DE102018221058A1 - Floor cleaning device - Google Patents

Abstract

The invention relates to a floor cleaning device with recovery of cleaning liquid. Cleaning liquid is fed to a cleaning tool via a discharge line into which at least one filter device is connected. The floor cleaning device comprises a rinsing line, via which the at least one filter device can be rinsed through the discharge line against the direction of flow and freed of adhering dirt particles.

Description

The present invention relates to a floor cleaning device with recovery of cleaning liquid, comprising a container for storing a cleaning liquid, a cleaning tool, a discharge line via which the container is in flow connection with the cleaning tool, a filter device connected into the discharge line and a dirt collecting device for holding dirty cleaning liquid the bottom surface and transfer into the container.

The EP 2 511 016 B1 describes such a floor cleaning device. When starting up, a bypass line branching off the discharge line and opening into the container is released. This is used to prepare the filter device for operation (priming mode). The start-up time required for this of the floor cleaning device proves to be disadvantageous for the user.

A floor cleaning device with recovery of cleaning liquid is also in the WO 2015/106257 A1 described. A filter device, which works by means of precoat filtration, is connected to the discharge line. The washed-on filter material comes from a container upstream of the filter device and through which the cleaning liquid flows. Filtered cleaning liquid is transferred to another container for temporary storage, from which it is fed to the cleaning tool.

The EP 3 130 271 A1 describes a floor cleaning device with recovery of cleaning liquid, in which a filter device in the form of a strainer basket is arranged in the container for cleaning liquid itself. The sieve basket can be removed and cleaned through an opening.

The object of the present invention is to provide a maintenance-friendly floor cleaning device with recovery of cleaning liquid.

• - einen Behälter zum Bevorraten einer Reinigungsflüssigkeit;
• - ein Reinigungswerkzeug zum Abreinigen der Bodenfläche;
• - eine Abgabeleitung, über die der Behälter in einem Reinigungsbetrieb mit dem Reinigungswerkzeug in Strömungsverbindung steht;
• - mindestens eine in die Abgabeleitung geschaltete Filtereinrichtung mit einem Einlass, einem Auslass und einem durchströmbaren Filterelement;
• - eine Ventileinrichtung zum Freigeben und Sperren der Abgabeleitung;
• - vorzugsweise eine mit der Ventileinrichtung gekoppelte Steuereinrichtung;
• - eine Schmutzaufnahmeeinrichtung zum Aufnehmen verschmutzter Reinigungsflüssigkeit und Überführen in den Behälter;
• - eine Spülleitung mit einem Anschlusselement zum Anschließen einer externen Versorgungsleitung, wobei die mindestens eine Filtereinrichtung mit der Spülleitung strömungsverbunden ist und das Filterelement in einem Spülbetrieb entgegen der Strömungsrichtung im Reinigungsbetrieb durchströmbar ist; und
• - eine vorzugsweise mit der Steuereinrichtung gekoppelte Ventileinrichtung zum Freigeben und Sperren der Spülleitung.

This object is achieved by a floor cleaning device according to the invention with recovery of cleaning liquid, comprising:

• - A container for storing a cleaning liquid;
• - a cleaning tool for cleaning the floor surface;
• - A discharge line via which the container is in flow connection with the cleaning tool in a cleaning operation;
• - At least one filter device connected to the discharge line with an inlet, an outlet and a filter element through which flow can pass;
• - A valve device for releasing and blocking the discharge line;
• - preferably a control device coupled to the valve device;
• - A dirt pick-up device for picking up dirty cleaning liquid and transferring it into the container;
• a flushing line with a connection element for connecting an external supply line, the at least one filter device being connected to the flow with the flushing line and the filter element being able to flow through in a flushing operation against the flow direction in the cleaning operation; and
• - A valve device, preferably coupled to the control device, for releasing and blocking the flushing line.

In the cleaning operation of the floor cleaning device according to the invention, cleaning liquid flows through the discharge line, is cleaned on the filter element of the at least one filter device and reaches the cleaning tool. Dirty cleaning liquid (dirty liquid) is picked up from the bottom surface by the dirt collecting device and transferred into the container. A control device can preferably selectively block and release the delivery line via the valve device. Maintenance and thus also handling-friendly there is the possibility of cleaning the at least one filter device. Cleaning, which will be discussed below, can be carried out, for example, after a predetermined or predeterminable period of time has elapsed or when the at least one filter device is detected or expected to be dirty. The user can connect an external supply line to the connection element in a maintenance-friendly manner. A standardized connecting element is advantageously provided for this, for example a connecting nipple or a connecting socket for connecting a supply hose. The flushing line can be released, preferably by the control device, by switching the at least one valve device assigned to the flushing line. The rinsing liquid passes through the rinsing line to the at least one filter device. The direction of flow through the filter element in the rinsing mode is opposite to the direction of flow of the cleaning liquid in the cleaning mode of the floor cleaning device. Dirt particles adhering to the filter element can thereby be removed and removed. The discharge line can meanwhile via the this associated valve device can be blocked so that no cleaning liquid reaches the cleaning tool. A cleaning of the at least one filter device can be carried out particularly easily in this way. It is advisable, for example, to rinse the at least one filter device if cleaning liquid has to be changed anyway and the user goes with the floor cleaning device to a discharge station for cleaning liquid, where there is preferably a filling station for the rinsing liquid.

In particular, water can preferably be used as the cleaning liquid and the rinsing liquid.

Due to the possibility of recovering cleaning liquid, the floor cleaning device can be structurally considerably simplified with regard to storage containers for cleaning liquid.

For example, it is favorable if the floor cleaning device is free of another container for storing cleaning liquid cleaned via the at least one filter device and / or free of another dirty liquid container. Such an additional storage container, such as the one in the WO 2015/106257 A1 Floor cleaning device described, leads to an unnecessarily complicated construction and associated higher manufacturing costs for the floor cleaning device. In the WO 2015/106257 A1 Filtered cleaning liquid from the further container is used to backwash the washed-up filter material from the at least one filter device, the previously complexly filtered cleaning liquid being fed back into the (dirt) container into which the dirty cleaning liquid absorbed by the floor surface is passed. As a result, the washed-on filter material is merely moved back and forth between the storage container therefor and the at least one filter device.

In contrast, the filter element in the floor cleaning device according to the invention can be cleaned with fresh washing liquid from the washing line. Dissolved contaminants are preferably drained off via a drain line, as explained below, before the floor cleaning device is put into operation again.

The at least one filter device is preferably connected to the flushing line. The rinsing line can in particular comprise a section through which the rinsing liquid flows and a section through which the detached contaminants can be removed.

The connection element of the flushing line is preferably arranged on the outside on a housing of the floor cleaning device, for example on a rear side of the floor cleaning device. The supply line can be connected in a user-friendly manner via the connection element on the outside.

The flushing line is expediently connected to the outlet of the at least one filter device. A separate connection element for the flushing line can thus be saved. Such a construction proves to be advantageous, for example, if the rinsing line is formed at least in sections by the delivery line.

The flushing line advantageously opens into the container. A section of the flushing line downstream of the at least one filter device, based on the direction of flow of the flushing liquid, provides, for example, a flow connection from the filter device to the container. Dirt particles that have been detached from the filter element can get back into the container by rinsing, from which they can preferably be drained off via a drain line.

It can be provided that the flushing line comprises or forms an outlet. For example, the flushing line downstream of the at least one filter device can comprise or form an outlet which can be closed and released by means of a valve device. The washing liquid carrying the contamination can be fed to an outlet and disposed of via the outlet.

It is advantageous if a common valve device is provided for the discharge line and the rinsing line, the rinsing line comprising a supply section upstream of the valve device, and if the discharge line forms the rinsing line between the valve device and an outlet of the at least one filter device. This enables a structurally simple configuration of the floor cleaning device, in which a separate flushing line can largely be saved. The supply line can be connected to the connection element on the supply section. There are preferably no separate valve devices, but a common valve device via which the discharge line can be blocked and at the same time the flow can be released from the feed section. A section from the valve device to the at least one filter device is formed by the discharge line.

