EP3474717B1 - Wet cleaning apparatus with a rotatable cleaning roller - Google Patents

Description

Technical field

The invention relates to a wet cleaning device, in particular a wet wiping device, with a cleaning roller rotatable about a roller axis and a moistening device for applying a liquid to the cleaning roller.

Furthermore, the invention relates to a method for operating a wet cleaning device, in particular a wet wiping device.

State of the art

Wet cleaning devices and methods for operating a wet cleaning device are known in the prior art.

The DE 102 29 611 B3 For example, discloses a wet cleaning device with a wiper body that can be driven to rotate about an axis of rotation, in which a cleaning liquid is removed from a storage tank and sprayed onto the surface of the wiper body by means of spray nozzles arranged in the direction of the axis of rotation of the wiper body. The wiping body thus moistened is guided over a surface to be cleaned during a wiping operation, the wiping body taking up dirt from the surface to be cleaned.

During the wiping operation, the wiping body is increasingly covered with dirt, so that regeneration of the wiping body is necessary. For this purpose, the wiper body is lifted off the surface to be cleaned, surrounded with a housing and sprayed with unused cleaning liquid. The wiper body rotates so that cleaning fluid and dirt are expelled from the wiper body and hit the inside of the housing and are transferred to a receiving tank.

The US 4,875,246 A further discloses a wet cleaning device with a wiper body which can be driven to rotate about an axis of rotation, a wringing roller and a moistening device. The wringing roller can be displaced from an active to an inactive position relative to the rotatably drivable wiper body.

The publication US 1,536,687 A. furthermore discloses a wet cleaning device with a wiper body which can be driven to rotate about an axis of rotation and to which a guide plate is assigned, which guides material from the wiper body into a collecting container.

Summary of the invention

Starting from the aforementioned prior art, it is an object of the invention to develop a wet cleaning device of the aforementioned type in such a way that the cleaning roller can be regenerated with the best possible result, in particular with a shorter regeneration time and less use of liquid. Furthermore, it is a further object of the invention to develop the wet cleaning device alternatively or additionally with regard to the application of liquid to the cleaning roller.

To achieve the aforementioned object, it is proposed that the wet cleaning device include a wiping device that can be moved to the cleaning roller, in particular a wiping lip, to support the removal of liquid and / or dirt from the cleaning roller and / or Support the application of liquid to the cleaning roller, wherein the moistening device and the stripping device are parts of an overall functional unit that can be displaced relative to the cleaning roller, so that the functional unit as a whole can be shifted from a first operating position to a second operating position and vice versa.

The stripping device according to the invention can therefore basically perform two tasks.

On the one hand, the scraper device moved towards the cleaning roller can improve the moistening of the cleaning roller. The cleaning roller is usually provided with a textile cleaning covering, between whose fibers moisture can be absorbed and stored. If the stripping device is moved so close to the cleaning roller that it only touches part of the fiber length, the stripping device can be liquid (continue on page 3 of the originally submitted documents) Press speed between the fibers of the cleaning roller without this can be detached from the cleaning surface again when the cleaning roller rotates further by sweeping over the fibers with the stripping device.

Furthermore, the scraper device can be used to remove the liquid and / or to remove dirt from the cleaning roller. For this purpose, the stripping device is moved towards the cleaning roller in such a way that it presses against the cleaning roller with a pressing force and preferably mechanically wipes the liquid off the cleaning roller. As a result of this wiping, both the liquid is pressed or wiped out of the material of the cleaning roller and the dirt that is taken up, so that the success of regeneration is improved compared to the prior art. Due to the rotation of the cleaning roller, the dirt is also thrown off the cleaning roller or the scraper device and can be fed to a collecting container. The cleaning effect is thus achieved, on the one hand, by spinning off the liquid / dirt from the rotating cleaning roller and, on the other hand, by wiping off, in which case liquid or dirt is also pressed out of the cleaning roller. In addition, the effect is used that the fibers or bristles of the cleaning covering, which are bent during the rotation of the cleaning element by the stripping device, are straightened up again after passing through the stripping device by the internal stress and the acting centrifugal force. This also supports the spinning off of the liquid or dirt.

The scraper device is advantageously formed over the entire axial length of the cleaning roller, so that the entire peripheral surface of the cleaning roller can be regenerated or moistened during a complete rotation of the cleaning roller.

In the sense of the invention, the wet cleaning device can be a wet cleaning device hand-guided by a user or also an automatically movable wet cleaning device, for example a wiping robot. In addition, in the context of the invention, wet cleaning devices are to be understood which have a suction function and a wiping function, for example combined suction-wiping devices.

