Method and computer program for adjusting control of a vapour extraction device, and vapour extraction device

The method and computer program empower users to adjust extractor hood controls based on their specific needs by querying user perception post-installation, resulting in improved operational efficiency and user satisfaction.

WO2025132193A1PCT designated stage expired Publication Date: 2025-06-26BOSCH SIEMENS HAUSGERATE GMBH
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Patent Information

Application Number
PCT/EP2024/086535
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-12-21
Filing Date
2024-12-16
Publication Date
2025-06-26

AI Technical Summary

Technical Problem

Existing extractor hood systems require manual adjustments based on installer measurements or factory settings, failing to account for user-specific installation situations and preferences.

Method used

A method and computer program that allow users to participate in setting the control of the extractor device by initiating a dialogue post-installation to query user perception, enabling user-specific adjustments to operating levels and performance profiles.

Benefits of technology

Enables easy and user-specific adjustment of the extractor hood's control, ensuring optimal operation based on user preferences, reducing noise and improving extraction performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a method for adjusting control of a vapour extraction device in which at least one operating level is stored, the method being characterized in that the method involves, following installation of the vapour extraction device, the vapour extraction device being operated on a preselected operating level and a dialogue being initiated with the user of the vapour extraction device to check user perception. A computer program product and a vapour extraction device are also described.
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Description

[0001] Method and computer program for setting a control of an extractor device and extractor device

[0002] The present invention relates to a method and a computer program for setting a control of the extractor device and to an extractor device.

[0003] Extractor hoods, such as cooker hoods or downdraft extractors, generally require piping at the user's location in the kitchen where they are to be operated. This is especially true for extractor hoods, where the extracted and cleaned air is released from the room, and especially from the building, into the environment. Even with extractor hoods that operate in recirculation mode and where the extracted air is released into the room in which the extractor hood is operated after cleaning, the distance of the extractor hood's air outlet from a room wall or the room size, for example, varies from user to user.

[0004] Extractor hoods and downdraft extractors, particularly those used in kitchens, use blowers, also known as fans, to draw air from a hob or worktop into the extractor hood and clean it there. The extractor hood's fan typically has an electrically commutated motor (EC motor) that drives a fan impeller.

[0005] Thanks to electronic commutation, these motors can be easily controlled, or the control can be easily adjusted. In particular, the torque-speed characteristic, and thus also the displacement-pressure difference characteristic, can be precisely selected, and the motor can be controlled accordingly.

[0006] For each installation situation of the extractor, at least one system characteristic curve results. The intersection of the system characteristic curve with a flow rate-pressure difference characteristic curve of the extractor, in particular the fan, results in the operating point of the extractor. The operating point therefore defines the flow rate and the pressure difference that occurs during operation of the extractor. The flow rate-pressure difference characteristic curve is related to the torque-speed characteristic curve of the fan. Thus, the operating point varies from user to user depending on the installation situation. The characteristic curves can also be referred to as curves.

[0007] It is common practice to operate an extractor hood at different operating levels. As the operating level increases, the fan speed is generally increased, thus increasing the extraction volume. These operating levels are usually preset in the extractor hood, particularly in a control unit within the hood.

[0008] A disadvantage of the prior art is that the control of the extractor fan is adjusted based on measurements taken by installers and / or factory settings in the control unit.

[0009] The object of the present invention is therefore to provide a solution that allows the user of an extractor device to easily and user-specifically adjust the control.

[0010] The invention is based on the finding that this problem can be solved by allowing the user to participate in the determination of the settings during installation of the extractor hood.

[0011] According to a first aspect, the object is achieved by a method for adjusting the control of an extractor device having the features of claim 1.

[0012] The invention therefore relates to a method for setting a control system for an extractor hood in which at least one operating level is stored. The method is characterized in that, after the extractor hood has been installed, the extractor hood is operated in a preselected operating level and a dialogue is initiated with the user of the extractor hood to query user perception. An extractor hood, for example, is referred to as an extractor hood. The extractor hood is preferably controlled by a control unit, which can also be referred to as a control device and is preferably integrated into the extractor hood. In particular, the motor of a fan of the extractor hood is controlled via the control system.

[0013] The setting of the control refers in particular to the definition of parameters that are used to control the extractor fan.

[0014] At least one operating level is stored in the extractor device, for example, in the control unit or a memory unit of the extractor device. For the purposes of the invention, an operating level, also referred to below as a level, refers to a setting in which the fan of the extractor device is operated according to a characteristic curve of the fan. The characteristic curve can be one of a range of characteristic curves that can be referred to as a performance profile, as will be explained in more detail later.

