Method for controlling a ventilation system, ventilation system and installation comprising such a ventilation system

Abstract

The present invention relates to a method for controlling a ventilation system (2), wherein the ventilation system (2) comprises an inlet (4) for receiving inlet air (5), a conditioning section (9) for conditioning the received inlet air (5), an outlet (6) for discharging outlet air (7), and a control device (8). The method comprises the following steps: defining a setpoint window for at least one air parameter of the outlet air (7), preferably by the control device (8); and controlling, by means of the control device (8), the conditioning of the inlet air (5) in the conditioning section (9) on the basis of said setpoint window. Furthermore, the present invention relates to a corresponding ventilation system (2) and to an installation (1) comprising such a ventilation system (2).

Description

[0001] New international patent application Dürr Systems AG 214924 PWO 29 October 2025

[0002] 1 / 39

[0003] METHOD FOR CONTROLLING A VENTILATION SYSTEM, VENTILATION SYSTEM AND SYSTEM WITH SUCH A VENTILATION SYSTEM

[0004] The present invention relates to a method for controlling a ventilation system. Furthermore, the present invention relates to a corresponding ventilation system and a system comprising such a ventilation system.

[0005] Such installations with a ventilation system and associated methods for controlling the ventilation system are known from the prior art. These installations, which can be designed particularly as industrial plants, regularly have a ventilation space to be ventilated by the ventilation system. The ventilation space can be, for example, an enclosed or a (partially) open space. Furthermore, any configuration and subdivision of the ventilation space is conceivable. For example, such an installation can be designed as a paint shop, with the ventilation space to be ventilated being an associated paint booth. In the present disclosure, the term "control" is understood to mean both control and regulation.

[0006] Ventilation systems typically have an inlet for drawing in fresh air, a conditioning section for conditioning the incoming air, and an outlet for delivering fresh air. The inlet air can be drawn from the ambient air, a recirculating air duct, or a secondary air duct within the ventilation system. The conditioning section usually includes a fan to draw in the fresh air through the inlet, pass it through the conditioning section, and finally deliver it as exhaust air at the outlet. Furthermore, the conditioning section typically incorporates various conditioning modules to condition the incoming air to a desired setpoint for one or more exhaust air parameters.For example, the conditioning section for conditioning the incoming air can include a heating device, a cooling device, a dehumidifying device, and / or a humidifying device. In this case, the temperature and / or humidity of the output air from the ventilation system can be adjusted.

[0007] Furthermore, ventilation systems regularly include a control device, such as a programmable logic controller (PLC), to control the conditioning of the incoming air in the conditioning section. A control strategy is typically defined and applied to control the conditioning process. This strategy describes which conditioning modules are used to adjust the incoming air to the desired setpoint for the corresponding air parameter of the outgoing air. (New international patent application)

[0008] Dürr Systems AG 214924 PWO October 29, 2025 2 / 39 is conditioned. For conditioning the incoming air to the desired setpoint, there is usually always an energy-efficient combination of conditioning modules used.

[0009] In industrial plants, particularly paint shops, it can be crucial to maintain specific maximum and minimum values ​​for the temperature and humidity of the outgoing air. For example, in paint booths, paint quality is only guaranteed under certain air conditions. Similarly, sufficient paint quality in paint mixing rooms requires specific air condition ranges. Even within the entire paint shop (building), the ambient air can indirectly influence the painting process, and therefore critical limits must not be exceeded. Furthermore, ventilation systems for personnel at workstations must ensure occupational safety and a comfortable working environment for the employees.

[0010] The respective maximum and minimum values, or limits, in this case for temperature and humidity, define a so-called alarm window for the ventilation system's control strategy. This window is individually set by the user via the control device for each ventilation system. The alarm window thus describes, for example, the conditions beyond which sufficient quality of the production process can no longer be guaranteed, production processes must be stopped, or employees must be removed from the work areas. Therefore, the desired setpoint for the temperature and humidity of the exhaust air must lie within the alarm window.