It is proposed that the moistening device and the stripping device are parts of a common functional unit. This functional unit thus takes on the one hand the task of moistening the cleaning roller and on the other hand the task of wiping off liquid and dirt from the cleaning roller. Likewise, with appropriate spacing from the surface of the cleaning roller, the scraper device also fulfills the aforementioned function of incorporating the liquid into a cleaning surface of the cleaning roller. The design as a common functional unit also has the advantage that the functional unit as a whole can be installed in the wet cleaning device, so that fewer assembly steps and thus less assembly time are required during manufacture. In addition, a smaller space for the functional unit within the wet cleaning device is necessary, since a smaller number of fasteners and the like is required. In addition, a common housing can be made smaller than two individual housings arranged next to one another, each for the moistening device and the stripping device. In the sense of a common functional unit, both variants are conceivable in which the moistening device and the stripping device are formed in one piece, for example in the sense of a common one Plastic injection molded part, as well as variants in which the moistening device and the stripping device are attached to one another to form a common functional unit, so that they can be installed together in the wet cleaning device. The common functional unit - and thus also the moistening device and the stripping device - is particularly advantageously formed along the entire longitudinal extent of the cleaning roller, so that moistening and wiping is possible evenly over the length of the cleaning roller. The functional unit is displaceably arranged on the housing of the wet cleaning device, so that it can be displaced relative to the cleaning roller overall with a single displacement movement. The functional unit can thus be shifted particularly easily and quickly from a position for a wiping operation into a position for a regeneration operation.

Furthermore, it is proposed that the stripping device and / or the functional unit are mounted on a housing of the wet-cleaning device so as to be pivotable about a pivot axis arranged parallel to the cleaning roller, the stripping device and / or the functional unit being acted upon in particular by a spring force directed in the direction of the cleaning roller. As a result, the scraper device or the functional unit can be swiveled from a wiping position into a regeneration position, ie either swiveled away from the cleaning roller or swiveled towards the cleaning roller, the scraper device coming into mechanical contact with the cleaning roller in the latter case. In order to achieve a pressure on the cleaning roller with the greatest possible force in the position of the scraper device or the functional unit pivoted toward the cleaning roller, an actuating device acting on the scraper device or functional unit advantageously has a spring which presses the scraper device against the cleaning roller. In addition, the spring loading can compensate for tolerances in the event of fluctuations in diameter the cleaning roller, uneven floors or the like) can be reached. The actuating device can, for example, have a torsion spring drive with a helical spring.

It is proposed that the stripping device and / or the functional unit is assigned a displacement drive which is designed to relocate the stripping device and / or the functional unit relative to the cleaning roller. Thus, in addition to optionally a spring for applying a contact pressure suitable for regeneration to the cleaning roller, the wet cleaning device has a displacement drive, for example a linear drive or a swivel drive, which can shift the stripping device and / or the functional unit relative to the cleaning roller. The displacement drive can preferably move the stripping device or the functional unit in several stages. A first stage can be a completely detached position of the stripping device from the cleaning roller. A second position can be set up in such a way that the stripping device only touches an outermost free end region of the fibers of a cleaning covering of the cleaning roller. Finally, a third position can be characterized in that the stripping device presses against the cleaning roller with the greatest possible force. The latter in particular in connection with the spring force of the previously proposed spring.

Furthermore, it is proposed that the wet cleaning device has a displaceable cover element for completing a roller cover surrounding the cleaning roller and in particular also the moistening device and the wiping device, which cover corresponds to the shape in the circumferential direction of the cleaning roller, the cover element being designed to optionally release and / or close an opening area of the roller cover . The roller cover is along the entire length Length of the cleaning roller and preferably completely surrounds the cleaning roller in the circumferential direction except for the opening area. The cover element serves as a closure element in order to close the opening area for a regeneration operation of the wet cleaning device, so that liquid removed or thrown off from the cleaning roller cannot get outside and can come into contact with a user of the wet cleaning device. In addition, the situational closing of the opening area by means of the cover element also lends itself in the sense of drip protection during transport or a parking position of the cleaning device. In addition to the cleaning roller, the moistening device and the scraper device, particularly preferably in the form of a common functional unit, are advantageously arranged within the roller cover. The roller cover is thus an outer encapsulation both for the cleaning roller and for the entire liquid-carrying elements, so that the environment is optimally shielded from liquid which splashes or drips off.

The cleaning roller is advantageously arranged such that it can be displaced relative to the roller cover on the wet cleaning device, so that the cleaning roller protrudes from the roller cover during a wiping operation of the wet cleaning device and can come into contact with a surface to be cleaned, and is shifted into the roller cover during a regeneration operation and that Opening area of the roller cover is closed by means of the cover element.