[0015] According to the invention, in the method, after the installation of the extractor device, the extractor device is operated in a preselected operating level and a dialogue is initiated with the user of the extractor device to query user perception.

[0016] The installation of an extractor hood refers to the assembly and installation at the location of use, and, if necessary, the connection of the extractor hood to the piping at the location of use. The location of use is the user's kitchen. For an extractor hood, the location is above a cooktop. For a tabletop extractor, the location is below the cooktop.

[0017] The process steps for operating the extractor hood and the dialogue are performed after the extractor hood has been installed. This means, in particular, that the process steps are performed after the extractor hood has been assembled and connected, but before the extractor hood is first used for its intended purpose at a location. The intended use of the extractor hood is, in particular, the extraction of fumes and vapors generated by cooking on a hob. The process according to the invention can also be referred to as an installation routine.

[0018] The method according to the invention can be started by the user of the extractor device or automatically, for example when the extractor device is put into operation for the first time, in particular when the extractor device is switched on for the first time.

[0019] According to the method according to the invention, the extractor device is operated in a preselected operating mode. Preferably, the extractor device is operated in the preselected operating mode in a first step of the method. According to one embodiment, a preliminary check can be carried out prior to the first step regarding the piping at the installation site and / or the existing backpressure. The numbering of the steps of the method therefore serves only to identify the individual steps, although these can be carried out in a different order if necessary.

[0020] A preselected operating mode is specifically defined as an operating mode that is stored as selected in the control unit or a memory unit. This operating mode can be factory-selected in the control unit or memory unit or can be selected by the user.

[0021] In the method according to the invention, a dialog is initiated with the user of the extractor device to query user perception. This dialog can be initiated during or after operation of the extractor device in the preselected operating mode. The dialog with the user is conducted, in particular, by issuing one or more questions to the user and receiving answers from the user. Multiple answer options can be issued for one question. In particular, the answers can be processed and / or saved during the dialog.

[0022] The output of the questions, optionally with answer options, the receipt of the answers and the processing of the answers can take place in the extractor hood, in particular the control unit. Alternatively, it is also possible for these steps to be carried out at least partially by another device, such as a mobile phone, in particular by means of an app, or a server, which can also be referred to as a backend. In particular, the questions, optionally together with answer options, can be output via an app on a mobile phone and the user can enter the answer on the mobile phone. These answers can be transmitted to the extractor hood. In addition, it is also possible for the app or a server connected to it to evaluate the answers and transmit corresponding instructions, for example in the form of a configuration or settings package, to the extractor hood.For the sake of simplicity, the method is described below with reference to the embodiment in which the output of questions and, if applicable, answer options, the reception of answers, and the processing take place in or on the extractor hood. However, the invention is not limited to this embodiment.

[0023] Communication between the extractor device and the user preferably takes place via a communication unit of the extractor device. This can be a display / input unit on the extractor device or a communication unit for communication with a connected device, for example, a computer or a mobile device, for example, a mobile phone.

[0024] According to the invention, user perception refers to the perception the user experiences when operating the extractor hood. According to a preferred embodiment, the user perception relates to the noise emitted by the extractor hood, the extraction performance of the extractor hood, and / or the acceptability of the operation of the extractor hood in a particular operating mode.

[0025] The emitted noise can also be referred to as the noise level emitted by the extractor hood when it is in operation and which is therefore perceived by the user. The noise level is influenced by a number of factors. In particular, the noise level is influenced, for example, by the installation situation of the fan in the extractor hood and the installation situation of the extractor hood in the room in which it is operated. The installation situation is influenced, for example, by the piping, in particular its cross-section and / or length, as well as the relative distance of the extractor hood to a kitchen wall. Especially with smaller diameter pipes, the back pressure that the fan has to overcome is increased. The noise level is also influenced by the operating mode of the extractor hood.In particular, the noise level of a range hood operating in recirculation mode (recirculation hood) is generally higher than that of a range hood operating in exhaust mode (extraction hood). Recirculation hoods typically use odor filters through which air must flow, thereby increasing the backpressure that the fan must overcome.

[0026] Preferably, the question and / or the answer options are based on an assessment of user perception. For example, the answer options could be "too much," "too high," "too little," "too low," and / or "sufficient."

