DE102017120759A1 - Self-propelled and self-steering floor cleaning device, floor cleaning system and method for cleaning a floor surface - Google Patents

Abstract

The invention relates to a self-propelled and self-steering floor cleaning device, comprising a control unit, a drive unit for moving the floor cleaning device on a floor surface to be cleaned, a cleaning unit with a drivable cleaning roller for wet cleaning of the bottom surface, a cleaning liquid container for cleaning liquid, and a dirty liquid container for dirt collected from the bottom surface wherein the floor cleaning appliance comprises a first appliance unit and a second appliance unit, wherein the first appliance unit comprises the drive unit and the cleaning unit and is movable separately from the second appliance unit, the second appliance unit comprising the cleaning fluid container and / or the dirty fluid container, and wherein the floor cleaning appliance In particular, the control unit can be controlled by the control unit for connecting the second device with the first unit and disconnecting the units from each other. Moreover, the invention relates to a floor cleaning system and a method for cleaning a floor surface.

Description

The invention relates to a self-propelled and self-steering floor cleaning device.

Moreover, the invention relates to a floor cleaning system with such a floor cleaning device.

Furthermore, the invention relates to a method for cleaning a floor surface with a cleaning system.

With a self-propelled and self-steering floor cleaning device, an autonomous cleaning of a floor surface can be carried out. The floor cleaning device can thereby move on the floor surface, with a cleaning unit remove dirt from this and transfer detached dirt in a dirt container. It is known that the cleaning unit may comprise a bristling sweeping roller for sweeping up dirt from the bottom surface. Alternatively, it is known that the cleaning unit may comprise a wiping roller for wet cleaning of the bottom surface, wherein the dirt is wetted with a cleaning liquid and the mixture of dirt and cleaning liquid (hereinafter dirty liquid) is transferred into the dirt container.

The prior art also describes possibilities of the floor cleaning appliance to orient itself in the environment to be cleaned. For example, it can be provided that a map of the environment is stored in the floor cleaning device. In the map, different rooms or room areas can be stored, which can be arbitrarily traversed and cleaned by the floor cleaning device or according to a predetermined or predetermined cleaning plan. Based on features of the environment, the floor cleaning device can determine its position relative to the environment and thereby also within the map.

The object of the present invention is to provide a floor cleaning apparatus, a floor cleaning system having a floor cleaning apparatus, and a method of cleaning a floor area having a higher versatility.

This object is achieved by an inventive self-propelled and self-steering floor cleaning device comprising a control unit, a drive unit for moving the floor cleaning device on a floor surface to be cleaned, a cleaning unit with a drivable cleaning roller for wet cleaning of the bottom surface, a cleaning liquid container for cleaning liquid and a dirty liquid container for from the bottom surface wherein the floor cleaning appliance comprises a first appliance unit and a second appliance unit, wherein the first appliance unit comprises the drive unit and the cleaning unit and is movable separately from the second appliance unit, the second appliance unit comprising the cleaning fluid container and / or the dirty fluid container, and wherein the Floor cleaning device a particular controllable by the control unit recording unit comprises Ve Bind the second unit with the first unit unit and release the unit units from each other.

In the floor cleaning appliance according to the invention, a first appliance unit is provided and a second appliance unit. The first unit unit can be moved by means of the drive unit on the bottom surface and includes the cleaning unit with the cleaning roller. The second device unit comprises at least one of the containers (cleaning liquid container, dirty liquid container), wherein the second unit unit of a preferred embodiment of the floor cleaning device comprises the cleaning liquid container and the dirty liquid container. By means of the receiving unit, which is preferably controlled by the control unit, the possibility is given to connect the second unit with the first unit unit, so that the second unit can be recorded or coupled. Conversely, the second device unit can be detached and decoupled or decoupled from the first device unit by means of the receiving unit. This makes it possible to accommodate a second unit unit if necessary, for example, if necessary, to cleaning fluid and / or if necessary to an empty dirt collecting container with the first unit to perform the cleaning of the bottom surface. In a corresponding manner, the second unit unit can be discontinued from the first unit if necessary, for example an empty cleaning fluid container and / or a filled dirt collection container. This allows a versatile use of the floor cleaning device, in particular in this and a further second device unit having floor cleaning system, which will be discussed below. For example, a room or room area can be cleaned with the floor cleaning device. If further cleaning is required, the second unit can be discontinued, replaced by another second unit and the cleaning can be continued.

In the following it will be assumed, unless otherwise stated, that the first appliance unit and the second appliance unit are connected to each other and the floor cleaning appliance occupies a position of use on a floor surface. Position and orientation information such as "top", "bottom" are on one Proper use of the floor cleaning appliance. In the present case, indications such as "front" or "rear" refer to a longitudinal or main direction of movement of the floor cleaning appliance.

It is advantageous if the floor cleaning device has a sensor device. The sensor device can preferably detect the amount of cleaning liquid in the cleaning container. Alternatively or additionally, the amount of dirty liquid in the dirty liquid container can be detected with the sensor device. The sensor device is preferably coupled to the control unit, and depending on a signal of the sensor device, the control unit may decide whether the second device unit should be replaced with another second device unit.

Alternatively or additionally, it is conceivable to discontinue the second device unit after expiration of a predetermined period of time or to clean a predetermined area size and to exchange it for a further second device unit.

The second device unit may comprise at least one wheel or a roller. Alternatively it can be provided that the second device unit is free of a wheel or a roller.

It is advantageous if the second device unit comprises the cleaning liquid container and the dirty liquid container, wherein the cleaning liquid container is arranged above the dirty liquid container. This makes it easier to transfer dirty liquid in the ground-level arranged dirty liquid container. The removal of cleaning liquid from the cleaning liquid container can be done in a simpler manner, for example, only under the influence of gravity, with a pump unit may alternatively be provided.

It can be provided that the cleaning roller and / or the bottom surface can be acted upon by the cleaning liquid.

The cleaning liquid may in particular be water to which a cleaning chemical may be added to increase the cleaning effect.

The cleaning roller preferably has a sponge-like or cloth-like cleaning stock. The trim can be a textile trim, such as a microfiber textile material.

In an advantageous embodiment of the floor cleaning appliance, it is provided that the second appliance unit comprises the cleaning liquid container and the dirty liquid container, wherein these are arranged side by side on the second appliance unit. In particular, it may be provided that the dirty liquid container are arranged on one side facing the cleaning roller and the cleaning liquid container on a side facing away from the cleaning roller of the second unit. In this case, however, there is advantageously the possibility that the cleaning liquid container facing the cleaning roller has at least one container portion, taken over the cleaning liquid in a simpler manner and the cleaning unit can be supplied.