The roller cover can advantageously be completely separated from the housing of the wet cleaning device, as a result of which the wiping device and / or the entire functional unit are also separated from the wet cleaning device. In addition, the stripping device or Functional unit can of course also be separated from the roller cover.

It is proposed that the cover element have an operative connection with a displacement drive of the scraper device and / or the functional unit, such that the scraper device and / or the functional unit can be displaced onto the cleaning roller when the cover element is displaced in the direction of a position closing the roller cover. As a result, for example, the displacements of the cover element and the stripping device / functional unit required for regeneration operation of the wet cleaning device are carried out before performing the regeneration operation, in particular at the same time, namely for on the one hand closing the roller cover by means of the cover element and on the other hand moving the stripping device in the direction of the cleaning roller . The user of the wet cleaning device therefore does not have to operate several actuating devices or switches before carrying out a regeneration operation. Rather, closing the roller cover causes the stripping device / functional unit to be displaced, or vice versa. The cover element and the stripping device or the functional unit are advantageously connected to one another via a gear, for example via coupled gear wheels.

It is also proposed that the stripping device opens into a disposal channel for draining the liquid into a liquid container. The stripping device is assigned, for example, a liquid collection area for the liquid removed from the cleaning roller by means of the stripping device, which directly adjoins the disposal channel for discharging the liquid into the liquid container. The liquid stripped or flung off by the cleaning roller and / or stripped or thrown off dirt can thus directly enter the disposal channel without being flung around within the roller cover or the like.

Furthermore, it is proposed that the humidification device, in particular the common functional unit, have a distribution device with a plurality of outlet openings and / or a liquid supply line for supplying the humidification device with liquid. The humidifier is used to provide and distribute liquid. The distribution of the liquid over the length of the cleaning roller is advantageously carried out through a plurality of outlet openings which enable the cleaning roller to be moistened almost homogeneously along its longitudinal extent. The distribution device can on the one hand have mere outlet openings or also nozzles for applying liquid to the surface of the cleaning roller. The liquid supplied to the moistening device via the liquid supply line is advantageously under pressure, so that the liquid can be sprayed onto the cleaning roller in small quantities and the cleaning roller material is not completely wetted. The liquid supply line can be connected to a liquid container of the wet cleaning device.

It is also proposed that the distribution device have an air guide device pointing in the direction of the cleaning roller for guiding air in the direction of a disposal channel for discharging the liquid into a collecting container. The air accelerated by the rotation of the cleaning roller inside the roller cover is directed through the air guide device in the direction of the disposal channel, so that removal of the liquid in the direction of the collecting container is supported. The air guiding device can advantageously have a plurality of air guiding ribs on the outside of the distribution device have which air guide ribs are aligned in the circumferential direction of the cleaning roller.

In addition to the previously described wet cleaning device, the invention also proposes a method for operating a wet cleaning device, in particular a previously explained wet cleaning device, wherein liquid and / or dirt is removed from a cleaning roller of the wet cleaning device during regeneration operation, with a wiping device which can be displaced relative to the cleaning roller for regeneration of the cleaning roller is placed on the cleaning roller, the cleaning roller is accelerated compared to a normal speed during a wiping operation of the wet cleaning device and liquid and / or dirt thrown off the cleaning roller and / or liquid and / or dirt released by the wiping device is collected and in one Collection container is passed.

Furthermore, a method for operating a wet cleaning device is proposed, liquid being applied to a rotatable cleaning roller by means of a moistening device, a wiping device which can be displaced relative to the cleaning roller being displaced onto the cleaning roller for moistening the cleaning roller, the wiping device thus being removed from the cleaning roller is spaced apart so that the stripping device touches only an end portion of the fibers of a cleaning covering of the cleaning roller, the stripping device conducting liquid between the fibers when the cleaning roller rotates.

In particular, the regeneration operation of the wet cleaning device includes accelerating the cleaning roller, placing the scraper device on the cleaning roller, wiping off dirt and / or liquid by means of the scraper device and a radial throwing off of liquid and / or dirt from the cleaning roller, collecting the liquid and the dirt as well as discharging into a disposal channel for discharging the liquid or the dirt into a collecting container.

For adequate moistening of the cleaning roller, for example before a wiping operation, the liquid supply or liquid distribution functions in such a way that the stripping device, in particular the functional unit, is brought to the cleaning roller in such a way that the stripping device just touches the fibers of a cleaning coating on the cleaning roller. The speed of the cleaning roller is slowed down compared to the usual wiping operation, while the liquid passes through the functional unit, in particular a distribution device, to a plurality of outlet openings and from there to the surface of the cleaning roller. The stripping device presses the liquid between the fibers of the cleaning roller, the cleaning roller advantageously being moistened piece by piece in the circumferential direction during one or more complete revolutions. After moistening of the cleaning roller, the stripping device or the functional unit is spaced further from the cleaning roller, so that the cleaning roller runs freely. This can be followed, for example, by wiping the wet cleaning device.