[0027] By initiating a dialogue with the user in the method according to the invention, in which the user's perception is queried, this can be taken into account when configuring the control system. This makes it easy to operate the extractor and ensure that it operates at an operating level acceptable to the user. In particular, the user does not need to have any special knowledge of the functional relationships of a fan, the piping, or the specific structural conditions at the installation site.

[0028] According to a preferred embodiment, performance profiles are stored in the extractor hood, each comprising at least one operating level. A performance profile is preferably referred to as a subdivision of the fan's characteristic curve field into ranges. The performance profile is also referred to simply as a profile below. The characteristic curve field preferably comprises characteristic curves from the lowest possible delivery volume to the largest possible delivery volume. The performance profile comprises at least two characteristic curves of the fan. With a characteristic curve field of 100 characteristic curves, in particular speed-torque characteristic curves, for example, three performance profiles can be provided, one of which can be referred to as the normal or "Normal" profile, another as the powerful or "Power" profile, and a third as the quiet or "Silent" profile. Within the performance profile, the fan can be operated in at least one operating level.Preferably, the operating level in the performance profile can be selected by the user.

[0029] According to one embodiment, the range of characteristic curves assigned to a performance profile can be formed by consecutive characteristic curves. For example, the range of a performance profile can comprise curves 1 to 33, the range of the next performance profile can comprise curves 34 to 66, and the range of the next performance profile can comprise curves 67 to 100. Within each range, i.e., performance profile, several operating levels, for example, five, can be defined. In the embodiment in which the performance profiles are formed by ranges with consecutive characteristic curves, the operating levels are preferably defined by consecutive sub-ranges within the range of a performance profile. For example, curves 1 to 8 can be assigned to the first operating level of the first performance profile. Alternatively, a characteristic curve from this range can be assigned to the operating level of the performance profile.

[0030] According to an alternative embodiment, the characteristic curves are assigned according to the operating levels of the respective performance profile. In this embodiment, the characteristic curve field can, for example, be divided into ranges assigned to a specific operating level. The characteristic curve can be selected from the range based on the performance profile. For example, a curve range of 1-8 can be stored for operating level 1, with curve 1 representing the first operating level of the "Silent" performance profile, curve 3 the first operating level of the "Normal" performance profile, and curve 5 the first operating level of the "Power" performance profile. In this embodiment, the curve of the operating level of a low performance profile is always smaller than the same operating level of a higher performance profile. The "Normal" profile can be a standard setting that compromises noise level and extraction power.The “Silent” profile can represent a mode with less noise at the expense of the displacement and the “Power” profile can represent a mode with a high displacement at the expense of noise.

[0031] By providing performance profiles, an operating mode for the extractor can be easily selected. Since each performance profile includes at least one operating level, the user can further adjust the operation of the extractor within each performance profile.

[0032] According to one embodiment, an operating level of a different performance profile than the performance profile of the preselected operating level is selected based on at least one user input in the dialog. In particular, an operating level in the performance profile can be selected that corresponds to the operating level in the performance profile of the preselected operating level. For example, with a preselected operating level, level 2 in the "Normal" profile, an operating level, level 2 in the "Power" profile or level 2 in the "Silent" profile, can be selected. Since the selection is made based on at least one user input in the dialog, the selected profile can take the user's preferences into account.The operating level of the corresponding profile selected in the dialog can be used during the dialog to operate the extractor device in this operating level and / or to be stored in the extractor device, in particular the control unit, for later use.

[0033] Preferably, after receiving a response and selecting an operating level in a different performance profile, the extractor device will be operated in the selected operating level and a further request will be issued to the user to confirm the selection.

[0034] According to one embodiment, questions asked in the dialog and the corresponding answers received from the user are stored in the extractor device. According to one embodiment, the question and the user answer are stored in conjunction with the performance profile selected and, in particular, confirmed based on the user answer.

[0035] According to one embodiment, the dialog includes issuing an instruction to the user. The instruction is preferably generated in the control unit and issued by the extractor device.

[0036] The instruction may, for example, comprise an instruction regarding a cooking activity. In particular, the user may be instructed to perform a cooking activity, such as boiling water. The cooking activity may change the ambient conditions of the extractor device, and the user may evaluate the extractor device in these changed ambient conditions. Preferably, after the user has been instructed to perform a cooking activity, the operating level of the extractor device is changed. This change may be performed automatically by the extractor device, in particular the control unit, or the user may be prompted by the extractor device to set the changed operating level.

[0037] According to a preferred embodiment, a suggestion for a performance profile to be set is issued to the user based on the stored answers and stored selected performance profiles. The performance profile to be set can also be referred to as a suitable performance profile. The suitable performance profile can be determined, for example, using a decision matrix in which the questions and answers from the dialog are stored.

