EP3814027A1

EP3814027A1 - High-pressure cleaning device, cleaning dispersion and arrangement of high-pressure cleaning device in relation to a surface

Info

Publication number: EP3814027A1
Application number: EP19730772.1A
Authority: EP
Inventors: Dr. Andreas SATTLER; Stefan Mayer
Original assignee: Washtec Holding GmbH
Current assignee: Washtec Holding GmbH
Priority date: 2018-06-27
Filing date: 2019-06-13
Publication date: 2021-05-05
Also published as: DE102018115510A1; WO2020002001A1; CN112423903A; US20210252535A1

Abstract

The invention relates to a high-pressure cleaning device (1; 101) for a material-friendly cleaning of surfaces soiled by fine particles, particularly motor vehicle surfaces (2), said device comprising a high-pressure pump (4) for delivering a cleaning product to a high-pressure jet nozzle (8) where the cleaning product emerges in a high-pressure jet (10), wherein the cleaning product comprises a cleaning dispersion (6) with a carrier fluid (14) and with solid cleaning particles (12; 212) having a density of between 0.8 g/cm³ and 3.5 g/cm³, particularly between 0.9 g/cm³ and 2.2 g/cm³, and the high-pressure cleaning device (1; 101) is configured such that, when a cleaning particle (12; 212) emerges from the high-pressure jet nozzle, it has a kinetic energy of minimum 1 - 10^-10 J and maximum 2 - 10^-4J, preferably minimum 2 - 10^-9 J and maximum 7-10^-5J, and most particularly preferably between minimum 4 - 10^-7 J and maximum 9 - 10^-6 J. Furthermore, the invention relates to a cleaning dispersion for a high-pressure cleaning device, and to an arrangement of a high-pressure cleaning device and a surface to be cleaned according to the alternative independent claims.

Description

High pressure cleaning device, cleaning dispersion and arrangement of high pressure cleaning device to surface

description

Technical field

The invention relates to a (brushless) high-pressure cleaning device for gentle cleaning, in particular fine cleaning, of surfaces soiled with fine particles, in particular motor vehicle surfaces, with a

High-pressure pump for conveying a cleaning product or a cleaning agent to a high-pressure jet nozzle, on which the cleaning product is in one

High pressure jet emerges. In addition, the present invention relates to a

Cleaning dispersion for a high-pressure cleaning device and an arrangement of a high-pressure cleaning device and a surface to be cleaned according to the preambles of the independent claims.

High-pressure cleaning devices are known from the prior art, which radiate a cleaning product at high pressure onto an object, such as a vehicle, in order to remove dirt particles and undesirable substances via the action of the

To remove high pressure jet and to clean the surface of the object. However, these conventional high-pressure cleaning devices have the disadvantage that even after cleaning with the high-pressure jet, fine particles remain on the surface to be cleaned, which can only be caused by a further one

Post-treatments, such as brush washing or manual polishing with wipes, should be (mostly) removed. In the field of vehicle washing, these remaining fine particles, which are deposited, for example, during a normal drive with a vehicle, are known as so-called undesirable “gray veils”, which are particularly evident on light, especially white, painted surfaces and which are currently being removed with a lot of effort after treatment must become. It is therefore an object of the present invention to avoid or at least alleviate the disadvantages of the prior art and in particular to reduce one

To provide a high-pressure cleaning device, a cleaning product and an arrangement of a high-pressure cleaning device and a surface to be cleaned, with which surfaces which are both efficient and cost-effective and also gentle on the material, in particular vehicle surfaces, can be cleaned with a high degree of cleaning success, without the use of brushes and with a reduction in cleaning time can. In particular, fine particles adhering to the surface should be reliably removed.

This task is carried out with regard to a generic

High-pressure cleaning device according to the invention by the features of claim 1, with regard to a generic cleaning product according to the invention by the features of claim 9 and with regard to a generic arrangement of a high-pressure cleaning device to a surface to be cleaned

solved according to the invention by the features of claim 13.

