Cleaning device

Abstract

Cleaning device (10) for cleaning a cleaning surface, wherein the cleaning device (10) comprises a blower (10G), a container (10F) and a user interface (10U), and wherein the cleaning device (10) is designed to perform the following steps: Suction of material from the cleaning surface into the container (10F) using the blower (10G), Automatic determination of an actual value of a performance parameter of the cleaning device (10), in particular the volume flow rate (V) or a corresponding parameter, Automatic comparison of the actual value with an electronically stored reference value, and Output a message about the actual value and the reference value via the user interface (10U).

Description

[0001] The present invention relates to a cleaning device and a method for operating a cleaning device.

[0002] Cleaning devices for cleaning surfaces, such as hand-held vacuum cleaners, are known in the prior art in a variety of different designs.

[0003] Such cleaning devices are usually equipped with a user interface, for example an operating element and a screen, via which the power level of the cleaning device can be selected and displayed.

[0004] The present invention is based on the object of providing a cleaning device that is improved compared to the prior art and an improved method for operating a cleaning device, wherein a particularly simple, user-friendly and / or intuitive operation and / or an improved or more effective cleaning is enabled or supported.

[0005] The object underlying the present invention is achieved by the cleaning device according to claim 1 or a proposed method. Advantageous further developments are the subject of the dependent claims.

[0006] The present invention relates to a cleaning device and, in particular, a computer-implemented method for operating a cleaning device. Preferably, the proposed method, in particular individual or all method steps of the proposed method, is / are carried out (semi-)automatically or automatically by means of the cleaning device, or the cleaning device is configured for this purpose, in particular by means of appropriate means for data processing and controlling the cleaning device, such as a data processing device and / or a control device.

[0007] A cleaning device within the meaning of the present invention is preferably a handheld device or a device manually operated by a user for cleaning and / or maintaining surfaces, in particular floors. A cleaning device within the meaning of the present invention is particularly preferably a handheld vacuum cleaner, a handheld wet mop, or a handheld vacuum-mop device.

[0008] However, a cleaning device within the meaning of the present invention can also be any other device for cleaning and / or maintaining surfaces, particularly floors. For example, lawn mowers, polishing machines, and / or sanding machines are also generally considered cleaning devices within the meaning of the present invention.

[0009] Handheld cleaning devices are typically equipped with a handle or grip that allows the user to guide the cleaning device across the area to be cleaned or treated. In contrast to handheld cleaning devices, autonomous or self-propelled cleaning devices, such as robot vacuum cleaners, robot mops, or robot vacuum-mop cleaners, typically have a navigation system to navigate autonomously or independently within an environment.

[0010] In the proposed method for operating a particularly hand-held cleaning device, suction material or air and / or a liquid cleaning agent together with suction material is sucked from a cleaning surface into a container of the cleaning device by means of a fan of the cleaning device.

[0011] The proposed method is characterized in that, during cleaning, a current value or actual value of a performance variable of the cleaning device, in particular the volume flow or a variable corresponding to the volume flow, is automatically determined and compared with a limit or reference value, in particular empirically determined and electronically stored, preferably in order to determine a deviation between the determined actual value and the reference value. The actual value, the reference value, and / or the result of the comparison or the deviation between the actual value and the reference value are / are communicated, in particular displayed, via a user interface of the cleaning device, particularly preferably in addition to the display of the current performance level and / or the current fill level of the cleaning device.

[0012] Consequently, the actual value or the comparison between the actual value and the reference value during cleaning or in real time provides a user with comprehensible and meaningful feedback on the current suction or cleaning performance, which improves the use of the cleaning device, the understanding of the cleaning process and the interaction with the cleaning device.

[0013] The possibility of adjusting the power levels for the blower performance, which is already known from the state of the art, does not provide any informative feedback on the cleaning process or on the actual occurrence and / or the condition of the cleaning device, especially when used alone.

[0014] For example, with a preset blower power, the cleaning performance may be too low or too high due to the type of cleaning surface, an attachment used and / or the setting of the attachment used.

[0015] With the proposed method, a user can recognize in a particularly simple and intuitive way on the basis of the notification if the actual value of the power variable deviates from the reference value to such an extent that sufficient removal of dirt particles is no longer guaranteed or that the power of the fan could be reduced in order to reduce the demand for electrical energy.

[0016] The performance parameter is preferably the (air) volume flow through the cleaning device or the flow-carrying components of the cleaning device, such as the intake line. Additionally or alternatively, the performance parameter can also be a parameter corresponding to the (air) volume flow, such as an (average) flow velocity, a working pressure, or the suction or cleaning power of the cleaning device.

[0017] However, the value corresponding to the volume flow should preferably not be the fill level of the cleaning device's container, as the fill level and cleaning performance only partially correlate. Thus, even with a nearly full container, sufficient cleaning performance can still be achieved with the appropriate fan power selection.

[0018] However, it is preferred that, in addition to the actual value of the power variable, the fill level of the container is communicated, in particular displayed, via the user interface.

[0019] To determine the actual value of the power variable, the existing (static) pressure, in particular the differential pressure with the (immediate) surroundings, is measured in the cleaning device, preferably in the container or downstream of the container, using a pressure sensor. The measured pressure is then converted, in particular using the data processing unit of the cleaning device, based on a preferably empirically determined and electronically stored relationship between the power variable and the pressure, in particular based on a characteristic curve, to determine the actual value of the power variable.

[0020] In this way, the actual value of the power variable, especially the volume flow, can be determined particularly easily and reliably. In particular, no additional sensors for the indirect or direct determination of the power variable, such as a flow meter or anemometer, are required.

[0021] As already explained, the actual value, the reference value, and / or the deviation between the actual value and the reference value are preferably communicated to the user automatically via the user interface, in particular displayed. The user can then decide, based on the message, whether the fan power and / or the contact pressure on the cleaning surface should be adjusted.

[0022] According to a particularly preferred method variant, it is automatically determined whether the performance of the fan, hereinafter referred to as fan performance, needs to be adjusted depending on the deviation between the actual value of the performance variable and the reference value.

[0023] Preferably, depending on the deviation between the actual value of the power variable and the reference value, a message is sent via the user interface with a request to adjust the fan power and / or with a request to adjust the contact pressure of the cleaning device on the cleaning surface.

