EP3626145B1 - Cyclonic separation device for home vacuum cleaner - Google Patents

Cyclonic separation device for home vacuum cleaner Download PDF

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Publication number
EP3626145B1
EP3626145B1 EP19190390.5A EP19190390A EP3626145B1 EP 3626145 B1 EP3626145 B1 EP 3626145B1 EP 19190390 A EP19190390 A EP 19190390A EP 3626145 B1 EP3626145 B1 EP 3626145B1
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EP
European Patent Office
Prior art keywords
cyclonic
separation
separation stage
separation device
separators
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.)
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Application number
EP19190390.5A
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German (de)
French (fr)
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EP3626145A1 (en
Inventor
Fabien David
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SEB SA
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SEB SA
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608—Cyclonic chamber constructions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/165—Construction of inlets
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • 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
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1625—Multiple arrangement thereof for series flow
    • 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
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1625—Multiple arrangement thereof for series flow
    • A47L9/1633—Concentric cyclones
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles

Definitions

  • the present invention relates to a cyclonic separation device for a domestic vacuum cleaner, and a domestic vacuum cleaner comprising such a cyclonic separation device.
  • the air inlet openings of the various cyclone separators are generally oriented towards the outside of the second stage of separation, so that the flow of air entering the second stage of separation can easily penetrate into the various cyclone separators.
  • WO2010097612A1 disclose separation devices comprising an upstream separator and a set of downstream cyclones.
  • the present invention aims to remedy all or part of these drawbacks.
  • the technical problem underlying the invention consists in particular in providing a cyclonic separation device with a reliable and economical structure, while guaranteeing waste separation performance and improved acoustic performance.
  • air inlet opening oriented towards the central region it is meant that, seen in a reference plane perpendicular to the central longitudinal axis of the second separation stage, the normal to an opening plane defined by the opening air inlet faces inside the center circle passing through the center of the air inlet opening.
  • the cyclonic separation device according to the present invention has improved separation performance compared to the cyclonic separation devices of the prior art.
  • the cyclonic separation device may also have one or more of the following characteristics, taken alone or in combination.
  • the air inlet openings of the cyclone separators of the second set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis of the second separation stage and for each cyclone separator of the second set, a straight line passing through the central longitudinal axis of the second separation stage and the center of the air inlet opening of a cyclone separator of the second set defines an angle of inclination comprised between -45 and 45° with respect to a normal to an opening plane defined by said air inlet opening.
  • Such a configuration of the air inlet openings of the cyclone separators of the second set makes it possible to further promote the air supply to the cyclone separators of the first set to obtain a better distribution of the air flow between the various cyclone separators of the second separation stage.
  • the cyclone separators of the second set are arranged in a peripheral region of the second separation stage.
  • the first set of cyclonic separators comprises cyclonic separators which are distributed, and preferably evenly distributed, around the central longitudinal axis of the second separation stage and which are equidistant with respect to the central longitudinal axis of the second separation stage, and a cyclonic separator which extends substantially along the central longitudinal axis of the second separation stage.
  • the air inlet openings of the cyclone separators of the second set are oriented substantially towards the central longitudinal axis of the second separation stage.
  • the air inlet openings of the cyclone separators of the first set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis of the second separation stage and for each cyclone separator of the first set, a straight line passing through the central longitudinal axis of the second separation stage and the center of the air inlet opening of a cyclone separator of the first set defines an angle of inclination comprised between 45 and 180° relative to a normal to an opening plane defined by said air inlet opening.
  • Such a configuration of the air inlet openings of the separators cyclones of the first set makes it possible to further improve the distribution of the air flow between the various cyclone separators of the second stage of separation.
  • the angle of inclination is between 60 and 120°, advantageously between 70 and 110°, and for example between 80 and 100°.
  • the air inlet openings of the cyclone separators of the first set are oriented substantially tangentially with respect to the central longitudinal axis of the second separation stage.
  • the cyclone separators of the second set are equidistant from the central longitudinal axis of the second separation stage.
  • the first separation stage comprises a central longitudinal axis which substantially coincides with the central longitudinal axis of the second separation stage.
  • each cyclone separator of the plurality of cyclone separators comprises a longitudinal axis, the longitudinal axis of each separator of the second set being inclined towards the central longitudinal axis of the second separation stage.
  • each cyclone separator of the plurality of cyclone separators opens tangentially into the respective secondary separation chamber.
  • the air intake duct of each cyclone separator of the plurality of cyclone separators extends helically.
  • each cyclone separator of the plurality of cyclone separators comprises a central discharge tube comprising a first end portion opening into the respective secondary partition and a second end portion opposite the respective first end portion.
  • the waste collection container comprises an upper peripheral edge
  • the cyclonic separation device further comprises a closing lid fixed, preferably in a removable manner, to the upper peripheral edge of the container waste collection.
  • the air discharge opening is provided on the closure cover.
  • each central delivery tube extends through a respective passage orifice provided on the closure cover.
  • each central delivery tube opens into an internal chamber delimited at least partially by the closure cover.
  • the closure cover comprises a covering wall which partially covers the cyclone separators of the plurality of cyclone separators and which extends transversely, and for example substantially perpendicularly, to the central longitudinal axis of the second stage of separation, the various passage orifices being provided on the covering wall of the closure cover.
  • the first separation stage comprises a filtration grid and a primary separation chamber delimited at least partially by a side wall of the waste collection container and by the filtration grid.
  • the primary separation chamber is a primary cyclonic separation chamber.
  • the tubular bodies of the cyclone separators of the plurality of cyclone separators are located under the grid of filtration.
  • the air inlet openings of the cyclone separators of the plurality of cyclone separators are located in an internal volume delimited laterally by the filtration grid.
  • the filtration grid is of substantially cylindrical shape.
  • the filtration grid comprises a plurality of evacuation orifices intended for the evacuation of an air flow in the direction of the second stage of separation.
  • the filtration grid at least partially separates the first stage of separation and the second stage of separation.
  • the filtration grid is located in an upper part of the waste collection container.
  • the first separation stage comprises at least one deflection rib extending into the primary separation chamber and configured to reduce the velocity of the air flow flowing into the separation chamber primary.
  • the first separation stage is located around the second separation stage.
  • Such an arrangement of the second separation stage, whose cyclonic separators generate noise, makes it possible to limit the noise generated by the cyclonic separation device.
  • the first waste collection compartment is located below the primary separation chamber.
  • the second waste collection compartment is located below the tubular bodies of the cyclone separators.
  • the tubular body of each cyclone separator of the plurality of cyclone separators comprises an upper part having a generally cylindrical shape, and a lower part which is frustoconical and which converges downwards.
  • the cyclonic separation device further comprises a filtration element configured to filter the air discharged by the second separation stage.
  • a filtration element configured to filter the air discharged by the second separation stage.
  • the presence of such a filtration element makes it possible in particular to retain the very fine dust which would not have been separated by the first and second separation stages, and therefore to improve the separation performance of the cyclonic separation device.
  • such a filtration element makes it possible to partially absorb the noise generated by the flow of the air flow in the various central delivery tubes, and thus to make the cyclonic separation device quieter.
  • the filtration element comprises a filtration wall provided with a plurality of filtration orifices.
  • the filtration wall extends transversely, and preferably substantially perpendicularly, to the central longitudinal axis of the second separation stage.
  • the filtration element can for example be a micro-filter.
  • the filtration element has the general shape of a disc.
  • the filter element can for example be a foam filter or a HEPA filter.
  • the internal chamber is delimited by the closure cover and the filtration element.
  • the closure cover comprises an upper housing in which the filtration element is at least partially housed.
  • the tubular body of each cyclone separator comprises a waste outlet opening connected to the second waste collection compartment.
  • each waste outlet opening is located in the lower part of the respective tubular body.
  • the air intake opening opens tangentially into the waste collection container, and more particularly into the primary separation chamber.
  • the air intake opening opens into an upper part of the waste collection container, and more particularly of the primary separation chamber.
  • the cyclonic separation device comprises a one-piece separation element forming the filtration grid and the tubular bodies of the cyclonic separators.
  • the one-piece separation element is removably fixed to a bottom wall of the waste collection container.
  • the one-piece separation element further comprises a cylindrical bottom wall removably fixed to the bottom wall of the waste collection container, the cylindrical bottom wall comprising an inner surface delimiting at least partially the second waste collection compartment and an outer surface at least partially delimiting the first waste collection compartment.
  • the at least one deflection rib is provided on the one-piece separation element.
  • the closure cover is fixed, preferably in a removable manner, to an upper peripheral edge of the filtration grid.
  • the present invention further relates to a household vacuum cleaner comprising a cyclonic separation device according to the present invention.
  • the domestic vacuum cleaner is a broom vacuum cleaner or a sled vacuum cleaner.
  • the figures 1 and 2 represent a domestic vacuum cleaner 1, and more particularly a sled vacuum cleaner, comprising a frame 2 supported by wheels 3 facilitating the movements of the domestic vacuum cleaner 1 during its use.
  • the frame 2 comprises a motorized fan unit intended to generate a vacuum, an electric cable reel and control electronics as well as manual control devices making it possible to control the operation of the domestic vacuum cleaner 1.
  • the domestic vacuum cleaner 1 further comprises a cyclonic separation device 4 removably mounted on the frame 2, and a connecting duct 5 providing an air connection between the motor-driven fan and the cyclonic separation device 4 so that the motor -ventilateur is able to establish a depression in the latter during the operation of the fan motor.
  • the domestic vacuum cleaner 1 further comprises a connection mouth 6 fluidly connected to the connecting conduit 5 and intended to be connected to a chain of suction accessories, not shown in the figures, generally comprising a suction head adapted to the end of a rigid telescopic tube connected to the connection mouth 6 by a flexible tube so that the suction head is in aeraulic connection with the motorized fan via the cyclonic separation device 4 and the connecting duct 5.
  • the cyclonic separation device 4 comprises a waste collection container 7 comprising an air intake opening 8 and an air discharge opening 9.
  • the cyclonic separation device 4 further comprises a first separation stage 11 disposed in the waste collection container 7 and configured to separate waste from the air entering the waste collection container 7 through the inlet opening. air 8, and a second separation stage 12 also disposed in the waste collection container 7 and configured to separate waste from the air discharged by the first separation stage 11.
  • the second separation stage 12 has a central longitudinal axis A which substantially coincides with a central longitudinal axis of the first stage of separation 11, and the first stage of separation 11 is located around the second separation stage 12.
  • the first separation stage 11 more particularly comprises a filtration grid 13, which is generally cylindrical and which is arranged in an upper part of the waste collection container 7, and a primary separation chamber 14 partially delimited by a side wall 15 of the waste collection container 7 and by the filtration grid 13.
  • the primary separation chamber 14 is annular and forms a cyclonic separation chamber, and the air intake opening 8 opens tangentially into an upper part of the primary separation chamber 14.
  • the filtration grid 13 comprises a plurality of evacuation orifices 16 intended for the evacuation of an air flow in the direction of the second stage of separation 12, and at least partially separates the first stage of separation 11 and the second separation stage 12.
  • the first separation stage 11 further comprises a first waste collection compartment 17 located below the primary separation chamber 14 and configured to collect the waste separated by the first separation stage 11.
  • the second separation stage 12 comprises a plurality of cyclonic separators 18 arranged in parallel with respect to each other.
  • Each cyclone separator 18 comprises a tubular body 19 which delimits a secondary separation chamber 21, and an air intake duct 22 which extends helically and which comprises an air inlet opening 23 and an outlet opening air 24 opening tangentially into the respective secondary separation chamber 21.
  • Each cyclone separator 18 further comprises a central discharge tube 25 comprising a first end portion 25.1 opening into the respective secondary separation chamber 21 and a second end portion 25.2 opposite the respective first end portion 25.1.
  • the tubular body 19 and the central discharge tube 25 of each cyclone separator 18 can be manufactured independently of each other, in order to facilitate the manufacture of each cyclone separator 18.
  • the tubular body 19 of each cyclone separator 18 comprises more particularly an upper part 19.1 having a generally cylindrical shape, and a lower part 19.2 which is tapered and which converges downwards.
  • the tubular body 19 of each cyclone separator 18 comprises a waste outlet opening 26 located in the lower part of the respective tubular body 19.
  • the tubular bodies 19 of the cyclone separators 18 are located under the filtration grid 13, while the air inlet openings 23 of the cyclone separators 18 are located in an internal volume 27 delimited laterally through the filtration grid 13.
  • the second separation stage 12 also includes a second waste collection compartment 28 separated from the first waste collection compartment 17 and configured to collect the waste separated by the second separation stage 12.
  • the second waste collection compartment 28 is advantageously located below the tubular bodies 19 of the cyclone separators 18, so that the waste evacuated by the waste outlet openings 26 can fall by gravity into the second waste collection compartment 28.
  • the plurality of cyclone separators comprises a first set of cyclone separators comprising cyclone separators 18.1 which are arranged in a central region of the second separation stage 12, and a second set of cyclone separators comprising cyclone separators 18.2 which are regularly distributed around the central longitudinal axis A of the second separation stage 12 and which are arranged around the cyclone separators 18.1 of the first set.
  • separators cyclones 18.2 of the second set are arranged in a peripheral region of the second separation stage 12, and are equidistant from the central longitudinal axis A of the second separation stage 12.
  • the air inlet openings 23 of the cyclone separators 18.2 of the second set are oriented towards the central region of the second separation stage 12, that is to say that, seen in a reference plane perpendicular to the central longitudinal axis A of the second separation stage 12, the normal N to an opening plane defined by the air inlet opening 23 is oriented towards the inside of the circle with center A passing through the center of the air inlet opening 23.
  • the air inlet openings 23 of the cyclone separators 18.2 of the second set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis A of the second separation stage 12 and for each cyclone separator 18.2 of the second set, a straight line D passing through the central longitudinal axis A of the second separation stage 12 and the center of the air inlet opening 23 of a cyclone separator 18.2 of the second set defines an angle of inclination ⁇ between -90° and 90° with respect to a normal N to an opening plane defined by said air inlet opening 23.
  • the angle of inclination ⁇ is between -90° and 90°, advantageously between -45° and 45°, and for example between -10° and 10°.
  • the air inlet openings 23 of the cyclone separators 18.2 of the second set are oriented substantially towards the central longitudinal axis A of the second separation stage 12.
  • Such an orientation of the air inlet openings 23 of the cyclone separators 18.2 of the second set promotes the air supply to the cyclone separators 18.1 of the first set, and therefore a better distribution of the air flow between the various cyclone separators 18 of the second separation stage 12.
  • each cyclone separator 18.2 of the second set is inclined towards the central longitudinal axis A of the second separation stage 12 such that the lower end of the tubular body 19 of each cyclone separator 18.2 of the second set is brought closer to the central longitudinal axis A.
  • the first set of cyclonic separators comprises cyclonic separators 18.1 which are regularly distributed around the central longitudinal axis A of the second separation stage 12 and which are equidistant with respect to the longitudinal axis central A, and a cyclone separator 18.1 which extends substantially along the central longitudinal axis A.
  • the air inlet openings 23 of the cyclone separators 18.1 of the first set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis A of the second separation stage 12 and for each cyclone separator 18.1 of the first set, a straight line D passing through the central longitudinal axis A of the second separation stage 12 and the center of the air inlet opening 23 of a cyclone separator 18.1 of the first set defines an angle of inclination ⁇ comprised between 45 and 180° with respect to a normal N to an opening plane defined by said air inlet opening 23.
  • the angle of inclination a is comprised between 60 and 120°, advantageously between 70 and 110°, and for example between 80 and 100°.
  • the air inlet openings 23 of the cyclone separators 18.1 of the first set are oriented substantially tangentially with respect to the central longitudinal axis A of the second separation stage.
  • Such a configuration of the air inlet openings 23 of the cyclone separators 18.1 of the first set makes it possible to further improve the distribution of the air flow between the various cyclone separators 18 of the second separation stage 12.
  • the separation device cyclone separator 4 further comprises a one-piece separation element 29 which forms the filtration grid 13 and the tubular bodies 19 of the cyclone separators 18, and which is removably fixed to a bottom wall 31 of the waste collection container 7.
  • the one-piece separation element 29 further comprises a cylindrical bottom wall 32 which is fixed in a removable manner to the bottom wall 31 of the waste collection container 7 and which comprises an inner surface partially delimiting the second collection compartment waste 28 and an outer surface partially delimiting the first waste collection compartment 17.
  • the cyclonic separation device 4 further comprises a closure cover 33 fixed, preferably in a removable manner, to an upper peripheral edge 34 of the waste collection container 7.
  • the closure cover 33 more particularly comprises a covering wall 35 which partially covers the cyclone separators 18 and which extends transversely, and for example substantially perpendicularly, to the central longitudinal axis A of the second separation stage 12.
  • the covering wall 35 of the closure cover 33 comprises orifices passage 36 through each of which extends the second end portion 25.2 of a central discharge tube 25 respective.
  • the air discharge opening 9 is provided on the closure cover 33, and the closure cover 33 is also fixed, preferably in a removable manner, on an upper peripheral edge 37 of the filtration grid 13.
  • the cyclonic separation device 4 further comprises a filtration element 38 configured to filter the air discharged by the second separation stage 12.
  • the filtration element 38 is housed at least partially in an upper housing 39 delimited by the closure cover 33, and comprises a filtration wall 41 provided with a plurality of filtration orifices 42.
  • the filtration wall 41 extends transversely, and preferably substantially perpendicularly, to the central longitudinal axis A of the second separation stage 12.
  • each central delivery tube 25 opens into an internal chamber 46 delimited by the closure cover 33 and the filtration element 38.
  • the first separation stage 11 comprises several deflection ribs 43 extending into the primary separation chamber 14 and configured to reduce the speed of the air flow flowing in the separation chamber. primary separation 14.
  • each deflection rib 43 is provided on the one-piece separation element 29 and extends radially in the direction of the side wall 15 of the waste collection container 7.
  • the cyclonic separation device 4 may further comprise air flow straightening elements 44 provided on the first end portion 25.1 of each central delivery tube 25.
  • the air flow straightening elements 44 provided on each central discharge tube 25 are more particularly configured to obstruct the vortex movement of the air circulating in the respective secondary separation chamber 21 and to make it laminar.
  • each airflow straightening element 44 may be formed by a straightening fin or rib extending, for example, substantially radially with respect to the longitudinal axis of the respective central discharge tube 25 .
  • the air flow straightening elements 44 provided on each central discharge tube 25 are advantageously regularly distributed around the longitudinal axis of the respective central discharge tube 25 .
  • the cyclonic separation device 4 further comprises a gripping handle 45 facilitating its handling by a user.
  • the fan motor provided in the frame 2 When the fan motor provided in the frame 2 is electrically powered, it establishes a vacuum in the cyclonic separation device 4 so that air and waste are sucked in by the suction head.
  • the air charged with waste then enters the primary separation chamber 14 via the air inlet opening 8 which opens tangentially into the latter.
  • the air is thus rotated and the waste is centrifuged outwards and the majority of this waste is collected by the first waste collection compartment 17 where the air speeds are lower.
  • the presence of the deflection ribs 43 promotes the separation of the waste from the air flow circulating in the primary separation chamber 14.
  • the air flow then divides to supply each cyclone separator 18.
  • the air inlet openings 23 of the various cyclone separators 18.1, 18.2 of the first set and of the second set are oriented differently in order to standardize the supply of the cyclone separators so that each of them is supplied with substantially the same portion of flow.
  • the air laden with fine dust then passes through the cyclone separators 18 and the separated dust leaves the latter via the waste outlet openings 26 and is collected by the second waste collection compartment 28.
  • each cyclone separator 18 The substantially purified air circulating from vortex manner through each cyclone separator 18 then moves towards the first end portion 25.1 of the respective central discharge tube 25 which has airflow straightening elements 44 in order to break the rotation of the air so that this the latter then flows with a minimum of turbulence and speed in said central discharge tube 25, in order to reduce the generation of noise.
  • the air then leaves the central discharge tubes 25 and passes through the filtration element 38 which will retain the very fine dust which will not have been separated by the first and second separation stages 11, 12.
  • the user When the first and second waste collection compartments 17, 28 are partially filled, the user removes the cyclonic separation device 4 from the frame 2, removes the closure cover 33 and separates the one-piece separation element 29 from the bottom wall 31 of the waste collection container 7, then pours the waste contained in the first and second waste collection compartments 17, 28 for example into a trash can, and finally reassembles the different parts to each other.
  • the filtration element 38 is also removable in order to be able to empty the internal chamber 46.