[0011] It is important to note that ventilation systems are subject to various influencing factors during operation, which can lead to control errors and thus deviations between the actual value and the setpoint. The most important influencing factor is the incoming air condition and its rate of change. High rates of change, such as during extreme weather events and sudden weather changes, can lead to control errors if the existing control strategy is no longer (temporarily) suitable for maintaining the desired setpoint. To prevent the actual value from exceeding the alarm window, the long-term setpoint for the temperature and humidity of the outgoing air is chosen as conservatively as possible, meaning it is positioned as close as possible to the middle of the alarm window and as far away from the respective limit values.This provides a sufficient buffer to the limits of the alarm window, or sufficient tolerance, so that any control errors do not affect the operation of the system. Currently, the desired setpoint is entered by the user at a terminal on the ventilation system. A disadvantage of this method is that incorrect entries can occur when entering the setpoint, increasing the risk of exceeding the alarm window. Furthermore, the conservative selection of the setpoint for the output air results in high energy consumption for the ventilation system. New international patent application.

[0012] Dürr Systems AG

[0013] 214924 PWO

[0014] October 29, 2025

[0015] 3 / 39

[0016] It is therefore an object of the present invention to provide a method for controlling a ventilation system that enables particularly reliable and energy-efficient operation of the ventilation system. Furthermore, it is an object of the present invention to provide a corresponding ventilation system and a system incorporating such a ventilation system.

[0017] The problem is solved by a method for controlling a ventilation system according to claim 1, a ventilation system according to claim 22, and a system according to claim 26. Advantageous embodiments are described in the dependent claims.

[0018] According to the present invention, a method for controlling a ventilation system is provided, wherein the ventilation system comprises an inlet for receiving incoming air, a conditioning section for conditioning the received incoming air, an outlet for discharging outgoing air, and a control device. The method comprises the following steps: defining a setpoint window for at least one air parameter of the outgoing air, preferably by the control device; and controlling the conditioning of the incoming air in the conditioning section based on the setpoint window by the control device. Advantageously, the setpoint window is defined with respect to an alarm window for the at least one air parameter of the outgoing air.

[0019] By automatically defining the setpoint window via the control device, potential user errors can be avoided. Furthermore, a particularly precise determination of the setpoint window is possible. In addition, using a setpoint window allows the control device to utilize a wider range (within the alarm window) for the control strategy to regulate the conditioning of the incoming air in the conditioning section. Specifically, the ultimately relevant operating point or setpoint for regulating the outgoing air can be selected flexibly and with exceptional energy efficiency, all within the setpoint window and without an increased risk of exceeding the alarm window.

[0020] The setpoint window is derived from the respective permissible maximum and minimum values ​​for at least one air parameter of the supply air. The following applies: The larger the setpoint window within the alarm window, the lower the energy consumption of the ventilation system. Conversely, the larger the setpoint window within the alarm window, the less buffer or tolerance exists for control errors, and thus the higher the risk of exceeding the alarm window. Against this background, the setpoint window can be defined in such a way as to save as much energy as possible (largest possible setpoint window) while simultaneously ensuring that the risk of exceeding the alarm window is sufficiently low for all expected situations and conditions (sufficiently small setpoint window). Overall, the ventilation system can thus be operated with exceptional reliability and energy efficiency. New international patent application.

[0021] Dürr Systems AG

[0022] 214924 PWO

[0023] October 29, 2025

[0024] 4 / 39

[0025] The at least one air parameter of the source air can include any parameter that defines a condition or property of the source air. Particularly preferably, the at least one air parameter of the source air includes several, preferably two, air parameters. In the case of a single air parameter of the source air, the setpoint window is one-dimensional. If, however, several air parameters of the source air are considered, the setpoint window can be correspondingly multi-dimensional. Furthermore, the various air parameters of the source air can influence each other, as is the case, for example, with temperature and humidity. Accordingly, the setpoint window can take on a wide variety of forms.

