DE202022106954U1 - Cleaning device with suction device - Google Patents

Abstract

Cleaning device (2) for cleaning surfaces,
wherein the cleaning device (2) has a spray device (20) for the spraying delivery of a rotating liquid jet (S) of cleaning liquid (R),
wherein the cleaning device (2) has a hood (10), in the interior (14) of which the spray device (20) is arranged, so that the liquid jet (S) can be discharged in the interior (14) of the hood (10),
wherein the cleaning device (2) has bearing devices (40) for the displaceable mounting of the cleaning device (2) over the surface to be cleaned, and
wherein the hood (10) has a side wall (12) and a cover (11) which delimit the interior (14),
characterized,
that the cleaning device (2) has a suction device (30) which is detachably attached to the hood (10) for sucking off loosened material, the suction device (30) being attached to the hood (10) from the outside and having a boundary wall (31), which extends only partially along the cover (11) and/or the side wall (12) of the hood (10) to a connection (32) for a suction device (4).

Description

The present invention relates to a cleaning device for cleaning surfaces according to the preamble of claim 1, a suction device for retrofitting a cleaning device and a cleaning system.

A cleaning device within the meaning of the present invention is preferably designed to be connected to a high-pressure cleaner in order to deliver a cleaning fluid that is pressurized by the high-pressure cleaner. In particular, a cleaning device within the meaning of the present invention is a surface cleaner for a high-pressure cleaner for cleaning (large) surfaces.

A high-pressure cleaner is designed to put or release water or another cleaning liquid under high pressure, for example 60 bar or more. Due to the high liquid pressure, even very stubborn dirt can be removed from surfaces.

In known cleaning devices of the aforementioned type, a jet of liquid, in particular water, is discharged below a hood guided over the surface. Compared to other attachments for a high-pressure cleaner, such as a lance, this has the advantage that a nozzle for generating a jet of liquid can be guided very close to the surface and at the same time the hood ensures splash protection. Furthermore, the cleaning device can be slidably mounted directly on the surface to be cleaned, for example via rollers, if necessary also in a floating manner due to the liquid pressure. This facilitates handling during cleaning.

The known cleaning devices either have no suction or a permanently integrated suction for the cleaning liquid used and the dirt floating or dissolved in it.

The disadvantage of a cleaning device without suction is that the cleaning liquid and the dirt floating or loosened in it are not collected again and have to drain off into the environment. However, it is often not possible to (completely) drain it off, so that the loosened contamination settles back onto the cleaned surface. The surface then has to be cleaned again, which results in additional costs and additional water consumption. This problem arises when cleaning both indoor and outdoor areas.

In the known cleaning devices with permanently integrated suction, suction is generated underneath the cleaning device, so that the soiled cleaning liquid is sucked in and can be discharged. Usually, the suction takes place via a circumferential slit a few millimeters wide.

With this type of extraction, the distances are very narrow, so that large dirt particles sucked in can quickly become lodged and block the extraction. It is not possible to clean a heavily soiled surface with it.

The present invention is based on the object of specifying a cleaning system, a cleaning device and a suction device, in which cleaning of heavily soiled surfaces can also take place and/or in which a suction can be retrofitted in a particularly simple manner.

The above object is achieved by a cleaning device according to claim 1, a suction device according to claim 28 or a cleaning system according to claim 37. Advantageous developments are the subject of the subclaims.

A proposed cleaning device for cleaning surfaces has a hood and a spray device, which is arranged or mounted in an interior space of the hood. The spray device is preferably completely covered by the hood or sealed off from the environment.

The spray device is designed for spraying delivery of one or more rotating liquid jets of cleaning liquid. The spray device is preferably designed to deliver one or more jets of liquid under high pressure. In particular, the spray device can have a fluid coupling for fluidic connection to a high-pressure cleaning device.

In order to generate a rotating jet of liquid, the spray device particularly preferably has a rotatably mounted spray arm with a nozzle. The spray arm is preferably set in rotation by the recoil of escaping liquid. However, other solutions are also possible here, for example a rotary nozzle.

The hood has a side wall and a lid that define the interior space. The side wall is preferably transverse, in particular at least at least arranged essentially orthogonally to the lid. In particular, when in use, the hood is delimited at the top by the cover and at the side by the side wall.

The hood is preferably completely open on the side opposite the lid. In particular, when in use, the hood is open downwards or towards the surface to be cleaned.

The cleaning device has one or more storage devices. By means of the bearing devices, the cleaning device is slidably mounted relative to the surface to be cleaned or can be slid over the surface to be cleaned. The bearing devices are particularly preferably castors or the like.

When in use, the cleaning device or hood is preferably mounted by means of the bearing devices above the surface to be cleaned.

According to one aspect of the present invention, the cleaning device has a suction device for sucking off cleaning liquid and/or material released therefrom.

According to the proposal, the suction device is attached to the hood in a reversibly detachable manner. This allows easy assembly and possibly also disassembly of the suction device. An existing cleaning device without a suction device can thus be equipped or retrofitted with a suction device in a particularly simple manner. Furthermore, the suction device can also be dismantled or removed again in a simple manner if it is not required for an application.

The suction device is preferably designed for operation with a suction device, for example a wet/dry vacuum cleaner. In particular, the suction device has a connection to which a suction device is connected or can be connected.

According to a further aspect, the suction device that is detachably fastened to the hood is attached to the hood from the outside, in particular laterally, so that a boundary wall of the suction device extends only partially along the cover and/or the side wall of the hood for the connection.

By attaching from the outside, the assembly or retrofitting of the suction device is made possible in a particularly simple manner, in particular from an easily accessible side. Furthermore, the suction device can also be removed or removed again in a simple manner if required.

Since the boundary wall extends only partially along the cover or the side wall, the hood is only partially covered by the suction device.

In this way, connections, fastening devices and the like arranged on or on the hood can continue to be used. These can be, for example, attachment devices for a guide device, such as a handlebar or handle, attachment devices for one or more storage devices and/or a connection for a high-pressure cleaning device. In particular, the connecting device can also be installed without dismantling devices such as a guide device that are previously attached to the hood.