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

Description

Domaine techniqueTechnical area

La présente invention concerne un dispositif de séparation cyclonique pour aspirateur domestique, et un aspirateur domestique comprenant un tel dispositif de séparation cyclonique.The present invention relates to a cyclonic separation device for a domestic vacuum cleaner, and a domestic vacuum cleaner comprising such a cyclonic separation device.

Etat de la techniqueState of the art

Un dispositif de séparation cyclonique comprenant de façon connue :

  • un récipient de collecte de déchets comprenant une ouverture d'admission d'air et une ouverture de refoulement d'air,
  • un premier étage de séparation disposé dans le récipient de collecte de déchets et configuré pour séparer des déchets de l'air pénétrant dans le récipient de collecte de déchets par l'ouverture d'admission d'air, et
  • un deuxième étage de séparation disposé dans le récipient de collecte de déchets et configuré pour séparer des déchets de l'air refoulé par le premier étage de séparation, le deuxième étage de séparation comprenant une pluralité de séparateurs cycloniques disposés en parallèle les uns par rapport aux autres, chaque séparateur cyclonique comprenant un corps tubulaire qui délimite une chambre de séparation secondaire et un conduit d'admission d'air comprenant une ouverture d'entrée d'air reliée fluidiquement au premier étage de séparation et une ouverture de sortie d'air débouchant dans la chambre de séparation secondaire respective.
A cyclonic separation device comprising in known manner:
  • a waste collection container comprising an air intake opening and an air discharge opening,
  • a first separation stage disposed in the waste collection receptacle and configured to separate waste from air entering the waste collection receptacle through the air inlet opening, and
  • a second separation stage disposed in the waste collection vessel and configured to separate waste from the air discharged by the first separation stage, the second separation stage comprising a plurality of cyclone separators arranged in parallel with each other others, each cyclonic separator comprising a tubular body which delimits a secondary separation chamber and an air intake duct comprising an air inlet opening fluidically connected to the first stage of separation and an air outlet opening leading in the respective secondary separation chamber.

