EP3911212A1

EP3911212A1 - Floor cleaning device

Info

Publication number: EP3911212A1
Application number: EP19701599.3A
Authority: EP
Inventors: Melanie RITSCHER; Alexander GILICH
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2019-01-18
Filing date: 2019-01-18
Publication date: 2021-11-24
Anticipated expiration: 2039-01-18
Also published as: CN112911983B; EP3911212B1; US20210338035A1; CN112911983A; WO2020147970A1

Abstract

The invention relates to a floor cleaning device. The floor cleaning device comprises: a liquid container (24) which comprises a container wall (34) and a container interior (36); and a tank-flushing apparatus (48) which comprises an inlet (116) and outlets (100) which are flow-connected to the inlet and through which flushing liquid can be dispensed into the container interior (36). The tank-flushing apparatus (48) comprises a flushing duct (78) which can be loaded via the inlet (116) and comprises a first duct part (80) and a second duct part (82) which is joined to the first duct part, the two duct parts forming between them a duct interior (98) of the flushing duct through which the flushing liquid can flow, and the outlets (100) are situated on the second duct part (82) and are flow-connected to the duct interior (98).

Description

FLOOR CLEANING DEVICE

The present invention relates to a floor cleaning device comprising a liquid container, which comprises a container wall and a container interior, a tank flushing device, which comprises an inlet and outlets in flow communication therewith, through which

Flushing liquid can be dispensed into the interior of the container.

Such a floor cleaning device, designed as a scouring machine, is described in DE 10 2010 038 422 A1. An external supply line can be connected to the inlet, for example a hose line provided with a standard connecting element. Flushing liquid, in particular water, can be supplied to the tank flushing device. The tank flushing device comprises a hose line designed as a ring line, on which a plurality of outlets are arranged. The rinsing liquid is sprayed onto the side walls of a dirty liquid container, whereby they are rinsed from top to bottom and soiling can be removed via an outlet of the dirty liquid container.

The floor cleaning device described in DE 10 2010 038 422 A1 has proven itself in practice. Nevertheless, it is desirable to provide a floor cleaning device with an improved tank flushing device.

The object of the present invention is to provide a floor cleaning device of the type mentioned at the outset, the tank flushing device of which is designed in a structurally simpler manner.

This object is achieved by a floor cleaning device according to the invention, comprising a liquid container which comprises a container wall and a container interior, a tank flushing device which comprises an inlet and outlets in flow communication therewith, through which can be dispensed into the interior of the container by rinsing liquid, the

Tank flushing device comprises a flushing channel which can be acted upon via the inlet and which comprises a first channel part and a second channel part attached to it, which form a channel interior of the flushing channel through which the flushing liquid can flow, and wherein the outlets are arranged on the second channel part and with it Canal interior are fluidly connected.

In the floor cleaning device according to the invention, the flushing channel can be formed in a structurally simple manner by providing two channel parts joined to one another, which define the channel interior between them. The channel parts form channel walls of the flushing channel. Flushing liquid flows from the inlet to the outlets through the channel interior and is released there. It has been shown in practice that a constructional simplification can be achieved by the duct parts that can be joined together. For example, in a preferred embodiment of the floor cleaning device, the container wall of one of the channel parts can be formed, which will be discussed below.

The floor cleaning device according to the invention can be designed differently. For example, it is a ride-on device, a stand-up device or a walk-behind device.

The floor cleaning device can in particular be a scrubber drier.

The floor cleaning device in particular comprises at least one cleaning tool for cleaning the floor surface. The cleaning tool comprises, for example, a cleaning head with at least one drivable brush roller or one drivable disc brush.

The floor cleaning device can preferably pick up dirty cleaning liquid (dirty liquid) from the floor surface and into one Transfer the dirty liquid container. The dirty liquid container can be, for example, the liquid container of the floor cleaning device according to the invention. To take up the dirty liquid from the floor, the floor cleaning device can comprise, for example, a dirt pick-up device which can have a suction bar and a suction unit for pressurizing the interior of the container and the suction bar with underpressure.

The container wall comprises, for example, a bottom wall of the liquid container, a peripheral wall in particular and a top wall.

The outlets are preferably directed towards the container wall, for example onto a side wall and / or a bottom wall or at least sections of it. For example, the outlets are directed toward portions of the container wall spaced from the bottom wall. In this way, dirt particles adhering to the container can be captured by the washing liquid and washed away.

It is advantageous if the tank flushing device is arranged on a ceiling wall, in particular on a hinged lid, of the liquid container. This makes it easier, for example, to align the rinsing liquid with the sections of the side wall located at the top and located at the bottom wall.

In a preferred embodiment of the floor cleaning device, the container wall can comprise a ceiling wall of the liquid container, in particular as part of a hinged lid of the liquid container.