In other solutions, for example a suction device which is also designed as a hood and is slipped over the existing hood, any fastening devices and connections would be covered by it. Correspondingly, connections and fastening devices would have to be provided on the suction device, or the suction device would have to have corresponding recesses. Also, putting it on cannot be done with devices already attached to the hood. The assembly is therefore more difficult since, for example, a handlebar and all bearing devices first have to be dismantled from the hood and then reassembled after the connection device has been attached.

Consequently, the proposed suction device enables particularly simple assembly or disassembly and/or particularly simple retrofitting.

The suction device preferably has a channel. The channel is preferably delimited by the perimeter wall and/or formed between the perimeter wall and (a portion of) the side wall of the hood. When in use, the channel is preferably open towards the bottom or towards the surface to be cleaned.

The connection preferably has an opening which opens into the channel. In particular, towards the connection, the suction device has a narrowing, in particular an abrupt cross-sectional narrowing, which is preferably formed by the transition from the channel to the opening.

The channel preferably has a hydraulic diameter that decreases towards the connection.

Due to the narrowing of the cross section and/or the decreasing hydraulic diameter, the liquid to be sucked off is preferably accelerated in the direction of the connection, which is beneficial to the suction.

Particularly preferably, the opening cross section of the channel or the gap size of the channel if it is in the form of a gap is adjustable or variable. This is preferably achieved in that the suction device can be attached to the hood in different positions.

Due to the adjustability of the opening cross section or gap size, the cleaning device can be used in many ways. In the case of very heavy soiling, for example when cleaning paving stones, a larger opening cross-section or a larger gap size can be selected. This ensures that even large dirt particles such as clods of earth, small stones and the like can be sucked off without getting stuck in the suction device or clogging it. If the surface is less dirty, on the other hand, a smaller opening cross-section or a smaller gap size can be selected, which results in greater acceleration and better transport of liquid and dissolved material in the direction of the connection.

Particularly preferably, the suction device is or can be attached to the hood with the same or corresponding fastening means as the storage devices. Consequently, preferably no special attachment has to be made to the hood. Instead, the same type of attachment, the same attachment means and/or the same attachment points can be used as for the storage devices. This is conducive to particularly simple assembly, disassembly or retrofitting.

Particularly preferably, a bearing device or the suction device can be optionally attached or fastened to a fastening point of the hood.

Preferably, at least one bearing device is or can be attached to the suction device, particularly preferably with the same or corresponding fastening means that are used for attaching the bearing devices and/or the suction device to the hood. In particular, the bearing device can be fastened or attached to the hood and the suction device in the same way or with the same means. This allows the same bearing devices and attachment means for the hood to also be used on the suction device, which in turn is conducive to simple assembly, disassembly and retrofitting.

Particularly preferably, the suction device can be installed or retrofitted in such a way that first one or more bearing devices that are attached to the hood are dismantled from it. The suction device is then preferably attached to the hood at the same point or with the same attachment means. The bearing devices removed from the hood are then preferably fastened to the suction device, in particular again using the same or corresponding fastening means. Accordingly, dismantling can be carried out in reverse order. This enables particularly simple assembly, disassembly or retrofitting, in which the fastenings are always carried out in the same way and fastening means and storage devices can be reused.

The fastening means are in particular accessible from the outside, so that simple assembly and disassembly is made possible.

A further aspect of the present invention, which can also be implemented independently, relates to a suction device which is designed for retrofitting a cleaning device.

The cleaning device has a spray device for the spraying delivery of a rotating liquid jet of cleaning liquid and a hood, in the interior of which the spray device is arranged, so that the liquid jet can be delivered in the interior of the hood. In particular, the cleaning device has a spray device and/or a hood as described above for the cleaning device.

The suction device has a connection for a suction device and a boundary wall and can be detachably fastened to the hood of the cleaning device, so that the boundary wall extends only partially along a cover and/or a side wall of the hood to the connection. Corresponding advantages are achieved in this way; in particular, a suction device can be mounted or retrofitted to an existing cleaning device in a particularly simple manner.

A proposed cleaning device is particularly preferably formed by retrofitting the cleaning device with the proposed suction device.

A further aspect of the present invention, which can also be implemented independently, relates to a cleaning system with a proposed cleaning device, the cleaning system having a suction device coupled to the suction device, in particular a wet/dry vacuum cleaner. The cleaning system preferably also has a high-pressure cleaning device. Corresponding advantages are achieved as a result.

The aforementioned aspects and features of the present invention and the aspects and features of the present invention resulting from the further description can be implemented independently of one another, but also in any combination.

• 1 eine schematische Draufsicht eines vorschlagsgemäßen Reinigungssystems mit einer vorschlagsgemäßen Reinigungsvorrichtung;
• 2 eine schematische Explosionsdarstellung einer vorschlagsgemäßen Reinigungsvorrichtung;
• 3 eine schematische, perspektivische Ansicht der Reinigungsvorrichtung;
• 4 eine weitere schematische, perspektivische Ansicht der Reinigungsvorrichtung;
• 5 eine schematische Ansicht der Reinigungsvorrichtung von unten;
• 6 einen schematischen Schnitt durch die Reinigungsvorrichtung; und
• 7 einen schematischen Schnitt einer Lagereinrichtung der Reinigungsvorrichtung.

Further advantages, features, properties and aspects of the present invention result from the claims and the following description of a preferred embodiment based on the drawing. It shows:

• 1 a schematic plan view of a proposed cleaning system with a proposed cleaning device;
• 2 a schematic exploded view of a proposed cleaning device;
• 3 a schematic, perspective view of the cleaning device;
• 4 a further schematic, perspective view of the cleaning device;
• 5 a schematic view of the cleaning device from below;
• 6 a schematic section through the cleaning device; and
• 7 a schematic section of a storage device of the cleaning device.

In the figures, the same reference numbers are used for the same or similar parts, corresponding properties and advantages being achieved even if a repeated description is omitted for reasons of simplification.

1 shows a proposed cleaning system 1 in a schematic view.

The cleaning system 1 has a cleaning device 2 and preferably a high-pressure cleaning device 3 and/or a suction device 4 .

The cleaning device 2 is in 1 shown in a schematic plan view. The high-pressure cleaning device 3 and the suction device 4 are only indicated by corresponding boxes.

