EP4340689A1 - Appareil de buse pour sol et dispositif de nettoyage par aspiration - Google Patents

Appareil de buse pour sol et dispositif de nettoyage par aspiration

Info

Publication number
EP4340689A1
EP4340689A1 EP21728496.7A EP21728496A EP4340689A1 EP 4340689 A1 EP4340689 A1 EP 4340689A1 EP 21728496 A EP21728496 A EP 21728496A EP 4340689 A1 EP4340689 A1 EP 4340689A1
Authority
EP
European Patent Office
Prior art keywords
floor nozzle
channel
width
mouth
width direction
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.)
Pending
Application number
EP21728496.7A
Other languages
German (de)
English (en)
Inventor
Markus SPROLL
Dominik Scholl
Tobias GELTZ
David Thomas
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP4340689A1 publication Critical patent/EP4340689A1/fr
Pending legal-status Critical Current

Links

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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0466—Rotating tools
    • 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
    • A47L9/04—Nozzles with driven brushes or agitators
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • 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
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0466—Rotating tools
    • A47L9/0477—Rolls

Definitions

  • the invention relates to a floor nozzle device, comprising a receiving chamber with a receiving space which is open on one side of the floor, at least one cleaning roller which is arranged in the receiving space and can be rotated about an axis of rotation, and a suction connection which, during operation of the floor nozzle device, is supplied with a suction stream is charged.
  • the invention also relates to a vacuum cleaning device.
  • Suction nozzles are known, for example, from US Pat. No. 4,315,344, US Pat US 2009/0320234 A or US 2012/066858 A is known.
  • suction nozzles are known from US 2016/0302634 A, DE 10 2020 141 514 A1, DE 10 2015 105 415 A1, WO 2016/173859 A3 or DE 10 2015 108 157 A1.
  • WO 2016/202610 A1 discloses a suction nozzle for a vacuum cleaner.
  • the object of the invention is to provide a floor nozzle device of the type mentioned at the outset, in which suction at the receiving space is optimized.
  • a funnel-shaped channel device is arranged between the receiving space and the suction connection which opens into the receiving space with an orifice and which is connected to the suction connection or comprises the suction connection, and that the orifice has a width in a width direction parallel to the axis of rotation with at least one of the following: the width of the orifice is at least 30 % of a width of the accommodation space in the width direction; the width of the mouth is at least twice and in particular at least three times a width of an opening of the suction port in the width direction.
  • the channel means provides a flow-guiding transition from the suction port to the mouth.
  • the mouth is wide in the width direction compared to the suction port.
  • the channel device according to the invention makes it possible for the receiving space to have a homogeneous flow profile over a large width of the receiving space in the width direction and in particular over the entire width. This allows an optimized extraction result to be achieved.
  • a relatively low flow resistance can be achieved via the channel device.
  • the width of the mouth extends over at least 50% of the width of the receiving space and in particular over at least 70% of the width of the receiving space and preferably over at least 80% and preferably over at least 90% of the width of the receiving space in the width direction extends.
  • the configuration of the channel device is funnel-shaped only in the width direction. It is intended that a maximum height of the orifice in a height direction transverse to the width direction is smaller than a height of the opening of the suction port in the height direction, and in particular the height of the opening is at least twice the maximum height of the orifice.
  • it can be achieved that a cross-sectional area of the channel device remains the same or decreases continuously from the mouth to the suction connection, with a homogeneous flow profile being able to be achieved for the suction at the receiving space.
  • the mouth is slit-shaped with a width in the width direction which is at least three times larger, and in particular at least five times larger and in particular at least ten times larger than a maximum height of the mouth in a height direction transverse to the pulp direction.
  • an optimized flow profile can be achieved in the receiving space (which is a suction channel). The result is an optimized suction and thus an optimized cleaning result.
  • the opening of the suction port has a round or oval shape. This results in a simple structural design.
  • the channel device conveys the transition from the round or oval opening to a particularly slit-shaped opening.
  • a cross-sectional width of the duct device which lies between lateral duct walls in the width direction, remains the same or decreases from the mouth to the opening of the suction connection.
  • the cross-sectional width is the distance between the lateral channel walls in the width direction.
  • a cross-sectional height of the duct device which is between an upper duct wall and a lower duct wall in a height direction transverse to the width direction, increasing from the mouth toward the opening of the suction port, with the lower channel wall facing the bottom side and the upper channel wall facing the lower channel wall. This results in an optimized flow result.
  • a decrease in the cross-sectional width of the channel device from the mouth to the opening of the suction port is so correlated with an increase in the cross-sectional height of the channel device from the mouth to the suction port that a cross-sectional area of the channel device decreases continuously from the mouth to the suction port.
  • the mouth is spaced from the underside of a body of the floor nozzle device on which the receiving chamber is arranged. This enables optimized dirt removal to be achieved. Dirt can also be thrown from the cleaning roller into the channel device via the mouth in order to ensure optimized dirt removal.
  • the channel device has at least one coarse dirt removal device, which leads into the receiving space.