Les ouvertures d'entrée d'air des différents séparateurs cycloniques sont généralement orientées vers l'extérieur du deuxième étage de séparation, de telle sorte que le flux d'air pénétrant dans le deuxième étage de séparation puisse aisément pénétrer dans les différents séparateurs cycloniques.The air inlet openings of the various cyclone separators are generally oriented towards the outside of the second stage of separation, so that the flow of air entering the second stage of separation can easily penetrate into the various cyclone separators.

Toutefois, une telle configuration des séparateurs cycloniques induit une mauvaise répartition du flux d'air, qui traverse le deuxième étage de séparation, entre les différents séparateurs cycloniques, et ce du fait que les séparateurs cycloniques disposés à la périphérie du deuxième étage de séparation sont alimentés en priorité. En conséquence, les performances de séparation de déchets d'un tel dispositif de séparation cyclonique s'avèrent insuffisantes. De plus, les performances acoustiques d'un tel dispositif de séparation cyclonique peuvent encore être améliorées.However, such a configuration of the cyclonic separators induces poor distribution of the air flow, which passes through the second stage of separation, between the various cyclonic separators, and this because the cyclonic separators arranged at the periphery of the second stage of separation are fed in priority. Consequently, the waste separation performance of such a cyclonic separation device turns out to be insufficient. In addition, the acoustic performance of such a cyclonic separation device can be further improved.

WO2010097612A1 , US2016150929A1 et EP 3060095A1 divulguent des dispositifs de séparation comprenant un séparateur amont et un ensemble de cyclones aval. WO2010097612A1 , US2016150929A1 and EP 3060095A1 disclose separation devices comprising an upstream separator and a set of downstream cyclones.

Résumé de l'inventionSummary of the invention

La présente invention vise à remédier à tout ou partie de ces inconvénients.The present invention aims to remedy all or part of these drawbacks.

Le problème technique à la base de l'invention consiste notamment à fournir un dispositif de séparation cyclonique de structure fiable et économique, tout en garantissant des performances de séparation de déchets et des performances acoustiques améliorées.The technical problem underlying the invention consists in particular in providing a cyclonic separation device with a reliable and economical structure, while guaranteeing waste separation performance and improved acoustic performance.

A cet effet, la présente invention concerne un dispositif de séparation cyclonique pour aspirateur domestique, comprenant :

  • un récipient de collecte de déchets comprenant une ouverture d'admission d'air et une ouverture de refoulement d'air,
  • un premier étage de séparation disposé dans le récipient de collecte de déchets et configuré pour séparer des déchets de l'air pénétrant dans le récipient de collecte de déchets par l'ouverture d'admission d'air, et
  • un deuxième étage de séparation disposé dans le récipient de collecte de déchets et configuré pour séparer des déchets de l'air refoulé par le premier étage de séparation, le deuxième étage de séparation comprenant une pluralité de séparateurs cycloniques avantageusement disposés en parallèle les uns par rapport aux autres, chaque séparateur cyclonique comprenant un corps tubulaire qui délimite une chambre de séparation secondaire et un conduit d'admission d'air comprenant une ouverture d'entrée d'air et une ouverture de sortie d'air débouchant dans la chambre de séparation secondaire respective,
caractérisé en ce que la pluralité de séparateurs cycloniques comporte un premier ensemble de séparateurs cycloniques qui sont disposés dans une région centrale du deuxième étage de séparation, et un deuxième ensemble de séparateurs cycloniques qui sont répartis, et de préférence régulièrement répartis, autour d'un axe longitudinal central du deuxième étage de séparation et qui sont disposés autour des séparateurs cycloniques du premier ensemble, les ouvertures d'entrée d'air des séparateurs cycloniques du deuxième ensemble étant orientées vers la région centrale du deuxième étage de séparation.To this end, the present invention relates to a cyclonic separation device for a domestic vacuum cleaner, comprising:
  • a waste collection container comprising an air intake opening and an air discharge opening,
  • a first separation stage disposed in the waste collection receptacle and configured to separate waste from air entering the waste collection receptacle through the air inlet opening, and
  • a second separation stage disposed in the waste collection container and configured to separate waste from the air discharged by the first separation stage, the second separation stage comprising a plurality of cyclone separators advantageously arranged in parallel with each other to the others, each cyclone separator comprising a tubular body which delimits a secondary separation chamber and an air intake duct comprising an air inlet opening and an air outlet opening opening into the respective secondary separation chamber,
characterized in that the plurality of cyclone separators comprises a first set of cyclone separators which are arranged in a central region of the second separation stage, and a second set of cyclone separators which are distributed, and preferably evenly distributed, around a central longitudinal axis of the second separation stage and which are arranged around the cyclone separators of the first set, the air inlet openings of the cyclone separators of the second set being oriented towards the central region of the second separation stage.

Par ouverture d'entrée d'air orientée vers la région centrale, on entend que, vue dans un plan de référence perpendiculaire à l'axe longitudinal central du deuxième étage de séparation, la normale à un plan d'ouverture définit par l'ouverture d'entrée d'air est orientée vers l'intérieur du cercle de centre passant par le centre de l'ouverture d'entrée d'air.By air inlet opening oriented towards the central region, it is meant that, seen in a reference plane perpendicular to the central longitudinal axis of the second separation stage, the normal to an opening plane defined by the opening air inlet faces inside the center circle passing through the center of the air inlet opening.

Une telle orientation des ouvertures d'entrée d'air des séparateurs cycloniques du deuxième ensemble favorise l'alimentation en air des séparateurs cycloniques du premier ensemble, et donc une meilleure répartition du flux d'air entre les différents séparateurs cycloniques du deuxième étage de séparation. De ce fait, le dispositif de séparation cyclonique selon la présente invention présente des performances de séparation améliorées par rapport aux dispositifs de séparation cyclonique de l'art antérieur.Such an orientation of the air inlet openings of the cyclone separators of the second set promotes the air supply to the cyclone separators of the first set, and therefore a better distribution of the air flow between the various cyclone separators of the second separation stage . Therefore, the cyclonic separation device according to the present invention has improved separation performance compared to the cyclonic separation devices of the prior art.

Le dispositif de séparation cyclonique peut en outre présenter une ou plusieurs des caractéristiques suivantes, prises seules ou en combinaison.The cyclonic separation device may also have one or more of the following characteristics, taken alone or in combination.

Selon un mode de réalisation de l'invention, les ouvertures d'entrée d'air des séparateurs cycloniques du deuxième ensemble sont orientées de telle sorte que, vues dans un plan de référence perpendiculaire à l'axe longitudinal central du deuxième étage de séparation et pour chaque séparateur cyclonique du deuxième ensemble, une droite passant par l'axe longitudinal central du deuxième étage de séparation et le centre de l'ouverture d'entrée d'air d'un séparateur cyclonique du deuxième ensemble définit un angle d'inclinaison compris entre -45 et 45° par rapport à une normale à un plan d'ouverture défini par ladite ouverture d'entrée d'air. Une telle configuration des ouvertures d'entrée d'air des séparateurs cycloniques du deuxième ensemble permet de favoriser encore davantage l'alimentation en air des séparateurs cycloniques du premier ensemble pour obtenir une meilleure répartition du flux d'air entre les différents séparateurs cycloniques du deuxième étage de séparation.According to one embodiment of the invention, the air inlet openings of the cyclone separators of the second set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis of the second separation stage and for each cyclone separator of the second set, a straight line passing through the central longitudinal axis of the second separation stage and the center of the air inlet opening of a cyclone separator of the second set defines an angle of inclination comprised between -45 and 45° with respect to a normal to an opening plane defined by said air inlet opening. Such a configuration of the air inlet openings of the cyclone separators of the second set makes it possible to further promote the air supply to the cyclone separators of the first set to obtain a better distribution of the air flow between the various cyclone separators of the second separation stage.

Selon un mode de réalisation de l'invention, les séparateurs cycloniques du deuxième ensemble sont disposés dans une région périphérique du deuxième étage de séparation.According to one embodiment of the invention, the cyclone separators of the second set are arranged in a peripheral region of the second separation stage.

Selon un mode de réalisation de l'invention, le premier ensemble de séparateurs cycloniques comporte des séparateurs cycloniques qui sont répartis, et de préférence régulièrement répartis, autour de l'axe longitudinal central du deuxième étage de séparation et qui sont équidistants par rapport à l'axe longitudinal central du deuxième étage de séparation, et un séparateur cyclonique qui s'étend sensiblement selon l'axe longitudinal central du deuxième étage de séparation.According to one embodiment of the invention, the first set of cyclonic separators comprises cyclonic separators which are distributed, and preferably evenly distributed, around the central longitudinal axis of the second separation stage and which are equidistant with respect to the central longitudinal axis of the second separation stage, and a cyclonic separator which extends substantially along the central longitudinal axis of the second separation stage.

Selon un mode de réalisation de l'invention, les ouvertures d'entrée d'air des séparateurs cycloniques du deuxième ensemble sont orientées sensiblement vers l'axe longitudinal central du deuxième étage de séparation.According to one embodiment of the invention, the air inlet openings of the cyclone separators of the second set are oriented substantially towards the central longitudinal axis of the second separation stage.

Selon un mode de réalisation de l'invention, les ouvertures d'entrée d'air des séparateurs cycloniques du premier ensemble sont orientées de telle sorte que, vues dans un plan de référence perpendiculaire à l'axe longitudinal central du deuxième étage de séparation et pour chaque séparateur cyclonique du premier ensemble, une droite passant par l'axe longitudinal central du deuxième étage de séparation et le centre de l'ouverture d'entrée d'air d'un séparateur cyclonique du premier ensemble définit un angle d'inclinaison compris entre 45 et 180° par rapport à une normale à un plan d'ouverture défini par ladite ouverture d'entrée d'air. Une telle configuration des ouvertures d'entrée d'air des séparateurs cycloniques du premier ensemble permet d'améliorer encore la répartition du flux d'air entre les différents séparateurs cycloniques du deuxième étage de séparation.According to one embodiment of the invention, the air inlet openings of the cyclone separators of the first set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis of the second separation stage and for each cyclone separator of the first set, a straight line passing through the central longitudinal axis of the second separation stage and the center of the air inlet opening of a cyclone separator of the first set defines an angle of inclination comprised between 45 and 180° relative to a normal to an opening plane defined by said air inlet opening. Such a configuration of the air inlet openings of the separators cyclones of the first set makes it possible to further improve the distribution of the air flow between the various cyclone separators of the second stage of separation.