The cleaning device 2 has a hood 10, a spray device 20 (in 1 not shown), a suction device 30 and/or one or more storage devices 40--four storage devices 40 in the example shown.

The hood 10, the spray device 20 and one or more storage devices 40 preferably form a cleaning device. The cleaning device 2 is preferably formed by the cleaning device and the suction device 30 .

The cleaning device 2 is preferably designed as a surface cleaner and/or as an attachment for the high-pressure cleaning device 3 and/or for dispensing cleaning liquid R.

The cleaning device 2, in particular the spray device 20, is preferably fluidly connected or can be connected to the high-pressure cleaning device 3 or another liquid or water supply, in particular via a hose 3A.

The high-pressure cleaning device 3 is preferably a device that can put or release a cleaning liquid R, in particular water, under high pressure, in particular for cleaning purposes. The liquid pressure here is preferably at least 50 bar, preferably 100 bar or 200 bar or more. The high-pressure cleaning device 3 preferably has a pump, in particular a high-pressure pump, in order to pressurize the cleaning liquid R (not shown).

“High pressure” preferably means a pressure of at least 50 bar or 100 bar.

The operating pressure or working pressure of the high-pressure cleaning device 3 is at least 50 bar, in particular 100 bar and/or at most 500 bar, in particular at most 300 bar.

During operation, cleaning liquid R, which is pressurized by the high-pressure cleaning device 3, is fed via the hose 3A to the cleaning device 2 or spraying device 20 and is discharged via the spraying device 20, in particular inside the hood 10.

The cleaning device 2, in particular the spray device 20, is preferably designed for operation under high pressure, in particular for a liquid pressure of at least 50 bar or 100 bar, in particular at least 200 bar and/or at most 500 bar, in particular at most 300 bar.

In principle, however, the cleaning device 2 can also be designed for lower pressures and/or be fluidically connected or connectable to another pump, water supply or the like, in particular instead of the high-pressure cleaning device 3 .

The cleaning system 1 or the cleaning device 2, in particular the spray device 20, is preferably designed for a (maximum) flow rate of at least 500 l/h, in particular at least 1000 l/h or 1500 l/h and/or at most 2500 l/h. h, in particular designed for a maximum of 2000 l/h.

The cleaning system 1 or the cleaning device 2, in particular the spray device 20, is preferably designed for a maximum temperature of the cleaning liquid R of more than 30° C. or 50° C., in particular more than 100° C., and/or less than 150° C designed. The cleaning system 1 or the cleaning device 2 or the spray device 20 is particularly preferably designed for a maximum temperature of approximately 60.degree. C. or approximately 120.degree.

The cleaning device 2, in particular the spray device 20, is preferably designed for a minimum temperature of the cleaning liquid R of less than 10° C. and/or of more than 1° C.

The suction device 4 is preferably fluidically connected or can be connected to the cleaning device 2, in particular the suction device 30, in particular via a suction hose 4A.

The suction device 4 is preferably designed to generate a suction or negative pressure on the suction device 30 in order to suck in or suck in the used or soiled cleaning liquid R and the material or dirt loosened therefrom.

The suction device 4 is particularly preferably a wet/dry suction device or has one.

To generate the negative pressure or to convey the fluid, the suction device 4 preferably has a pump, in particular a dirty water pump (not shown). The pump or waste water pump is preferably able to pump even coarsely contaminated liquid that has a high solids content, such as rubble, clods of earth and the like.

The suction device 4 preferably has a separator, in particular a dirty water separator, in order to at least partially separate the material dissolved in the sucked-in liquid (not shown).

The cleaning system 1 preferably has the hose 3A and/or the suction hose 4A.

The cleaning system 1 or the cleaning device 2 preferably has a guide device 5 . By means of the guiding device 5 it is preferably possible to displace the cleaning system 1 or the cleaning device 2 over the surface to be cleaned. In particular, the guide device 5 is a handlebar, a handlebar or the like.

In the usual position of use, the guide device 5 preferably extends obliquely upwards from the cleaning device 2 or hood 10 or suction device 30 to a height where it can be comfortably held by a standing user.

The guiding device 5 preferably has a handle 5A.

The guide device 5 is preferably attached or attachable to the hood 10 or the suction device 30 .

The guide device 5 can be adjustable in length and/or height and/or rotatably mounted on the hood 10 or suction device 30 .

The hose 3A and/or the high-pressure cleaning device 3 can be (partially) integrated into the guide device 5 . For example, a valve gun (not shown) of the high-pressure cleaning device 3 can be integrated or can be integrated into the guide device 5, for example forming the handle 5A or part of the handle 5A. The dispensing of cleaning liquid R can preferably be controlled by actuating the valve pistol.

Below is the proposed cleaning device 2 based on the 2 until 6 described in more detail.

2 shows the cleaning device 2 in a schematic exploded view, in which the hood 10, spray device 20, Suction device 30 and storage devices 40 are shown moved away from each other. 3 shows the proposed cleaning device 2 in the assembled state in a schematic perspective view obliquely from above (relative to the usual position of use). 4 shows the proposed cleaning device 2 in a 3 corresponding schematic perspective view obliquely from below. 5 shows a schematic bottom view of the proposed cleaning device 2. 6 shows a schematic section of the cleaning device 2 along the in 5 drawn line VI-VI.

The hood 10 has a cover 11 and a side wall 12 .

In the usual position of use or during cleaning, the cover 11 preferably extends at least essentially parallel to the surface to be cleaned.

The side wall 12 preferably extends transversely, in particular at least essentially perpendicularly, to the cover 11 or (in the usual position of use or during cleaning) to the surface to be cleaned.

The hood 10 is preferably open towards the surface to be cleaned or opposite the cover 11 . In particular, the hood 10 has no wall here.

The hood 10 or side wall 12 preferably has a free edge 13, in particular a peripheral edge, which faces away from the cover 11 or faces the surface to be cleaned.

The free edge 13 is preferably elastic. In particular, the free edge 13 is made of rubber and/or formed by an elastic lip and/or brush.

The free edge 13 is preferably connected to the hood 10 or the side wall 12 or the section of the side wall 12 connected to the cover 11 in a non-positive, positive and/or material connection, in particular plugged on, screwed on and/or glued on.