  • the mouth is designed in the form of a slit with a height which is much smaller than a width. This makes it possible to achieve a homogeneous flow profile in the receiving space. This can fundamentally make it more difficult to pick up coarse dirt. If at least one coarse dirt removal device is also present, coarse dirt can in turn be removed effectively.
  • a height of the channel device on the at least one coarse dirt removal device in a height direction transverse to the width direction is greater than a height of the channel device outside the at least one coarse dirt removal device;
  • a height of the mouth at the at least one coarse dirt removal device is in the range between 5 mm and 30 mm;
  • the at least one coarse dirt removal device is arranged relative to the width direction between a lateral outer end of the channel device and a central plane, which is oriented perpendicularly to the width direction, and in particular at a distance from the lateral outer end and in particular at a distance from the central plane; at least two and in particular exactly two coarse dirt removal devices are provided;
  • Coarse dirt removal devices are arranged symmetrically to a central plane which is perpendicular to the width direction.
  • the height of the channel device on a coarse dirt removal device By increasing the height of the channel device on a coarse dirt removal device, larger particles that cannot get into the channel device at the mouth outside of the coarse dirt removal device can be removed.
  • the height of the mouth on a coarse dirt removal device is between 10 mm and 30 mm.
  • the at least one coarse dirt removal device is arranged at a distance both in relation to a central plane and in relation to a lateral outer end. It is particularly advantageous if two, and in particular exactly two, coarse dirt removal devices are provided. On the one hand, this allows optimal removal of coarse dirt. Furthermore, the channel device at the mouth can be formed with a relatively high degree of symmetry in order to achieve a homogeneous flow profile in the receiving space even when removing coarse dirt.
  • At least one recess is formed on a wall of the channel device to form the at least one coarse dirt removal device.
  • a cross-sectional enlargement can be achieved “locally” in the area of the recess.
  • a homogeneous flow profile can be obtained.
  • the at least one recess is formed on an upper side of the wall of the channel device, which faces away from the bottom side; the at least one recess forms a channel-shaped cross-sectional area enlargement area towards an interior of the channel device; the at least one channel device has a rounded wall profile at the at least one recess.
  • a coarse dirt removal device can then be implemented in a structurally simple manner, with the area of the coarse dirt discharge device, the channel device locally has an enlarged cross-section. A homogenized flow profile is not significantly disturbed by this.
  • the mouth has an underside, which faces the bottom side, and has an upper side opposite the underside, with at least one of the following: the underside has a substantially rectilinear course; the upper side has a course deviating from the straight line with steps and/or bulges; a clearance between the bottom and the top is in the range of 2 mm to 30 mm; a distance between the underside and the upper side is between 2 mm and 15 mm outside of a coarse dirt removal device that may be present.
  • the channel device can be formed in a structurally simple manner.
  • the height of the mouth is between 2 mm and 30 mm in a height direction transverse to the width direction and outside a coarse dirt removal device, if one is present, is in the range between 2 mm and 15 mm.
  • the height of the mouth in the height direction is in the range between 2 mm and 15 mm if a coarse dirt removal device that may be present is not taken into account. In this way, a homogenized flow profile for the receiving space can be achieved in a structurally simple manner.
  • the duct device has a first area at the mouth in relation to the width direction, which is delimited by a lateral outer duct wall, and has a second area which adjoins the first area, the first area being of a smaller height than the second region, in particular, a width of the accommodation space in the width direction is at least 400 mm. It has been shown that the homogenization of the flow profile over the entire width of the receiving space can then be improved. In particular, it has been found that the flow profile can be homogenized with broad floor nozzle devices (with a width of at least 400 mm).
  • the height of the first area is in the range between 2 mm and 8 mm.
  • the height of the second area is in the range between 5 mm and 30 mm and outside a coarse dirt removal device, if one is present, is in the range between 5 mm and 15 mm.
  • a homogenized flow profile then results in the receiving space.
  • At least one flow area is arranged or formed in the channel device. This allows the flow conditions to be specifically influenced. In particular, it can then be achieved that flow resistance is minimized and a homogenized flow profile is achieved in the receiving space.
  • the at least one flow area is formed by a recess on the channel device; the at least one flow area is spaced apart from the mouth; the at least one flow area is spaced apart from the suction port; the at least one flow area lies on a central plane; the at least one flow area is arranged and/or formed symmetrically or asymmetrically to a central plane of the channel device, the central plane being oriented perpendicularly to the width direction; the at least one flow-around area has a geometric center and an extension of the at least one flow-around area away from the center perpendicular to the width direction, this extension being greater than a width of the at least one flow-around area parallel to the width direction at the geometric center; a cross-sectional area of the at least one flow area, which forms a blocking area for a flow, is at most 90% of a total cross section of the channel device including the at least one flow area; the at least one flow area is edge-free or provided with edges; the at least one flow area
  • the at least one flow-around area is formed by a recess on the channel device, it can be produced in a simple manner.
  • the recess can be used to position elements of the floor nozzle device.
  • the recess can be used to provide a fastening point for a soleplate on the floor nozzle device.
  • Optimized flow conditions result when the at least one flow area is at a distance from the mouth and at a distance from the suction connection.
