DE102022133066A1 - Method for operating a cleaning device, control unit and cleaning device - Google Patents

Abstract

The invention relates to a method (300) for operating a cleaning device (100), wherein the method (300) comprises a step of reading (310) a cleaning chamber signal (132) which represents a parameter (P) of a cleaning chamber (110) filled with items to be cleaned (105). The method (300) further comprises a step of outputting (330) a start signal (335) in response to the cleaning chamber signal (132) when the parameter (P) satisfies a predetermined start criterion in order to automatically start a cleaning program for cleaning the items to be cleaned (105) arranged in the cleaning chamber (110).

Description

The invention relates to a method for operating a cleaning device, a control unit and a cleaning device according to the main claims.

With today's dishwashers, the user should decide after each loading step whether the dishwasher is fully loaded for the start of the washing process or not. All basket levels should be checked each time. In some cases, the baskets should also be pulled out to check the last few free spaces at the back. Once the dishwasher is fully loaded, the customer can select the desired program and start the washing process. When selecting the desired program, it is also important to select the right program for the dishes in the dishwasher.

All previous recognition functions in the dishwasher only show the customer certain information. Up to now, these have only been used for statistical purposes or to simply display information. They do not help the customer to use the dishwasher more intuitively and with significantly more convenience. The less the customer has to worry about special settings and start functions, the easier and more convenient they can go about their everyday life.

The invention has the object of enabling an improvement in terms of user comfort when using a cleaning appliance in general, such as a dishwasher.

According to the invention, this object is achieved by a method for operating a cleaning device, a control unit and a cleaning device with the features or steps of the main claims. Advantageous embodiments and further developments of the invention emerge from the following subclaims.

• - Einlesen eines Reinigungskammersignals, das einen Parameter einer mit zu reinigendem Reinigungsgut bestückten Reinigungskammer repräsentiert; und
• - Ausgeben eines Startsignals ansprechend auf das Reinigungskammersignal, wenn der Parameter ein vorbestimmtes Startkriterium erfüllt, um ein Reinigungsprogramm zur Reinigung des in der Reinigungskammer angeordneten Reinigungsguts automatisch zu starten.

The approach proposed here provides a method for operating a cleaning device, the method comprising the following steps:

• - Reading in a cleaning chamber signal that represents a parameter of a cleaning chamber loaded with items to be cleaned; and
• - Issuing a start signal in response to the cleaning chamber signal when the parameter satisfies a predetermined start criterion in order to automatically start a cleaning program for cleaning the items to be cleaned arranged in the cleaning chamber.

A cleaning device can be understood as a device for cleaning items to be cleaned. For example, such cleaning devices can be a dishwasher, a washing machine or even a commercial disinfection device with which a corresponding item to be cleaned, such as textiles, dishes or laboratory equipment, can be cleaned. This cleaning device comprises a cleaning chamber into which the item to be cleaned can be placed or stored, for example on corresponding mobile baskets. A cleaning chamber signal can be understood as a signal which maps a parameter that represents the item to be cleaned in the cleaning chamber. For example, such parameters can map a loading level or, generally speaking, a filling level of the cleaning chamber with items to be cleaned. The parameter can also represent a type or type of soiling on the item to be cleaned, for example whether dirt residues have dried on the item to be cleaned or what type of soiling it is, i.e. what material is deposited on the item to be cleaned and should be removed. A start signal can be understood as a signal which automatically starts a set cleaning program when a start criterion is present in order to initiate a cleaning process for the item to be cleaned. For example, such a start criterion can be met when a certain loading level of the cleaning chamber is reached, i.e. when a certain amount of items to be cleaned are placed or positioned in the cleaning chamber.

The approach proposed here is based on the realization that user comfort can be increased by automatically recognizing a parameter relating to the items to be cleaned in the cleaning chamber and, in response to this parameter, by actively and automatically starting the cleaning program itself. In this way, it is no longer necessary for a user to check and decide after each loading of the cleaning device whether a specific cleaning program should be initiated. This can also prevent, for example, the user from forgetting to activate it and subsequently having no clean or cleaned items to be cleaned. For example, it would be advantageous if these decisions "start after a load limit" and/or "select the optimal cleaning program" were automatically taken over by the cleaning device or, in particular, a dishwasher.

