder H-förmige Dichtung aus einem Gummimaterial oder ähnliches ausgestaltet sein. Fig.10 shows the removable, further filter stage 8 as filter assembly 30 in a single view, while the Fig. 11 this filter assembly 30 is shown inserted in the drive unit container outer housing 12. The filter assembly 30 of the further filter stage 8 consists of a first frame element 31 with a central opening 32 and a sealing element 33 to the drive unit housing 15 ( Fig.1 ), a second frame element 34 and a Filter medium 35, which is glued between the two frame elements 31, 34 and can also preferably be kept stable in its shape without further support elements. The design of the first frame element 31 shown here, which in the detailed view of Fig. 11b can be seen enlarged, represents a 2-component component, with a soft component area 36 forming the central opening 32 with the corresponding sealing element 33. On the second frame element 34, in addition to the receptacle for the filter medium 35, a centrally arranged penetration geometry 37 is provided for the cleaning axis 23. The cleaning axis 23 is thereby connected to the external actuating element 27. In addition, the second frame element has a circumferential collar 38, which is inserted into the separating container outer housing 15 ( Fig. 11 ). The flow direction of the filter medium 35 from the outside to the inside causes the fine dust to be deposited on the outside of the filter medium 35. The central filter of the further filter stage 8 has a cylindrical basic shape, with the filter medium 35 being pleated, arranged along the cylindrical shape and separating an inner area of the central filter 8 from an outer area of the central filter 8. With the flow through the central filter 8 from the outside to the inside, dirt particles are removed from the suction air flow 19 ( Fig.1 ) is separated on the outside of the filter medium 35 and the cleaned suction air flow 19 ( Fig.1 ) flows into the interior of the central filter 8. For the back-cleaning of the filter medium 35, a mechanical pulse is provided which loosens the adhering dirt on the outside of the filter. This is done here by a rotation mechanism 23, 24, 27 inside the filter assembly 30. The cleaning axis 23, which is connected to the external actuating element, preferably designed as a rotary knob 27, dips backwards into the filter medium 35 with several blades 24. This mechanical cleaning device 22 for loosening dirt adhering to the filter medium 35 of the central filter 8 has a cleaning axis 23 which rotates in the central filter 8 to loosen the adhering dirt and which is provided with blades as pulse generators 24. These are designed to exert pulses on the filter medium 35 from the rotational movement of the cleaning axis 23 which loosen the adhering dirt. This makes it easy to remove dirt adhering to the filter medium 35, since the triggered impulses knock off the dirt particles. If the user of the vacuum cleaner 100 rotates the cleaning axis 23, preferably manually, using the rotary knob 27, the collected dust is released from the filter medium 35. The dirt particles released by the impulses fall off the filter medium 35 of the central filter 8 and can thus be removed from time to time from the filter chamber in which the central filter 8 is arranged. By opening a drain flap on the drive unit container 2, the drive unit container outer housing 12 can be opened and the dust that has fallen off the filter medium 35 of the further filter stage 8 as a result of the back cleaning can be passed past the drive unit housing 15 via the drive unit container 2 can be emptied together with the dirt separated via the first filter stage 6 and the second filter stage 7. Cleaning the central filter 8 without removing it provides a simple hygiene concept, as direct contact with the dust is minimized. Alternatively, the filter assembly 30 of the further filter stage 8 can be removed from the separating container 3 for cleaning. The sealing element 33, which is in Figure 11a is shown in an enlarged detailed view. This sealing element 33 can be designed as a lip seal or H-shaped seal made of a rubber material or the like.

Natürlich ist die Erfindung nicht auf das dargestellte Ausführungsbeispiel beschränkt. Weitere Ausgestaltungen sind möglich, ohne den Grundgedanken zu verlassen.Of course, the invention is not limited to the embodiment shown. Further embodiments are possible without departing from the basic idea.

BezugszeichenlisteList of reference symbols

bb
BreiteWidth
dd
Filterstufen-DurchmesserFilter stage diameter
DD
Saugrohr-DurchmesserIntake manifold diameter
hH
HöheHeight
11
HandgriffHandle
22
AntriebsaggregatbehälterDrive unit container
33
AbscheidebehälterSeparation tank
44
SaugrohrIntake manifold
55
AntriebsaggregatDrive unit
66
erste Filterstufefirst filter stage
77
zweite Filterstufesecond filter stage
88th
weitere Filterstufefurther filter stage
99
dritte Filterstufethird filter stage
1010
InnenwandInterior wall
1111
VerlängerungsrohrExtension tube
1212
Antriebsaggregatbehälter-AußengehäuseDrive unit container outer casing
1313
Abscheidebehälter-AußengehäuseSeparator tank outer casing
1414
EinlaufschlitzInlet slot
1515
AntriebsaggregatgehäuseDrive unit housing
1616
Öffnungopening
1717
TauchrohrDip tube
1818
AbscheideeinheitSeparation unit
1919
SaugluftstromSuction air flow
2020
Längsachse (erste Filterstufe)Longitudinal axis (first filter stage)
2121
Längsachse (Saugrohr)Longitudinal axis (intake manifold)
2222
AbreinigungsvorrichtungCleaning device
2323
ReinigungsachseCleaning axis
2424
ImpulsgeberImpulse generator
2525
DeckelLid
2626
Öffnungopening
2727
BetätigungselementActuator
2828
ringförmige Querschnittsflächeannular cross-sectional area
2929
FunktionsgeometrienFunctional geometries
3030
FilterbaugruppeFilter assembly
3131
erstes Rahmenelementfirst frame element
3232
zentrale Öffnungcentral opening
3333
DichtelementSealing element
3434
zweites Rahmenelementsecond frame element
3535
FiltermediumFilter medium
3636
WeichkomponentenbereichSoft component area
3737
DurchtauchgeometrieDiving geometry
3838
Kragencollar
100100
StaubsaugerVacuum cleaner