  • At least one flow area is located on a central plane.
  • the at least one flow area can be arranged and/or formed symmetrically or asymmetrically to the central plane, depending on the design of the channel device and application.
  • the flow area is egg-shaped or drop-shaped, having an extent perpendicular to the width direction, which, starting from a geometric center point, is greater than the extent in the width direction at this geometric center point.
  • a flow resistance coefficient for the at least one flow area i.e. the Cw value, is less than or equal to 3, based on a Reynolds number of 2300.
  • the channel device is arranged above a sliding sole relative to the bottom side.
  • a recess use the channel device to form a flow area for attaching the soleplate.
  • a drive motor for the at least one cleaning roller is arranged on a body of the floor nozzle device and that the drive motor is positioned between the suction connection and the mouth of the channel device, with the channel device in particular being related to a central plane which perpendicular to the width direction is formed asymmetrically to provide space for the drive motor to.
  • the channel device then has such an external shape that an optimized use of space on the floor nozzle device is achieved.
  • the at least one cleaning roller is, for example, a brush roller or a textile roller.
  • the cleaning roller is a brush roller.
  • the cleaning roller it is also possible, for example, for the cleaning roller to be a textile roller which has a textile covering and is used in a wet floor vacuum cleaning device.
  • the suction connection is subjected to a suction flow and the at least one cleaning roller rotates. This allows an optimized cleaning result to be achieved.
  • a suction cleaning device which comprises a suction fan device and a floor nozzle device according to the invention, the suction fan device being in fluid communication with the suction connection of the floor nozzle device.
  • the vacuum cleaning device is designed as a carpet brush vacuum cleaning device.
  • the cleaning roller is then in particular a brush roller.
  • the vacuum cleaning device is designed, for example, as an upright device that can be operated by a standing operator.
  • the floor nozzle device is then arranged detachably on a device body.
  • the vacuum cleaning device it is also possible for the vacuum cleaning device to be designed as a self-propelled and self-steering cleaning device (as a cleaning robot).
  • FIG. 1 shows a partial side view of a first exemplary embodiment of a vacuum cleaning device according to the invention with an exemplary embodiment of a floor nozzle device according to the invention
  • FIG. 2 shows a bottom view of the floor nozzle device according to FIG. 1 in direction A;
  • Figure 3 is the same view as Figure 2 with a soleplate removed;
  • FIG. 4 is a sectional view taken along line 4-4 of Figure 2;
  • FIG. 5 shows an enlarged representation of the region B according to FIG
  • FIG. 6 shows a partial view of the floor nozzle device according to FIG. 1 in the direction C, with components having been removed;
  • FIG. 7 shows an exemplary embodiment of a channel device in a plan view
  • FIG. 8 shows another view of the channel arrangement according to FIG. 7;
  • FIG. 9 shows a side view of the channel device according to FIG. 7;
  • FIG. 10 shows a further exemplary embodiment of a channel device
  • FIG. 11 shows a second exemplary embodiment of a vacuum cleaning device according to the invention in the form of a self-propelled and self-steering cleaning device (cleaning robot);
  • FIG. 12 shows a side view of the suction cleaning device according to FIG. 11;
  • FIGS. 13 to 18 show a schematic plan view of exemplary embodiments of a duct device similar to that in FIG. 10 with different examples of flow areas.
  • a first exemplary embodiment of a vacuum cleaning device which is shown in FIG. 1 in a partial side view, is a carpet brush cleaning device.
  • the vacuum cleaning device 10 comprises a floor nozzle device 12.
  • a device body 14 is arranged on the floor nozzle device 12 in particular in a pivotable manner.
  • the suction cleaning device 10 is designed as an upright device which can be used by a standing operator.
  • a corresponding grip device or guide device is arranged on the device body 14 (not shown in FIG. 1).
  • a suction fan device 16 is seated on the device body. During cleaning operation of the suction cleaning device 10, the suction fan device 16 generates a suction stream, with which the floor nozzle device 12 is acted upon.
  • the vacuum cleaning device 10 is placed on a floor 18 to be cleaned via the floor nozzle device 12 .
  • the floor nozzle device 12 is connected to the device body 14 in a detachable or non-detachable manner.
  • FIG. 1 An exemplary embodiment of a floor nozzle device 12 (FIGS. 1 to 6) comprises a body 20.
  • the body 20 has a front face 22. FIG. It extends in a width direction 24 between a first transverse side 26 and an opposite second transverse side 28.
  • the front end face 22 lies between the first transverse side 26 and the second transverse side 28.
  • a wheel device 30 is arranged on the body 20 opposite the front end face 22 and has a first wheel 32 and a second wheel 34 spaced apart in the width direction 24 .
  • the body 20 has a smaller width in the area of the wheel device 30 than on the front face 22.
  • the floor nozzle device 12 can be supported on the floor 18 via the wheel device 30 and thus the vacuum cleaning device 10 can also be supported.
  • another wheel device 36 is arranged in the area of the front face 22 in the area of the front face 22. This comprises a first wheel 38 and a second wheel 40 spaced apart from the first wheel 38 in the width direction 24.
  • first wheel 32 and the second wheel 34 have the same diameter.
  • the first wheel 38 and the second wheel 40 also have an equal diameter, with the diameter of the wheel 38 and the second wheel 40 being smaller than the diameter of the wheels 32, 34 of the wheel assembly 30.
  • first wheel 32 and the first wheel 38 and the second wheel 34 and the second wheel 40 are each aligned in a direction 42 that is perpendicular to the widthwise direction 24 .
  • the floor nozzle device 12 and thus the vacuum cleaning device 10 are supported on the floor 18 to be cleaned via the wheel device 30 and the further wheel device 36.
  • a receiving chamber 44 is arranged on the body 20 .