A favorable embodiment of the approach proposed here is one in which the filling level of the cleaning items in the cleaning chamber and/or the loading level of the cleaning chamber is determined as a parameter in the reading step. Such an embodiment offers the advantage of enabling a high additional benefit when using the cleaning device with a parameter that is easy to determine.

According to a further embodiment of the approach proposed here, a change parameter for changing the start criterion and/or for changing a cleaning program to be started can also be read in in the reading step, wherein in the output step the start signal is output using the changed start criterion and/or for starting the changed cleaning program, in particular wherein the change parameter is read in by a mobile device of a user of the cleaning device. A change parameter can, for example, represent a changed threshold value at which the start criterion is considered to be met. A changed cleaning program to be started can, for example, be understood to mean a new cleaning program which is intended to control a different sequence of cleaning steps compared to a cleaning program currently being used. Such an embodiment of the approach proposed here enables a very flexible mode of operation of the cleaning device, also with regard to special preferences of the user and/or for taking environmental protection aspects into account, for example.

An embodiment can be implemented particularly easily in which, in the reading step, an optical image of the interior of the cleaning chamber is read in, from which the parameter is determined, in particular where the optical image was recorded using activated interior lighting of the cleaning chamber. Such an embodiment offers the advantage that modern cleaning devices often have a camera for observing the interior of the cleaning device, and the desired parameters can also be quickly extracted from such optical images using image evaluation algorithms that are often also sophisticated.

If an item to be cleaned remains in the cleaning chamber for a long time, this often leads to dirt drying up or even mold forming. In order to take this effect into account as much as possible and thereby minimize health risks or a feeling of disgust on the part of the user, according to a further embodiment, a storage duration parameter can also be read in the reading step, which represents a previous storage duration of the recognized item to be cleaned in the cleaning chamber, wherein the start signal is issued in the output step using the storage duration parameter. Such storage duration parameters can be understood, for example, as information on how long the cleaning device has already been placed in the cleaning chamber. For this purpose, for example, in a previous reading step, the parameters or a load quantity or a type of dirt on the item to be cleaned in the cleaning chamber can be analyzed and corresponding information can be stored as a storage duration parameter, which can then be read out again and used, for example, to start the cleaning program. In this way, the cleaning program can advantageously be started in good time.

A particularly advantageous embodiment of the approach proposed here is one in which a type and/or type of contamination of the items to be cleaned arranged in the cleaning chamber is determined as a parameter in the reading step. Such an embodiment offers the advantage of starting the cleaning program early, depending on the type and/or type of contamination of the items to be cleaned, in order to avoid, for example, excessive drying of these contaminations, which could only be removed at a later point in time by significantly more intensive cleaning or increased resource expenditure.

In order to obtain the best possible cleaning result or to be able to give a user of the cleaning device a great deal of flexibility to fulfill their own preferences and/or wishes, according to a further embodiment of the approach proposed here, a cleaning program selected as a function of the cleaning chamber signal and/or by a user can be started with the start signal in the outputting step.

A particularly resource-saving embodiment of the approach proposed here is one in which the start signal is not output in the output step and/or a suppression signal is output if the parameter does not meet the start criterion in order to prevent the cleaning program from starting. Such an embodiment offers the advantage that the start of the cleaning program can be prevented if the start criterion has not yet been met, for example if the cleaning chamber is not yet sufficiently full.

Especially when the cleaning program has not yet been started despite a loading process, information about the current load and/or a time of detection of the items to be cleaned in the cleaning chamber should be stored for subsequent activation of the cleaning program. For this purpose, according to a further embodiment of the proposed approach, a step of storing information about a state of the items to be cleaned in the cleaning chamber can be provided if the parameter has not fulfilled the start criterion, in particular wherein in a subsequent output step the start signal is determined and output using the information.

A very efficient embodiment of the approach proposed here which increases comfort for a user is one in which, in the reading step, the cleaning chamber signal is determined as a parameter of a dishwasher interior loaded with dishes to be cleaned.

The approach presented here also creates a control unit that is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices. This embodiment of the invention in the form of a control unit can also solve the problem underlying the invention quickly and efficiently.

