US20180000301A1 - Floor Vacuum Cleaner - Google Patents

Floor Vacuum Cleaner Download PDF

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Publication number
US20180000301A1
US20180000301A1 US15/542,562 US201515542562A US2018000301A1 US 20180000301 A1 US20180000301 A1 US 20180000301A1 US 201515542562 A US201515542562 A US 201515542562A US 2018000301 A1 US2018000301 A1 US 2018000301A1
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US
United States
Prior art keywords
vacuum cleaner
floor
fan unit
motorized fan
cleaner according
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.)
Abandoned
Application number
US15/542,562
Other languages
English (en)
Inventor
Ralf Sauer
Jan Schultink
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eurofilters Holding NV
Original Assignee
Eurofilters Holding NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eurofilters Holding NV filed Critical Eurofilters Holding NV
Assigned to EUROFILTERS HOLDING N.V. reassignment EUROFILTERS HOLDING N.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAUER, RALF, SCHULTINK, JAN
Publication of US20180000301A1 publication Critical patent/US20180000301A1/en
Abandoned legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • 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
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0633—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads
    • A47L9/064—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor
    • A47L9/0646—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor with pneumatic actuation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/32—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with means for connecting a hose
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/362—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the horizontal type, e.g. canister or sledge type
    • 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
    • A47L9/02—Nozzles
    • 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
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/22—Mountings for motor fan assemblies
    • 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
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/242—Hose or pipe couplings
    • A47L9/244—Hose or pipe couplings for telescopic or extensible hoses or pipes