  • the receiving chamber is positioned between the wheel assembly 30 and the other wheel assembly 36 . It is closer to the front end face 22 than to the wheel device 30 or is closer to the further wheel device 36 than to the wheel device 30.
  • the receiving chamber 44 includes a receiving space 46.
  • a cleaning roller 48 is positioned on the receiving chamber 44 and is rotatably mounted in the receiving space 46 about an axis of rotation 50.
  • the width direction 24 is parallel to the axis of rotation 50.
  • a single cleaning roller 48 or a one-piece cleaning roller 48 is provided.
  • a plurality of cleaning rollers in particular with a common axis of rotation 50
  • a multi-part cleaning roller with the same axis of rotation 50
  • the cleaning roller 48 is a brush roller with a set of bristles 52.
  • a carpet cleaning device is thereby realized as a vacuum cleaning device 10.
  • the cleaning roller has a textile trimming, for example.
  • the cleaning roller 48 it is also possible for the cleaning roller 48 to have both a bristle trimming 52 and a textile trimming.
  • the body 20 of the floor nozzle device 12 has an underside 54.
  • This underside 54 is a bottom side 56 which faces the floor 18 when the floor nozzle device 12 is properly positioned over the wheel devices 30, 36 on the floor 18.
  • the receiving space 46 is open to the bottom side 56, so that the cleaning roller 48 can act on the floor 18 in this area; the receiving chamber 44 has an opening 58 on the bottom side 56.
  • the opening 58 is in particular contiguous and continuous, so that a correspondingly large area of action of the cleaning roller 48 on the floor 18 to be cleaned is provided.
  • the cleaning roller 48 is rotatably mounted on the receiving chamber 44 and thereby on the body 20 via a rotary bearing 60 about the axis of rotation 50 .
  • the rotary bearing 60 has a first bearing part 62a and a second bearing part 62b, which are spaced apart in the width direction 24 and, in particular, laterally delimit the receiving space 46 with respect to the width direction 24; the first bearing part 62a is assigned to the first transverse side 26 and the second bearing part 62b is assigned to the second transverse side 28 .
  • a width of the cleaning roller 48 in the width direction 24 is smaller than a width of the body 20 in this direction.
  • a drive motor 64 (see Figure 6) is mounted on body 20 .
  • This drive motor 64 is in particular an electric motor. It is provided ver on the device body 14 with electrical energy.
  • a battery device is arranged on the device body 14 (and in particular a rechargeable battery device is arranged), which provides the drive motor 64 with electrical energy.
  • the device body 14 it is also possible for the device body 14 to have a mains connection and for electrical energy to be provided to the drive motor 64 via a corresponding supply device on the device body 14 .
  • drive motor 64 is located on body 20 between wheel assembly 30 and receiving chamber 44 (see Figure 6), specifically being located closer to wheel assembly 30 than to receiving chamber 44.
  • a center plane 66 is assigned to the floor nozzle device 12 .
  • the central plane 66 is located in the middle between the first transverse side 26 and the second transverse side 28. It is oriented perpendicular to the width direction 24 and thus perpendicular to the axis of rotation 50.
  • the body 20 is geometrically divided into a first half part 68 and a second half part 70 by the central plane 66 , the first transverse side 26 lying on the first half part 68 and the second transverse side 28 lying on the second half part 70 .
  • the drive motor 64 is in one half.
  • the drive motor 64 is located in the first half part 68 (compare FIG. 6).
  • the drive motor 64 lies on a line that is perpendicular to the width direction 24 (in the direction 42) between the first wheel 32 and the first wheel 38 .
  • a torque transmission device 72 is provided for torque transmission from the drive motor 64 to the cleaning roller 48 in order to effect its rotational movement about the axis of rotation 50 .
  • the torque transmission device 72 bridges a distance between the drive motor 64 and the cleaning roller 48, in particular in the direction 42.
  • the torque transmission device 28 is arranged on the same half part as the drive motor 64. In the exemplary embodiment shown, it is arranged on the first half part 68 and is arranged adjacent to the first transverse side 26.
  • the torque transmission device 72 is or includes a belt drive, for example.
  • the torque transmission device 72 also includes a speed reducer, so that the speed of the cleaning roller 48 is lower than the speed of the drive motor 64.
  • a width of the cleaning roller 48 in the width direction 24 is substantially smaller than a width of the body 20 in the width direction 24 by the amount which is the sum of a width of housing walls, a width of the first bearing part 62a and a width of the second bearing part 62b and a width of torque transmission device 72 in width direction 24 in each case.
  • roller motor 64 it is also possible for the drive motor 64 to be integrated into the cleaning roller 48 (“roller motor”).
  • the drive motor it is also fundamentally possible for the drive motor to be integrated into the device body 14 , for example, or to be arranged between the device body 14 and the body 20 .
  • the cleaning roller 48 is driven in rotation via one side, namely via the side which faces the first bearing part 62a or which faces the first transverse side 26 .
  • the drive motor 64 it is also possible, for example, for the drive motor 64 to be arranged in such a way that the cleaning roller 48 is driven centrally.
  • a soleplate 74 is arranged on the underside 24 of the body 20 .
  • the soleplate 74 is positioned between the receiving chamber 44 and the wheel assembly 30 .
  • the sliding sole 74 comprises a first area 76 and a second area 78.
  • the second area 78 is the actual sliding sole area and is fixed to the first area 76 and, in particular, formed in one piece with it.
  • the second area 78 corresponds to the additional wheel device 36.
  • the second area 78 which extends in particular in the width direction over the entire width of the floor nozzle device 12, lies on a plane 80 with the wheel device 30 and the additional wheel device 36.
  • FIG a cleaning operation of the suction cleaning device 10 this via the floor nozzle device 12 via the soleplate 74 with the second Area 78, the wheel device and the further wheel device 36 are supported on the floor 18.