The control unit can be designed to read in input signals and to determine and provide output signals using the input signals. An input signal can, for example, represent a sensor signal that can be read in via an input interface of the device. An output signal can represent a control signal or a data signal that can be provided at an output interface of the device. The control unit can be designed to determine the output signals using a processing rule implemented in hardware or software. For example, the device can comprise a logic circuit, an integrated circuit or a software module and can be implemented as a discrete component, for example, or be comprised of a discrete component.

Also advantageous is a computer program product or computer program with program code that can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory. If the program product or program is executed on a computer or a device, the program product or program can be used to carry out, implement and/or control the steps of the method according to one of the embodiments described above.

Even if the approach described is described using a household appliance, the device or method described here can be used accordingly in connection with a commercial or professional device, for example a medical device, such as a cleaning or disinfection device, a small sterilizer, a large-scale disinfector or a container washing system.

• 1 eine seitliche Darstellung eines Reinigungsgeräts als Geschirrspülers mit einer Kamera zur Aufnahme der Beladungsinformationen;
• 2 eine schematische Darstellung eines von der Kamera aufgenommenen Bildes zur Auswertung der Beladungs-Informationen;
• 3 ein Ablaufdiagramm eines Ausführungsbeispiels eines Verfahrens zum Betreiben eines Reinigungsgerätes Verfahrensschritte zum Start eines Spülprogrammes nach dem Erreichen einer Beladungsgradgrenze mit favorisiertem Spülprogramm
• 4 ein weiteres eines Ausführungsbeispiels eines Verfahrens zum Betreiben eines Reinigungsgerätes; und
• 5 eine schematische Darstellung einer Mobile-App auf einem Mobilgerät eines Nutzers des Reinigungsgerätes mit der Bedienung der SmartStart-Funktion.

An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows

• 1 a side view of a cleaning device as a dishwasher with a camera for recording the loading information;
• 2 a schematic representation of an image taken by the camera for evaluating the loading information;
• 3 a flow chart of an embodiment of a method for operating a cleaning device. Process steps for starting a washing program after reaching a load limit with a preferred washing program
• 4 another embodiment of a method for operating a cleaning device; and
• 5 a schematic representation of a mobile app on a mobile device of a user of the cleaning device with the operation of the SmartStart function.

Identical or similar elements are provided with identical or similar reference symbols in the following figures and the following description, whereby a repeated description is omitted for reasons of brevity and clarity.

1 shows a schematic representation of a cleaning device 100 from the side, which is designed here as a dishwasher. The cleaning device 100 can, however, also be any other cleaning device which is intended for cleaning cleaning items 105. In the present case, for example, the cleaning items 105 are pieces of crockery which are in the 1 shown cups, pots, plates or pans. The cleaning items 105 are in a cleaning chamber 110 arranged in accordance with the 1 illustrated embodiment is formed by a dishwasher interior. The items to be cleaned or dishes are positioned in a dish basket 115 each, with a total of two dish baskets 115 usually being provided in a position one above the other in the cleaning chamber 110. In order to be able to clean the items to be cleaned 105, specifically the dishes here, a cleaning solution or water is pumped through several rotatable spray arms 120 so that the dishes are wetted with the cleaning solution or water according to a predetermined cleaning program so that, for example, dirt 125 can be removed or washed off the dishes as items to be cleaned 105.

However, it is conventionally assumed that a user of this cleaning device 100 decides independently after loading the individual dish baskets 115 whether the cleaning program should be started or not. For environmental reasons, consideration should be given to placing as many dishes or cleaning items 105 as possible in the baskets 115 or generally the cleaning chamber 110 in order to be able to use the resources required for a cleaning process, such as energy or cleaning agents, efficiently. If the user of the cleaning device 100 now wants to behave in a particularly environmentally friendly manner, he or she will be inclined not to start the cleaning program when the baskets 115 are loaded to a certain extent, in order to be able to put more dishes or cleaning items into these baskets 115 at a later point in time and thus be able to carry out a more efficient or environmentally friendly cleaning process. However, this can lead to the user forgetting to actually start the cleaning process at a later time and then possibly not having enough clean dishes or cleaned items 105 in stock at a later time. It is also conceivable that the user does not want to bother making an active decision about starting the cleaning program.