The task is carried out in a generic (vehicle)

High-pressure cleaning device according to the invention solved in that the

Cleaning product a cleaning dispersion with a carrier fluid, in particular water, and with solid cleaning particles with a density between 0.8 g / cm ³ and 3.5 g / cm ³ , in particular between 0.9 g / cm ³ and 2.2 g / cm ³ , and the

High-pressure cleaning device is configured such that a cleaning particle on leaving the high-pressure jet nozzle has a kinetic energy of at least 1 - 10 ¹⁰ J and at most 2 - 10 ^ J, preferably of at least 2 -10 ⁹ J and at most 7 -10 ⁵ J, and entirely particularly preferably between at least 4 - 10 ⁷ J and a maximum of 9 -10 ⁶ J. The high pressure jet emerging from the high pressure jet nozzle

High pressure cleaning device is made of a cleaning dispersion with solid

Cleaning particles are formed, which with regard to an optimal (cleaning) effect both have to meet a specific range of density and also with a predetermined kinetic energy from the high-pressure jet nozzle

High-pressure cleaning device must step out. It has been shown in complex series of experiments and analyzes that exactly these two parameters, namely the density of the cleaning particles and the kinetic energy of an individual

Cleaning particles when exiting the high pressure jet nozzle, the decisive parameters for an optimal cleaning effect in the sense of a removal of

Are fine particles of surfaces. If one of the two parameters of the cleaning particle in a high-pressure cleaning device lies outside the specified range, either the cleaning effect is undershot or the surface to be cleaned is damaged if it is exceeded. Seen in a two-dimensional map, the (density) range to be achieved is limited by the parameters density and kinetic energy.

The advantage of the high-pressure cleaning device according to the invention with the cleaning dispersion can be seen in particular in the fact that it can also be used to very well clean surfaces which are in gaps or

Undercuts, for example on a B-pillar of the vehicle, a mirror or a rear spoiler, because the cleaning particles can penetrate into areas which brushes usually do not reach, since they only wipe over the surface and do not get into gaps or undercuts.

Advantageous embodiments are claimed in the subclaims and are explained below.

In a preferred variant, the cleaning particles can

Cleaning dispersion of the high-pressure cleaning device have an average longitudinal extent (longest dimension) of at least 20 pm and / or a maximum of 315 miti, in particular of at least 30 pm and / or a maximum of 200 pm. It has been shown that a further, essential parameter, which relates to a

The cleaning result of the high-pressure cleaning device affects the dimension of the cleaning particles contained in the high-pressure jet. The lower limit of the dimension parameter of 20 pm ensures that the

Fine particles are removed by the impact impulse. On the other hand, good manageability and a still satisfactory cleaning effect can be guaranteed up to the upper limit of the dimension. Are the

Cleaning particles too large, they tend to get into lines and hoses discontinue and form lumps when swirling, which can block mechanical components or close nozzles.

The speed of the high-pressure jet when it emerges from the high-pressure jet nozzle can preferably be at least 20 m / s and / or at most 80 m / s, in particular at least 40 m / s and / or at most 60 m / s. The speed of the high-pressure jet when it emerges from the high-pressure jet nozzle thus corresponds to that

Velocity of the cleaning dispersion and thus on the one hand that of the carrier fluid and on the other hand that of the cleaning particles. These speeds the

Cleaning dispersion or the cleaning particles have proven to be particularly advantageous for cleaning.

According to a further aspect of the invention, the

High-pressure cleaning device for a storage container / storage container

Have storage of the cleaning dispersion, which comprises a circulating device for circulating the cleaning dispersion in order to keep the distribution of the cleaning particles homogeneous, the circulating device in particular in the form of a

Stirring device, a circulation pump or a bubbler, which air into the

Blowing cleaning dispersion, is formed. The circulating device ensures that the cleaning particles do not deposit on the bottom or on the surface in the storage container, but that a homogeneous mixture of the

Cleaning dispersion is retained. The cleaning dispersion also fulfills the requirements for good storability and stirrability.

In a preferred embodiment, the high-pressure cleaning device upstream of the high-pressure pump can have a feed line which contains the ready-to-use cleaning dispersion with the cleaning particles and the

Carrier fluid, which in particular has water as the carrier fluid, before

High pressure area feeds. In this variant, the cleaning dispersion can either be sucked in by suppressing the high-pressure pump in front of the high-pressure area, or the cleaning dispersion can be fed to the high-pressure pump with the aid of a pressure booster pump. In an alternative embodiment, the high-pressure cleaning device upstream of the high-pressure pump can have two supply lines, in which a first supply line (as a supply line) supplies a cleaning concentrate with the cleaning particles, which in particular has a washing fluid as a carrier fluid, and in which a second supply line provides a further fluid, in particular Water, which together form the ready-to-use cleaning dispersion, so that the

Cleaning concentrate and the water are mixed before the high pressure area. In this way, the special cleaning concentrate can be kept compact so that it can be easily transported, stored and handled, whereas the larger part (ready to use) in terms of mass and volume.