Definitions

  • the invention relates to a floor vacuum cleaner.
  • Vacuum cleaners are available in a variety of different configurations or designs.
  • the best-known designs include the upright vacuum cleaner, the hand-held vacuum cleaner, and the floor vacuum cleaner.
  • An upright vacuum cleaner comprises a movable base unit above which an upper body with a vacuum cleaner container is arranged, where the two parts are mounted so as to be pivotable relative to each other.
  • An electrically driven brush is typically provided in the base unit.
  • An upright vacuum cleaner is shown, for example, in EP 2 030 551. Such vacuum cleaners are sometimes referred to as brush/beater vacuum cleaners.
  • the hand-held vacuum cleaner comprises a housing with a motor-driven fan and a dust collection chamber.
  • a suction tube on one side is led out from the housing, at the end of which a floor nozzle is disposed.
  • Disposed on the other side of the housing is a handle, optionally on a rod.
  • Floor vacuum cleaners comprise a housing which is mounted on rollers and/or runners.
  • a dust collection container is arranged in the housing and contains a filter bag.
  • a floor nozzle is via a suction tube and a suction hose connected to the dust collection chamber.
  • a motorized fan unit is further arranged in the housing and creates a negative pressure in the dust collection container. In the air flow direction, the motorized fan unit is therefore arranged downstream of the floor nozzle, the suction tube, the suction hose, and the dust collection container or the filter bag, respectively. Since cleaned air passes though such motorized fan units, they are sometimes referred to as clean air motors.
  • Such dirty air or fouled air motor fans are also referred to as a “dirty air motor” or “direct air motor”.
  • dirty air motors are also described in documents GB 554 177, U.S. Pat. Nos. 4,644,606, US 4,519,112, US 2002/0159897, US 5,573,369, US 2003/0202890 or US 6,171,054.
  • the object underlying the invention is to provide an improved floor vacuum cleaner.
  • a floor vacuum cleaner comprising a dust collector arrangement mounted on rollers and/or runners, a suction hose, a suction tube and a floor nozzle, wherein the floor nozzle is fluidically connected to the dust collector arrangement via the suction tube and the suction hose, also comprising a motorized fan unit for suctioning an air stream through the floor nozzle, wherein the motorized fan unit is arranged between the floor nozzle and the suction tube such that an air stream suctioned in through the floor nozzle flows through the motorized fan unit and into the suction tube.
  • a dirty air motor or direct air motor is thereby advantageously used in a floor vacuum cleaner. Even with low motor power, a high volumetric flow can be obtained with the floor vacuum cleaner according to the invention.
  • a dirty air motor for example, has a maximum rotational speed of less than 30,000 rpm and an electrical input power of less than 900 W.
  • the floor nozzle In the direction of air stream, the floor nozzle, sometimes referred to as a “suction nozzle”, is arranged upstream of the suction tube, the suction tube is arranged upstream of the suction hose, and the suction hose is arranged upstream of the dust collector arrangement.
  • the air stream sucked in by way of the motorized fan unit through the floor nozzle is first passed into the suction tube, followed by the suction hose, and subsequently into the dust collector unit. Due to the fluidic connection, a continuous air stream is ensured through the floor nozzle, the suction tube, the suction hose into the dust collector arrangement.
  • dirty air motors can also be advantageously used in floor vacuum cleaners, in particular in order to convey dirty air suctioned through the floor nozzle into the suction tube.
  • the motorized fan unit can be configured in such a way that, with an aperture of 8, it has a volumetric flow of more than 30 l/s, in particular of more than 40 l/s, and in particular of more than 50 l/s, at an electrical input power of less than 900 W according to DIN EN 60312-1.
  • the motorized fan unit can alternatively or additionally be configured in such a way that, with an aperture of 8 , it has a volumetric flow of more than 25 Its, in particular of more than 30 Its, and in particular of more than 40 l/s, at an electrical input power of less than 600 W according to DIN EN 60312-1.
  • the motorized fan unit can alternatively or additionally be configured in such a way that, with an aperture of 8, it has a volumetric flow of more than 15 Its, in particular of more than 25 1/s, and in particular of more than 30 1/s, at an electrical input power of less than 300 W according to DIN EN 60312-1.
  • the air data of a vacuum cleaner or a motorized fan unit is determined according to DIN EN 60312-1: 2014-01. In particular section 5.8 is made reference to.
  • Measuring device B according to section 7.3.7.3 is there used. If a motorized fan unit without a vacuum cleaner housing is measured, then measuring device B is likewise used. For possibly necessary adapters for connecting to the measuring chamber, the descriptions in section 7.3.7.1 apply.
  • volumemetric flow and “suction air flow” are also used for the term “air stream” according to DIN EN 60312-1.
  • the floor nozzle can have a base plate with a base surface which during operation of the floor vacuum cleaner faces the surface to be suctioned, where the base plate has at least one air flow channel parallel to the base surface with an opening provided laterally in the base plate.
  • the base plate with its base surface can during operation of the floor vacuum cleaner rest on the surface to be suctioned or, for example, be spaced thereform by way of a bristle strip.
  • the bottom plate is also referred to as a nozzle sole.
  • the floor nozzle comprises a suction opening for producing a fluidic connection with the motorized fan unit. This suction opening is in fluidic connection with the at least one air flow channel. With the at least one, in particular, one or more air flow channels, the contact pressure of the floor nozzle is advantageously adjusted for good suction power.
  • the openings being provided laterally in the base plate are provided transverse to the intended sliding direction of the floor nozzle.
  • One or more air flow channels can be provided from one side of the base plate to the opposite side of the base plate (in each case transverse to the sliding direction). In such end-to-end air flow channels, one opening is provided for each channel on either (opposite) side of the base plate.
  • the suction tube can have a diameter in a range from 25 mm to 50 mm, in particular from 30 mm to 45 mm, and in particular from 35 mm to 45 mm, and/or a length in a range from 600 mm to 1200 mm.
  • the suction tube can be formed to be rigid, in particular such that it can by a user not be deformed during the intended use.
  • the suction tube can be partially or completely made of plastic material or metal.
  • the suction hose can have a diameter in a range from 25 mm to 50 mm, in particular from 30 mm to 45 mm, and in particular from 35 mm to 45 mm, and/or a length in a range from 1000 mm to 2500 mm.
  • the suction hose can be configured to be flexible, in particular such that it can be deformed by a user when used as intended.
  • the suction hose can be partially or completely made of plastic material. It can in particular comprise a plastic wall and/or reinforcement made of metal (for example a spiral wire).