[0024] For example, the user interface can provide information about the power level and / or contact pressure at which a sufficient flow rate or working pressure is available for the cleaning process. This enables particularly simple and intuitive operation of the cleaning device.

[0025] According to a particularly preferred method variant, the fan power is automatically adjusted depending on the deviation between the actual value of the power variable and the reference value. This further increases user-friendliness.

[0026] The reference value is preferably determined empirically or through appropriate tests and stored electronically, for example in a database and / or in a memory of the data processing device.

[0027] In particular, the reference value is an empirically determined (target) value for the performance level at which optimal cleaning performance is achieved, i.e. the highest possible dirt particle removal is achieved with, at the same time, low electrical energy consumption and / or with the lowest possible noise emission and / or with the lowest possible mechanical stress on the cleaning surface.

[0028] The reference value may depend on the type of cleaning surface, the use of an attachment, and / or the settings of the attachment used. For example, the reference flow rate for a hard floor may be lower than the reference flow rate for a carpet.

[0029] According to a further aspect of the present invention, a reference value is provided or empirically determined and electronically stored for different cleaning surfaces, attachments, and / or settings of the attachment used. This makes it possible to compare the determined actual value with the appropriate reference value for the current application.

[0030] According to a particularly preferred method variant, the type of cleaning surface, the use of an attachment and / or the setting of an attachment is automatically detected or specified via the user interface, wherein the reference value assigned to the cleaning surface, the attachment or the setting of the attachment is automatically selected and compared with the determined actual value of the power variable.

[0031] The type of cleaning surface, the use of an attachment, and / or the setting of the attachment can, for example, be automatically detected by assigning the measured (differential) pressure and a parameter of the blower, such as the (set) blower power, the current torque, the current speed, and / or the (current) electrical power consumption, to a preferably empirically determined reference pressure (range) that corresponds to the blower parameter on the one hand and the type of cleaning surface, the use of the attachment, and / or the setting of the attachment on the other. Based on the parameter and the measured pressure, it is therefore possible to determine the type of cleaning surface, the attachment being used, and / or the setting of the attachment.

[0032] In this way, the type of cleaning surface, the use of an attachment, and / or the attachment settings can be automatically detected without additional sensors and / or electronics, allowing the appropriate reference value to be selected and compared with the actual performance value. This provides the user with particularly precise feedback on the current cleaning performance and the actual process.

[0033] However, other solutions are also possible to automatically detect the type of cleaning surface, the use of the attachment, and / or the adjustment of the attachment. For example, the type of cleaning surface can be (directly) measured, particularly using an ultrasonic sensor, a distance sensor, and / or a force or torque sensor in the attachment.

[0034] As already explained, an empirically determined and electronically stored relationship between the power variable and the pressure, in particular a characteristic curve, is preferably used to determine the actual value of the power variable based on the measured pressure.

[0035] The relationship between power and pressure can vary depending on the type of cleaning surface, the use of an attachment, the attachment's adjustment, and / or the tank fill level. For example, the (working) pressure in the suction line increases more sharply with increasing flow rate when cleaning a carpet than when cleaning a hard floor.

[0036] According to a further aspect of the present invention, which can also be implemented independently, a relationship between the power variable and the pressure, in particular a characteristic curve, is stored electronically in the database and / or the data processing device of the cleaning device for different cleaning surfaces, attachments, settings of the attachment and / or fill levels. Depending on the type of cleaning surface, the use of an attachment, the setting of the attachment and / or the fill level, the relationship corresponding to the type of cleaning surface, the use of the attachment, the setting of the attachment and / or the fill level, in particular the corresponding characteristic curve, is automatically selected from a plurality of relationships between the power variable and the (differential) pressure, in particular from a plurality of characteristic curves, preferably wherein the selected relationship orthe measured (differential) pressure of the selected characteristic curve is converted into the actual value of the power variable and communicated to a user via the user interface.

[0037] This enables a particularly precise and application-dependent determination of the power size.

[0038] The present invention further relates to a cleaning device that is designed to carry out the proposed method or has means for carrying out the proposed method. In this way, corresponding advantages are realized.

[0039] Finally, the present invention also relates to a computer program product, comprising instructions which, for the execution of the program by a computer or by the cleaning device, cause the computer or the cleaning device to carry out the method described herein or individual method steps of the method described herein.

[0040] The term "blower power" in the context of the present invention preferably refers to the electrical power consumed or the mechanical power output of the cleaning device's blower. The blower power is preferably determined by the torque and speed of the blower. Consequently, the blower power can be adjusted by changing the speed and / or torque.

[0041] The terms "cleaning performance" or "air performance" or "suction performance" within the meaning of the present invention preferably refer to the performance of the cleaning device with which the cleaning surface is cleaned. In particular, cleaning performance is a physical (characteristic) parameter for assessing the performance of the cleaning device.

[0042] The cleaning performance is preferably the product of the volume flow prevailing at a predefined location, for example the inlet or suction opening, of the cleaning device or the attachment part and the negative or working pressure prevailing at this location.

[0043] The unit of measurement for cleaning performance is usually AirWatt.

[0044] While the cleaning performance of a cleaning device depends to some extent on its blower power, a high blower power does not necessarily mean that the cleaning device will have a high cleaning performance at the inlet. In particular, the geometry of the flow-carrying components of the cleaning device and the fill level of the container can significantly impair cleaning performance.

[0045] The term "working pressure" in the context of the present invention preferably refers to the (static) (differential) pressure present at the inlet or a point in the intake tract or intake line of the cleaning device. The working pressure is preferably the maximum negative pressure compared to the atmosphere / ambient or atmospheric pressure. Consequently, the working pressure is preferably the differential pressure with respect to the (immediate) surroundings. The higher the working pressure at a constant flow rate, the better the cleaning performance.

[0046] A pressure sensor, as defined in the present invention, is a measuring device for measuring or determining the (static) pressure in a medium, such as air. A pressure sensor can be designed as an absolute, differential, or relative pressure sensor.

[0047] An absolute pressure sensor measures the (static) pressure compared to a vacuum as a reference (absolute pressure), preferably where a vacuum is present at a pressure of less than 300 mbar.

[0048] A differential pressure sensor measures the difference between two absolute pressures (differential pressure).

[0049] A relative pressure sensor measures the (static) pressure compared to the atmosphere / ambient or atmospheric pressure, preferably where the atmospheric air pressure is 1013 mbar.