Cleaning dispersion, namely the further fluid, in particular water, can be added on site to the high-pressure device. For example, the

Cleaning device directly to a locally available water connection

connected so that only the cleaning concentrate has to be provided by a supplier.

According to a further aspect, the high-pressure cleaning device can have a concentrate container (as a storage container) for storing the cleaning concentrate and the cleaning concentrate can be supplied via the first feed line by means of a metering device, in particular in the form of a metering pump. With the help of the metering pump, a precisely defined amount of the cleaning concentrate and the cleaning dispersion or the can be withdrawn from the concentrate container

High pressure jet can thus be supplied.

In a further, alternative embodiment, the

High-pressure cleaning device in front of the high-pressure jet nozzle and downstream of the high-pressure pump have at least one high-pressure injector in order to

Inject cleaning concentrate with the cleaning particles in the high pressure area. In this variant, the cleaning concentrate is added in the high-pressure region, that is to say after the high-pressure pump, in order to combine it with another fluid conveyed by the high-pressure pump at high pressure

To form cleaning dispersion in front of the high pressure jet nozzle. This has the advantage that the cleaning particles are only in an area downstream of the high-pressure pump be added so that, for example, the risk of wear on the high-pressure pump is reduced. The other fluid, especially water, is conveyed by the high-pressure pump, however, takes up only before

High pressure jet nozzle with the cleaning concentrate, brings it to the high pressure before exiting and to a corresponding speed when exiting with accompanying kinetic energy of the cleaning particles.

In particular, the pressure generated by the high-pressure pump at the high-pressure jet nozzle can be between 20 and 60 bar.

It is preferred that the high pressure pump is designed in the form of a centrifugal pump. This type of pump provides an inexpensive and compact high pressure cleaning device pump capable of

to promote the required high volume flow. Other types of high pressure pumps are basically also conceivable.

The at least one high-pressure jet nozzle from which the high-pressure jet emerges is preferably designed in the form of a flat jet nozzle. Through the

A large jet can be blasted with a large area within a short time in a defined manner.

Such a high-pressure cleaning device according to the invention can

in particular in the form of a portal washing system without brushes with high-pressure jet nozzles or as a washing line with high-pressure jet nozzles. It is also possible to use the high pressure cleaning device in a system with little or no degree of automation, e.g. in a self-service washing system, in which the user can apply the cleaning dispersion manually to the surface to be cleaned using a high-pressure lance.

The task is for a generic cleaning product for a

High-pressure cleaning device, which is designed as a cleaning dispersion, a carrier fluid and solid cleaning particles dispersed or distributed in the carrier fluid, solved according to the invention in that the cleaning particles have a density between 0.8 have g / cm ³ and 3.5 g / cm ³ . This range of the density parameter has proven to be advantageous for cleaning. In this context, density is understood to mean the mass density which the base material of the cleaning particles has in solid form.

The polymer cleaning particles are preferred. Have polymers

in particular the advantage that due to their low hardness of only 1 Mohs or a SHORE D hardness of less than or less than 95, surfaces to be cleaned,

In particular, clean the painted surfaces of vehicles gently without damaging the surface. Damage potential is thus minimized. The polymer cleaning particles have also proven to be particularly effective in their cleaning action. Another advantage of polymer cleaning particles is that they strongly contaminate the surface by the cleaning particles themselves

prevention. A large number of industrially produced polymers can be considered as the polymer. It is particularly important to choose the right one

Particle properties, the chemical nature of the polymer is of secondary importance. Polymer also has the advantage that the cleaning particles can be removed particularly easily after cleaning (by suitably adjusting the size of the cleaning particles), in particular rinsed off.

The cleaning particles contained in the cleaning dispersion are preferably property-stable in the carrier fluid. The term property stable means that the cleaning particles do not or do not change in their properties over time in the cleaning dispersion after the creation of a suitable delivery form

change process-relevant manner. In particular, there are no chemical or physical processes through which the particles change their size during storage or storage, combine to form agglomerates that are no longer soluble, or dissolve completely or partially. The cleaning dispersion can be stored and pumped in particular at all times. Preferably, the requirement for the cleaning dispersion or its property is also that it can be stirred up even after a longer period of time. In particular, the cleaning particles are also temperature-stable or temperature-resistant and withstand a high temperature. The temperature of the cleaning dispersion is preferably in the region of room temperature and is in particular approximately 20 ° C.