[0026] The term "control device" is to be understood broadly for the purposes of the present invention. For example, the control device may comprise several control units. In one example, the control device includes a first control unit and a second control unit. The first control unit performs the step of defining the setpoint window for at least one air parameter of the output air, and the second control unit performs the step of controlling the conditioning of the input air in the conditioning section. In this case, the first control unit can be configured, for example, as a computing unit such as a laptop or a PC. The second control unit, on the other hand, can be configured as a programmable logic controller (PLC). It is also conceivable, of course, that both the definition of the setpoint window and the control of the conditioning are performed by a single control unit or directly by the control device.With regard to controlling the conditioning process, the control device may also have further (decentralized) control units, such as various control or regulation units for the individual modules and / or conditioning modules of the conditioning section.

[0027] Advantageously, at least one air parameter of the source air has at least one of the following parameters: a temperature; a humidity; an aerosol content; and an air volume flow rate.

[0028] The temperature, humidity, aerosol content, and air volume flow rate of the supply air are particularly relevant parameters for the system or ventilation system and for conditioning the supply air in the conditioning section. The aerosol content can refer to any solid and / or liquid components in the air, such as pollutants, dust, etc. For conditioning the supply air with respect to the aerosol content, the conditioning section can include at least one filter device. Regarding the air volume flow rate, the conditioning section can, for example, include at least one fan to regulate the supply air volume. Advantageously, at least one supply air parameter includes temperature. Particularly preferably, at least one supply air parameter includes both temperature and humidity. (New international patent application)

[0029] Dürr Systems AG

[0030] 214924 PWO

[0031] October 29, 2025

[0032] 5 / 39

[0033] The latter results in a two-dimensional setpoint window for the output air, determined by the temperature and humidity.

[0034] Preferably, at least one operating parameter of the ventilation system and / or a system comprising the ventilation system is recorded and processed by the control device to determine the setpoint window.

[0035] By acquiring at least one operating parameter of the ventilation system and / or the system comprising the ventilation system, the control device can consider as much relevant data and information as possible for defining the setpoint range. For this purpose, the control device can be designed to communicate with other internal and / or external devices or services of the ventilation system. For example, the at least one operating parameter is acquired via a measuring device, and / or a control device, and / or an online service, and / or a database. The acquired at least one operating parameter can be processed by the control device in any form to define the setpoint range for the at least one air parameter of the supply air. One possible further processing method is, for example, a risk assessment based on the at least one operating parameter.Advantageously, at least one operating parameter is recorded for a specific point in time and / or a specific time interval. This allows a temporal relationship to be established for at least one operating parameter. Furthermore, corresponding time series can be created or recorded. Overall, the setpoint range can be defined as wide as possible and sufficiently narrow to ensure reliable and energy-efficient operation of the ventilation system.

[0036] The term "operating parameter" is to be understood broadly in the context of the present invention. Thus, the operating parameter can refer to any parameter that is relevant to the operation of the ventilation system or the system comprising the ventilation system.

[0037] Advantageously, at least one operating parameter has at least one current, and / or predicted, and / or historical parameter.

[0038] Considering current parameters has the advantage that they can be recorded particularly accurately and easily. Furthermore, current parameters provide reliable information about a specific current state. Using predicted parameters, on the other hand, it is possible to more accurately record and evaluate certain states and conditions in the future. Historical parameters allow for the consideration of past experience. Moreover, these can be easily recorded via a memory or database. Ultimately, the target value range can be defined with particular precision for reliable and energy-efficient operation of the ventilation system. New international patent application.

[0039] Dürr Systems AG

[0040] 214924 PWO

[0041] October 29, 2025

[0042] 6 / 39

[0043] Preferably, the at least one operating parameter includes at least one air parameter of the inlet air at the inlet and / or at least one operating mode.

[0044] The term "operating mode" is to be understood broadly in the context of the present invention. Thus, any operating mode of the ventilation system and / or the system comprising the ventilation system can be considered or recorded. For example, the ventilation system could be in standby mode, normal operating mode, or ECO mode. With regard to the system comprising the ventilation system, there could be, for example, a shutdown mode, standby mode, normal operating mode, production mode, cleaning mode, maintenance mode, etc. Overall, the setpoint range can be optimally defined for reliable and energy-efficient operation of the ventilation system.