In order to increase the ease of use for a user of the cleaning device 100, it is now proposed that the cleaning program be started automatically depending on a parameter if this parameter fulfills a start criterion. For example, this parameter can be a loading level, which is a ratio of a number of items to be cleaned that are in principle possible in relation to the cleaning items or items 105 to be cleaned that are actually introduced into the cleaning chamber 110. This loading level thus represents a measure of the occupancy of the available spaces in the baskets 115. If, for example, a camera unit 130 captures an optical image of the interior of the cleaning chamber 110 and this is sent as a cleaning chamber signal 132 to a reading interface 135 of a control unit 140, the parameter P, which then represents the loading level of the baskets 115, can be extracted in this reading interface 135. This parameter P can then be fed to an output unit 145 of the control unit 140, in which it is recognized, for example, that this loading level represented by the parameter P is greater than a threshold value and thus a start criterion for the start of a specific cleaning program is present. This start of the cleaning program can then be initiated, for example, by issuing the start signal 150 to a 1 not shown motor control of the cleaning device 100, so that, for example, the above-mentioned cleaning liquids or water with a temperature corresponding to the selected cleaning program is pumped through the spray arms 120 at corresponding time intervals.

In order to achieve a particularly favorable and detailed image of the interior of the cleaning chamber 110, an interior lighting unit 155 can also be provided, which illuminates this interior of the cleaning chamber 110 by recording the optical image, so that the camera 130 can record a meaningful image.

2 shows a schematic representation of such an optical image 200, in which the individual cleaning items 105 are arranged in the cleaning chamber 110 of the cleaning device 100.

From such an optical image 200, the reading interface 135, as shown in the 1 shown, for example using an artificial intelligence method such as the use of a neural network or a machine learning algorithm, corresponding parameters P are determined, which are then used to output the start signal 150.

It is also conceivable that a type or kind of soiling 125 is determined from the optical image 200, for example which food residues in the form of sauce or vegetable pieces are adhering to the cleaning items 105 or whether these food residues have already dried and should therefore be soaked for longer, so that, for example, an alternative cleaning program to the standard cleaning program should be used. This means that, for example, by using the parameter P, a correspondingly favorable cleaning program can be selected and started using the start signal 150.

3 shows a flow chart of a method 300 for operating a cleaning device. The method 300 includes a step 310 of reading in a cleaning chamber signal 132, which represents the parameters of the cleaning chamber filled with items to be cleaned. Before this, the user should also carry out a sub-step 315 of loading the cleaning chamber and then, in a further sub-step 320, an optical image should be recorded by the camera, with the interior lighting advantageously being activated beforehand in order to obtain a sharp and high-contrast optical image, which is then read in as a cleaning chamber signal 132, for example. In a sub-step 325, an evaluation of the image data, here specifically the optical image from the cleaning chamber signal 132, can then take place. One or more parameters can be obtained, for example the degree of loading of the cleaning chamber, i.e. a ratio between actually occupied spaces for cleaning items in relation to basically available spaces for cleaning items, a type, amount and/or distribution of dirt on the cleaning items and/or information about the service life or storage time of several cleaning items in the cleaning chamber. The parameter P can now be determined from this information, but it can also include several sub-parameters.

In a subsequent step 330 of issuing a start signal 335, it can now be checked in a sub-step 340 whether the parameter P meets a specific start criterion. In the present case, for example, it can be determined whether a loading level as parameter P has reached a specific threshold and thus the cleaning program should be started automatically. In this case, a subsequent sub-step 350 can be carried out in a branch 345, in which a cleaning program to be activated is loaded or queried and then, in a sub-step 355, the start signal 335 is specifically sent to a 3 not shown motor control is output to pump the cleaning solution and/or water through the spray arms at a temperature and/or time interval selected according to the activated or selected cleaning program. In addition, a notification can optionally be issued to the user in a sub-step 360 that a rinse start or a start of the cleaning program has now been carried out automatically after the load limit has been reached.

In order to achieve the greatest possible convenience for the user of the cleaning device, it is also conceivable that both the start criterion and possibly the cleaning program to be activated can be set variably by the user. This can be done, for example, using a mobile device 365 in which a module or a mobile app is available to set corresponding change parameters, for example to change the start criterion or to preselect a cleaning program to be activated. It is conceivable, for example, that the user can use the mobile device 365 to set a load start limit as a start criterion so that the cleaning program is started automatically when 95 percent of the maximum available spaces for cleaning items are occupied. In addition or alternatively, it can also be entered that a program assistant is deactivated so that, for example, a preferred cleaning program is always started, for example an eco mode of the cleaning device. Furthermore, it can also be set whether step 360 is carried out, i.e. a corresponding notification is issued to the user.