According to one aspect of the invention, the cleaning particles can contain an inorganic filler as the core, which is enclosed or encased by the polymer. Such a configuration of the cleaning particles brings about a fusion of several advantages. On the one hand, the cleaning particles are soft on the outside and a potential damage is reduced accordingly, and on the other hand, the inorganic fillers introduced, for example spar or barite, bring about that, in particular with a higher density of the filler, the

Cleaning particles have improved handling with high kinetic energy. At this point it is pointed out that the described

Concept of an inorganic filler coated with polymer

Cleaning particles, is a separate invention, which can optionally be made the subject of a separate patent application.

Preferably, the cleaning particles of the invention

Cleaning dispersion have an average longitudinal extent (longest dimension) of at least 20 pm and / or a maximum of 315 miti, in particular of at least 30 pm and / or a maximum of 200 pm.

It is preferred that the cleaning particles have a grain structure and in particular are microporous and / or have a star shape. The shape of the cleaning particles also influences the desired one

Cleaning result. So if the shape of the cleaning particles is not spherical, but has a grain structure, the corners and edges of one have an effect

Grain structure has a positive effect on the cleaning result.

In particular, the cleaning particles can be used

Cleaning dispersion have a mass fraction between 0.1% and 5%, in particular between 1% and 3%, of the cleaning dispersion. If the concentration or the mass fraction of the cleaning dispersion is too low, a necessary cleaning time is prolonged, whereas too high a concentration the cleaning dispersion makes it difficult to handle. A range between 0.1 and 5% by weight of the

Cleaning particles in the cleaning dispersion therefore weigh between one

Cleaning effect per time and one handling. The concentration or mass fraction of the cleaning particles is corresponding to a number of possible ones

Hitting the fine particles for a cleaning success is a crucial parameter.

The task is in a generic arrangement of one

High pressure cleaning device and from a surface to be cleaned

solved according to the invention in that the cleaning product

Cleaning dispersion with a carrier fluid and with solid cleaning particles with a density between 0.8 g / cm ³ and 3.5 g / cm ³ , in particular between 0.9 g / cm ³ and 2.2 g / cm ³ , and the high-pressure cleaning device is configured such that a cleaning particle, when striking the surface to be cleaned, has a kinetic energy of at least 1-10 ¹⁰ J and a maximum of 2 -10 ^ J, preferably of at least 2 -10 ⁹ J and a maximum of 7 -10 ⁵ J, and very particularly preferably has between at least 4 -10 ⁷ J and at most 9 -10 ⁶ J. In the arrangement according to the invention, both the density range of the cleaning particles and the range of the

predetermined kinetic energy of the cleaning particles when they hit the surface to be cleaned are the decisive parameters for an optimal

Cleaning effect to remove fine particles from the surface. The

High-pressure cleaning device can have the features of the high-pressure cleaning device according to the invention.

In the arrangement, a distance between the high-pressure cleaning device and the surface to be cleaned, in particular between the high-pressure jet nozzle and the surface to be cleaned, can preferably be less than 1 meter.

In an advantageous embodiment of the arrangement of the high-pressure cleaning device and of the surface to be cleaned, the kinetic energy of the cleaning particle when it emerges from the high-pressure jet nozzle essentially corresponds to the energy when the cleaning particle strikes the surface. Especially when the cleaning dispersion contains a high proportion of a liquid Carrier fluids, in particular water, the cleaning particles are transported or carried by the carrier fluid, air resistance is minimized and the cleaning particles lose only a very small proportion of their kinetic energy on their way between exiting the high-pressure jet nozzle and hitting the surface.

Brief description of the figures

The present invention will hereinafter be more preferred based on

Exemplary embodiments explained in more detail with reference to the accompanying figures. Show it:

1 is a side view of a surface according to the prior art, in which fine particles remain despite the high-pressure jet applied,

Fig. 2 is a schematic conceptual representation of an inventive

High-pressure cleaning device of a first preferred embodiment,

Fig. 3 is a perspective view of the conceptually shown

2 in one embodiment as a car wash unit,

Fig. 4 is a schematic conceptual representation of an inventive

High-pressure cleaning device of a second preferred embodiment with two feed lines in front of the high-pressure pump,

5 shows a schematic cross-sectional view of a cleaning particle of a cleaning dispersion according to the invention of a preferred embodiment, and

Fig. 6 shows a microscopic section of an inventive

Cleaning dispersion of a further preferred embodiment.

