High-pressure cleaning system and a method for operating a high-pressure cleaning system

Abstract

The invention relates to a high-pressure cleaning system which comprises a high-pressure cleaning device (12) having a high-pressure pump (16) for increasing the pressure of a cleaning liquid, as well as two or more discharge units (48, 52, 56, 60, 64, 70) which differ from one another, discharge said cleaning liquid, and can be brought selectively into fluidic connection with a pump outlet (22) of the high-pressure pump (16), said discharge units (48, 52, 56, 60, 64, 70) being connectible to an operating unit (26) of said high-pressure cleaning system (10), or an operating unit (26) being arranged on at least one discharge unit (48, 52, 56, 60, 64, 70), said high-pressure cleaning system (10) comprising an input unit (96) by means of which at least one conveyor parameter can be specified by a user, this at least one conveyor parameter being able to be set in accordance with the specification by means of a control unit (82, 98) of said high-pressure cleaning system (10), said control unit being coupled to the input unit (96), and said high-pressure cleaning system (10) comprising an output unit (100) which is coupled to the control unit (82, 98) and on which, depending on said user specification, an indication (116) can be provided comprising a recommendation (118, 120, 122) relating to at least one discharge unit (48, 52, 56, 60, 64, 70). The invention also relates to a method for operating a high-pressure cleaning system.

Description

[0001] The invention relates to a high-pressure cleaning system, comprising a high-pressure cleaning device with a high-pressure pump for increasing the pressure of a cleaning liquid and two or more different discharge units for discharging the cleaning liquid, which can be selectively brought into fluid connection with a pump outlet of the high-pressure pump, wherein the discharge units can be connected to an operating unit of the high-pressure cleaning system or an operating unit is arranged on at least one discharge unit.

[0002] The invention also relates to a method for operating a high-pressure cleaning system.

[0003] High-pressure cleaning systems with a high-pressure cleaning device and an operating unit as well as a discharge unit held thereon and which can be brought into fluid connection with a pump outlet of the high-pressure pump are described in DE 10 2006 009 855 A1, US 2013 / 0214059 A1 and in US 5,381,962.

[0004] US 2006 / 0108449 A1 describes a high-pressure cleaning device and a discharge unit on which a plurality of nozzles with different cross-sections can be optionally arranged.

[0005] DE 20 2013 101 730 U1 also describes that different nozzles can be optionally connected to a discharge unit. Different pump outlet pressures can be set on the high-pressure cleaning device.

[0006] High-pressure cleaning systems are known to provide a plurality of discharge units that can be selectively connected to the control unit and thus fluidically connected to the high-pressure pump. Discharge units are also known that feature a respective control unit, allowing a user to replace the control unit together with the discharge unit and fluidically connect the desired discharge unit to the high-pressure pump. Depending on the application, in particular the type and quality of the object to be cleaned and the type of cleaning (e.g., coarse cleaning, abrasive cleaning, foam cleaning, etc.), the user selects the appropriate discharge unit to achieve the best possible cleaning result.Accordingly, the two or more discharge units differ from one another in their discharge characteristics, for example a different output pressure of the cleaning fluid, a different jet shape, etc. It is desirable that the object to be cleaned is not damaged.

[0007] The object of the present invention is to provide a high-pressure cleaning system of the type mentioned above which can be handled in a simpler manner.

[0008] This object is achieved according to the invention in a generic high-pressure cleaning system in that the high-pressure cleaning system comprises an input unit via which at least one conveying parameter can be specified by a user, wherein the at least one conveying parameter is set according to the specification by a control unit of the high-pressure cleaning system coupled to the input unit, and wherein the high-pressure cleaning system comprises an output unit coupled to the control unit, at which an indication is provided depending on the user's specification, which indication comprises a recommendation for at least one discharge unit.

[0009] The high-pressure cleaning system according to the invention includes an input unit. The user can specify at least one delivery parameter. Depending on the user's specification, the high-pressure cleaning device is adjusted according to the user's specification, in particular by adjusting an operating point of its high-pressure pump. The user can, for example, specify the at least one delivery parameter depending on the type and / or nature of the object to be cleaned and, alternatively or additionally, depending on the desired cleaning process. The output unit can provide the user with a visual or acoustic indication, for example, as to which discharge unit should be used preferentially during a cleaning process. Taking into account the user's specification of the at least one delivery parameter, it is thus possible to recommend the use of a discharge unit to the user.The note can recommend more than one dispensing unit. For example, the note can state that a specific dispensing unit requires a minimum pressure as a delivery parameter to achieve good cleaning results. If, for example, a corresponding pressure or pressure range is specified by the user as a delivery parameter, the control unit can recommend the corresponding dispensing unit for use. If, for example, a volume flow of the cleaning fluid is specified as a delivery parameter, the note can recommend the use of a dispensing unit whose nozzle has a sufficiently large opening cross-section so that the specified volume flow can actually be dispensed.For example, when specifying the amount of a cleaning chemical to be added to the cleaning fluid, the note can be used to recommend a dispensing unit that is typically used to dispense a cleaning fluid-chemical mixture to achieve the best possible cleaning result. The note on the dispensing unit also serves to prevent potential damage to the object to be cleaned due to the use of an unsuitable dispensing unit for specifying at least one specified conveying parameter.