Selon un mode de réalisation de l'invention, l'angle d'inclinaison est compris entre 60 et 120°, avantageusement entre 70 et 110°, et par exemple entre 80 et 100°.According to one embodiment of the invention, the angle of inclination is between 60 and 120°, advantageously between 70 and 110°, and for example between 80 and 100°.

Selon un mode de réalisation de l'invention, les ouvertures d'entrée d'air des séparateurs cycloniques du premier ensemble sont orientées sensiblement tangentiellement par rapport à l'axe longitudinal central du deuxième étage de séparation.According to one embodiment of the invention, the air inlet openings of the cyclone separators of the first set are oriented substantially tangentially with respect to the central longitudinal axis of the second separation stage.

Selon un mode de réalisation de l'invention, les séparateurs cycloniques du deuxième ensemble sont équidistants par rapport à l'axe longitudinal central du deuxième étage de séparation.According to one embodiment of the invention, the cyclone separators of the second set are equidistant from the central longitudinal axis of the second separation stage.

Selon un mode de réalisation de l'invention, le premier étage de séparation comporte un axe longitudinal central qui coïncide sensiblement avec l'axe longitudinal central du deuxième étage de séparation.According to one embodiment of the invention, the first separation stage comprises a central longitudinal axis which substantially coincides with the central longitudinal axis of the second separation stage.

Selon un mode de réalisation de l'invention, chaque séparateur cyclonique de la pluralité de séparateurs cycloniques comporte un axe longitudinal, l'axe longitudinal de chaque séparateur du deuxième ensemble étant incliné vers l'axe longitudinal central du deuxième étage de séparation.According to one embodiment of the invention, each cyclone separator of the plurality of cyclone separators comprises a longitudinal axis, the longitudinal axis of each separator of the second set being inclined towards the central longitudinal axis of the second separation stage.

Selon un mode de réalisation de l'invention, l'ouverture de sortie d'air de chaque séparateur cyclonique de la pluralité de séparateurs cycloniques débouche tangentiellement dans la chambre de séparation secondaire respective.According to one embodiment of the invention, the air outlet opening of each cyclone separator of the plurality of cyclone separators opens tangentially into the respective secondary separation chamber.

Selon un mode de réalisation de l'invention, le conduit d'admission d'air de chaque séparateur cyclonique de la pluralité de séparateurs cycloniques s'étend hélicoïdalement.According to one embodiment of the invention, the air intake duct of each cyclone separator of the plurality of cyclone separators extends helically.

Selon un mode de réalisation de l'invention, chaque séparateur cyclonique de la pluralité de séparateurs cycloniques comprend un tube de refoulement central comprenant une première portion d'extrémité débouchant dans la chambre de séparation secondaire respective et une deuxième portion d'extrémité opposée à la première portion d'extrémité respective.According to one embodiment of the invention, each cyclone separator of the plurality of cyclone separators comprises a central discharge tube comprising a first end portion opening into the respective secondary partition and a second end portion opposite the respective first end portion.

Selon un mode de réalisation de l'invention, le récipient de collecte de déchets comporte un bord périphérique supérieur, et le dispositif de séparation cyclonique comporte en outre un couvercle de fermeture fixé, de préférence de manière amovible, sur le bord périphérique supérieur du récipient de collecte de déchets.According to one embodiment of the invention, the waste collection container comprises an upper peripheral edge, and the cyclonic separation device further comprises a closing lid fixed, preferably in a removable manner, to the upper peripheral edge of the container waste collection.

Selon un mode de réalisation de l'invention, l'ouverture de refoulement d'air est prévue sur le couvercle de fermeture.According to one embodiment of the invention, the air discharge opening is provided on the closure cover.

Selon un mode de réalisation de l'invention, la deuxième portion d'extrémité de chaque tube de refoulement central s'étend à travers un orifice de passage respectif prévu sur le couvercle de fermeture.According to one embodiment of the invention, the second end portion of each central delivery tube extends through a respective passage orifice provided on the closure cover.

Selon un mode de réalisation de l'invention, la deuxième portion d'extrémité de chaque tube de refoulement central débouche dans une chambre interne délimitée au moins partiellement par le couvercle de fermeture.According to one embodiment of the invention, the second end portion of each central delivery tube opens into an internal chamber delimited at least partially by the closure cover.

Selon un mode de réalisation de l'invention, le couvercle de fermeture comporte une paroi de recouvrement qui recouvre partiellement les séparateurs cycloniques de la pluralité de séparateurs cycloniques et qui s'étend transversalement, et par exemple sensiblement perpendiculairement, à l'axe longitudinal central du deuxième étage de séparation, les différents orifices de passage étant ménagés sur la paroi de recouvrement du couvercle de fermeture.According to one embodiment of the invention, the closure cover comprises a covering wall which partially covers the cyclone separators of the plurality of cyclone separators and which extends transversely, and for example substantially perpendicularly, to the central longitudinal axis of the second stage of separation, the various passage orifices being provided on the covering wall of the closure cover.

Selon un mode de réalisation de l'invention, le premier étage de séparation comporte une grille de filtration et une chambre de séparation primaire délimitée au moins partiellement par une paroi latérale du récipient de collecte de déchets et par la grille de filtration.According to one embodiment of the invention, the first separation stage comprises a filtration grid and a primary separation chamber delimited at least partially by a side wall of the waste collection container and by the filtration grid.

Selon un mode de réalisation de l'invention, la chambre de séparation primaire est une chambre de séparation cyclonique primaire.According to one embodiment of the invention, the primary separation chamber is a primary cyclonic separation chamber.

Selon un mode de réalisation de l'invention, les corps tubulaires des séparateurs cycloniques de la pluralité de séparateurs cycloniques sont situés sous la grille de filtration.According to one embodiment of the invention, the tubular bodies of the cyclone separators of the plurality of cyclone separators are located under the grid of filtration.

Selon un mode de réalisation de l'invention, les ouvertures d'entrée d'air des séparateurs cycloniques de la pluralité de séparateurs cycloniques sont situées dans un volume interne délimité latéralement par la grille de filtration.According to one embodiment of the invention, the air inlet openings of the cyclone separators of the plurality of cyclone separators are located in an internal volume delimited laterally by the filtration grid.

Selon un mode de réalisation de l'invention, la grille de filtration est de forme sensiblement cylindrique.According to one embodiment of the invention, the filtration grid is of substantially cylindrical shape.

Selon un mode de réalisation de l'invention, la grille de filtration comporte une pluralité d'orifices d'évacuation destinés à l'évacuation d'un flux d'air en direction du deuxième étage de séparation.According to one embodiment of the invention, the filtration grid comprises a plurality of evacuation orifices intended for the evacuation of an air flow in the direction of the second stage of separation.

Selon un mode de réalisation de l'invention, la grille de filtration sépare au moins partiellement le premier étage de séparation et le deuxième étage de séparation.According to one embodiment of the invention, the filtration grid at least partially separates the first stage of separation and the second stage of separation.

Selon un mode de réalisation de l'invention, la grille de filtration est située dans une partie supérieure du récipient de collecte de déchets.According to one embodiment of the invention, the filtration grid is located in an upper part of the waste collection container.

Selon un mode de réalisation de l'invention, le premier étage de séparation comporte au moins une nervure de déviation s'étendant dans la chambre de séparation primaire et configurée pour réduire la vitesse du flux d'air s'écoulant dans la chambre de séparation primaire.According to one embodiment of the invention, the first separation stage comprises at least one deflection rib extending into the primary separation chamber and configured to reduce the velocity of the air flow flowing into the separation chamber primary.

Selon un mode de réalisation de l'invention, le premier étage de séparation est situé autour du deuxième étage de séparation. Une telle disposition du deuxième étage de séparation, dont les séparateurs cycloniques sont générateurs de bruit, permet de limiter le bruit généré par le dispositif de séparation cyclonique.According to one embodiment of the invention, the first separation stage is located around the second separation stage. Such an arrangement of the second separation stage, whose cyclonic separators generate noise, makes it possible to limit the noise generated by the cyclonic separation device.

Selon un mode de réalisation de l'invention, le dispositif de séparation cyclonique comporte en outre :

  • un premier compartiment de collecte de déchets configuré pour collecter les déchets séparés par le premier étage de séparation, et
  • un deuxième compartiment de collecte de déchets séparé du premier compartiment de collecte de déchets et configuré pour collecter les déchets séparés par le deuxième étage de séparation.
According to one embodiment of the invention, the cyclonic separation device further comprises:
  • a first waste collection compartment configured to collect waste separated by the first separation stage, and
  • a second waste collection compartment separated from the first waste collection compartment and configured to collect the waste separated by the second separation stage.

Selon un mode de réalisation de l'invention, le premier compartiment de collecte de déchets est situé en dessous de la chambre de séparation primaire.According to one embodiment of the invention, the first waste collection compartment is located below the primary separation chamber.

Selon un mode de réalisation de l'invention, le deuxième compartiment de collecte de déchets est situé en dessous des corps tubulaires des séparateurs cycloniques.According to one embodiment of the invention, the second waste collection compartment is located below the tubular bodies of the cyclone separators.

Selon un mode de réalisation de l'invention, le corps tubulaire de chaque séparateur cyclonique de la pluralité de séparateurs cycloniques comporte une partie supérieure ayant une forme générale cylindrique, et une partie inférieure qui est tronconique et qui converge vers le bas.According to one embodiment of the invention, the tubular body of each cyclone separator of the plurality of cyclone separators comprises an upper part having a generally cylindrical shape, and a lower part which is frustoconical and which converges downwards.

Selon un mode de réalisation de l'invention, le dispositif de séparation cyclonique comporte en outre un élément de filtration configuré pour filtrer l'air refoulé par le deuxième étage de séparation. La présence d'un tel élément de filtration permet notamment de retenir les poussières très fines qui n'auraient pas été séparées par les premier et deuxième étages de séparation, et donc d'améliorer les performances de séparation du dispositif de séparation cyclonique. En outre, un tel élément de filtration permet d'absorber en partie le bruit généré par l'écoulement du flux d'air dans les différents tubes de refoulement centraux, et ainsi de rendre le dispositif de séparation cyclonique plus silencieux.According to one embodiment of the invention, the cyclonic separation device further comprises a filtration element configured to filter the air discharged by the second separation stage. The presence of such a filtration element makes it possible in particular to retain the very fine dust which would not have been separated by the first and second separation stages, and therefore to improve the separation performance of the cyclonic separation device. In addition, such a filtration element makes it possible to partially absorb the noise generated by the flow of the air flow in the various central delivery tubes, and thus to make the cyclonic separation device quieter.