In a preferred embodiment it can be provided that separate Valve devices for the flushing line and the discharge line are provided. For example, a valve device is connected to a supply section of the flushing line, which branches into the discharge line, the valve device being connected downstream of this branch into the discharge line in the discharge line. In this way, the discharge line can form a section of the flushing line from the branching to the outlet of the at least one filter device.

It proves to be advantageous if a section of the delivery line arranged between the container and the inlet of the at least one filter device at least partially forms the flushing line. This enables a structurally simple configuration of the floor cleaning device. For example, the discharge line has a section through which cleaning liquid flows from the container to the inlet of the at least one filter device in cleaning operation. In the rinsing mode, it can be provided that at least a part of this section of the delivery line can flow through the rinsing liquid and partially forms the rinsing line and can thus be used both in the cleaning mode and in the rinsing mode.

The at least one filter device comprises the filter element, the inlet and the outlet. It goes without saying that more than one filter element, more than one inlet and / or more than one outlet can be provided.

The at least one filter device preferably has, for example formed by a housing, a receiving space in which the filter element is arranged. Cleaning liquid can flow into the receiving space via the inlet, flow through the filter element in cleaning operation and flow into the discharge line through the outlet.

In the rinsing mode, rinsing liquid, for example through the outlet, can get into the filter device, flow through the filter element in the opposite direction to the cleaning mode, and detach adhering dirt. For example, the dirty rinsing liquid gets into the receiving space.

In a preferred embodiment it is provided that the at least one filter device comprises or forms a rinsing outlet, which is connected to the flow with the rinsing line, for removing dirt detached in the rinsing mode from the at least one filter device. The washing liquid flowing through the filter element in the washing operation can be discharged from the at least one filter device via the washing outlet. For example, a section of the flush line is connected to the flush outlet. The rinsing outlet is arranged, for example, on a housing of the filter device.

For example, it can be provided that the inlet of the at least one filter device forms the flushing outlet. The inlet can have different functions in the cleaning mode and in the flushing mode. In cleaning operation, cleaning fluid to be filtered enters through the inlet. In flushing operation, soiling liquid that is carried along can be removed via the inlet. In particular, in the latter case, a section of the discharge line at least partially forms the flushing line.

It can be provided that a flushing outlet separate from the inlet is provided. For example, a section of the flushing line is connected to the separate flushing outlet, through which dirt can be removed.

It is advantageously provided that the floor cleaning device comprises a pump unit connected between the container and the valve device in the discharge line for increasing the pressure of the cleaning liquid through the discharge line.

The pump unit is advantageously connected upstream of the at least one filter device into the delivery line.

As already mentioned, a section of the discharge line between the container and the inlet can at least partially form the flushing line.

In a preferred embodiment of the floor cleaning device it can be provided that the discharge line only partially forms the rinsing line, a bypass section of the rinsing line bypassing the pump unit. For example, a section of the flushing line adjoins the inlet, which bypasses the pump unit via the bypass, branches into the discharge line and opens into the container.

In a preferred embodiment of the floor cleaning device according to the invention, it can be provided that the discharge line only partially forms the rinsing line, with a connecting section preceding the pump unit, in relation to the direction of flow in cleaning operation, branching into the discharge line. For example, a section of the flushing line is connected to the flushing outlet mentioned above, which branches into the discharge line and opens into the container.

A preferred embodiment of the floor cleaning device comprises a supply line which is flow-connected or flow-connectable to a flushing inlet of the at least one filter device. For example, a rinsing liquid can be supplied via the supply line. For example, a receiving space of the filter device, in which the filter element is received, can be supplied with rinsing liquid on the upstream side of the filter element, based on the direction of flow in cleaning operation. This gives, for example, the possibility of first detaching contaminants from the filter element by means of the rinsing liquid via the rinsing line. The flushing liquid flowing in via the feed line can remove the contaminants from the filter device via a section of the flushing line which is connected to the flow with the flushing outlet.

For example, it is provided that the floor cleaning device comprises a valve device, preferably coupled to the control device, for releasing and blocking the supply line.

Alternatively or additionally, it can be provided that the supply line comprises a connection element for connecting an external supply line.

It can be favorable if the supply line branches off from the flushing line. The connection element of the supply line mentioned above can be saved, for example, as a result. The supply line branching off from the flushing line is optionally enabled or blocked, for example, by means of the aforementioned valve device.

In a preferred embodiment of the floor cleaning device it is provided that the inlet of the at least one filter device forms the flushing inlet. It can be provided here that the feed line branches upstream of the inlet, based on the direction of flow in the cleaning operation, into the discharge line.

It can be provided that a flushing inlet separate from the inlet is provided, to which the feed line is connected. In this case, for example, the inlet of the filter device can act as a flushing outlet.

It is expedient if the floor cleaning device according to the invention is designed to perform the flushing operation, in which flushing liquid acts on the filter element through the flushing line, in order to detach dirt.

It is advantageous if the floor cleaning device is designed to block the rinsing line on the upstream side of the at least one filter device and to release the supply line in order to remove detached contaminants through a rinsing outlet of the at least one filter device and the rinsing line on the downstream side of the at least one filter device. The contaminants can be fed to the container or to an outlet, for example.

The above-mentioned steps of the flushing operation can, for example, be carried out alternately and repeatedly, with successive soiling being detached and being flushed out of the filter device. The respective time period can be predetermined or predeterminable or dependent on residual contamination.

In another advantageous embodiment, it can be provided that the floor cleaning device is designed to block the rinsing line on the upstream side of the at least one filter device, to activate the pump unit and to convey cleaning fluid from the container through the discharge line into the at least one filter device. Previously detached contaminants can be removed through a rinsing outlet of the at least one filter device and the rinsing line on the downstream side of the at least one filter device. Such a configuration makes it possible, for example, to save the supply line. After dirt has been detached from the filter element, cleaning liquid can be pumped out of the container through the discharge line into the filter device. The contaminants can be discharged through the flush outlet, for example into the container, or they can be led to a drain.

In the latter case, too, it can be provided that the two steps of the rinsing operation are carried out repeatedly. The respective time periods can be predetermined, predeterminable or dependent on residual contamination.

The discharge line advantageously comprises a discharge section on the downstream side of the valve device assigned to it and is connected via this to the cleaning tool.

In order to increase the cleaning performance, it is advantageously provided that the floor cleaning device comprises a container for storing a cleaning chemical which can be mixed with the cleaning liquid and which is connected to the flow via a supply line to the dispensing section.

A pump unit for feeding the cleaning chemical is advantageously connected into the feed line, for example in the form of a metering pump.

It can be provided that the floor cleaning device comprises two or more filter devices, which are preferably configured identically.

In this case, it is expedient if the delivery line branches into two or more segments, into each of which a filter device is connected, which segments combine downstream of the filter devices in the flow direction of the cleaning liquid.

In a corresponding manner, it can preferably be provided that the rinsing line branches into two or more segments, into each of which a filter device is connected, which segments combine downstream of the filter devices in the flow direction of the rinsing liquid.

It is advantageous if the floor cleaning device comprises a sensor device coupled to the control device, depending on the signal of which the control device can issue a message to the user on an information unit of the floor cleaning device.

The note includes, for example, a recommendation to replace or refill the cleaning liquid, for example if the cleaning liquid is used or contaminated, alternatively or additionally after a certain number of circulations of the cleaning liquid.

As an alternative or in addition, a note can preferably be provided to completely or partially clean or change the at least one filter device, for example if the volume flow through the discharge line is determined to be too low. For example, an indication can be provided to replace or clean the filter element.

As an alternative or in addition, a note can be provided that includes the remaining cleaning time using the floor cleaning device and / or the remaining cleaning area. For example, by means of the volume flow through the discharge line and taking into account the design of the cleaning tool, the control device can calculate how long it can still be cleaned (due to the consumption of cleaning fluid) and / or which cleaning surface can still be cleaned.