[0038] According to one embodiment, based on the selection of a profile suggestion, the performance profile selected by the user is stored as a user start profile in the extractor device, in particular the control unit.

[0039] In a further embodiment of the method, at least one stored operating level is changed based on at least one user input in the dialog. A change to the stored operating level is preferably understood as a change to the fan characteristic curve assigned to the operating level. The change can therefore also be referred to as a characteristic curve correction or curve correction.

[0040] The user input that leads to a change in the operating level stored in the extractor fan is, in particular, a user input as to whether the fan curve stored for the operating level is appropriate for the user. If the user believes that more extraction is required, the curve is corrected upwards based on this response. If, on the other hand, the user believes that less extraction is sufficient, the curve is corrected downwards based on this response, i.e. a lower curve is selected. The correction is preferably made in steps of 1, either upwards or downwards. If the curve is deemed appropriate, it is retained for the operating level under review.

[0041] After adjusting the operating level, a further query can be sent to the user, based on which the curve can be further adjusted if necessary. Once the characteristic curve appropriate for the user has been set, it is saved for the operating level, specifically the level in the performance profile.

[0042] According to one embodiment, this characteristic curve correction can be performed for all operating levels in all performance profiles. The modified characteristic curve for each operating level in all performance profiles, if any, can be stored in a user profile. The reviewed and, if applicable, modified operating levels can also be referred to as user operating levels.

[0043] According to a preferred embodiment, each operating level, in particular each level of each performance profile, is assigned a range of characteristic curves stored in the extractor device, which limits the user input for changing the assignment of the characteristic curve to this operating level. This ensures that operating levels are defined within a performance profile.

[0044] According to a preferred embodiment, the dialogue with the user is conducted during the initial setup of the extractor device at a site. According to one embodiment, a check of the piping and / or the expected backpressure is performed before initiating the dialogue.

[0045] According to a further aspect, the invention relates to a computer program product comprising instructions that, when executed by the control unit of the extractor device, cause the control unit to execute the method according to the invention. The computer program can, in particular, be stored in the control unit of the extractor device.

[0046] According to a further aspect, the invention relates to an extractor device with at least one fan and a control unit. The extractor device is characterized in that the extractor device is designed to carry out the method according to the invention.

[0047] Advantages and features described with regard to the method and the computer program product apply - where applicable - to the extractor device and vice versa and are therefore described only once.

[0048] The extractor hood preferably has at least one input unit for user inputs. This input unit can, for example, be a touchpad or buttons on the extractor hood. Alternatively, the input unit can be a communication unit on the extractor hood that communicates with another device, such as a mobile phone, so that user inputs can be made on the other device and transmitted to the extractor hood.

[0049] According to a preferred embodiment, all characteristics of the fan of the extractor device are stored in the control unit of the extractor device.

[0050] The invention will be explained again below with reference to the accompanying figures. Figure 1 shows a schematic flow diagram of a first embodiment of the method according to the invention;

[0051] Figure 2: a schematic flow diagram of an embodiment of the determination of user preferences; and

[0052] Figure 3: a schematic flow diagram of a second embodiment of the method according to the invention; and

[0053] Figure 4: a schematic flow diagram of an embodiment of the determination of the curve of an operating stage.

[0054] Figure 1 schematically shows a first embodiment of the method according to the invention. In this embodiment, after the extractor fan has been installed at the installation site, an installation check, also referred to as an installation inspection, is performed. This allows the backpressure that may exist, for example, due to connected piping and obstacles such as room walls to be determined.

[0055] Subsequently, the user preferences are determined. One embodiment of the user preference determination process is shown schematically in Figure 2 and will be described in more detail later.

[0056] Based on the results of determining user preferences, a suitable performance profile, also referred to as a mode, is determined. For example, there are three profiles in which the fan, i.e., the blower, can be operated: Normal, Silent, and Power.

[0057] The appropriate performance profile is determined, for example, using a decision matrix. The decision matrix contains the user's answers to questions related to the profile suggestion, which takes the user's preferences into account. An example of a decision matrix, which can also be used in embodiments of the method according to the invention other than the embodiment shown in Figure 1, is shown below.