[0045] The at least one air parameter of the incoming air at the inlet can comprise any parameter that defines a condition or property of the incoming air at the inlet. Preferably, the at least one air parameter of the incoming air at the inlet includes several, preferably two, air parameters.

[0046] Preferably, the at least one air parameter of the inlet air and the at least one air parameter of the outlet air have at least one identical parameter type.

[0047] Because at least one air parameter of the incoming air at the inlet and at least one air parameter of the outgoing air have at least one identical parameter type, the setpoint window for the at least one air parameter of the outgoing air can be determined particularly precisely by the control device for a reliable and energy-efficient operation of the ventilation system.

[0048] Advantageously, the at least one operating parameter comprises at least one of the following parameters: a current, and / or predicted, and / or historical temperature of the inlet air at the inlet; a current, and / or predicted, and / or historical humidity of the inlet air at the inlet; a current, and / or predicted, and / or historical aerosol content of the inlet air at the inlet; a current, and / or predicted, and / or historical operating mode of the ventilation system; and a current, and / or predicted, and / or historical operating mode of a system comprising the ventilation system. New international patent application

[0049] Dürr Systems AG

[0050] 214924 PWO

[0051] October 29, 2025

[0052] 7 / 39

[0053] The above statements regarding the parameter types temperature, humidity, aerosol concentration, and operating mode apply accordingly. Overall, the setpoint range can be optimally defined for reliable and energy-efficient operation of the ventilation system.

[0054] To further define the setpoint window for at least one air parameter of the output air, a feature extraction based on at least one operating parameter is performed by the control device.

[0055] Feature extraction allows the control device to extract particularly relevant features from at least one operating parameter for defining the setpoint range for at least one air parameter of the outlet air. If the at least one operating parameter relates to an air parameter of the inlet air at the ventilation system's inlet, for example, a corresponding minimum and / or maximum value (extreme values) within a specific time interval can be used as a relevant feature for defining the setpoint range. Another example is the rate of change of the at least one operating parameter. If the at least one operating parameter relates to an operating mode, for example, the type of operating mode, the duration of the operating mode, and / or the number of changes in the operating mode can be extracted as a particularly relevant feature.Overall, the setpoint window can be defined particularly precisely for reliable and energy-efficient operation of the ventilation system.

[0056] Preferably, a risk assessment is performed to determine the setpoint window, wherein the risk assessment is preferably based on at least one operating parameter, and / or historical data, and / or climate data. Advantageously, the risk assessment determines the risk of a control error and / or of exceeding an alarm window for at least one air parameter of the output air.

[0057] Risk assessment makes it possible to estimate the risk of a control error or exceeding the alarm window. This step allows for the identification and definition of an optimal setpoint window, ensuring reliable and energy-efficient operation of the ventilation system. Specifically, the setpoint window can be chosen to be as wide as possible and sufficiently narrow.

[0058] The historical data can, for example, relate to the control of the ventilation system. Thus, historical data allows for the consideration of empirical values ​​regarding previously defined setpoint ranges and corresponding parameters for risk assessment. Accordingly, the historical data includes, for example, at least one historical setpoint range for at least one air parameter of the supply air, and / or at least one historical operating parameter of the ventilation system and / or a system comprising the ventilation system, and / or at least one historical actual value relating to the ventilation system and / or a new international patent application.

[0059] Dürr Systems AG

[0060] 214924 PWO

[0061] October 29, 2025

[0062] 8 / 39

[0063] The system includes a ventilation unit. The at least one historical actual value includes, for example, a historical actual value for at least one operating parameter of the ventilation system and / or a system comprising the ventilation system, and / or at least one air parameter of the output air, and / or a consumption value of the conditioning section, and / or a quality parameter relating to a system comprising the ventilation system. In one embodiment, a setpoint-actual value comparison is performed based on the historical data in order to identify possible deviations or control errors that may have occurred in the past and to take them into account for risk assessment.