The sensor device can preferably comprise a pressure sensor in the delivery line, which is preferably connected upstream of the at least one filter device in the delivery line. If the pressure in the delivery line rises, in particular when a pump unit is used, the control device can deduce from this that the at least one filter device clogs up over the course of time and should preferably be cleaned.

As an alternative or in addition, the sensor device can comprise a volume flow sensor, which is preferably connected downstream of the at least one filter device in the discharge line. If the volume flow in the discharge line that can be detected by the volume flow sensor decreases, the control device can interpret this as an indication that the filter device should become clogged with dirt particles over the course of time and should be cleaned.

Alternatively or in addition, the sensor device can comprise a fill level sensor on the container with which the amount of cleaning liquid in the container can be determined. The level drops over time due to the consumption of cleaning fluid. The control device can preferably calculate when cleaning liquid should be refilled.

As an alternative or in addition, the sensor device can preferably have a timer for measuring operating times and / or intervals. For example, provision is made for the at least one filter device to be cleaned and / or for cleaning liquid to be refilled after a predetermined or predeterminable operating time.

It is advantageous if the floor cleaning device comprises an outlet line connected to an outlet of the container and a valve device for releasing and blocking the outlet line. In this way, dirty cleaning liquid can be drained from the container in a maintenance-friendly manner.

It can be provided that the valve device is coupled to the control device and / or can be actuated manually.

The drain line is advantageously a hose line which is arranged on the outside on a housing of the floor cleaning device. In order to make it easier for the user to drain the cleaning liquid, the hose line can thereby be aligned more easily relative to a drain.

It is expedient if the floor cleaning device comprises a filling line with a connection element for connecting an external supply line, which opens into the container. This makes it easier for a user to handle the floor cleaning device. The external supply line can be connected to the connection element. Via the filling line in the Container opens, fresh cleaning liquid is supplied to it.

At least one valve device coupled to the control device is preferably provided for releasing and blocking the filling line.

The connecting element is advantageously arranged on the outside of a housing of the floor cleaning device and can thereby be easily reached by the user.

It is expedient if the flushing line or the feed line mentioned above for the flushing operation at least partially forms the filling line. This considerably simplifies the design of the floor cleaning device. Separate lines for rinsing the at least one filter device and for filling the container are not required. For example, the filter element is first cleaned via the flushing line, and dirt particles are discharged into the container directly or using the supply line and are discharged from the latter. After the rinsing process, the container can be filled with fresh cleaning liquid when the drain line is closed.

It is advantageous if the floor cleaning device comprises a container rinsing device with at least one nozzle directed into the container and a supply line via which the at least one nozzle can be acted upon with rinsing liquid. In this way, a user-friendly cleaning of the interior of the container can be carried out. Flushing liquid is supplied to the at least one nozzle via the supply line. The rinsing liquid is sprayed, preferably against the inner walls of the container. Dirt particles can be removed and preferably discharged via a drain line on the container.

The at least one nozzle is preferably arranged on a ceiling wall of the container, which can be transferred from a closed position to an open position in order to release the interior.

It is expedient if the floor cleaning device comprises a valve device, preferably coupled to the control unit, for releasing and blocking the supply line. For example, the supply line is released during the flushing of the at least one filter device or afterwards in order to clean the container.

The supply line advantageously includes a connection element for connecting an external supply line. The connection element is advantageously arranged on the outside of a housing of the floor cleaning device.

It proves to be advantageous, for example, if the supply line branches off from the filling line or from the flushing line, in particular via a valve device connected to it. This facilitates the design of the floor cleaning device. It goes without saying that this valve device can be released for flushing the filter element of the at least one filter device.

Similarly, it can be provided that a filling line branches off from the flushing line, for example from the above-mentioned feed section, via a valve device connected to it. It goes without saying that this valve device can be released for flushing the at least one filter device.

If neither a feed line of the container rinsing device nor a filling line branches off from the rinsing line, the valve devices mentioned in the last two paragraphs are preferably omitted, in particular if the rinsing line is partially formed by the discharge line.

In a preferred embodiment of the floor cleaning device according to the invention, for example, a connection element for an external supply line is provided, which is arranged on a supply section of the flushing line. For example, the supply line of the container rinsing device branches off from a valve device connected into this. Following the feed section, the rinsing line is formed, for example, by the discharge line.

The floor cleaning device advantageously comprises a ventilation line, the inlet of which is connected to the at least one filter device, and a valve device, which is preferably coupled to the control device, for releasing and blocking the ventilation line. The at least one filter device can be vented via the vent line, for example after the rinsing process. In particular, the filter device can also be filled when or after filling the container, if this is provided via the flushing line, and the floor cleaning device can be prepared for operation. The ventilation can be carried out via the ventilation line.

The vent line advantageously opens into the container.

If two or more filter devices are present, it is advantageously provided that two or more segments of the ventilation line, each connected to a filter device and merging, are provided.

The floor cleaning device preferably comprises an operating device for the user, coupled to the control device, with an optical and / or acoustic notification unit. The control device can preferably provide instructions for guiding and / or informing the user on the information unit.

For example, an indication of a change in the cleaning liquid can be output.

For example, an indication of cleaning and / or replacement of the at least one filter device or a part thereof, for example the filter element, can be output.

For example, a notice regarding the emptying of the container can be issued via a drain line.

For example, a note regarding the connection of a supply line for rinsing the at least one filter device and / or for filling the container and / or for rinsing the container can be output.

For example, a note regarding status information about the floor cleaning device can be output.

• - Freigabe der Spülleitung zum Spülen der mindestens einen Filtereinrichtung;
• - Freigabe der Zufuhrleitung zum Abführen von Verschmutzungen aus der mindestens einen Filtereinrichtung;
• - Spülen des Behälters über die Zufuhrleitung der Behälterspüleinrichtung;
• - Befüllen des Behälters über die Befüllleitung;
• - Befüllen der mindestens einen Filtereinrichtung und/oder der Abgabeleitung mit Reinigungsflüssigkeit für die Inbetriebnahme, vorzugsweise unter Entlüftung der mindestens einen Filtereinrichtung über die Entlüftungsleitung.

Provision can advantageously be made for at least one notice with a request to the user for information to be provided, after confirmation by the user at least one of the following can be carried out:

• - Release of the rinsing line for rinsing the at least one filter device;
• - Release of the supply line for removing dirt from the at least one filter device;
• - Rinsing the container via the feed line of the container rinsing device;
• - filling the container via the filling line;
• - Filling the at least one filter device and / or the discharge line with cleaning liquid for commissioning, preferably with the at least one filter device vented via the vent line.

The notice includes, for example, a request that informs the user that after the confirmation, at least one of the above-mentioned processes is started. Several processes can advantageously be carried out automatically by the floor cleaning device according to a predefined or predefinable schedule.

For example, it is expedient to rinse the at least one filter device for a predetermined or predeterminable period of time and / or as a function of a signal from a dirt sensor coupled to the control device.

As an alternative or in addition, rinsing of the container is advantageous for a predetermined or predefinable period of time and / or depending on a signal from a dirt sensor coupled to the control device.

As an alternative or in addition, it is favorable to fill the container for a predetermined or predeterminable period of time and / or as a function of a signal from a fill level sensor arranged on the container and coupled to the control device.

The above-mentioned dirt sensor is advantageously arranged on the container in order to detect contamination of the cleaning liquid contained therein. If the cleaning liquid is recognized as sufficiently clean, the rinsing of the at least one filter device and / or the container can be ended, for example.

In a preferred embodiment, the floor cleaning device can have a filter device at an inlet of the container for dirt picked up by the floor surface. The filter device includes, for example, a sieve that retains coarse dirt.

Alternatively or additionally, the floor cleaning device preferably comprises a filter device at an outlet of the container, to which outlet the delivery line is connected. In particular, this can be a prefilter that has a coarser filtration property than the at least one filter device. It can be provided that the prefilter can also be backwashed via the flushing line and thereby cleaned.

The floor cleaning device can be designed, for example, as a wake-up device, as a stand-up device or as a ride-on device.

The floor cleaning device is preferably a scrubber drier.