[0050] A relative pressure sensor in the sense of the present invention is therefore a differential pressure sensor that measures the difference between an absolute pressure and atmospheric pressure.

[0051] A pressure sensor within the meaning of the present invention preferably has precisely one measuring point for determining the (static) pressure at the measuring point. A pressure sensor within the meaning of the present invention can be designed, for example, as a piezoresistive, piezoelectric, capacitive, and / or inductive pressure sensor.

[0052] In the proposed method, the (differential) pressure to the (immediate) environment is preferably measured in or downstream of the container or in the intake manifold or in the intake line or upstream of the container, as will be explained in more detail below.

[0053] An attachment within the meaning of the present invention is preferably an optional and / or replaceable component of the cleaning device. An attachment can be, for example, a nozzle, a brush, a rotating cleaning roller, a particularly oscillating cleaning cloth, a tank for a liquid cleaning agent, and / or a blower, or comprise one of the aforementioned components. In particular, the cleaning device or a base part of the cleaning device can be coupled or fluidically connected to different attachments in order to adapt the cleaning device to the specific application or function of the cleaning device.

[0054] The aforementioned aspects, features and / or method steps or variants of the present invention as well as the aspects, features and / or method steps or variants of the present invention resulting from the claims or the following description can in principle be implemented independently of one another, but also in any desired combination or sequence.

[0055] Further aspects, advantages, features, and characteristics of the present invention will become apparent from the claims and the following description of a preferred embodiment with reference to the figures. It shows: Fig. 1 a perspective view of a proposed cleaning device; Fig. 2 a schematic flow diagram of a proposed method for operating the cleaning device or individual method steps of the proposed method; Fig. 3 a schematic diagram with two characteristic curves for determining the volume flow as a function of the measured differential pressure; and Fig. 4 a tabular representation of different reference pressures depending on the type of cleaning surface and the set fan power.

[0056] In the figures, some of which are not to scale and are merely schematic, the same reference symbols are used for identical, identical or similar parts and components, whereby corresponding or comparable properties or advantages are achieved, even if repetition is omitted.

[0057] Fig. 1 shows a proposed cleaning device 10.

[0058] The cleaning device 10 is preferably designed as a handheld vacuum cleaner, a handheld wet mop, or a combined vacuum and mop device. In particular, the cleaning device 10 is designed to vacuum or wipe up suction air or air and / or a liquid cleaning agent together with the vacuumed material from a cleaning surface.

[0059] The cleaning device 10 has a preferably elongated or rod-shaped base part 10B and an attachment part 10V connected to the base part 10B, in particular wherein the attachment part 10V rests on the cleaning surface during cleaning of the cleaning surface.

[0060] The cleaning device 10, in particular the base part 10B, preferably has an elongated or rod-shaped handle 10H.

[0061] A user can guide the cleaning device 10 or the attachment 10V over the cleaning surface using the handle 10H in order to clean the cleaning surface using the cleaning device 10, in particular to vacuum and / or wipe it.

[0062] In the illustrated embodiment, the attachment 10V is equipped with two wheels 10W to facilitate the movement of the cleaning device 10 over the cleaning surface. However, other solutions are also possible.

[0063] The cleaning device 10, in particular the attachment part 10V, preferably has a particularly elongated or slot-like suction opening 10X through which the suction material and / or cleaning agent applied to the cleaning surface can be picked up or sucked up. Therefore, in the usual position of use, the suction opening 10X is arranged on a side facing the cleaning surface.

[0064] Optionally, the cleaning device 10, in particular the attachment part 10V, is equipped with a cleaning element, such as a rotating cleaning roller or an oscillating cleaning cloth, a tank for a liquid cleaning agent and / or a blower (not shown).

[0065] As already explained above, the 10V attachment is detachably connected to the base part 10B. In particular, the cleaning device 10 or the base part 10B can be used with different 10V attachments. For example, one 10V attachment can be provided with an electric brush for vacuuming, and another 10V attachment can be provided with an oscillating cleaning cloth for damp wiping.

[0066] The cleaning device 10, in particular the base part 10B, preferably comprises an electric motor-driven fan 10G, a container 10F, a suction line 10C, and an outlet line 10L, preferably wherein the fan 10G, the container 10F, the suction line 10C, and the suction opening 10X are fluidly connected to one another. In particular, the suction line 10C fluidly connects the suction opening 10X to the container 10F.

[0067] The blower 10G is preferably arranged downstream of the container 10F.

[0068] By means of the blower 10G, it is possible to convey suction material or air and / or a liquid cleaning agent together with suction material from the cleaning surface via the suction opening 10X and / or the suction line 10C into the container 10F.

[0069] In the container 10F, the collected suction material is separated from the air, for example by means of a filter arranged in the container 10F (not shown), whereby the (cleaned) air is then released back into the environment via the outlet line 10L.

[0070] The cleaning device 10, in particular the base part 10B, preferably comprises a data processing device 10R, a control device 10S, a user interface 10U, a battery 10A and / or a pressure sensor 10M, wherein the data processing device 10R, the control device 10S, the user interface 10U, the pressure sensor 10M, the battery 10A and / or optionally also the attachment part 10V are electrically connected to one another, as in Fig. 1 indicated by dashed lines.

[0071] The electrical components of the cleaning device 10, in particular the fan 10G, the pressure sensor 10M, the data processing device 10R, the control device 10S, the user interface 10U and / or the attachment 10V are preferably (exclusively) supplied with electrical energy via the battery 10A.

[0072] The cleaning device 10 can therefore clean the cleaning surface wirelessly or without a wired connection to an external energy source, such as a power grid.

[0073] The control device 10S is preferably designed to control the fan 10G, in particular to activate or deactivate it or to adjust the power of the fan 10G, hereinafter referred to as fan power PG.

[0074] The pressure sensor 10M is preferably designed as an absolute or differential pressure or relative pressure sensor or is designed to determine or measure the (static) (absolute) pressure or differential pressure with respect to the environment.

[0075] Particularly preferably, the pressure sensor 10M is designed to measure the (static) (absolute) pressure or the differential pressure relative to the ambient air in the intake line 10C or upstream of the container 10F and / or in the outlet line 10L or downstream of the container 10F. In particular, a measuring point of the pressure sensor 10M is provided in the intake line 10C and / or an (additional) measuring point of the pressure sensor 10M is provided in the outlet line 10L.