The lid can preferably be transferred from a closing position closing the container interior on the top to an opening position in which an engagement opening in the container interior is at least partially released. In a preferred embodiment of the floor cleaning device, it is advantageous if the container wall, in particular the ceiling wall, comprises or forms the first channel part. A separate first channel part can be saved in this way. This simplifies the design of the tank flushing device.

In a preferred embodiment of the floor cleaning device, it is advantageous if the container wall, in particular the ceiling wall, has a double wall, and if the channel parts are arranged between spaced apart walls of the container wall, the second channel part having recesses in the wall facing the container interior reaches through or intervenes in this. In the area of the outlets, for example, recesses of the latter wall formed by openings are present, and the outlets pass through the openings.

It is expedient if the first channel part forms a receiving part and the second channel part forms an insert part, the insert part being received in a recess in the receiving part. The second channel part can be received as an insert in the recess of the first receiving part, which forms a receiving part. The channel interior is formed between the receiving part and the insert part. Such an embodiment has a structurally simple design and also offers the advantage of simple assembly of the tank flushing device.

The recess is formed, for example, by shaping the first channel part, the latter being manufactured, for example, as a molded plastic part. When molding the plastic molded part, the recess is formed in the same work step, so that further manufacturing steps are not necessary.

At the recess, for example, at least one contact area can be arranged, on which the insert rests and is supported. The recess is groove-shaped, for example, the direction of the groove defining the course of the flushing channel.

The tank flushing device preferably comprises a holding part which at least partially covers the second channel part and is connected to the first channel part, the holding part comprising recesses into which the outlets engage or which pass through the outlets. The second duct part can be held in position on the first duct part by means of the holding part. For example, the holding part covers the insert part accommodated in the receiving part. The recesses are, for example, openings in the holding part.

The holding part can be connected to the first channel part, for example, by force and / or positive locking. A fixation by jamming, locking and / or screwing is conceivable, for example.

The holding part is preferably designed in the form of a plate. It is particularly advantageous if the holding part is arranged in a plane defined by the first channel part, in particular the receiving part. In this way, for example, a container wall with the least possible unevenness or corrugations can be formed. This makes it more difficult for dirt particles to adhere to the container wall.

The holding part is fixed, for example, at the edges of a recess in the first channel part, in which the second channel part is received.

In a preferred embodiment of the floor cleaning device according to the invention, it is advantageous if the holding part is fixed on the container wall of the liquid container, in particular on a ceiling wall, the container wall forming a receiving part for the second channel part.

In a preferred embodiment of the floor cleaning device according to the invention, it is advantageous if the container wall, in particular a ceiling wall of the liquid container, forms the holding part, the ca nalteile are preferably arranged between two walls of the container wall. The first channel part and the second channel part are accommodated between the walls. A wall can also form the holding part, which is fixed on the first holding part.

Passages can be formed in the second channel part, which form the outlets.

It can be provided that elements are formed in passages in the second channel part, which form the outlets. By means of the nozzle elements, shaped jets of rinsing liquid can be emitted into the container interior in a predetermined form. Accordingly, the second channel part can form a nozzle receiving part.

The nozzle elements are held in the passages, for example, by force and / or positive locking, for example by jamming and / or locking.

In a preferred embodiment, the nozzle elements are flat jet nozzles or form such flat jet nozzles.

It can be provided that the orientation of the nozzle elements can be changed relative to the second channel part. For example, the operator can change the orientation of the nozzle elements during operation, without disassembly, relative to the second channel part.

Additionally or alternatively, it is conceivable that the operator detaches the second channel part from the first channel part and connects the channel parts together again after changing the orientation of the nozzle elements.

It is expedient if the nozzle elements are inserted into the second channel part from a side facing the first channel part and protrude with an outlet section forming the outlet beyond the second channel part. On in this way the nozzle elements assume a defined position in the second channel part. For example, the nozzle elements can be supported on the edges of the passages and preferably seal so that the flushing liquid can be dispensed through the nozzle elements.

The second channel part can in particular be non-positively and / or positively received in the first channel part, in particular by jamming and / or latching.

It proves to be advantageous if the second channel part is held on the first channel part via a press fit. In this way, for example, special connecting elements can be saved.

Particularly in combination with the last-mentioned advantageous embodiment, it is advantageous if the second channel part is made of a deformable, elastically crushable material. For example, the second channel part is fixed as an insert part via a press fit in the first channel part, which forms a receiving part.

It can be provided that the first channel part is made of a rigid, non-deformable material. "Rigid, non-deformable" is to be understood here in particular in relation to the nature of the second channel part.