[0058] The profile suggestion determined based on user preferences can be output by the extractor device. For example, the profile suggestion can be displayed to the user. The user can then operate the extractor device with the suggested performance profile. This can be done, for example, by the user selecting the performance profile when starting operation of the extractor device. Alternatively or in addition to outputting the profile suggestion to the user, the relevant profile suggestion can be saved in the extractor device. In this case, the relevant suggested performance profile can be automatically used when starting operation of the extractor device. For this purpose, the relevant suggested profile can be saved as a start profile.In addition, although not shown in Figure 1, the suggested profile can also be stored in the extractor hood device and output to the user each time the extractor hood is started.

[0059] Figure 2 schematically shows an embodiment for determining user preferences. In the embodiment according to Figure 2, the installation check can be part of the process for determining user preferences. In this case, a preliminary installation check, as shown in Figure 1, is not necessary. If the preliminary installation check has already been performed, it can be omitted from the process for determining user preferences. After starting the determination process and, if applicable, after performing the installation check, the extractor hood, in the embodiment shown, starts operation at level 2 of the "Normal" performance profile. This can occur automatically, in particular by the extractor hood's control unit. Alternatively, a corresponding instruction can be issued to the user, who then selects the required level of the profile.During or after operation of the extractor at this level, a question is displayed asking the user how they perceive the noise level generated by the extractor at this level, specifically whether it is comfortable, too loud, or too low. For example, the question "How is the noise?" can be displayed with the answer options "too quiet," "comfortable," and "too loud."

[0060] Depending on the user's response, the extractor hood will start operating at level 2 in another of the performance profiles or will change to that level. If the user finds the operation too quiet, the extractor hood will start operating at level 2 of the "Power" performance profile or will change to that level. If the user finds the operation too loud, the extractor hood will start operating at level 2 of the "Silent" performance profile or will change to that level. If the user finds the operation pleasant, the extractor hood will start operating at level 2 of the "Normal" performance profile or will continue to operate at that level.

[0061] In a further step, the extractor fan will issue a request to boil water on the hob to which the extractor fan is assigned.

[0062] The extractor hood operation is then started at level 3 of the "Normal" performance profile or changed to this level. This can happen automatically, in particular by the extractor hood control unit. Alternatively, a corresponding instruction can be given to the user, who then selects the required profile level. During or after the extractor hood operation at this level, a question is asked to the user how they perceive the extraction performance generated by operating the extractor hood at this level, in particular whether this is comfortable, too high, or too low for the user. For example, the question "How is the extraction performance?" can be given with the answer options "too little," "good," and "too much."

[0063] Depending on the user's response, the extractor hood will start or change to level 3 in another of the performance profiles. If the user feels the extraction performance is too low during operation, the extractor hood will start or change to level 3 of the "Power" performance profile. If the user feels the extraction performance is too high during operation, the extractor hood will start or change to level 3 of the "Silent" performance profile. If the user feels the extraction performance is good during operation, the extractor hood will start or change to level 3 of the "Normal" performance profile.

[0064] Although not shown in Figure 2, after receiving the user's answer to the respective question and setting the profile corresponding to the answer, a corresponding query may be performed again to confirm the selection of the profile.

[0065] Figure 3 shows a second embodiment of the method according to the invention. As with the first embodiment of the method, an installation check can be performed after the extractor fan has been installed at the installation site.

[0066] After installation and, if applicable, the installation check, the second embodiment of the method according to the invention involves defining curves in the stages of the performance profiles. One embodiment of defining the curves is shown in Figure 4.

[0067] After starting the determination process, the first step is to start the operation of the extractor hood at level 1 in the "Silent" performance profile. Curve 2 is stored in the control unit for this level. In this embodiment, too, the operation of the extractor hood can be started automatically, in particular by the control unit of the extractor hood. Alternatively, a corresponding instruction can be issued to the user, who then selects the required level of the profile that accesses the stored curve. During or after operation of the extractor hood at this level with the stored curve, a question is issued to the user as to whether the level, in particular the extraction behavior, is acceptable to the user. The question can be answered with the options "less", "more", and "ok".

[0068] If the user perceives the extraction level to be too high during operation, the extractor hood's curve is reduced by one. If the user perceives the extraction level to be too low during operation, the extractor hood's curve is increased by one. After setting the desired curve, the extractor hood will display the question again, possibly with the answer options. These steps are repeated until the user answers "OK." In this case, the curve selected at that time is saved for level 1 of the "Silent" profile.

[0069] Although not shown, the query can also display only the answer options "less" and "more." In this embodiment, the curve currently used for level 1 of the "Silent" profile is saved if no response is entered by the user within a specified time.