[0076] In the illustrated embodiment, the cleaning device 10 has a plurality of pressure sensors 10M or measuring points, wherein a first pressure sensor 10M or a first measuring point is provided in the intake line 10C and a second pressure sensor 10M or a second measuring point is provided in the outlet line 10L. However, it is also fundamentally possible for the cleaning device 10, in particular the base part 10B, to be equipped with only one pressure sensor 10M.

[0077] The measured values ​​measured by the pressure sensor 10M are preferably processed and evaluated by the data processing device 10R, as will be explained in more detail below.

[0078] Optionally, the cleaning device 10 is (data-technically) connected or connectable to a mobile device 20, such as a tablet, smartphone or the like, and / or a (central) data processing device, hereinafter referred to as central device 30.

[0079] Preferably, the cleaning device 10, in particular the base part 10B, has a communication device (not shown) in order to technically couple the cleaning device 10 to one or more (external) devices / devices, such as the mobile device 20 and / or the central device 30, for data exchange or signal transmission.

[0080] In particular, a wireless data connection can be established between the cleaning device 10 and the mobile device 20 and / or the central device 30 in order to transmit a signal and / or information, such as measured values ​​of the pressure sensor 10M, reference values ​​and / or control commands, or to exchange them between the cleaning device 10 and the mobile device 20 and / or the central device 30, wherein the data exchange or signal transmission can take place indirectly or directly.

[0081] A (central) data processing device or central device within the meaning of the present invention is preferably a computer, a server, or a server network. However, a central device can also be a virtual unit of several computers or implemented through so-called cloud computing.

[0082] The cleaning device 10, in particular the data processing device 10R, is preferably connected or connectable to a database (for data purposes). The central device 30 preferably comprises the database. Alternatively or additionally, the cleaning device 10 and / or the mobile device 20 can comprise the database, a copy of the database, and / or an additional database.

[0083] A database in the sense of the present invention is a (digital) collection of data or data sets with multiple data, such as measured values ​​and / or reference values.

[0084] As already explained, the cleaning device 10, in particular the base part 10B, has a user interface 10U, preferably wherein the user interface 10U is formed by at least one display device 10D, such as a screen or a touchscreen, and / or at least one input device 10E, in particular an operating element.

[0085] Through the user interface 10U, a user of the cleaning device 10 can interact with the cleaning device 10 and / or extract and / or add one or more pieces of information / parameters, such as characteristics, reference values ​​or the like, to the cleaning device 10.

[0086] Particularly preferably, a user can switch the cleaning device 10 on or off, configure the cleaning device 10 and / or specify or add one or more items of information / parameters and / or control commands to the cleaning device 10, in particular to the data processing device 10R, such as the fan power PG and / or the type of cleaning surface, via the user interface 10U, in particular the input device 10E.

[0087] In the illustrated embodiment, the input device 10E is formed by an operating element, in particular a selector switch, on the handle 10H.

[0088] In addition, a user can obtain one or more information / parameters / measured values, in particular about the state of the cleaning device 10 or the cleaning process, such as the volume flow V, the working pressure, the fan power PG selected or automatically set by means of the input device 10E, the charge state of the battery 10A and / or the fill level of the container 10F via the user interface 10U, in particular the display device 10D.

[0089] The information / parameters / measured values ​​can be displayed visually, for example, using graphic symbols, numbers and / or words, and / or in the form of a bar chart, a histogram, an XY plot, or the like. Additionally or alternatively, the information / parameters / measured values ​​can be communicated acoustically and / or haptically.

[0090] In the illustrated embodiment, the display device 10D of the user interface 10U is formed by a screen integrated into a main body of the base part 10B. However, solutions are also possible in which the display device 10D is also provided on the handle 10H.

[0091] Additionally or alternatively, the mobile device 20 may have or form the or an additional user interface 10U of the cleaning device 10.

[0092] In the proposed cleaning device 10, it is provided that, in particular in addition to the charge state, the fill level of the container 10F and / or the power level of the blower 10G or the blower power PG, an actual value of a performance variable for the cleaning performance PR, a reference value for the (optimal) cleaning performance PR and / or a deviation between the actual value and the reference value is communicated, in particular displayed, to a user by means of the user interface 10U, in particular the display device 10D, as will be explained in more detail below.

[0093] The (mathematical) relationships, equations, tables and / or diagrams for processing and evaluating the measured values, in particular for determining the actual value of the power variable and / or for selecting a reference value, are preferably stored or stored electronically - for example as functional equations or tables - in the data processing device 10R and / or the central device 30, particularly preferably in a memory of the data processing device 10R and / or the central device 30, and / or in the database.

[0094] In the following, the Fig. 2 to Fig. 4 the proposed method for operating the cleaning device 10 is described in more detail.

[0095] Fig. 2 shows a schematic flow diagram of the proposed method for operating the cleaning device 10 or individual method steps of the proposed method.

[0096] Fig. 3 shows a schematic diagram with two exemplary characteristic curves K1 and K2 for determining the volume flow V as a function of the measured (differential) pressure dp.

[0097] Fig. 4 shows a tabular representation of various reference pressures dp ref11 to dp ref33 depending on the type of cleaning surface F1 to F3 and the set fan power PG1 to PG3.

[0098] The method is preferably multi-stage or multi-step. In particular, the method comprises several process steps, whereby the individual process steps can in principle be carried out independently of one another and in any order, unless otherwise stated below.

[0099] The proposed method is preferably carried out by means of the cleaning device 10, in particular the data processing device 10R, the control device 10S, the pressure sensor 10M, the blower 10G and / or the user interface 10U.

[0100] The cleaning device 10, in particular the data processing device 10R, is preferably designed to carry out the method described herein or individual or all method steps.

[0101] Preferably, the commands or the algorithm for executing the proposed method or individual method steps of the proposed method are stored electronically in a (data) memory of the cleaning device 10, in particular the data processing device 10R.

[0102] However, it is also possible that one or more method steps are carried out by means of an (external) device or an (external) device, such as the central device 30 and / or the mobile device 20, and / or that individual or more commands for executing the method or individual method steps are stored there.

[0103] The proposed method preferably includes one or more method steps and / or a program to determine the current value or actual value of a performance variable of the cleaning device 10 and optionally to compare it with an electronically stored reference value.