The second channel part advantageously lies in a sealing manner on the first channel part and thereby seals the channel interior. For this purpose, the second channel part is preferably deformable and elastically crushable. A separate seal between the first channel part and the second channel part can be saved.

The second channel part advantageously has an oversize with respect to the recess formed on the first channel part, as a result of which the second channel part can be held on the first channel part by means of a press fit. The second channel part advantageously has sealing beads arranged on side walls, or sealing beads are arranged on side walls of the second channel part, which lie sealingly on side walls of the first channel part.

It is advantageous if the second channel part does not protrude beyond the first channel part, except in the area of the outlets. Apart from the outlets, the second channel part can in particular be completely accommodated as an insert part in the first channel part.

The second channel part is preferably designed in one piece, whereby a structural simplification can be achieved.

In a preferred embodiment it can be provided that the second channel part is configured in several parts.

It is advantageous if the second channel part can be arranged on the first channel part in only one relative arrangement. This facilitates the assembly of the tank flushing device, since the relative arrangement of the channel parts is immediately apparent to the fitter.

In particular, the second channel part can be inserted into the receiving part in only one orientation if the first channel part forms a receiving part.

It can be advantageous if the flushing channel does not form a self-contained ring line. In the present case, this can be understood in particular to mean that the rinsing channel has a beginning and an end.

It can be expedient if the rinsing channel has at least one branch on which two or more segments of the rinsing channel which are connected to one another in flow terms are aligned at an angle to one another.

It can be provided that the second channel part has outlet sections and connecting sections connecting them, the outlets at the outlets let sections are arranged, and if the second channel part on the Ver connecting sections has a lower material thickness and in particular width than at the outlet sections.

For example, the material thickness of the second channel part around passages of the outlet sections is approximately twice as large as that of section sections.

In a preferred embodiment of the floor cleaning device, the outlets are arranged, for example, in one plane or essentially in one plane.

For example, the flushing channel has the inlet.

In a preferred embodiment it can be provided that the tank flushing device comprises or forms a feed channel which is in flow connection with the flushing channel and has the inlet.

It can prove to be advantageous if the feed channel is at least partially formed by the container wall and opens into the rinsing channel. For example, the feed channel is formed at least in sections in the container wall, in particular the ceiling wall.

Alternatively, it can be provided that the supply channel is or comprises a hose line which is connected to the flushing channel.

The feed channel preferably has a connection element for connecting an external supply line. This is in particular a standard connection element such as a connection nipple or a connection socket of a plug-in coupling. The connection element can in particular form the inlet. In a preferred embodiment, the connecting element is arranged outside the liquid container, in particular on a housing having or forming the liquid container. As a result, the operator can connect the supply line in an easy-to-use manner for rinsing the liquid container without opening it.

It can be provided that a cover element for the connection element is arranged on the housing, for example in the form of a pivotable or sliding cover.

In a preferred embodiment, the connection element can be arranged on a side of the container wall facing the container interior, in particular the top wall of the liquid container. For example, the ceiling wall is raised to connect the supply line to the connection element. After lowering, the ceiling wall can rest on the supply line, so that the liquid container is at least partially open. In the event of a rising level in the liquid container, for example due to a blockage at the outlet of the liquid container, rinsing liquid can overflow through the opening.

It can be provided that the container wall has or forms a ventilation opening and / or a ventilation channel. For example, a ventilation duct is formed in the container wall, in particular the ceiling wall, via which the container interior is connected to the atmosphere and which forms a ventilation opening arranged on the housing. When flushing the container, air can escape to equalize the pressure. The vent opening can in particular also serve as an overflow opening from which the washing liquid can leak.

As already mentioned, the floor cleaning device can be, for example, a ride-on device, a stand-up device or a follow-up device. A preferred embodiment of the floor cleaning device is for

Example of a scrubber drier.

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

Figure 1 is a perspective view of a floor cleaning device according to the invention;

Figure 2 is an exploded perspective view of a lid of the floor cleaning device of Figure 1;

Figure 3 is a longitudinal sectional view of a rear portion of the floor cleaning device taken along the line 3-3 in Figure 1, the one

Shows dirty liquid container in a sectional view;

Figure 4 is an enlarged view of detail A in Figure 3;

FIG. 5: a further longitudinal sectional view of the liquid container of the floor cleaning device in a detailed illustration;

Figure 6 is an enlarged view of detail B in Figure 5;

Figure 7 is a perspective view of components of a tank flushing device of the floor cleaning device of Figure 1;

Figure 8 is a perspective view of another preferred embodiment of the floor cleaning device according to the invention;

Figure 9 is a perspective view of a lid of the floor cleaning device of Figure 8 in an exploded view; Figure 10 is a bottom view of the lid of Figure 9;

Figure 11 is a sectional view taken along line 11-11 in Figure 10;

Figure 12 is a sectional view taken along line 12-12 in Figure 10; and

Figure 13 is a sectional view taken along line 13-13 in Figure 10.