[0010] In an advantageous embodiment of the high-pressure cleaning system according to the invention, it is advantageous if the at least one predeterminable conveying parameter comprises the pressure of the cleaning fluid, a volume flow of the cleaning fluid, and / or a dosage of a cleaning chemical that can be mixed with the cleaning fluid. In particular, it can be provided that the user can specify the pressure, the volume flow, and the dosage independently of one another via the input unit. It is also conceivable that at least two of these parameters can be specified in conjunction with one another, for example, by a user specifying a cleaning profile via the input unit that includes the specification of at least two conveying parameters.

[0011] Advantageously, the at least one delivery parameter of the high-pressure cleaning device can be controlled and / or regulated depending on the user's specifications. For example, the pressure of the cleaning fluid is detected via a pressure sensor, the volume flow via a flow sensor, and / or the dosage of the cleaning chemical is detected via a concentration sensor, and a corresponding signal is provided to the control unit. Depending on the signal, the control unit can regulate the pressure, volume flow, and / or dosage according to the user's specifications.

[0012] It has already been mentioned that two or more discharge units can each have a control unit. The discharge unit can be fluidly connected to the pump outlet via the respective control unit.

[0013] Alternatively or additionally, two or more discharge units can be optionally connected to the control unit. For example, a control unit is provided that is fluidly connected to the pump outlet, to which one of the two or more discharge units can be optionally connected. Thus, more than one discharge unit can be used with just one control unit.

[0014] Alternatively or additionally, the high-pressure cleaning system can comprise a discharge device that can be connected to the operating unit or on which an operating unit is arranged and which has two or more discharge units, one of which can be selectively selected and brought into fluid communication with the pump outlet. The discharge device comprises more than one discharge unit. The desired discharge unit can be transferred from a non-use position to a use position. The desired discharge unit can thereby be brought into fluid communication with the pump outlet. Such a discharge device can be arranged on an operating unit or can optionally be connected, as mentioned above, to an operating unit of the high-pressure cleaning system.

[0015] The two or more discharge units may preferably comprise at least one of the following: a high-pressure flat jet nozzle; a high-pressure rotor nozzle, with which in particular a high-pressure point jet rotating on a conical surface can be emitted; a high-pressure point jet nozzle; a low-pressure cleaning agent nozzle, the nozzle opening cross-section of which is comparatively large in relation to those of the high-pressure flat jet nozzle, the high-pressure rotor nozzle and the high-pressure point jet nozzle; a foam nozzle, on which in particular a container for a foamable cleaning chemical is arranged; a washing brush; a surface cleaner, comprising a hood and a nozzle arrangement movably arranged in a receiving space delimited by the hood, which nozzle arrangement can be driven by pressurized cleaning liquid.

[0016] The at least one conveying parameter can advantageously be specified by at least one of the following: a value or a value range of the at least one conveying parameter; an operating level of the high-pressure cleaning device, wherein at least one conveying parameter has a different value or value range in different operating levels. For example, the user specifies an operating level that is linked to the setting of at least one conveying parameter. a selection of a cleaning profile, in particular with regard to an object to be cleaned, wherein at least one conveying parameter has a different value or value range in different cleaning profiles. For example, by specifying a cleaning profile, at least one conveying parameter associated with it is set.

[0017] It can be provided that a value, a value range, or an operating level can be selected directly via the input unit, or increased or decreased by incrementing or decrementing. For example, the operating level can be increased or decreased using the "+ / -" controls on the input unit. The value, the value range, and / or the operating level can also be preselected by a corresponding numeric input on the input unit.

[0018] It is advantageous if two or more operating levels and / or cleaning profiles are coded and can be displayed or represented on the input unit using different symbols, such as pictograms, that are selectable for the user. This allows for intuitive operation of the input unit. The operating level and / or cleaning profile can be specified by selecting the corresponding symbol. Linked to the operating level and / or cleaning profile, at least one conveying parameter can be specified.

[0019] It is advantageous if the high-pressure cleaning system comprises a memory unit coupled to or integrated into the control unit, in which memory unit an operating level and / or a cleaning profile are stored, selectable via the input unit, wherein a value or a value range of at least one conveying parameter is stored associated with the operating level or the cleaning profile. The value or value range of at least one conveying parameter in a respective operating level and / or in a respective cleaning profile can be stored in the memory unit. By selecting the operating level and / or the cleaning profile, the value of the at least one conveying parameter can be specified in a user-friendly manner.

[0020] In particular, the contents of the memory unit are modifiable. This allows a user to define an operating level and / or a cleaning profile and, linked to it, save the value or value range of at least one conveying parameter. This can then be specified in a user-friendly manner by selecting the corresponding operating level and / or cleaning profile.

[0021] It is advantageous if a preferably wireless data connection to a remotely located data processing device can be established via the control unit, and if data relating to an operating level and / or a cleaning profile can be transmitted from the data processing device to the control unit and stored in the memory unit for selection by the user. Definitions of an operating level and / or a cleaning profile, as well as the value or value range of at least one conveying parameter linked to it, can thus be added to the high-pressure cleaning system in a particularly user-friendly manner. For example, the user can use the input unit to initiate the establishment of a data connection between the control unit and the data processing device.The data processing device, for example, owned or managed by a manufacturer of the high-pressure cleaning system, may know predefined operating levels and / or cleaning profiles. The corresponding data, which is used to set the value of at least one conveying parameter, can be transmitted (in particular, "downloaded") from the data processing device, for example, to the control unit and stored in the storage unit. This data can, for example, also comprise the aforementioned symbols, in particular pictograms, which can be used to select the operating level and / or cleaning profile.