[0104] The proposed method is characterized in that, in particular based on a (differential) pressure measured by means of the pressure sensor 10M, a current value or actual value of a performance variable of the cleaning device 10, in particular of the volume flow V or a variable corresponding thereto, is automatically determined and compared with an electronically stored reference value in order to determine a deviation between the actual value and the reference value and to communicate this deviation to a user, in particular via the user interface 10U, particularly preferably the display device 10D, so that the user is informed in real time or receives feedback as to whether the cleaning of the cleaning surface is being carried out under optimal conditions or the conditions provided by the manufacturer.

[0105] The method is preferably initiated by starting or switching on the cleaning device 10, in particular by means of the input device 10E, preferably in a first method step / operation A1.

[0106] Optionally, in a further / second method step A2, a user can set the fan power PG and / or select / specify the type of cleaning surface or confirm the type of cleaning surface automatically detected by the cleaning device 10 via the user interface 10U, in particular the input device 10E.

[0107] Subsequently or in a further / third process step / operation A3 or during the cleaning of the cleaning surface, the differential pressure dp to the atmosphere / ambient or to the atmospheric pressure is measured using the pressure sensor 10M.

[0108] As already explained, the differential pressure dp is preferably measured in the intake tract or the intake line 10C or upstream of the tank 10F and / or in the outlet line 10L or downstream of the tank 10F.

[0109] If the differential pressure dp is measured in the intake tract or intake line 10C, it can either be displayed directly as the working pressure via the user interface 10U, in particular the display device 10D. Alternatively, it is possible to convert the measured differential pressure dp into the working pressure using a relationship, particularly one that is empirically determined and stored electronically.

[0110] Subsequently, or in a further / fourth process step / process A4, the actual value of the power variable is determined by means of the measured differential pressure dp, in particular using a relationship, such as a characteristic curve K, between the power variable and reference pressure.

[0111] The relationship between the power variable and the differential pressure dp is preferably determined empirically and stored electronically in the cleaning device 10, the mobile device 20, the central device 30 and / or the database.

[0112] Preferably, the performance variable is the (air) volume flow V through the cleaning device 10, in particular the intake line 10C and / or the outlet line 10L.

[0113] Alternatively, the performance variable can also be a variable corresponding to the (air) volume flow V, such as an (average) flow velocity w, a working pressure or a cleaning performance PR of the cleaning device 10.

[0114] However, it is preferred that the power variable or the variable corresponding to the volume flow V is not the fill level of the container 10F. Preferably, the fill level of the container 10F is determined independently of the power variable and / or displayed in addition to the power variable, as explained in more detail below.

[0115] In Fig. Figure 3 shows two exemplary characteristic curves K1 and K2, which illustrate the dependence of the differential pressure dp on the volume flow V. The diagram shows that the differential pressure dp increases with increasing volume flow V, preferably at least substantially quadratically.

[0116] In Fig. 3 also shows three different performance levels PG1 to PG3 for the fan power PG. Depending on the fan power PG, which is set, in particular, via the user interface 10U, different ranges for the differential pressure dp and the volume flow V result. In trouble-free operation, higher differential pressures dp and volume flow V are achieved at a higher fan power PG than at a lower fan power PG.

[0117] As in Fig. 3 by dashed lines, by means of the characteristic curve K1 or K2, for example, a first measured differential pressure dp1 can be converted into a first volume flow V1 or a corresponding value, in particular according to the following equation: V=a*(dp)e1+b*(dp)e2+c, with V in particular in [m 3 / s] as volume flow, dp especially in [N / m 2] as (differential) pressure compared to the environment, a, b and c as coefficients and e1 and e2 as exponents, whereby the coefficients and the exponents are preferably determined from a non-linear regression.

[0118] In addition or alternatively to the volume flow V, the total filtered air volume, an (average) flow velocity w, a working pressure and / or a cleaning performance PR of the cleaning device 10 can be derived based on the calculated volume flow V and / or directly based on the measured differential pressure dp.

[0119] The total filtered air volume is calculated by multiplying the volume flow V by the cleaning time or the time the fan 10G is activated.

[0120] If the room volume or the volume of the room to be cleaned is known, the total filtered air volume can be specified additionally or alternatively as a percentage of filtered air volume. The room volume can, for example, be entered by the user via the user interface 10U and / or determined by the appropriate sensors of the cleaning device 10.

[0121] The flow velocity w is obtained, for example, by dividing the calculated volume flow V by the cross-sectional area at the measuring point, in particular the cross-sectional area of ​​the intake line 10C or the outlet line 10L, in particular according to the following equation: w=V / Q, with w in [m / s] as the (average) flow velocity at the measuring point, V in particular in [m 3 / s] as volume flow and Q in [m 2 ] as the cross-sectional area at the measuring point.

[0122] The cleaning performance PR is calculated by multiplying the working pressure by the calculated volume flow V, in particular according to the following equation: PR=dp*V, with PR in [W] as the cleaning performance, dp in particular in [N / m 2 ] as (differential) pressure in the intake line 10C or in the intake opening 10X and V, in particular in [m 3 / s] as the volume flow in the intake line 10C or in the intake opening 10X.

[0123] In an optional further / fifth process step / process A5, a message about the actual value of the power variable is sent via the user interface 10U, in particular the display device 10D.

[0124] Particularly preferably, the actual value of the power variable is visually displayed to a user via the user interface 10U, in particular the display device 10D, for example by means of graphic symbols, numerical symbols, and / or word symbols. In particular, the volume flow V, the working pressure dp, and / or the flow velocity w can be displayed in parallel or sequentially.

[0125] The actual value of the power variable determined in this way is preferably compared in a further / sixth method step / process A6 with a reference value stored in particular in the data processing device 10R, the mobile device 20, and / or the central device 30. In particular, the deviation between the actual value and the reference value is determined, wherein the deviation can be used as a control difference for controlling the fan 10G or the fan power PG, as will be explained in more detail below.

[0126] Preferably, the differential pressure dp is measured continuously and / or the actual value of the power variable is calculated continuously. In particular, the actual value is continuously compared with the reference value and monitored to determine whether the actual value lies within a predefined reference range.

[0127] The reference value is, for example, an optimal value or setpoint for the cleaning process, the type of cleaning surface, the 10V attachment used, and / or the settings of the 10V attachment. The reference value is particularly preferably used as a reference variable for controlling the blower 10G or the blower power PG, as explained in more detail below. However, it is also possible for the reference value to be a maximum value or upper limit, or a minimum value or lower limit.

