DE19546756A1 - Hand operated, high pressure surface cleaning apparatus - Google Patents

Abstract

The cleaning apparatus has a cleaning hood (1) movable over the surface to be cleaned and containing one or more fixed fluid nozzles (11). A suction device (13) sucks up the fluid which has exited the fluid nozzle. A demarcating supply device (14) such as a brush and/or sealing lip supplies the fluid to the suction device. This supply device is set inside the cleaning hood and is in contact with the surface being cleaned. The suction device has a suction opening which opens to the chamber demarcated by the cleaning hood, supply device and surface being cleaned.

Description

The invention relates to a high-pressure cleaning device with an over Cleaning surface of guidable or mobile cleaning hood.

High pressure cleaning devices have long been for cleaning any Surfaces, such as floors or surfaces of any Equipment, known. In these known devices, water, the a cleaning agent can also be added under high pressure to the sprayed on cleaning surface. The water mainly dissolves through its mechanical effect the dirt from the surface. A disadvantage of these known high pressure cleaning devices is that during the cleaning process Spray water and dirt heavily into the environment. One still has after a clean but also very wet surface. Especially with users then the known cleaning device in the interior must then ßend this water in a further operation, for example by opening wipe, be removed again. These cleaning devices have the additional disadvantage that the surfaces to be cleaned are not near moisture-sensitive devices may be located, which would otherwise be caused by the splashing water that occurs to a great extent would suffer damage.

DE 38 01 237 C1 and DE-GM 86 08 145 disclose a cleaning device for cleaning ceilings and walls, especially emerging colors lye sludge, which is sprayed with water onto the wall or ceiling Apply and vacuum this again through a hose, the hose funnel-shaped and is arranged such that the water through Gravity is fed into the hose. This well-known cleaning device is however unsuitable for flat surfaces as the water is insufficient from the  Area can be removed again.

Furthermore, DE-GM 90 15 554 discloses a cleaning device for waa fair or inclined surfaces, in which water is sprayed onto the horizontal or inclined surface is applied and either along the inclined surface drained into a gutter (e.g. a roof) or is sucked away by a centrally arranged suction connection. This got te cleaning device, however, has the disadvantage that liquid on the Surface remains, so that the cleaning is only incomplete. This poses in particular then it is a serious problem if damage is caused by cleaning substances should be removed from the surface to be cleaned, since if liquid remains, with which pollutants remain on the surface, so that no effective removal of the pollutants can be achieved.

The object of the invention is therefore to a high-pressure cleaning device admit the liquid remaining on the surface to be cleaned clearly decreased, d. H. leaves an almost dry, cleaned surface.

This object is achieved by a high-pressure cleaning device tion solved according to claim 1. Preferred embodiments of the invention are described in the subclaims.

According to the invention, therefore, a high-pressure cleaning device is used connect to a commercially available high pressure cleaner or to connect to a Commercially available water suction provided, which comprises: one over one cleaning surface movable cleaning hood, at least one in the Reini supply hood fixed liquid nozzle, a suction device with which one liquid discharged from the liquid nozzle is sucked off, and a be or delimiting feed device which the discharged liquid in the essentially supplies the suction device.

According to a preferred embodiment, the delimiting feed device  device is arranged inside the cleaning hood, the delimiting Feed device preferably essentially in contact with the one to be cleaned Area is.

There is thus an improved supply of the surface to be cleaned applied liquid ensures the suction device, whereby Liquid residues on the surface can be significantly reduced and thus create a drier surface.

Furthermore, the delimiting feed device preferably comprises a brush and / or a sealing lip, in particular made of plastic or rubber (PVC). Consequently there is still a scraping or scraping effect by the feed device, which further reduces the fluid residue.

The delimiting feed device preferably converges to the suction device direction or runs in their direction, with the delimiting feed device preferably has a polygonal or elliptical shape.

This results in an advantageously good supply of liquid and dirt particles and the like to the suction device through the delimiting feeding device guaranteed.

Furthermore, the suction device preferably has a suction opening, which to the through the cleaning hood, the feeder and the Cleansing area opens out bounded space, the suction opening is preferably adapted to the shape of the feed device, the suction opening is particularly preferably elliptical, in particular circular.

According to a further preferred embodiment, a liquid is under high pressure, preferably in the range from 140 bar to 300 bar, from the liquid omitted.  

Further preferred are at least two liquid nozzles symmetrical to the Suction device are provided, with at least three evenly be spaced, especially arranged in a line, liquid nozzles hen are.