  • the suction tube and/or the suction hose can have a constant or a variable diameter over their respective lengths.
  • the suction tube and/or the suction hose can in particular have a tapering shape, where the diameter is preferably reduced towards the floor nozzle.
  • the above-mentioned diameters refer in particular to the smallest diameter of the suction tube or of the suction hose, respectively.
  • the floor nozzle can be configured and/or the motorized fan unit can be arranged such that no contact between the fan wheel of the test probe according to IEC/EN 60335 is possible through the floor nozzle.
  • test probe B is to be used.
  • the floor vacuum cleaner can be a bag vacuum cleaner, in particular having a filter area of at least 800 cm 2 , in particular of at least 1500cm 2 and in particular of at least 2500 cm 2 .
  • a bag vacuum cleaner is a vacuum cleaner in which the suctioned dust is separated and collected in a vacuum cleaner filter bag.
  • the floor vacuum cleaner can in particular be a bag vacuum cleaner for disposable bags.
  • the filter area of a vacuum cleaner filter bag designates the entire area of the filter material which is located between or within the edge seams (for example welding or adhesive seams). Any side or surface folds that may be present also need to be considered.
  • the area of the bag filling opening or inlet opening (including a seam surrounding this opening) is not part of the filter area.
  • the vacuum cleaner filter bag can be a flat bag or have a block bottom shape.
  • a flat bag is formed by two side walls made of filter material which are joined together (for example welded or glued) along their peripheral edges.
  • the bag filling opening or inlet opening can be provided in one of the two side walls.
  • the side faces or walls can each have a rectangular basic shape.
  • Each side wall can comprise one or more layers of nonwoven and/or nonwoven fabric.
  • the floor vacuum cleaner in the form of a bag vacuum cleaner can comprise a vacuum cleaner filter bag, where the vacuum cleaner filter bag is designed in the form of a flat bag and/or a disposable bag.
  • the bag wall of the vacuum cleaner filter bag can comprise one or more layers of a nonwoven and/or one or more layers of nonwoven fabric. It can in particular comprise a laminate of one or more layers of nonwoven and/or one or more layers of nonwoven fabric. Such a laminate is described, for example, in WO 2007/068444.
  • nonwoven fabric is used within the meaning of standard DIN EN ISO 9092:2010.
  • film and paper structures in particular filter paper, are there not regarded as being nonwoven fabric.
  • “Nonwoven” is a structure made of fibers and/or continuous filaments or short fiber yarns shaped into a surface structure by some method (except interlacing of yarns such as woven fabric, knitwear, lace, or tufted fabric) but not bonded by some method. With a bonding process, a nonwoven turns into nonwoven fabric.
  • the nonwoven or nonwoven fabric can be dry laid, wet laid or extruded.
  • the floor vacuum cleaner can comprise a blow-out filter, in particular having a filter area of at least 800 cm 2 .
  • the blow-out filter can in particular be configured to be pleated or folded. This makes it possible to obtain a large surface area at a smaller base area.
  • the blow-out filter can be provided in a holder, as described, for example, in European patent application No. 14179375.2.
  • Such blow-out filters allow the use of vacuum cleaner filter bags with low separation efficiency, for example, of single-layer vacuum cleaner filter bags.
  • a bag can be used as a vacuum cleaner filter bag with low separation efficiency in which the filter material of the bag wall consists of a spunbond with a surface weight of 15 g/m2 to 100 g/m2.
  • the vacuum cleaner filter bag can therefore be formed in particular having a single layer.
  • a bag can alternatively be used in which the filter material of the bag wall consists of a laminate made of a spunbond, a meltblown and a further spunbond (SMS).
  • the floor vacuum cleaner can be a bagless vacuum cleaner, in particular with a blow-out filter as described above having a filter area of at least 800 cm2.
  • a bagless vacuum cleaner is a vacuum cleaner in which the suctioned dust is separated and collected without a vacuum cleaner filter bag.
  • the dust collector unit can comprise an impact separator or a centrifugal separator or a cyclone separator, respectively.
  • the motor fan unit can be arranged on and/or above the floor nozzle, in particular directly on top of and/or above the floor nozzle. This leads to advantageous suction performance. Moreover, a compact structure of the unit composed of the floor nozzle and the motorized fan unit can be obtained.
  • the motorized fan unit can be arranged such that air suctioned through the floor nozzle enters the motorized fan unit directly from the floor nozzle.
  • the motorized fan unit can be fluidically connected to the floor nozzle via a tube member.
  • the motorized fan unit is no longer arranged directly on and/or above the floor nozzle.
  • the tube member can have a length of 10 mm to 1200 mm, preferably 10 mm to 300 mm.
  • the motorized fan unit can comprise an (in particular single stage) radial fan.
  • a radial fan the air is suctioned parallel or axially relative to the drive axis of the fan wheel and deflected by the rotation of the fan wheel, in particular by approximately 90° , and blown out radially.
  • the above-described floor vacuum cleaners can comprise a second motorized fan unit.
  • the second motorized fan unit can be a dirty air motor or a clean air motor (as described above).
  • the second motorized fan unit can be arranged, for example, between the floor nozzle and the suction tube such that an air stream suctioned through the floor nozzle flows through the second motorized fan unit into the suction tube.
  • the second motorized fan unit can in particular be arranged fluidically directly downstream of the first motorized fan unit.
  • the motorized fan unit can be arranged between the suction hose and the dust collector unit such that an air stream suctioned through the suction hose flows through the second motorized fan unit into the dust collector unit.
  • the dust collector unit can comprise a housing, where the second motorized fan unit is arranged on the housing.
  • the second motorized fan unit can be arranged fluidically downstream of the dust collector unit.
  • the first and second motorized fan units can have the same or different electrical power input.
  • the electrical input power of each motorized fan unit can in particular be between 50 and 400 W.
  • the sum of the electrical input power of both motorized fan units can in particular be at most 900 W.
  • the floor nozzle can be an active or a passive floor nozzle.
  • An active floor nozzle has a brush roller (sometimes also referred to as a beating and/or rotation brush) in the suction opening.
  • the brush roller can be driven electro-motorically
  • a passive floor nozzle has no brush roller.
  • FIG. 1 shows a first embodiment of a floor vacuum cleaner
  • FIG. 2 shows a second embodiment of a floor vacuum cleaner.
  • FIG. 1 illustrates an example of a floor vacuum cleaner 1 .
  • Floor vacuum cleaner 1 shown comprises a dust collector unit 2 which is mounted on rollers 3 and can therefore be moved in a rolling manner.
  • a suction hose 4 Connected to dust collector unit 2 is a suction hose 4 which in turn is connected to a suction tube 5 .