However, if it is now recognized in sub-step 340 that the parameter P does not reach the start criterion, one or more pieces of information can be stored in an alternative branch 370 in a step 375, for example to store the current load level and/or a current time. This makes it possible to take this stored information into account in a subsequent execution of the steps or sub-steps 310, 315, 320 and/or 325, for example to determine the storage time or service life of one or more items to be cleaned in the cleaning chamber and, for example, to select an advantageous cleaning program accordingly, with which particularly well-dried dirt can be loosened or removed.

4 shows a flow chart of another embodiment of the method presented here for operating the cleaning device. In contrast to the 3 The method shown can be set, for example, via the mobile device 365, so that a program assistant is switched on so that, for example, the selection of the cleaning program to be started can be made depending on the parameter P, for example when it is detected, that heavily dried dirt adheres to the dishes or items being cleaned, making it necessary to soak these items for a longer period of time. However, it is also conceivable that the user, depending on the situation or settings regarding environmental protection aspects, would like to select certain cleaning programs to be started themselves and can make the appropriate selection using the program assistant.

5 shows a schematic representation of a mobile device 365, via which a user of the cleaning device can set verbal inputs or parameterizations for the operation of the cleaning device.

With the approach presented here, for example, procedural steps for starting a rinsing program after reaching a load level limit with a preferred rinsing program can be carried out automatically. However, procedural steps for starting a rinsing program after reaching a load level limit can also be carried out with the rinsing program assistant activated if the user prefers a specific cleaning program to be started.

The approach presented here can therefore be used to conveniently detect the load level. A user no longer needs to worry about the start-up process when using a dishwasher or his cleaning device in general. After each loading of the machine, he can devote himself to other pleasant things in everyday life. The starting point of the dishwasher can be individually specified by a load start limit. The input is made conveniently via the Miele app, e.g. on the smartphone. The invention has particular advantages if the cleaning device has an automatic dosing system with an integrated storage container that stores cleaning agents in an amount that is sufficient for a large number of cleaning programs. Such a system is used, for example, in the EP2798995B1 described.

Furthermore, load type detection can be used to select the washing program. The optimal washing program can be selected, for example, using load type detection. A user loads the dishwasher. The dishwasher is constantly checked to see which types of dishes have been loaded into it, and then the optimal washing program is automatically started once the load limit is reached.

Alternatively or in addition, further advantages of the approach presented here include the individual setting of the load start limit (e.g. via the app) and the selection of the preferred washing program. Fixed programs or the automatic selection of the washing program can be set here (washing program assistant).

Finally, the user can also contribute to sustainable dishwashing or cleaning. The dishwashing or cleaning process is only started when the dishwasher or cleaning device is fully loaded. The optimally selected program can also help to avoid having to wash dishes a second time or rinse them by hand at the sink.

The approach presented here can be used to accurately identify the dishes placed in the dishwasher in terms of quantity, type and soiling, so that the dishwasher can be started automatically or intelligently as a cleaning device. The automatic start (“SmartStart”) should be simplified, for example, by reaching a load level limit. The load level limit can be individually adjusted by the user (e.g. in percentages, load level levels, etc.). A favorite washing program can also be selected for this load start limit, e.g. the Eco program as a basic setting. Optionally, the washing program selection can be left to an assistant, e.g. the “SmartStart” function. This means that the camera automatically selects the optimal program based on the load objects. For this purpose, a washing or cleaning program is suggested and/or started depending on the type of load, for example using image analysis (machine learning methods or classic image processing, etc.). The image analysis to determine the load level takes place, for example, during the entire loading process (between two washing program sequences) and shortly before the start of the washing process. During the loading process, the time the load has been standing can also be taken into account when selecting the optimal washing program. This information can then be used together with the type of dishes and the degree of adhesion of the soiling to the dishes loaded (including soiling type detection) to suggest the optimal program. The entire evaluation and storage of the loading information takes place, for example, via the control electronics or the control unit and/or via a cloud environment connected via the Internet.