[0022] The output unit is preferably a visual output unit or comprises one, and the information, in particular the recommendation, is preferably displayed on the output unit. The visual output unit allows for simple and user-friendly provision of the information. For example, the recommended dispensing unit is displayed on the output unit via text, a symbol, or a pictogram.

[0023] Advantageously, the user's specification for the at least one conveying parameter is displayed on the output unit. The user thus receives feedback on the output unit, for example, indicating which value or value ranges of the at least one conveying parameter, which operating level, and / or which cleaning profile they have specified.

[0024] The input unit may, for example, comprise at least one switch, push button, rotary knob, key or other type of operating element.

[0025] In an advantageous embodiment of the cleaning system according to the invention, the input unit comprises at least one touchscreen for specifying the at least one conveying parameter. For example, an operating level and / or a cleaning profile is displayed on the screen in coded form using a symbol or pictogram. By operating the touchscreen, the value or value ranges of at least one conveying parameter linked to the operating level and / or the cleaning profile are specified.

[0026] The input unit and the output unit preferably form an integrated input / output unit, which preferably includes a touch-sensitive screen for receiving the input and outputting the message. "Integrated" in this case can mean, in particular, that the integrated units are arranged in a common housing. For example, a sealed and specifically waterproof integrated unit is provided.

[0027] It proves to be advantageous if the control unit forms, at least partially, an integrated unit with the input unit and / or with the output unit. For example, an integrated control / input / output unit is provided which is arranged in a closed, watertight housing. The control unit can form, at least partially, an integrated unit with the input unit and / or the output unit. This is advantageous, for example, if this integrated unit is arranged on an operating unit or an external additional device. A further part of the control unit can, especially in these two cases, be arranged in the high-pressure cleaning device and control its high-pressure pump in order to set the at least one delivery parameter.

[0028] It is advantageous if the input unit and / or the output unit and / or the control unit are arranged, at least partially, on the control unit or encompassed by it. This makes it easier for the user to operate the system by allowing inputs to be made and / or outputs to be received at the control unit.

[0029] Alternatively or additionally, it can be provided that the input unit and / or the output unit and / or the control unit are arranged, at least partially, on the high-pressure cleaning device or are included thereby.

[0030] Alternatively or additionally, it can be provided that the input unit and / or the output unit and / or the control unit are arranged, at least partially, on or encompassed by a preferably portable additional device, in particular a portable computer or a smartphone. This allows for particularly user-friendly operation of the high-pressure cleaning system. The preferably portable additional device offers, for example, the possibility of establishing a data connection with the external data processing device, as explained above, and transmitting data relating to an operating mode and / or a cleaning profile for storage in the storage unit.

[0031] In accordance with the above embodiments, the high-pressure cleaning system may comprise more than one input unit and / or more than one output unit. The control unit may be arranged, at least partially, in the operating unit, in the high-pressure cleaning device, and / or in the additional device, or may be included thereby.

[0032] It is advantageous if data can be transmitted wirelessly from the control unit and / or the auxiliary device to the high-pressure cleaner and / or vice versa. For example, a radio connection is used to transmit the user's input on the control unit and / or the auxiliary device to a control unit or part of it in the high-pressure cleaner.

[0033] It proves to be advantageous if the high-pressure cleaning system comprises a detection unit coupled to the control unit, with which the discharge unit connected to the operating unit or the discharge unit arranged on the operating unit can be determined.

[0034] The detection unit is, for example, arranged on the control unit or enclosed by it.

[0035] The detection of the at least one discharge unit can be carried out, for example, by at least one of the following: mechanical, electrical, contact-based, wireless, or via radio connection (e.g. RFID).

[0036] The detection unit makes it possible to determine whether a dispensing unit may be provided that deviates from the recommended dispensing unit. If the dispensing unit deviates from a dispensing unit according to the recommendation, the control unit can preferably provide a corresponding indication, for example, a visual or acoustic indication, at the dispensing unit. This can alert the user to check the dispensing unit selection.

[0037] As mentioned at the beginning, the invention also relates to a method.

[0038] The object of the present invention is to provide a method for operating a high-pressure cleaning system of the type mentioned above.

[0039] This object is achieved according to the invention by a method for operating a high-pressure cleaning system, which comprises a high-pressure cleaning device with a high-pressure pump for increasing the pressure of a cleaning liquid and two or more different discharge units for discharging the cleaning liquid, which can be selectively brought into fluid connection with a pump outlet of the high-pressure pump, wherein the discharge units can be connected to an operating unit of the high-pressure cleaning system or an operating unit is arranged on at least one discharge unit, wherein the high-pressure cleaning system comprises an input unit via which at least one conveying parameter is specified by a user, wherein the at least one conveying parameter is set by a control unit of the high-pressure cleaning system coupled to the input unit in accordance with the specification,and wherein the high-pressure cleaning system comprises an output unit coupled to the control unit, at which an indication is provided depending on the user's specification, which includes a recommendation of at least one discharge unit.,

[0040] The advantages already mentioned above in connection with the explanation of the high-pressure cleaning system according to the invention can be achieved using the method. To avoid repetition, reference is therefore made to the above explanations.

[0041] Advantageous embodiments of the method according to the invention result from advantageous embodiments of the high-pressure cleaning system according to the invention and its use. The features of the advantageous embodiments can be used to define advantageous embodiments of the method.