Selon un mode de réalisation de l'invention, l'élément de filtration comporte une paroi de filtration pourvue d'une pluralité d'orifices de filtration. Avantageusement, la paroi de filtration s'étend transversalement, et de préférence sensiblement perpendiculairement, à l'axe longitudinal central du deuxième étage de séparation. L'élément de filtration peut par exemple être un micro-filtre.According to one embodiment of the invention, the filtration element comprises a filtration wall provided with a plurality of filtration orifices. Advantageously, the filtration wall extends transversely, and preferably substantially perpendicularly, to the central longitudinal axis of the second separation stage. The filtration element can for example be a micro-filter.

Selon un mode de réalisation de l'invention, l'élément de filtration présente une forme générale de disque. L'élément de filtration peut par exemple être un filtre en mousse ou un filtre HEPA.According to one embodiment of the invention, the filtration element has the general shape of a disc. The filter element can for example be a foam filter or a HEPA filter.

Selon un mode de réalisation de l'invention, la chambre interne est délimitée par le couvercle de fermeture et l'élément de filtration.According to one embodiment of the invention, the internal chamber is delimited by the closure cover and the filtration element.

Selon un mode de réalisation de l'invention, le couvercle de fermeture comporte un logement supérieur dans lequel est logé au moins partiellement l'élément de filtration.According to one embodiment of the invention, the closure cover comprises an upper housing in which the filtration element is at least partially housed.

Selon un mode de réalisation de l'invention, le corps tubulaire de chaque séparateur cyclonique comporte une ouverture de sortie de déchets reliée au deuxième compartiment de collecte de déchets. Avantageusement, chaque ouverture de sortie de déchets est située en partie basse du corps tubulaire respectif.According to one embodiment of the invention, the tubular body of each cyclone separator comprises a waste outlet opening connected to the second waste collection compartment. Advantageously, each waste outlet opening is located in the lower part of the respective tubular body.

Selon un mode de réalisation de l'invention, l'ouverture d'admission d'air débouche tangentiellement dans le récipient de collecte de déchets, et plus particulièrement dans la chambre de séparation primaire. Avantageusement, l'ouverture d'admission d'air débouche dans une partie supérieure du récipient de collecte de déchets, et plus particulièrement de la chambre de séparation primaire.According to one embodiment of the invention, the air intake opening opens tangentially into the waste collection container, and more particularly into the primary separation chamber. Advantageously, the air intake opening opens into an upper part of the waste collection container, and more particularly of the primary separation chamber.

Selon un mode de réalisation de l'invention, le dispositif de séparation cyclonique comporte un élément de séparation monobloc formant la grille de filtration et les corps tubulaires des séparateurs cycloniques.According to one embodiment of the invention, the cyclonic separation device comprises a one-piece separation element forming the filtration grid and the tubular bodies of the cyclonic separators.

Selon un mode de réalisation de l'invention, l'élément de séparation monobloc est fixé de manière amovible à une paroi de fond du récipient de collecte de déchets.According to one embodiment of the invention, the one-piece separation element is removably fixed to a bottom wall of the waste collection container.

Selon un mode de réalisation de l'invention, l'élément de séparation monobloc comporte en outre une paroi inférieure cylindrique fixée de manière amovible à la paroi de fond du récipient de collecte de déchets, la paroi inférieure cylindrique comprenant une surface intérieure délimitant au moins partiellement le deuxième compartiment de collecte de déchets et une surface extérieure délimitant au moins partiellement le premier compartiment de collecte de déchets.According to one embodiment of the invention, the one-piece separation element further comprises a cylindrical bottom wall removably fixed to the bottom wall of the waste collection container, the cylindrical bottom wall comprising an inner surface delimiting at least partially the second waste collection compartment and an outer surface at least partially delimiting the first waste collection compartment.

Selon un mode de réalisation de l'invention, l'au moins une nervure de déviation est prévue sur l'élément de séparation monobloc.According to one embodiment of the invention, the at least one deflection rib is provided on the one-piece separation element.

Selon un mode de réalisation de l'invention, le couvercle de fermeture est fixé, de préférence de manière amovible, sur un bord périphérique supérieur de la grille de filtration.According to one embodiment of the invention, the closure cover is fixed, preferably in a removable manner, to an upper peripheral edge of the filtration grid.

La présente invention concerne en outre un aspirateur domestique comprenant un dispositif de séparation cyclonique selon la présente invention.The present invention further relates to a household vacuum cleaner comprising a cyclonic separation device according to the present invention.

Selon un mode de réalisation de l'invention, l'aspirateur domestique est un aspirateur balai ou un aspirateur traineau.According to one embodiment of the invention, the domestic vacuum cleaner is a broom vacuum cleaner or a sled vacuum cleaner.

Brève description des figuresBrief description of figures

L'invention sera bien comprise à l'aide de la description qui suit en référence aux dessins schématiques annexés représentant, à titre d'exemple non limitatif, une forme d'exécution de ce dispositif de séparation cyclonique.

  • Figure 1 est une vue partielle en perspective d'un aspirateur domestique selon la présente invention.
  • Figure 2 est une vue partielle en perspective de l'aspirateur domestique de la figure 1 montrant une étape de démontage d'un dispositif de séparation cyclonique équipant de dernier.
  • Figure 3 est une vue partielle éclatée, en perspective, du dispositif de séparation cyclonique de la figure 2.
  • Figure 4 est une vue partielle en perspective de dessus du dispositif de séparation cyclonique de la figure 2.
  • Figure 5 est une vue partielle de dessus du dispositif de séparation cyclonique de la figure 2.
  • Figure 6 est une vue en coupe longitudinale du dispositif de séparation cyclonique de la figure 2.
  • Figure 7 est une vue partielle éclatée, en perspective, du dispositif de séparation cyclonique de la figure 2.
The invention will be better understood with the aid of the following description with reference to the appended diagrammatic drawings representing, by way of non-limiting example, one embodiment of this cyclonic separation device.
  • Figure 1 is a partial perspective view of a household vacuum cleaner according to the present invention.
  • Figure 2 is a partial perspective view of the household vacuum cleaner from the figure 1 showing a dismantling step of a cyclonic separation device fitted to the latter.
  • Figure 3 is a partial exploded view, in perspective, of the cyclonic separation device of the figure 2 .
  • Figure 4 is a partial perspective view from above of the cyclonic separation device of the figure 2 .
  • Figure 5 is a partial top view of the cyclonic separation device of the figure 2 .
  • Figure 6 is a longitudinal sectional view of the cyclonic separation device of the figure 2 .
  • Picture 7 is a partial exploded view, in perspective, of the cyclonic separation device of the figure 2 .

Description détailléedetailed description

Les figures 1 et 2 représentent un aspirateur domestique 1, et plus particulièrement un aspirateur traineau, comprenant un bâti 2 supporté par des roues 3 facilitant les déplacements de l'aspirateur domestique 1 lors de son utilisation. De façon connue, le bâti 2 comprend un bloc moto-ventilateur destiné à générer une dépression, un enrouleur de câble électrique et une électronique de commande ainsi que des organes de commande manuelle permettant de piloter le fonctionnement l'aspirateur domestique 1. Ces différents éléments, qui ne constituent pas l'objet de l'invention en elle-même, n'ont pas été représentés sur les figures afin d'alléger ces dernières.The figures 1 and 2 represent a domestic vacuum cleaner 1, and more particularly a sled vacuum cleaner, comprising a frame 2 supported by wheels 3 facilitating the movements of the domestic vacuum cleaner 1 during its use. In a known manner, the frame 2 comprises a motorized fan unit intended to generate a vacuum, an electric cable reel and control electronics as well as manual control devices making it possible to control the operation of the domestic vacuum cleaner 1. These various elements, which do not constitute the object of the invention in itself -even, have not been shown in the figures in order to lighten them.

L'aspirateur domestique 1 comprend en outre un dispositif de séparation cyclonique 4 monté de manière amovible sur le bâti 2, et un conduit de liaison 5 assurant une liaison aéraulique entre le moto-ventilateur et le dispositif de séparation cyclonique 4 de sorte que le moto-ventilateur est apte à établir une dépression dans ce dernier pendant le fonctionnement du moto-ventilateur.The domestic vacuum cleaner 1 further comprises a cyclonic separation device 4 removably mounted on the frame 2, and a connecting duct 5 providing an air connection between the motor-driven fan and the cyclonic separation device 4 so that the motor -ventilateur is able to establish a depression in the latter during the operation of the fan motor.

L'aspirateur domestique 1 comprend en outre une bouche de raccordement 6 reliée fluidiquement au conduit de liaison 5 et destinée à être raccordée à une chaîne d'accessoires d'aspiration, non représentée sur les figures, comprenant généralement une tête d'aspiration adaptée à l'extrémité d'un tube télescopique rigide raccordé à la bouche de raccordement 6 par un tube flexible de sorte que la tête d'aspiration se trouve en liaison aéraulique avec le moto-ventilateur via le dispositif de séparation cyclonique 4 et le conduit de liaison 5.The domestic vacuum cleaner 1 further comprises a connection mouth 6 fluidly connected to the connecting conduit 5 and intended to be connected to a chain of suction accessories, not shown in the figures, generally comprising a suction head adapted to the end of a rigid telescopic tube connected to the connection mouth 6 by a flexible tube so that the suction head is in aeraulic connection with the motorized fan via the cyclonic separation device 4 and the connecting duct 5.

Comme montré plus particulièrement sur les figures 3 et 6, le dispositif de séparation cyclonique 4 comprend un récipient de collecte de déchets 7 comprenant une ouverture d'admission d'air 8 et une ouverture de refoulement d'air 9.As shown more particularly on the figure 3 and 6 , the cyclonic separation device 4 comprises a waste collection container 7 comprising an air intake opening 8 and an air discharge opening 9.

Le dispositif de séparation cyclonique 4 comprend en outre un premier étage de séparation 11 disposé dans le récipient de collecte de déchets 7 et configuré pour séparer des déchets de l'air pénétrant dans le récipient de collecte de déchets 7 par l'ouverture d'admission d'air 8, et un deuxième étage de séparation 12 disposé également dans le récipient de collecte de déchets 7 et configuré pour séparer des déchets de l'air refoulé par le premier étage de séparation 11. De façon avantageuse, le deuxième étage de séparation 12 comporte un axe longitudinal central A qui coïncide sensiblement avec un axe longitudinal central du premier étage de séparation 11, et le premier étage de séparation 11 est situé autour du deuxième étage de séparation 12.The cyclonic separation device 4 further comprises a first separation stage 11 disposed in the waste collection container 7 and configured to separate waste from the air entering the waste collection container 7 through the inlet opening. air 8, and a second separation stage 12 also disposed in the waste collection container 7 and configured to separate waste from the air discharged by the first separation stage 11. Advantageously, the second separation stage 12 has a central longitudinal axis A which substantially coincides with a central longitudinal axis of the first stage of separation 11, and the first stage of separation 11 is located around the second separation stage 12.

