EP3097836B1 - Liquid suction device - Google Patents

Liquid suction device Download PDF

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Publication number
EP3097836B1
EP3097836B1 EP16171078.5A EP16171078A EP3097836B1 EP 3097836 B1 EP3097836 B1 EP 3097836B1 EP 16171078 A EP16171078 A EP 16171078A EP 3097836 B1 EP3097836 B1 EP 3097836B1
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EP
European Patent Office
Prior art keywords
suction
liquid
aperture
fan
gap
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
EP16171078.5A
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German (de)
French (fr)
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EP3097836A1 (en
Inventor
Jenny Scheffel
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.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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Publication of EP3097836A1 publication Critical patent/EP3097836A1/en
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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
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum 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
    • A47L1/00—Cleaning windows
    • A47L1/02—Power-driven machines or devices
    • A47L1/05—Hand apparatus with built-in electric motors
    • 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
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • 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
    • A47L11/34—Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
    • 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
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0009—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid

Definitions

  • the invention relates to a liquid suction device, in particular for sucking liquid from a hard bottom surface and / or a window surface, which remplisstechniksssaug drove a suction head with a limited by two lips suction gap, a dirty liquid tank and a suction fan, wherein the suction gap, the dirty liquid tank and the suction fan by means of a Suction channels are interconnected so that liquid from a surface to be cleaned via the suction gap in the dirty liquid tank is sucked.
  • Liquid suction devices of the aforementioned type are well known in the art. These are often used in combination with a cleaning element within a wet cleaning device, which first applies liquid to the surface to be cleaned by means of a liquid application device, performs a treatment of the surface with the cleaning element and then sucks the excess liquid from the surface by means of the liquid suction device.
  • a wet cleaning device with a liquid suction device describes, for example, the document EP 1611 830 A2 .
  • the liquid suction device described there has a suction head with two flexible lips, which are arranged in the usual direction of movement of the wet cleaning device in front of and behind the suction gap.
  • a suction fan acts on a dirty liquid tank with negative pressure, so that dirt-laden liquid can be conveyed from the surface to be cleaned via a suction channel into the dirty liquid tank.
  • a disadvantage of this liquid suction device is that the suction head leaves traces of liquid on the surface to be cleaned, in particular at the gap end regions of the suction gap, since the gap end regions interact less strongly Vacuum be acted as the suction channel closer to the gap center of the suction gap.
  • Another example of a liquid suction device is in WO2014 / 121529 disclosed. It is therefore an object of the invention to provide a liquid suction device which leaves no traces of liquid, such as drops or streaks, on the surface to be cleaned.
  • the liquid suction device has an air duct, which is connected on the one hand to a pressure side of a blower, in particular to the pressure side of the suction blower remote from the suction duct, and on the other hand to the suction gap, so that the blower, in particular the suction blower, generated blown air can be conveyed into the suction gap.
  • the suction of the liquid is assisted by the blowing of blown air into the suction gap.
  • the blower used for this purpose can be either the suction fan of the liquid suction device, with which the suction head is subjected to negative pressure, or an additional fan.
  • blower liquid drops which depend on the lips of the suction gap, conveyed from the outside into the suction gap, so that they do not drip from the suction head when lifting the suction head of the surface to be cleaned, but rather promoted in the suction channel and thus in the dirty liquid tank become.
  • the retention of drops and / or streaks on the cleaned surface is thus prevented or at least reduced.
  • the blast air can be blown in principle from different directions and at different positions in the suction gap, in particular a one- or two-sided loading of the gap end regions of the suction gap with blast air is suitable.
  • the air duct has two partial air ducts which are connected in parallel in the flow direction and which are each connected to a gap end region of the suction gap, so that blown air generated by the blower, in particular the suction blower, moves the suction gap from the gap end regions in the direction of one between the gap end regions trained gap center.
  • the two gap end regions of the suction gap i. the lateral free end portions of the suction gap, equally impacted from outside to inside with blowing air, so that in particular attached to the Spaltend Schemeen liquid droplets are conveyed in the direction of the nip of the suction gap and form when lifting the suction head of the surface to be cleaned no traces of liquid dripping through Spaltend Schemee.
  • the suction gap Due to the separate partial air channels, the suction gap is additionally subjected to blowing air symmetrically from both gap end regions, so that dripping over the entire length of the suction gap is prevented.
  • the partial air channels are connected to the outwardly facing end faces of the gap end regions, based on a connection from the gap center to the gap end regions.
  • the blown air of the blower is blown into the suction gap through the lateral end faces of the gap end portions, i. in a direction which corresponds to the longitudinal extension of the suction gap.
  • the flow direction of the blowing air is substantially perpendicular to the surface to be cleaned with negative pressure acting suction air, which sucks liquid into the suction channel.
  • the liquid is deflected away from the lateral end portions of the suction gap and directed into the suction head.
  • the suction channel is connected to the suction gap in the region of the gap center.
  • a suction-side end region of the suction channel is advantageously located in the region of the suction head, in which conveyed away from the end portions of the suction gap liquid is conveyed. The conveyed by means of the blown air liquid can thus be optimally sucked into the suction channel and get into the dirty liquid tank.
  • the suction head and the suction channel are connected to each other by means of a rotary joint and are pivotable relative to each other. Due to the pivotability of the suction head relative to the suction channel, the suction head remains at different inclinations of sosstechniksssaug worn (and thus the suction channel) relative to the surface to be cleaned at advantageously constant angle of the inlet opening of the suction gap to the surface to be cleaned in contact with the surface to be cleaned , If a user holds the liquid suction device relative to the surface to be cleaned with a larger angle, the suction head is pivoted relative to the suction channel so that the suction gap continues to maintain substantially the previous angle to the surface, so that the liquid is still optimal in the dirty liquid tank can be sucked.
  • the hinge is associated with a spring whose restoring force always presses the suction head against the surface to be cleaned, so that an optimal suction of the liquid suction is ensured.
  • the rotary joint can have an axis of rotation which is designed as a hollow cylinder connected in a rotationally fixed manner to an end region of the suction channel.
  • rotatable channel extensions can advantageously be arranged relative to the hollow cylinder, which are rotatably connected to the suction head.
  • the wet cleaning device according to the invention may be, for example, a hard surface cleaning device or a window cleaning device.
  • a cleaning element a cleaning roller, a cleaning cloth or the like may be provided.
  • the cleaning element and / or the surface to be cleaned is acted upon by a liquid for the purpose of a cleaning operation by the liquid application device.
  • the liquid present on the surface is conveyed into the dirty liquid tank by means of the blower, in particular the suction blower, of the wet cleaning device.
  • the wet cleaning device on the suction head which is advantageously arranged downstream of the cleaning element in the direction of movement of the wet cleaning device.
  • the suction head advantageously has flexible lips, of which at least one sealingly sweeps across the surface and thereby collects liquid in the region of the suction gap. This liquid is then sucked by the vacuum generated by the suction fan through the suction channel into the dirty liquid tank. In addition, the suction gap is acted upon by the blown air of the suction fan, so that the liquid is additionally blown from the outside into the suction gap. In this way, the suction of the liquid can be supported in the suction head, so that when lifting the suction head of the surface no drops or streaks remain on the surface.
  • the liquid application device and the cleaning element are formed as a common, a liquid tank exhibiting surface-mounted element.
  • the surface attachment element itself may be formed as a liquid tank on which a cleaning element, preferably a cleaning cloth, is clamped, wherein between the liquid tank and the cleaning element perforation, nozzles or the like are provided so that a certain amount of liquid, in particular continuously, to the Cleaning element can be discharged.