[0064] The climate data can relate to all climatic conditions relevant to controlling the ventilation system. Advantageously, the climate data includes at least one climate table. This climate data, or at least one climate table, can refer to a season relevant for defining the setpoint window and / or to a specific location of the ventilation system and / or a system incorporating the ventilation system. Overall, this allows the setpoint window to be defined with particular precision for reliable and energy-efficient operation of the ventilation system.

[0065] Preferably, the control behavior of the ventilation system and / or the quality of at least one operating parameter is evaluated for risk assessment.

[0066] The control behavior of the ventilation system and the accuracy of at least one operating parameter are particularly relevant factors for risk assessment. Regarding the control behavior and the measured at least one air parameter of the incoming air at the inlet, certain control strategies for managing the conditioning section (using specific modules) are inherently associated with an increased risk of a control error or exceeding the alarm window. Another example is the potentially necessary change of the control strategy. Large rates of change in at least one air parameter of the incoming air at the inlet can also represent an increased risk. With respect to the operating mode of the ventilation system, different operating modes may have different requirements for the accuracy of the air conditioner.For example, there is a high risk before or during planned production times, while there is no risk or a very manageable risk during longer production breaks.

[0067] Regarding the quality of at least one operating parameter, the following applies: The lower the quality of the at least one operating parameter, the higher the risk of a control error or of exceeding the alarm window. If the at least one operating parameter relates to an air parameter of the incoming air at the inlet and this is measured by a measuring device, such as a weather station, the distance of the measuring device to the inlet of the ventilation system can, for example, be used as an evaluation criterion: New international patent application

[0068] Dürr Systems AG

[0069] 214924 PWO

[0070] October 29, 2025

[0071] 9 / 39

[0072] In the case of a large distance, there is an increased risk; at a short distance, the risk is correspondingly lower. The general reliability of a particular weather forecasting service can also be taken into account if it is used to measure the air quality parameter. In one embodiment, a corresponding risk factor is created based on the risk assessment and further processed to define the target value range for at least one air quality parameter of the supply air. Overall, the target value range can be optimally defined for reliable and energy-efficient operation of the ventilation system.

[0073] Furthermore, the control device incorporates artificial intelligence, whereby the setting of the target value range is at least partially performed by the artificial intelligence. Advantageously, the risk assessment is also at least partially performed by the artificial intelligence.

[0074] Artificial intelligence enables the control device to perform risk assessments with exceptional efficiency and accuracy. Specifically, the continuously learning AI can accumulate empirical data over time for defining the setpoint range and controlling the ventilation system, thereby continuously improving the risk assessment. For example, the AI ​​can analyze historical data related to ventilation system operation and adjust the risk assessment accordingly. Overall, this allows the setpoint range to be defined with exceptional precision, ensuring reliable and energy-efficient operation of the ventilation system.

[0075] Preferably, the ventilation system has an operating device, wherein at least one suggested setpoint window is calculated by the control device based on the risk assessment, at least one suggested setpoint window is displayed via the operating device, and at least one user input at the operating device relating to the at least one suggested setpoint window is captured and processed by the control device, wherein information relating to an associated risk and / or an associated energy consumption is preferably also displayed with the display of the at least one suggested setpoint window. Advantageously, several suggested setpoint windows are calculated by the control device and displayed via the operating device.

[0076] Using the control device, a user can influence the setting of the setpoint window and thus the control process. In one embodiment, a suggested setpoint window is displayed to the user via the control device. The user can then adjust and / or confirm the suggested setpoint window, for example, by manual input. It would be conceivable for the user to adjust the size of the setpoint window. Here again, the following applies: the larger the setpoint window, the lower the energy consumption of the ventilation system. However, it is equally true that the larger the setpoint window, the higher the risk of exceeding the setpoint window. In one embodiment, the user is shown several new international patent applications.