  • FIG. 3 shows the floor nozzle device 12 according to FIG. 2 with the soleplate removed.
  • the floor nozzle device 12 has a suction connection 80 (see, for example, FIG. 2), via which a suction flow of the suction fan device 16 can be coupled into the floor nozzle device 12 .
  • a suction hose 82 is coupled to the suction connection 80 .
  • the suction hose 82 leads from the suction connection 80 to the device body 14 and provides a fluidic connection to the suction fan device 16 for the application of suction flow to the suction connection 80 .
  • the suction port 80 includes an opening 84 through which a suction flow can flow accordingly.
  • the opening 84 has a round or oval cross-sectional shape.
  • the opening 84 of the suction port 80 is oriented transverse and, for example, perpendicular to the underside 54 and bottom side 56 of the body 20, respectively.
  • a mouth normal 86 of the opening 84 is oriented parallel to the direction 42 or perpendicular to the axis of rotation 50 or perpendicular to the width direction 24 .
  • a suction connection is generally understood here as a coupling connection for a suction flow into the floor nozzle device 12 . It does not necessarily have to be a connection or flange to which a hose or pipe can be connected, for example.
  • the suction connection 12 can also be formed in one piece on a corresponding suction pipe or suction hose.
  • the suction connection 80 is formed on a pipe socket 88 to which the suction hose 82 is connected in particular in a detachable manner.
  • the suction connection 80 faces away from the front face 22 and is located in particular on a rear side 90 of the body 20 between the first wheel 32 and the second wheel 34. This provides the appropriate space for a suction hose 82 in the intermediate space between the first wheel 32 and the second wheel 34 to the device body 14.
  • a channel means 92 is provided which is positioned on the body 20 and provides fluid communication between the suction port 80 (and the receiving space 46 (between the opening 84 and the receiving space 46)) such that debris passes through the channel means 92 can be sucked off; through the channel device 92, the receiving space 46 is subjected to the prod by the suction fan device 16 th suction flow.
  • the channel device 92 is designed in such a way that there is low flow resistance and a flow profile that is as homogeneous as possible when it is sucked into the receiving space 46 .
  • the receiving space 46 forms a suction channel which extends in the width direction Rich 24 and in which the cleaning roller 48 is positioned.
  • This suction channel/receiving space 46 is in operation of the floor nozzle device 12 correspondingly subjected to a suction flow via the suction flow, which is coupled in via the channel device 92 .
  • the channel device 92 is also preferably arranged and designed in such a way that during operation of the floor nozzle device 12 with a rotating cleaning roller 48 , dirt carried along by the cleaning roller 48 can to a certain extent be thrown into the channel device 92 .
  • the channel device 92 opens into the receiving space 46 (the suction channel) with a mouth 94 (compare FIG. 4).
  • the mouth 94 is located in a height direction 96 in particular, which is perpendicular to the width direction 24/the axis of rotation 50 and perpendicular to the bottom side 56, above the sliding soleplate 74 and in particular directly above the second region 78 of the sliding soleplate 74.
  • the mouth 94 is spaced from the underside 54 or bottom side 56 of the body 20.
  • a direction of rotation 98 of the cleaning roller 48 for the rotation about the axis of rotation 50 is such that a region which rests on the floor 18 rotates the shortest way towards the mouth 94 .
  • the direction of rotation 98 is counterclockwise.
  • the direction of rotation 98 is counterclockwise.
  • a guide element 100 is arranged on the receiving chamber 44 in the area of the underside 54 (see FIG. 4), which is oriented in the manner of an inclined plane to the bottom side 56 and which is aligned with the mouth 94 of the channel device 92 .
  • the guide element 100 limits the Opening 58 of the receiving space 46 to the bottom side 56. It serves to support the coupling of dirt into the channel device 92 at its mouth 94.
  • the mouth 94 of the channel device 92 in the receiving space 46 has a mouth normal 102 which is perpendicular to the width direction 24 (perpendicular to the axis of rotation 50).
  • the orifice normal 102 is parallel to the bottom side 56 or paral lel to the bottom 18 if the bottom is flat and the bottom nozzle device 12 is set up properly on the bottom 18 .
  • the mouth 94 is slot-shaped and extends in the width direction 24.
  • the mouth 24 has a bottom 104 and a top 106 (see Figure 4).
  • the underside 104 faces the bottom side 56 .
  • the mouth 94 has a width bi.
  • the receiving space 46 has a width b2 in the width direction 24 .
  • the width bi is at least 30%, preferably at least 50%, preferably at least 70%, preferably at least 80% and preferably at least 90% of the width b2.
  • the suction channel (of the receiving space 46) is sucked off over the largest part of the receiving space 46.
  • the width bi of the orifice 94 is at least twice and preferably three times the width b3 of the opening 84 on the suction connection 80.
  • the width bi is preferably at least four times and in particular at least five times the width b3.
  • the channel means 92 is funnel-shaped in the width direction 24 only.
  • a cross-sectional height h between a lower channel wall 110a and an upper channel wall 110b increases continuously from the mouth 94 to the opening 84.
  • the duct device 92 comprises the lower duct wall 110a and the upper duct wall 110b as the duct wall, between which the lateral duct walls 108a, 108b lie. Formed between these channel walls 108a, 108b, 110a, 110b is an interior space 112 of the channel device 92 through which the suction flow can flow.
  • the channel device 92 is arranged obliquely on the body 20 in such a way that the lower channel wall 110a, at least at the transition to the mouth 94, has no horizontal area on which dirt could possibly deposit.
  • the channel device 92 is arranged on the body 20 such that a distance from the channel device 92 in the height direction 96 to the bottom side 56 (to the underside 54) increases, starting from the mouth 94 towards the opening 84 (see FIG. 4).