  • This type of liquid application device does not require liquid lines from a separate liquid tank to the liquid application device or the cleaning element, so that this embodiment is particularly easy to manufacture and ensures reliable humidification of the cleaning element.
  • the suction head and the suction channel and / or the suction head and the cleaning element and / or the cleaning element and the suction channel by means of a rotary joint connected to each other and are pivotable relative to each other.
  • a rotary joint connected to each other and are pivotable relative to each other.
  • the suction gap of the suction head can advantageously maintain a constant angle to the surface, so that the suction of liquid from the surface works optimally regardless of the handling angle of the wet cleaning device.
  • the same applies to the cleaning element which should always advantageously have the same orientation to the surface to be cleaned, unless it is not a rotationally symmetrical cleaning element, such as a cleaning roller acts.
  • the cleaning element or the suction head is advantageously acted upon by the force of a spring.
  • This spring may be a worm spring, which is arranged between the suction head / the cleaning element and the suction channel.
  • the suction channel to a designed as a hollow cylinder axis of rotation on which the suction head and / or the cleaning element are mounted rotatably independently.
  • the hollow cylindrical axis of rotation in this case at the end channel extensions, which provide flow paths for connection to the suction head and thus also to the suction gap.
  • the blown into the suction gap and / or sucked air flow through the channel extensions in the hollow cylindrical axis of rotation and thus rotatably connected suction channel.
  • Due to the independent mobility of the suction head of the cleaning element also surface irregularities or height displacements may optionally be compensated, which would otherwise lead to a lifting of the cleaning element or the suction head of the surface.
  • the air duct has two partial air ducts which are connected in parallel in the flow direction and which are each connected to a gap end region of the suction gap, so that blown air generated by the blower, in particular the suction blower, reaches the suction gap starting from the gap end regions acted upon in the direction of a gap formed between the Spaltend Schemeen gap.
  • the air channel Starting from the pressure side of the blower, the air channel thus splits into two partial air channels, each of which acts on one of the Spaltend Schemee the suction gap with blowing air.
  • the Blas Kunststoffstrom which exits on the pressure side of the suction fan is advantageously collected in a funnel-shaped portion of the air duct and passed over the two partial air ducts from the outside between the two lips of the suction gap.
  • the partial air channels are connected to the outwardly facing end faces of the gap end regions, based on a connection from the middle of the gap to the gap end regions.
  • the blown air acts on the suction gap along its longitudinal extent from outside to inside, i. towards the center of the gap.
  • liquid droplets located at the gap end regions are blown in the direction of the center of the gap so that they can easily reach the suction channel and no longer drip off the surface to be cleaned when the suction head lifts up.
  • the suction channel is connected to the suction gap in the region of the gap center.
  • the liquid drops which are located at the gap end regions of the suction gap, are conveyed in the direction of the vacuum-loaded suction channel, so that they can be sucked into the dirty liquid tank in a particularly simple manner. This supports the promotion of the liquid at the suction gap from outside to inside.
  • the invention also relates to a method for aspirating liquid from a surface to be cleaned, in particular a hard bottom surface and / or a window surface, by means of a liquid suction device, the a suction head having a suction gap delimited by two lips, a dirty fluid tank and a suction fan, wherein liquid is sucked by the suction fan via the suction gap in the dirty liquid tank, characterized in that the suction gap, in particular one or both Spaltend Schemee the suction gap during the suction of the liquid with blown air of a blower, in particular blowing air of the suction fan, is applied to promote the liquid in the suction head.
  • a wet cleaning device 13 designed here as a hand-held window cleaning device having a liquid suction device 1 and a cleaning element 14 and a liquid applicator 15.
  • the cleaning element 14 and the liquid application device 15 are formed as a common surface-mounted element having a liquid tank.
  • the liquid tank has on the side facing the surface to be cleaned, the cleaning element 14, here formed as a cleaning cloth on.
  • the liquid application device 15 and the cleaning element 14 are connected to one another by perforating the wall of the liquid application device 15 such that liquid is continuously discharged from the tank of the liquid application device 15 to the cleaning element 14 and is thus available for cleaning on the surface to be cleaned.
  • the liquid suction device 1 of the wet cleaning device 13 has a suction head 2, which is designed here as a flat, double-walled element, between the walls of liquid can be performed.
  • the suction head 2 On the side pointing in the direction of the surface to be cleaned, the suction head 2 has two lips 3, which form a straight suction gap 4 whose longitudinal extension is perpendicular to a normal direction of movement of the wet cleaning device 13.
  • the suction head 2 is connected via a rotary joint 12 to a suction channel 7, through which liquid can flow from the suction gap 4 to a suction fan 6.
  • a dirty liquid tank 5 is arranged, which receives the absorbed by the surface to be cleaned liquid.
  • the arranged between the suction channel 7 and the suction head 2 pivot 12 has an axis of rotation 19 which is formed as a parallel to the longitudinal extent of the suction gap 4 extending hollow cylinder.
  • the suction head 2 is rotatably mounted on the axis of rotation 19 of the rotary joint 12 via end mounted on the axis of rotation 19, wherein an associated spring 18 presses the suction head 2 against the surface to be cleaned and thus independent of the angular position of the wet cleaning device 13 to be cleaned Surface ensures contact between the surface and the suction gap 4 of the suction head 2.
  • the channel extensions 20 connect the suction head 2, regardless of its angular position to the surface to be cleaned fluidly with the axis of rotation 19 and the suction channel. 7
  • an air channel 8 is arranged, through which the blower air leaving the suction fan 6 is conveyed to the suction gap 4 of the suction head 2.
  • the air duct 8 is divided into two partial air ducts 9 connected in parallel, of which each partial air duct 9 inflates a gap end region 10 of the suction gap 4, so that the blown air is conveyed from both gap end regions 10 symmetrically in the direction of the gap center 11 of the suction gap 4.
  • liquid present at the gap end regions 10 is always blown into the suction head 2, so that liquid accumulations can not occur in this region.
  • the housing of the wet cleaning device 13 also has in the usual way a switch 16 for switching on or off of the wet cleaning device 13, and a handle 17 to which a user of the wet cleaning device 13 this can lead during a cleaning process.
  • the dirty liquid tank 5 is removably disposed in the wet cleaning apparatus 13, so that the liquid contained therein can be removed.
  • the dirty liquid tank 5 has an opening through which a pouring of the liquid is possible.
  • the liquid application device 15 may have an opening for filling with and pouring liquid.
  • the invention now works so that the user fills the tank of the liquid applicator 15 with liquid. He then turns on the suction fan 6 by means of the switch 16. During the subsequent cleaning operation, the user guides the wet cleaning device 13 over the surface to be cleaned, whereby liquid is discharged from the tank of the liquid application device 15 onto the cleaning element 14. The liquid passes through the cleaning element 14, here the cleaning cloth, on the surface to be cleaned and dissolves due to the traversing movement of the wet cleaning device 13 dirt from the surface to be cleaned.
  • the suction gap 4 comes into contact with the liquid lying on the cleaned surface, so that the liquid flows into the suction head 2 due to the negative pressure prevailing at the suction gap 4 sucked can be.
  • blowing air flows from the pressure side of the suction fan 6 through the partial air channels 9 to the suction gap 4.
  • the gap end regions 10 of the suction gap 4 is supplied with the blowing air, so that the liquid present in the suction gap 4 is conveyed from outside to inside, ie from the gap end regions 10 to the gap center 11.
  • the angular position of the suction head 2 to the suction channel 7 can be changed.
  • the suction head 2 and the liquid applicator 15 is rotatably mounted on the rotation axis 19, so that the liquid applicator 15 rests independently of the angular position of the wet cleaning device 13 on the surface to be cleaned. If the surface to be cleaned has unevenness or height offsets, both the liquid application device 15 and the suction head 2 can rotate independently about the axis of rotation 19, so that both optimally stand up on the surface.
  • the user switches off the wet cleaning device 13 by means of the switch 16. Then he can also remove the sucked from the surface liquid from the dirty liquid tank 5 and optionally pour excess liquid from the liquid applicator 15.
  • suction gap 4 was acted upon in the illustrated embodiment by means of the suction fan 6 with blowing air, it is also possible to use an additional fan for this purpose.