The figures are schematic in nature and are intended only for understanding the

Serve invention. Identical elements are provided with the same reference symbols. The Features of the different exemplary embodiments can be interchanged.

Description of the embodiments

For explanation, FIG. 1 shows a cross-sectional view of a surface on which fine particles remain despite cleaning with a high-pressure water jet. The vertical high pressure water jet is deflected to the sides parallel to the surface. According to the invention, a

High-pressure cleaning device and a cleaning dispersion for one

High-pressure cleaning device created with which the fine particles can be removed mechanically without damaging the surface to be cleaned itself.

FIG. 2 shows a schematic concept illustration in a side view of a high-pressure cleaning device 1 according to the invention in accordance with a first preferred embodiment for cleaning material gently

Motor vehicle surfaces 2 and an arrangement according to the invention

High pressure cleaning device 1 and the vehicle surface 2. The

High-pressure cleaning device 1 means for brushless cleaning

For this, a high-pressure pump 4 in the form of a centrifugal pump, which conveys a cleaning product, which is in the form of a cleaning dispersion 6, to a high-pressure jet nozzle in the form of a flat jet nozzle 8. From this

Flat jet nozzle 8, the cleaning dispersion 6 exits at high pressure as a high pressure jet 10 and finally strikes the vehicle surface 2 to be cleaned. In this embodiment, three flat jet nozzles 8 are shown by way of example, which are connected via a common distributor line 9.

Compared to the prior art, the

High-pressure cleaning device 1 as cleaning product has a cleaning dispersion 6 with water as carrier fluid 14 and with solid cleaning particles 12 contained therein, the cleaning particles 12 in this embodiment being ground

Polyurethane with a density between 1 g / cm ³ and 1, 25 g / cm ³ are present and from the flat jet nozzle 8 with a kinetic energy between at least 4 -10 ⁷ J and exit a maximum of 9 -10 ⁶ years. Through such a combination of the parameters “density” and “kinetic energy” of the cleaning particles, gentle cleaning and removal of gray veils by the applied high pressure jet 10 of the high pressure cleaning device 1 can be achieved. Specifically, they meet in the

High pressure jet 10 contained cleaning particles 12 on the at

Vehicle surface 2 adhering fine particles 18. The average longest

Dimension of the microporous and star-shaped grain structure

Cleaning particles 12 of the cleaning dispersion 6 are between 30 pm and 200 pm. Due to the small distance between the flat jet nozzle 8 and

Motor vehicle surface 2 and a high proportion of water as the carrier fluid of the ready-to-use cleaning dispersion 6 is the kinetic energy of the

Cleaning particles 12 when they strike vehicle surface 2 are approximately equal to the kinetic energy of cleaning particles 6 when they emerge from flat jet nozzle 8.

Upstream or upstream of the high-pressure pump 4 there is a feed line 20 which carries the ready-to-use cleaning dispersion 6

High-pressure pump 4 feeds via a booster pump 22. As an alternative to this embodiment with the pressure booster pump 22, the

High-pressure cleaning device 1 can also be designed without a booster pump 22, so that the high-pressure pump 4 has a negative pressure

Cleaning dispersion 6 itself. The cleaning dispersion 6 is held in a storage container 24 of the high-pressure cleaning device 1 and fed to the high-pressure pump 4 via the feed line 20.

So that the cleaning particles 12 are kept homogeneously distributed in the cleaning dispersion 6, the high-pressure cleaning device 1 for the storage container 24 has a circulating device in the form of a stirring device 26, which prevents the cleaning particles 12 from being concentrated in areas, for example on a bottom of the storage container 24. Alternatively or in addition to

Stirring device 26 can of course also be used with a circulating pump. The stirring device has a controllable electric motor as a drive, on the output shaft of which a stirrer is attached, which stirs the cleaning dispersion 6. Near the bottom of the reservoir 24 is at the end of the feed line Intake connector 28 is provided, which allows a good fluid intake. In addition, the intake manifold 28 can have an upstream filter in order to prevent larger or clumped cleaning particles 12 or undesired foreign bodies from being fed to the flap pressure pump 4.