[0042] The following description of preferred embodiments of the invention, taken in conjunction with the drawings, serves to explain the invention in more detail. They show: Figure 1: a preferred embodiment of a high-pressure cleaning system according to the invention, partially schematic, comprising a high-pressure cleaning device, an operating unit, a plurality of discharge units and a portable additional device; Figure 2: a further discharge unit of the high-pressure cleaning system from Figure 1 ; Figure 3: a view of the discharge unit from Figure 2 from below; Figure 4: Symbols indicating different operating modes of the high-pressure cleaning device Figure 1 symbolize, wherein at least one conveying parameter of the high-pressure cleaning device assumes a different value or a different value range in the different operating stages (1, 2 or 3); Figure 5: a plan view of a combined input / output unit of the high-pressure cleaning system from Figure 1 , where the delivery parameter "pressure" assumes operating level 3; Figure 6: a representation corresponding Figure 5 , where the delivery parameter "pressure" assumes operating level 2; Figure 7: a representation corresponding Figure 5 , where the delivery parameter "pressure" assumes operating level 1; Figure 8: a schematic block diagram to explain the structure and operation of the high-pressure cleaning device from Figure 1 and Figure 9: a plan view of a combined input / output unit which, for example, is used in the high-pressure cleaning system of Figure 1 can be used.

[0043] Figure 1shows an advantageous embodiment of a high-pressure cleaning system according to the invention, designated by reference numeral 10. The high-pressure cleaning system comprises a high-pressure cleaning device 12, which includes a motor pump unit 14. The motor pump unit 14 has a high-pressure pump 16 and a drive motor 18 for the same. A cleaning fluid to be pressurized, in particular water, can be supplied to the high-pressure pump 16 via a pump inlet 20. The pressurized cleaning fluid can be discharged at a pump outlet 22 of the high-pressure pump 16.

[0044] A container 24 containing a cleaning chemical is arranged on the high-pressure cleaning device 12. A mixing device 25 ( Figure 8) A cleaning chemical can be added to the cleaning fluid to increase its cleaning performance. The mixing device 25 is controllable so that the dosage of the cleaning chemical can be adjusted.

[0045] The high-pressure cleaning system 10 comprises an operating unit 26 in the form of a high-pressure gun 28. The gun 28 can be connected to the pump outlet 22 via a high-pressure line 30. When actuated, an operating element in the form of a trigger 32 opens a valve located in the gun 28. Pressurized cleaning fluid can thus be dispensed from the gun 28.

[0046] The high-pressure cleaning system 10 further comprises a discharge device 34, which can be detachably connected to the operating unit 26. The discharge device 34 comprises three discharge units arranged in a common housing 36. The housing 36 is rotatable, for example, about a longitudinal axis 38 of the discharge device 34. This makes it possible to selectively bring one of the three discharge units of the discharge device 34 into fluid communication with the pump outlet 22. When the corresponding discharge unit assumes a use position, a fluid line enclosed by it is aligned with a fluid line of the gun 28 to which the discharge device 34 is connected. By rotating the housing 36 about the longitudinal axis 38, one of the three discharge units can be brought into fluid communication with the pump outlet 22 via the gun 28, as desired by the user.

[0047] Which discharge unit is in the use position and which two other discharge units are in the non-use position can be identified by the user, for example, by a marking 40 on the housing 36. The marking 40 includes an individual symbol assigned to each discharge unit, which can be easily identified by the user.

[0048] In particular, the discharge device 34 comprises a high-pressure flat jet nozzle 42 for discharging a fan-shaped cleaning jet. The discharge device 34 also comprises a high-pressure rotor nozzle 44, with which a high-pressure point jet rotating on a conical surface can be discharged. Furthermore, the discharge device 34 comprises a low-pressure cleaning agent nozzle 46. The nozzle opening cross-section of the cleaning agent nozzle 46 is significantly larger than the respective nozzle opening cross-sections of the flat jet nozzle 42 and the rotor nozzle 44. A cleaning jet with a high volume flow can be discharged from the cleaning agent nozzle 46 at a lower pressure than with the other two nozzles 42, 44.

[0049] The high-pressure cleaning system 10 comprises several additional discharge units that can optionally be connected to the gun 28 instead of the discharge device 34. The discharge units can thus each be brought into fluid communication with the pump outlet 22 via the gun 28. A discharge unit 48 is provided, which comprises a high-pressure flat jet nozzle 50.

[0050] Furthermore, a discharge unit 52 is provided, which comprises a high-pressure rotor nozzle 54.

[0051] Furthermore, discharge units 56 and 60 are provided, which comprise washing brushes 58 and 62, respectively, wherein the washing brushes 58, 62 differ from one another in terms of their shape and function.

[0052] A discharge unit 64 is also provided. The discharge unit 64 includes a foam nozzle 66. Cleaning fluid, to which a foam-forming cleaning chemical can be added via a container 68 of the discharge unit 64, can be foamed via the foam nozzle 66.

[0053] The Figures 2 and 3 show a further discharge unit 70 in the form of a surface cleaner 72, which can also be selectively connected to the gun 28 and brought into fluid communication with the pump outlet 22. The surface cleaner 72 comprises a hood 74 at the working end, which defines a receiving space 76. A nozzle arrangement 78 is provided in the receiving space 76, which is mounted on the hood 74 so as to rotate about an axis 80. Under the action of the cleaning fluid, the nozzle arrangement 78 is set in rotation and acts upon a surface to be cleaned.