An advantageously homogeneous liquid application is thus achieved, which ensures a good cleaning of the area and thereby reducing the amount of liquid, especially water and / or cleaning detergents tien, can be reduced, creating economic and environmental benefits be achieved.

The cleaning hood further preferably comprises an intermediate surface which delimits the room upwards, in which the cleaning liquid is inserted leads, the interface preferably the at least one liquid nozzle at least partially. A line is preferably provided, which which at least partially carries at least one liquid nozzle and this one which Supplies liquid.

According to a further preferred embodiment, the liquid comprises nozzle a spray limiting device, which the spray direction of the liquid keitsdüsen limited, the spray limiting device preferably one elongated, in particular essentially cylindrical or conical shape points.

There is thus a limitation and thus a predetermined or predetermined bare application of liquid guaranteed, which in particular a homo allows liquid to be applied, creating a good cleaning effect is achieved while limiting the amount of liquid applied.

The cleaning hood is preferably provided with a sealing device, which is designed so that the cleaning hood on the one hand without hindrance can be moved over the surface to be cleaned, and on the other hand prevented  the sprayed liquid escapes from the cleaning hood, the sealing device preferably having such a tight seal allows a sub by sucking off the sprayed liquid pressure is formed below the cleaning hood and maintained can, the sealing device particularly preferably sealing bristles and / or at least one sealing lip, in particular made of plastic or rubber includes.

The brush or bristle of the delimiting feed is particularly preferred device higher or protruding or projecting than the sealing bristles the sealing device. Thus, a better supply of cleaning Liquid to the suction device is reached because the brush is delimiting Feeder better on the surface to be cleaned, especially because of the Elasticity of the brush is present, which results in an increased "scraping effect" or removal the liquid is obtained from the surface.

A supportive brushing effect is thus still achieved, whereby Dirt particles can be separated more easily from the surface to be cleaned.

Furthermore, the cleaning hood preferably has adjustable rollers with which they are preferably at an adjustable distance above the one to be cleaned Surface is movable.

According to a preferred embodiment, the cleaning hood has a approximately rectangular shape, which preferably has a working width in the area from 20 to 60 cm, particularly preferably from about 40 cm, the Cleaning hood is preferably made of stainless steel.

The cleaning liquid used preferably has a temperature in Range from 4 to 90 ° C and preferably comprises or consists of a Mixture of water and usual cleaning and / or disinfection chemicals  kalien, and in particular from water with a detergent additive of up to 40% by weight.

According to a further preferred embodiment, the suction device leads device the extracted liquid to a filter or a water suction device, the filters out the dirt in the liquid.

The cleaning hood is preferably via a joint with a for guiding the Cleaning hood serving stem connected, the stem preferably in shape a pipe is executed through which the extracted liquid is discharged being, and taking cleaning liquid under pressure the nozzles over a high pressure hose is supplied, which is preferably attached to the stem. Of the High pressure hose is preferably with a preferably attached to the handle of Manually operated pressure valve connected and preferably has connections, which can be connected to a standard high-pressure cleaner.

Three, four or five liquid nozzles are preferred in the cleaning hood, arranged.

In the cleaning hood, a known one is also particularly preferred Dirt blaster arranged. It will thus improve cleaning of the reini area.

According to a preferred embodiment of the present invention, the at least one liquid nozzle with respect to the normal of those to be cleaned Surface inclined, and preferably such that that from the liquid nozzle escaping liquid jet a directional component to the suction device has.

It is thus achieved that dirt particles which are released by the liquid jet from the surface to be cleaned are catapulted or flung towards the suction device or the delimiting feed device, so that improved removal of the liquid containing the dirt particles is achieved . The same applies to atomized liquid particles that are located in the room above the surface to be cleaned. According to this embodiment, the limiting or delimiting feeder device can feed the liquid with increased efficiency to the suction device, since increased speeds of the liquid particles along the direction of movement (in particular along the direction R in FIG. 3) of the cleaning hood are achieved, as a result of which this bounce off particularly on the walls of the feed device towards the suction device. Accordingly, an improved removal of the liquid is guaranteed.