The side wall 12 or the free edge 13 preferably extends just above the surface to be cleaned or--in particular in the case of an elastic free edge 13--up to the surface to be cleaned or touches it.

The cover 11 and the side wall 12 (at least at the transition between the cover 11 and the side wall 12) are preferably connected to one another with a material fit and/or are formed in one piece. However, the elastic free edge 13 can be formed as a separate component.

The hood 10, in particular the cover 11 and the side wall 12 (preferably including the free edge 13), delimit or define an interior space 14. In the usual position of use or during cleaning, the interior space 14 is preferably pushed upwards and away from the cover 11 / or delimited by the side wall 12 to the side.

The interior 14 is preferably open at the bottom or is delimited there by the surface to be cleaned.

The hood 10 is preferably designed to be round or at least essentially disk-shaped.

The cover 11 preferably has at least essentially the shape of a circular disk or circular surface.

The side wall 12 preferably has at least substantially the shape of an annulus.

The interior space 14 delimited by the hood 10 preferably has the shape of a (flat) cylinder. The cover 11 preferably forms a top surface and the side wall 12 forms a lateral surface.

However, other solutions are also possible here. In particular, the hood 10 can also be oval or angular. For example, the cover 11 could be square or octagonal. The side wall 12 then preferably has a plurality of flat or planar sections.

The hood 10 or the cover 11 or the side wall 12 preferably has a diameter of at least 20 cm or 30 cm and/or at most 60 cm or 50 cm. The diameter is particularly preferably about 40 cm. In the case of an angular hood 10, the dimensions are preferably corresponding, the “diameter” preferably being understood here as the distance between two opposite sections of the side wall 12 or between two opposite corners.

The height of the hood 10 or the side wall 12, preferably including the free edge 13, or the distance of the cover 11 from the surface to be cleaned or the free edge 13 is preferably at least 4 cm or 6 cm, in particular at least 8 cm, and /or a maximum of 15 cm or 12 cm, in particular a maximum of 10 cm.

The hood 10 preferably has a fastening device 15 for fastening the guide device 5 .

The fastening device 15 is preferably arranged on the outside (ie the side facing away from the interior space 14 ) of the hood 10 .

In the example shown, the fastening device 15 is arranged on the cover 11 . In particular, the fastening device 15 is arranged on the upper side of the hood 10 or the cover 11 in the usual position of use or during cleaning. However, fastening devices 15 on the side wall 12 and/or on the suction device 30 are also conceivable.

In the illustrated example, the fastening device 15 is a U-shaped sheet metal which is screwed to the cover 11 and to which the guide device 5 is or can be screwed tight. However, other solutions are also possible here.

It is also possible to provide several fastening devices 15 or to fasten the guide device 5 to the hood 10 and/or suction device 30 at several points or fastening devices 15 .

The spray device 20 is arranged in the interior of the hood 10 .

The spray device 20 is particularly preferably attached to the cover 11, in particular screwed on. In the example shown, the spray device 20 preferably has a flange 26 for this purpose.

The spray device 20 is designed to deliver cleaning liquid R in the form of one or more rotating liquid jets S, as in 4 shown schematically.

The spray device 20 preferably has one or more spray arms 21 with nozzles 22--two in the illustrated example.

The spray arm(s) 21 extend(es) preferably at least essentially parallel to the cover 11 or to the surface to be cleaned. If there are several spray arms 21, these preferably extend in a common plane parallel to the cover 11.

The spray arm 21 preferably extends over more than half, preferably over 75% or 80%, of the radius of the hood 10 or the lid 11 (or the smallest distance from the center to the edge of the lid 11).

The (respective) nozzle 22 is preferably arranged at the distal end or the end of the (respective) spray arm 21 facing the side wall 12 . However, solutions are also possible in which the spray arm 21 has a plurality of nozzles 22 (or other discharge openings) distributed over its length.

The spray device 20 preferably has a fluid coupling 23 . Cleaning fluid R can be supplied to the spray device 20 via the fluid coupling 23 .

The fluid coupling 23 is preferably designed as a connection for the hose 3A.

The fluid coupling 23 is preferably arranged on the outside (ie the side facing away from the interior space 14 ) of the hood 10 , in particular of the cover 11 .

In particular, the fluid coupling is arranged on the upper side of the hood 10 or the cover 11 in the usual position of use or during cleaning.

The fluid coupling 23 is particularly preferably arranged centrally or centrally on the hood 10 or the cover 11 .

The hood 10, in particular the cover 11, preferably has a recess 16 through which the fluid coupling 23 is or can be passed or inserted, as in 2 shown. The recess 16 is preferably arranged centrally or centrally on the cover 11 .

The spray arm(s) 21 are/is preferably mounted so as to be rotatable about an axis of rotation A, as shown in FIG 6 shown.

The spray device 20 preferably has a rotary bearing 24 for the spray arm(s) 21 or nozzle(s) 22 .

In the case of several spray arms 21, these preferably have a common axis of rotation A or a common pivot bearing 24 or the spray arms 21 are preferably mounted rotatably on a common pivot bearing 24 or about a common axis of rotation A.

The axis of rotation A preferably extends through the recess 16 and/or transversely, in particular perpendicularly, to the cover 11 and/or at least essentially parallel to the side wall 12 and/or at least essentially vertically in the usual position of use or during cleaning.

The axis of rotation A and/or the pivot bearing 23 are/is preferably arranged centrally on the cover 11 . In particular, the axis of rotation A runs through the center of the cover 11.

The fluid coupling 23 and/or the rotary bearing 24 preferably has a cleaning liquid passage 25, via which the cleaning liquid R can be directed into the spray arm(s) 21 or nozzles 22.

The spray arm(s) 21 are/is preferably hollow-cylindrical or form/form a liquid line or are designed to conduct cleaning liquid R from the fluid coupling 23 or the cleaning liquid passage 25 to the (respective) nozzle 22 .

The nozzle(s) 22 is/are preferably designed to deliver the cleaning liquid R (in each case) as a liquid jet S.

Due to the preferred rotation of the spray arm 21, the nozzle 22 arranged on the spray arm 21 is preferably rotated on a circular path. In particular, the jet of liquid S emitted by the nozzle 22 can thus be rotated.