By using a camera in the dishwasher door, for example, an image of the dishwasher interior is taken every time the door is opened, the basket is loaded and/or the door is closed. taken. The captured image is evaluated in relation to the dishes loaded. In this evaluation, different information is added/saved to the image and the device control. This includes, for example, information on the type and quantity of the load (which types of dishes have been loaded and in which quantities), type of soiling (which types of soiling are on the dishes) and/or time of loading (when were these items loaded). For the example of determining the load limit, the quantity of dishes loaded is sufficient. The type, soiling and time are optional. Furthermore, an overall load level of the dishwasher can also be estimated each time. All of this information is used by the dishwasher for an automatic and intelligent start function, the "SmartStart". The user can program his dishwasher as usual with the wash planner (via mobile app or possibly via the display on the dishwasher). He can now specify the load start limit (instead of a start time) as the start trigger. To do this, he selects a favorite washing program or lets SmartStart select it using a program assistant.

For example, once the load start limit is reached (in the daily loading process), the dishwasher is started automatically. When selecting the program, the load information determined or evaluated at the beginning is used. Variants of the procedure presented help the user to operate the cleaning device, in this case the dishwasher, particularly conveniently.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• EP 2798995 B1 [0038]

Claims (14)

Method (300) for operating a cleaning device (100), the method (300) comprising the following steps: - reading (310) a cleaning chamber signal (132) which represents a parameter (P) of a cleaning chamber (110) equipped with items to be cleaned (105); and - outputting (330) a start signal (335) in response to the cleaning chamber signal (132) when the parameter (P) satisfies a predetermined start criterion in order to automatically start a cleaning program for cleaning the items to be cleaned (105) arranged in the cleaning chamber (110). Procedure (300) according to Claim 1 , in which in the step (310) of reading in, a filling level of cleaning items (105) in the cleaning chamber (110) and/or loading level of the cleaning chamber (110) is read in as a parameter (P). Method (300) according to one of the preceding claims, in which in the step (310) of reading in a change parameter for changing the start criterion and/or for changing a cleaning program to be started is read in, wherein in the step (330) of outputting the start signal (335) is output using the changed start criterion and/or for starting the changed cleaning program, in particular wherein the change parameter is read in by a mobile device (365) of a user of the cleaning device (100). Method (300) according to one of the preceding claims, in which in the step (310) of reading in an optical image (200) of the interior of the cleaning chamber (110) is read in, from which the parameter (P) is determined, in particular wherein the optical image (200) was recorded using an activated interior lighting (155) of the cleaning chamber (110). Method (300) according to one of the preceding claims, in which in the step (310) of reading in, a storage duration parameter is also read in, which represents a previous storage time of the cleaning item (105) in the cleaning chamber (110), wherein in the step (330) of outputting, the start signal (335) is output using the storage duration parameter. Method (300) according to one of the preceding claims, in which in the step (310) of reading in as a parameter (P) a type and/or a type of contamination of the cleaning item (105) arranged in the cleaning chamber (P) is determined. Method (300) according to one of the preceding claims, wherein in the outputting step (330) a cleaning program selected by a user as a function of the cleaning chamber signal (132) and/or a cleaning program is started with the start signal (335). Method (300) according to one of the preceding claims, wherein in the step (330) of outputting, the start signal (335) is not output and/or a suppression signal is output if the parameter (P) does not meet the start criterion in order to prevent a start of the cleaning program. Procedure (300) according to Claim 8 , with a step of storing (375) information about a state and/or a time of detection of the cleaning item (105) in the cleaning chamber if the parameter (P) has not fulfilled the start criterion, in particular wherein in a subsequent step (330) of outputting the start signal (335) is determined and output using the information. Method (300) according to one of the preceding claims, in which in the step (310) of reading the cleaning chamber signal (132) a parameter of a dishwasher interior filled with dishes to be cleaned is determined as a cleaning chamber (110). Control unit (140) which is designed to carry out the steps (310, 330) of the method (300) according to one of the preceding claims in corresponding units (135, 145). Computer program product with program code for carrying out the method (300) according to one of the preceding claims, when the computer program product is executed on a device or a control unit (140). Machine-readable storage medium on which the computer program is Claim 12 is stored. Cleaning device (100) with a cleaning chamber (110) and a control unit (140) according to Claim 11 .