The nozzles with which the cleaning liquid is located are preferably located below Pressure is sprayed onto the surface to be cleaned within a cleaning process hood, which is guided over the surface to be cleaned and which prevents Splashing water escapes. Additionally is inside this cleaning hood attached a suction device with which the sprayed liquid and the Dirt can be removed in the same operation, so that after Cleaning process the surface is only moderately moist and not so wet as with the high-pressure cleaning devices customary up to now. The invent High-pressure cleaning device according to the invention is therefore particularly suitable for cleaning interiors.

The cleaning hood preferably has a rectangular cross section and is attached to a handle via a joint, with which an operator can use the Cleaning hood can easily lead over the surfaces to be cleaned, such as you know this from a conventional vacuum cleaner, for example. The stalk is advantageously designed as a tube through which the dirty Reini liquid is sucked off. This tube can also advantageously a pressure hose with which the cleaning liquid to be sprayed on the nozzles in the cleaning hood is attached.

The cleaning hood is sealed to the outside, so when cleaning  no splash water can get to the outside and thus through the Ab suck the dirty cleaning liquid below the cleaning hood can form a vacuum. The seal can, for example, via ver adjustable bristles are made, which it along with adjustable at the bottom the cleaning hood attached rollers allow the cleaning hood at an adjustable distance over the surface to be cleaned can be.

The pump for sucking up the dirty liquid and also the known devices for generating a liquid jet with high Pressure is either stationary in a separate housing or for example on a mobile device during the cleaning process led afterwards. The high-pressure cleaning device according to the invention can advantageously also be designed so that its pressure hose commercially available high-pressure cleaners can be connected.

If the surfaces to be cleaned are soiled substances that are hazardous to the world, so can the extracted Reini liquid must also be passed through a filter before it is disposed of filters out the dirt so that it can be disposed of separately.

Normal water can be used as the cleaning liquid. For reinforcement The cleaning effect or for simultaneous disinfection can reduce this but also cleaning and / or disinfection chemicals are added. The liquid can also be heated.

In the following, the invention is invented using an exemplary embodiment high pressure cleaning device according to the invention with reference to the drawing mentions explained in more detail; show it

Fig. 1 is a perspective view of a preferred embodiment of the high-pressure cleaning device according to the invention,

Fig. 2 is a partially sectioned side view of the apparatus shown in Fig. 1,

Fig. 3 is a bottom view of the cleaning cover, which Darge presented in Fig. 1 High-pressure cleaning device,

Fig. 4 is a bottom view of another cleaning hood of a wide ren embodiment of the high pressure cleaning device according to the invention and

Fig. 5 is a bottom view of another cleaning hood of a wide ren embodiment of the high pressure cleaning device according to the invention.

As shown in FIG. 1, includes an embodiment of the high-pressure cleaning device according to the invention a cleaning cover 1, which can be moved on a stem 2 via the surface 3 to be cleaned. The stem 2 is advantageously, as shown in Fig. 1, formed as a tube, connected to a suction device 13 and also serves as a suction pipe for removing the suction hood in the cleaning supply 1 contaminated cleaning liquid. At one end of the suction pipe 2 , a hose 4 is attached, which is connected to a pump, not shown here, which sucks up the dirty liquid, possibly through a filter with which the dirt can be filtered out of the liquid and then finally the Disposal. On the stem 2 , as shown here, a pressure line 5 is advantageously also fastened, with which the cleaning liquid is supplied from a commercially available pressure generating device, not shown here, to the nozzles 11 located in the cleaning hood 1 . At the top of the handle 2 , in a position that is easy to reach for the operator, a high-pressure valve 7 , which can be actuated manually, for example via a pistol grip 6, is attached, with which the supply of the cleaning liquid can be switched on and off.

The cleaning hood 1 further comprises rollers 8 with which it can be guided over the surface 3 to be cleaned at a predetermined or predeterminable height. This height can be freely adjusted via height adjustment devices 9 , in particular adjusting screws of the rollers 8 . The rollers 8 can also be pivoted or rotated about a vertical axis, so that the cleaning hood 1 can be easily controlled. At its side facing the surface to be cleaned, the cleaning 3 peripheral hood 1 in particular adjustable, bristles 10, and at least one sealing lip with which the Home Care hood 1 splash proof is completed against the environment. By this conclusion it is also possible to create a vacuum or vacuum by sucking off the dirty liquid below the cleaning hood.

FIG. 2 shows a side view of the cleaning device with a partial section through the cleaning hood 1 . Nozzles 11 are provided through which the cleaning liquid supplied via the pressure line 5 and line 11 'is sprayed or applied onto the surface 3 to be cleaned. The pressure line 5 is connected via a sleeve 15 to the cleaning hood 1 . The sleeve 15 can have a straight or curved shape.