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  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Description

Die Erfindung betrifft eine Flüssigkeitssaugeinrichtung, insbesondere zum Absaugen von Flüssigkeit von einer Hartbodenfläche und/oder einer Fensterfläche, welche Flüssigkeitssaugeinrichtung einen Saugkopf mit einem von zwei Lippen begrenzten Saugspalt, einen Schmutzflüssigkeitstank sowie ein Sauggebläse aufweist, wobei der Saugspalt, der Schmutzflüssigkeitstank und das Sauggebläse mittels eines Saugkanals so miteinander verbunden sind, dass Flüssigkeit von einer zu reinigenden Fläche via des Saugspalts in den Schmutzflüssigkeitstank saugbar ist.The invention relates to a liquid suction device, in particular for sucking liquid from a hard bottom surface and / or a window surface, which Flüssigkeitsssaugeinrichtung a suction head with a limited by two lips suction gap, a dirty liquid tank and a suction fan, wherein the suction gap, the dirty liquid tank and the suction fan by means of a Suction channels are interconnected so that liquid from a surface to be cleaned via the suction gap in the dirty liquid tank is sucked.

Flüssigkeitssaugeinrichtungen der vorgenannten Art sind im Stand der Technik hinreichend bekannt. Diese werden häufig in Kombination mit einem Reinigungselement innerhalb eines Feuchtreinigungsgerätes verwendet, welches zunächst mittels einer Flüssigkeitsauftragseinrichtung Flüssigkeit auf die zu reinigende Fläche aufträgt, mit dem Reinigungselement eine Bearbeitung der Fläche durchführt und anschließend die überschüssige Flüssigkeit mittels der Flüssigkeitssaugeinrichtung von der Fläche absaugt. Ein solches Feuchtreinigungsgerät mit einer Flüssigkeitssaugeinrichtung beschreibt beispielsweise die Druckschrift EP 1611 830 A2 . Die dort beschriebene Flüssigkeitssaugeinrichtung weist einen Saugkopf mit zwei flexiblen Lippen auf, welche in üblicher Bewegungsrichtung des Feuchtreinigungsgerätes vor und hinter dem Saugspalt angeordnet sind. Ein Sauggebläse beaufschlagt einen Schmutzflüssigkeitstank mit Unterdruck, so dass schmutzbeladene Flüssigkeit von der zu reinigenden Fläche via eines Saugkanals in den Schmutzflüssigkeitstank gefördert werden kann.Liquid suction devices of the aforementioned type are well known in the art. These are often used in combination with a cleaning element within a wet cleaning device, which first applies liquid to the surface to be cleaned by means of a liquid application device, performs a treatment of the surface with the cleaning element and then sucks the excess liquid from the surface by means of the liquid suction device. Such a wet cleaning device with a liquid suction device describes, for example, the document EP 1611 830 A2 , The liquid suction device described there has a suction head with two flexible lips, which are arranged in the usual direction of movement of the wet cleaning device in front of and behind the suction gap. A suction fan acts on a dirty liquid tank with negative pressure, so that dirt-laden liquid can be conveyed from the surface to be cleaned via a suction channel into the dirty liquid tank.

Nachteilig bei dieser Flüssigkeitssaugeinrichtung ist, dass der Saugkopf Flüssigkeitsspuren auf der zu reinigenden Fläche hinterlässt, insbesondere an den Spaltendbereichen des Saugspaltes, da die Spaltendbereiche weniger stark mit Unterdruck beaufschlagt werden als die dem Saugkanal näher liegende Spaltmitte des Saugspaltes. Ein weiteres Beispiel einer Flüssigkeitssaugeinrichtung ist in der WO2014/121529 offenbart. Es ist daher Aufgabe der Erfindung, eine Flüssigkeitssaugeinrichtung zu schaffen, welche keine Flüssigkeitsspuren, beispielsweise Tropfen oder Streifen, auf der zu reinigenden Fläche hinterlässt.
Zur Lösung dieser Aufgabe wird vorgeschlagen, dass die Flüssigkeitssaugeinrichtung einen Luftkanal aufweist, welcher einerseits mit einer Druckseite eines Gebläses, insbesondere mit der dem Saugkanal abgewandten Druckseite des Sauggebläses, und andererseits mit dem Saugspalt verbunden ist, so dass von dem Gebläse, insbesondere dem Sauggebläse, erzeugte Blasluft in den Saugspalt förderbar ist.
Gemäß der Erfindung wird das Absaugen der Flüssigkeit durch das Einblasen von Blasluft in den Saugspalt unterstützt. Das dazu verwendete Gebläse kann entweder das Sauggebläse der Flüssigkeitssaugeinrichtung sein, mit welchem der Saugkopf mit Unterdruck beaufschlagt wird, oder ein zusätzliches Gebläse. Mittels des Gebläses werden Flüssigkeitstropfen, welche an den Lippen des Saugspaltes hängen, von außen in den Saugspalt gefördert, so dass diese beim Abheben des Saugkopfes von der zu reinigenden Fläche nicht von dem Saugkopf abtropfen, sondern vielmehr in den Saugkanal und somit in den Schmutzflüssigkeitstank gefördert werden. Das Zurückbleiben von Tropfen und/oder Streifen auf der gereinigten Fläche ist somit verhindert oder zumindest reduziert. Die Blasluft kann grundsätzlich aus unterschiedlichen Richtungen und an verschiedenen Positionen in Saugspalt eingeblasen werden, insbesondere eignet sich eine ein- oder beidseitige Beaufschlagung der Spaltendbereiche des Saugspaltes mit Blasluft.A disadvantage of this liquid suction device is that the suction head leaves traces of liquid on the surface to be cleaned, in particular at the gap end regions of the suction gap, since the gap end regions interact less strongly Vacuum be acted as the suction channel closer to the gap center of the suction gap. Another example of a liquid suction device is in WO2014 / 121529 disclosed. It is therefore an object of the invention to provide a liquid suction device which leaves no traces of liquid, such as drops or streaks, on the surface to be cleaned.
To solve this problem, it is proposed that the liquid suction device has an air duct, which is connected on the one hand to a pressure side of a blower, in particular to the pressure side of the suction blower remote from the suction duct, and on the other hand to the suction gap, so that the blower, in particular the suction blower, generated blown air can be conveyed into the suction gap.
According to the invention, the suction of the liquid is assisted by the blowing of blown air into the suction gap. The blower used for this purpose can be either the suction fan of the liquid suction device, with which the suction head is subjected to negative pressure, or an additional fan. By means of the blower liquid drops, which depend on the lips of the suction gap, conveyed from the outside into the suction gap, so that they do not drip from the suction head when lifting the suction head of the surface to be cleaned, but rather promoted in the suction channel and thus in the dirty liquid tank become. The retention of drops and / or streaks on the cleaned surface is thus prevented or at least reduced. The blast air can be blown in principle from different directions and at different positions in the suction gap, in particular a one- or two-sided loading of the gap end regions of the suction gap with blast air is suitable.

Des Weiteren wird vorgeschlagen, dass der Luftkanal zwei in Strömungsrichtung parallel geschaltete Teilluftkanäle aufweist, welche jeweils mit einem Spaltendbereich des Saugspaltes verbunden sind, so dass von dem Gebläse, insbesondere dem Sauggebläse, erzeugte Blasluft den Saugspalt ausgehend von den Spaltendbereichen in Richtung einer zwischen den Spaltendbereichen ausgebildeten Spaltmitte beaufschlagt. Dadurch werden die beiden Spaltendbereiche des Saugspaltes, d.h. die seitlichen freien Endbereiche des Saugspaltes, gleichermaßen von außen nach innen mit Blasluft beaufschlagt, so dass insbesondere an den Spaltendbereichen anhaftende Flüssigkeitstropfen in Richtung der Spaltmitte des Saugspaltes gefördert werden und sich beim Abheben des Saugkopfes von der zu reinigenden Fläche keine Flüssigkeitsspuren durch abtropfende Spaltendbereiche bilden. Der Saugspalt wird aufgrund der getrennten Teilluftkanäle zudem symmetrisch von beiden Spaltendbereichen her mit Blasluft beaufschlagt, so dass ein Abtropfen über die gesamte Länge des Saugspaltes verhindert ist.Furthermore, it is proposed that the air duct has two partial air ducts which are connected in parallel in the flow direction and which are each connected to a gap end region of the suction gap, so that blown air generated by the blower, in particular the suction blower, moves the suction gap from the gap end regions in the direction of one between the gap end regions trained gap center. Thereby, the two gap end regions of the suction gap, i. the lateral free end portions of the suction gap, equally impacted from outside to inside with blowing air, so that in particular attached to the Spaltendbereichen liquid droplets are conveyed in the direction of the nip of the suction gap and form when lifting the suction head of the surface to be cleaned no traces of liquid dripping through Spaltendbereiche. Due to the separate partial air channels, the suction gap is additionally subjected to blowing air symmetrically from both gap end regions, so that dripping over the entire length of the suction gap is prevented.

Des Weiteren wird vorgeschlagen, dass die Teilluftkanäle - bezogen auf eine Verbindung von der Spaltmitte zu den Spaltendbereichen - an die nach außen weisenden Stirnflächen der Spaltendbereiche angeschlossen sind. Gemäß dieser Ausgestaltung wird die Blasluft des Gebläses durch die seitlichen Stirnflächen der Spaltendbereiche in den Saugspalt eingeblasen, d.h. in eine Richtung, welche der Längserstreckung des Saugspaltes entspricht. Damit steht die Strömungsrichtung der Blasluft im Wesentlichen senkrecht zu der die zu reinigende Fläche mit Unterdruck beaufschlagenden Saugluft, welche Flüssigkeit in den Saugkanal saugt. Dadurch wird die Flüssigkeit von den seitlichen Endbereichen des Saugspaltes weggelenkt und in den Saugkopf hineingelenkt.Furthermore, it is proposed that the partial air channels are connected to the outwardly facing end faces of the gap end regions, based on a connection from the gap center to the gap end regions. According to this embodiment, the blown air of the blower is blown into the suction gap through the lateral end faces of the gap end portions, i. in a direction which corresponds to the longitudinal extension of the suction gap. Thus, the flow direction of the blowing air is substantially perpendicular to the surface to be cleaned with negative pressure acting suction air, which sucks liquid into the suction channel. As a result, the liquid is deflected away from the lateral end portions of the suction gap and directed into the suction head.