It is advantageous if the first device unit comprises or forms a support element and if the second device unit rests on the support element. The weight of the second unit can be better absorbed by the first unit in this way, with preferably leverage effects can be excluded. The support element and the second cleaning unit can advantageously comprise corresponding form-fitting elements, whereby the relative position of the unit units is clearly defined.

In particular, in combination with the last-mentioned advantageous embodiment, it is advantageous if the second unit unit can be raised by means of the receiving unit from the bottom surface and deductible on the first unit unit and vice versa. For coupling the second device unit, it can be lifted and stored on the first device unit. Conversely, the second unit can be lifted for decoupling from the first unit and set down on the floor surface. The receiving unit may accordingly be or comprise a lifting device.

In an advantageous embodiment it can be provided that the second device unit is suspended from the first device unit. For picking up and setting down, the second unit can be raised or lowered.

It proves to be advantageous if the first unit unit comprises the receiving unit, this facilitates the structural design of the floor cleaning device. In this way, the control unit can be directly in operative connection with the receiving unit, without the need for forming electrical connections, as is the case with an arrangement of the receiving unit on the second appliance unit.

Advantageously, the receiving unit comprises at least one coupling element, which can be coupled to the second device unit for receiving, and at least one coupling element associated drive element, for its transfer from a Ankoppelstellung in a connecting position, wherein the coupling element is further spaced in the Ankoppelstellung relative to the first unit unit than in the connecting position. For receiving the second device unit, the control unit can drive the drive element to transfer the at least one coupling element from the connection position to the coupling position, increasing the distance to the first unit unit. In the coupling position, the coupling element can couple with the corresponding coupling element of the second device unit. Subsequently, the coupling element can be transferred by means of the drive element in the connection position to receive the second unit unit.

It proves to be advantageous if the at least one coupling element is at least partially hook-shaped or comprises or forms a hook which can be brought into engagement with a corresponding coupling element of the second device unit for receiving. At the second device unit, for example, a projection or a receptacle is provided, on which or can attack the coupling element. The second device unit can thereby be reliably absorbed by the first device unit in a technically simple manner.

It can be provided, for example, that the at least one coupling element is pivotably mounted on the first unit unit by means of the at least one drive element. A free end of the coupling element can be approximated and brought into engagement with the corresponding coupling element of the second device unit when pivoting from the connecting position into the coupling position.

An advantageous embodiment of the floor cleaning device provides that the receiving unit comprises two coupling elements, which are spaced apart transversely to the longitudinal direction of the floor cleaning device, wherein the second unit unit is arranged between the coupling elements and the coupling elements are on opposite outer sides with the second unit unit engaged. The coupling elements can thereby be in engagement with the second device unit on both outer sides. Coupling and uncoupling, for example, by raising or lowering, the second unit can be performed reliably in this way, since tilting can be avoided.

In another advantageous embodiment, for example, it is provided that a coupling element is provided which is arranged transversely to the longitudinal direction of the floor cleaning appliance in the middle or substantially in the center of the floor cleaning appliance, the second appliance unit comprising a recess in which the coupling element engages. For example, the coupling element may be approximately centered on the second device unit and positioned in the recess when the second device unit is connected to the first device unit. It turns out that this also allows a reliable coupling and decoupling of the unit units can be performed.

Conveniently, the cleaning liquid container and / or the dirty liquid container is configured in a U-shaped plan view and comprises container sections arranged on both sides of the recess. The container sections encompass, for example, the recess and the coupling element. If the second appliance unit has the dirty liquid container, its dirt inlet opening can be interrupted, for example, in the region of the recess and of the coupling element.

In an advantageous embodiment of the floor cleaning appliance, it is favorable if the receiving unit on the first appliance unit comprises at least one slide-on element which couples to a corresponding slide-on element of the second appliance unit for recording when the first appliance unit moves in the direction of the second appliance unit. At least one slide-on element may for example comprise a slide-on surface or edge, so that the second device unit can be lifted by the approaching first device unit from the bottom surface. The sliding surface or Aufgleitkante is particularly aligned obliquely with respect to a reference plane, which is defined by the floor cleaning device and coincides with the bottom surface.

In a structurally simple embodiment, the slide-on elements are designed, for example, as a tongue-like projection on an appliance unit and corresponding recess on the other appliance unit. For example, the projection is arranged on the first device unit and the recess on the second unit unit. The reverse case is possible. At the recess, an insertion opening tapering in the direction of entry is advantageously provided. The insertion opening serves as an alignment and in particular as a centering aid for the projection and facilitates in this way the connection of the second unit with the first unit unit.

Preferably, in each case two transverse to the longitudinal direction of the floor cleaning device spaced apart sliding elements on the first unit and the second unit unit intended. These are, for example, on a device unit to two tongue-like projections that can engage in the corresponding recesses similar to the lifting fork of a forklift.

The receiving unit may comprise a connecting device for connecting the unit units with each other, for example by force and / or positive connection. The connecting device can be controlled by the control unit to enter or release the connection.

Preferably, the device unit comprises a wetting device for applying cleaning liquid to the cleaning roller.

Advantageously, the first device unit comprises a pump unit, by means of the cleaning liquid from the cleaning liquid container can be conveyed.

It can be provided that the second unit unit comprises the cleaning liquid container and that the first unit unit comprises a fluid line which engages in an opening of the cleaning liquid container. In the connected state of the unit units cleaning liquid can be removed through the fluid line and preferably applied to the cleaning roller.

An advantageous embodiment of the floor cleaning device provides that the second unit unit comprises the cleaning liquid container and that arranged on the first and the second unit unit connection elements are in fluid communication, can be removed via the cleaning liquid from the cleaning liquid container. For example, a nipple-like projection and a corresponding receptacle are provided as connection elements which couple together in the connected state of the device units. The projection is arranged, for example, on the first device unit.

It is advantageous if the floor cleaning device is free of a suction unit for receiving the dirty liquid from the bottom surface. In the present case, this can be understood in particular to mean that the floor cleaning appliance has no suction unit for generating a suction air flow, with which dirty liquid can be sucked into the dirt container. The floor cleaning device is in particular without suction unit. In this way, the weight of the floor cleaning device can be reduced. It is not necessary to provide electrical energy for a suction unit. The operating time of the floor cleaning device is thereby increased.

It is understood that the floor cleaning device comprises at least one preferably rechargeable battery for providing electrical energy.