Basically, in the sense of the invention, wet cleaning devices are to be understood as all those devices which can exclusively or, among other things, perform wet cleaning. These include, on the one hand, the hand-held and automatically movable wet cleaning devices, in particular also cleaning robots, and, on the other hand, combined dry and wet cleaning devices, which are both wet cleaning and dry cleaning can perform. In addition to conventional floor cleaning devices for cleaning a floor, wet cleaning devices for cleaning floor surfaces are also meant within the meaning of the invention. These include, for example, devices for cleaning windows and the like.

Brief description of the drawings

Fig. 1

ein erfindungsgemäßes Feuchtreinigungsgerät,

Fig. 2

einen Teilbereich des Feuchtreinigungsgerätes mit einer erfindungsgemäßen Funktionseinheit in einer perspektivischen aufgebrochenen Ansicht,

Fig. 3

einen Querschnitt durch den Teilbereich des Feuchtreinigungsgerätes gemäß Figur 2,

Fig. 4

die Funktionseinheit in einer vergrößerten Ansicht,

Fig. 5

den Teilbereich des Feuchtreinigungsgerätes gemäß Figur 3 mit zu der Reinigungswalze hin verlagerter Funktionseinheit,

Fig. 6

eine Reinigungswalze mit einem textilen Reinigungsbelag bei Kontakt mit einer Abstreifeinrichtung der Funktionseinheit,

Fig. 7

eine perspektivische Ansicht in eine Walzenabdeckung mit einer Funktionseinheit,

Fig. 8

ein Lager der Funktionseinheit,

Fig. 9

eine Stelleinrichtung für die Funktionseinheit,

Fig. 10

eine Draufsicht auf die Funktionseinheit,

Fig. 11

eine Draufsicht auf die Funktionseinheit mit aufgebrochen dargestellter Flüssigkeitszuleitung,

Fig. 12

eine Draufsicht auf die Funktionseinheit mit aufgebrochen dargestellter Verteileinrichtung.

The invention is explained in more detail below on the basis of exemplary embodiments. Show it:

Fig. 1

an inventive wet cleaning device,

Fig. 2

a partial area of the wet cleaning device with a functional unit according to the invention in a perspective broken view,

Fig. 3

a cross section through the portion of the wet cleaning device according Figure 2 ,

Fig. 4

the functional unit in an enlarged view,

Fig. 5

the section of the wet cleaning device according to Figure 3 with the functional unit shifted towards the cleaning roller,

Fig. 6

a cleaning roller with a textile cleaning covering on contact with a stripping device of the functional unit,

Fig. 7

1 shows a perspective view of a roller cover with a functional unit,

Fig. 8

a bearing of the functional unit,

Fig. 9

an actuating device for the functional unit,

Fig. 10

a plan view of the functional unit,

Fig. 11

2 shows a top view of the functional unit with the liquid feed line shown broken away,

Fig. 12

a plan view of the functional unit with the distribution device shown broken.

Description of the embodiments

Figure 1 shows a wet cleaning device 1, which is designed here as a hand-held wet cleaning device 1 with a base unit 20 and an attachment device 21. The front attachment 21 is detachably held on the base unit 20. The base device 20 also has a handle 22, which is designed here, for example, to be telescopic, so that a user of the wet cleaning device 1 can adapt the length of the handle 22 to his body size. A handle 23 is also arranged on the handle 22, on which the user can guide the wet cleaning device 1 during a normal wiping operation, ie slide it over a surface to be cleaned. During the wiping operation, the user usually guides the wet cleaning device 1 in opposite directions of movement r over the surface to be cleaned. He alternately pushes the wet cleaning device 1 away from him or pulls it towards himself.

The front attachment 21 has a housing 8 in which a cleaning roller 2 is held. A filler neck 19 is arranged on the housing 8, through which liquid is poured into a liquid tank (not shown) can be. The water stored in the liquid tank serves for the external moistening of the cleaning roller 2.

The cleaning roller 2 is mounted rotatably about a roller axis 3 within the housing 8. During a wiping operation, the cleaning roller 2 rotates about the roller axis 3, so that the peripheral surface of the cleaning roller 2 continuously rolls on a surface to be cleaned. The cleaning roller 2 is usually wrapped with a cleaning covering, optionally with the interposition of an additional liquid-storing sponge body. The cleaning surface here is, for example, a textile cleaning cloth, between whose fibers liquid can also be absorbed.