  • the mouth 94 has a height H between the bottom 104 and the top 106, the height H being measured in the height direction 96.
  • the width bi in the width direction 24 is at least twice and in particular at least three times greater and in particular at least five times greater and in particular at least ten times greater than the (maximum) height H of the mouth 94.
  • the height H is in particular in the range between 5 mm and 15 mm or in the range between 2 mm and 15 mm if any coarse dirt removal devices (see below) are not taken into account.
  • the channel device 92 is designed in such a way that a cross-sectional area of the channel device 92 is continuously reduced from the mouth 94 to the opening 84
  • channel means 92 is integrally formed and fixed to body 20, for example.
  • the flow area 114 is used to adjust the flow ratios.
  • the flow area 114 is an area which blocks the flow passage in the inner space 112 of the channel device 92 and must be flowed around accordingly.
  • the flow area 114 is formed in particular via a recess 116 on the channel device 92, this recess being delimited by a wall 118 running around it.
  • a passage through the channel means 92 is provided by the recess 116 (compare Figure 5).
  • a fastening point 122 for the sliding sole 74 on the body 20 is provided via this passage 120 .
  • the flow area 114 has a heart shape. It lies on the median plane 66 and has a pointed edge 124 which faces the mouth 94 .
  • the flow area 114 is not symmetrical to the center plane 66.
  • the ductwork 92 as a whole is not symmetrical about the center plane 66 (see Figure 3). It is reduced in the area of the first half part 68 in comparison to the area of the first half part 70 in order to provide a corresponding space 126 (compare FIG. 3) for the positioning of the drive motor 64 .
  • the flow area 114 is designed in such a way that, based on a Reynolds number of 2300, it has a flow resistance coefficient cw which is less than or equal to 3.
  • FIG. 7-9 An embodiment of a channel means 92' is shown in Figures 7-9.
  • This channel device 92' is a variant of the channel device 92 according to Figures 2 to 6.
  • the channel device 92' is designed in one piece and in particular is designed in one piece. This results in simple assembly and fastening in the manufacture of the floor nozzle device 12. However, it is also possible for the corresponding channel device 92 or 92' to be designed in several parts and for example to be assembled using two half-shells.
  • the channel device 92' can be arranged on the floor nozzle device 12 instead of the channel device 92.
  • the channel means 92 ' has a lower channel wall 128 and an opposite upper channel wall 130 on. It is delimited by lateral channel walls 132a, 132b.
  • the channel device 92' comprises an orifice 134 and a suction connection 136. In this context, it is basically designed in the same way as the channel device 92 described above.
  • the suction connection 136 is formed on a pipe socket 138, for example.
  • the channel device 92' comprises a drop-shaped flow area 140, which is formed by a recess.
  • the duct 92' has a median plane 142 transverse to a width direction 24 (the same reference numeral is used here as for the duct 92).
  • the channel device 92' is embodied symmetrically to the center plane 142 and the flow area 140 lies on the center plane 142 and is arranged and designed symmetrically thereto.
  • the channel device 92 ′ has a first coarse dirt removal device 144 and a second coarse dirt removal device 146 . These are arranged symmetrically to the center plane 142 .
  • the opening 134 has an increased height in a height direction 96 perpendicular to the width direction 24 at the first coarse dirt removal device 144 and the second coarse dirt removal device 146 .
  • the first coarse dirt removal device 144 and the second coarse dirt removal device 146 are formed by corresponding recesses 148 on the upper channel wall 130 .
  • the recesses 148 are formed by rounded wall areas 150 projecting outwards.
  • channel-shaped cross-sectional area enlargement areas 152 are formed in the area of the coarse dirt removal devices 144, 146.
  • the coarse dirt removal devices 144, 146 are designed as discrete areas on the channel device 92', with a cross-sectional area enlargement being achieved locally for coarse dirt removal, which leads to the mouth 134. In this way, a homogeneous flow profile is achieved over the entire suction channel width (an entire width of the receiving space 46), with larger particles being discharged via the coarse dirt removal device 144, 146.
  • a height 154 of the mouth 134 at a coarse dirt removal device 144 or 146 is in the range between 5 mm and 30 mm.
  • a height 156 of the mouth 134 outside a coarse dirt removal device 144, 146 and in particular next to such a device is in the range between 5 mm and 15 mm, with the coarse dirt removal device 144, 146 being provided, the height 154 being greater than the height 156.
  • the channel device 92 ′ has a first area 158 and a second area 160 which adjoins the first area 158 towards the center plane 142 .
  • the first area 158 is a peripheral area which is laterally bounded by the respective lateral channel walls 132a, 132b.
  • a height 162 of the mouth 134 and also of the channel device 92' in the first area 158 is smaller than in the second area 160.
  • the height 162 in the first region 158 ranges between 2 mm and 8 mm.
  • the height 156 in the second region 160 is in the range between 5 mm and 15 mm, with the height 156 being greater than the height 162.
  • first area 158 and the second area 160 makes it possible to achieve better homogenization of the flow profile, in particular with widths b2 of the receiving space 46 from approximately 400 mm.
  • width b2 is less than 400 mm, for example 300 mm, then no step corresponding to the first portion 158 and the second portion 160 is provided.
  • steps or recesses 148 are formed on the upper channel wall 130 and thereby exclusively on the upper channel wall 130 .
  • the orifice 134 has an underside 164 which abuts the lower duct wall 128 . It has an opposite top surface 166 which abuts the upper channel wall 130 .
  • the underside 164 has a rectilinear course. Recesses 148 and steps for the transition from the first area 158 to the second area 160 are located on the upper side 166. This results in a simplified ability to position and also to manufacture the channel device 92'.