Preferably, the floor cleaning device comprises a sweeping threshold arranged at a dirt inlet opening of the dirty liquid container, over which dirt can be swept by the cleaning roller into the dirty liquid container. Beyond the sweeping threshold, in particular larger dirt particles which do not adhere to the cleaning roller can be swept into the dirty liquid container.

Advantageously, the floor cleaning device comprises a scraper element, which is arranged on a dirt entry opening of the dirty liquid container and which engages with the cleaning roller. Dirty liquid can be largely stripped off in this way from the cleaning roller and is not applied again to the bottom surface.

In particular, in combination with the last-mentioned advantageous embodiment, it is advantageous if the floor cleaning device comprises a arranged on a dirt inlet opening of the dirty liquid container discharge element for dirty liquid from the cleaning roller in the dirty liquid container inside. For example, dirt liquid is stripped off the stripping element and reaches the discharge element. By means of the discharge element, the dirty liquid is conducted into the dirty liquid container.

It can be provided that the sweeping threshold, the stripping element and / or the discharge element are arranged on the first unit unit. Alternatively or additionally, it can be provided that the second unit unit comprises the dirty liquid container and the sweeping threshold, the stripping element and / or the discharge element. In particular, the sweeping threshold, the stripping element and / or the discharge element can be arranged or fixed on the dirty liquid container.

It can be provided that the dirty liquid container is positioned in front of the cleaning roller in relation to a main direction of movement of the floor cleaning appliance. Bottom side, the cleaning roller rotates conveniently in the main direction of movement. A trimming or cleaning elements act on the floor surface in the main direction of movement. Alternatively, a positioning of the dirty liquid container may be provided behind the cleaning roller, wherein the cleaning roller preferably rotates counter to the main direction of movement on the bottom side.

It is advantageous if the floor cleaning device comprises a navigation unit in which a map of an environment to be cleaned is deposited, wherein the map includes information about the position of the second device unit, and if the first device unit for receiving the second device unit can approach the position , This has already been discussed earlier. The first device unit can selectively approach the position to receive the second device unit. In a corresponding manner, the floor cleaning appliance can specifically approach a position at which the second appliance unit is to be set down.

Alternatively or additionally, it may be provided that a second device unit can be recognized by means of a sensor device of the floor cleaning device, for example when driving the floor cleaning device or the first device unit. The position of the second device unit can be stored in the card, or an existing position entry can be verified and, if necessary, corrected.

As already mentioned, the present invention also relates to a floor cleaning system.

An inventive, the above-mentioned task solving floor cleaning system comprises a floor cleaning device of the type described above and at least one further second unit, wherein a respective second unit with the first unit unit is selectively absorbable and deductible.

The advantages that have already been mentioned in connection with the explanation of the floor cleaning device according to the invention can also be achieved in the floor cleaning system. In this regard, reference may be made to the above statements. Advantageous embodiments of the floor cleaning system result from advantageous embodiments of the floor cleaning appliance according to the invention.

In the floor cleaning system according to the invention, at least two second units are provided, which can be selectively coupled to the first unit and separated from it. The floor cleaning system thus has a high versatility. For example, a part of the environment may be cleaned using a first second device unit. If necessary, the second unit of equipment can be discontinued and another second unit of equipment can be picked up to continue the cleaning process. Intervention by the user is not required for this purpose. The change of the second units of equipment can be carried out autonomously by the floor cleaning device.

It can be provided that the second device units are designed identically.

For example, the second unit units each comprise a cleaning liquid container, wherein the amount and / or the nature of the cleaning liquid of the second unit units differ from each other.

With the floor cleaning system is thereby given the opportunity to perform a needs-based cleaning of different sections of the environment.

For example, in an advantageous embodiment it can be provided that the second device units are assigned to different rooms or spatial regions of the environment which differ from one another with respect to the size and / or the nature of a respective floor surface. Thus, it is conceivable that the amount and / or the type of cleaning liquid of a second unit unit are adapted to the size of a room and / or the nature of the bottom surface. The floor cleaning device can clean this room using the second unit and then sell them. The further second device unit may be adapted to a space with respect to the amount and / or the type of cleaning liquid, which differs from the aforementioned space in terms of the size and / or the nature of the floor surface. The second room can be cleaned using the other unit. This proves to be advantageous, for example, if rooms of different sizes are provided and / or if the nature of the floor surfaces is so different that cleaning fluids of different types and / or compositions should be used for the needs-based cleaning of the respective floor space.

Advantageously, the second device units, at least partially, collected after processing a cleaning order for the environment to be cleaned at a predetermined position deductible. For example, a settling position can be provided in the map of the environment, at which the second device units can each be discontinued after cleaning and are positioned there after completion of the cleaning. It is advantageous if the position is in a room with the possibility of drainage, such as a kitchen, a toilet or a bathroom. It is also advantageous if the bottom surface of the room is insensitive to the cleaning liquid. Should dirt or cleaning fluid reach the floor surface when the second unit is set down, this will not cause any damage.

Alternatively or additionally, it can be provided that a respective device unit is deposited in the room for the purpose of which it has been used.

As already mentioned, the present invention also relates to a method. An inventive, the above-mentioned object solving method is used to clean a floor surface with a cleaning system of the aforementioned type, wherein the first unit unit successively received a plurality of second units and the bottom surface is cleaned.

The achievable by practicing the method advantages have already been mentioned in connection with the explanation of the floor cleaning device according to the invention and the floor cleaning system according to the invention, so that reference can be made in this regard to the above statements. Advantageous embodiments of the method result from advantageous embodiments of the floor cleaning device and the floor cleaning system.

In particular, it is expedient for the second device units to be assigned to respectively definable rooms or spatial areas, wherein the quantity and / or the nature of the cleaning liquids of the second device units are advantageously different from each other and preferably to the size and / or the nature of a respective floor surface of the room or room Room area are adapted.

It proves to be advantageous if the second unit units are positioned on or in the respective space or area to be cleaned prior to cleaning. The distances to be covered by the floor cleaning appliance when cleaning an environment with several rooms or room areas can thereby be reduced. In a respective room or room area, a respective second appliance unit is already positioned for its cleaning.

Alternatively it can be provided that the second unit units are arranged in a collected position prior to cleaning, for example in a room whose bottom surface is insensitive to the cleaning liquid (eg kitchen, toilet, bathroom). The first device unit may exchange a respective second device unit at the position for another second device unit.

Advantageously, the second unit units, at least partially, collected collected after cleaning at a predetermined position, as already explained above. Alternatively or additionally, it is conceivable to place the second device units spatially separated from one another in the room for the cleaning of which they were used.