FIG. 3 shows a perspective view of the flap pressure cleaning device 1 conceptually shown in FIG. 2 in an embodiment as

Wash unit. In contrast to the state of the art

Flochdruckreinigungsvorrichtung 1 completely without brushes or washing brushes like a side brush. On a statically attached to the floor of the car wash

cuboidal frame structure 30, a cleaning frame 32 is provided, which extends in a direction of travel A of a vehicle F

is translationally or linearly movable and can move with the vehicle F. The cleaning frame 32, which is translationally movable in the direction of travel A, has a nozzle bar 36 which is movable in the vertical direction between two vertical arms 34 and on which, in the longitudinal direction thereof, a plurality, e.g. seven, flat jet nozzles 8 are lined up. These flat jet nozzles 8 move with the cleaning frame 32 both in the horizontal direction and via the nozzle bar 36 in the vertical direction with respect to the frame structure 30. Thus, linearly moving and vertically movable flat jet nozzles 8 are realized, which in the vehicle F in particular the bonnet, the roof and the Trunk area can be cleaned gently. In order to also be able to clean the front area of the vehicle F, the flat jet nozzles 8 on the nozzle strip 36 can additionally be rotated in one plane in the vertical direction and in the direction of travel A.

The nozzle bar 36 can be seen as a section of the distribution line 9. The cleaning frame 32 of the flap pressure cleaning device 1 is fluidly connected via a line running on the arm 34 and via a flexible hose 38 to the remaining section of the distributor line 9 and allows a translational movement of the cleaning frame 32.

In addition to the nozzle bar 36, the flap pressure cleaning device 1 has on the frame structure 30 on two rear vertical struts as seen in the direction of travel A. flat jet nozzles 8 pointing inwards toward the vehicle F passing through for cleaning the side surfaces of the vehicle F. In a further embodiment, not shown, these flat jet nozzles can also be controllable

(open / close) so that only the flat jet nozzles 8 required for the vehicle F are put into operation according to a vehicle height.

The reservoir 24 with the cleaning dispersion 6 is only in FIG. 3

represented schematically, which is why for explanation again to the above

Description of Figure 2 is referenced. A distance between 0.1 and 1 meter can be regarded as an optimal distance between the flat jet nozzles 8 and the vehicle surface 2 of the vehicle F. The flock pressure cleaning device 1 is optimally adapted for cleaning smooth surfaces 2 such as paint and glass of the vehicle F.

FIG. 4 shows a schematic concept illustration in a side view of a high-pressure cleaning device 101 according to the invention of a further, second preferred embodiment. In contrast to the first preferred

2 and 3, the high-pressure cleaning device 101 has two feed lines, in which a first feed line is again a feed line 120, which contains a cleaning concentrate 106 with the cleaning particles 12 contained and with a small amount of water and a washing fluid as carrier fluid 114 of the high-pressure pump 4 feeds by means of a finely adjustable metering pump 122 and in which a second feed pipe 123 supplies water in order to collect the ready-to-use product

To form cleaning dispersion 6. The cleaning concentrate is kept in a concentrate container 124 (as a kind of storage container) and by means of a

Stirring device 126 stirred as a circulating device and kept homogeneous.

This configuration of the high-pressure cleaning device 101 with the two feed lines 120, 123 ensures good handling of the required cleaning dispersion 6, since the required cleaning dispersion 6 is divided into a cleaning concentrate 106 with a smaller proportion and in water with a larger proportion. The cleaning concentrate 106 is designed such that on the one hand sufficient water and washing fluid are added as carrier fluid so that the cleaning concentrate 106 can still be conveyed using fluid technology. On the other hand, the cleaning concentrate can, for example, be transported, stored and stored in canisters and made available to the high-pressure cleaning device 101. The cleaning concentrate 106 is mixed upstream or in front of the high pressure pump 4 and forms the ready-to-use area in front of the high pressure area

Cleaning dispersion 6 from. Since significantly more water is required for a wash cycle of vehicle F, this configuration is very efficient. The downstream part of the high-pressure cleaning device 101 is again identical to the first embodiment after the two supply lines 120 and 123 meet.