Des Weiteren wird vorgeschlagen, dass der Saugkanal im Bereich der Spaltmitte an den Saugspalt angeschlossen ist. Dadurch befindet sich ein saugseitiger Endbereich des Saugkanals vorteilhaft in dem Bereich des Saugkopfes, in welchen die von den Endbereichen des Saugspaltes weggeblasene Flüssigkeit gefördert wird. Die mittels der Blasluft geförderte Flüssigkeit kann somit optimal in den Saugkanal eingesaugt werden und in den Schmutzflüssigkeitstank gelangen.Furthermore, it is proposed that the suction channel is connected to the suction gap in the region of the gap center. As a result, a suction-side end region of the suction channel is advantageously located in the region of the suction head, in which conveyed away from the end portions of the suction gap liquid is conveyed. The conveyed by means of the blown air liquid can thus be optimally sucked into the suction channel and get into the dirty liquid tank.

Es wird des Weiteren vorgeschlagen, dass der Saugkopf und der Saugkanal mittels eines Drehgelenkes miteinander verbunden und relativ zueinander verschwenkbar sind. Durch die Verschwenkbarkeit des Saugkopfes relativ zu dem Saugkanal bleibt der Saugkopf auch bei unterschiedlichen Neigungen der Flüssigkeitssaugeinrichtung (und damit des Saugkanales) relativ zu der zu reinigenden Fläche unter vorteilhaft konstantem Winkel der Eintrittsöffnung des Saugspaltes zu der zu reinigenden Fläche in Kontakt mit der zu reinigenden Fläche. Sofern ein Nutzer die Flüssigkeitssaugeinrichtung relativ zu der zu reinigenden Fläche mit einem größeren Winkel hält, wird der Saugkopf relativ zu dem Saugkanal so verschwenkt, dass der Saugspalt weiterhin im Wesentlichen den bisherigen Winkel zu der Fläche beibehält, so dass die Flüssigkeit nach wie vor optimal in den Schmutzflüssigkeitstank gesaugt werden kann. Vorteilhaft ist dem Drehgelenk dabei eine Feder zugeordnet, deren Rückstellkraft den Saugkopf stets gegen die zu reinigende Fläche drückt, so dass eine optimale Saugwirkung der Flüssigkeitssaugeinrichtung gewährleistet ist. Vorteilhaft kann das Drehgelenk eine Drehachse aufweisen, welche als ein drehfest mit einem Endbereich des Saugkanals verbundener Hohlzylinder ausgebildet ist. An den Stirnflächen des Hohlzylinders können vorteilhaft relativ zu dem Hohlzylinder rotierbare Kanalfortsätze angeordnet sein, welche drehfest mit dem Saugkopf verbunden sind. Somit kann die durch den Saugspalt eingesaugte Flüssigkeit durch den Saugkopf und die Kanalfortsätze in die Drehachse des Drehgelenkes und schließlich in den Saugkanal und den Schmutzflüssigkeitstank gefördert werden.It is further proposed that the suction head and the suction channel are connected to each other by means of a rotary joint and are pivotable relative to each other. Due to the pivotability of the suction head relative to the suction channel, the suction head remains at different inclinations of Flüssigkeitsssaugeinrichtung (and thus the suction channel) relative to the surface to be cleaned at advantageously constant angle of the inlet opening of the suction gap to the surface to be cleaned in contact with the surface to be cleaned , If a user holds the liquid suction device relative to the surface to be cleaned with a larger angle, the suction head is pivoted relative to the suction channel so that the suction gap continues to maintain substantially the previous angle to the surface, so that the liquid is still optimal in the dirty liquid tank can be sucked. Advantageously, the hinge is associated with a spring whose restoring force always presses the suction head against the surface to be cleaned, so that an optimal suction of the liquid suction is ensured. Advantageously, the rotary joint can have an axis of rotation which is designed as a hollow cylinder connected in a rotationally fixed manner to an end region of the suction channel. At the end faces of the hollow cylinder rotatable channel extensions can advantageously be arranged relative to the hollow cylinder, which are rotatably connected to the suction head. Thus, the liquid sucked through the suction gap can be conveyed through the suction head and the channel extensions into the rotational axis of the rotary joint and finally into the suction channel and the dirty liquid tank.

Neben der erfindungsgemäßen Flüssigkeitssaugeinrichtung wird ein Feuchtreinigungsgerät, insbesondere zum Feuchtreinigen einer Hartbodenfläche und/oder einer Fensterfläche, vorgeschlagen, welches ein Reinigungselement, eine dem Reinigungselement zugeordnete Flüssigkeitsauftragseinrichtung zum Aufbringen von Flüssigkeit auf das Reinigungselement und/oder die zu reinigende Fläche und eine Flüssigkeitssaugeinrichtung zum Absaugen von Flüssigkeit von der zu reinigenden Fläche aufweist, wobei die Flüssigkeitssaugeinrichtung einen Saugkopf mit einem von zwei Lippen begrenzten Saugspalt aufweist, welcher mittels eines Saugkanals strömungstechnisch so mit einem Schmutzflüssigkeitstank und einem Sauggebläse verbunden ist, dass Flüssigkeit von einer zu reinigenden Fläche via des Saugspalts in den Schmutzflüssigkeitstank saugbar ist, und wobei das Feuchtreinigungsgerät zusätzlich einen Luftkanal aufweist, welcher einerseits mit einer Druckseite eines Gebläses, insbesondere der dem Saugkanal abgewandten Druckseite des Sauggebläses, und andererseits mit dem Saugspalt verbunden ist, so dass von dem Gebläse, insbesondere dem Sauggebläse, erzeugte Blasluft in den Saugspalt förderbar ist.In addition to the liquid suction device according to the invention, a wet cleaning device, in particular for wet cleaning a hard floor surface and / or a window surface, proposed which a cleaning element, the cleaning element associated liquid applicator for applying liquid to the cleaning element and / or the surface to be cleaned and a liquid suction device for aspirating Having liquid from the surface to be cleaned, the Flüssigkeitsssaugeinrichtung having a suction head with a limited by two lips suction gap, which is fluidly connected by means of a suction channel with a dirty liquid tank and a suction fan, that liquid from a surface to be cleaned via the suction gap in the dirty liquid tank is sucked, and wherein the wet cleaning device additionally comprises an air duct, which on the one hand with a pressure side of a blower, in particular de r the discharge side of the suction fan facing away from the suction channel, and on the other hand connected to the suction gap, so that blown air generated by the blower, in particular the suction fan, can be conveyed into the suction gap.

Das erfindungsgemäße Feuchtreinigungsgerät kann beispielsweise ein Hartflächenreinigungsgerät oder ein Fensterreinigungsgerät sein. Als Reinigungselement kann eine Reinigungswalze, ein Reinigungstuch oder ähnliches vorgesehen sein. Das Reinigungselement und/oder die zu reinigende Fläche wird für einen Reinigungsvorgang von der Flüssigkeitsauftragseinrichtung mit Flüssigkeit beaufschlagt. Während der Reinigung und/oder anschließend wird die auf der Fläche befindliche Flüssigkeit mittels des Gebläses, insbesondere des Sauggebläses, des Feuchtreinigungsgerätes in den Schmutzflüssigkeitstank befördert. Hierzu weist das Feuchtreinigungsgerät den Saugkopf auf, welcher dem Reinigungselement in Bewegungsrichtung des Feuchtreinigungsgerätes vorteilhaft nachgeordnet ist. Der Saugkopf weist vorteilhaft flexible Lippen auf, von welchen zumindest eine abdichtend über die Fläche streicht und dabei Flüssigkeit im Bereich des Saugspaltes sammelt. Diese Flüssigkeit wird sodann mittels des von dem Sauggebläse erzeugten Unterdrucks durch den Saugkanal in den Schmutzflüssigkeitstank gesaugt. Zusätzlich wird der Saugspalt mit der Blasluft des Sauggebläses beaufschlagt, so dass die Flüssigkeit zusätzlich von außen in den Saugspalt geblasen wird. Hierdurch kann die Einsaugung der Flüssigkeit in den Saugkopf unterstützt werden, so dass bei einem Abheben des Saugkopfes von der Fläche keine Tropfen oder Streifen auf der Fläche zurückbleiben.The wet cleaning device according to the invention may be, for example, a hard surface cleaning device or a window cleaning device. As a cleaning element, a cleaning roller, a cleaning cloth or the like may be provided. The cleaning element and / or the surface to be cleaned is acted upon by a liquid for the purpose of a cleaning operation by the liquid application device. During cleaning and / or subsequently, the liquid present on the surface is conveyed into the dirty liquid tank by means of the blower, in particular the suction blower, of the wet cleaning device. For this purpose, the wet cleaning device on the suction head, which is advantageously arranged downstream of the cleaning element in the direction of movement of the wet cleaning device. The suction head advantageously has flexible lips, of which at least one sealingly sweeps across the surface and thereby collects liquid in the region of the suction gap. This liquid is then sucked by the vacuum generated by the suction fan through the suction channel into the dirty liquid tank. In addition, the suction gap is acted upon by the blown air of the suction fan, so that the liquid is additionally blown from the outside into the suction gap. In this way, the suction of the liquid can be supported in the suction head, so that when lifting the suction head of the surface no drops or streaks remain on the surface.