Serving as a suction tube stem 2 is movably connected via a hinge 12 to the cleaning hood 1 and thus allows a flexible movement of the cleaning hood 1 over the surface 3rd

A view from below of the cleaning hood 1 is shown in FIG. 3. The Darge presented embodiment of the present invention comprises five adjacent nozzles 11 through which the cleaning liquid is sprayed onto the surface to be cleaned. The nozzles 11 are evenly spaced, preferably aligned and arranged symmetrically with respect to the suction device 13 . In further embodiments, not shown, one, two, three or four liquid nozzles 11 are arranged in the cleaning hood 1 . In a further embodiment, not shown, a dirt grinder known per se is arranged in the vicinity of the liquid nozzles 11 and supports the detachment of dirt from the surface 3 to be cleaned.

The surface high-pressure cleaning device according to the invention further comprises a suction device 13 . According to a preferred embodiment, the suction device 13 comprises an opening 13 , through which the dirty cleaning liquid is sucked off again. The opening 13 , the tube 2 and the hose 4 have cross-sectional areas which are sufficient to suck off the applied cleaning liquid with a sufficient throughput.

In the illustrated embodiment, four running rollers are attached to the cleaning hood 1 in order to guide the cleaning hood with little friction and easily from the surface 3 to be cleaned. Other numbers of Laufrol len 8 are also possible depending on the shape of the cleaning hood and the surface to be cleaned. Within the space that is enclosed by the cleaning hood 1 , demarcation structures or a bordering feed device 14 can be provided, which delimit the space bounded by the bristles 10 .

As can be seen from FIG. 3, liquid can be applied from the liquid nozzles or outlets 11 at a uniform distance to the surface 3 to be cleaned. By moving the cleaning hood 1 forward (direction of arrow R in FIG. 3), the liquid applied to the surface 3 to be cleaned, which liquid has at least partially taken up the dirt on the surface 3 , is guided into the vicinity of the suction device 13 , and supported by the delimiting feed device 14 . The delimiting feed device 14 preferably has a brush and / or sealing lip that is in contact with the surface 3 and / or a sliding sealing device. A vacuum or vacuum is applied via the suction device 13 , which removes the liquid applied to the surface and / or the liquid particles atomized in the space delimited by the cleaning hood 1 and the delimiting feed device. The removal or extraction or the suction of the liquid is supported by the confining or limiting feeder 14, as the liquid during the movement in direction R of the cleaning cover 1 in the direction of the suction means 13 are fed toward this. The opening 13 of the suction device 13 is particularly adapted to the shape of the delimiting feed device in order to avoid undesirable liquid build-ups or residues. The delimiting feed device 14 is preferably arranged within the cleaning hood 1 and in particular has brushes and / or a sealing lip. The delimiting feed device 14 expediently has walls or interfaces which are aligned in a tapering manner and preferably converge essentially towards the suction device.

The liquid nozzles 11 have in particular spray limiting devices which limit the spray cone or the spray angle of the liquid emerging from the nozzles 11 . The spray limiting device in particular allows the application of the liquid to the surface 3 to be cleaned to be adjusted, in particular optimized, by aligning and adjusting the spray cones, in particular to enable uniform application or application of the liquid to the surface 3 .

The cleaning hood 1 preferably comprises an intermediate surface 16 which is arranged between the upper cover 17 of the cleaning hood 1 and the surface 3 to be cleaned. The intermediate surface 16 preferably delimits the space into which the cleaning liquid is introduced via the liquid nozzles 11 , whereby in particular an improved application of the liquid is achieved. The intermediate surface 16 can preferably carry the at least one liquid nozzle 11 .

Two adjacent liquid nozzles are preferred by a distance A of about 80 mm to about 1 50 mm, particularly preferably about 120 mm spaced. The limiting device preferably has an elongated shape with a lateral dimension or length L of about 70 mm and a width  B of about 20 mm.

The circular suction opening 13 shown in FIG. 3 preferably has an inner diameter of approximately 40 mm.

According to a further embodiment shown in FIG. 4, the delimiting feed device 14 'is arranged adjacent to the edge of the cleaning hood 1 ' and also has a polygonal shape. In this embodiment, three rollers 8 are attached to the cleaning hood 1 '. This embodiment allows a particularly compact design of the cleaning hood 1 ', which is therefore suitable for use for smaller or angled areas.