FIG. 5 is a schematic sectional view of an individual cleaning particle 212 of a cleaning dispersion 206 according to the invention in accordance with a further preferred embodiment. This cleaning particle 212 has an inorganic filler 240 such as a mineral, for example spar or barite, which, as two “cores” of the cleaning particle 212, is enclosed or encased by a polymer, in this embodiment polyurethane (PU) , With this symbiotic concept, on the one hand, the soft properties of the enveloping polyurethane can be combined for gentle cleaning and, on the other hand, the high density of the inorganic fillers 240 and an optimum of the different material properties can be achieved.

Figure 6 shows a microscopic or microscopic image of a

Cleaning dispersion 206 with cleaning particles 212. The cleaning particles 212 which are property-stable (water-insoluble) in the cleaning dispersion 206 with a

Grain structures have different longest dimensions, which are shown in FIG. 6. The cleaning particles 212 have a mass fraction of 1% or a fraction of 1% by weight of the cleaning dispersion 206 as an optimal balance between manageability and (in one use) effect per time.

Further embodiments of the high-pressure cleaning device or the cleaning dispersion are of course conceivable without leaving the scope of the claims. For example, the high-pressure cleaning device can also be designed as a brushless gantry washing system in which instead of the brushes High pressure jet nozzles are positioned along the vehicle and driven / moved. Here, as with the car wash, a driving speed can be set according to a degree of contamination of the vehicle to be cleaned. The more dirt has to be removed, the slower it will be

Driving speed of the gantry car wash. After cleaning, rinsing and / or conventional drying or a

Drain dryer can be used. This allows a simple derivation from

Existing units and the new units can be integrated into the existing platform. Alternatively, an inventive one

High-pressure cleaning device of an alternative embodiment can also be designed as a standing arch through which an object to be cleaned is moved or through which a vehicle passes. The space requirement is particularly small.

In addition to the immobile embodiments described above, a

High-pressure cleaning device can alternatively be designed in one embodiment as a portable, compact system, similar to a portable high-pressure cleaner. With a high-pressure lance, a user can direct the high-pressure jet onto the area to be cleaned and apply it there. Thus, the user is provided with a portable high-pressure cleaning device according to the invention, which he can also use at home, for example, in the courtyard (with a suitable catch basin for the sprayed cleaning dispersion if it is not biodegradable).

Of course, before cleaning with the high pressure jet nozzle and

cleaning dispersion according to the invention can also be preceded by a (conventional) pre-cleaning with a detergent or water. So one can

Further improve cleaning result. LIST OF REFERENCE NUMBERS

1 ; 101 High pressure cleaning device 2 (vehicle) surface

4 hole pressure pump

6; 206 cleaning dispersion

8 flat jet nozzle

9 distribution line

10 flap pressure jet

12; 212 cleaning particles

14; 1 14 carrier fluid

18 fine particles

20; 120 feed line

22 Booster pump

24 storage containers

26; 126 stirrer

28 intake manifold

30 frame structure

32 cleaning frame

34 arm

36 nozzle bar

38 hose

106 cleaning concentrate

122 dosing pump

123 Second supply line

124 concentrate containers

240 filler

A direction of travel

F vehicle

Claims

Expectations

1. High-pressure cleaning device (1; 101) for gentle cleaning of surfaces soiled with fine particles, in particular

Motor vehicle surfaces (2), with a high-pressure pump (4) for conveying a cleaning product to a high-pressure jet nozzle (8), on which the

Cleaning product in a high pressure jet (10), characterized in that the cleaning product is a cleaning dispersion (6) with a carrier fluid (14) and with solid cleaning particles (12; 212) with a density between 0.8 g / cm ³ and 3.5 g / cm ³ , in particular between 0.9 g / cm ³ and 2.2 g / cm ³ , and the

High pressure cleaning device (1; 101) is configured such that a

Cleaning particles (12; 212) exiting the high-pressure jet nozzle (8) have a kinetic energy of at least 1-10 ¹⁰ J and a maximum of 2 -10 ^ J, preferably of at least 2 -10 ⁹ J and a maximum of 7 -10 ⁵ J, and very particularly preferably has between at least 4 -10 ⁷ J and at most 9 -10 ⁶ J.

2. High-pressure cleaning device (1; 101) according to claim 1, characterized in that the cleaning particles (12; 212) have an average

Have a longitudinal extension of at least 20 pm and / or a maximum of 315 miti, in particular of at least 30 pm and / or a maximum of 200 pm.