Es kann vorgesehen sein, dass die Flüssigkeitsauftragseinrichtung und das Reinigungselement als ein gemeinsames, einen Flüssigkeitstank aufweisendes Flächenaufsatzelement ausgebildet sind. Beispielsweise kann das Flächenaufsatzelement selbst als ein Flüssigkeitstank ausgebildet sein, auf welchen ein Reinigungselement, vorteilhaft ein Reinigungstuch, aufgespannt ist, wobei zwischen dem Flüssigkeitstank und dem Reinigungselement eine Perforierung, Düsen oder ähnliches vorgesehen sind, so dass eine bestimmte Flüssigkeitsmenge, insbesondere kontinuierlich, an das Reinigungselement abgegeben werden kann. Diese Art der Flüssigkeitsauftragseinrichtung erfordert keine Flüssigkeitsleitungen von einem separaten Flüssigkeitstank zu der Flüssigkeitsauftragseinrichtung beziehungsweise dem Reinigungselement, so dass diese Ausführung besonders einfach herzustellen ist und für eine zuverlässige Befeuchtung des Reinigungselementes sorgt.It can be provided that the liquid application device and the cleaning element are formed as a common, a liquid tank exhibiting surface-mounted element. For example, the surface attachment element itself may be formed as a liquid tank on which a cleaning element, preferably a cleaning cloth, is clamped, wherein between the liquid tank and the cleaning element perforation, nozzles or the like are provided so that a certain amount of liquid, in particular continuously, to the Cleaning element can be discharged. This type of liquid application device does not require liquid lines from a separate liquid tank to the liquid application device or the cleaning element, so that this embodiment is particularly easy to manufacture and ensures reliable humidification of the cleaning element.

Vorteilhaft sind der Saugkopf und der Saugkanal und/oder der Saugkopf und das Reinigungselement und/oder das Reinigungselement und der Saugkanal mittels eines Drehgelenkes miteinander verbunden und relativ zueinander verschwenkbar. Somit wird eine größtmögliche Bewegbarkeit des Saugkopfes und/oder des Reinigungselementes geschaffen, so dass die zu reinigende Fläche auch bei unterschiedlichen Winkeln des Feuchtreinigungsgerätes zu der Fläche gereinigt und abgesaugt werden kann. Sofern der Nutzer das Feuchtreinigungsgerät gegenüber der zu reinigenden Fläche verkippt, wird der Saugkopf und/ oder das Reinigungselement durch den Anpressdruck gegen die zu reinigende Fläche relativ zu dem Saugkanal verschwenkt. Der Saugspalt des Saugkopfes kann dabei vorteilhaft einen konstanten Winkel zu der Fläche beibehalten, so dass die Absaugung von Flüssigkeit von der Fläche unabhängig von dem Handhabungswinkel des Feuchtreinigungsgerätes optimal funktioniert. Gleiches gilt für das Reinigungselement, welches vorteilhaft stets die gleiche Orientierung zu der zu reinigenden Fläche aufweisen sollte, sofern es sich dabei nicht um ein rotationssymmetrisches Reinigungselement, wie beispielsweise eine Reinigungswalze, handelt. Um den notwendigen Anpressdruck des Reinigungselementes beziehungsweise des Saugkopfes auf der zu reinigenden Fläche sicherzustellen, ist das Reinigungselement beziehungsweise der Saugkopf vorteilhaft von der Kraft einer Feder beaufschlagt. Diese Feder kann eine Schneckenfeder sein, die zwischen dem Saugkopf/ dem Reinigungselement und dem Saugkanal angeordnet ist. Vorteilhaft weist der Saugkanal eine als Hohlzylinder ausgebildete Drehachse auf, an welcher der Saugkopf und/oder das Reinigungselement unabhängig voneinander rotierbar gelagert sind. Vorteilhaft weist die hohlzylindrische Drehachse dabei endseitig Kanalfortsätze auf, die Strömungswege zum Anschluss an den Saugkopf und damit auch an den Saugspalt bereitstellen. Somit kann die in den Saugspalt eingeblasene und/oder eingesaugte Luft über die Kanalfortsätze in die hohlzylindrische Drehachse und den damit drehfest verbundenen Saugkanal strömen. Durch die unabhängige Beweglichkeit des Saugkopfes von dem Reinigungselement können zudem gegebenenfalls Flächenunebenheiten oder Höhenversätze ausgeglichen werden, welche ansonsten zu einem Abheben des Reinigungselementes beziehungsweise des Saugkopfes von der Fläche führen würden.Advantageously, the suction head and the suction channel and / or the suction head and the cleaning element and / or the cleaning element and the suction channel by means of a rotary joint connected to each other and are pivotable relative to each other. Thus, the greatest possible mobility of the suction head and / or the cleaning element is created, so that the surface to be cleaned can be cleaned and sucked off at different angles of the wet cleaning device to the surface. If the user tilts the wet cleaning device against the surface to be cleaned, the suction head and / or the cleaning element pivoted by the contact pressure against the surface to be cleaned relative to the suction channel. The suction gap of the suction head can advantageously maintain a constant angle to the surface, so that the suction of liquid from the surface works optimally regardless of the handling angle of the wet cleaning device. The same applies to the cleaning element, which should always advantageously have the same orientation to the surface to be cleaned, unless it is not a rotationally symmetrical cleaning element, such as a cleaning roller acts. In order to ensure the necessary contact pressure of the cleaning element or the suction head on the surface to be cleaned, the cleaning element or the suction head is advantageously acted upon by the force of a spring. This spring may be a worm spring, which is arranged between the suction head / the cleaning element and the suction channel. Advantageously, the suction channel to a designed as a hollow cylinder axis of rotation on which the suction head and / or the cleaning element are mounted rotatably independently. Advantageously, the hollow cylindrical axis of rotation in this case at the end channel extensions, which provide flow paths for connection to the suction head and thus also to the suction gap. Thus, the blown into the suction gap and / or sucked air flow through the channel extensions in the hollow cylindrical axis of rotation and thus rotatably connected suction channel. Due to the independent mobility of the suction head of the cleaning element also surface irregularities or height displacements may optionally be compensated, which would otherwise lead to a lifting of the cleaning element or the suction head of the surface.

Es wird vorgeschlagen, dass der Luftkanal zwei in Strömungsrichtung parallel geschaltete Teilluftkanäle aufweist, welche jeweils mit einem Spaltendbereich des Saugspaltes verbunden sind, so dass von dem Gebläse, insbesondere dem Sauggebläse, erzeugte Blasluft den Saugspalt ausgehend von den Spaltendbereichen in Richtung einer zwischen den Spaltendbereichen ausgebildeten Spaltmitte beaufschlagt. Ausgehend von der Druckseite des Gebläses spaltet sich der Luftkanal somit in zwei Teilluftkanäle auf, von welchen jeder einen der Spaltendbereiche des Saugspaltes mit Blasluft beaufschlagt. Der Blasluftstrom, welcher auf der Druckseite des Sauggebläses austritt, wird vorteilhaft in einem trichterförmigen Abschnitt des Luftkanals aufgefangen und über die beiden Teilluftkanäle von außen zwischen die beiden Lippen des Saugspaltes geleitet. Durch diese seitlichen Blasluftströme wird die abgesaugte Flüssigkeit symmetrisch von beiden Seiten zwischen die Lippen in die Mitte des Saugspaltes gelenkt.It is proposed that the air duct has two partial air ducts which are connected in parallel in the flow direction and which are each connected to a gap end region of the suction gap, so that blown air generated by the blower, in particular the suction blower, reaches the suction gap starting from the gap end regions acted upon in the direction of a gap formed between the Spaltendbereichen gap. Starting from the pressure side of the blower, the air channel thus splits into two partial air channels, each of which acts on one of the Spaltendbereiche the suction gap with blowing air. The Blasluftstrom, which exits on the pressure side of the suction fan is advantageously collected in a funnel-shaped portion of the air duct and passed over the two partial air ducts from the outside between the two lips of the suction gap. By these lateral blown air streams, the sucked liquid is deflected symmetrically from both sides between the lips in the middle of the suction gap.

Vorteilhaft sind die Teilluftkanäle - bezogen auf eine Verbindung von der Spaltmitte zu den Spaltendbereichen - an die nach außen weisenden Stirnflächen der Spaltendbereiche angeschlossen. Somit beaufschlagt die Blasluft den Saugspalt entlang dessen Längserstreckung von außen nach innen, d.h. zu der Spaltmitte hin. Dadurch werden an den Spaltendbereichen befindliche Flüssigkeitstropfen in Richtung der Spaltmitte geblasen, so dass diese problemlos zu dem Saugkanal gelangen können und bei einem Abheben des Saugkopfes von der zu reinigenden Fläche nicht mehr abtropfen.Advantageously, the partial air channels are connected to the outwardly facing end faces of the gap end regions, based on a connection from the middle of the gap to the gap end regions. Thus, the blown air acts on the suction gap along its longitudinal extent from outside to inside, i. towards the center of the gap. As a result, liquid droplets located at the gap end regions are blown in the direction of the center of the gap so that they can easily reach the suction channel and no longer drip off the surface to be cleaned when the suction head lifts up.