[0128] As already explained, according to a preferred method variant, the reference value can depend on the type of cleaning surface, the use of a 10V attachment, and / or the setting of the 10V attachment used. For example, a first reference value can be stored or used for a first cleaning surface, such as a carpet, or a first 10V attachment, and a second or different reference value can be stored or used for a second cleaning surface, such as a hard floor, or a second 10V attachment.

[0129] Preferably, depending on the type of cleaning surface, the use of the 10V attachment and / or the setting of the 10V attachment used, different reference values ​​are automatically used for comparison with the actual value of the power variable, preferably wherein the type of cleaning surface, the use of a 10V attachment and / or the setting of the 10V attachment used is automatically detected, as explained in more detail below.

[0130] Preferably, the deviation between the actual value of the power variable and the reference value is calculated. Alternatively, it is determined whether the actual value of the power variable exceeds or falls below the reference or limit value.

[0131] Preferably, a message about the actual value of the power variable, the reference value and / or the deviation between the actual value and the reference value is sent via the user interface 10U, in particular the display device 10D.

[0132] Particularly preferably, the actual value, the reference value and / or the deviation between the actual value and the reference value is displayed to a user optically via the user interface 10U, in particular the display device 10D, for example by means of graphic symbols, numerical symbols and / or word symbols and / or in the form of a bar chart, a histogram, an XY plot or the like, wherein the values ​​can be displayed in parallel or sequentially.

[0133] By means of a parallel or sequential display of the volume flow V, the differential pressure dp, the reference value and / or the deviation between the reference value and the actual value, the user of the cleaning device 10 is shown the interaction between the parameters.

[0134] In addition, embodiments are also possible in which the display automatically adapts or expands when the or a 10V attachment is connected or changed, in particular if the 10V attachment generates alternative or additional measurement data.

[0135] Additionally or alternatively, the actual value, the reference value, and / or the deviation can be displayed in text form, with explanations, a request, and / or a recommendation. For example, it is possible for a user to be notified that the fan power PG and / or the contact pressure of the cleaning device 10 needs to be adjusted to the cleaning surface, in particular to be increased or decreased. However, it is also possible for the fan power PG to be adjusted automatically depending on the deviation between the actual value of the power variable and the reference value.

[0136] In the event that the actual value corresponds to the reference value, the actual value is greater than a lower reference or limit value and / or the actual value is less than an upper reference or limit value, it is preferably subsequently or in an optional further / seventh process step / operation A7 that the cleaning process is being carried out correctly or that no adjustment of the fan power PG and / or the contact pressure needs to be made.

[0137] In the event that the actual value does not correspond to the reference value, the actual value reaches or falls below a lower reference or limit value and / or the actual value reaches or exceeds an upper reference or limit value, a corresponding message is issued in a further / eighth process step / operation A8.

[0138] In this case, a message is particularly preferably sent via the user interface 10U with a recommendation / request to adjust the fan power PG and / or the contact pressure. A user can then adjust the fan power PG using the input device 10E and / or the contact pressure on the cleaning surface using the handle 10H.

[0139] Additionally or alternatively, the fan power PG can be automatically adjusted in a further / ninth process step / process A9. The fan power PG is preferably automatically increased if the actual value of the power variable, in particular the volume flow V, is too low or reaches or falls below a (first) reference or limit value. The fan power PG is preferably automatically reduced if the actual value of the power variable, in particular the volume flow V, is too high or the actual value reaches or exceeds a (second) reference or limit value.

[0140] In particular, the actual value can be used as a controlled variable, the reference value as a command variable and the deviation between the actual value of the power variable and the reference value as a control difference for controlling or automatically adjusting the fan power PG as a manipulated variable.

[0141] Preferably, subsequently or in a further / tenth process step / process A10, the differential pressure dp is (again) measured and the actual value of the power variable is determined on the basis of the differential pressure dp and the actual value is compared with the difference value, as already explained.

[0142] Subsequently, or in a further / eleventh process step / operation A11, it is checked whether the actual value corresponds to the reference value, reaches or falls below a lower reference or limit value and / or reaches or exceeds an upper reference or limit value.

[0143] In particular, it is checked whether increasing the contact pressure and / or adjusting the fan power PG has changed the actual value of the power variable to such an extent that the cleaning process is carried out properly. If this is the case, a user is given corresponding feedback via the user interface 10U in a further / twelfth process step / process A12.

[0144] If the check reveals that the deviation between the actual value and the reference value is too large, particularly after adjusting the contact pressure and / or the blower power PG, a corresponding notification is sent via the user interface 10U, preferably in a further / fourteenth process step / process A14. In particular, a user is notified that a possible error, such as a faulty application, a full container 10F, and / or a clogged intake tract, is present.

[0145] Optionally, the cleaning process is automatically interrupted depending on the specific condition, in particular when an error is identified, preferably in a further process step / process A13.

[0146] The identified condition / error and / or the interruption of the cleaning process is preferably communicated or displayed to a user, in particular by means of a corresponding output / message, particularly preferably in a further method step / process A14.

[0147] As already explained, according to a preferred method variant, the type of cleaning surface, the use of a 10V attachment and / or the setting of the 10V attachment is / are automatically detected.

[0148] Preferably, the measured differential pressure dp and a parameter of the blower 10G, such as the set blower power PG, the speed, the torque and / or the absorbed electrical power, are assigned to a reference pressure (range) which corresponds to the parameter on the one hand and the type of cleaning surface, the attachment part 10V and / or the setting of the attachment part 10V on the other hand.

[0149] In particular, a relationship between the differential pressure dp, the parameter of the blower 10G and the type of cleaning surface, the use of the attachment 10V and / or the setting of the attachment 10V can be determined experimentally or empirically and preferably stored or saved electronically as a reference pressure (range), for example in the data processing device 10R, the mobile device 20 and / or the central device 30.

[0150] Fig. 4 shows an exemplary table in which different types of cleaning surfaces F1 to F3, depending on different fan powers PG1 to PG3, are each assigned a reference pressure (range) dp ref11 to dp ref33 are assigned. Corresponding tables for various 10V attachments and / or 10V attachment settings may also be provided.