• 1: eine schematische Schnittansicht eines erfindungsgemäßen Bodenreinigungsgerätes, das eine erste Geräteeinheit und eine mit dieser verbundene zweite Geräteeinheit umfasst;
• 2: eine vereinfachte Darstellung entsprechend 1 beim Absetzen oder beim Aufnehmen der zweiten Geräteeinheit;
• 3: eine Darstellung entsprechend 2, bei der die zweite Geräteeinheit auf einer Bodenfläche abgesetzt ist;
• 4: eine vereinfachte Draufsicht auf das Bodenreinigungsgerät aus 1;
• 5: eine zu reinigende Umgebung mit mehreren Räumen, wobei schematisch ein erfindungsgemäßes Bodenreinigungssystem mit einem Bodenreinigungsgerät und mehreren zweiten Geräteeinheiten dargestellt ist, wobei die Situation vor der Reinigung gezeigt ist;
• 6: eine Darstellung entsprechend 5 nach der Reinigung der Räume;
• 7: eine Darstellung einer weiteren bevorzugten Ausführungsform eines erfindungsgemäßen Bodenreinigungsgerätes beim Absetzen der zweiten Geräteeinheit;
• 8: eine Darstellung entsprechend 4 bei einer weiteren bevorzugten Ausführungsform eines erfindungsgemäßen Bodenreinigungsgerätes;
• 9: eine schematische Darstellung einer weiteren bevorzugten Ausführungsform eines erfindungsgemäßen Bodenreinigungsgerätes vor dem Verbinden der zweiten Geräteeinheit mit der ersten Geräteeinheit;
• 10: eine Darstellung entsprechend 9, wobei die zweite Geräteeinheit mit der ersten Geräteeinheit verbunden ist;
• 11: eine Draufsicht auf das Bodenreinigungsgerät in der Darstellung gemäß 9; und
• 12: eine Darstellung entsprechend 9 bei einer weiteren bevorzugten Ausführungsform eines erfindungsgemäßen Bodenreinigungsgerätes.

The following description of preferred embodiments is used in conjunction with the drawings for a more detailed explanation of the invention. Described are advantageous embodiments of a floor cleaning device according to the invention, a floor cleaning system according to the invention with a floor cleaning device, and a method for cleaning a floor surface with such a floor cleaning system. Show it:

• 1 a schematic sectional view of a floor cleaning device according to the invention, comprising a first unit unit and a second unit connected thereto;
• 2 : a simplified representation accordingly 1 when settling or when picking up the second unit;
• 3 : a representation accordingly 2 in which the second appliance unit is set down on a floor surface;
• 4 : a simplified plan view of the floor cleaning device off 1 ;
• 5 : a multi-room environment to be cleaned, schematically illustrating a floor cleaning system according to the invention having a floor cleaning appliance and a plurality of second appliance units, the situation being shown prior to cleaning;
• 6 : a representation accordingly 5 after cleaning the rooms;
• 7 a representation of a further preferred embodiment of a floor cleaning device according to the invention when discontinuing the second device unit;
• 8th : a representation accordingly 4 in a further preferred embodiment of a floor cleaning device according to the invention;
• 9 a schematic representation of a further preferred embodiment of a floor cleaning device according to the invention prior to connecting the second unit with the first unit unit;
• 10 : a representation accordingly 9 wherein the second device unit is connected to the first device unit;
• 11 : A plan view of the floor cleaning device in the illustration according to 9 ; and
• 12 : a representation accordingly 9 in a further preferred embodiment of a floor cleaning device according to the invention.

1 shows a schematic representation of a total with the reference numeral 10 occupied advantageous embodiment of a floor cleaning device according to the invention. The floor cleaning device 10 is designed self-propelled and self-steering and is used for autonomous cleaning of a floor surface 12 , To process on the floor surface 12 includes the floor cleaning device 10 one on a housing 14 arranged chassis 16 , The chassis 16 in the present case has two transverse to a longitudinal direction 18 spaced drive wheels 20 on, with a drive, not shown, a drive unit 22 form. The drive unit 22 is from a control unit 24 of the floor cleaning device 10 controllable.

The control unit 24 stands with a navigation unit 26 in active connection. In the navigation unit 26 For example, it will be discussed below, stored a map of an environment to be cleaned. The navigation unit 26 allows the floor cleaning device 10 to determine its position within the environment and thus within the map. Positions of the environment and the map can be obtained in this way from the floor cleaning device 10 be approached targeted.

Except over the drive wheels 20 supports the floor cleaning device 10 by means of a cleaning roller 28 on the floor surface 12 from. The cleaning roller 28 is part of a cleaning unit 30 of the floor cleaning device 10 ,

The cleaning roller 28 defines a rotation axis 32 , Which is present transversely to the longitudinal direction 18 is aligned. By means of a drive 34 can the cleaning roller 28 in rotation about the axis of rotation 32 be offset.

Present is the cleaning roller 28 as a wiping roller for the wet cleaning of the floor surface 12 designed. For this purpose, the cleaning roller 28 a spongy or cloth-like stocking, which can be moistened with a cleaning liquid as explained below. The trim is or includes, for example, a textile material, for example a microfiber textile material. Dirt on the floor surface 12 can under the rotation of the cleaning roller 28 and be replaced by wetting with the cleaning liquid and forms with this a dirty liquid.

The floor cleaning device 10 in the present case, this is in particular the simplified representations of 2 and 3 out, a first device unit 36 and a second device unit 38 ,

The first device unit 36 forms a kind of chassis or chassis for the second unit 38 by means of a recording unit 40 optionally with the first device unit 36 connected and can be solved by this, in the present case as coupling and uncoupling of the second unit unit 38 or as receiving and depositing the second device unit 38 designated.

The first device unit 36 includes, based on the longitudinal direction 18 that a mainstream direction 18 of the floor cleaning device 10 can represent a first page 42 and a second page 44 , The first page 42 corresponds to movement in the main movement direction 18 one front and the second side 44 a back of the first device unit 36 ,

The floor cleaning device 10 may alternatively be moved in the opposite direction. In this case, the first page 42 a back and the second side a front. The arrow 18 ' indicates the opposite main direction of movement.

The cleaning roller 28 is near the second page 44 arranged. Toward the first page 42 joins a recording room 46 of the housing in which the cleaning roller 28 is arranged, a recording 48 on the housing 14 at.

The recording 48 is, this is in particular 4 forth, between each laterally disposed portions of the housing 14 positioned and on their cleaning roller 28 facing side by a wall 50 of the recording room 46 limited. At the lateral sections of the housing 14 are the drive wheels 20 arranged.