FIG. 1 shows a perspective representation of an advantageous embodiment of a floor cleaning device according to the invention (referred to below as device 10), which is generally designated by reference number 10. The device 10 is designed as a scrubber drier 12, the surface 14 is used for cleaning a floor. In the present case, the device 10 is a ride-on device that is controlled by an operator while seated. However, the prior invention is not limited to ride-on devices and scrubbing machines 12.

The device 10 comprises a chassis 16, on the underside of which a chassis 18 for moving on the floor surface 14 is arranged. A housing 20 of the device 10 is arranged on the top of the chassis 16. The housing 20 forms two containers for liquid, namely a storage container 22 for a cleaning liquid, in particular water, and a dirty liquid container 24 into which dirty liquid taken up by the bottom surface 14 is transferred.

The dirty liquid container 24 is hereinafter referred to simply as container 24 and is a liquid container in the sense of the present inven tion.

To clean the bottom surface 14, the device 10 comprises a cleaning tool 26 which has a cleaning head. The cleaning head includes, for example, this is not shown, at least one drivable cleaning roller or at least one disk-shaped cleaning element. It For example, a bristle trim, a sponge-like trim or a cloth-like trim can be provided. In the present case, the cleaning head has, for example, two brush rollers.

To take up the mixture of detached dirt and cleaning liquid (dirty liquid), the device 10 has a dirt holding device 28. The dirt pick-up device 28 comprises a suction bar 30 and a suction unit 32 which is shown schematically in FIG. 1. By means of the suction unit 32, the container 24 and the suction bar 30 are subjected to a vacuum to suck off the dirty liquid.

The container 24 comprises a container wall 34 and a container interior 36. The container wall 34 encloses the container interior 36.

The container wall 34 comprises a bottom wall 38, a side wall 40 and a top wall 42. In the present case (FIG. 3) the container 24 has a cross section approximately in the shape of an "L" which is upside down. The bottom of the container 24 is recessed in the rear area, so that a front portion of the side wall 40 runs substantially horizontally and forms a bottom of the container 24 in sections.

The top wall 42 is part of a lid 44. The lid 44 is, moreover, pivotally mounted on the housing 20 about a pivot axis 47 oriented essentially in a transverse direction 46. The lid 44 can be closed from a closed position (FIG. 3) closing the interior 36 of the container. pivots and be transferred into an open position, not shown in the drawing. In the open position, an engagement opening in the loading container interior 36 is released.

The device 10 comprises a tank flushing device 48 in order to clean the container 24. In particular, dirt adhering to the side wall 40 can be taken from the container interior 36 by flushing liquid and carried along. Via an outlet 50 arranged on the floor the container 24 can be flushed with entrained dirt particles.

The tank flushing device 48 is arranged on the container wall 34, in the present case in particular on the ceiling wall 42.

A recess 52 is formed on the underside of the ceiling wall 42. From the recess 52 is a formation that can be manufactured in the manufacture of the molded plastic wall 42.

The recess 52 is groove-shaped, whereby it retreats in relation to a wall 54 formed by the ceiling 42. Edges of the recess 52 are identified by reference numeral 56.

In the present case, the recess 52 is not ring-shaped or closed in itself, but it has a beginning 58 and an end 60. In a plan view from below of the ceiling wall 42, the recess is approximately C-shaped, a first branch 62 and a second branch 64 being arranged between the beginning 58 and the end 60 in the direction of the recess 52. A segment 66 of the recess 52 extends from the beginning 58 to the end 60, and segments 68 and 70 branch off from the branches 62 and 64. In the present case, these are oriented at an angle to segment 66 and are designed to be relatively short. This configuration, like the shape of the recess 52 itself, could also be different.

In the present case, the recess 52 is shaped and arranged in such a way that it encloses the arrangement held on the cover 44 with a nursing opening and float system 53, so that the cover 44 is of compact construction and nevertheless a tank flushing device 48 can be provided, the outlets of which are explained below a large area of the top wall 42 distributed who can. The recess 52 comprises a plurality of widened sections 72 on the segments 66, 68 and 70. On the sections 72, the recess 52 is widened approximately in the manner of a trough, the recess 76 formed by the groove in the recess 52 forming an abutment region 74. The contact area 74 surrounds the depression 76, which is also present between the sections 72 (FIGS. 4 and 6).

The tank flushing device 48 comprises a flushing channel 78. The flushing channel 78 is formed by a first channel part 80 and a second channel part 82 attached to it. The channel parts 80, 82 form channel walls of the flushing channel 78. In the present case, the first channel part 80 is in particular the container wall 34, in particular the ceiling wall 42. The second channel part 82 is formed separately from the first channel part 80.