[0054] Depending on the type and nature of the object to be cleaned and / or the type of cleaning (e.g. coarse cleaning, abrasive cleaning, foam cleaning, brush cleaning, etc.), the user can connect the discharge device 34 with its corresponding discharge unit or one of the further discharge units 48, 52, 56, 60, 64 or 70 to the gun 28 and apply the cleaning fluid, optionally with added cleaning chemical and / or foamed, to the object to be cleaned.

[0055] It is desirable that, depending on the type and condition of the object and the type of cleaning, the best possible cleaning result is achieved and that damage to the object is avoided as far as possible.

[0056] The different discharge units of the cleaning system 10 have different discharge characteristics to achieve different cleaning results. However, it can be provided that the high-pressure flat jet nozzles 42 and 50, on the one hand, and the high-pressure rotor nozzles 44 and 54, on the other, have identical discharge characteristics.

[0057] As is particularly evident from Figure 8 As can be seen, the high-pressure cleaning system 10 has a control unit 82 in the high-pressure cleaning device 12. The control unit 82 allows the high-pressure pump 16 to be controlled in order to adjust the pressure of the cleaning fluid supplied by it. Alternatively or additionally, the volume flow of the cleaning fluid can be adjusted.

[0058] A pressure sensor 84 and a flow sensor 86 transmit a pressure signal and a volume flow signal, respectively, to the control unit 82. Taking this respective signal into account, the control unit 82 can control and, in particular, regulate the pressure and the volume flow depending on a respective value or value range specified by the control unit 82.

[0059] The control unit 82 is also coupled to the mixing device 25 to adjust the dosage of the cleaning chemical from the container 24. The signal from a concentration sensor 88, which can be used to determine the dosage of the cleaning chemical in the cleaning liquid, can be fed to the control unit 82. This allows the dosage of the cleaning chemical to be controlled and, in particular, regulated depending on a value or value range supplied to the control unit 82.

[0060] The pressure, the flow rate and the dosage of the cleaning chemical are delivery parameters of the high-pressure cleaning device 12. At least one delivery parameter can be specified by a user in the high-pressure cleaning device 12. This is explained below with particular reference to the Figures 4 to 8 This is explained using the delivery parameter "Cleaning fluid pressure" as an example. However, the following explanations apply accordingly to the delivery parameter "Volume flow" and the delivery parameter "Dosage of cleaning chemical."

[0061] Furthermore, the following explanation of the invention is based on the exemplary discharge device 34 with the three different discharge units, which can be selectively transferred into a use position. However, the following explanations also apply accordingly to the other discharge units 48, 52, 56, 60, 64, and 70 of the high-pressure cleaning system 10.

[0062] The exemplary restriction of the explanation of the invention to the pressure of the cleaning liquid and the use of the discharge device 34 is not limiting for the present invention.

[0063] Figure 4 shows three symbols 90, 92, and 94 as examples, such as those that could be depicted in an operating manual for the high-pressure cleaning system 10 to facilitate its operation for the user. It is also conceivable that the symbols 90, 92, and 94 could be depicted on the high-pressure cleaning device 12 and / or the control unit 26.

[0064] The symbol 90 symbolizes operating level "1" of the high-pressure cleaning device 12. It is clear to the user that operating level "1" is primarily used to clean relatively "soft" (e.g., delicate) objects. For example, the symbol 90 includes the pictogram of a garden fence.

[0065] Symbol 92 represents operating level "2" of the high-pressure cleaning device 12. It is clear to the user that operating level "2" is primarily intended for cleaning relatively "medium-hard" (e.g., normally resistant) objects. As an example, symbol 92 includes the pictogram of a motor vehicle.

[0066] Symbol 94 represents operating level "3" of the high-pressure cleaning device 12. It is clear to the user that operating level "3" is primarily used to clean relatively "hard" (e.g., very resistant) objects. As an example, symbol 94 includes the pictogram of masonry.

[0067] The high-pressure cleaning device 12 can be operated in three different operating modes: "1, 2, 3." The respective pressure of the cleaning fluid provided by the high-pressure pump 16 differs between the operating modes. In particular, each operating mode has a value range for the delivery parameter "pressure" that differs from the value range of the other operating modes. In operating mode "1," the pressure of the cleaning fluid is at its lowest, in operating mode "2," the pressure is higher, and in operating mode "3," the pressure is at its highest.

[0068] Beyond operating levels "1, 2, and 3," intermediate levels are provided, namely operating levels "1.5" and "2.5." In operating level "1.5," the value range of the "pressure" delivery parameter is higher than in operating level "1," but lower than in operating level "2." Similarly, the value range of the "pressure" delivery parameter is higher in operating level "2.5" than in operating level "2," but lower than in operating level "3."

[0069] The high-pressure cleaning system 10 comprises an input unit 96, a control unit 98 coupled thereto, and an output unit 100 coupled to the control unit 98. In the present case, the input unit 96, the control unit 98, and the output unit 100 are integrated as an integrated unit 102. The unit 102 is accommodated, for example, in a closed and, in particular, waterproof housing 104. In the present case, the integrated unit 102 is arranged on the gun 28, for example, near the trigger 32. The output unit 100 can thus be easily grasped by the user, and the input unit 96 can be easily operated.