Bottom side is the recording 48 a support element 52 on which the second device unit 38 im with the first device unit 36 connected condition can rest. At the first page 42 is the recording 48 open.

The first device unit 36 includes the cleaning unit 30 with the cleaning roller 28 , the drive unit 22 and the control unit 24 , The first unit forming a chassis 36 can work independently on the floor surface this way 12 regardless of whether the second unit of equipment 38 with the first device unit 36 connected or not.

The second device unit 38 in the present case comprises a cleaning liquid container 54 and a dirty fluid container 56 , simplistically become the cleaning fluid container 54 below as a container 54 and the dirty fluid container 56 as a container 56 designated.

The containers 54 and 56 are present in a common unit of the second unit 38 summarized, the container 54 above the container 56 is arranged. 1 shows schematically dashed container interior 58 of the container 54 respectively. 60 of the container 56 ,

The wall 50 in this case has a passage opening 62 on, for example, with a corresponding passage opening 64 an end wall 65 of the container 54 can curse. A fluid line 66 the first device unit 36 can through the through holes 62 . 64 through into the container interior 58 intervention. By means of a pump unit 68 the first device unit 36 can cleaning fluid from the container 54 through the fluid line 66 conveyed through and a wetting device 70 be supplied. About the wetting device 70 becomes the cleaning roller 28 moistened with the cleaning liquid.

In another, not shown embodiment can be provided that no pumping unit 68 is present and that cleaning fluid alone under the influence of gravity from the container 54 for wetting the cleaning roller 28 and / or the floor area 12 flows.

The container 56 points to the front wall 65 a dirt inlet opening 72 on, the cleaning roller 28 is facing. The dirt inlet 72 advantageously extends over the entire or substantially the entire length of the cleaning roller 28 , As far as possible, this is essentially the whole of the cleaning roller 28 absorbed dirt liquid through the dirt inlet opening 72 through into the container interior 60 transferred.

The dirt inlet 72 For example, with a corresponding passage opening of the wall 50 of the recording room 46 aligned, or the wall 50 does not extend down to the dirt inlet 72 ,

At the dirt inlet 72 is a sweeping threshold 74 arranged, for example, from a lower edge of the dirt inlet opening 72 towards the bottom surface 12 extends and is inclined. About the Kehrschwelle 74 In particular, larger and loose dirt particles can with the cleaning roller 28 in the container 56 to be swept. The arrow 76 indicates the direction of rotation of the cleaning roller 28 , in this case on the bottom side in the longitudinal or main movement direction 18 , The trimming of the cleaning roller 28 impinges on the floor surface 12 in the main movement direction 18 The friction is opposite. The cleaning roller 28 cleans in combination with the sweeping threshold 74 according to the "dustpan principle".

At the dirt inlet 72 is also a stripping element 78 arranged. The stripping element 78 engages in the stocking of the cleaning roller 28 one. Dirty liquid is thereby with the scraper element 78 from the stocking of the cleaning roller 28 stripped. The dirty liquid reaches a discharge element 80 at the dirt inlet 72 is arranged. About the discharge element 80 the dirty liquid gets into the container interior 60 directed.

Advantageously, the sweeping threshold extend 74 , the stripping element 78 and / or the discharge element 80 over the entire or substantially entire width of the dirt inlet opening 72 ,

At the floor cleaning device 10 are the sweeping threshold 74 , the stripping element 78 and the diverting element 80 Part of the second device unit 38 and, for example, at the recording room 46 facing end wall 65 established. When placing the second device unit 38 are therefore also the Kehrschwelle 74 , the stripping element 78 and the diverting element 80 discontinued.

The floor cleaning device 10 is presently free of a suction unit for sucking dirt into the container interior 60 ,

The aforementioned recording unit 40 includes at the floor cleaning device 10 two coupling elements 82 , The coupling elements 82 are transverse to the longitudinal direction 18 spaced apart and each in the region of the portions of the housing 14 arranged the driving wheels 20 take up ( 4 ). A respective coupling element 82 is a driving element 84 the recording unit 40 assigned. By means of the drive element 84 can the respective coupling element 82 relative to the first device unit 36 about a transversely oriented pivot axis 86 to be pivoted ( 1 to 3 ).

The coupling element 82 has in the present case with the drive element 84 coupled fixed end up and a free end. At the free end is the coupling element 82 hook-shaped and forms a hook 88 , Overall, the coupling element 82 for example, an angled shape with a first leg 90 and a second leg 92 have, wherein the first leg 90 on the drive element 84 is fixed and the second leg 92 the hook 88 forms.

By pivoting about the pivot axis 86 can the coupling element 82 be transferred from a connection position in a Ankoppelstellung and vice versa. In the connection position is the hook 88 closer to the first device unit 36 positioned, and by transferring in the Ankoppelstellung the hook 88 at a greater distance from the first unit 36 to be brought.

The coupling elements 82 are corresponding coupling elements 94 the second device unit 38 assigned. The coupling elements 94 are configured here as a pin-shaped projections 96 , The projections 96 are on outside 98 the second device unit 38 arranged, which are facing away from each other and the housing portions of the housing 14 facing, which are the drive wheels 20 take up.

In the interconnected state of the unit units is the unit unit 38 on the device unit 36 on. The coupling elements 82 take the connection position, with the hooks 88 with the projections 96 engaged ( 1 ). The device unit 38 is preferably positive fit in the receptacle 48 arranged.

To settle the second device unit 38 controls the control unit 24 the recording unit 40 on, the coupling elements 82 to transfer into the Ankoppelstellung (this is also a decoupling position). In the process, the coupling elements become 82 around the pivot axis 86 pivoted and the hooks 88 at a greater distance from the first unit 36 brought ( 2 ). The device unit 38 is from the support element 52 raised.

In addition, if necessary, the drive unit 22 be controlled, the first device unit 36 to move against the or in the main movement direction (indicated by an arrow 100 in 2 ).

Upon further pivoting of the coupling elements 82 arrives the second device unit 38 to rest on the floor surface 12 ( 3 ). The first device unit 36 can from the second device unit 38 be moved away.

Conversely, the second device unit 38 be absorbed by the fact that the first device unit 36 to the second device unit 38 is moved up to the hooks 88 in engagement with the projections 96 reach. The coupling elements 82 be by pivoting about the pivot axis 86 transferred from the coupling position in the connection position. This will be the second device unit 38 from the bottom surface 12 raised ( 2 ) and finally on the support element 52 the first device unit 36 discontinued ( 1 ) and is connected to this.