In the device 10, the channel part 80 is rigid, through the produc tion of the ceiling 42 as a molded plastic part. The channel part 80 forms a receiving part 84 for the channel part 82, which can be inserted as an insert part 86 in the receiving of the receiving part 84. In particular, the insert part 86 can be inserted into the recess 52.

The shape of the insert 86 is adapted to the shape of the receiving part 84 and in particular to the shape of the recess 52 in particular. The shapes of both components of the tank flushing device 48 match and are in particular designed such that the insert part 86 can be inserted into the receiving part 84 in only one orientation. Accordingly, the channel parts 80, 82 have a predetermined relative orientation. This greatly simplifies the installation of the tank flushing device 48.

In view of the fact that the shape of the insert 86 is adapted to the shape of the recess 52, the rinsing channel 78 has corresponding branches at the locations of the branches 62, 64 and segments which correspond to the segments 66, 68 and 70. The insert 86 is made in the present case from a deformable and in particular special elastically crushable material, for example a rubber material. The insert 86 is dimensioned such that it has a little oversize compared to the dimensions of the recess 52. This gives the possibility of fastening the insert part 86 to the receiving part 84 by jamming via a press fit. The insert 86 is inserted into the recess 52 from deformation and is positively received in the recess 52. The channel parts 80, 82 are thereby joined together.

The insert 86 has sealing beads 90 on the side walls 88. The sealing beads 90 seal the flushing channel 78 with respect to the container interior 36. Alternatively or in addition, separate sealing elements can be provided.

The insert 86 is formed in one piece in the present case. A multi-part configuration is also conceivable.

As already mentioned, the shape of the insert part 86 is adapted to that of the receiving part 84. The insert 86 comprises outlet sections 92 which correspond to the widened sections 72 of the recess 52. An outlet section 92 is assigned to each section 72.

At the outlet sections 92, the insert 86 has a widening compared to connecting sections 94 which connect the outlet sections 92 to one another. The connecting sections 94 form, as it were, webs between the outlet sections 92 and correspond to Verbindungsab sections 96 of the recess 52, which connect the widened sections 72 to one another.

The material thickness of the insert 86 in the area of the connecting sections 94 is less than in the area of the outlet sections 92. Around the passages 102, the material thickness at the outlet sections 92 is approximately as great as at the connecting sections 94. In the inserted state, the insert 86 lies with the outlet sections 92 against the contact areas 74. The connecting sections 94 are arranged in the Ver connecting sections 96. A channel interior 98 of the flushing channel 78 is formed between the receiving part 84 and the insert part 86 via the recess 76 of the recesses 52 (FIGS. 4 to 6). The insert 86 closes the channel interior 98 and seals it.

The tank flushing device 48 has outlets 100 for the flushing liquid. The outlets 100 are arranged on the insert part 86 and in particular on the outlet section 92 thereof.

At the outlet sections 92, the passages 102 are formed which branch off from the channel interior 98 (in the connected state of the insert part 86 with the receiving part 84) and are directed in the direction of the container interior 36. A passage 102 is provided at each outlet section 92.

At the outlet sections 92, the insert 86 is dome-shaped for receiving a respective nozzle element 104, which is formed separately from an insert 86. The nozzle element 104 is set in the passage 102 and held by force and / or positive locking, in particular by clamping and locking, on the insert 86. The nozzle element 104 passes through the insert part 86 and projects with an outlet section 106 beyond the insert part 86 (FIGS. 4 and 6) into the container interior 36. The nozzle elements 104 form the outlets 100.

In the present case, the nozzle elements 104 are flat jet nozzles, which provide a respective, fan-shaped jet of washing liquid (FIG. 7). The nozzle elements 104 are arranged and aligned so that the emerging, fan-shaped rinsing jets are directed radially outwards and downwards. The flushing jets are on the horizontally tapered portion of the side wall 40 as described above and further top portions of the side wall 40 are directed. Adhesive dirt particles are rinsed by means of the rinsing liquid from the container wall 34 and fed to the outlet 50.

A respective nozzle element 104 is aligned at an angle to the respective passage 102. In the present case, the angle is approximately 60 °.

It is conceivable that the orientation of the nozzle elements 104 in the insert part 86 can be varied.

The insert 86 is such that, except in the area of the outlet section 92, it does not protrude beyond the plane 54 of the ceiling wall 42. Only the outlet sections 92 with the nozzle elements 104 protrude over the level 54 into the container interior 36.