[0070] It is also conceivable to arrange an input unit and an output unit 100 on the high-pressure cleaning device 12, which has already been explained above.

[0071] The control unit 98 can communicate with the control unit 82 in the high-pressure cleaning device 12. In particular, wireless communication is possible, for example, via radio. For this purpose, the control unit 98 and the control unit 82 have radio elements 112 and 114, respectively.

[0072] The control unit 98 and the control unit 82 can in particular be regarded as parts of a common control unit of the high-pressure cleaning system 10, which are spatially separated from one another in the unit 102 on the one hand and in the high-pressure cleaning device 12 on the other hand.

[0073] A memory unit 106 is integrated into the control unit 98.

[0074] In the present case, the input unit 96 has operating elements in the form of buttons 108, 110. Button 108 is marked with the symbol "-", button 110 with the symbol "+".

[0075] In this case, the output unit 100 is an optical output unit for visually displaying information relating to the status of the high-pressure cleaning system 10, in particular the operating mode it is in. Furthermore, the output unit 100 includes a note with a recommendation as to which of the discharge units of the discharge device 34 should be used depending on an operating mode specified by the user at the input unit 96. This is explained below.

[0076] The user can use buttons 108 and 110 to specify the operating levels "1 / 1.5 / 2 / 2.5 / 3" of the high-pressure cleaning device 12 incrementally (button 110) or decrementally (button 108). For example, the user can follow the instructions provided by symbols 90, 92, and 94. The user's setting is transmitted to the control unit 98. The pressure value range assigned to the respective specified operating level is read from the memory unit 106, and a corresponding signal is transmitted wirelessly to the control unit 82. The control unit 82 can control the high-pressure pump 16. As mentioned, the pressure of the cleaning fluid can be regulated.

[0077] It is also conceivable that the operating level specified by the user is transmitted to the control unit 82 and that a pressure value range assigned to the operating level is read from a memory unit of the control unit 82 and forms the basis for the pressure control.

[0078] The control unit 82 can, via the output unit 100, visually display the specification of the selected delivery parameter "pressure", symbolized by the operating level. For example, in Figure 5 the operating level "3" (hard) is displayed, which the user has specified.

[0079] In addition, a note is provided on the output unit 100, which includes the recommendation of at least one discharge unit, wherein the note depends on the specification of the conveying parameter "pressure" by the user.

[0080] Using the example of Figure 5 It is shown that when operating level "3" is selected, a notice 116 is provided. The notice 116 includes a first recommendation, which has a symbol 118. A second recommendation, which has a symbol 120, is also provided.

[0081] Symbol 118 represents a high-pressure flat jet nozzle. This recommends that the user use a discharge unit with a high-pressure flat jet nozzle when operating at operating level "3."

[0082] Symbol 120 represents a high-pressure rotor nozzle. This indicates to the user that an alternative discharge unit with a high-pressure rotor nozzle could be used at operating level "3."

[0083] In the presently assumed use of the application device 34, the user can use its discharge unit with high-pressure flat jet nozzle 42 or its discharge unit with high-pressure rotor nozzle 44 to comply with note 116. The user can verify the correct selection of the discharge unit via the marking 40.

[0084] Instead of the discharge units with the nozzles 42 and 44, the discharge units 48 with the nozzle 50 or 52 with the nozzle 54 could alternatively be connected to the gun 28.

[0085] Note 116 is intended to recommend to the user the most suitable discharge unit for the selected operating level so that, on the one hand, the best possible cleaning result can be achieved and, on the other hand, damage to the object to be cleaned is avoided as far as possible.

[0086] This will be further explained below with reference to Figure 6 The example of the Figure 6The user has selected operating level "2" via input unit 96, which is linked to a lower value range of the "Pressure" delivery parameter. In this case, note 116 merely comprises a recommendation, namely by displaying symbol 118, which refers to a high-pressure flat jet nozzle 42. This symbolizes to the user that the discharge unit should be used with the high-pressure flat jet nozzle 42 of the discharge device 34. Alternatively, discharge unit 48 with the high-pressure flat jet nozzle 50 could also be used.

[0087] In this case, symbol 120 is omitted, and thus a recommendation to use a high-pressure rotor nozzle 44 is omitted, for example, because the high-pressure rotor nozzle requires a cleaning fluid pressure that exceeds the pressure in operating mode "2" to achieve optimal cleaning performance. The recommendation regarding symbol 120 may also be omitted, for example, because, in the underlying application—cleaning a "medium-soft" object—there is a risk of damage to the object when using a high-pressure rotor nozzle.

[0088] The invention is further clarified with reference to Figure 7, in which the use of operating level "1" is symbolized according to the user's specification on the input unit 96. Depending on the specification, note 116 again includes the recommendation to use a high-pressure flat jet nozzle via symbol 118. Furthermore, note 116 includes the recommendation to use a low-pressure cleaning nozzle via a corresponding symbol 122.

[0089] Accordingly, the user is shown a symbol indicating that, in operating mode "1," the discharge units with the high-pressure flat jet nozzle 42 or the low-pressure cleaning agent nozzle 46 of the discharge device 34 could be used. Alternatively, the discharge unit 48 with the high-pressure flat jet nozzle 50 could be used.

[0090] In operating mode "1", a cleaning chemical can be added via the mixing device 25.