The following is with reference to the 5 and 6 to a preferred embodiment of a floor cleaning system according to the invention 110 received. The floor cleaning system 110 includes the floor cleaning device 10 , Schematically represented is the first device unit 36 and the second device unit 38 ,

The floor cleaning system 110 has a plurality of second device units 38 on, which may for example be identical or identical. In the present example are five second units 38 shown.

The floor cleaning system 110 is explained using the example of cleaning an environment 112 that have a plurality of spaces 114 . 116 . 118 . 120 . 122 and 124 includes. For example, the room 114 a living room, the rooms 116 and 118 are bedrooms, the room 120 is a corridor, the room 122 a bath and the room 124 a kitchen.

The rooms 114 to 124 may differ from one another in particular with respect to their size and / or the nature of the floor surface. For example, the room points 114 a parquet floor, the rooms 116 and 118 Laminate floor, and the rooms 120 to 124 Tiled floor. Under the rooms 114 to 124 In particular, a space can also be located which has a bottom surface that is insensitive to a cleaning fluid. These are, for example, tiles.

5 represents the situation before cleaning. Advantageously, the second units of equipment 38 that the rooms 114 to 124 are already assigned in the appropriate rooms 114 to 124 distributed. Because of the size are in the room 114 two second units 38 positioned in the rooms 116 and 118 there is a second device unit 38 , Another second device unit 38 is the rooms 120 . 122 and 124 assigned and, for example, in the room 124 positioned.

The amount of cleaning fluid and / or the type of cleaning fluid in the reservoir 54 a respective second device unit 38 is advantageous to the size of the room 114 to 124 and the nature of its bottom surface 12 customized. For example, the cleaning fluid is in the device units 38 to clean the room 114 rather less aggressive due to the wooden floor. The cleaning fluid for cleaning the rooms 120 to 124 Tiled floors can be more aggressive for more intensive cleaning.

The positions of the second units 38 are the floor cleaning device 10 known and in the map of the area 112 deposited. A second device unit 38 is already on the first device unit 36 added.

Alternatively or additionally, it is conceivable that the floor cleaning device 10 or the first device unit 36 For example, during a reconnaissance trip or during cleaning, the second units of equipment 38 by means of a sensor device 128 detected. Positions of the second units 38 can be deposited in the card. Already stored positions can be corrected if necessary.

For example, the floor cleaning device first cleans the room 114 , If it is determined that the supply of cleaning fluid in the container 54 is used up or the container 56 filled, the floor cleaning device exchanges 10 the second device unit 38 against another second device unit 38 out.

Accordingly, it is advantageous if the floor cleaning device 10 a sensor device 126 having. With the sensor device, in particular, the amount of cleaning liquid in the container 54 be recorded. Alternatively or additionally, with the sensor device, the amount of dirty liquid in the container 56 be recorded. The sensor device is connected to the control unit 24 coupled, and depending on the signal of the sensor device, the control unit 24 decide if the second device unit 38 against another second device unit 38 should be replaced.

Following the cleaning of the room 114 cleans the floor cleaning device 10 with repeated change of the second units 38 the rooms 116 to 124 , In each case, as explained above, the corresponding second device unit 38 used, which is assigned to the respective room.

The 6 shows the situation after completion of the cleaning. The second units of equipment 38 are parked at a specific location. The parking position can be specified.

In particular, the second device units 38 parked together at the same position, here inside the room 124 , As a parking position in particular a space is used, which has a relation to the cleaning liquid insensitive bottom surface.

Notwithstanding the foregoing may be provided that the second units of equipment 38 are arranged in a position collected before cleaning, for example in a room, such as the room 124 ,

The second units of equipment 38 could be deposited after cleaning in the room they were used to clean.

It can be provided that an operator 172 the floor cleaning device 10 transmits a cleaning order for at least one room, for example on a control unit 174 of the floor cleaning device 10 or on a portable accessory 176 For example, a smartphone that is in data communication with the floor cleaning device 10 stands. The first device unit 36 can be a second device unit 38 to process the cleaning job and perform this. For example, the second device unit 38 taken from the position at which the second units of equipment 38 are collected.

Hereinafter, reference is made to further advantageous embodiments of the floor cleaning device according to the invention with reference to 7 to 12 received in which the floor cleaning devices are shown simplified. The with the floor cleaning device 10 achievable benefits can also be achieved with these floor cleaning devices. To avoid repetition, reference may be made to the above statements. Only the essential differences are explained. For identical or equivalent features and components identical reference numerals are used.

The below-described floor cleaning devices can be used to form advantageous embodiments of a floor cleaning system according to the invention, wherein the example of the floor cleaning system 110 mentioned advantages can also be achieved.

The floor cleaning device 130 according to 7 is largely identical to the floor cleaning device 10 built up. Deviating from this are the Kehrschwelle 74 , the stripping element 78 and the diverting element 80 from the first device unit 36 includes and, for example, on the wall 50 established. When connecting the second device unit 38 can the diverting element 80 through the dirt inlet 72 in the container interior 60 are introduced (not shown).

This in 8th schematically shown in plan view floor cleaning device 132 is also largely identical to the floor cleaning device 10 educated. At the floor cleaning device 132 is in place of the two coupling elements 82 only one coupling element 134 the recording unit 40 provided, as well as a corresponding coupling element 136 on the second device unit 38 , On the coupling element 134 can with a drive element 84 are acted upon, and the coupling element 136 is also an advantage, for example 96 designed.

The coupling element 134 is in the transverse direction of the floor cleaning device 132 arranged approximately centrally. The second device unit 38 has a recess for this purpose 138 on, in which the coupling element 134 intervenes.

The containers 54 . 56 are in plan view, as indicated by a dashed contour, preferably approximately U-shaped to the space on both sides of the coupling element 134 and the recess 138 best exploit. The dirt inlet 72 can be in the area of the recess 138 be interrupted.

The 9 to 11 show one with the reference numeral 140 occupied advantageous embodiment of a floor cleaning device according to the invention.

At the floor cleaning device 140 includes the receiving unit 40 corresponding slide-on elements 142 at the first device unit 36 and 144 on the second device unit 38 ,

The slide-on elements 142 are configured here as tongue-shaped projections 146 , In the present case are two projections 146 provided, which are spaced apart in the transverse direction and for example between the drive wheels 20 are arranged ( 11 ).

The slide-on elements 142 are presently formed as recesses 148 on an underside of the second device unit 38 , Openings of the recesses 148 are tapered in the insertion direction, whereby the coupling of the second device unit 38 by the resulting centering action of the projections 146 at the recesses 138 is simplified.