According to the embodiment of the present invention shown in FIG. 5, a delimiting feed device 14 'is arranged within the cleaning hood 1 , which has an elliptical shape, the tapering walls or delimitations of the feed device 14 ' forming a trough. In the entferntesten from the nozzle 11 area of the walls, the opening 13 'of the suction device, which is adapted to the shape of the particular gene Wandun and preferably has an elliptical shape. It is thus a liquid build-up at the opening 13 'avoided, whereby the cleaning efficiency of the high-pressure cleaning device is increased.

According to a further embodiment, not shown, it is also possible to increase the cleaning effect by adding additional inside the cleaning hood Lich rotating brushes are arranged in addition to loosening the Contribute dirt.

Water and / or chemical cleaning agent can preferably be used as the cleaning liquid agent and / or liquid provided with particles, in particular sand and / or a gas mixture and / or a gas / particle mixture can be used.  

Overall, the present invention provides a high pressure cleaning device that allows cleaning work also indoors and in problem areas such as factory buildings, dairies, breweries, slaughterhouses, shopping centers, Underground garages, suburban and underground platforms and workshops can be removed quickly and easily lead without the cleaning liquid used splashing around and eventu ell damages liquid-sensitive devices and without it being necessary in a second step, the cleaning liquid from the wet cleaned Remove surfaces again.

Reference list

1 , 1 ′ cleaning hood
2 stem
3 surface to be cleaned
4 hose (for dirty detergent)
5 pressure line
6 pistol grip;
7 high pressure valve
8 castors
9 height adjustment device
10 bristles
11 nozzles
11 ′ line
12 joint
13 Opening for suction pipe
14 , 14 ' delimiting feed device
15 sleeve
16 interface
17 top cover

Claims (33)