Des Weiteren wird vorgeschlagen, dass der Saugkanal im Bereich der Spaltmitte an den Saugspalt angeschlossen ist. Dadurch werden die Flüssigkeitstropfen, welche sich an den Spaltendbereichen des Saugspaltes befinden, in Richtung des unterdruckbeaufschlagten Saugkanals gefördert, so dass diese besonders einfach in den Schmutzflüssigkeitstank eingesaugt werden können. Dies unterstützt die Förderung der Flüssigkeit an dem Saugspalt von außen nach innen.Furthermore, it is proposed that the suction channel is connected to the suction gap in the region of the gap center. As a result, the liquid drops, which are located at the gap end regions of the suction gap, are conveyed in the direction of the vacuum-loaded suction channel, so that they can be sucked into the dirty liquid tank in a particularly simple manner. This supports the promotion of the liquid at the suction gap from outside to inside.

Schließlich betrifft die Erfindung auch ein Verfahren zum Absaugen von Flüssigkeit von einer zu reinigenden Fläche, insbesondere einer Hartbodenfläche und/oder einer Fensterfläche, mittels einer Flüssigkeitssaugeinrichtung, die einen Saugkopf mit einem von zwei Lippen begrenzten Saugspalt, einen Schmutzflüssigkeitstank sowie ein Sauggebläse aufweist, wobei Flüssigkeit mittels des Sauggebläses via des Saugspaltes in den Schmutzflüssigkeitstank gesaugt wird, dadurch gekennzeichnet, dass der Saugspalt, insbesondere ein oder beide Spaltendbereiche des Saugspaltes während des Absaugens der Flüssigkeit mit Blasluft eines Gebläses, insbesondere Blasluft des Sauggebläses, beaufschlagt wird, um die Flüssigkeit in den Saugkopf zu fördern.Finally, the invention also relates to a method for aspirating liquid from a surface to be cleaned, in particular a hard bottom surface and / or a window surface, by means of a liquid suction device, the a suction head having a suction gap delimited by two lips, a dirty fluid tank and a suction fan, wherein liquid is sucked by the suction fan via the suction gap in the dirty liquid tank, characterized in that the suction gap, in particular one or both Spaltendbereiche the suction gap during the suction of the liquid with blown air of a blower, in particular blowing air of the suction fan, is applied to promote the liquid in the suction head.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
ein erfindungsgemäßes Feuchtreinigungsgerät in einer perspektivischen Darstellung,
Fig. 2
das Feuchtreinigungsgerät gemäß Figur 1 in einer Seitenansicht.
In the following the invention will be explained in more detail with reference to an embodiment. Show it:
Fig. 1
an inventive wet cleaning device in a perspective view,
Fig. 2
the wet cleaning device according to FIG. 1 in a side view.

Gezeigt ist ein Feuchtreinigungsgerät 13, hier als handgeführtes Fensterreinigungsgerät ausgebildet, welches eine Flüssigkeitssaugeinrichtung 1 sowie ein Reinigungselement 14 und eine Flüssigkeitsauftragseinrichtung 15 aufweist. Das Reinigungselement 14 und die Flüssigkeitsauftragseinrichtung 15 sind als ein gemeinsames, einen Flüssigkeitstank aufweisendes Flächenaufsatzelement ausgebildet. Der Flüssigkeitstank weist an der der zu reinigenden Fläche zugewandten Seite das Reinigungselement 14, hier ausgebildet als Reinigungstuch, auf. Die Flüssigkeitsauftragseinrichtung 15 und das Reinigungselement 14 sind durch eine Perforierung der Wandung der Flüssigkeitsauftragseinrichtung 15 so miteinander verbunden, dass Flüssigkeit aus dem Tank der Flüssigkeitsauftragseinrichtung 15 kontinuierlich an das Reinigungselement 14 abgegeben wird und somit auf der zu reinigenden Fläche für einen Reinigungsvorgang zur Verfügung steht.Shown is a wet cleaning device 13, designed here as a hand-held window cleaning device having a liquid suction device 1 and a cleaning element 14 and a liquid applicator 15. The cleaning element 14 and the liquid application device 15 are formed as a common surface-mounted element having a liquid tank. The liquid tank has on the side facing the surface to be cleaned, the cleaning element 14, here formed as a cleaning cloth on. The liquid application device 15 and the cleaning element 14 are connected to one another by perforating the wall of the liquid application device 15 such that liquid is continuously discharged from the tank of the liquid application device 15 to the cleaning element 14 and is thus available for cleaning on the surface to be cleaned.

Die Flüssigkeitssaugeinrichtung 1 des Feuchtreinigungsgerätes 13 weist einen Saugkopf 2 auf, welcher hier als ein flächiges, doppelwandiges Element ausgebildet ist, zwischen dessen Wandungen Flüssigkeit geführt werden kann. Auf der in Richtung der zu reinigenden Fläche weisenden Seite weist der Saugkopf 2 zwei Lippen 3 auf, welche einen geraden Saugspalt 4 bilden, dessen Längserstreckung senkrecht zu einer üblichen Bewegungsrichtung des Feuchtreinigungsgerätes 13 stehen. Der Saugkopf 2 ist über ein Drehgelenk 12 mit einem Saugkanal 7 verbunden, durch welchen Flüssigkeit von dem Saugspalt 4 zu einem Sauggebläse 6 strömen kann. Zwischen dem Sauggebläse 6 und dem Saugkanal 7 ist ein Schmutzflüssigkeitstank 5 angeordnet, welcher die von der zu reinigenden Fläche aufgesaugte Flüssigkeit aufnimmt. Das zwischen dem Saugkanal 7 und dem Saugkopf 2 angeordnete Drehgelenk 12 weist eine Drehachse 19 auf, welche als ein parallel zu der Längserstreckung des Saugspaltes 4 verlaufender Hohlzylinder ausgebildet ist. Der Saugkopf 2 ist dabei über endseitig an der Drehachse 19 montierte Kanalfortsätze 20 rotierbar an der Drehachse19 des Drehgelenkes 12 angeordnet, wobei eine zugeordnete Feder 18 den Saugkopf 2 gegen die zu reinigende Fläche drückt und somit unabhängig von der Winkelstellung des Feuchtreinigungsgerätes 13 zu der zu reinigenden Fläche einen Kontakt zwischen der Fläche und dem Saugspalt 4 des Saugkopfes 2 sicherstellt. Die Kanalfortsätze 20 verbinden den Saugkopf 2 unabhängig von dessen Winkelstellung zu der zu reinigenden Fläche strömungstechnisch mit der Drehachse 19 und dem Saugkanal 7.The liquid suction device 1 of the wet cleaning device 13 has a suction head 2, which is designed here as a flat, double-walled element, between the walls of liquid can be performed. On the side pointing in the direction of the surface to be cleaned, the suction head 2 has two lips 3, which form a straight suction gap 4 whose longitudinal extension is perpendicular to a normal direction of movement of the wet cleaning device 13. The suction head 2 is connected via a rotary joint 12 to a suction channel 7, through which liquid can flow from the suction gap 4 to a suction fan 6. Between the suction fan 6 and the suction channel 7, a dirty liquid tank 5 is arranged, which receives the absorbed by the surface to be cleaned liquid. The arranged between the suction channel 7 and the suction head 2 pivot 12 has an axis of rotation 19 which is formed as a parallel to the longitudinal extent of the suction gap 4 extending hollow cylinder. The suction head 2 is rotatably mounted on the axis of rotation 19 of the rotary joint 12 via end mounted on the axis of rotation 19, wherein an associated spring 18 presses the suction head 2 against the surface to be cleaned and thus independent of the angular position of the wet cleaning device 13 to be cleaned Surface ensures contact between the surface and the suction gap 4 of the suction head 2. The channel extensions 20 connect the suction head 2, regardless of its angular position to the surface to be cleaned fluidly with the axis of rotation 19 and the suction channel. 7