During the wiping operation, dirt is continuously deposited on the cleaning roller 2, i. H. the cleaning surface. It may therefore be necessary to regenerate the cleaning roller 2 after a certain period of operation, wherein dirt and contaminated liquid are removed from the cleaning roller 2 during a regeneration operation.

Figure 2 shows a partial area of the housing 8 of the front attachment 21, in which the cleaning roller 2 is held rotatably about the roller axis 3. For the sake of clarity, the partial area of the housing 8 is shown broken away, so that the internal features can be seen. A roller cover 12 is arranged on the housing 8 and surrounds the cleaning roller 2 semicircularly at least over an angular range of approximately 180 degrees. The roller cover 12 can be removed from the housing 8 of the wet cleaning device 1, so that optimum accessibility, for example for maintenance, is provided. The roller cover 12 points with respect to the opposite circumferential side of the cleaning roller 2-in Figure 2 viewed from below - an opening area 13 through which the cleaning roller 2 can come into contact with the surface to be cleaned during a normal wiping operation. During a regeneration operation, the cleaning roller 2 is moved into the housing 8 and the roller cover 12 and the opening area 13 is closed with a cover element 11, so that the cleaning roller 2 is completely encapsulated in the circumferential direction.

In the area enclosed by the roller cover 12, a functional unit 6 is arranged, which has a moistening device 4 and a stripping device 5. The functional unit 6 is mounted in the housing 8 so as to be pivotable about a pivot axis 7, so that it can be pivoted relative to the surface of the cleaning roller 2, i. H. either towards the cleaning roller 2 or away from the cleaning roller 2. In addition, the functional unit 6 is assigned a displacement drive 10, here a gearwheel as part of a transmission, via which the entire functional unit 6 can also be removed from the cleaning roller 2, in particular for a wiping operation of the wet cleaning device 1, in which there is a sufficient distance between the cleaning roller 2 and the functional unit 6 is required to ensure a completely free running of the cleaning roller 2. A cover drive 24, which interacts with the displacement drive 10, serves to move the cover element 11.

The moistening device 4 serves to moisten the cleaning roller 2. The moistening device 4 has in detail a liquid feed line 17, a distribution device 15 and a plurality of outlet openings 16 (see Figure 7 ) on. The liquid supply line 17 is used to supply liquid from a liquid container of the wet cleaning device 1 to the distribution device 15. The distribution device 15 is - just like the whole Functional unit 6 and thus also the moistening device 4 - formed along the entire longitudinal extent of the cleaning roller 2. The distribution device 15 essentially forms a liquid channel running along the longitudinal extent of the cleaning roller 2, the channel wall of which has the plurality of outlet openings 16 for the discharge of liquid onto the cleaning roller 2. The liquid is advantageously pumped from the liquid container into the liquid feed line 17, so that the liquid in the distribution device 15 is under pressure and can be sprayed onto the surface of the cleaning roller 2 through the outlet openings 16. Depending on the distance between adjacent outlet openings 16, a fine spray mist, which is homogeneous over the longitudinal extent of the cleaning roller 2, can result, which leads to a uniform moistening of the cleaning roller 2. The outlet openings 16 are arranged in a partial area of the distribution device 15 which is directly adjacent to the cleaning roller 2, namely in the Figure 2 at the top right of the functional unit 6, above the stripping device 5.

In a position placed on the cleaning roller 2, the wiper device 5 can mechanically wipe off liquid and dirt from the surface of the cleaning roller 2 during a regeneration operation of the wet cleaning device 1. The stripping device 5 is also formed over the entire length of the cleaning roller 2, so that it can scrape liquid and dirt from the cleaning roller 2 over the entire surface. The rotation of the cleaning roller 2 results in a complete cleaning of the circumferential surface of the cleaning roller 2. The liquid wiped off the cleaning roller 2 enters a disposal channel 14 which is arranged in the drawing below the wiping device 5 and which, for example, opens into a collecting container (not shown). The removal of the liquid through or into the disposal channel 14 is arranged on the functional unit 6, here on the distribution device 15 Air guiding device 18 supports, which has a plurality of air guiding ribs, which point in the circumferential direction of the cleaning roller 2. The air accelerated by the rotation of the cleaning roller 2 is directed in the direction of the disposal channel 14 by means of the air guide device 18.

The functional unit 6 is mounted on the one hand by means of a bearing 26 and on the other hand by means of an actuating device 9 in the housing 8. The bearing 26 additionally connects the liquid supply line 17 to a liquid supply to the wet cleaning device 1. The actuating device 9 serves to press the functional unit 6 against the cleaning roller 2. The actuating device 9 has, as later in FIG Figure 9 shown, a spring 25 for pressing the functional unit 6, in particular the stripping device 5, onto the surface of the cleaning roller 2.