3. High-pressure cleaning device (1; 101) according to one of claims 1 or 2, characterized in that the speed of the high-pressure jet (10) upon exit from the high-pressure jet nozzle (8) is at least 20 m / s and / or at most 80 m / s, in particular is at least 40 m / s and / or a maximum of 60 m / s.

4. High-pressure cleaning device (1) according to one of claims 1 to 3, characterized in that the high-pressure cleaning device (1) one

Has storage container (24) for storing the cleaning dispersion (6; 206), which comprises a circulating device for circulating the cleaning dispersion (6; 206) in order to keep the distribution of the cleaning particles (12; 212) homogeneous, the

Circulation device is designed in particular in the form of a circulation pump.

5. High-pressure cleaning device (1) according to one of the preceding claims, characterized in that the high-pressure cleaning device (1) upstream of the high-pressure pump (4) has a feed line (20) which contains the cleaning dispersion (6; 206), in particular water as the carrier fluid (14 ) before the high pressure area.

6. High-pressure cleaning device (101) according to one of claims 1 to 3, characterized in that the high-pressure cleaning device (101)

upstream of the high-pressure pump (4) has two feed lines, in which a first feed line (120) supplies a cleaning concentrate (106) with the cleaning particles (12; 212), which in particular has a washing fluid as a carrier fluid (14), and in which a second one Feed line (123) supplies a further fluid, in particular water, which together form the cleaning dispersion (6; 206) as a mixture, so that the

Cleaning concentrate (106) and the further fluid are mixed before the high pressure area.

7. High-pressure cleaning device (101) according to claim 6, characterized in that the high-pressure cleaning device (101) has a concentrate container (124) for storing the cleaning concentrate (106) and the cleaning concentrate (106) via the first feed line (120) by means of a

Metering device, in particular in the form of a metering pump (122), is supplied.

8. High-pressure cleaning device according to one of claims 1 to 3, characterized in that the high-pressure cleaning device before

High-pressure jet nozzle and downstream of the high-pressure pump (4) has at least one high-pressure injector in order to contain a cleaning concentrate (106)

Inject cleaning particles (12; 212) in the high pressure area.

9. Cleaning dispersion (6; 106; 206) for one

High-pressure cleaning device (1; 101) according to one of claims 1 to 8, with a carrier fluid (14; 114) and with solid dispersed in the carrier fluid (14; 114)

Cleaning particles (12; 212), in particular made of polymer, characterized in that that the, in particular property-stable, cleaning particles (12; 212) have a density between 0.8 g / cm ³ and 3.5 g / cm ³ .

10. cleaning dispersion (6; 106; 206) according to claim 9, characterized

characterized in that the cleaning particles (212) contain an inorganic filler (240) as the core, which is enclosed or encased by the polymer.

11. Cleaning dispersion (6; 106; 206) according to claim 9 or 10, characterized in that the cleaning particles (12; 212) have a grain structure and in particular are microporous and / or have a star-shaped shape.

12. Cleaning dispersion (6; 106; 206) according to one of claims 9 to 11, characterized in that the cleaning particles (12; 212) of

Cleaning dispersion (6; 206) a mass fraction between 0.1% and 5% of

Have cleaning dispersion (6; 206).

13. Arrangement of a floe pressure cleaning device (1; 101) for material-friendly cleaning with a high-pressure pump (4) for conveying a cleaning product to a high-pressure jet nozzle (8), on which the

Cleaning product emerges in a high pressure jet (10) and from a surface to be cleaned (2), characterized in that the cleaning product is a

Cleaning dispersion (6; 206) with a carrier fluid (14) and with solid

Cleaning particles (12; 212) with a density between 0.8 g / cm ³ and 3.5 g / cm ³ , in particular between 0.9 g / cm ³ and 2.2 g / cm ³ , and the

High pressure cleaning device (1; 101) is configured such that a

Cleaning particles (12; 212) when they strike the surface (2) have a kinetic energy of at least 1 - 10 ¹⁰ J and a maximum of 2 -10 ^ J, preferably of at least 2 -10 ⁹ J and a maximum of 7 -10 ⁵ J, and very particularly preferably has between at least 4 -10 ⁷ J and at most 9 -10 ⁶ J.

14. Arrangement according to claim 13, characterized in that a distance between the high-pressure cleaning device (1; 101) and the surface to be cleaned (2) is less than 1 meter.