• 1: eine schematische perspektivische Darstellung einer erfindungsgemäßen Bodenreinigungsvorrichtung;
• 2: ein Blockschaltbild der Bodenreinigungsvorrichtung aus 1;
• 3: eine vergrößerte Detaildarstellung entsprechend Detail A in 2 bei einer andersartigen bevorzugten Ausführungsform einer erfindungsgemäßen Bodenreinigungsvorrichtung;
• 4: ein Blockschaltbild einer weiteren bevorzugten Ausführungsform einer erfindungsgemäßen Bodenreinigungsvorrichtung;
• 5: ein Blockschaltbild einer weiteren bevorzugten Ausführungsform einer erfindungsgemäßen Bodenreinigungsvorrichtung;
• 6: ein Blockschaltbild einer weiteren bevorzugten Ausführungsform einer erfindungsgemäßen Bodenreinigungsvorrichtung; und
• 7: ein Blockschaltbild einer weiteren bevorzugten Ausführungsform einer erfindungsgemäßen Bodenreinigungsvorrichtung.

The following description of preferred embodiments of the invention serves in conjunction with the drawing to explain the invention in more detail. Show it:

• 1 : a schematic perspective view of a floor cleaning device according to the invention;
• 2nd : a block diagram of the floor cleaning device from 1 ;
• 3rd : an enlarged detail view according to detail A in 2nd in another preferred embodiment of a floor cleaning device according to the invention;
• 4th : a block diagram of a further preferred embodiment of a floor cleaning device according to the invention;
• 5 : a block diagram of a further preferred embodiment of a floor cleaning device according to the invention;
• 6 : a block diagram of a further preferred embodiment of a floor cleaning device according to the invention; and
• 7 : A block diagram of a further preferred embodiment of a floor cleaning device according to the invention.

1 shows a total with the reference symbol 10th proven advantageous embodiment of a floor cleaning device according to the invention. The floor cleaning device 10th is in the present example as a scrubber drier 12 designed by a user, not shown in the drawing, for cleaning a floor surface 14 to be led.

For moving on the floor surface 14 includes the floor cleaning device 10th a landing gear 16 , and the user is usually in relation to a longitudinal or main direction of movement 18th , behind the floor cleaning device 10th . At the back 20th is an operating device 22 arranged for the user.

For cleaning the floor surface 14 includes the floor cleaning device 10th a cleaning tool 24th . The cleaning tool 24th in the present case comprises a plate brush 26 . In another advantageous embodiment, instead of the plate brush 26 or at least one roller brush can be provided in addition to this.

The floor cleaning device 10th includes a housing 28 . The housing 28 forms a container 30th for cleaning liquid. The cleaning liquid is in particular water, to which a cleaning chemical can be added to increase the cleaning effect.

The housing 28 forms in particular container walls of the container 30th , in the present case a floor wall 32 and a side wall 34 . The side wall 34 is all-round and stands on the bottom wall 32 upwards.

Position and orientation information such as "top", "bottom", "vertical", "horizontal" or the like are present as intended use of the floor cleaning device 10th related. The floor cleaning device is in its intended use 10th on the of the floor area 14 defined footprint, the floor area 14 in the present case can be seen as horizontally aligned.

The container is on the top 30th a container opening 36 on. The container opening 36 is from one of the housing 28 formed edge 38 edged. The edge 38 is designed, for example, as a flat edge.

For closing and opening the container opening 36 includes the housing 28 a movable housing part, in the present case designed as a foldable ceiling wall 40 . The ceiling wall 40 is on the housing 28 otherwise by one transverse to the longitudinal direction 18th aligned pivot axis 42 pivoted.

The ceiling wall 40 can from one in 1 shown open position in a closed position not shown in the drawing and vice versa. The container opening is in the open position 36 Approved. The container opening is in the closed position 36 closed, the ceiling wall 40 on the edge 38 is present.

On the edge 38 are two shots here 44 for filter devices of the floor cleaning device mentioned below 10th educated.

As below in particular 2nd the container shows 30th an interior 46 on. In the bottom wall 32 is an outlet 48 formed for cleaning fluid. To the outlet 48 is a drain pipe 50 connected. A valve device 52 is provided to the drain line 50 to release or block. In the present case, the valve device 52 at the end of the drain pipe 50 arranged.

The drain pipe 50 For example, a hose line is on the back 20th is arranged. The user can drain the drain line 50 from the housing 28 loosen and position its free end on a drain for cleaning liquid. The valve device 52 is manually operable in the present case.

For picking up dirty cleaning fluid from the floor surface 14 includes the floor cleaning device 10th a dirt collecting device 54 . The dirt collecting device 54 encompasses the floor area 14 scraping squeegee 56 and a the squeegee 56 and the container 30th suction unit with vacuum 58 . Dirty liquid becomes an inlet 60 of the container 30th via a suction line 62 fed.

At the entrance 60 is only in 2nd filter device shown 64 arranged. By means of the filter device 64 coarse dirt can be filtered out of the cleaning liquid. For example, the filter device comprises 64 a removable and empty sieve.

With the floor cleaning device 10th cleaning fluid is recovered and used repeatedly.

The container 30th has another outlet 66 on, preferably above the outlet 48 is arranged. At the outlet 66 is a filter device 68 arranged. The filter device 68 is a pre-filter for cleaning fluid that the cleaning tool 24th via one to the outlet 66 connected discharge line 70 is fed. The filter device 68 is, for example, such that particles with a size of approximately 500 µm or more can be filtered out of the cleaning liquid.

The discharge line 70 leads from the outlet 66 to the cleaning tool 24th . In the delivery line 70 is at least one filter device 72 switched. A respective filter device 72 has a filter element through which cleaning can flow 73 , for example in the form of a cartridge filter.

In the present case there are two identically designed filter devices 72 available. Explanations relating to only one filter device 72 apply to the other filter device 72 corresponding.

Any filter device 72 is a recording 44 used and can be removed from the user for exchange and / or cleaning upwards if the ceiling wall 40 occupies the open position ( 1 ).

The discharge line 70 includes a first section 74 up to a respective entrance 76 of the filter devices 72 . On the first section 74 branches the delivery line 70 in two segments 78 , each a filter device 72 assigned.

From the outlet 80 the respective filter device 72 up to a valve device 82 that of the delivery line 70 is assigned, the delivery line 70 a second section 84 on. The segments 78 unite on the second section 84 .

From the valve device 82 to the cleaning tool 24th includes the delivery line 70 a dispensing section 86 .

In the delivery line 70 is a pump unit 88 switched, in this case in the first section 74 . About the pump unit 88 the pressure of the cleaning liquid can be increased. In operation of the floor cleaning device 10th cleaning fluid flows through the discharge line 70 and the filter devices 72 to the valve device 82 . The valve device 82 gives the discharge line 70 free so that cleaning fluid through the dispensing section 86 to the cleaning tool 24th flows.

The filter element 73 is designed here to filter particles with a size of approximately 100 μm or more from the cleaning liquid.

The floor cleaning device 10th includes a container 90 for taking up a cleaning chemical. The container 90 stands over a supply line 92 with the dispensing section 86 in flow connection. In the supply line 92 is a pump unit 94 switched, for example a metering pump.

The mixture of cleaning liquid and cleaning chemical acts on the plate brush 26 and increases cleaning performance.

The floor cleaning device 10th comprises a control device 96 . The control device 96 stands, this is not shown in the drawing for the sake of clarity, with the electrically active components of the floor cleaning device 10th in operative connection. About this existing coupling of the control device 96 with the components, the control device 96 control these components and the operation of the floor cleaning device 10th control and / or regulate overall.

For example, the control device 96 with the control device 22 coupled with the valve device 82 and preferably all of the valve devices mentioned below, and with a sensor device 98 the floor cleaning device 10th . Also a coupling with the valve device 52 is conceivable.

The sensor device 98 includes a pressure sensor 100 . The pressure sensor 100 is present in the delivery line 70 switched, especially in its first section 74 . This enables the pressure of the cleaning liquid to be used to estimate whether the filter devices 72 With Dirt particles are clogged and should be cleaned or replaced.