The (respective) nozzle 22 is preferably arranged at an angle on the spray arm 21, so that the recoil when the liquid is dispensed causes the spray arm 21 to rotate. In other words, the nozzle 22 is preferably arranged in such a way that the liquid jet S exits obliquely or has a directional component, in particular a horizontal one, which lies in the plane of rotation of the spray arm 21 .

The rotation of the spray arm 21 or the rotating liquid jet S is preferably brought about exclusively by recoil forces of the liquid jet S.

In the case of several spray arms 21 or nozzles 22, the nozzles 22 are preferably inclined in the same direction of rotation in order to enable a common rotation. In the representation example according to 5 the nozzles 22 are inclined in the clockwise direction.

Solutions without spray arms 21 or with static or non-rotating spray arms 21 are also possible, for example when using one or more rotating nozzles.

The cleaning system 1 or the cleaning device 2 or the spray device 20, in particular the spray arm(s) 21, the nozzle(s) 22 and/or the rotary bearing 24, are/is preferably for more than 500 rpm, in particular more than 800 rpm and/or less than 2500 rpm, in particular less than 2200 rpm. The cleaning system 1 or the cleaning device 2 or the spray device 20 is particularly preferably designed for approximately 1000 rpm or for approximately 2000 rpm.

The liquid jet(s) S can preferably be discharged completely in the interior 14 or completely surrounded by walls or completely delimited or sealed off from the environment, in particular upwards by the cover 11, to the side by the side wall 12, if necessary with the elastic edge 13, and down through the surface to be cleaned.

The spray arm(s) 21, the nozzle(s) 22, the pivot bearing 24 and/or the flange 26 are/is preferably arranged completely in the interior space 14 or completely surrounded by walls or completely separated or sealed off from the environment , In particular upwards through the cover 11, to the side through the side wall 12, if necessary with the elastic edge 13, and downwards through the surface to be cleaned.

The suction device 30 is preferably designed to transport loosened dirt or released cleaning liquid R in the direction of the suction device 4 or to be connected to the suction device 4 .

The suction device 30 has a boundary wall 31 and a connection 32 .

The boundary wall 31 preferably has a first section 31A and a second section 31B.

In the mounted state, the suction device 30 is preferably mounted or fastened to the hood 10, in particular the cover 11, in particular via the first section 31A.

In the usual position of use or during cleaning, the first section 31A preferably extends at least essentially parallel to the surface to be cleaned.

The first section 31A (in the assembled state) preferably runs at least substantially parallel to the cover 11.

The second section 31B preferably extends transversely, in particular at least substantially perpendicularly, to the first section 31A or (in the usual position of use or during cleaning) to the surface to be cleaned.

The second section 31 B (in the assembled state) preferably runs at least essentially parallel to the side wall 12.

The suction device 30 or boundary wall 31 is preferably open towards the surface to be cleaned or opposite the first section 31A. In particular, the suction device 30 has no wall here.

The downward openings of the hood 20 and the suction device 30 are preferably in a common plane, in particular parallel to the surface to be cleaned.

The suction device 30 or boundary wall 31 is preferably (in the assembled state) open towards the side wall 12 . In particular, the second section 31B is not closed or is completely circumferential. However, other solutions are also possible.

The connecting device 30 is attached to the hood 10 from the outside, in particular laterally.

For assembly, the connection device 30 is preferably attached to the hood 10 from the side or in the direction of the side wall 12 or (partially) pushed on and then fastened to the hood 10 .

The boundary wall 31 extends only partially or in sections over or along the hood 10, in particular the cover 11 and/or the side wall 12.

The boundary wall 31 preferably extends up to a maximum of half, preferably over less than half of the hood 10. The boundary wall 31 preferably covers a maximum of half of the hood 10, preferably less than half of the hood 10.

The boundary wall 31, in particular the first section 31A, preferably covers a maximum of half of the cover 11, in particular a semicircle, preferably less than half of the cover 11, in particular a (circular) segment of the cover 11.

The boundary wall 31, in particular the second section 31B, preferably covers a maximum of half of the side wall 12, in particular a half ring, preferably less than half of the side wall 12, in particular a (ring) segment of the side wall 12.

At its widest point, the boundary wall 31 or the first section 31A preferably has a width that is less than or at most the same as the diameter of the hood 10 .

In the example shown, the suction device 30 is angular. The second section 31B consequently has a plurality of flat or planar subsections which are angled relative to one another.

Preferably, the first section 31A has at least essentially the shape of a segment of a circle and/or the second section 31B has at least essentially the shape of a ring segment.

At least essentially in the form of a segment of a circle or segment of a ring is preferably to be understood here as meaning that the boundary wall 31 or its sections 31A, 31B can also be embodied as angular, but the angular shape approximately corresponds to a segment of a circle or segment of a ring or an approximation of a segment of a circle or ring segment represents.

For example, the first section 31A could also have the shape of an (isosceles) triangle, which represents the simplest or roughest approximation to a segment of a circle. The second section 31B then preferably correspondingly has two subsections which are angled towards one another. The shape of a trapezoid for the first section 31A is also possible.

The connecting device 30 can also be round or the first section 31A can have the shape of a circular segment or a semicircle.

The shape or the dimensions of the suction device 30 preferably corresponds at least essentially to a segment, in particular a circular segment, of the hood 10.

The suction device 30 or boundary wall 31 preferably has a free edge 33, which extends in particular along the second section 31B and faces away from the first section 31A or towards the surface to be cleaned.

The free edge 33 is preferably elastic. In particular, the free edge 33 is made of rubber and/or formed by an elastic lip and/or brush. The free edge 33 of the suction device 30 can be formed from the same material or in a similar manner to the free edge 13 of the hood 10 .

The free edge 33 is preferably force-, form- and/or materially connected, in particular plugged on, screwed on and/or glued on.

The boundary wall 31 or the second section 31B or--if present--the free edge 33 preferably extends just above the surface to be cleaned or--particularly in the case of an elastic free edge 33--up to the surface to be cleaned or touches it.

The first section 31A and the second section 31B are preferably connected to one another with a material fit and/or are formed in one piece. The elastic free edge 33 can be formed as a separate component.