[0077] Dürr Systems AG 214924 PWO October 29, 2025

[0078] 10 / 39

[0079] Several suggested setpoint windows are displayed, allowing the user to manually select (and confirm) one of the suggested windows. The operating device includes, for example, a screen to display at least one suggested setpoint window and an input device for entering the user input. Alternatively, a touchscreen or touchscreen PC could be used. Overall, the setpoint window can be optimally defined for reliable and energy-efficient operation of the ventilation system.

[0080] Advantageously, the step of setting the setpoint window is repeated to obtain an updated setpoint window, so that the conditioning of the incoming air in the conditioning section is controlled based on the updated setpoint window.

[0081] By repeatedly defining the setpoint window, the control device can use an updated setpoint window to control the conditioning of the incoming air in the conditioning section. This repeated definition can be performed iteratively at fixed time intervals or dynamically. Therefore, the setpoint window no longer needs to be designed to cover all possible situations in the long term, and the control device can move away from its previous, consistently conservative approach to defining the setpoint window. Ultimately, shorter time intervals with more current operating parameters or risk assessments can now be considered. Overall, the setpoint window can be optimally defined for reliable and energy-efficient operation of the ventilation system. The defined time intervals do not need to be constant.For example, changing the target value window can lengthen or shorten the next time interval.

[0082] Preferably, the setpoint window is continuously or stepwise switched to the updated setpoint window by the control device over a defined period, so that the conditioning of the incoming air in the conditioning section is controlled accordingly over the defined period.

[0083] By gradually or stepwise adjusting the setpoint window to the updated setpoint window over a defined period, this adjustment can be made slowly, avoiding abrupt changes. This significantly reduces the risk of oscillations in the ventilation system. Overall, the setpoint window can be optimally defined for reliable and energy-efficient operation of the ventilation system.

[0084] Preferably, the method comprises the following step: acquiring at least one actual value by the control device for at least one of: the at least one operating parameter; the at least one air parameter of the output air; a consumption of the conditioning section; and New international patent application

[0085] Dürr Systems AG

[0086] 214924 PWO

[0087] October 29, 2025

[0088] 1 1 / 39 a quality parameter relating to a system comprising the ventilation system, wherein the at least one actual value is processed by the control device for risk assessment. Advantageously, the risk assessment is adjusted by the control device based on the at least one actual value.

[0089] By capturing at least one actual value, it can be processed and compared with the calculations of the control devices to define the target value range. In particular, it is possible to consider the at least one actual value to improve or adjust the risk assessment. This allows for continuous improvement of the risk assessment and even more precise definition of the target value range. Advantageously, the at least one actual value is processed by artificial intelligence within the control device to adjust the risk assessment. The consumption of the conditioning section can refer to any media consumption, such as energy and / or water consumption. The quality parameter describes, for example, the quality of a workpiece to be produced. Thus, in the event of unacceptable quality, the alarm window can also be adjusted accordingly by the control device.Overall, the setpoint range can be optimally determined for reliable and energy-efficient operation of the ventilation system.

[0090] Advantageously, a primary actual value range surrounds the setpoint window, wherein an actual value of the incoming air parameter is determined to control the conditioning of the incoming air. This actual value is manipulated into a first manipulated actual value if it lies within the primary actual value range, and the first manipulated actual value is used by the control device to control the conditioning of the incoming air, such that the incoming air is conditioned to a setpoint within the setpoint window based on the first manipulated actual value. Preferably, the conditioning section includes at least one conditioning module for one type of conditioning, wherein the primary actual value range is determined by the control device depending on the type of incoming air conditioning.

[0091] This further development of the method is particularly advantageous, for example, for temperature and humidity control. The setpoint range is defined for the temperature and (relative) humidity of the output air. For the present invention, the (primary) actual value range represents a kind of operating range for the at least one conditioning module of the conditioning section, within which a control task is to be performed when the actual air parameter value lies within this range. Furthermore, the term "surrounding" is to be understood broadly with regard to the (primary) actual value range. For example, the (primary) actual value range can be adjacent to the setpoint range or be separated from it. Moreover, the (primary) actual value range does not have to completely surround the setpoint range, and partial surrounding of the setpoint range is also conceivable.The determination of the actual air parameter value should also be understood broadly. Accordingly, this includes both measurement and calculation (using measured values). New international patent application Dürr Systems AG 214924 PWO 29 October 2025.