The sensor device 98 also includes a volume flow sensor 102 . The volume flow sensor 102 is in the delivery line 70 switched, especially in its second section 84 . Using the volume flow sensor 102 can be estimated whether the filtering devices 72 are clogged with dirt particles and should be cleaned or replaced.

The sensor device further comprises 98 a level sensor 104 on the container 30th . Via the level sensor 104 the level of the cleaning liquid in the container 30th be determined. This gives, for example, the possibility of determining how high the cleaning fluid consumption is. The need to refill or replace cleaning fluid can be derived from this.

The sensor device 98 also includes a dirt sensor 106 , preferably on the container 30th . About the dirt sensor 106 the degree of contamination of the cleaning liquid can be determined. For example, the dirt sensor 106 optically designed and includes a light barrier. The degree of soiling can be used to determine whether the cleaning liquid is so dirty that it should be changed.

Signals from the sensor device 98 can the control device 96 fed and evaluated by this. The control device 96 also includes a timing element 108 for determining and tracking predetermined or predeterminable time periods and / or intervals. For example, the operating time of the floor cleaning device 10th be determined, and with the aid of a signal from the volume flow sensor 102 how often the cleaning liquid has been circulated. For example, this may result in the need to change the cleaning fluid.

Depending on signals from the sensor device 98 can the control device 96 Issue instructions for the user, especially on an information unit 110 the control device 22 . The information includes, for example, the recommendation to exchange or refill the cleaning liquid or the recommendation to replace the filter devices 72 to clean or change. Information regarding the remaining cleaning time and / or the remaining cleaning area can preferably be provided, calculated on the basis of the consumption of cleaning liquid.

With the floor cleaning device 10th it proves to be particularly advantageous that this has a flushing line 112 has, by means of which the filter device 72 , especially the filter element 73 , can be cleaned by rinsing. This has the advantage of removing adhering dirt particles and the operating time of the filter devices 72 can be increased. Exchange intervals for the filter devices 72 are thereby extended. In addition, the handling of the floor cleaning device proves to be 10th for rinsing the filter devices 72 as user-friendly.

The flush line 112 includes a connector 114 , which is preferably standardized. The connection element 114 is on the outside of the housing 28 arranged, for example on the back 20th (in 1 not shown), and can be easily achieved by the user. On the connection element 114 a supply line can be connected, for example a hose line with a corresponding connection element.

A valve device is provided around the flushing line 112 either release or block. The flushing line extends from the connection element to the valve device 112 a feed section 116 . In the feed section 116 a check valve is preferably arranged.

In the present case it is that of the flushing line 112 associated valve device the valve device 82 , ie the discharge line 70 and the flush line 112 are optionally by means of a common valve device 82 can be released or blocked. For this purpose the valve device 82 designed as a 3/2-way valve device.

With the floor cleaning device 10th is another valve device 122 provided, which will be discussed later. This valve device is not required for the floor cleaning device 160 which will be explained later.

To achieve a structurally simple design of the floor cleaning device 10th it is favorable in the present case that the flushing line 112 section by section through the delivery line 70 is formed. From the valve device 82 to the outlet 80 forms the second section 84 a section of the purge line 112 . In this way, the filter device 72 through the outlet 80 with the flush line 112 connected to the flow.

The filter device 72 is with the container 30th via the flush line 112 connected to the flow. The flush line 112 flows into the container 30th . The entrance 76 forms a flush outlet 117 the filter device 72 .

The first paragraph 74 partially forms a section of the flushing line 112 from the entrance 76 to to the container 30th . The pump unit 88 will have a bypass section 118 the flushing line 112 circumvented. In the area of the pump unit 88 includes the flush line 112 hence the bypass section 118 , instead of the corresponding section within the delivery line 70 . In the bypass section 118 is a valve device 120 switched to selectively enable or disable it.

In the cleaning operation of the floor cleaning device 10th are the valve devices 82 , 120 switched so that the second section 84 with the dispensing section 86 is connected to the flow and the feed section 116 as well as the bypass section 118 are locked.

For rinsing the filter devices 72 is the valve device 82 switched so that the feed section 116 with the second section 84 which in this case acts as a section of the purge line 112 works, is connected to the flow.

In the feed section 116 is another valve device 122 switched that the feed section 116 for rinsing the filter devices 72 also releases in the present case. In the flushing operation, flushing liquid, in particular water, flows from the connection element 114 through the feed section 116 , the second section 84 , the filter devices 72 and, apart from the pump unit 88 , through the first section 74 . The flow takes place through the means of the valve device 120 released bypass section 118 .

The direction of flow of the rinsing liquid is opposite to the direction of flow of the cleaning liquid, which flows through the discharge line 70 in the cleaning operation of the floor cleaning device 10th having. In particular, the filter element 73 flows through in the flushing mode in a direction opposite to the flow direction in the cleaning mode.

This leads to the filter elements 73 adhering dirt particles are caught by the rinsing liquid. The dirt particles are through the filter element 73 receiving housing 184 the filter device 72 at which the inlet 72 is arranged, into the container 30th rinsed. The filter devices 72 are cleaned.

A particular advantage with the floor cleaning device 10th consists in particular in that this is a filling line 124 for filling the container 30th having. This gives the user the opportunity to use the container 30th easy to fill.

In the present case, it is favorable that the filling line 124 through the flush line 112 is trained. A separate filling line can be saved in this way.

For example, the filter devices 72 for cleaning, first rinsed for a predetermined or predeterminable period of time, contaminated cleaning liquid via the drain line 50 can be dissipated. Then the drain pipe 50 be locked, and the container 30th can now be used as the filling line 124 acting flushing line 112 be filled with fresh cleaning liquid. The level of cleaning liquid can be determined, for example, using the timer 108 , of the volume flow sensor 102 and / or the level sensor 104 be determined.

The floor cleaning device 10th further comprises a container rinsing device 126 . The container rinsing device 126 includes at least one in the interior 46 directed nozzle 128 . There is a nozzle arrangement 130 with a plurality of nozzles 128 intended.

The nozzle arrangement 130 is on the ceiling wall 40 arranged, with openings of the nozzles 128 on the upper areas of the side wall 34 are directed. For cleaning the container 30th becomes the ceiling wall 40 transferred to the closed position. Adhesive dirt particles are caught by the rinsing liquid and thereby the container 30th cleaned. The rinsing liquid is preferably via the open drain line 50 dissipated.

The container rinsing device 126 includes a supply line 132 over which the nozzle arrangement 130 can be loaded with rinsing liquid. In the present case, the supply line branches 132 from the feed section 116 the flushing line 112 from. The branching takes place at the valve device already mentioned 122 . The valve device 122 is preferably designed as a 3/2-way valve for this purpose.

Depending on the position of the valve device 122 it can be provided that the feed section 116 overall, that rinsing liquid is blocked only by the supply section 116 to the valve device 82 reached, only through the supply line 132 for nozzle arrangement 130 , or at the same time through the feed section 116 and the supply line 132 .

It is advantageous that rinsing liquid through the connection element 114 the flushing line 112 can be fed user-friendly.

The floor cleaning device 10th also includes a vent line 134 . Via the vent line 134 can the filter devices 72 be vented to each segment 136 the vent line 134 connected. The segments 136 Unite. That the Filtering devices 72 opposite end of the vent line 134 flows into the container 30th .

In the vent line 134 is a valve device 138 switched so that the vent line 134 can either be released or blocked.

The following is an exemplary and preferred operating method for the floor cleaning device 10th described.

Is in cleaning operation based on the signals from the sensor device 98 found that the filtering devices 72 are to be cleaned, preferably that the cleaning liquid should be replaced at the same time, can be indicated by a note on the information unit 110 to be provided. The user preferably goes to a drain station, at which a filling station is also present.

About the notification unit 110 information and / or prompts can be provided to the user, if necessary with the need for one or multiple confirmation by the user. The information unit can do this 110 preferably comprise a touch-sensitive screen (touchscreen). For example, the notes are output in dialog mode.