As already mentioned, the insert 86 is already held on a press fit in the receiving part 84. For more reliable fixation, the tank flushing device 48 comprises a holding part 108. The holding part 108 is preferably designed in the form of a plate and fixed on the receiving part 84. The holding part 108 is fixed on the edges 56 of the recess 52, in the present case by screwing (Figures 2 and 6).

The holding part 108 covers the insert 86 on its side facing the container interior 36. Recesses in the form of openings 110 are formed in the holding part 108. Through the openings 110, the outlet sections 92 engage with the nozzle elements 104. However, a respective edge 112 of the opening 110 bears against an abutment area 114 of a respective outlet section 92 (FIG. 6). In this way, the insert 86 is reliably fixed in the recess 52.

The tank flushing device 48 comprises an inlet 116, via which flushing liquid can be supplied. In the present case, the tank rinsing device 48 comprises a feed channel 118 having the inlet 116. nal 118 is formed in sections in the cover 44 (Figure 4). The feed channel 118 opens into the flushing channel 78.

An insert 120 adjoins the section of the supply channel 118 formed in the cover 44, which provides a seal. On the inlet side, the inlet 116 is arranged on the insert 120.

The inlet 116 is formed in the form of a standardized connection element 122, in the present case in the form of a connection nipple of a plug-in coupling.

An external supply line, the connection element 122 can be ruled out and the rinsing channel 78 can thus be acted upon with rinsing liquid.

In addition, a vent opening 124 is provided on the cover 44. The vent opening 124 is formed at the end of a vent channel 126, which is in fluid communication with the container interior 36. When flushing the container interior 36, air can escape via the ventilation opening 124 and provide pressure compensation. In addition, in the event of a fault, flushing liquid can escape through the vent 124. This can therefore also be referred to as an overflow opening.

The provision of the ventilation opening 124 also has the advantage that the cover 44 can remain closed during the flushing operation.

It is expedient if the ventilation opening 124 is arranged below the outlets 100 so that the maximum level of the rinsing liquid in the container 24 is lower than the outlets 100. Any contamination of the supply line via the outlets 100 can thereby be avoided.

It goes without saying that position and orientation information such as, for example, "above", "above", "below", "below" or the like are to be understood in relation to the intended use of the device 10, at which is positioned on the bottom surface 14. The bottom surface 14 is assumed to be aligned horizontally.

The device 10 comprises a cover 128 on the housing 20. During the cleaning operation, the cover 128 covers the inlet 116 and the ventilation opening 124 (FIG. 4). For the flushing operation, the cover 128 can be moved into a position not shown in the drawing and in particular pivoted so that the inlet 116 can be accessed.

The configuration of the tank flushing device 48 allows, on the one hand, its simple manufacture and assembly. On the other hand, there is the advantage that the container wall 34, in particular the ceiling wall 42, has relatively few unevenness, in particular no furrows or undercuts, due to the use of the insert part 86 and the covering holding part 108 towards the container interior 36. For this reason, the probability is reduced that dirt particles settle on the ceiling wall 42.

The care and maintenance of the container 24 is thereby facilitated.

An advantageous embodiment of the floor cleaning device according to the invention shown in FIGS. 8 to 13 and designated by reference numeral 140 will be discussed below (device 140 below). The advantages that have already been explained using the example of the device 10 can also be achieved with the device 140. In this regard, reference can be made to the above explanations.

Identical reference signs are used for the same or equivalent features and components. Only the essential differences between the devices 10 and 140 will be discussed insofar as they are helpful for the understanding of the present invention.

The device 140 is also designed as a scrubber drier 12, but it is a walk-behind device guided by a user. The container 24 of the device 140 comprises the container wall 34 with a bottom wall 38, not shown in the drawing, the side wall 40 and the top wall 42, which is part of a lid 44.

The top wall 42 is double-walled and comprises a first wall 142 and a second wall 144. The wall 142 faces the container interior 36 and accordingly the lower wall 142. In contrast, the wall 144 faces away from the container interior 36 and accordingly the outer wall . The wall 144 is arranged on an outside of the device 140.

As can be seen in particular from FIGS. 9 and 11, an intermediate space 146 is formed between the walls 142, 144. The walls 142, 144 are connected to one another, for example by latching.

The device 140 also includes the tank flushing device 48 with the channel parts 80 and 82 in the form of the receiving part 84 and the insert part 86.

In the device 140, the receiving part 84 is channel-shaped and has the recess 52 which is open at the bottom. In plan view, the receiving part 84 is approximately C-shaped with a branch 148 and an adjoining segment 150 which projects from the segment 66.

The receiving part 84 is arranged in the intermediate space 46. The holding part 108 is formed in the device 140 by the ceiling wall 42, in particular by the wall 142 thereof. In the holding part 108, the openings 110 for the outlet sections 92 and the nozzle elements 104 of the insert part 86 are formed.