For coupling, the first unit moves 36 towards the second device unit 38 until the projections 146 with sliding surfaces 150 on tops of the recesses 148 attacks. Upon further movement of the first device unit 36 As a result, it becomes the second device unit 38 raised. A support element 152 at the first device unit 36 opposite side of the second unit 38 can be provided, for example, over which the second device unit 38 can support, for example, on a wall. Continuing to move the first unit of equipment 36 arrives the second device unit 38 in the recording 48 , Then the floor cleaning appliance can start cleaning ( 10 ).

It can in particular be a connecting device 154 the recording unit 40 for non-positive and / or positive connection of the unit units 36 . 38 be provided when the second device unit 38 reached their target position. The connection device 154 is in particular from the control unit 24 controllable. For example, the existing connection of the device units 36 . 38 under the control of the control unit 24 for settling the second device unit 38 be solved. For this purpose, it can also be provided that the second device unit 38 in from the first device unit 36 directional direction is applied, such as by means of an elastic element (not shown).

9 shows by way of example that also in the floor cleaning device 140 the containers 54 . 56 are arranged one above the other.

An alternative arrangement is in 11 shown schematically. Here is the container 56 for dirty liquid on one of the cleaning roller 28 facing side of the second device unit 38 arranged. The container 54 for cleaning fluid is on one of the cleaning roller 28 opposite side of the second unit 38 arranged. However, a container section is 160 of the container 54 provided, which faces up to the first unit unit end wall 65 extends to the removal of cleaning fluid from the container 54 to facilitate.

For removal of cleaning fluid, the unit units 36 and 38 corresponding connection elements 162 . 164 on. For example, the connection element 162 a nipple-shaped projection on the first unit unit 36 which is in one of the connection element 164 formed recess on the second unit 38 engages to form a fluid connection from the container 54 to the in the 9 to 12 not shown wetting device 70 ,

The floor cleaning device 170 according to 12 is similarly designed as the floor cleaning device 140 , Deviating from this is a wedge-shaped Aufgleitelement 156 the first device unit 36 provided and a corresponding Aufgleitelement 158 on the second device unit 38 , The sliding element 156 is a projection, and the Aufgleitelement 158 a recess.

Incidentally, the recording of the second device unit works 38 and its settling as above the example of the floor cleaning device 140 described.

It is understood that the variants of the arrangement of containers 54 . 56 may also be provided in the other floor cleaning devices described here. In a corresponding manner, these floor cleaning devices connection elements 162 . 164 exhibit. The Kehrschwelle 74 , the stripping element 78 and the diverting element 80 may be provided on all floor cleaning appliances, either on the first appliance unit 36 or at the second device unit 38 ,

LIST OF REFERENCE NUMBERS

10

Floor cleaning device

12

floor area

14

casing

16

landing gear

18

longitudinal direction

20

drive wheel

22

drive unit

24

control unit

26

navigation unit

28

cleaning roller

30

cleaning unit

32

axis of rotation

34

drive

36

first device unit

38

second device unit

40

recording unit

42

first page

44

second page

46

accommodation space

48

admission

50

wall

52

support element

54

The cleaning liquid container

56

Dirty liquid container

58

Container interior

60

Container interior

62

Through opening

64

Through opening

65

bulkhead

66

fluid line

68

pump unit

70

Wetting device

72

Dirt inlet

74

sweeping sill

76

direction of rotation

78

stripping element

80

diverter

82

coupling element

84

driving element

86

swivel axis

88

hook

90

first leg

92

second leg

94

coupling element

96

head Start

98

outside

100

arrow

110

Floor Cleaning System

112

Surroundings

114, 116, 118, 120, 122, 124

room

126

sensor device

128

sensor device

130

Floor cleaning device

132

Floor cleaning device

134

coupling element

136

coupling element

138

recess

140

Floor cleaning device

142

Aufgleitelement

144

Aufgleitelement

146

head Start

148

recess

150

sliding surface

152

supporting

154

connecting device

156

Aufgleitelement

158

Aufgleitelement

160

container section

162

connecting element

164

connecting element

170

Floor cleaning device

172

operator

174

operating unit

176

attachment

Claims (34)