[0091] The high-pressure cleaning system 10 according to the invention is characterized by particularly user-friendly operation. Firstly, it is possible to specify at least one conveying parameter via the input unit 96. According to the user's specification, the high-pressure cleaning device 12 sets the desired conveying parameter as specified. Secondly, the user receives feedback via the output unit 100, which includes the instruction 116 and, with it, a recommendation for using the most suitable discharge unit. The cleaning result can thus be optimized and the risk of damage to the object to be cleaned reduced.

[0092] Figure 9124 schematically illustrates a top view of an integrated unit 124 that could be used in the high-pressure cleaning system 10 instead of the integrated unit 102. The integrated unit 124 includes an integrated input / output unit 126, which is embodied here as a touchscreen 128. Furthermore, the control unit 98 (not shown) is integrated into the unit 124.

[0093] A plurality of symbols 130, particularly pictograms, are displayed on the touchscreen 128. Each symbol 130 is linked to a cleaning profile, which is stored, for example, in the memory unit 106 or in the memory unit of the control unit 82. Each cleaning profile is linked to a value range, particularly of the "pressure" delivery parameter. Furthermore, with reference to the previous explanations, a link to another delivery parameter, such as the volume flow and / or the dosage of the cleaning chemical, can also exist.

[0094] The user can specify at least one pumping parameter by selecting the corresponding symbol 130 on the touchscreen 128. The state of the high-pressure cleaning device 12 is set under the control of the control unit 82. Depending on the user's specification, the message 116 is displayed on the touchscreen 128.

[0095] In the example of Figure 9The user has selected symbol 130 "Masonry," which is visually highlighted. The cleaning profile for "Masonry" is associated with a comparatively high pressure of the cleaning fluid, for example, similar to operating level "3" in the previous example. Accordingly, note 116 in the example according to Figure 9 the recommendation with symbol 118 for the use of a discharge unit with a high-pressure flat jet nozzle and the recommendation with symbol 120 for the use of a discharge unit with a high-pressure rotor nozzle.

[0096] In Figure 1An additional device 132 is also shown as a component of the high-pressure cleaning system. The additional device, preferably portable, is, for example, a portable computer or a smartphone 134. The smartphone 134 can be used alternatively or in addition to the integrated unit 102 or 124. The touchscreen 138 can be used as the integrated input / output unit 136. An internal data processing device of the smartphone 134 can be used instead of the control unit 98.

[0097] When using the smartphone 134 to specify at least one conveying parameter, an input and output is used on the touchscreen 138, for example, as described above using the example of Figure 9 and the touchscreen 128 was explained.

[0098] In an advantageous embodiment, a wireless data connection can be established from the control unit 98 and / or the internal control unit of the smartphone 134 via a communications network 140 (e.g., the Internet) to a remotely located data processing device 142. For this purpose, the device has, for example, a radio element 144 for communication with the radio element 112 or a radio element of the smartphone 134.

[0099] The data processing device 142 is, for example, owned or managed by a manufacturer of the high-pressure cleaning system 10 and is coupled to a database 146. For example, cleaning profiles can be stored in the database 146. In the present case, this is understood in particular to mean that the corresponding cleaning profile includes a specification of a value or value range of at least one conveying parameter. Data comprising the definition of a cleaning profile can be transmitted via the communication network 140 to the control unit 98 or to the smartphone 134 and stored in the storage unit 106 or in the memory of the smartphone 134. The cleaning profile can be "downloaded" accordingly. For example, the cleaning profile also includes a symbol 130 for display on the touchscreen 128 or 138.

[0100] As already explained above, the user can specify at least one conveying parameter of the high-pressure cleaning device 12 by selecting the corresponding symbol 130.

[0101] The high-pressure cleaning system 10 may further include a detection unit 148. The detection unit 148 is arranged, for example, on the gun 28 and coupled to the control unit 98 or the data processing device of the smartphone 134.

[0102] The detection unit 148 can detect which dispensing unit is connected to the gun 28 or which of the dispensing units of the dispensing device 34 is in the use position. Figure 8 shows schematically a discharge unit 150.

[0103] If the detected dispensing unit differs from the dispensing unit according to note 116, a corresponding note can be provided to the user. For example, a note is displayed on the dispensing unit 100.

[0104] The detection unit 148 can detect the discharge unit using contact or contactless means, for example, mechanically, electrically, or in other ways. For example, contactless detection is achieved using RFID technology.

Claims

1. High-pressure cleaning system, comprising a high-pressure cleaning apparatus (12) having a high-pressure pump (16) for increasing the pressure of a cleaning liquid, and comprising two or more discharge units (48, 52, 56, 60, 64, 70), for discharging the cleaning liquid, which are different from each other and which can be selectively brought into fluid communication with a pump outlet (22) of the high-pressure pump (16), wherein the discharge units (48, 52, 56, 60, 64, 70) are connectable to an operating unit (26) of the high-pressure cleaning system (10) or wherein an operating unit (26) is arranged on at least one discharge unit (48, 52, 56, 60, 64, 70), wherein the high-pressure cleaning system (10) comprises an input unit (96) via which at least one output parameter is predeterminable by a user, wherein the at least one output parameter is adjusted, in accordance with the predetermination, by way of a control unit (82, 98), coupled to the input unit (96), of the high-pressure cleaning system (10), and wherein the high-pressure cleaning system (10) comprises an output unit (100) coupled to the control unit (82, 98), characterized in that on the output unit (100) an indication (116) is provided depending on the predetermination made by the user, said indication (116) comprising a recommendation (118, 120, 122) of at least one discharge unit (48, 52, 56, 60, 64, 70).