[0151] By means of the relationship between the differential pressure dp, the parameter of the blower 10G on the one hand and the type of cleaning surface F1 to F3, the use of the attachment 10V and / or the setting of the attachment 10V on the other hand or by means of the table(s), it is possible to automatically detect the type of cleaning surface F1 to F3, the use of an attachment 10V and / or the setting of the attachment 10V based on the measured differential pressure dp and the set blower power PG.

[0152] However, it is also possible to detect the type of cleaning surface F1 to F3, the use of the attachment part 10V, and / or the adjustment of the attachment part 10V by other means, particularly by measurement. For example, the type of cleaning surface can be determined by an ultrasonic sensor, a distance sensor, a force or torque sensor, or the like, particularly in the attachment part 10V.

[0153] As already explained, the variation of the power output with the differential pressure dp is preferably determined empirically or through experiments. In particular, the relationship between the power output and the differential pressure dp is determined for different cleaning surfaces, different 10V attachments, and / or different settings of a 10V attachment.

[0154] For example, a first relationship, for example a first characteristic curve K1, between the power variable and the differential pressure dp for a first cleaning surface F1, for example a carpet, and a second relationship, in particular a second characteristic curve K2, between the power variable and the differential pressure dp for a second cleaning surface F2, for example a hard floor, can be determined, as in Fig. 2 shown.

[0155] Depending on the type of cleaning surface automatically detected or specified by a user, the use of an attachment part 10V automatically detected or specified by a user and / or the setting of the attachment part 10V automatically detected or specified by a user, a corresponding relationship, in particular a corresponding characteristic curve K, from several relationships, in particular several characteristic curves K, between the power variable and the differential pressure dp can be automatically selected in order to determine the power variable based on the measured differential pressure dp and the selected relationship.

[0156] If the differential pressure dp is measured in or downstream of the tank 10F - in addition to or alternatively to measuring the differential pressure dp in the intake tract or intake line 10C - the measured differential pressure dp can optionally be used to determine the fill level of the tank 10F.

[0157] When the container 10F fills with suction material, such as dust, the flow resistance through the container 10F increases and thus the pressure loss or pressure difference across the container 10F. Consequently, the pressure difference or differential pressure dp can be used as an indicator of the amount of suction material in the container 10F.

[0158] If the measured differential pressure dp reaches or exceeds a (critical) limit value - in particular one determined empirically and stored electronically - the container 10F or a filter in the container 10F is full or almost full.

[0159] Preferably, a user is informed, in particular displayed, via the user interface 10U when or that the container 10F is full and / or the filter in the container 10F needs to be replaced, particularly preferably in addition to the charge state of the battery 10A, the fan power PG, the actual value of the power variable, the reference value and / or the deviation between the actual value and the reference value.

[0160] However, it must also be taken into account that when measuring the differential pressure dp in or downstream of the tank 10F, the relationship between the power variable and the differential pressure dp may change depending on the fill level of the tank 10F.

[0161] For this purpose, a relationship, in particular a characteristic curve K, between the power variable and the differential pressure dp can be determined empirically or in experiments for different filling levels of the container 10F.

[0162] In particular, depending on the specific fill level of the container 10F, the relationship between the power variable and the differential pressure dp can then be automatically selected which corresponds to the existing fill level of the container 10F.

[0163] In this way, it is ensured that the actual value of the power variable can be reliably determined based on the differential pressure dp, even with different filling levels of the container 10F, when cleaning different cleaning surfaces, when using different attachments 10V and / or with different settings of the attachment 10V.

[0164] The proposed method is characterized in that the actual value of a performance variable, in particular the volume flow V or a corresponding variable, and optionally also the deviation between the actual value and a reference value are communicated to a user of the cleaning device 10 during cleaning, particularly in real time, in order to inform the user about the status of the cleaning device 10 and the effectiveness or efficiency of the cleaning process. By displaying the performance variable, the user is provided with a comprehensible and meaningful value that makes the technical processes more transparent and understandable and improves interaction with the cleaning device 10.

[0165] Individual aspects, features and method steps or variants of the present invention can be implemented independently of one another, but also in any combination or sequence.

[0166] In particular, the present invention relates to the following aspects, which can be realized independently of one another, but also in any combination with one another and / or the aforementioned aspects. 1. Method for operating a cleaning device (10), wherein suction material is sucked from a cleaning surface into a container (10F) of the cleaning device (10) by means of a fan (10G) of the cleaning device (10), wherein an actual value of a performance variable of the cleaning device (10), in particular the volume flow (V) or a corresponding variable, is automatically determined, whereby the actual value is automatically compared with an electronically stored reference value, and wherein a message about the actual value and the reference value is sent via a user interface (10U) of the cleaning device (10). 2. Method according to aspect 1, wherein the performance variable is a volume flow (V) or a variable corresponding to the volume flow (V), in particular a flow velocity (w), a working pressure or a cleaning performance (PR) of the cleaning device (10). 3. Method according to aspect 1 or 2, wherein in the cleaning device (10), preferably in the container (10F) or downstream of the container (10F), in particular by means of a pressure sensor (10M), a differential pressure (dp) is measured in order to determine the actual value of the power variable. 4. Method according to aspect 3, wherein a preferably empirically determined and electronically stored relationship between the power variable and the differential pressure (dp), in particular a characteristic curve (K), is used to determine the actual value of the power variable. 5. Method according to one of the preceding aspects, wherein it is automatically determined whether the fan power (PG) is to be adjusted depending on the deviation between the actual value of the power variable and the reference value. 6. Method according to one of the preceding aspects, wherein a message with a request to adjust the blower power (PG) and / or with a request to adjust the contact pressure of the cleaning device (10) on the cleaning surface is sent via the user interface (10U) depending on the deviation between the actual value of the power variable and the reference value. 7. Method according to one of the preceding aspects, wherein the fan power (PG) is automatically adjusted depending on the deviation between the actual value of the power variable and the reference value. 8. Method according to one of the preceding aspects, wherein the reference value depends on the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment (10V) used. 9. Method according to one of the preceding aspects, wherein the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment (10V) is automatically detected or specified via the user interface (10U). 10. Method according to one of the preceding aspects, wherein the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment (10V) is automatically detected by comparing a measured differential pressure (dp) and a set blower power (PG) with a preferably empirically determined reference pressure (dp ref11 -dp ref33) which corresponds to the blower power (PG) on the one hand and the type of cleaning surface (F1-F3), the use of the attachment (10V) and / or the setting of the attachment (10V) on the other hand. 11. Method according to one of the preceding aspects, wherein, depending on the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment (10V), a corresponding relationship, in particular a characteristic curve (K1, K2), is automatically selected from a plurality of relationships between the power variable and the differential pressure (dp), in particular a plurality of characteristic curves (K1, K2). 12. Method according to one of the preceding aspects, wherein the differential pressure (dp) in or downstream of the container (10F) is determined in order to determine the fill level of the container (10F) on the one hand and the actual value for the power variable on the other hand, wherein, depending on the fill level, the relationship, in particular the characteristic curve (K1, K2), which corresponds to the existing fill level is automatically selected from a plurality of relationships, in particular a plurality of characteristic curves (K1, K2), between the power variable and the differential pressure (dp). 13. Method according to aspect 11 or 12, wherein the actual value of the power variable is determined by means of the measured differential pressure (dp) and the selected relationship between the power variable and the differential pressure (dp) and is communicated to a user via the user interface (10U), in particular in addition to the fill level of the container (10F). 14. Cleaning device (10) for cleaning a cleaning surface, wherein the cleaning device (10) comprises a fan (10G), a data processing device (10R), a control device (10S), a pressure sensor (10M) and a user interface (10U), characterized by that the cleaning device (10) is designed to carry out the method according to one of the preceding aspects. 15. Cleaning device according to aspect 14, characterized in that the cleaning device (10) has a container (10F), wherein the pressure sensor (10M) is arranged in or downstream of the container (10F). List of reference symbols: 10 Cleaning device 10A battery 10B base part 10C intake line 10D display device 10E Input device 10F container 10G blower 10H handle 10L outlet line 10M pressure sensor 10R Data processing facility 10S control device 10U user interface 10V attachment part 10W wheels 10X intake opening 20 mobile devices 30 Central facility A1-A14 Procedural steps dp differential pressure dp ref11 -dp ref33 Reference pressures F1-F3 cleaning surfaces K characteristic curve K1 first characteristic curve K2 second characteristic curve PG fan power PG1-PG3 fan power levels PR cleaning performance Q cross-sectional area V volume flow w flow velocity