  • Suction hose 4 comprises flexible material which is in particular deformable during operation. The material used is, for example, plastic material.
  • the hose can be connected to dust collector unit 2 detachable in a nondestructive manner or detachable not in a nondestructive manner.
  • Suction tube 5 is formed to be rigid so that it can not be deformed by a user during the intended use.
  • the material of suction tube 5 can be plastic material or metal.
  • the connection between the suction tube and the suction hose can formed to be detachable in a nondestructive manner or detachable not in a nondestructive manner.
  • a handle 6 is also attached to suction tube 5 .
  • Floor vacuum cleaner 1 further comprises a floor nozzle 7 which is via a tube member 8 connected to a motorized fan unit 9 .
  • a tilting joint, a rotary joint or a rotary/tilting joint can respectively be provided at the connection point between tube member 8 and motorized fan unit 9 and/or between floor nozzle 7 and tube member 8 and/or motorized fan unit 9 and suction tube 5 .
  • Such a joint can also be realized, for example, by way of a bellows.
  • a continuous fluidic connection to dust collector unit 2 is therefore established by floor nozzle 7 , tube member 8 , motorized fan unit 9 , suction tube 5 and suction hose 4 .
  • Motorized fan unit 9 is there arranged between floor nozzle 4 and suction tube 5 so that dirty air suctioned through the floor nozzle flows through motorized fan unit 9 into suction tube 5 .
  • Motorized fan unit 9 is therefore a dirty air motor.
  • This is in particular a motorized fan unit comprising a single-stage radial fan.
  • the motorized fan unit has a fan wheel the axis of which is during intended use parallel to the surface to be suctioned and perpendicular to the intended sliding direction of the floor nozzle.
  • the fan diameter can be 60 mm to 160 mm.
  • a motorized fan unit for example, from the company AMETEK, Inc. can be used, which is also used in Soniclean Upright vacuum cleaners (e.g. SONICLEAN VT PLUS).
  • the motorized fan unit of the SONICLEAN VT PLUS was characterized according to DIN EN 60312-1:2014-01 as explained above.
  • the motorized fan unit was measured without the vacuum cleaner housing.
  • the descriptions in section 7.3.7.1 apply.
  • the table shows that high volumetric flows are obtained at low rotational speeds and low input power.
  • Air is during operation sucked in by motorized fan unit 9 .
  • the air stream there enters vacuum cleaner 1 through an opening of floor nozzle 7 is passed through tube member 8 and motorized fan unit 9 and subsequently flows into suction tube 5 .
  • the motorized fan unit is arranged in the dust collector unit, resulting in the entire system comprising the floor nozzle, the suction tube and the suction hose as well as the dust collector unit itself being subjected to negative pressure.
  • these elements In order to prevent deformation of the suction tube, the suction hose and/or the dust collector arrangement due to the negative pressure, these elements must typically be reinforced. In the configuration illustrated in FIG. 1 , this is not required or only to a small degree because of the overpressure in suction tube 5 , suction hose 4 , and dust collector unit 2 .
  • FIG. 1 The example shown in FIG. 1 is a bag vacuum cleaner.
  • a vacuum cleaner filter bag 11 arranged in dust collector unit 2 is a vacuum cleaner filter bag 11 in which the suctioned dirt and dust is separated.
  • This vacuum cleaner filter bag can be, in particular, a flat bag, the bag walls of which comprise one or more layers of nonwoven and/or nonwoven fabric.
  • the vacuum cleaner filter bag is embodied as a disposable bag.
  • blow-out filter When using in particular single-layer vacuum cleaner filter bags in which the bag wall is composed, for example, of exactly one nonwoven fabric layer in the form of a spunbond, the use of a blow-out filter is advantageous.
  • the dust filter can be used to filter fine dust which has not been separated in the vacuum cleaner filter bag.
  • Such a blow-out filter can have an area of at least 800 cm 2. It can in particular be formed to be pleated or folded in order to have a large surface area at a smaller base area (than the surface area).
  • Suction hose 4 typically has a diameter in a range of 25 mm to 50 mm and a length in a range of 1000 mm to 2500 mm.
  • Suction tube 5 typically has a diameter in a range of 25 mm to 50 mm and a length in a range of 600 mm to 1200 mm.
  • Suction tube 5 is formed to be rigid and suction hose 4 is formed to be flexible.
  • FIG. 2 shows an alternative embodiment of a floor vacuum cleaner 1 in which the same elements are provided with the same reference symbols as, in FIG. 1 .
  • motorized fan unit 9 is arranged directly on and above floor nozzle 7 .
  • the axis of the fan wheel of motorized fan unit 9 is during the intended use arranged vertical, i.e., perpendicular to the surface to be suctioned.
  • the suctioned air enters floor nozzle 7 through a suction opening and through a suction mouth provided in floor nozzle 7 directly into motorized fan unit 9 from where it flows into suction tube 5 . Accordingly, an overpressure is present in the suction tube (and also in the suction hose fluidically downstream thereof).
  • Dust collector unit 2 comprises a centrifugal separator or cyclone separator 10 , respectively, in which the suctioned dirt and dust particles are separated by centrifugal force. It can be a single cyclone or a multi-cyclone vacuum cleaner. Alternatively, the bagless floor vacuum cleaner can also be designed as an impact separator.
  • Dust collector unit 2 comprises a blow-out filter with which fine dust is filtered which has not been separated in the centrifugal separator.
  • This blow-out filter can have an area of at least 800 cm 2 . It can in particular be formed to be pleated or folded in order to have a large surface area at a smaller base area.
  • the blow-out filter can there be provided in a holder, as described in European patent application No. 14179375.2.
  • FIGS. 1 and 2 can also be combined with one another in other ways.
  • the arrangement of the motorized fan unit according to FIG. 1 can in particular also be used in the example according to FIG. 2 , and the arrangement of the motorized fan unit in FIG. 2 in the example according to FIG. 1 .
  • the floor vacuum cleaner can also comprise a second, assist motorized fan unit. It has been found that the use of two motorized fan units during operation of the floor vacuum cleaner can result in a lower suction power loss as compared to the use of a single motorized fan unit, even if the sum of the electric input power of the two motorized fan units is equal to the electric input power of the one motorized fan unit.
  • the second motorized fan unit can be designed as a dirty air motor and can be arranged fluidically upstream of the dust collector unit so that the dirty air also flows through the second motorized fan unit.
  • the two motorized fan units can have identical or different electrical power inputs.
  • the second motorized fan unit can be designed as a clean air motor and can be arranged fluidically downstream of the dust collector unit.
  • a motorized fan unit from the company Domel with the model name 467.3.601-4 (to be acquired from Domel, doo Otoki 21, 4228 2 elezniki, Slovenija) can be used.
  • a brush roller for example a beating brush and/or a rotating brush
  • a brush roller for example a beating brush and/or a rotating brush