2. High-pressure cleaning system in accordance with claim 1, characterized in that the at least one output parameter predeterminable by the user via the input unit (96) comprises at least one of the following: - the pressure of the cleaning liquid; - a volumetric flow rate of the cleaning liquid; - a dosage of a cleaning chemical admixable to the cleaning liquid.

3. High-pressure cleaning system in accordance with claim 1 or 2, characterized in that the at least one output parameter is controllable by the high-pressure cleaning apparatus (12) depending on the predetermination made by the user.

4. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that at least one of the following applies: - two or more discharge units (48, 52, 56, 60, 64, 70) are selectively connectable to the operating unit (26) - the high-pressure cleaning system (10) comprises a discharge device (34) which is connectable to the operating unit (26) or on which is arranged an operating unit (26) and which comprises two or more discharge units, one of which can be selectively selected and brought into fluid communication with the pump outlet (22).

5. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the two or more discharge units (48, 52, 56, 60, 64, 70) comprise at least one of the following: - a high-pressure flat jet nozzle (42, 50); - a high-pressure rotary nozzle (44, 54); - a high-pressure pinpoint jet nozzle; - a low-pressure cleaning agent nozzle (46); - a foam nozzle (66); - a wash brush (58, 62); - a surface cleaner (72), comprising a hood (74) and a nozzle assembly (78) movably arranged in a receiving space (76) bounded by the hood (74), said nozzle assembly (78) being drivable by pressurized cleaning liquid.

6. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the at least one output parameter is predeterminable by the user via the input unit (96) by at least one of the following: - a value or range of values of the at least one output parameter; - an operating level of the high-pressure cleaning apparatus (12), at least one output parameter having a different value or range of values in different operating levels; - a choice of a cleaning profile, in particular with regard to an object to be cleaned, at least one output parameter having a different value or range of values in different cleaning profiles.

7. High-pressure cleaning system in accordance with claim 6, characterized in that two or more operating levels and / or cleaning profiles are selectably presented or selectably presentable to the user on the input unit (96, 126, 136) in a manner coded by symbols (130) that differ from one other.

8. High-pressure cleaning system in accordance with claim 6 or 7, characterized in that the high-pressure cleaning system (10) comprises a storage unit (106) coupled to or integrated in the control unit (82, 98) in which an operating level and / or a cleaning profile is stored in a manner in which they are selectable via the input unit (96, 126, 136), wherein a value or range of values of at least one output parameter associated with the operating level or the cleaning profile is stored.

9. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the output unit (100, 126, 136) is or comprises a visual output unit (100, 126, 136) and in that at least one of the following is presented on the output unit (100, 126, 136): - the indication (116), in particular the recommendation; - the user's predetermination of the at least one output parameter.

10. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the input unit (96, 126, 136) comprises at least one switch, button (108, 110), rotary knob and / or touch-sensitive screen for predetermining the at least one output parameter.

11. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the input unit (96, 126, 136) and the output unit (100, 126, 136) form an integrated input / output unit (102, 124), in particular in that this comprises a touch-sensitive screen (128) for receiving the predetermination and outputting the indication (116).

12. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the control unit (98) forms, at least in part, an integrated unit (102, 124) with the input unit (96, 126, 136) and / or with the output unit (100, 126, 136).

13. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the input unit (96, 126) and / or the output unit (100, 126) and / or the control unit (98) are, at least in part, arranged on or comprised by the operating unit (26).

14. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the input unit and / or the output unit and / or the control unit are, at least in part, arranged on or comprised by the high-pressure cleaning apparatus (12).

15. High-pressure cleaning system in accordance with any one of the preceding claims, characterized in that the input unit (136) and / or the output unit (136) and / or the control unit are, at least in part, arranged on or comprised by a preferably portable accessory device (132), in particular a portable computer or a smartphone (134).

16. High-pressure cleaning system in accordance with claim 13 or 15, characterized in that data are wirelessly transmittable from the operating unit (26) and / or from the accessory device (132) to the high-pressure cleaning apparatus (12) and / or vice versa.

17. Method for operating a high-pressure cleaning system comprising a high-pressure cleaning apparatus (12) having a high-pressure pump (16) for increasing the pressure of a cleaning liquid, and comprising two or more discharge units (48, 52, 56, 60, 64, 70), for discharging the cleaning liquid, which are different from each other and which can be selectively brought into fluid communication with a pump outlet (22) of the high-pressure pump (16), wherein the discharge units (48, 52, 56, 60, 64, 70) are connectable to an operating unit (26) of the high-pressure cleaning system (10) or wherein an operating unit (26) is arranged on at least one discharge unit (48, 52, 56, 60, 64, 70), wherein the high-pressure cleaning system (10) comprises an input unit (96) via which at least one output parameter is predetermined by a user, wherein the at least one output parameter is adjusted, in accordance with the predetermination, by a control unit (82, 98), coupled to the input unit (96), of the high-pressure cleaning system (10), and wherein the high-pressure cleaning system (10) comprises an output unit (100) coupled to the control unit (82, 98), characterized in that on the output unit (100) an indication (116) depending on the predetermination made by the user is provided, said indication (116) comprising a recommendation (118, 120, 122) of at least one discharge unit (48, 52, 56, 60, 64, 70).

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