Auf der Druckseite des Sauggebläses 6 ist ein Luftkanal 8 angeordnet, durch welchen die das Sauggebläse 6 verlassende Blasluft zu dem Saugspalt 4 des Saugkopfes 2 gefördert wird. Der Luftkanal 8 teilt sich in zwei parallel geschaltete Teilluftkanäle 9, von welchen jeder Teilluftkanal 9 einen Spaltendbereich 10 des Saugspaltes 4 mit Blasluft beaufschlagt, so dass die Blasluft von beiden Spaltendbereichen 10 ausgehend symmetrisch in Richtung der Spaltmitte 11 des Saugspaltes 4 gefördert wird. Dabei werden an den Spaltendbereichen 10 hängende Flüssigkeitstropfen mitgerissen und in den Saugkopf 2 gefördert, wo diese schließlich durch die Kanalfortsätze 20, die Drehachse 19 und den Saugkanal 7 in den Schmutzflüssigkeitstank 5 gelangen. Dadurch wird an den Spaltendbereichen 10 vorhandene Flüssigkeit stets in den Saugkopf 2 geblasen, so dass es in diesem Bereich nicht zu Flüssigkeitsansammlungen kommen kann.On the pressure side of the suction fan 6, an air channel 8 is arranged, through which the blower air leaving the suction fan 6 is conveyed to the suction gap 4 of the suction head 2. The air duct 8 is divided into two partial air ducts 9 connected in parallel, of which each partial air duct 9 inflates a gap end region 10 of the suction gap 4, so that the blown air is conveyed from both gap end regions 10 symmetrically in the direction of the gap center 11 of the suction gap 4. In this case, 10 hanging at the Spaltendbereichen Liquid droplets entrained and promoted in the suction head 2, where they finally pass through the channel extensions 20, the rotation axis 19 and the suction channel 7 in the dirty liquid tank 5. As a result, liquid present at the gap end regions 10 is always blown into the suction head 2, so that liquid accumulations can not occur in this region.

Das Gehäuse des Feuchtreinigungsgerätes 13 weist zudem in üblicher Weise einen Schalter 16 zum Ein- oder Ausschalten des Feuchtreinigungsgerätes 13 auf, sowie einen Griff 17, an welchem ein Nutzer des Feuchtreinigungsgerätes 13 dieses bei einem Reinigungsvorgang führen kann. Der Schmutzflüssigkeitstank 5 ist entnehmbar in dem Feuchtreinigungsgerät 13 angeordnet, so dass die darin enthaltene Flüssigkeit entfernt werden kann. Alternativ kann es auch vorgesehen sein, dass der Schmutzflüssigkeitstank 5 eine Öffnung aufweist, durch die ein Ausgießen der Flüssigkeit möglich ist. Ebenso kann auch die Flüssigkeitsauftragseinrichtung 15 eine Öffnung zum Befüllen mit und Ausgießen von Flüssigkeit aufweisen.The housing of the wet cleaning device 13 also has in the usual way a switch 16 for switching on or off of the wet cleaning device 13, and a handle 17 to which a user of the wet cleaning device 13 this can lead during a cleaning process. The dirty liquid tank 5 is removably disposed in the wet cleaning apparatus 13, so that the liquid contained therein can be removed. Alternatively, it can also be provided that the dirty liquid tank 5 has an opening through which a pouring of the liquid is possible. Likewise, the liquid application device 15 may have an opening for filling with and pouring liquid.

Die Erfindung funktioniert nun so, dass der Nutzer den Tank der Flüssigkeitsauftragseinrichtung 15 mit Flüssigkeit befüllt. Sodann schaltet er das Sauggebläse 6 mittels des Schalters 16 ein. Während des anschließenden Reinigungsvorgangs führt der Nutzer das Feuchtreinigungsgerät 13 über die zu reinigende Fläche, wobei Flüssigkeit aus dem Tank der Flüssigkeitsauftragseinrichtung 15 auf das Reinigungselement 14 abgegeben wird. Die Flüssigkeit gelangt über das Reinigungselement 14, hier das Reinigungstuch, auf die zu reinigende Fläche und löst aufgrund der Verfahrbewegung des Feuchtreinigungsgerätes 13 Schmutz von der zu reinigenden Fläche. Durch einen Rückhub des Feuchtreinigungsgerätes 13, bei welchem der Nutzer das Feuchtreinigungsgerät 13 üblicherweise zu sich hinzieht, gelangt der Saugspalt 4 in Kontakt mit der auf der gereinigten Fläche liegenden Flüssigkeit, so dass die Flüssigkeit aufgrund des an dem Saugspalt 4 herrschenden Unterdruckes in den Saugkopf 2 gesaugt werden kann. Die Flüssigkeit gelangt anschließend von dem Saugkopf 2 über die Kanalfortsätze 20, die Drehachse 19 und den Saugkanal 7 in den Schmutzflüssigkeitstank 5. Gleichzeitig strömt Blasluft von der Druckseite des Sauggebläses 6 durch die Teilluftkanäle 9 zu dem Saugspalt 4. Insbesondere werden die Spaltendbereiche 10 des Saugspaltes 4 mit der Blasluft beaufschlagt, so dass die in dem Saugspalt 4 befindliche Flüssigkeit von außen nach innen, d.h. von den Spaltendbereichen 10 zu der Spaltmitte 11, gefördert wird. Dabei wird die Flüssigkeit von dem Unterdruck des Sauggebläses 6 in Richtung der Kanalfortsätze 20, d.h. gleichzeitig auch in Richtung des Saugkanales 7, abgelenkt. Dies führt insgesamt dazu, dass die Spaltendbereiche 10 frei von Flüssigkeit gehalten werden, so dass es bei einem Abheben des Saugkopfes 2 von der zu reinigenden Fläche nicht zu einem Abtropfen von Flüssigkeit kommt.The invention now works so that the user fills the tank of the liquid applicator 15 with liquid. He then turns on the suction fan 6 by means of the switch 16. During the subsequent cleaning operation, the user guides the wet cleaning device 13 over the surface to be cleaned, whereby liquid is discharged from the tank of the liquid application device 15 onto the cleaning element 14. The liquid passes through the cleaning element 14, here the cleaning cloth, on the surface to be cleaned and dissolves due to the traversing movement of the wet cleaning device 13 dirt from the surface to be cleaned. As a result of a return stroke of the wet cleaning device 13, in which the user usually pulls the wet cleaning device 13 towards him, the suction gap 4 comes into contact with the liquid lying on the cleaned surface, so that the liquid flows into the suction head 2 due to the negative pressure prevailing at the suction gap 4 sucked can be. At the same time, blowing air flows from the pressure side of the suction fan 6 through the partial air channels 9 to the suction gap 4. In particular, the gap end regions 10 of the suction gap 4 is supplied with the blowing air, so that the liquid present in the suction gap 4 is conveyed from outside to inside, ie from the gap end regions 10 to the gap center 11. In this case, the liquid from the negative pressure of the suction fan 6 in the direction of the channel extensions 20, that is simultaneously deflected in the direction of the suction channel 7. On the whole, this results in the gap end regions 10 being kept free of liquid, so that when the suction head 2 is lifted off the surface to be cleaned, no dripping of liquid occurs.

Durch das zwischen dem Saugkanal 7 und dem Saugkopf 2 angeordnete Drehgelenk 12 kann die Winkelstellung des Saugkopfes 2 zu dem Saugkanal 7 verändert werden. Hierdurch ist es möglich, dass der Saugkopf 2, und damit auch der Saugspalt 4, unabhängig von einer Winkelstellung des Feuchtreinigungsgerätes 13 zu der zu reinigenden Fläche in konstantem Winkel zu der Fläche steht und somit eine konstante Saugwirkung erzielt werden kann. Neben dem Saugkopf 2 ist auch die Flüssigkeitsauftragseinrichtung 15 drehbeweglich an der Drehachse 19 angeordnet, so dass auch die Flüssigkeitsauftragseinrichtung 15 unabhängig von der Winkelstellung des Feuchtreinigungsgerätes 13 auf der zu reinigenden Fläche aufliegt. Sofern die zu reinigende Fläche Unebenheiten oder Höhenversätze aufweist, können sowohl die Flüssigkeitsauftragseinrichtung 15 als auch der Saugkopf 2 unabhängig voneinander um die Drehachse 19 rotieren, so dass beide optimal auf der Fläche aufstehen.By arranged between the suction channel 7 and the suction head 2 swivel joint 12, the angular position of the suction head 2 to the suction channel 7 can be changed. This makes it possible that the suction head 2, and thus also the suction gap 4, independent of an angular position of the wet cleaning device 13 to the surface to be cleaned at a constant angle to the surface and thus a constant suction can be achieved. In addition to the suction head 2 and the liquid applicator 15 is rotatably mounted on the rotation axis 19, so that the liquid applicator 15 rests independently of the angular position of the wet cleaning device 13 on the surface to be cleaned. If the surface to be cleaned has unevenness or height offsets, both the liquid application device 15 and the suction head 2 can rotate independently about the axis of rotation 19, so that both optimally stand up on the surface.