  • a plurality of flow areas can also be provided.
  • a mouth 170 and a suction port 172 with a corresponding opening are provided.
  • One or more flow areas 174 lie between the suction port 172 and the mouth 170; they are spaced from the mouth 170 and are spaced from the suction port 172.
  • a flow area 174 can be formed symmetrically or asymmetrically to a central plane 176, which is perpendicular to a width direction 24, and/or can be arranged symmetrically or asymmetrically.
  • a central flow area 174 is provided, which has a geometric center 178 .
  • this geometric center point 178 lies on the center plane 176. However, it can also be at a distance from this center plane 176.
  • the flow area 174 has a (hollow) egg shape.
  • the flow area in an interior of the channel device 168 has no edge, but is rounded off.
  • the flow area 174 forms a blocking surface for a flow. It is provided in particular that this blocking area A2 (compare FIG. 10) forms at most 90% of a total cross-sectional area of the channel device 168, the total cross-sectional area being Ai+A2+A3 according to FIG.
  • the areas Ai and A 3 are the areas which are left free to a certain extent by the flow area 174 and through which flow to the suction connection 172 is possible.
  • FIGS. 1-10 Different examples of flow areas 200 which are provided with edges are shown in FIGS.
  • the corresponding flow area 200 is triangular. It lies on a corresponding median plane 202 and is symmetrical to it.
  • the flow area 200 has corners or edges at corresponding triangle points.
  • FIG. 13 A variant of the design according to FIG. 13 is shown in FIG. A portion of it can be on the center plane 202 or it can be completely next to the center plane 202 .
  • FIG. 15 shows a further exemplary embodiment of a flow area which lies on a central plane 202 and is symmetrical to this. This flow area has corners or edges on the center plane 202 . Outside of the center plane 202, the flow area is edge-free.
  • FIG. 16 shows a variant of the embodiment according to FIG. It can also be oriented closer to the mouth, for example.
  • FIG. 17 shows a flow area which is rhombic and lies on a central plane 202 and is symmetrical to the central plane 202 .
  • a variant is shown in FIG. 18 which, in comparison to the embodiment according to FIG. This flow area is diamond-shaped.
  • the flow area is selected so that the flow conditions are optimized for the relevant application (for example, taking into account the geometric dimensions of the floor nozzle device).
  • a channel device 92 , 92 ′, 168 is provided on a floor nozzle device 12 , which is in connection with the receiving space 46 (the suction channel) and the suction connection 80 .
  • This is designed in such a way that with a low flow resistance, a homogenized flow profile results at the intake port. This results in effective suction.
  • a cross-sectional area decreases continuously from the mouth to the suction port.
  • the channel device 92, 92', 168 is funnel-shaped with respect to the width direction 24, resulting in a reduction in width towards the suction connection, starting from the mouth.
  • an opening into the receiving space 46 is designed in the form of a slot.
  • an opening into the receiving space 46 is designed in the form of a slot.
  • Coarse dirt removal devices 144, 146 can effectively remove coarse dirt (such as pebbles) even if the opening is slot-shaped.
  • a targeted influencing of the flow can be achieved in order to obtain a homogeneous flow profile on the suction channel (the receiving space 46), particularly with low flow resistance.
  • the channel means 92, 92', 168 have been described above in connection with use in a vacuum cleaner configured as a carpet brush vacuum cleaner. In principle, they can also be used, for example, on floor nozzle devices for a wet/dry vacuum cleaner.
  • a further exemplary embodiment of a vacuum cleaning device according to the invention which can be provided with a corresponding channel device, is a vacuum cleaning device 180 (FIGS. 11, 12), is a self-propelled and self-steering vacuum cleaning device (cleaning robot).
  • a floor nozzle device is integrated.
  • the corresponding floor nozzle device 182 includes a cleaning roller 183 which is positioned in a receiving space 186 of a receiving chamber 188 in a rotatable manner.
  • the cleaning roller 183 is positioned between opposite wheels 188 .
  • a suction fan device 190 is provided, which generates a corresponding suction flow.
  • suction material container 192 which is seated detachably on a body 194 .
  • a channel device 196 which is designed in principle as described above.
  • a suction connection 198 is provided, which is connected, for example, to an interior of the suction material container 192 .
  • An opening is provided, with which the channel device 196 opens into the receiving space 184 and to the suction connection 198.
  • the mouth is slit-shaped and the suction port has an opening which is circular or oval. There is a continuous cross-sectional enlargement from the mouth to the suction port 198.
  • the channel device 196 is funnel-shaped in a width direction with a width at the mouth which is considerably larger than a width of the opening of the suction port. A height of the mouth is significantly smaller than a height of the opening at the suction port.
  • the channel device 196 basically functions in the same way as described above with reference to the channel device 92, 92', 168 and basically corresponds in structure to the channel devices described above.
  • Vacuum cleaning device (first exemplary embodiment)
  • Floor nozzle device Device body Suction fan device Floor Body Front end face Width direction First transverse side Second transverse side Wheel device First wheel Second wheel Further wheel device First wheel Second wheel Direction of receiving chamber Recording space Cleaning roller Rotation axis Bristle trimmings Underside Floor side Opening Pivot bearing a First bearing part b Second bearing part Drive motor center plane First half part Second half part Torque transmission device Sliding sole First area Second area Suction connection Suction hose Opening Orifice normal Pipe socket Clean side Channel device ' Channel device Orifice Height direction Rotation direction 0 Guide element 2 Orifice normal 4 Underside 6 Upper side 8a Lateral duct wall 8b Lateral duct wall 0a Lower duct wall 0b Upper duct wall 2 Interior 4 Flow area 6 Recess 8 Circumferential end wall 0 passage 2 attachment point 4