Le premier étage de séparation 11 comprend plus particulièrement une grille de filtration 13, qui est globalement cylindrique et qui est disposée dans une partie supérieure du récipient de collecte de déchets 7, et une chambre de séparation primaire 14 délimitée partiellement par une paroi latérale 15 du récipient de collecte de déchets 7 et par la grille de filtration 13. Avantageusement, la chambre de séparation primaire 14 est annulaire et forme une chambre de séparation cyclonique, et l'ouverture d'admission d'air 8 débouche tangentiellement dans une partie supérieure de la chambre de séparation primaire 14.The first separation stage 11 more particularly comprises a filtration grid 13, which is generally cylindrical and which is arranged in an upper part of the waste collection container 7, and a primary separation chamber 14 partially delimited by a side wall 15 of the waste collection container 7 and by the filtration grid 13. Advantageously, the primary separation chamber 14 is annular and forms a cyclonic separation chamber, and the air intake opening 8 opens tangentially into an upper part of the primary separation chamber 14.

Comme montré plus particulièrement sur la figure 4, la grille de filtration 13 comporte une pluralité d'orifices d'évacuation 16 destinés à l'évacuation d'un flux d'air en direction du deuxième étage de séparation 12, et sépare au moins partiellement le premier étage de séparation 11 et le deuxième étage de séparation 12.As shown more particularly on the figure 4 , the filtration grid 13 comprises a plurality of evacuation orifices 16 intended for the evacuation of an air flow in the direction of the second stage of separation 12, and at least partially separates the first stage of separation 11 and the second separation stage 12.

Le premier étage de séparation 11 comprend en outre un premier compartiment de collecte de déchets 17 situé en dessous de la chambre de séparation primaire 14 et configuré pour collecter les déchets séparés par le premier étage de séparation 11.The first separation stage 11 further comprises a first waste collection compartment 17 located below the primary separation chamber 14 and configured to collect the waste separated by the first separation stage 11.

Comme montré sur les figures 4 et 5, le deuxième étage de séparation 12 comprend une pluralité de séparateurs cycloniques 18 disposés en parallèle les uns par rapport aux autres. Chaque séparateur cyclonique 18 comprend un corps tubulaire 19 qui délimite une chambre de séparation secondaire 21, et un conduit d'admission d'air 22 qui s'étend hélicoïdalement et qui comprend une ouverture d'entrée d'air 23 et une ouverture de sortie d'air 24 débouchant tangentiellement dans la chambre de séparation secondaire 21 respective. Chaque séparateur cyclonique 18 comprend en outre un tube de refoulement central 25 comprenant une première portion d'extrémité 25.1 débouchant dans la chambre de séparation secondaire 21 respective et une deuxième portion d'extrémité 25.2 opposée à la première portion d'extrémité 25.1 respective. Comme montré sur la figure 7, le corps tubulaire 19 et le tube de refoulement central 25 de chaque séparateur cyclonique 18 peuvent être fabriqués indépendamment l'un de l'autre, et ce afin de faciliter la fabrication de chaque séparateur cyclonique 18.As shown on the figures 4 and 5 , the second separation stage 12 comprises a plurality of cyclonic separators 18 arranged in parallel with respect to each other. Each cyclone separator 18 comprises a tubular body 19 which delimits a secondary separation chamber 21, and an air intake duct 22 which extends helically and which comprises an air inlet opening 23 and an outlet opening air 24 opening tangentially into the respective secondary separation chamber 21. Each cyclone separator 18 further comprises a central discharge tube 25 comprising a first end portion 25.1 opening into the respective secondary separation chamber 21 and a second end portion 25.2 opposite the respective first end portion 25.1. As shown on the figure 7 , the tubular body 19 and the central discharge tube 25 of each cyclone separator 18 can be manufactured independently of each other, in order to facilitate the manufacture of each cyclone separator 18.

Le corps tubulaire 19 de chaque séparateur cyclonique 18 comporte plus particulièrement une partie supérieure 19.1 ayant une forme générale cylindrique, et une partie inférieure 19.2 qui est tronconique et qui converge vers le bas. En outre, le corps tubulaire 19 de chaque séparateur cyclonique 18 comporte une ouverture de sortie de déchets 26 située en partie basse du corps tubulaire 19 respectif.The tubular body 19 of each cyclone separator 18 comprises more particularly an upper part 19.1 having a generally cylindrical shape, and a lower part 19.2 which is tapered and which converges downwards. In addition, the tubular body 19 of each cyclone separator 18 comprises a waste outlet opening 26 located in the lower part of the respective tubular body 19.

Selon le mode de réalisation représenté sur les figures, les corps tubulaires 19 des séparateurs cycloniques 18 sont situés sous la grille de filtration 13, tandis que les ouvertures d'entrée d'air 23 des séparateurs cycloniques 18 sont situées dans un volume interne 27 délimité latéralement par la grille de filtration 13.According to the embodiment shown in the figures, the tubular bodies 19 of the cyclone separators 18 are located under the filtration grid 13, while the air inlet openings 23 of the cyclone separators 18 are located in an internal volume 27 delimited laterally through the filtration grid 13.

Le deuxième étage de séparation 12 comprend également un deuxième compartiment de collecte de déchets 28 séparé du premier compartiment de collecte de déchets 17 et configuré pour collecter les déchets séparés par le deuxième étage de séparation 12. Le deuxième compartiment de collecte de déchets 28 est avantageusement situé en dessous des corps tubulaires 19 des séparateurs cycloniques 18, de telle sorte que les déchets évacués par les ouvertures de sortie de déchets 26 puissent tomber par gravité dans le deuxième compartiment de collecte de déchets 28.The second separation stage 12 also includes a second waste collection compartment 28 separated from the first waste collection compartment 17 and configured to collect the waste separated by the second separation stage 12. The second waste collection compartment 28 is advantageously located below the tubular bodies 19 of the cyclone separators 18, so that the waste evacuated by the waste outlet openings 26 can fall by gravity into the second waste collection compartment 28.

Comme montré plus particulièrement sur les figures 4 et 5, la pluralité de séparateurs cycloniques comporte un premier ensemble de séparateurs cycloniques comprenant des séparateurs cycloniques 18.1 qui sont disposés dans une région centrale du deuxième étage de séparation 12, et un deuxième ensemble de séparateurs cycloniques comprenant des séparateurs cycloniques 18.2 qui sont régulièrement répartis autour de l'axe longitudinal central A du deuxième étage de séparation 12 et qui sont disposés autour des séparateurs cycloniques 18.1 du premier ensemble. En particulier, les séparateurs cycloniques 18.2 du deuxième ensemble sont disposés dans une région périphérique du deuxième étage de séparation 12, et sont équidistants par rapport à l'axe longitudinal central A du deuxième étage de séparation 12.As shown more particularly on the figures 4 and 5 , the plurality of cyclone separators comprises a first set of cyclone separators comprising cyclone separators 18.1 which are arranged in a central region of the second separation stage 12, and a second set of cyclone separators comprising cyclone separators 18.2 which are regularly distributed around the central longitudinal axis A of the second separation stage 12 and which are arranged around the cyclone separators 18.1 of the first set. In particular, separators cyclones 18.2 of the second set are arranged in a peripheral region of the second separation stage 12, and are equidistant from the central longitudinal axis A of the second separation stage 12.

De façon avantageuse, les ouvertures d'entrée d'air 23 des séparateurs cycloniques 18.2 du deuxième ensemble sont orientées vers la région centrale du deuxième étage de séparation 12, c'est-à-dire que, vue dans un plan de référence perpendiculaire à l'axe longitudinal central A du deuxième étage de séparation 12, la normale N à un plan d'ouverture défini par l'ouverture d'entrée d'air 23 est orientée vers l'intérieur du cercle de centre A passant par le centre de l'ouverture d'entrée d'air 23.Advantageously, the air inlet openings 23 of the cyclone separators 18.2 of the second set are oriented towards the central region of the second separation stage 12, that is to say that, seen in a reference plane perpendicular to the central longitudinal axis A of the second separation stage 12, the normal N to an opening plane defined by the air inlet opening 23 is oriented towards the inside of the circle with center A passing through the center of the air inlet opening 23.

De manière préférentielle, les ouvertures d'entrée d'air 23 des séparateurs cycloniques 18.2 du deuxième ensemble sont orientées de telle sorte que, vues dans un plan de référence perpendiculaire à l'axe longitudinal central A du deuxième étage de séparation 12 et pour chaque séparateur cyclonique 18.2 du deuxième ensemble, une droite D passant par l'axe longitudinal central A du deuxième étage de séparation 12 et le centre de l'ouverture d'entrée d'air 23 d'un séparateur cyclonique 18.2 du deuxième ensemble définit un angle d'inclinaison β compris entre -90° et 90° par rapport à une normale N à un plan d'ouverture défini par ladite ouverture d'entrée d'air 23. L'angle d'inclinaison β est compris entre -90° et 90°, avantageusement entre -45° et 45°, et par exemple entre -10° et 10°. Selon le mode de réalisation représenté sur les figures, les ouvertures d'entrée d'air 23 des séparateurs cycloniques 18.2 du deuxième ensemble sont orientées sensiblement vers l'axe longitudinal central A du deuxième étage de séparation 12.Preferably, the air inlet openings 23 of the cyclone separators 18.2 of the second set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis A of the second separation stage 12 and for each cyclone separator 18.2 of the second set, a straight line D passing through the central longitudinal axis A of the second separation stage 12 and the center of the air inlet opening 23 of a cyclone separator 18.2 of the second set defines an angle of inclination β between -90° and 90° with respect to a normal N to an opening plane defined by said air inlet opening 23. The angle of inclination β is between -90° and 90°, advantageously between -45° and 45°, and for example between -10° and 10°. According to the embodiment shown in the figures, the air inlet openings 23 of the cyclone separators 18.2 of the second set are oriented substantially towards the central longitudinal axis A of the second separation stage 12.

Une telle orientation des ouvertures d'entrée d'air 23 des séparateurs cycloniques 18.2 du deuxième ensemble favorise l'alimentation en air des séparateurs cycloniques 18.1 du premier ensemble, et donc une meilleure répartition du flux d'air entre les différents séparateurs cycloniques 18 du deuxième étage de séparation 12.Such an orientation of the air inlet openings 23 of the cyclone separators 18.2 of the second set promotes the air supply to the cyclone separators 18.1 of the first set, and therefore a better distribution of the air flow between the various cyclone separators 18 of the second separation stage 12.

Comme montré plus particulièrement sur la figure 6, l'axe longitudinal B de chaque séparateur cyclonique 18.2 du deuxième ensemble est incliné vers l'axe longitudinal central A du deuxième étage de séparation 12 de telle sorte que l'extrémité inférieure du corps tubulaire 19 de chaque séparateur cyclonique 18.2 du deuxième ensemble soit rapprochée de l'axe longitudinal central A. Ces dispositions permettent notamment de rendre plus compact le deuxième étage de séparation 12, et donc d'augmenter le volume du premier compartiment de collecte de déchets 17.As shown more particularly on the figure 6 , the longitudinal axis B of each cyclone separator 18.2 of the second set is inclined towards the central longitudinal axis A of the second separation stage 12 such that the lower end of the tubular body 19 of each cyclone separator 18.2 of the second set is brought closer to the central longitudinal axis A. These arrangements make it possible in particular to make the second separation stage 12 more compact, and therefore to increase the volume of the first waste collection compartment 17.