Figure 3 shows a cross section of the in Figure 2 The section of the front attachment 21 shown can be seen from the roller cover 12 arranged on the housing 8, in which the functional unit 6 can be removed. The opening area 13 of the roller cover 12 pointing in the direction of a surface to be cleaned is opened here, ie released by the displaceable cover element 11. The cover element 11 can be pivoted into the opening area 13 or out of the opening area 13 of the roller cover 12 by means of the cover drive 24. This cover drive 24 is coupled to the displacement drive 10 for the functional unit 6, so that at the same time as the cover element 11 is displaced into the opening area 13, the functional unit 6 is moved to the cleaning roller 2. The functional unit 6 is pivotally mounted in the roller cover 12 by means of the pivot axis 7.

Figure 4 shows the functional unit 6 in an enlarged view with the moistening device 4, the stripping device 5 and the disposal channel 14 for removing the liquid collected by the stripping device 5.

Figure 5 shows the partial area of the front attachment 21 according to Figure 3 with the functional unit 6 pivoted towards the cleaning roller 2 and the opening area 13 closed by the cover element 11. This corresponds to the position of the functional unit 6 during regeneration operation of the cleaning roller 2. The cleaning roller 2 is completely encased in the circumferential direction by the roller cover 12 and the covering element 11.

Figure 6 shows an enlarged portion of the Figure 5 . The functional unit 6 rests with the stripping device 5 on the cleaning surface of the cleaning roller 2. The cleaning covering is an example of a textile covering with essentially radially projecting fibers. The fibers are not drawn to scale relative to the size of the cleaning roller 2 - for better visibility. The fibers have a length of 1 mm to 10 mm, for example. In the peripheral areas of the cleaning roller 2, on which the stripping device 5 currently rests, the fibers are bent and pressed against the cleaning roller 2. The cleaning roller 2 rotates counterclockwise in the figure. After passing the stripping device 5, the fibers are straightened up again, since the stripping device 5 no longer lies against this circumferential region. During the return movement from the depressed to the upright position, liquid and / or dirt is thrown off the fibers and fed directly to the disposal channel 14.

The Figure 7 shows the in Figure 2 roller cover 12 shown with the functional unit 6 in a view from the bottom below, ie viewed from a point on the surface of the cleaning roller 2. Among other things, the bearing 26 and the actuating device 9 are shown, via which the functional unit 6 is held in the roller cover 12 about a pivot axis 7. The bearing 26 is connected to the liquid supply line 17, which opens into the distribution device 15 of the moistening device 4. Liquid can thus get from a liquid tank through the bearing 26 into the liquid feed line 17 and from there into the distribution device 15. The liquid can then escape through the outlet openings 16 of the distribution device 15 in the direction of the cleaning roller 2.

Under the outlet openings 16 (based on the representation according to Figure 7 ) the stripping device 5 is arranged. The scraper device 5 presses against the surface of the cleaning roller 2 during a regeneration operation of the wet cleaning device 1 and thereby strips off liquid or dirt from the cleaning roller 2. The liquid or the dirt can flow directly into the disposal channel 14 adjacent to the stripping device 5 and into, for example, a collecting container of the wet cleaning device 1.

The functional unit 6 can be removed from the roller cover 12 for the purpose of maintenance or cleaning. After cleaning the functional unit 6, for example, it can then be reinserted into the roller cover 2 by inserting the pivot axis 7 of the functional unit 6 into the bearing 26, which is designed as a rotary feedthrough. The functional unit 6 is then pivoted, for example, around the bearing 26, so that the actuating device 9 can also be introduced into the roller cover 12 as a counter bearing. The actuating device 9 is then locked. The roller cover 12 can then be connected to the housing 8 of the front attachment 21, the functional unit 6 being advantageously shifted into a position corresponding to a wiping operation of the wet cleaning device 1. The disassembly of the functional unit 6 from the roller cover 12 is carried out accordingly in the reverse order. First, the roller cover 12 is separated from the housing 8 of the attachment 21. The actuating device 9 is then unlocked and the functional unit 6 is pivoted out. The pivot axis 7 of the functional unit 6 can then be pulled out of the bearing 26.

Figure 8 shows the bearing 26 for receiving the pivot axis 7 of the functional unit 6. The bearing 26 provides a rotary feedthrough for the liquid feed line 17 and has sealing elements 27 for sealing, here for example a shaft sealing ring and an O-ring. As a result, a liquid line of the wet cleaning device 1 can be connected in a liquid-tight manner to the liquid line 17 pivoted with the functional unit 6.