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
US15/542,562 2015-01-20 2015-12-11 Floor Vacuum Cleaner Abandoned US20180000301A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15151738.0A EP3047774B1 (de) 2015-01-20 2015-01-20 Bodenstaubsauger
EP15151738.0 2015-01-20
PCT/EP2015/079466 WO2016116221A1 (de) 2015-01-20 2015-12-11 Bodenstaubsauger

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US20180000301A1 true US20180000301A1 (en) 2018-01-04

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US15/542,562 Abandoned US20180000301A1 (en) 2015-01-20 2015-12-11 Floor Vacuum Cleaner

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US (1) US20180000301A1 (de)
EP (1) EP3047774B1 (de)
CN (1) CN107105948B (de)
AU (1) AU2015378046B2 (de)
DK (1) DK3047774T3 (de)
ES (1) ES2673249T3 (de)
PL (1) PL3047774T3 (de)
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EP3047774B1 (de) 2018-04-25
DK3047774T3 (en) 2018-07-16
CN107105948B (zh) 2021-08-20
PL3047774T3 (pl) 2018-09-28
AU2015378046A1 (en) 2017-06-15
AU2015378046B2 (en) 2018-03-15
CN107105948A (zh) 2017-08-29
RU2674866C1 (ru) 2018-12-13
WO2016116221A1 (de) 2016-07-28
EP3047774A1 (de) 2016-07-27

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