In a preferred embodiment, the user receives the message, the drain line 50 from the housing 28 to solve and the valve device 52 to open, as well as a supply line on the connection element 114 to connect. Once this has been done, the user can carry out the maintenance by corresponding confirmation on the information unit 110 trigger, the maintenance subsequently completely or largely automatically under control of the control device 96 is carried out.

For example, dirty cleaning fluid flows through the drain line 50 to an expiration. The valve devices 122 and 82 are switched so that the rinsing line in the rinsing mode 112 with rinsing liquid. The discharge line 70 is to the dispensing section 86 locked out. The filter devices 72 are rinsed, for example for a predetermined or predeterminable period of time. Flushing liquid flows through the flushing line 112 , on the pump unit 88 passing through the bypass section 118 , in the container 30th . Dirt particles are carried over the drain line 50 dissipated.

It can then be provided that the valve device 122 is switched so that the nozzle arrangement 130 with rinsing liquid and the container 30th is cleaned inside. Dirt particles can still pass through the drain line 50 be dissipated.

It can be provided that the rinsing of the container 30th and the cleaning of the filter devices 72 done in reverse order or done simultaneously.

Following this, it can be provided that on the information unit 110 a note is given to the valve device 52 close and the drain pipe 50 back on the case 28 to arrange. Following a corresponding confirmation by the user, it can be provided that the valve device 122 to lock the supply line 132 is switched and that the valve devices 82 and 120 for filling the container 30th via the as filling line 124 acting flushing line 112 be switched.

Filling the container 30th is, for example, by means of the level sensor 104 monitored, alternatively filling is carried out for a predetermined or predeterminable period of time, the volume flow sensor also being used 102 can be used.

At least towards the end of the filling of the container 30th it is convenient to the vent line 134 via the valve device 138 to release. Is the desired level in the container 30th reached, the valve device is reached 120 preferably closed. The filter devices too 72 can be vented via the vent line 134 be filled with fresh cleaning liquid. Then the valve devices 138 , 82 and 122 closed.

The processes explained last preferably run automatically without the user having to do anything. When the operation resumes, the delivery line 70 and the filter devices 72 already filled with cleaning fluid, and operation can begin immediately after the supply line from the connector 114 is separated. In this regard, a notice is preferably given on the notice unit 110 .

If the drain station is located at a distance from a filling station, it is preferably provided that the container 30th first via the open drain line 50 is emptied. After closing and moving the floor cleaning device 10th the filter devices become the filling station 72 rinsed in the rinsing mode, the container 30th about the nozzle arrangement 130 cleaned and then the container 30th via the as filling line 124 acting flushing line 112 filled.

3rd shows a detailed view corresponding to the label A in 2nd with another preferred and otherwise hidden embodiment of the floor cleaning device according to the invention with reference numerals 140 .

While with the floor cleaning device 10th the 3/2-way valve 82 is used for the floor cleaning device 140 separate valve devices 142 for the discharge line 70 and 144 for the feed section 116 intended. The feed section 116 branches at one branch 146 in the second section 84 the discharge line 70 a.

Also with the floor cleaning device 140 forms the delivery line 70 the flushing line in sections 112 out.

The valve device is in cleaning operation 142 opened and the valve device 144 blocked. Cleaning fluid flows through the discharge line 70 (Arrow 148 ).

The valve device is in flushing mode 142 closed and the valve device 144 Approved. Flushing liquid flows through the supply section 116 in the second section 84 (Arrow 150 ).

Instead of the valve device designed as a 3/2-way valve 122 In a corresponding manner, separate valve devices could be used in the floor cleaning devices described here.

It can be provided that the valve devices 82 and 122 , or the valve devices 142 , 144 (and if necessary 122 ) are structurally integrated. 2nd indicates this with a dashed line 152 at. For example, a valve block is provided for structural integration.

One with the reference number 160 proven advantageous embodiment of the floor cleaning device according to the invention is shown schematically in 4th shown. For the same or equivalent features and components of the floor cleaning devices 10th and 160 identical reference numerals are used.

The floor cleaning device 160 is largely identical to the floor cleaning device 10th , however, the container rinsing device is omitted 126 and the supply line 132 . Accordingly, the valve device is also omitted 122 in the feed section 116 so that in the flush line 112 only the valve device 82 is switched. Otherwise, the functions of the floor cleaning devices are correct 10th and 160 match.

Below, with reference to the 5 to 7 further advantageous embodiments of the floor cleaning device according to the invention explained. Here too, identical reference numerals are used for the same or equivalent features and components. The following embodiments are mainly in terms of their most significant differences from the floor cleaning device 10th explained. Reference can be made to the above explanations regarding the advantages, the processes of interaction with the user and the automated flushing, cleaning and filling.

The floor cleaning device 170 according to 5 includes on the filter devices 72 one flush outlet each 117 . The flush outlet 117 differs from the entrance in the present case 76 . The entrance 76 also forms a rinse inlet 172 the respective filter device 72 .

Relative to the direction of flow of the rinsing liquid in the rinsing mode, one of the filter devices 72 downstream section of the flushing line 112 in part from the first section 74 the discharge line 70 educated. Deviating from the floor cleaning device 10th but is not the bypass section 118 intended.

Instead, the floor cleaning device 170 a connecting section 174 on that in the delivery line 70 branches. In particular, there are two unifying segments of the connecting section 174 intended. The union is downstream in the connecting section 174 one from the control device 96 controllable valve device 176 available. About the valve device 176 can the connecting section 174 can be either released or blocked.

The connecting section 174 branches, based on the direction of flow in the cleaning operation, the pump unit 88 upstream in the delivery line 70 a.

Alternatively or additionally, it can be provided that the flushing outlet 117 connected section of the flushing line 112 an outlet 177 forms. While in the former case, the flush line in the container 30th outlet, the outlet can 177 For example, be guided or aligned to a flushing liquid disposal process.

The floor cleaning device 170 further includes a feed line 178 . The supply line 178 is with the inlet 76 , and especially the sink inlet 172 , can be brought into flow connection. The supply line 178 branches into the delivery line 70 one, preferably upstream of its branching into the segments 78 .

In the supply line 178 is one of the control device 96 controllable valve device 180 switched to the supply line 178 either release or block.

The supply line 178 can be brought into flow connection with the external supply line in the present case, which is connected to the connecting element 114 connected. The supply line 178 branches from the flushing line 112 from, in particular from their feed section 116 .

For loading the supply line 178 the valve device can be used with rinsing liquid 180 released and the valve device 82 be blocked. It is understood that the valve device, if present 122 also to release the feed section 116 is released. A dashed line 182 symbolizes that the valve devices 82 , 122 and 180 can be wholly or partially structurally integrated, for example in a valve block.

The valve devices are in cleaning operation 176 , 122 and 180 blocked. The valve device 82 gives the flow to the cleaning tool 24th free.

The flushing operation takes place with the floor cleaning device 170 preferably automated in two stages. Both stages can be carried out alternately and repeatedly and can be carried out for respective predetermined or predeterminable periods of time. It is also conceivable that the respective stages depend on residual contamination of the washing liquid.

The valve device is in a first stage of the flushing operation 176 released and the pump unit 88 deactivated. The valve devices 122 and 82 give the flush line 112 free. The valve device 180 is closed.

In the first stage, flushing liquid flows through the outlet 80 into the filter element. The direction of flow is opposite to the direction of flow of the cleaning liquid in cleaning operation. Adhesive dirt will come off. Flushing liquid with contaminants can already flow through the filter device downstream 72 arranged section of the flushing line 112 (via the connecting section 174 and the discharge line 70 ) in the container 30th be dissipated.

The adhering dirt initially collects in the receiving space, that of the housing 184 the filter device 72 is formed in which the filter element 73 is included. The contaminated rinsing liquid can be removed from this space located upstream of the filter element (based on the flow in the cleaning operation).