Figure 9 shows the actuating device 9 which is arranged on the end side of the pivot axis 7 opposite the bearing 26. The actuating device 9 has a spring 25 which exerts a restoring force on the end region of the functional unit 6 shown. The restoring force of the spring 25 acts in the direction of the cleaning roller 2, so that the spring 25 tries to pivot the functional unit 6 in the direction of the cleaning roller 2.

The Figures 10 to 12 show the functional unit 6 in a view from above, the Figures 11 and 12 are shown broken up in different levels or partial areas.

Figure 10 shows in particular the distribution device 15, which has the air guide device 18 with a plurality of air guide ribs on the upper side shown. Disposal channel 14 is located below distribution device 15, through which liquid or stripped dirt stripped from cleaning roller 2 can reach a collecting container by means of stripping device 5. This is supported by the air guided in the direction of the disposal duct 14 by means of the air guide device 18 and swirled by the rotation of the cleaning roller 2. The actuating device 9 and a partial region of the liquid supply line 17 can also be seen.

Figure 11 shows the course of the liquid supply line 17 within the functional unit 6 to the distribution device 15 of the humidification device 4.

Figure 12 shows a broken view in the area of the distribution device 15, the ventilation device 18 being partially cut open. The outlet openings 16 of the distribution device 15 can be seen, through which the liquid from the moistening device 4 can be sprayed onto the cleaning roller 2.

The functional unit 6 can now be used according to the invention both for moistening the cleaning roller 2 before wiping the wet cleaning device and for regenerating the cleaning roller 2.

During a wiping operation of the wet cleaning device 1, the functional unit 6 is usually completely spaced from the cleaning roller 2 by means of the displacement drive 10, so that there is no contact between the stripping device 5 of the functional unit 6 and the surface of the cleaning roller 2. The previously moistened cleaning roller 2 can thus move freely over a surface to be cleaned. In the course of the wiping operation, dirt removed from the surface to be cleaned accumulates on the surface of the cleaning roller 2, in particular in a cleaning surface of the cleaning roller 2, so that after a certain operating time regeneration of the cleaning roller 2 is recommended in order to achieve the best possible wiping result .

For the regeneration operation, the opening area 13 of the roller cover 12 is closed by means of the cover element 11, so that there is a complete housing for the cleaning roller 2 in the circumferential direction. The cover element 11 is displaced via the cover drive 24. Since the cover drive 24 is operatively connected to the displacement drive 10 of the functional unit 6, the functional unit 6 is also pivoted toward the cleaning roller 2 when the cover element 11 is displaced until the stripping device 5 against the cleaning roller 2 presses, the spring 25 of the actuating device 9 additionally providing the necessary contact pressure and creating tolerance compensation for the rotating cleaning roller 2. The cleaning roller 2 is greatly accelerated, that is, rotated at a speed which is higher than the speed during the wiping operation of the wet cleaning device 1. During the rotation of the cleaning roller 2, liquid and / or dirt is stripped off the cleaning roller 2 and / or by the cleaning roller 2 hurled. The liquid and / or the dirt reach the disposal channel 14 arranged directly next to the stripping device 5 and flow due to the acting gravity from the functional device 6 in the direction of a collecting container. The air accelerated by the rotation of the cleaning roller 2 is additionally guided through the air guide ribs of the air guide device 18 in the direction of the disposal channel 14 and thereby supports the removal of the liquid or the dirt.

For a renewed water supply and water distribution on the surface of the cleaning roller 2, the functional unit 6 is moved so far towards the cleaning roller 2 that the stripping device 5 just just touches the fibers of the cleaning covering of the cleaning roller 2, for example with an overlap area of maximum 1 mm. The cleaning roller 2 is rotated at a speed which is reduced compared to the speed during a wiping operation. Then liquid, optionally with the addition of a cleaning additive, is sprayed onto the cleaning roller 2, the liquid being under pressure within the moistening device 4 and being sprayed out of the outlet openings 16. The moistening device sprays onto the surface of the cleaning roller 2 from a distance of 5 mm to 10 mm, for example. The liquid wets the surface of the cleaning roller 2, the stripping device 5 pressing the liquid between the adjacent fibers of the cleaning coating of the cleaning roller 2. The liquid is applied piece by piece during the continued rotation of the cleaning roller 2 within one or more complete rotations of the cleaning roller 2 about the roller axis 3 and distributed until the cleaning roller 2 is completely moistened. The functional unit 6 is then removed from the cleaning roller 2, the roller cover 12 is opened and the cleaning roller 2 prepared for a wiping operation is lowered again, for example, onto the surface to be cleaned. During the subsequent wiping operation, the cleaning roller 2 then picks up dirt again from the surface to be cleaned. <b> List of reference symbols </b> 1 Moist cleaning device 26 camp 2nd Cleaning roller 27 Sealing element 3rd Roller axis 4th Humidifier 5 Scraper 6 Functional unit r Direction of movement 7 Swivel axis 8th casing 9 Actuator 10th Displacement drive 11 Cover element 12th Roller cover 13 Opening area 14 Disposal channel 15 Distribution device 16 Outlet opening 17th Liquid supply 18th Air control device 19th Filler neck 20 Base unit 21 Front attachment 22 stalk 23 Handle 24th Cover drive 25th feather