The insert part 86 is adapted in its shape to the shape of the receiving part 84 and is positively and non-positively received in it, where it is held in the recess 52 by a press fit. Contact areas 114 abut edges 112 of the openings 110, and the insert 86 lies at contact areas 74 of the receiving part 84. In contrast to the device 10, the contact areas 74 are not only arranged on the widened sections 72, but also on the connecting sections 96 (FIG. 11).

The channel interior 98 of the flushing channel 78 is formed between the channel parts 80 and 82 which are joined together.

The wall 144 preferably has support elements 152 which are supported on the receiving part 84 at least in sections. In this way, the double-walled lid 44 is given a higher stability. In addition, the receiving part 84 is secured in its position between the walls 142, 144 ge.

In the device 140, the feed channel 118 is formed by a hose line 154. The hose line 154 is fluidly connected to the receiving part 84 via a connecting element 156 (FIG. 9).

The hose line 154 is guided in sections in the intermediate space 146 and exits from an opening 158 on the wall 142. The inlet 116 forming a connecting element 122 is arranged below the cover 44 and enables the connection of the external supply line.

In the flushing operation, the cover 44 can be opened in order to connect the supply line to the connection element 122. Then the lid 44 can be closed again. The external supply line lies on an edge 160 of the container 24. This ensures that the handle opening 162 of the container interior 36 is open in the flushing mode. In this way, a ventilation opening is formed through which air can escape. In addition, an overflow opening is provided, through which flushing liquid can flow out of the container 24 in the event of a fault. It is expedient if the outlets 100 are arranged above the lowest point of the rim of the 160 so that any rising level of rinsing liquid cannot reach the outlets 100.

Reference symbol list:

10 floor cleaning device

12 scrubber drier

14 floor area

16 chassis

18 landing gear

20 housing

22 storage containers

24 dirty liquid container

26 cleaning tool

28 Dirt pick-up device

30 suction bar

32 suction unit

34 container wall

36 container interior

38 bottom wall

40 side wall

42 ceiling wall

44 cover

46 transverse direction

47 swivel axis

48 tank flushing device

50 outlet

52 recess

53 float system

54 level

56 rand

58 beginning

60 end

62, 64 branching

66, 68, 70 segment

72 widened section Investment area

deepening

Flushing channel

first channel part

second channel part

Recording part

Insert

Side wall

Sealing bead

Outlet section

, 96 connecting section connecting section channel interior

0 outlet

2 pass

4 nozzle element

6 outlet section

8 holding part

0 opening

2 rand

4 investment area

6 admission

8 feed channel

0 stake

2 connection element

4 vent

6 ventilation duct

8 lids

0 Floor cleaning device2, 144 wall

6 space

8 branching

0 segment Support element hose line connection element opening

edge

Intervention opening

Claims

PATENT CLAIMS

A floor cleaning device comprising a liquid container (24), which comprises a container wall (34) and a container interior (36), a tank flushing device (48), which comprises an inlet (116) and outlets (100) in flow communication therewith which can be dispensed by flushing liquid into the container interior (36), the tank flushing device (48) comprising a flushing channel (78) which can be acted upon via the inlet (116) and which has a first channel part (80) and a second channel part (82 ) which form a channel interior (98) of the flushing channel (78) between which the flushing liquid flows, and wherein the outlets (100) are arranged on the second channel part (82) and are connected to the channel interior (98).

2. Floor cleaning device according to claim 1, characterized in that the tank flushing device (48) on a ceiling wall (42), in particular on a hinged lid (44), the liquid container (24) is arranged.

3. Floor cleaning device according to claim 1 or 2, characterized in that the container wall (34) comprises a ceiling wall (42) of the liquid keitsbehälters (24), in particular as part of a hinged lid (44) of the liquid container.

4. Floor cleaning device according to one of the preceding claims, characterized in that the container wall (34), in particular the ceiling wall (42), comprises or forms the first channel part (80).

5. Floor cleaning device according to one of claims 1 to 3, characterized in that the container wall (34), in particular the ceiling wall (42), is double-walled, and that the channel parts (80, 82) between spaced walls (142, 144 ) of the container wall (34) are arranged, the second channel part (82) engaging or engaging in recesses (110) in the wall (142) facing the container interior (36).

6. Floor cleaning device according to one of the preceding claims, characterized in that the first channel part (80) forms a receiving part (84) and the second channel part (82) forms an insert part (86), the insert part (86) in a recess (52) of the receiving part (84), in particular that the recess (52) is formed by shaping the first channel part (80).

7. Floor cleaning device according to one of the preceding claims, characterized in that the tank flushing device (48) comprises a holding part (108) which at least partially covers the second channel part (82) and is connected to the first channel part (80), the holding Part (108) comprises recesses (110) into which the outlets (100) engage or which extend through the outlets (100).