In a second stage of the flushing operation, the valve device 82 blocked. The supply line is by means of the valve device 180 Approved. Flushing liquid flows through the supply line to the flushing inlet 172 . In this way, the dirt can be removed particularly well from the receiving space through the flushing outlet 117 in the container 30th be flushed because the flow resistance over the filter element 73 not applicable.

In a preferred embodiment it can be provided, for example, that the respective stage of the flushing operation lasts approximately 20 seconds. For example, approximately five to ten repetitions of this cycle are performed.

It is beneficial if the sink inlet 172 is arranged above the flushing outlet. This facilitates the removal of dirty washing liquid from the housing 184 .

In the 6 Floor cleaning device is shown with the reference numeral 190 busy. From the floor cleaning device 170 it differs in that the supply line 178 and the valve device 180 omitted.

With the floor cleaning device 190 the flushing operation can also be carried out in two stages. The first stage, in which the rinsing liquid flows through the rinsing line and the filter element 73 acted against the direction of flow in the cleaning operation in order to remove dirt adhering to it, agrees with the first stage of the flushing operation in the floor cleaning device 170 match.

In a second stage, cleaning fluid is removed from the container 30th promoted. For this purpose, it is advantageous if in the container 30th There is cleaning liquid that has not been drained before the rinsing operation or that has been filled in by the user. In the second stage, the pumping unit 88 activated, and the cleaning liquid is drained through the rinse inlet 172 through into the housing 184 promoted. Dirty rinsing liquid is released over the connection section 174 dissipated. For example, the dirt becomes an outlet 177 guided. It is also conceivable that contamination in the container 30th be dissipated. The pump unit can be used for the latter purpose 88 be operated cyclically, for example.

It is also conceivable that liquid by means of the pump unit 88 in a circle through the delivery line 70 , the housing 184 and the Connecting section 174 is promoted, and that contamination ends up over the outlet 177 be dissipated.

7 shows one with the reference symbol 200 proven advantageous embodiment of the floor cleaning device according to the invention.

With the floor cleaning device 200 is also the supply line 178 provided by the feed section 116 branches. The supply line 178 branches into two segments. Each segment is at a sink inlet 172 of the filter devices 72 connected. Deviating from the floor cleaning device 170 does not form the inlet 76 the sink inlet. Instead there is a separate flush inlet 172 intended.

As with the floor cleaning device 10th forms the inlet 76 the flush outlet 117 . The discharge line 70 upstream of the filter device 72 (in relation to the direction of flow in cleaning operation) forms a section of the flushing line 112 , also the bypass section 118 to bypass the pump unit 88 is provided.

Also with the floor cleaning device 200 the flushing operation is preferably carried out in two stages. Adhesive soiling can first of all be caused by loading the filter element via the flushing line 112 from the filter element 73 be replaced. In a next stage, the supply line 178 unlocked to remove dirt from the housing 184 to wash. Flushing liquid flows through the flushing inlet 172 , the housing 184 and the flush outlet 117 through the connected flushing line into the container 30th .

For floor cleaning devices 170 and 200 can, for example, the flushing line 112 as filling line 124 be used. Alternatively or additionally, the supply line can also be used 178 as filling line 124 be used.

Also with the floor cleaning devices 10th , 160 and 200 can be provided that an outlet 177 is available. This is for example at the section 74 connected and can preferably be released or blocked by means of a separate valve device.

Reference symbol list

10th

Floor cleaning device

12

Scrubber drier

14

Floor area

16

landing gear

18th

Longitudinal / main direction of movement

20th

back

22

Control device

24th

Cleaning tool

26

Plate brush

28

casing

30th

container

32

Bottom wall

34

Side wall

36

Container opening

38

edge

40

Ceiling wall

42

Swivel axis

44

admission

46

inner space

48

Outlet

50

Drain pipe

52

Valve device

54

Dirt pick-up device

56

Squeegee

58

Suction unit

60

inlet

62

Suction line

64

Filter device

66

Outlet

68

Filter device

70

Output line

72

Filter device

73

Filter element

74

first section

76

inlet

78

segment

80

Outlet

82

Valve device

84

second part

86

Dispensing section

88

Pump unit

90

container

92

Supply line

94

Pump unit

96

Control device

98

Sensor device

100

Pressure sensor

102

Volume flow sensor

104

Level sensor

106

Dirt sensor

108

Timer

110

Information unit

112

Flushing line

114

Connecting element

116

Feed section

117

Flush outlet

118

Bypass section

120

Valve device

122

Valve device

124

Filling line

126

Container flushing device

128

jet

130

Nozzle arrangement

132

Supply line

134

Vent line

136

segment

138

Valve device

140

Floor cleaning device

142

Valve device

144

Valve device

146

Branching

148, 150

arrow

152

dashed line

160

Floor cleaning device

170

Floor cleaning device

172

Sink inlet

174

Connecting section

176

Valve device

177

Outlet

178

Supply line

180

Valve device

182

dashed line

184

casing

190

Floor cleaning device

200

Floor cleaning device

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2511016 B1 [0002]
• WO 2015/106257 A1 [0003, 0010]
• EP 3130271 A1 [0004]

Claims (43)