[0070] In the next step, the extractor hood's operation is started or changed to level 2 in the "Silent" performance profile. Curve 12 is stored in the control unit for this level. During or after the extractor hood's operation at this level with the stored curve, a question is displayed, as in the first step. Depending on the answer, the curve is adjusted if necessary, and the selected curve is saved for level 2 of the "Silent" profile.

[0071] In further steps, corresponding to the first and second steps, a corresponding curve can be stored for each stage of each of the profiles. The second embodiment of the method according to Figure 3 can be carried out in addition to the first embodiment according to Figure 1. In this case, the method according to the second embodiment can also be carried out before the method of the first embodiment.

[0072] Details of an example of the second embodiment of the method are described below. All fan characteristics are provided and divided into sections in which a user can set their individual settings (levels 1, 2, 3, etc.).

[0073] For example, 100 characteristic curves are stored in ascending order (1 = lowest possible flow rate, 100 = highest possible flow rate). By default, the stages of each profile are located on a specific curve. The profiles themselves occupy a range of the total 100 curves; for example, the stages of the "Silent" profile encompass curves 1-33.

[0074] Stage 1 : Curve 2

[0075] Stage 2: Curve 10

[0076] Stage 3: Curve 15

[0077] Stage 4: Curve 20

[0078] Stage 5: Curve 30

[0079] After starting the setup wizard, i.e. the method according to the invention, the user can correct the specified curve for each level upwards or downwards via a suitable input option (control unit, app, voice, etc.) within defined limits such as: Level 1: Curves 1 - 8 Level 2: Curves 9 - 12 Level 3: Curves 13 - 18 Level 4: Curves 19 - 28 Level 5: Curves 29 - 33

[0080] Alternatively, the curves of a performance profile can be set for the corresponding performance profiles, for example based on the operating level, and can be changed by the customer if necessary within specified limits.

[0081] This is shown for example in the following table The curve assignment can be different for each extractor fan.

[0082] The present invention has a number of advantages.

[0083] The extractor can be operated at the location of use, i.e., the user's kitchen, in the manner desired by the user. The user can select the performance profile that best suits their needs.

[0084] In addition, the user can influence the fan's behavior in its environment. Finally, the relationship between extraction power and noise can be explained to the user. Furthermore, the user is given a largely free configuration of the fan speed settings, if desired.

Claims

Patent claims 1. Method for setting a control of an extractor device in which at least one operating level is stored, characterized in that in the method, after the installation of the extractor device, the extractor device is operated in a preselected operating level and a dialogue is initiated with the user of the extractor device to query user perception.

2. Method according to claim 1, wherein the user perception which is queried relates to the noise emitted by the extractor device and / or the extraction behavior of the extractor device.

3. Method according to one of claims 1 to 2, wherein performance profiles are stored in the extractor device, each comprising at least one operating stage.

4. The method according to claim 3, wherein an operating level of a different performance profile than the performance profile of the preselected operating level is selected based on at least one user input in the dialog.

5. The method of any one of claims 1 to 4, wherein the dialog comprises issuing an instruction to the user regarding a cooking activity.

6. Method according to one of claims 1 to 5, wherein questions asked in the dialogue and the associated received answers are stored in the extractor device.

7. Method according to claim 6, insofar as it relates to one of claims 2 to 5, wherein the questions and answers are each stored in connection with the performance profile selected by the answer.

8. The method according to claim 7, wherein a suggestion for a performance profile to be set is issued to the user based on the stored answers and stored selected performance profiles.

9. The method according to claim 8, wherein, based on the selection of a profile suggestion by the user, the selected performance profile is stored as the user start profile.

10. The method according to one of claims 1 to 9, wherein at least one stored operating level is changed based on the at least one user input in the dialog.

11. The method according to claim 10, wherein the change in the operating level represents a change in the characteristic curve of the fan associated with the operating level.

12. The method according to claim 11, wherein each operating stage is assigned a range of characteristic curves stored in the extractor device which limits the user input.

13. Method according to one of claims 1 to 12, wherein the dialogue with the user is carried out during the initial setup of the extractor device at a place of use.

14. Method according to one of claims 1 to 13, wherein a check of the piping and / or the expected back pressure is carried out before initiating the dialogue.

15. A computer program product comprising instructions which, when the program is executed by the control unit of the extractor device, cause the control unit to carry out the method according to one of claims 1 to 14.

16. Extractor hood device with at least one fan and a control unit, characterized in that the extractor hood device is designed to carry out the method according to one of claims 1 to 14.

17. Extractor hood device according to claim 16, wherein the extractor hood device has at least one input unit for user inputs.

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