In the installed state, the second section 31B and/or the free edge 33 preferably merges at least approximately tangentially and/or without a gap into the side wall 12 and/or the free edge 13 .

The suction hose 4A can preferably be connected to the connection 32 . For this purpose, the connection 32 can have a connecting piece 32A (only in 3 shown).

The connection 32 is preferably designed in the form of a hollow cylinder or tube.

The boundary wall 31, in particular the first section 31A and/or the second section 32B, preferably extends towards the connection 32.

The connection 32 preferably extends through the boundary wall 31, in particular through the first section 31A and/or the second section 31B.

In the example shown, the connector 32 preferably extends transversely or non-perpendicularly to the first section 31A and/or second section 32B. In particular, the port 32 is disposed at an obtuse angle to the first portion 31A (relative to the outside/top of the first portion 31A).

However, other solutions are also possible here. For example, the terminal 32 could only extend through or perpendicular to the first portion 31A.

The suction device 30 or the first section 31A preferably stands or protrudes beyond the hood 10 or the cover 11 .

The suction device 30 preferably forms a channel 34.

The channel 34 is preferably delimited or defined by the boundary wall 31, in the usual position of use preferably upwards through the first section 31A and to the side (partially) through the second section 31B and - if present - the free edge 33.

The channel 34 is preferably open at the bottom or is delimited there by the surface to be cleaned.

Preferably, channel 34 is (partially) bounded by side wall 12 .

The channel 34 is particularly preferably formed between the boundary wall 31, in particular the second section 31B, and the side wall 12, in particular the segment of the side wall 12 covered by the suction device 30 or boundary wall 31.

The channel 34 is preferably at least essentially in the form of a gap and/or curved.

The channel 34 is preferably separated from the interior space 14 by the side wall 12 .

The channel 34 can be completely separated from the interior 14, in particular if the side wall 12 or its free edge 13 extends in the area of the channel 34 to the surface to be cleaned.

In particular, the free edge 13 can be completely circumferential or closed or ring-shaped. This is exemplary in the 2 and 4 shown.

However, it is preferred if the side wall 12 or its free edge 13 has one or more openings 13A in the area of the channel 34 or is recessed or shorter than in the area outside the channel 34 . For example, no elastic free edge 13 could be provided in the region of the channel 34, so that the side wall 12 correspondingly has an extent or height that is shortened by the height of the free edge 13. This is shown schematically in the 5 and 6 shown.

The connection 32 preferably extends into the channel 34 or opens into the channel 34 . In particular, the connection 32 has an opening 35 which opens into the channel 34 .

The (hydraulic) diameter of the connection 32 or the opening 35 is preferably greater than 2 cm, in particular greater than 2.5 cm and/or less than 10 cm, in particular less than 6 cm.

The suction device 30 preferably has a narrowing of the cross section, in particular at the transition from the channel 34 to the opening 35. In particular, the narrowing of the cross section takes place abruptly.

The hydraulic diameter preferably decreases towards the connection 32 . In particular, the hydraulic diameter of the opening 35 is smaller than the hydraulic diameter of the channel 34.

A fluid is preferably accelerated towards the connection 32 by the geometry of the suction device 30, in particular by the narrowing of the cross section and/or the decreasing hydraulic diameter.

During cleaning, a suction or negative pressure is preferably generated at connection 32 or opening 35 or in channel 34, in particular by suction device 4 connected to connection 32.

The bearing devices 40 bear or support the cleaning device 2 on the surface to be cleaned. In particular, the bearing devices 40, in particular roller elements 41 of the bearing devices 40, rest on the surface to be cleaned.

The bearing devices 40 are preferably attached or provided on the hood 10 and/or the suction device 30 .

In the example shown, four storage devices 40 are provided, two each on the hood 10 and the suction device 30. However, other solutions with more or fewer storage devices 40 are also possible here.

The bearing devices 40 are preferably designed as steering rollers. In particular, the bearing devices 40 (each) have a roller element 41 and a roller axis 42 for the roller element 41 . A bearing device 40 can also have a plurality of roller elements 41 .

The bearing devices 40 preferably each have a roller holder 43 on which the roller element 41 or the roller axle 42 is/are held.

The bearing devices 40 preferably each have a fastening element 44 with which the bearing devices 40 are or can be fastened to the hood 10 and/or the suction device 30 .

The roller holder 43 is preferably rotatably mounted relative to the fastening element 44, in particular about an axis which runs vertically in the usual position of use.

The cleaning device 2 preferably has fastening means 50 for fastening the bearing devices 40 to the hood 10 and/or the suction device 30 and/or for fastening the suction device 30 to the hood 10 .

The fastening means 50 are particularly preferably of the same or similar or corresponding design. In other words, the suction device 30 is preferably fastened or can be fastened with fastening means 50 of the same type as the bearing devices 40.

A cleaning device without a suction device can preferably be retrofitted with the proposed suction device 30 in order to form a proposed cleaning device 2 .

For this purpose, one or more storage devices 40 are preferably removed from the hood 10 and the suction device 30 is attached at the same points and/or with the same fastening means 50 as the previously attached storage device(s) 40. The removed storage devices 40 are then preferably attached to the suction device 30, in particular (again) with the same or corresponding attachment means 50.

In the example shown, the fasteners 50 have screws 51 , screw holes 52 and nuts 53 .

However, other solutions are also possible. For example, the nuts 53 could be dispensed with and corresponding threads could be provided in the screw-on holes 52 instead. Other attachments, for example by means of rivets, are also conceivable.

The bearing devices 40 are preferably screwed onto the hood 10, in particular the cover 11 and/or the suction device 30 or boundary wall 31, in particular the first section 31A.

The hood 10, in particular the cover 11 and/or the suction device 30 or boundary wall 31, in particular the first section 31A, preferably has the screw holes 52 or corresponding fastening points for the bearing devices 40.

The positioning devices 40 preferably have corresponding screw holes 52 or corresponding fastening points which, in the assembled state, are aligned with the screw holes 52 or corresponding fastening points of the hood 10 and/or suction device 30 or through which the screws 51 extend.

The intake device 30 or boundary wall 31, in particular the first section 31A, is preferably screwed to the hood 10, in particular the cover 11.