Self-propelled and self-steering floor cleaning appliance, comprising a control unit (24), a drive unit (22) for moving the floor cleaning appliance (10; 130; 132; 140; 170) on a floor surface (12) to be cleaned, a cleaning unit (30) with a drivable cleaning roller (28) for wet cleaning of the bottom surface (12), a cleaning liquid container (54) for cleaning liquid, and a dirty liquid container (56) for dirty liquid received from the bottom surface (12), wherein the floor cleaning device (10; 130; 132; 140; first appliance unit (36) and a second appliance unit (38), wherein the first appliance unit (36) comprises the drive unit (22) and the cleaning unit (30) and is movable separately from the second appliance unit (38), the second appliance unit ( 38) comprises the cleaning fluid reservoir (54) and / or the dirty fluid reservoir (56), and wherein the floor cleaning device (10; 130; 132; 140; 170) comprises a receiving unit (50) which can be activated, in particular, by the control unit (24), for connecting the second appliance unit (38) to the first appliance unit (36) and releasing the appliance units (36, 38) from one another , Floor cleaning device after Claim 1 , characterized in that the second device unit (38) comprises the cleaning liquid container (56) and the dirty liquid container (54), wherein the cleaning liquid container (54) above the dirty liquid container (56) is arranged. Floor cleaning device after Claim 1 , characterized in that the second device unit (38) comprises the cleaning liquid container (54) and the dirty liquid container (56), wherein these are arranged side by side on the second device unit (38), in particular that the dirty liquid container (56) on one of the cleaning roller (56). 28) facing side and the cleaning liquid container (54) on one of the cleaning roller (28) facing away from the second device unit (38) are arranged. Floor cleaning appliance according to one of the preceding claims, characterized in that the first device unit (36) comprises or forms a support element (52) and that the second device unit (38) rests on the support element (52). Floor cleaning appliance according to one of the preceding claims, characterized in that the second device unit (38) by means of the receiving unit (40) of the bottom surface (12) can be raised and on the first unit unit (36) is deductible and vice versa. Floor cleaning appliance according to one of the preceding claims, characterized in that the first appliance unit (36) comprises the receiving unit (40). Floor cleaning appliance according to one of the preceding claims, characterized in that the receiving unit (40) comprises at least one coupling element (82; 134) which can be coupled to the second device unit (38) for receiving, and at least one associated with the coupling element (82; 134) Drive element (84), for its transfer from a Ankoppelstellung in a connecting position, wherein the coupling element (82; 134) in the Ankoppelstellung relative to the first unit unit (36) is further spaced than in the connecting position. Floor cleaning device after Claim 7 characterized in that the at least one coupling element (82; 134) is at least partially hook-shaped or comprises or forms a hook (88) engageable with a corresponding coupling element (94; 136) of the second appliance unit (38) for receiving is. Floor cleaning device after Claim 7 or 8th , characterized in that the at least one coupling element (82; 134) is pivotally mounted on the first device unit (36) by means of the at least one drive element (84). Floor cleaning device according to one of Claims 7 to 9 characterized in that the receiving unit (40) comprises two coupling elements (82) spaced transversely of the longitudinal direction (18) of the floor cleaning appliance (10; 130), the second appliance unit (38) being disposed between the coupling elements (82) and the coupling elements (82) engage the second appliance unit (38) on opposite outer sides (98). Floor cleaning device according to one of Claims 7 to 9 , characterized in that a coupling element (134) is provided, which is arranged transversely to the longitudinal direction (18) of the floor cleaning device (132) in the middle or substantially in the middle of the floor cleaning device (132), wherein the second device unit (38) Recess (138), in which engages the coupling element (134). Floor cleaning device after Claim 11 , characterized in that the cleaning liquid container (54) and / or the dirty liquid container (56) is configured in a U-shaped plan view and on both sides of the recess (138) arranged container sections. Floor cleaning appliance according to one of the preceding claims, characterized in that the receiving unit (40) on the first appliance unit (36) comprises at least one slide-on element (142; 156) which is connected to a corresponding slide-on element (144; 158) of the second appliance unit (38) Pickup couples as the first device unit (36) moves toward the second device unit (38). Floor cleaning device after Claim 13 , characterized in that the slide-on elements (142, 144; 156, 158) are designed as a tongue-like projection (146) on an appliance unit (36) and corresponding recess (148) on the other appliance unit (38), in particular that the projection (146 ) is arranged on the first device unit (36) and the recess (148) on the second device unit (38). Floor cleaning device after Claim 13 or 14 , characterized in that on the first unit (36) and the second unit (38) each two transverse to the longitudinal direction (18) of the floor cleaning device (140) spaced from each other Aufgleitelemente (142, 144) are provided. Floor cleaning appliance according to one of the preceding claims, characterized in that the first appliance unit (36) comprises a wetting device (70) for applying cleaning liquid to the cleaning roller (28). Floor cleaning appliance according to one of the preceding claims, characterized in that the first appliance unit (36) comprises a pump unit (68), by means of the cleaning liquid from the cleaning liquid container (54) can be conveyed. Floor cleaning appliance according to one of the preceding claims, characterized in that the second appliance unit (38) comprises the cleaning liquid container (54) and in that the first appliance unit (36) comprises a fluid line (66) which opens into an opening (62) of the cleaning liquid container (54). intervenes. Floor cleaning device according to one of Claims 1 to 17 characterized in that the second device unit (38) comprises the cleaning fluid reservoir (54) and that connection elements (160, 162) arranged on the first and the second device units (36, 38) are in fluid communication via the cleaning fluid from the cleaning fluid reservoir (54 ) is removable. Floor cleaning appliance according to one of the preceding claims, characterized in that the floor cleaning device (10; 130; 132; 140; 170) is free of a suction unit for receiving the dirty liquid from the floor surface (12). Floor cleaning appliance according to one of the preceding claims, characterized in that the floor cleaning device (10; 130; 132; 140; 170) comprises a sweeping threshold (74) arranged at a dirt entry opening (72) of the dirty liquid container (56), over which dirt from the cleaning roller passes (28) is swept into the dirty liquid container (56). Floor cleaning appliance according to one of the preceding claims, characterized in that the floor cleaning appliance (10; 130; 132; 140; 170) comprises a scraper element (78) arranged on a dirt entry opening (72) of the dirty liquid container (56) and connected to the cleaning roller (28). engaged. Floor cleaning appliance according to one of the preceding claims, characterized in that the floor cleaning device (10; 130; 132; 140; 170) has a discharge element (80) for dirty liquid from the cleaning roller (28) arranged on a dirt entry opening (72) of the dirty liquid container (56) includes the dirty liquid container (56). Floor cleaning device according to one of Claims 21 to 23 , characterized in that the sweeping threshold (74), the stripping element (78) and / or the discharge element (80) are arranged on the first appliance unit (36), or that the second appliance unit (38) comprises the dirty liquid container (56) and the Kehrschwelle (74), the stripping element (78) and / or the discharge element (80). Floor cleaning appliance according to one of the preceding claims, characterized in that the floor cleaning appliance (10; 130; 132; 140; 170) comprises a navigation unit (26) in which a map of an environment to be cleaned (112) is deposited, the map comprising information about the position of the second device unit (38), and that the first device unit (36) for receiving the second device unit (38) can approach the position. A floor cleaning system comprising a floor cleaning apparatus (10; 130; 132; 140; 170) according to any one of the preceding claims and at least one further second unit (38), wherein a respective second unit (38) is selectively receivable and settable with the first unit (36) is. Floor cleaning system after Claim 26 , characterized in that the second device units (38) are configured identically. Floor cleaning system after Claim 26 or 27 , characterized in that the second device units (38) each comprise a cleaning liquid container (54), wherein the amount and / or condition of the cleaning liquid of the second device units (38) differ from each other. Floor cleaning system according to one of Claims 26 to 28 characterized in that the second device units (38) are associated with different spaces (114, 116, 118, 120, 122, 124) or spatial regions of the environment (112) that differ in size and / or texture of a respective floor surface (112). 12) differ from each other. Floor cleaning system according to one of Claims 26 to 29 , characterized in that the second device units (38) are collected after processing a cleaning order for the environment to be cleaned (112) collected at a predetermined position. A method of cleaning a floor surface with a cleaning system according to any one of Claims 26 to 30 , characterized in that with the first device unit (36) successively a plurality of second device units (38) are received and the bottom surface is cleaned. Method according to Claim 31 , characterized in that the second device units (38) are each assigned predetermined spaces (114, 116, 118, 120, 122, 124) or spatial areas, in particular that the amount and / or nature of the cleaning liquids of the second units (38) from each other and preferably adapted to the size and / or nature of a respective floor surface (12) of the room (114, 116, 118, 120, 122, 124) or room area. Method according to Claim 31 or 32 , characterized in that the second device units (38) are positioned before cleaning on or in the respective space to be cleaned (114, 116, 118, 120, 122, 124) or space area. Method according to one of Claims 31 to 33 , characterized in that the second unit units (38) are collected collected after cleaning at a predetermined position.

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