Claims (10)

1. A wet-cleaning appliance (1), particularly a wet mop, with a cleaning roller (2) that can be rotated about a roller axis (3) and with a wetting device (4) for applying a liquid to the cleaning roller (2), characterized in that the wet-cleaning appliance (1) comprises a wiper device (5), particularly a wiper lip, which can be displaced onto the cleaning roller (2) in order to assist in removing liquid and/or dirt from the cleaning roller (2) and/or to assist in applying liquid to the cleaning roller (2), wherein the wetting device (4) and the wiper device (5) are parts of a common functional unit (6), which can be displaced as a whole relative to the cleaning roller (2), such that the functional unit (6) can be displaced as a whole from a first operating position into a second operating position and vice versa.
2. The wet-cleaning appliance (1) according to claim 1, characterized in that the wiper device (5) and/or the functional unit (6) are mounted on a housing (8) of the wet-cleaning appliance (1) so as to be pivotable about a pivoting axis (7) arranged parallel to the cleaning roller (2), wherein the wiper device (5) and/or the functional unit (6) are particularly subjected to a spring force acting in the direction of the cleaning roller (2).
3. The wet-cleaning appliance (1) according to one of the preceding claims, characterized in that a displacement drive (10) is assigned to the wiper device (5) and/or the functional unit (6) and designed for displacing the wiper device (5) and/or the functional unit (6) relative to the cleaning roller (2).
4. The wet-cleaning appliance (1) according to one of the preceding claims, characterized in that the wet-cleaning appliance (1) comprises a displaceable cover element (11) for completing a roller cover (12), which encloses the cleaning roller (2) and, in particular, also the wetting device (4) and the wiper device (5), in a shape-corresponding manner in the circumferential direction of the cleaning roller (2), wherein the cover element (11) is designed for selectively uncovering and/or closing an opening region (13) of the roller cover (12).
5. The wet-cleaning appliance (1) according to claim 4, characterized in that the cover element (11) is functionally connected to a displacement drive (10) of the wiper device (5) and/or the functional unit (6) in such a way that the wiper device (5) and/or the functional unit (6) can be displaced toward the cleaning roller (12) during a displacement of the cover element (11) in the direction of a position, in which it closes the roller cover(12).
6. The wet-cleaning appliance (1) according to one of the preceding claims, characterized in that the wiper device (5) empties into a disposal channel (14) for discharging the liquid into a liquid container.
7. The wet-cleaning appliance (1) according to one of the preceding claims, characterized in that the wetting device (4), particularly the common functional unit (6), comprises a distribution device (15) with a plurality of outlet openings (16) and/or a liquid supply line (17) for supplying the wetting device (4) with liquid.
8. The wet-cleaning appliance (1) according to claim 7, characterized in that the distribution device (15) comprises an air conduction device (18), which is oriented in the direction of the cleaning roller (2), in order to conduct air in the direction of a disposal channel (14) and to thereby discharge the liquid into a collection container.
9. A method for operating a wet-cleaning appliance (1), particularly a wet mop, in which liquid and/or dirt are removed from a cleaning roller (2) of the wet-cleaning appliance (1) during a regeneration mode, characterized in that a wiper device (5), which can be displaced relative to the cleaning roller (2), is placed onto the cleaning roller (2) in order to regenerate the cleaning roller (2), wherein the cleaning roller (2) is accelerated in comparison with a normal rotational speed during a mopping mode of the wet-cleaning appliance (1) and liquid and/or dirt, which is spun off the cleaning roller (2), and/or liquid and/or dirt, which is removed by the wiper device (5), is collected and transported into a collection container.
10. A method for operating a wet-cleaning appliance (1), particularly the method according to claim 9, in which liquid is applied to a rotatable cleaning roller (2) by means of a wetting device (4), characterized in that a wiper device (5), which can be displaced relative to the cleaning roller (2), is displaced toward the cleaning roller (2) in order to wet the cleaning roller (2), wherein the wiper device (5) is spaced apart from the cleaning roller (2) such that the wiper device (5) only contacts a partial end region of the fibers of a cleaning layer of the cleaning roller (2), and wherein the wiper device (5) conducts liquid between the fibers during the rotation of the cleaning roller (2).

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