1. High-pressure cleaning device for connection to a commercially available high-pressure cleaner, which comprises:
a cleaning hood ( 1 ; 1 ′) which can be moved over a surface to be cleaned ( 3 ),
at least one liquid nozzle ( 11 ) fixed in the cleaning hood ( 1 ),
a suction device ( 13 ; 13 ') with which a liquid discharged from the liquid nozzle ( 11 ) is sucked off, and
a delimiting feed device ( 14 ; 14 ') which essentially supplies the liquid let out to the suction device ( 13 ; 13 '). 2. High-pressure cleaning device according to claim 1, wherein the limiting supply device ( 14 ; 14 ') is arranged inside the cleaning hood ( 1 ; 1 '). 3. High-pressure cleaning device according to one of the preceding claims, wherein the delimiting feed device ( 14 ; 14 ') is in wesentli Chen in contact with the surface to be cleaned ( 3 ). 4. High-pressure cleaning device according to one of the preceding claims, wherein the delimiting feed device ( 14 ; 14 ') comprises a brush and / or a sealing lip, in particular made of plastic. 5. High-pressure cleaning device according to one of the preceding claims, wherein the delimiting feed device ( 14 ; 14 ') converges or tapes towards the suction device ( 13 ; 13 '). 6. High-pressure cleaning device according to one of the preceding claims, wherein the delimiting feed device ( 14 ; 14 ') has a polygonal or elliptical shape. 7. High-pressure cleaning device according to one of the preceding claims, wherein the suction device ( 13 ; 13 ') has a suction opening ( 13 ; 13 ') which leads to the through the cleaning hood ( 1 ), the feed device ( 14 ; 14 ') and the to the area to be cleaned ( 3 ). 8. High-pressure cleaning device according to claim 6, wherein the suction opening ( 13 ; 13 ') of the shape of the feed device ( 14 ; 14 ) is adapted, wherein the suction opening ( 13 ; 13 ') is preferably elliptical, in particular circular. 9. High-pressure cleaning device according to one of the preceding claims, wherein a liquid is discharged from the liquid nozzles ( 11 ) under high pressure, preferably in the range from 140 bar to 300 bar. 10. High-pressure cleaning device according to one of the preceding claims, wherein at least two liquid nozzles ( 11 ) are provided symmetrically to the suction device ( 13 ; 13 '). 11. High-pressure cleaning device according to one of the preceding claims, wherein at least three evenly spaced, in particular arranged in a line liquid nozzles ( 11 ) are provided. 12. High-pressure cleaning device according to one of the preceding claims, wherein the cleaning hood ( 1 ) comprises an intermediate surface ( 16 ) which delimits the space upwards into which the cleaning liquid is introduced, the intermediate surface ( 16 ) preferably the at least one liquid nozzle ( 11 ) at least partially. 13. High-pressure cleaning device according to one of the preceding claims, wherein a line ( 11 ') is provided which at least partially carries the at least one liquid nozzle ( 11 ) and which supplies the liquid liquid. 14. High-pressure cleaning device according to one of the preceding claims, wherein the liquid nozzle ( 11 ) comprises a Sprühbegrenzungseinrich device that limits the spray direction of the liquid nozzles. 15. High pressure cleaning device according to claim 14, wherein the spraying boundary device an elongated, in particular essentially cylin has a tapered or conical shape. 16. High-pressure cleaning device according to one of the preceding claims, wherein the cleaning hood ( 1 ; 1 ') is provided with a Abdichtungvor direction ( 10 ) which is designed such that the cleaning hood ( 1 ) on the one hand without hindrance over the surface to be cleaned ( 3rd ) can be moved, and on the other hand it is prevented that the sprayed liquid escapes from the cleaning hood ( 1 ). 17. High-pressure cleaning device according to claim 16, wherein the sealing device ( 10 ) enables a seal so tight that a vacuum under the cleaning hood ( 1 ) can be formed and maintained by suction of the sprayed liquid. 18. High-pressure cleaning device according to claim 16 or 17, wherein the sealing device comprises sealing bristles ( 10 ) and / or at least one sealing lip. 19. High-pressure cleaning device according to claim 18 and claim 4, wherein the brush of the delimiting feed device ( 14 ; 14 ') is protruding gender than the sealing bristles ( 10 ) of the sealing device. 20. High-pressure cleaning device according to one of the preceding claims, wherein the cleaning hood ( 1 ; 1 ) preferably has adjustable rollers ( 8 ) with which it can preferably be moved at an adjustable distance over the surface to be cleaned ( 3 ). 21. High-pressure cleaning device according to one of the preceding claims, wherein the cleaning hood ( 1 ) has an approximately rectangular shape, which preferably has a working width in the range from 20 to 60 cm, particularly preferably of about 40 cm. 22. High-pressure cleaning device according to one of the preceding claims, wherein the cleaning hood ( 1 ) is made of stainless steel. 23. High pressure cleaning device according to one of the preceding An say, the cleaning liquid used a temperature in Has a range of 4 to 90 ° C. 24. High pressure cleaning device according to one of the preceding An sayings, the cleaning liquid used from a mixture of water and common cleaning and / or disinfecting chemicals, and especially from water with a detergent additive of up to 40 % By weight. 25. High-pressure cleaning device according to one of the preceding claims, wherein the suction device ( 13 ; 13 ') supplies the suctioned liquid speed to a filter that filters out the dirt in the liquid. 26. High-pressure cleaning device according to one of the preceding claims, wherein the cleaning hood ( 1 ; 1 ') via a joint ( 12 ) with a for guiding the cleaning hood ( 1 ; 1 ') serving stem ( 2 ) is connected. 27. High-pressure cleaning device according to claim 26, wherein the stem ( 2 ) is designed in the form of a tube through which the extracted liquid is discharged. 28. High-pressure cleaning device according to claim 26 or 27, wherein cleaning liquid is supplied under pressure to the nozzles ( 11 ) via a high-pressure hose ( 5 ), which is preferably attached to the stem ( 2 ). 29. High-pressure cleaning device according to claim 28, wherein the high pressure hose ( 5 ) with a preferably on the stem ( 2 ) attached to the manually operable pressure valve ( 7 ) is connected. 30. High-pressure cleaning device according to claim 28 or 29, wherein the high-pressure hose ( 5 ) has connections which can be connected to a commercially available high-pressure cleaner. 31. Surface high-pressure cleaning device according to one of the preceding claims, wherein in the cleaning hood ( 1 ; 1 ') three, four or five liquid nozzles ( 11 ) are arranged. 32. Surface high-pressure cleaning device according to one of the preceding claims, wherein in the cleaning hood ( 1 ; 1 ') a known dirt grinder is additionally arranged. 33. Surface high-pressure cleaning device according to one of the preceding claims, wherein the at least one liquid nozzle ( 11 ) is inclined with respect to the normal of the surface to be cleaned ( 3 ), and preferably in such a way that the liquid jet emerging from the liquid nozzle is a directional component to the suction device ( 13 ; 13 ') has.