8. Floor cleaning device according to claim 7, characterized in that the holding part (108) is plate-shaped and / or at edges (56) of a recess (52) of the first channel part (80) is fixed, in which the second channel part (82) is recorded.

9. Floor cleaning device according to claim 7 or 8, characterized in that the holding part (108) on the container wall (34) of the liquid keitsbehälters (24), in particular on a ceiling wall (42), is fixed, which a receiving part (84) for forms the second channel part (82).

10. Floor cleaning device according to claim 7 or 8, characterized in that the container wall (34), in particular a ceiling wall (42) of the liquid container (24), the holding part (108) forms, the channel parts (80, 82) preferably between two Walls (142, 144) of the container wall (34) are arranged.

11. Floor cleaning device according to one of the preceding claims, characterized in that passages (102) are formed in the second channel part (82) which form the outlets (100), or in passages (102) in the second channel part (82) nozzle elements ( 104) are formed, which form the outlets (100).

12. Floor cleaning device according to claim 11, characterized in that the nozzle elements (104) are or form flat jet nozzles.

13. Floor cleaning device according to claim 11 or 12, characterized in that the orientation of the nozzle elements (104) relative to the second channel part (82) is changeable.

14. Floor cleaning device according to one of claims 11 to 13,

characterized in that the nozzle elements (104) are inserted into the second channel part (82) from a side facing the first channel part (80) and with an outlet section (106) forming the outlet (100) via the second channel part (82) protrude.

15. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) is non-positively and / or positively received in the first channel part (80), in particular by jamming and / or locking.

16. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) is held on the first channel part (80) via a press fit.

17. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) is made of a deformable ver, elastically crushable material.

18. Floor cleaning device according to one of claims 1 to 16, characterized in that the first channel part (80) is made of a rigid, non-moldable material.

19. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) sealingly rests on the first channel part (80) and the channel interior (98) thereby closes you tend.

20. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) on the side walls (88) has sealing beads (90) or on side walls (88) of the second channel part (82) sealing beads (90) are arranged, which lie sealingly on the side walls of the first channel part (80).

21. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82), except in the loading area of the outlets (100), does not protrude beyond the first channel part (80).

22. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) is made in one piece.

23. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) can be arranged in only one relative arrangement on the first channel part (80), in particular can be inserted into the receiving part (84) in only one orientation.

24. Floor cleaning device according to one of the preceding claims, characterized in that the rinsing channel (78) does not form a self-contained ring line.

25. Floor cleaning device according to one of the preceding claims, characterized in that the flushing channel (78) has at least one Ver branching (62, 64; 148) on which two or more segments (66, 68, 70; 150) of the flushing channel which are connected to one another in flow (78) are aligned at an angle to each other.

26. Floor cleaning device according to one of the preceding claims, characterized in that the second channel part (82) has outlet sections (92) and connecting sections (94) connecting them, where the outlets (100) are arranged on the outlet sections (92), and that the second channel part (82) has a smaller material thickness and in particular width at the connecting sections (94) than at the outlet sections (92).

27. Floor cleaning device according to claim 26, characterized in that the material thickness of the second channel part (82) around passages (102) of the outlet sections (92) is approximately as large as at connecting sections (94).

28. Floor cleaning device according to one of the preceding claims, characterized in that the outlets (100) are arranged in one plane (54) or essentially in one plane.

29. Floor cleaning device according to one of the preceding claims, characterized in that the tank flushing device (48) comprises or forms a feed channel (118) which is flow-connected to the flushing channel (78) and has the inlet (116).

30. Floor cleaning device according to claim 29, characterized in that the feed channel (118) is at least partially formed by the container wall (34) and opens into the rinsing channel (78) or that the feed channel (118) is or comprises a hose line (154) , which is connected to the rinsing channel (78).

31. Floor cleaning device according to claim 29 or 30, characterized in that the supply channel (118) has a connection element (122) for connecting an external supply line.

32. Floor cleaning device according to claim 31, characterized in that the connecting element (122) is arranged outside the liquid container (24), in particular on a housing (20) which has or forms the liquid container (24).

33. Floor cleaning device according to claim 31, characterized in that the connecting element (122) is arranged on a side of the container wall (34) facing the container interior (36), in particular the ceiling wall (42) of the liquid container (24).

34. Floor cleaning device according to one of the preceding claims, characterized in that the container wall (34) has a ventilation opening (124) and / or a ventilation channel (126) or bil det.

35. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10; 140) is a ride-on device, a stand-up device or a Nachlaufvor direction.

36. Floor cleaning device according to one of the preceding claims, characterized in that the floor cleaning device (10) is a scrubber drier (12).