Claims

[1] Cleaning device (10) for cleaning a cleaning surface, wherein the cleaning device (10) comprises a fan (10G), a container (10F) and a user interface (10U), and wherein the cleaning device (10) is designed to carry out the following steps: Suction of suction material by means of the blower (10G) from the cleaning surface into the container (10F), Automatic determination of an actual value of a performance variable of the cleaning device (10), in particular the volume flow (V) or a corresponding variable, Automatic comparison of the actual value with an electronically stored reference value, and Output a message about the actual value and the reference value via the user interface (10U). [2] Cleaning device according to claim 1, wherein the power variable is a volume flow (V) or a variable corresponding to the volume flow (V), in particular a flow velocity (w), a working pressure or a cleaning power (PR) of the cleaning device (10). [3] Cleaning device according to claim 1 or 2, wherein the cleaning device (10) is designed to measure a differential pressure (dp) in the cleaning device (10), preferably in the container (10F) or downstream of the container (10F), in particular by means of a pressure sensor (10M), in order to determine the actual value of the power variable. [4] Cleaning device according to claim 3, wherein the cleaning device (10) is designed to use a preferably empirically determined and electronically stored relationship between the power variable and the differential pressure (dp), in particular a characteristic curve (K), in order to determine the actual value of the power variable. [5] Cleaning device according to one of the preceding claims, wherein the cleaning device (10) is designed to automatically determine, depending on the deviation between the actual value of the power variable and the reference value, whether the fan power (PG) is to be adjusted. [6] Cleaning device according to one of the preceding claims, wherein the cleaning device (10) is designed to output a message with a request to adjust the fan power (PG) and / or with a request to adjust the contact pressure of the cleaning device (10) on the cleaning surface via the user interface (10U) depending on the deviation between the actual value of the power variable and the reference value. [7] Cleaning device according to one of the preceding claims, wherein the cleaning device is designed to automatically adjust the fan power (PG) depending on the deviation between the actual value of the power variable and the reference value. [8] Cleaning device according to one of the preceding claims, wherein the reference value depends on the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment (10V) used. [9] Cleaning device according to one of the preceding claims, wherein the cleaning device is designed to automatically detect the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment (10V) or wherein the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment can be specified via the user interface (10U). [10] Cleaning device according to one of the preceding claims, wherein the cleaning device is designed to automatically detect the type of cleaning surface (F1-F3), the use of an attachment (10V) and / or the setting of an attachment (10V) by comparing a measured differential pressure (dp) and a set blower power (PG) with a preferably empirically determined reference pressure (dp ref11 -dp ref33 ) which corresponds to the blower power (PG) on the one hand and the type of cleaning surface (F1-F3), the use of the attachment (10V) and / or the setting of the attachment (10V) on the other hand. [11] Cleaning device according to one of the preceding claims, wherein the cleaning device (10) is designed to automatically select a corresponding relationship, in particular a characteristic curve (K1, K2), from a plurality of relationships between the power variable and the differential pressure (dp), in particular a plurality of characteristic curves (K1, K2), depending on the type of cleaning surface (F1-F3), the use of an attachment part (10V) and / or the setting of an attachment part (10V). [12] Cleaning device according to one of the preceding claims, wherein the cleaning device is designed to determine the differential pressure (dp) in or downstream of the container (10F) in order to determine the fill level of the container (10F) on the one hand and the actual value for the power variable on the other hand, wherein the cleaning device (10) is designed to automatically select, as a function of the fill level, from a plurality of relationships, in particular a plurality of characteristic curves (K1, K2), between the power variable and the differential pressure (dp), that relationship, in particular the characteristic curve (K1, K2), which corresponds to the existing fill level. [13] Cleaning device according to claim 11 or 12, wherein the cleaning device (10) is designed to determine the actual value of the power variable by means of the measured differential pressure (dp) and the selected relationship between the power variable and the differential pressure (dp) and to communicate this to a user via the user interface (10U), in particular in addition to the fill level of the container (10F). [14] Cleaning device according to one of the preceding claims, wherein the cleaning device (10) comprises a data processing device (10R), a control device (10S) and / or a pressure sensor (10M). [15] Cleaning device according to claim 14, wherein the pressure sensor (10M) is arranged in or downstream of the container (10F).

Images