Claims (10)

  1. Hand-held cyclone vacuum cleaner (100) for cleaning and caring for floor surfaces, comprising a drive unit (5) for generating a vacuum for picking up suctioned material by means of a suction air flow (19), a separator unit (18) for separating suctioned material from the suction air flow (19), the separator unit (18) having the drive unit (5) for generating a suction air flow (19), and at least a first filter stage (6), a second filter stage (7) and a third filter stage (9);
    the drive unit (5) being arranged downstream in the suction air flow (19) of the second filter stage (7) and upstream of the third filter stage (9) in the suction air flow (19) in a drive unit housing (15), the generated suction air flow (19) first passing through the first filter stage (6), then the second filter stage (7) and finally a further filter stage (8), the suction air flow (19) generated during operation of the drive unit (5) flowing around the drive unit (5), the third filter stage (9) being arranged fluidically downstream of the further filter stage (8) and having an exhaust air filter element,
    characterised in that the drive unit (5) is arranged in the drive unit housing (5) such that an inflow direction of the suction air flow (19) into the drive unit (5) is opposite to a flow direction of the suction air flow (19) from the second filter stage (7) to the further filter stage (8).
  2. Vacuum cleaner (100) according to claim 1, characterised in that the first filter stage (6) has a cyclone generated by the drive unit (5) during operation, the second filter stage (7) has a prefilter and the further filter stage (8) has a central filter, and the prefilter and the central filter being arranged axially, the first filter stage (6), the second filter stage (7) and the further filter stage (8) being fluidically arranged one behind the other in a specified sequence.
  3. Vacuum cleaner (100) according to either of the preceding claims, characterised in that the second filter stage (7) can be removed from the separator unit (18) in a removal direction which is opposite to a further removal direction in which the further filter stage (8) can be removed from the separator unit (18).
  4. Vacuum cleaner (100) according to any of the preceding claims, characterised in that the exhaust air filter element is preferably designed as a filter or a flap in an outer housing of the separator unit (18).
  5. Vacuum cleaner (100) according to any of the preceding claims, characterised in that the separator unit (18) has a drive unit container (2) and a separator container (3), the drive unit container (2) containing the drive unit housing (15), the drive unit (5) and the further filter stage (8), and the separator container (3) having the first and the second filter stage (6, 7), and the drive unit container (3) and the separator container (3) being arranged adjacent to one another and each extending along parallel longitudinal axes.
  6. Vacuum cleaner (100) according to any of the preceding claims, characterised in that the drive unit housing (15) is surrounded by a circular segment-shaped flow cross-section through which the suction air flow (19) flows during operation before it reaches the further filter stage (8).
  7. Vacuum cleaner (100) according to any of the preceding claims, characterised in that the first filter stage (6) of the separator unit (18) of the cyclone vacuum cleaner forms a longitudinal axis (20), the suction air flow (19) forming, during operation of the drive unit (5), an eddy current around the longitudinal axis (20) of the first filter stage (6), the longitudinal axis (20) of the first filter stage (6) being aligned in parallel with the longitudinal axis (21) of a suction pipe (4).
  8. Vacuum cleaner (100) according to any of the preceding claims, characterised in that the further filter stage (8) has a central filter through which the generated suction air flow (19) flows from the outside to the inside.
  9. Vacuum cleaner (100) according to claim 8, characterised in that a mechanical cleaning device (22) is provided for loosening dirt which adheres to the filter medium of the central filter (8), the cleaning device (22) having a cleaning shaft (23) which rotates in the central filter (8) to loosen the adhering dirt and is provided with pulse generators (24) which are designed to exert pulses on the filter medium which loosen the adhering dirt from the rotational movement of the cleaning axis (23).
  10. Vacuum cleaner (100) according to claim 9, characterised in that the central filter (8) is arranged in a separator container outer housing (13), the separator container outer housing (13) being provided with an opening (26) which can be covered by a lid (25), via which opening the central filter (8) can be removed from the separator container outer housing (13) for filter replacement and/or for filter cleaning and/or for emptying the separator container outer housing (13), the cover (25) being provided with an actuating element (27), via which the cleaning shaft (23) is actuated for loosening the adhering dirt in the central filter (8) accommodated in the separator container outer housing (13).
EP21169765.1A 2020-05-05 2021-04-22 Hand-guided cyclone vacuum cleaner Active EP3906831B1 (en)

Applications Claiming Priority (3)

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DE102020112085 2020-05-05
BE20215006A BE1028991B1 (en) 2021-01-05 2021-01-05 Handheld cyclone vacuum cleaner
DE102021100074 2021-01-05

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CN113598646A (en) 2021-11-05
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