Floor cleaning device with recovery of cleaning liquid, comprising: - a container (30) for storing a cleaning liquid; - A cleaning tool (24) for cleaning the bottom surface (14); - A discharge line (70) via which the container (30) is in flow connection with the cleaning tool (24) in a cleaning operation; - at least one filter device (72) connected into the discharge line (70) with an inlet (76), an outlet (80) and a filter element (73) through which flow can flow; - A valve device (82; 142) for releasing and blocking the discharge line (70); - preferably a control device (96) coupled to the valve device (82; 142); - a dirt pick-up device (54) for picking up dirty cleaning liquid and transferring it into the container (30); - A flushing line (112) with a connection element (114) for connecting an external supply line, the at least one filter device (72) being connected to the flow with the flushing line (112) and the filter element (73) being able to flow through in a flushing operation against the direction of flow in the cleaning operation ; and - A valve device (82, 122; 142), preferably coupled to the control device (96), for releasing and blocking the flushing line (112). Floor cleaning device after Claim 1 , characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) is free of another container for storing cleaning liquid cleaned via the at least one filter device (72). Floor cleaning device after Claim 1 or 2nd , characterized in that the at least one filter device (72) is connected into the flushing line (112). Floor cleaning device according to one of the preceding claims, characterized in that the connection element (114) of the flushing line (112) is arranged on the outside on a housing (28) of the floor cleaning device (10; 140; 160; 170; 190; 200). Floor cleaning device according to one of the preceding claims, characterized in that the flushing line (112) is connected to the outlet (80) of the at least one filter device (72). Floor cleaning device according to one of the preceding claims, characterized in that the flushing line (112) opens into the container (30) or that the flushing line (112) comprises or forms an outlet (177). Floor cleaning device according to one of the preceding claims, characterized in that a common valve device (82) is provided for the delivery line (70) and the flushing line (112), the flushing line (112) comprising a supply section (116) upstream of the valve device (82) , and that the discharge line (70) forms the rinsing line (112) between the valve device (82) and an outlet of the at least one filter device (72). Floor cleaning device according to one of the Claims 1 to 6 , characterized in that separate valve devices (142, 144) are provided for the rinsing line (112) and the delivery line (70), a valve device (144) being connected to a supply section (116) of the rinsing line (112) which is connected to the Output line (70) branches, and a valve device (142) downstream of this branch, based on the direction of flow in cleaning operation, is connected into the output line (70). Floor cleaning device according to one of the preceding claims, characterized in that a section (74) of the discharge line (70) arranged between the container (30) and the inlet (76) of the at least one filter device (72) at least partially forms the flushing line (112). Floor cleaning device according to one of the preceding claims, characterized in that the at least one filter device (72) comprises or forms a rinsing outlet (117) which is flow-connected to the rinsing line (112), for removing dirt detached in the rinsing operation from the at least one filter device ( 72). Floor cleaning device according to one of the preceding claims, characterized in that the inlet (76) of the at least one filter device (72) forms the rinsing outlet (117) and / or that a rinsing outlet separate from the inlet (76) is provided. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) is a pump unit (10) connected between the container (30) and the valve device (82; 142) into the delivery line (70). 88) for increasing the pressure of the cleaning liquid through the discharge line (70), the pump unit (88) preferably the at least a filter device (72) is connected upstream in the delivery line (70). Floor cleaning device after Claim 12 combined with Claim 9 , characterized in that the discharge line (70) forms the flushing line (112) only partially, a bypass section (118) of the flushing line (112) bypassing the pump unit (88). Floor cleaning device after Claim 12 combined with Claim 9 , characterized in that the discharge line (70) forms the rinsing line (112) only partially, with a connecting section (174) preceding the pump unit (88) branching into the discharge line (70) in relation to the direction of flow in the cleaning operation. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (170; 200) comprises a feed line (178) which is flow-connected or flow-connectable to a flushing inlet (172) of the at least one filter device (76), at least one of the following being provided is: the floor cleaning device (170; 200) preferably comprises a valve device (180) coupled to the control device (96) for releasing and blocking the supply line (178); - The supply line (178) comprises a connection element (114) for connecting an external supply line. Floor cleaning device according to one of the preceding claims, characterized in that the supply line (178) branches off from the flushing line (112). Floor cleaning device according to one of the preceding claims, characterized in that the inlet (76) of the at least one filter device (72) forms the rinsing inlet (172), the feed line (178) preceding the inlet (76), based on the direction of flow in the cleaning operation, branches into the discharge line (70) and / or that a rinse inlet (172) separate from the inlet (76) is provided, to which the feed line (178) is connected. Floor cleaning device according to one of the preceding claims, characterized by taking up the flushing operation, in which flushing liquid acts on the filter element (73) through the flushing line (112), in order to remove dirt. Floor cleaning device Claim 18 in connection with one of the Claims 15 to 17th , characterized by blocking the flushing line (112) on the upstream side of the at least one filter device (72) and releasing the supply line (178), for removing detached contaminants through a flushing outlet (117) of the at least one filter device (72) and the flushing line (112) on the downstream side of the at least one filter device (72). Floor cleaning device Claim 18 combined with Claim 14 , characterized by blocking the flushing line (112) on the upstream side of the at least one filter device (72), activating the pump unit (88) and conveying cleaning fluid from the container (30) through the discharge line (70) into the at least one filter device (72), and Removal of contaminants through a rinsing outlet (117) of the at least one filter device (72) and the rinsing line (112) downstream of the at least one filter device (72). Floor cleaning device according to one of the preceding claims, characterized in that the discharge line (70) on the downstream side of the valve device (82; 142) comprises a discharge section (86) and is connected to the cleaning tool (24) via the latter. Floor cleaning device after Claim 21 , characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) comprises a container (90) for storing a cleaning chemical which can be admixed with the cleaning liquid and which is connected to the discharge section (86) via a feed line (92). Floor cleaning device after Claim 22 , characterized in that a pump unit (94) for supplying the cleaning chemical is connected in the supply line (92). Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) comprises two or more preferably identical filter devices (72). Floor cleaning device after Claim 24 , characterized in that the discharge line (70) branches into two or more segments (78) into each of which a filter device (72) is connected, which segments (78) combine downstream of the filter devices (72) in the flow direction of the cleaning liquid. Floor cleaning device after Claim 24 or 25th , characterized in that the flushing line (112) branches into two or more segments (78), into each of which a filter device (72) is connected, which segments (78) are in Combine the flow direction of the rinsing liquid downstream of the filter devices (72). Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) comprises a sensor device (98) coupled to the control device (96), depending on its signal from the control device (96) on an information unit (110) of the floor cleaning device (10; 140; 160; 170; 190; 200) a message for the user regarding at least one of the following can be issued: - recommendation to exchange or refill the cleaning liquid; - Advice to clean or replace the at least one filter device (72) in whole or in part; - Information regarding the remaining cleaning time and / or the remaining cleaning area. Floor cleaning device after Claim 27 , characterized in that the sensor device (98) comprises at least one of the following: - a pressure sensor (100) in the discharge line (70), preferably upstream of the at least one filter device (72); - A volume flow sensor (102), preferably downstream of the at least one filter device (72); - A level sensor (104) on the container (30); - A timer (108) for measuring operating times and / or intervals. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) has a drain line (50) connected to an outlet (48) of the container (30) and a valve device (52) for Releasing and locking the drain line (50) includes. Floor cleaning device after Claim 29 , characterized in that the valve device (52) is coupled to the control device (98) and / or can be actuated manually. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) comprises a filling line (124) with a connecting element (114) for connecting an external supply line which flows into the container (30 ) opens, and preferably a valve device (82) coupled to the control device (96) for releasing and blocking the filling line (124). Floor cleaning device after Claim 31 , characterized in that the flushing line (112) or the supply line (178) at least partially forms the filling line (124). Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 170; 190; 200) comprises a container rinsing device (126) with at least one nozzle (128) directed into the container (30) and a feed line (92) , through which the at least one nozzle (128) can be acted upon with rinsing liquid. Floor cleaning device after Claim 33 , characterized in that the floor cleaning device (10; 140; 170; 190; 200) comprises a valve device (82), preferably coupled to the control device (96), for releasing and blocking the supply line (92) and / or that the supply line (134) comprises a connection element (114) for connecting an external supply line. Floor cleaning device after Claim 33 or 34 , characterized in that the feed line (92) branches off from the filling line (124) or the rinsing line (112), in particular via a valve device (122) connected to it. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) comprises a ventilation line (134), the inlet of which is connected to the at least one filter device (72), and preferably one the control device (96) coupled valve device (138) for releasing and blocking the vent line (134). Floor cleaning device after Claim 36 , characterized in that the vent line (134) opens into the container (30). Floor cleaning device according to one of the preceding claims in connection with Claim 24 , characterized in that two or more segments (136) of the vent line (134), each connected to a filter device (72) and merging, are provided. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) is an operating device (22) coupled to the control device (96) for the user with an optical and / or acoustic notification unit ( 110), the control unit (96) providing instructions on guiding and / or informing the user with respect to at least one of the following: Indication of necessary or advisable change of cleaning liquid; - Reference to cleaning and / or replacement of the at least one filter device (72) or a part thereof, in particular the filter element (73); - Notice regarding the emptying of the container (30) via a drain line (50); - Note regarding the connection of a supply line for rinsing the at least one filter device (72); - Notice regarding the connection of a supply line for filling the container (30); - Notice regarding the connection of a supply line for rinsing the container (30); - Status information about the floor cleaning device (10; 140; 160; 170; 190; 200). Floor cleaning device after Claim 39 , characterized in that at least one notice with a request to the user for information is provided, after confirmation by the user at least one of the following can be carried out: - release of the flushing line (112) for flushing the at least one filter device (72); - Release of the supply line (178) for removing dirt from the at least one filter device (72); - Rinsing the container (30); - filling the container (30); - Filling the at least one filter device (72) and / or the discharge line (70) with cleaning fluid for the start-up. Floor cleaning device according to one of the preceding claims, characterized in that at least one of the following can be carried out: rinsing the at least one filter device (72) for a predetermined or predeterminable period of time and / or depending on a signal from a dirt sensor coupled to the control device (96) ( 106). - Rinsing the container (30) for a predetermined or predeterminable period of time and / or depending on a signal from a dirt sensor (106) coupled to the control device (96). - Filling the container (30) for a predetermined or predeterminable time period and / or depending on a signal from a level sensor (104) arranged on the container (30) and coupled to the control device (96). Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140; 160; 170; 190; 200) comprises at least one of the following: - a filter device (64) at an inlet (60) of the container (30) for dirt picked up from the bottom surface (14); - A filter device (68) at an outlet (66) of the container (30), to which outlet (66) the discharge line (70) is connected. Floor cleaning device according to one of the preceding claims, characterized in that at least one of the following applies: - the floor cleaning device (10; 140; 160; 170; 190; 200) is a wake-up device, a stand-up device or a ride-on device; - The floor cleaning device (10; 140; 160; 170; 190; 200) is a scrubber drier (12).

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