Nach Beendigung des Reinigungsvorgangs schaltet der Nutzer das Feuchtreinigungsgerät 13 mittels des Schalters 16 ab. Sodann kann er auch die von der Fläche abgesaugte Flüssigkeit aus dem Schmutzflüssigkeitstank 5 entfernen und gegebenenfalls überschüssige Flüssigkeit aus der Flüssigkeitsauftragseinrichtung 15 ausgießen.After completion of the cleaning process, the user switches off the wet cleaning device 13 by means of the switch 16. Then he can also remove the sucked from the surface liquid from the dirty liquid tank 5 and optionally pour excess liquid from the liquid applicator 15.

Obwohl der Saugspalt 4 im dargestellten Ausführungsbeispiel mittels des Sauggebläses 6 mit Blasluft beaufschlagt wurde, ist es ebenso möglich, dafür ein zusätzliches Gebläse zu verwenden.Although the suction gap 4 was acted upon in the illustrated embodiment by means of the suction fan 6 with blowing air, it is also possible to use an additional fan for this purpose.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
FlüssigkeitssaugeinrichtungFlüssigkeitssaugeinrichtung
22
Saugkopfsuction head
33
Lippelip
44
Saugspaltsuction gap
55
SchmutzflüssigkeitstankDirty liquid tank
66
Sauggebläseaspirator
77
Saugkanalsuction
88th
Luftkanalair duct
99
TeilluftkanalPart air duct
1010
SpaltendbereichSpaltendbereich
1111
Spaltmittegap center
1212
Drehgelenkswivel
1313
FeuchtreinigungsgerätWet cleaning device
1414
Reinigungselementcleaning element
1515
FlüssigkeitsauftragseinrichtungLiquid applicator
1616
Schalterswitch
1717
GriffHandle
1818
Federfeather
1919
Drehachseaxis of rotation
2020
KanalfortsatzChannel extension

Claims (11)

  1. Liquid-suction device (1), in particular for suctioning liquid away from a hard floor surface and/or a window surface, which liquid-suction device (1) comprises a suction head (2) having a suction aperture (4) delimited by two lips (3), a tank (5) for contaminated liquid, and a suction fan (6), the suction aperture (4), the tank (5) for contaminated liquid, and the suction fan (6) being interconnected by means of a suction channel (7) such that liquid from a surface to be cleaned can be suctioned into the tank (5) for contaminated liquid through the suction aperture (4), characterised by an air duct (8) which is connected both to a discharge side of a fan, in particular to the discharge side of the suction fan (6) that faces away from the suction channel (7), and to the suction aperture (4), such that blown air produced by the fan, in particular by the suction fan (6), can be conveyed into the suction aperture (4).
  2. Liquid-suction device (1) according to claim 1, characterised in that the air duct (8) comprises two partial air ducts (9) that are connected in parallel in the flow direction and are each connected to an aperture end region (10) of the suction aperture (4) such that, starting from the aperture end regions (10), blown air produced by the fan, in particular by the suction fan (6), is admitted to the suction aperture (4) towards an aperture centre (11) between the aperture end regions (10).
  3. Liquid-suction device (1) according to claim 2, characterised in that, based on a connection between the aperture centre (11) and the aperture end regions (10), the partial air ducts (9) are connected to the outwardly pointing end faces of the aperture end regions (10).
  4. Liquid-suction device (1) according to either claim 1 or claim 2, characterised in that the suction channel (7) is connected to the suction aperture (4) in the region of the aperture centre (11).
  5. Liquid-suction device (1) according to any of the preceding claims, characterised in that the suction head (2) and the suction channel (7) are interconnected by means of a swivel joint (12) and can be pivoted relative to one another.
  6. Damp-cleaning apparatus (13), in particular for damp cleaning a hard floor surface and/or a window surface, comprising a cleaning element (14), in particular a cleaning roller and/or a cleaning cloth, a liquid-application device (15), associated with the cleaning element (14), for applying liquid to the cleaning element (14) and/or the surface to be cleaned, and comprising a liquid-suction device (1) for suctioning liquid away from the surface to be cleaned, the liquid-suction device (1) comprising a suction head (2) having a suction aperture (4) which is delimited by two lips (3) and is fluidically connected to a tank (5) for contaminated liquid and to a suction fan (6) by means of a suction channel (7) such that liquid can be suctioned from a surface to be cleaned into the tank (5) for contaminated liquid through the suction aperture (4), characterised by an air duct (8) which is connected both to a discharge side of a fan, in particular to the discharge side of the suction fan (6) that faces away from the suction channel (7), and to the suction aperture (4), such that blown air produced by the fan, in particular by the suction fan (6), can be conveyed into the suction aperture (4).
  7. Damp-cleaning apparatus (13) according to claim 6, characterised in that the suction head (2) and the suction channel (7) and/or the suction head (2) and the cleaning element (14) and/or the cleaning element (14) and the suction channel (7) are interconnected by means of a swivel joint (12) and can be pivoted relative to one another.
  8. Damp-cleaning apparatus (13) according to either claim 6 or claim 7, characterised in that the air duct (8) comprises two partial air ducts (9) which are connected in parallel in the flow direction and are each connected to an aperture end region (10) of the suction aperture (4) such that, starting from the aperture end regions (10), blown air produced by the fan, in particular the suction fan (6), is admitted to the suction aperture (4) towards an aperture centre (11) formed between the aperture end regions (10).
  9. Damp-cleaning apparatus (13) according to claim 8, characterised in that based on a connection between the aperture centre (11) and the aperture end regions (10), the partial air ducts (9) are connected to the outwardly pointing end faces of the aperture end regions (10).
  10. Damp-cleaning apparatus (13) according to any of claims 6 to 9, characterised in that the suction channel (7) is connected to the suction aperture (4) in the region of the aperture centre (11).
  11. Method for suctioning liquid away from a surface to be cleaned, in particular a hard floor surface and/or a window surface, by means of a liquid-suction device (1), which comprises a suction head (2) having a suction aperture (4) delimited by two lips (3), a tank (5) for contaminated liquid, and a suction fan (6), liquid being suctioned into the tank (5) for contaminated liquid through the suction aperture (4) by means of the suction fan (6), characterised in that blown air from a fan, in particular blown air from the suction fan (6), is admitted to the suction aperture (4), in particular one or both aperture end regions (10) of the suction aperture (4), while the liquid is being suctioned, in order to convey the liquid into the suction head (2).
EP16171078.5A 2015-05-29 2016-05-24 Liquid suction device Active EP3097836B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015108527.5A DE102015108527A1 (en) 2015-05-29 2015-05-29 Flüssigkeitssaugeinrichtung

Publications (2)

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EP3097836A1 EP3097836A1 (en) 2016-11-30
EP3097836B1 true EP3097836B1 (en) 2018-07-18

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EP16171078.5A Active EP3097836B1 (en) 2015-05-29 2016-05-24 Liquid suction device

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EP (1) EP3097836B1 (en)
JP (1) JP2016221252A (en)
CN (1) CN106175581B (en)
DE (1) DE102015108527A1 (en)
TW (1) TWI696439B (en)

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US20200315417A1 (en) * 2016-10-18 2020-10-08 Lg Electronics Inc. Remaining water suction device having air blowing function

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CN207492724U (en) * 2017-03-28 2018-06-15 何文波 A kind of window scraping machine
CN112842169A (en) * 2021-02-03 2021-05-28 深圳市杉川机器人有限公司 Floor cleaning machine

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DE102008029687A1 (en) * 2007-07-09 2009-01-15 Vorwerk & Co. Interholding Gmbh Combination of a vacuum cleaner nozzle with a wipe, as well as wiping cloth and method for wet cleaning of floors
JP2012501385A (en) * 2008-08-28 2012-01-19 テナント カンパニー Device with indicator light that lights through electrolysis cell and liquid
DE102011050697A1 (en) * 2011-05-27 2012-11-29 Leifheit Ag Liquid suction device for removing and absorbing liquids
CN203042128U (en) * 2013-02-05 2013-07-10 朱厚林 Modified water aspirator with hard surface
DE102013102263A1 (en) * 2013-03-07 2014-09-11 Vorwerk & Co. Interholding Gmbh Wet cleaning device, in particular window cleaning device
DE102013021277A1 (en) * 2013-12-17 2015-07-02 Nilfisk-Advance A/S Portable hard surface suction device

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Publication number Priority date Publication date Assignee Title
US20200315417A1 (en) * 2016-10-18 2020-10-08 Lg Electronics Inc. Remaining water suction device having air blowing function
US11517162B2 (en) * 2016-10-18 2022-12-06 Lg Electronics Inc. Remaining water suction device having air blowing function

Also Published As

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TW201700060A (en) 2017-01-01
TWI696439B (en) 2020-06-21
CN106175581B (en) 2020-04-21
DE102015108527A1 (en) 2016-12-01
EP3097836A1 (en) 2016-11-30
JP2016221252A (en) 2016-12-28
CN106175581A (en) 2016-12-07

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