Selon le mode de réalisation représenté sur les figures, le premier ensemble de séparateurs cycloniques comporte des séparateurs cycloniques 18.1 qui sont régulièrement répartis autour de l'axe longitudinal central A du deuxième étage de séparation 12 et qui sont équidistants par rapport à l'axe longitudinal central A, et un séparateur cyclonique 18.1 qui s'étend sensiblement selon l'axe longitudinal central A.According to the embodiment shown in the figures, the first set of cyclonic separators comprises cyclonic separators 18.1 which are regularly distributed around the central longitudinal axis A of the second separation stage 12 and which are equidistant with respect to the longitudinal axis central A, and a cyclone separator 18.1 which extends substantially along the central longitudinal axis A.

Comme montré sur la figure 5, les ouvertures d'entrée d'air 23 des séparateurs cycloniques 18.1 du premier ensemble sont orientées de telle sorte que, vues dans un plan de référence perpendiculaire à l'axe longitudinal central A du deuxième étage de séparation 12 et pour chaque séparateur cyclonique 18.1 du premier ensemble, une droite D passant par l'axe longitudinal central A du deuxième étage de séparation 12 et le centre de l'ouverture d'entrée d'air 23 d'un séparateur cyclonique 18.1 du premier ensemble définit un angle d'inclinaison α compris entre 45 et 180° par rapport à une normale N à un plan d'ouverture défini par ladite ouverture d'entrée d'air 23. L'angle d'inclinaison a est compris entre 60 et 120°, avantageusement entre 70 et 110°, et par exemple entre 80 et 100°. Selon le mode de réalisation représenté sur les figures, les ouvertures d'entrée d'air 23 des séparateurs cycloniques 18.1 du premier ensemble sont orientées sensiblement tangentiellement par rapport à l'axe longitudinal central A du deuxième étage de séparation. Une telle configuration des ouvertures d'entrée d'air 23 des séparateurs cycloniques 18.1 du premier ensemble permet d'améliorer encore la répartition du flux d'air entre les différents séparateurs cycloniques 18 du deuxième étage de séparation 12.As shown on the figure 5 , the air inlet openings 23 of the cyclone separators 18.1 of the first set are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis A of the second separation stage 12 and for each cyclone separator 18.1 of the first set, a straight line D passing through the central longitudinal axis A of the second separation stage 12 and the center of the air inlet opening 23 of a cyclone separator 18.1 of the first set defines an angle of inclination α comprised between 45 and 180° with respect to a normal N to an opening plane defined by said air inlet opening 23. The angle of inclination a is comprised between 60 and 120°, advantageously between 70 and 110°, and for example between 80 and 100°. According to the embodiment shown in the figures, the air inlet openings 23 of the cyclone separators 18.1 of the first set are oriented substantially tangentially with respect to the central longitudinal axis A of the second separation stage. Such a configuration of the air inlet openings 23 of the cyclone separators 18.1 of the first set makes it possible to further improve the distribution of the air flow between the various cyclone separators 18 of the second separation stage 12.

Selon le mode de réalisation représenté sur les figures, le dispositif de séparation cyclonique 4 comporte en outre un élément de séparation monobloc 29 qui forme la grille de filtration 13 et les corps tubulaires 19 des séparateurs cycloniques 18, et qui est fixé de manière amovible à une paroi de fond 31 du récipient de collecte de déchets 7. De façon avantageuse, l'élément de séparation monobloc 29 comporte en outre une paroi inférieure cylindrique 32 qui est fixée de manière amovible à la paroi de fond 31 du récipient de collecte de déchets 7 et qui comporte une surface intérieure délimitant partiellement le deuxième compartiment de collecte de déchets 28 et une surface extérieure délimitant partiellement le premier compartiment de collecte de déchets 17.According to the embodiment shown in the figures, the separation device cyclone separator 4 further comprises a one-piece separation element 29 which forms the filtration grid 13 and the tubular bodies 19 of the cyclone separators 18, and which is removably fixed to a bottom wall 31 of the waste collection container 7. advantageously, the one-piece separation element 29 further comprises a cylindrical bottom wall 32 which is fixed in a removable manner to the bottom wall 31 of the waste collection container 7 and which comprises an inner surface partially delimiting the second collection compartment waste 28 and an outer surface partially delimiting the first waste collection compartment 17.

Le dispositif de séparation cyclonique 4 comporte en outre un couvercle de fermeture 33 fixé, de préférence de manière amovible, sur un bord périphérique supérieur 34 du récipient de collecte de déchets 7. Le couvercle de fermeture 33 comporte plus particulièrement une paroi de recouvrement 35 qui recouvre partiellement les séparateurs cycloniques 18 et qui s'étend transversalement, et par exemple sensiblement perpendiculairement, à l'axe longitudinal central A du deuxième étage de séparation 12. De façon avantageuse, la paroi de recouvrement 35 du couvercle de fermeture 33 comporte des orifices de passage 36 à travers chacun desquels s'étend la deuxième portion d'extrémité 25.2 d'un tube de refoulement central 25 respectif.The cyclonic separation device 4 further comprises a closure cover 33 fixed, preferably in a removable manner, to an upper peripheral edge 34 of the waste collection container 7. The closure cover 33 more particularly comprises a covering wall 35 which partially covers the cyclone separators 18 and which extends transversely, and for example substantially perpendicularly, to the central longitudinal axis A of the second separation stage 12. Advantageously, the covering wall 35 of the closure cover 33 comprises orifices passage 36 through each of which extends the second end portion 25.2 of a central discharge tube 25 respective.

Selon le mode de réalisation représenté sur les figures, l'ouverture de refoulement d'air 9 est prévue sur le couvercle de fermeture 33, et le couvercle de fermeture 33 est également fixé, de préférence de manière amovible, sur un bord périphérique supérieur 37 de la grille de filtration 13.According to the embodiment shown in the figures, the air discharge opening 9 is provided on the closure cover 33, and the closure cover 33 is also fixed, preferably in a removable manner, on an upper peripheral edge 37 of the filtration grid 13.

Le dispositif de séparation cyclonique 4 comporte de plus un élément de filtration 38 configuré pour filtrer l'air refoulé par le deuxième étage de séparation 12. Selon le mode de réalisation représenté sur les figures, l'élément de filtration 38 est logé au moins partiellement dans un logement supérieur 39 délimité par le couvercle de fermeture 33, et comporte une paroi de filtration 41 pourvue d'une pluralité d'orifices de filtration 42. Avantageusement, la paroi de filtration 41 s'étend transversalement, et de préférence sensiblement perpendiculairement, à l'axe longitudinal central A du deuxième étage de séparation 12.The cyclonic separation device 4 further comprises a filtration element 38 configured to filter the air discharged by the second separation stage 12. According to the embodiment shown in the figures, the filtration element 38 is housed at least partially in an upper housing 39 delimited by the closure cover 33, and comprises a filtration wall 41 provided with a plurality of filtration orifices 42. Advantageously, the filtration wall 41 extends transversely, and preferably substantially perpendicularly, to the central longitudinal axis A of the second separation stage 12.

Comme montré plus particulièrement sur la figure 6, la deuxième portion d'extrémité 25.2 de chaque tube de refoulement central 25 débouche dans une chambre interne 46 délimitée par le couvercle de fermeture 33 et l'élément de filtration 38.As shown more particularly on the figure 6 , the second end portion 25.2 of each central delivery tube 25 opens into an internal chamber 46 delimited by the closure cover 33 and the filtration element 38.

Selon le mode de réalisation représenté sur les figures, le premier étage de séparation 11 comporte plusieurs nervures de déviation 43 s'étendant dans la chambre de séparation primaire 14 et configurées pour réduire la vitesse du flux d'air s'écoulant dans la chambre de séparation primaire 14. De façon avantageuse, chaque nervure de déviation 43 est prévue sur l'élément de séparation monobloc 29 et s'étend radialement en direction de la paroi latérale 15 du récipient de collecte de déchets 7.According to the embodiment shown in the figures, the first separation stage 11 comprises several deflection ribs 43 extending into the primary separation chamber 14 and configured to reduce the speed of the air flow flowing in the separation chamber. primary separation 14. Advantageously, each deflection rib 43 is provided on the one-piece separation element 29 and extends radially in the direction of the side wall 15 of the waste collection container 7.

Le dispositif de séparation cyclonique 4 peut en outre comporter des éléments de redressement de flux d'air 44 prévus sur la première portion d'extrémité 25.1 de chaque tube de refoulement central 25. Les éléments de redressement de flux d'air 44 prévus sur chaque tube de refoulement central 25 sont plus particulièrement configurés pour faire obstacle au mouvement tourbillonnaire de l'air circulant dans la chambre de séparation secondaire 21 respective et pour le rendre laminaire. De façon avantageuse, chaque élément de redressement de flux d'air 44 peut être formé par une ailette ou nervure de redressement s'étendant par exemple sensiblement radialement par rapport à l'axe longitudinal du tube de refoulement central 25 respectif. Les éléments de redressement de flux d'air 44 prévus sur chaque tube de refoulement central 25 sont avantageusement régulièrement répartis autour de l'axe longitudinal du tube de refoulement central 25 respectif.The cyclonic separation device 4 may further comprise air flow straightening elements 44 provided on the first end portion 25.1 of each central delivery tube 25. The air flow straightening elements 44 provided on each central discharge tube 25 are more particularly configured to obstruct the vortex movement of the air circulating in the respective secondary separation chamber 21 and to make it laminar. Advantageously, each airflow straightening element 44 may be formed by a straightening fin or rib extending, for example, substantially radially with respect to the longitudinal axis of the respective central discharge tube 25 . The air flow straightening elements 44 provided on each central discharge tube 25 are advantageously regularly distributed around the longitudinal axis of the respective central discharge tube 25 .

Le dispositif de séparation cyclonique 4 comporte en outre une poignée de préhension 45 facilitant sa manipulation par un utilisateur.The cyclonic separation device 4 further comprises a gripping handle 45 facilitating its handling by a user.