The hood 10, in particular the cover 11, and the intake device 30 or boundary wall 31, in particular the first section 31A, preferably have the screw holes 52 or corresponding attachment points for attaching the intake device 30 to the hood 10.

The screw holes 52 provided on the hood 10 or corresponding fastening points can preferably be used optionally for the bearing devices 40 or the suction device 30 .

The (maximum) distance of the boundary wall 31, in particular of the second section 31B, from the side wall 12 and/or the opening width or the gap dimension or the clear width or the hydraulic diameter of the channel 34 is particularly preferably changeable or adjustable.

In particular, it is adjustable how far the first section 31A extends beyond the cover 11 .

In the example shown, the fastening means 50 for fastening the suction device 30 to the hood 10 have one or more elongated holes 52 or the screw-on holes 52 are (partially) designed as elongated holes 52 . In particular, the suction device 30 or boundary wall 31 or the first section 31A has one or more elongated holes 52 .

The suction device 30 can preferably be attached further to the hood 10 or side wall 12 or attached further away from it via the elongated holes 52 .

Other solutions are also possible. For example, the suction device 30 and/or hood 10 could have screw holes 52 at different points that can be used as desired.

A preferred embodiment of the bearing device 40 with a height adjustment 45 is described below, as shown in a schematic section in FIG 7 shown.

The height of the hood 10 and/or suction device 30 from the surface to be cleaned can preferably be adjusted or adjusted by means of the height adjustment 45 . In particular, the hood 10 and/or suction device 30, in particular their free edges 13, 33, can be lowered completely onto the surface to be cleaned, or a gap can be set to the surface to be cleaned, as required.

Preferably, a contact pressure or a contact force of the free edges 13, 33 on the surface to be cleaned can be adjusted by means of the height adjustment 45. In particular, the wear on the free edges 13, 33 can be reduced in this way.

The bearing device 40 or the height adjustment 45 preferably has an adjustment element 46 .

In the example shown, the adjusting element 46 is designed as an adjusting screw.

The height adjustment 45 preferably has a corresponding counter-element 47 for the adjustment element 46, a nut in the example shown.

The height of the roller element 41 or the roller axis 42 or the roller holder 43 can be adjusted relative to the fastening element 44 by means of the height adjustment 45 .

Since the fastening element 44 is stationary in relation to the suction device 30 or hood 10, the roller element 41 is consequently preferably height-adjustable relative to the suction device 30 and/or hood 10.

Actuation of the height adjustment 45 or the adjustment element 46 preferably causes the hood 10 and/or suction device 30 to be raised or lowered relative to the roller element 41 or to the surface to be cleaned.

The bearing device 40 or height adjustment 45 can also have a spring 48 . The spring 48 is preferably arranged between the fastening element 44 and the roller mount 43 and/or around the adjustment element 46 .

The spring 48 preferably serves to at least partially compensate for the contact pressure of the hood 10 and/or suction device 30, in particular the free edges 13, 33, on the surface to be cleaned. In addition, the spring 48 unge wanted to absorb shock from an uneven surface.

The proposed cleaning device 2 is particularly suitable for cleaning heavily soiled and/or uneven surfaces, for example paving stones with joints (clogged with dirt) and the like.

The dirt is preferably loosened by the cleaning jet(s) S and by the pushing movement of the cleaning device 2 the dirt parts are transported with the cleaning liquid R discharged, in particular by its washing effect, into the area of the suction device 30, in particular the channel 34, and transported there sucked off. The suction preferably also takes place when the cleaning device 2 is not moving, in particular by means of a correspondingly high negative pressure/suction.

The elastic free edge 33 preferably ensures that the dirt to be sucked off is centered in the area of the suction device 30, in particular the channel 34 or at the opening 35.

Different aspects of the present invention and embodiment variants can be implemented independently of one another and in any combination with one another and can be advantageous.

Reference List

1

cleaning system

2

cleaning device

3

high-pressure cleaning device

3A

Hose

4

suction device

4A

suction hose

5

guide device

5A

Handle

10

Hood

11

Lid

12

Side wall

13

free edge

13A

breakthrough

14

inner space

15

fastening device

16

recess

20

spray device

21

spray arm

22

jet

23

fluid coupling

24

pivot bearing

25

cleaning liquid passage

26

flange

30

suction device

31

boundary wall

31A

first section

31B

second part

32

Connection

32A

connecting piece

33

elastic free edge

34

channel

35

opening

40

storage facility

41

role element

42

roller axis

43

roll holder

44

fastener

45

height adjustment

46

adjustment element

47

counter element

48

Feather

50

fasteners

51

screw

52

screw hole

53

Mother

A

axis of rotation

R

cleaning fluid

S

liquid jet

Claims (39)