Landscapes

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

Abstract

L'invention concerne un appareil de buse pour sol, comprenant : une chambre de réception (44) comportant un espace de réception (46), qui est ouvert sur un côté du sol (56) ; au moins un rouleau de nettoyage (48), qui est situé dans l'espace de réception (46) et qui peut tourner autour d'un axe de rotation (50) ; et un raccord d'aspiration (80), auquel est appliqué un courant d'aspiration pendant le fonctionnement de l'appareil à buse pour sol ; un dispositif de conduit en forme d'entonnoir (92) est situé entre l'espace de réception (46) et le raccord d'aspiration (80), lequel dispositif de conduit débouche au moyen d'une ouverture (94) dans l'espace de réception (46) et est relié au raccord d'aspiration (80) ou comprend le raccord d'aspiration (80) ; et l'ouverture (94) présente une largeur (b1) dans un sens de la largeur (24) parallèle à l'axe de rotation (50), ainsi qu'au moins l'un des éléments suivants : la largeur (b1) de l'ouverture (94) est au moins 50% d'une largeur (b2) de l'espace de réception dans le sens de la largeur (24) ; la largeur (b1) de l'ouverture (94) est au moins trois fois une largeur (b3) d'une ouverture (84) du raccord d'aspiration (80) dans le sens de la largeur (24).
EP21728496.7A 2021-05-19 2021-05-19 Appareil de buse pour sol et dispositif de nettoyage par aspiration Pending EP4340689A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2021/063329 WO2022242851A1 (fr) 2021-05-19 2021-05-19 Appareil de buse pour sol et dispositif de nettoyage par aspiration

Publications (1)

Publication Number Publication Date
EP4340689A1 true EP4340689A1 (fr) 2024-03-27

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ID=76181100

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Application Number Title Priority Date Filing Date
EP21728496.7A Pending EP4340689A1 (fr) 2021-05-19 2021-05-19 Appareil de buse pour sol et dispositif de nettoyage par aspiration

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Country Link
US (1) US20240081589A1 (fr)
EP (1) EP4340689A1 (fr)
CN (1) CN117320607A (fr)
WO (1) WO2022242851A1 (fr)

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE538356C (de) * 1930-04-06 1931-11-13 Mauz & Pfeiffer Staubsauger mit innerhalb der Saugduese drehbarem Schlagkoerper
US4315344A (en) 1980-08-15 1982-02-16 Robert E. Robbins Vacuum cleaner with improved compressed air means
US5184372A (en) 1991-01-07 1993-02-09 Mache Gerhard R Vacuum assisted squeegee attachment
RU2072398C1 (ru) 1991-05-16 1997-01-27 Акционерное общество открытого типа Всероссийский алюминиево-магниевый институт Боковая футеровка алюминиевого электролизера
DE4304682C2 (de) 1993-02-16 1996-01-25 Wessel Werk Gmbh Staubsaugerdüse
JPH09276183A (ja) 1996-04-10 1997-10-28 Matsushita Electric Ind Co Ltd 電気掃除機
EP0836826B1 (fr) 1996-10-21 2006-11-22 VORWERK & CO. INTERHOLDING GmbH Embout pour appareil aspirant destiné au nettoyage par voie humide de surfaces
US6505379B2 (en) 1998-03-16 2003-01-14 Kris D. Keller Heated vacuum carpet cleaning and drying apparatus
KR100565262B1 (ko) 2004-10-27 2006-03-30 엘지전자 주식회사 건습식 복합형 업라이트 청소기
DE102005061646A1 (de) * 2005-12-22 2007-06-28 Vorwerk & Co. Interholding Gmbh Verfahren zum Betreiben einer Bodendüse, sowie Bodendüse für einen Staubsauger
US8312594B2 (en) 2008-06-27 2012-11-20 Nilfisk-Advance, Inc. Carpet cleaning wand having uniform air flow distribution
GB2496340B (en) 2010-09-01 2015-07-15 Techtronic Floor Care Tech Ltd Tank tray for an extractor cleaning machine
US9320402B2 (en) 2011-09-02 2016-04-26 Techtronic Floor Care Technology Limited Supply tank for an extractor cleaning machine
DE202013012335U1 (de) 2013-12-09 2016-05-04 Carl Freudenberg Kg Saugdüse
US9138119B1 (en) 2014-03-13 2015-09-22 Techtronic Industries Co. Ltd. Air duct for an extractor cleaning machine
DE102015100699A1 (de) * 2015-01-19 2016-07-21 Vorwerk & Co. Interholding Gmbh Bürstenwalze
DE102015105415B4 (de) 2015-04-09 2022-05-05 Wessel-Werk Gmbh Bodendüse für Staubsauger
WO2016173859A2 (fr) 2015-04-30 2016-11-03 Marianne Zippel Unité d'aspiration et installation d'aspiration comprenant une telle unité d'aspiration
DE102015108157A1 (de) 2015-05-22 2016-11-24 Vorwerk & Co. Interholding Gmbh Saugdüse für einen Staubsauger
DE102015109838A1 (de) 2015-06-19 2016-12-22 Vorwerk & Co. Interholding Gmbh Saugdüse für einen Staubsauger
DE102018102028A1 (de) * 2018-01-30 2019-08-01 Vorwerk & Co. Interholding Gmbh Saugdüse für einen Staubsauger zum Reinigen eines Teppichs
CN109953689B (zh) * 2018-07-11 2021-09-07 尚科宁家（香港）股份有限公司 一种清洁头

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US20240081589A1 (en) 2024-03-14
WO2022242851A1 (fr) 2022-11-24
CN117320607A (zh) 2023-12-29

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