Le fonctionnement de l'aspirateur domestique 1 va maintenant être décrit. Lorsque le moto-ventilateur prévu dans le bâti 2 est alimenté électriquement, il établit une dépression dans le dispositif de séparation cyclonique 4 de telle sorte que de l'air et des déchets sont aspirés par la tête d'aspiration. L'air chargé de déchets pénètre ensuite dans la chambre de séparation primaire 14 via l'ouverture d'admission d'air 8 qui débouche tangentiellement dans cette dernière. L'air est ainsi mis en rotation et les déchets sont centrifugés vers l'extérieur et la majorité de ces déchets est collectée par le premier compartiment de collecte de déchets 17 où les vitesses d'air sont plus faibles. De plus, la présence des nervures de déviation 43 favorise la séparation des déchets du flux d'air circulant dans la chambre de séparation primaire 14. Les déchets de faible granulométrie, tels que des poussières fines, qui n'auront pas été séparés par le premier étage de séparation 11 suivent le flux d'air et passent ensuite à travers la grille de filtration 13 pour passer dans le deuxième étage de séparation 12, et plus particulièrement dans le volume interne 27. Le flux d'air se divise alors pour alimenter chaque séparateur cyclonique 18. Comme indiqué précédemment, les ouvertures d'entrée d'air 23 des différents séparateurs cycloniques 18.1, 18.2 du premier ensemble et du deuxième ensemble sont orientées différemment afin d'uniformiser l'alimentation des séparateurs cycloniques de telle sorte que chacun d'eux soit alimenté avec sensiblement la même portion de débit. L'air chargé de poussière fines passe ensuite dans les séparateurs cycloniques 18 et les poussières séparées sortent de ces derniers via les ouvertures de sortie de déchets 26 et sont collectées par le deuxième compartiment de collecte de déchets 28. L'air sensiblement épuré circulant de manière tourbillonnaire à travers chaque séparateur cyclonique 18 se dirige ensuite vers la première portion d'extrémité 25.1 du tube de refoulement central 25 respectif qui présente des éléments de redressement de flux d'air 44 afin de casser la rotation de l'air pour que ce dernier s'écoule ensuite avec un minimum de turbulence et de vitesse dans ledit tube de refoulement central 25, et ce afin de réduire la génération de bruit. L'air sort ensuite des tubes de refoulement centraux 25 et passe par l'élément de filtration 38 qui va retenir les poussières très fines qui n'auront pas été séparées par les premier et deuxième étages de séparation 11, 12. Lorsque les premier et deuxième compartiments de collecte de déchets 17, 28 sont partiellement remplis, l'utilisateur retire le dispositif de séparation cyclonique 4 du bâti 2, dépose le couvercle de fermeture 33 et désolidarise l'élément de séparation monobloc 29 de la paroi de fond 31 du récipient de collecte de déchets 7, puis verse les déchets contenus dans les premier et deuxième compartiments de collecte de déchets 17, 28 par exemple dans une poubelle, et enfin réassemble les différentes pièces les unes aux autres. Avantageusement, l'élément de filtration 38 est également démontable afin de pouvoir vider la chambre interne 46.The operation of the household vacuum cleaner 1 will now be described. When the fan motor provided in the frame 2 is electrically powered, it establishes a vacuum in the cyclonic separation device 4 so that air and waste are sucked in by the suction head. The air charged with waste then enters the primary separation chamber 14 via the air inlet opening 8 which opens tangentially into the latter. The air is thus rotated and the waste is centrifuged outwards and the majority of this waste is collected by the first waste collection compartment 17 where the air speeds are lower. In addition, the presence of the deflection ribs 43 promotes the separation of the waste from the air flow circulating in the primary separation chamber 14. Waste of small particle size, such as fine dust, which will not have been separated by the first separation stage 11 follow the air flow and then pass through the filtration grid 13 to pass into the second separation stage 12, and more particularly into the internal volume 27. The air flow then divides to supply each cyclone separator 18. As indicated previously, the air inlet openings 23 of the various cyclone separators 18.1, 18.2 of the first set and of the second set are oriented differently in order to standardize the supply of the cyclone separators so that each of them is supplied with substantially the same portion of flow. The air laden with fine dust then passes through the cyclone separators 18 and the separated dust leaves the latter via the waste outlet openings 26 and is collected by the second waste collection compartment 28. The substantially purified air circulating from vortex manner through each cyclone separator 18 then moves towards the first end portion 25.1 of the respective central discharge tube 25 which has airflow straightening elements 44 in order to break the rotation of the air so that this the latter then flows with a minimum of turbulence and speed in said central discharge tube 25, in order to reduce the generation of noise. The air then leaves the central discharge tubes 25 and passes through the filtration element 38 which will retain the very fine dust which will not have been separated by the first and second separation stages 11, 12. When the first and second waste collection compartments 17, 28 are partially filled, the user removes the cyclonic separation device 4 from the frame 2, removes the closure cover 33 and separates the one-piece separation element 29 from the bottom wall 31 of the waste collection container 7, then pours the waste contained in the first and second waste collection compartments 17, 28 for example into a trash can, and finally reassembles the different parts to each other. Advantageously, the filtration element 38 is also removable in order to be able to empty the internal chamber 46.

Claims (14)

  1. Cyclonic separation device (4) for home vacuum cleaner, comprising:
    - a waste collection container (7) comprising an air intake opening (8) and an air backflow opening (9),
    - a first separation stage (11) arranged in the waste collection container (7) and configured to separate the waste from the air penetrating into the waste collection container (7) through the air intake opening (8), and
    - a second separation stage (12) arranged in the waste collection container (7) and configured to separate waste from the air repelled through the first separation stage (11), the second separation stage (12) comprising a plurality of cyclonic separators (18) advantageously arranged parallel against one another, each cyclonic separator (18) comprising a tubular body (19) which delimits a secondary separation chamber (21) and an air intake conduit (22) comprising an air intake opening (23) and an air outlet opening (24) leading into the respective secondary separation chamber (21),
    wherein the plurality of cyclonic separators comprises a first assembly of cyclonic separators (18.1) which are arranged in a central region of the second separation stage (12), and a second assembly of cyclonic separators (18.2) which are distributed about a central longitudinal axis (A) of the second separation stage (12) and which are arranged around cyclonic separators (18.1) of the first assembly, the air intake openings (23) of the cyclonic separators (18.2) of the second assembly being oriented towards the central region of the second separation stage (12),
    wherein the first separation stage (11) comprises a filtration grille (13) and a primary separation chamber (14) delimited at least partially by a side wall (15) of the waste collection container (7) and by the filtration grille (13),
    wherein the filtration grille (13) comprises a plurality of discharge orifices intended for the discharging of an airflow in the direction of the second separation stage (12),
    characterised in that the air intake openings (23) of the cyclonic separators of the plurality of cyclonic separators (18) are located in an inner volume laterally delimited by the filtration grille (13).
  2. Cyclonic separation device (4) according to claim 1, wherein the air intake openings (23) of the cyclonic separators (18.2) of the second assembly are oriented substantially towards the central longitudinal axis (A) of the second separation stage (12).
  3. Cyclonic separation device (4) according to claim 1 or 2, wherein the air intake openings (23) of the cyclonic separators (18.1) of the first assembly are oriented such that, seen in a reference plane perpendicular to the central longitudinal axis (A) of the second separation stage (12) and for each cyclonic separator (18.1) of the first assembly, a straight line (D) passing through the central longitudinal axis (A) of the second separation stage (12) and the centre of the air intake opening (23) of a cyclonic separator (18.1) of the first assembly defines a tilt angle (α) of between 45 and 180° with respect to a normal (N) to an opening plane defined by said air intake opening (23).
  4. Cyclonic separation device (4) according to any one of claims 1 to 3, wherein the air intake openings (23) of the cyclonic separators (18.1) of the first assembly are oriented substantially tangentially with respect to the central longitudinal axis (A) of the second separation stage (12).
  5. Cyclonic separation device (4) according to any one of claims 1 to 4, wherein the cyclonic separators (18.2) of the second assembly are equidistant with respect to the central longitudinal axis (A) of the second separation stage (12).
  6. Cyclonic separation device (4) according to any one of claims 1 to 5, wherein the air outlet opening (24) of each cyclonic separator (18) of the plurality of cyclonic separators leads tangentially into the respective secondary separation chamber (21).
  7. Cyclonic separation device (4) according to any one of claims 1 to 6, wherein the air intake conduit (22) of each cyclonic separator (18) of the plurality of cyclonic separators extends helically.
  8. Cyclonic separation device (4) according to any one of claims 1 to 7, wherein each cyclonic separator (18) of the plurality of cyclonic separators comprises a central backflow tube (25) comprising a first end portion (25.1) leading into the respective secondary separation chamber (21) and a second end portion (25.2) opposite the first respective end portion (25.1).
  9. Cyclonic separation device (4) according to any one of claims 1 to 8, wherein the cyclonic separation device (4) further comprises a closing cover (33) fixed on an upper peripheral edge (34) of the waste collection container (7).
  10. Cyclonic separation device (4) according to claims 8 and 9, wherein the second end portion (25.2) of each central backflow tube (25) extends through a respective passage orifice (36) provided on the closing cover (33).
  11. Cyclonic separation device (4) according to any one of claims 1 to 10, wherein the tubular bodies (19) of the cyclonic separators (18) of the plurality of cyclonic separators are located under the filtration grille (13).
  12. Cyclonic separation device (4) according to any one of claims 1 to 11, wherein the first separation stage (11) is located around the second separation stage (12).
  13. Cyclonic separation device (4) according to any one of claims 1 to 12, which further comprises a filtration element (38) configured to filter the air repelled by the second separation stage (12).
  14. Home vacuum cleaner (1) comprising a cyclonic separation device (4) according to any one of the preceding claims.
EP19190390.5A 2018-09-18 2019-08-06 Cyclonic separation device for home vacuum cleaner Active EP3626145B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1858439A FR3085829B1 (en) 2018-09-18 2018-09-18 CYCLONIC SEPARATION DEVICE FOR DOMESTIC VACUUM CLEANERS

Publications (2)

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EP3626145A1 EP3626145A1 (en) 2020-03-25
EP3626145B1 true EP3626145B1 (en) 2022-11-02

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EP19190390.5A Active EP3626145B1 (en) 2018-09-18 2019-08-06 Cyclonic separation device for home vacuum cleaner

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EP (1) EP3626145B1 (en)
CN (2) CN110897552A (en)
ES (1) ES2932088T3 (en)
FR (1) FR3085829B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3060095B1 (en) * 2013-10-24 2018-09-26 Dyson Technology Limited A cyclonic separator having stacked cyclones

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2468150B (en) * 2009-02-27 2012-10-03 Dyson Technology Ltd Cyclonic separating apparatus
EP2581012B1 (en) * 2011-10-12 2015-01-21 Black & Decker Inc. A motor, fan and cyclonic separation apparatus arrangement for a vacuum cleaner
KR101649245B1 (en) * 2011-12-22 2016-08-18 다이슨 테크놀러지 리미티드 Cyclonic separating apparatus
GB2497944B (en) * 2011-12-22 2014-04-02 Dyson Technology Ltd Vacuum cleaner
CN103431810B (en) * 2013-08-13 2016-01-20 胡海荣 A kind of Seperated dust cup of whirlwind
KR101653459B1 (en) * 2014-12-01 2016-09-01 엘지전자 주식회사 Vacuum clenar and dust collecting apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3060095B1 (en) * 2013-10-24 2018-09-26 Dyson Technology Limited A cyclonic separator having stacked cyclones

Also Published As

Publication number Publication date
FR3085829B1 (en) 2020-10-23
CN210989988U (en) 2020-07-14
CN110897552A (en) 2020-03-24
ES2932088T3 (en) 2023-01-11
FR3085829A1 (en) 2020-03-20
EP3626145A1 (en) 2020-03-25

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