Cleaning device (2) for cleaning surfaces, wherein the cleaning device (2) has a spray device (20) for spraying delivery of a rotating liquid jet (S) of cleaning liquid (R), wherein the cleaning device (2) has a hood (10), in whose interior (14) the spray device (20) is arranged so that the liquid jet (S) can be discharged in the interior (14) of the hood (10), wherein the cleaning device (2) has storage devices (40) for mounting the cleaning device (2) so that it can be displaced over the surface to be cleaned, and wherein the hood (10) has a side wall (12) and a cover (11) which the interior (14 ) limit, characterized in that the cleaning device (2) has a detachably attached to the hood (10) suction device (30) for suction of dissolved material, wherein the suction device (30) is attached to the hood (10) from the outside and a Bounding wall (31) which extends only partially along the cover (11) and/or the side wall (12) of the hood (10) to a connection (32) for a suction device (4). cleaning device claim 1 , wherein the suction device (30) towards the connection (32) has or forms an, in particular abrupt, cross-sectional reduction. cleaning device claim 1 or 2 , wherein the suction device (30) forms a channel (34) which is delimited by the delimiting wall (31) and which is delimited from the interior space (14) enclosed by the hood (10). cleaning device claim 3 , wherein the passage (34) has a hydraulic diameter that decreases towards the connection (32). cleaning device claim 3 or 4 , wherein the channel (34) has an adjustable opening cross section. Cleaning device according to one of claims 3 until 5 , The channel (34) being in the form of a gap and the gap size of the channel (34) being adjustable. Cleaning device according to one of the preceding claims, in which the side wall (12) of the hood (10) has a resilient free edge (13). cleaning device claim 7 , wherein the elastic free edge (13) of the side wall (12) has one or more openings (13A) in an area that is covered by the suction device (30). cleaning device claim 7 or 8th wherein the elastic free edge (13) of the side wall (12) is formed by an elastic lip and/or brush. Cleaning device according to one of the preceding claims, in which the boundary wall (31) has a resilient free edge (33). cleaning device claim 10 , wherein the elastic free edge (33) of the boundary wall (31) is formed by an elastic lip and/or brush. Cleaning device according to one of Claims 7 until 11 , the boundary wall (31) and the side wall (12) each having the elastic free edge (13, 33), the elastic free edge (13) of the side wall (12) being at least substantially level with the elastic free edge (33) the boundary wall (31) is located. Cleaning device according to one of the preceding claims, in which the suction device (30) is attached to the side of the hood (10). Cleaning device according to one of the preceding claims, in which the boundary wall (31) adjoins the side wall (12) of the hood (10). Cleaning device according to one of the preceding claims, wherein the bearing devices (40) are designed as steering rollers or have such. Cleaning device according to one of the preceding claims, wherein the suction device (30) carries at least one of the bearing devices (40). Cleaning device according to one of the preceding claims, wherein the bearing devices (40) are attached to the cover (11) of the hood (10) and/or the boundary wall (31) of the suction device (30). Cleaning device according to one of the preceding claims, wherein at least one of the bearing devices (40) has a height adjustment with which the distance of the suction device (30) and/or the hood (10) from the surface can be adjusted. Cleaning device according to one of the preceding claims, wherein the suction device (30) is fastened to the hood (10) with fastening means (50). cleaning device claim 19 , wherein the bearing devices (40) are fastened to the hood (10) and/or the suction device (30) with fastening means (50), the fastening means (50) for the bearing devices (40) correspond to the fastening means (50) for the suction device (30) or are of the same design. cleaning device claim 19 or 20 , wherein the suction device (30) and/or the bearing devices (40) are screwed on with screws (51). Cleaning device according to one of claims 19 until 21 , wherein the fastening means (50) make it possible to change a gap dimension, a clear width, and/or a hydraulic diameter of a channel (34) of the suction device (30), in particular wherein the fastening means (50) have at least one elongated hole (52) that allows the suction device (30) to be fastened in different positions on and relative to the hood (10). Cleaning device according to one of the preceding claims, wherein the cleaning device (2) has a guide device (5), in particular a driving handle with a handle (5A), for manually guiding the cleaning device (2) over the surface, the hood (10) having one or more Fastening devices (15) for preferably reversible fastening of the guide device (5). Cleaning device according to one of the preceding claims, wherein the spray device (20) has a spray arm (21) with a nozzle (22) for spraying delivery of the cleaning liquid (R), the spray arm (21) in the interior (14) of the hood (10) is rotatably mounted about an axis of rotation (A), so that the nozzle (22) undergoes a rotational movement when the spray arm (21) is set in rotation. cleaning device Claim 24 , wherein the cleaning device (2) has a fluid coupling (23) for supplying cleaning liquid (R) and a rotary bearing (24) on which the spray arm (21) is rotatably mounted, the rotary bearing (24) having a cleaning liquid passage (25). , to direct cleaning liquid (R) from the fluid coupling (23) into the spray arm (21). cleaning device Claim 24 or 25 , wherein the nozzle (22) is inclined in such a way that the spray arm (21) can be set in rotation by a recoil resulting from the discharge of the cleaning liquid (R) with the nozzle (22). Cleaning device according to one of the preceding claims, wherein the suction device (30) according to one of claims 28 until 36 is trained. Suction device (30) for retrofitting a cleaning device with a spray device (20) for the spraying delivery of a rotating liquid jet (S) of cleaning liquid (R) and a hood (10), in the interior (14) of which the spray device (20) is arranged, see above that the liquid jet (S) can be discharged in the interior (14) of the hood (10) for cleaning surfaces, preferably for forming a cleaning device (2) according to one of the preceding claims, wherein the suction device (30) has a connection (32) for a suction device (4) and a boundary wall (31), and wherein the suction device (30) can be detachably fastened to the hood (10) of the cleaning device (2), so that the boundary wall (31) extends only partially along a cover (11) and/or a side wall (12) of the hood (10) extends to the terminal (32). suction device claim 28 , wherein the boundary wall (31) has a resilient free edge (33). suction device claim 29 , wherein the elastic free edge (33) of the boundary wall (31) is formed by an elastic lip and/or brush. Suction device according to one of claims 28 until 30 , wherein the suction device (30) has fastening means (50) for fastening to the hood (10), the fastening means (50) being designed such that the suction device (30) can be fastened in different positions on the hood (10). suction device Claim 31 , the positions differing in how far the boundary wall (31) extends along the side wall (12) and/or the cover (11) and/or which gap dimensions a channel formed between the boundary wall (31) and side wall (12) ( 34). suction device Claim 31 or 32 , wherein the fastening means (50) have at least one elongated hole (52) which enables the suction device (30) to be fastened in different positions on and relative to the hood (10). Suction device according to one of claims 28 until 33 , wherein the suction device (30) has fastening means (50) for fastening one or more bearing devices (40) for the displaceable mounting of the suction device (30) over the surface to be cleaned. suction device Claim 34 , wherein the suction device (30) at least one of Bearing devices (40) which are fastened by means of the fastening means (), preferably wherein the at least one bearing device (40) of the suction device is or has a steering roller. Suction device according to one of claims 28 until 35 , wherein the suction device (30) is designed such that the attachment of the suction device (30) to the hood (10) with the same means (50) as the attachment of the bearing devices (40) to the hood (10) and / or the Suction device (30) can be done. Cleaning system (1) comprising a cleaning device (2) according to one of Claims 1 until 27 wherein the cleaning system (1) has a suction device (4) coupled to the suction device (30), in particular a wet/dry vacuum cleaner. cleaning system after Claim 37 , wherein the suction device (4) has a dirty water separator and/or a dirty water pump. cleaning system after Claim 37 or 38 , wherein the cleaning system (1) has a high-pressure cleaning device (3) coupled to the spray device (20).

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