[0092] 12 / 39

[0093] The term "manipulation" of the actual air parameter value is conceivable. In the present disclosure, "manipulation" is understood to mean the deliberate influencing or falsification of the determined actual air parameter value in order to, for example, take into account further and / or other factors relating to the control strategy and / or the conditioning of the incoming air. For example, a different controlled variable (deviating from the fundamentally defined control variable) and / or a different setpoint (deviating from the fundamentally defined setpoint) of the at least one conditioning module of the conditioning section can be taken into account. Simply smoothing the actual air parameter value, such as rounding up or down, or adjusting it to reduce measurement errors, therefore does not constitute manipulation within the meaning of the present invention. Similarly, simply converting to a different parameter type is not to be understood as manipulation.It should also be noted that the expression "within the target value window" also includes the edges of the target value window.

[0094] By manipulating the determined actual value of the air parameter, it is possible to consider further and / or different factors for the primary actual value range with regard to the control strategy and / or the conditioning of the incoming air, without changing or switching the fundamentally defined control sequences with regard to the at least one conditioning module of the conditioning section. For example, a different controlled variable (with a different actual value and setpoint for the air parameter) can be considered for the primary actual value range than the controlled variable that is fundamentally intended and defined for the at least one conditioning module of the conditioning section.Furthermore, it is possible to consider a different setpoint (within the setpoint window) for the fundamentally defined control variable of at least one conditioning module of the conditioning section. Ultimately, however, the fundamentally defined control variable and / or the fundamentally defined setpoint for controlling the at least one conditioning module of the conditioning section is not changed; instead, only the actual air parameter value is manipulated accordingly (into a first manipulated actual air parameter value). This allows the at least one conditioning module of the conditioning section to continue to be controlled based on the fundamentally defined control variable and the fundamentally defined setpoint window or setpoint.Ultimately, switching the control device to other controlled variables and / or setpoints, or to other control devices within the primary actual value range, is prevented. This is particularly advantageous when several actual value ranges with different controlled variables or setpoints are provided for a finer subdivision of the control tasks of the at least one conditioning module of the conditioning section. Overall, this results in smoother, more robust, and more energy-efficient control behavior.

[0095] Preferably, the actual air parameter value and the first manipulated actual air parameter value have an identical parameter type with a different value. New international patent application Dürr Systems AG 214924 PWO October 29, 2025

[0096] 13 / 39

[0097] By manipulating the value while maintaining a constant parameter type, it is possible to continue controlling at least one conditioning module of the conditioning section based on the fundamentally defined controlled variable and the fundamentally defined setpoint. Overall, this results in smoother, more robust, and more energy-efficient control behavior.

[0098] Preferably, the actual air parameter value, and / or the first manipulated actual air parameter value, and / or the setpoint value includes a temperature value and / or a humidity value and / or an enthalpy value.

[0099] The method according to the invention is particularly advantageous for temperature and humidity control. In this case, the temperature values ​​and / or the humidity values ​​and / or the enthalpy values ​​are particularly relevant factors for carrying out the method.

[0100] Advantageously, a secondary actual value range surrounds the setpoint window, wherein the primary actual value range differs from the secondary actual value range, the air parameter actual value is used directly by the control device to control the conditioning of the incoming air, so that the incoming air is conditioned to a setpoint within the setpoint window based on the air parameter actual value when the air parameter actual value is in the secondary actual value range, or wherein the air parameter actual value is manipulated into a second manipulated air parameter actual value when the air parameter actual value is in the secondary actual value range, and the second manipulated air parameter actual value is used by the control device to control the conditioning of the incoming air, so that the incoming air is conditioned to a setpoint within the setpoint window based on the second manipulated air parameter actual value.

[0101] By providing a secondary actual value range or multiple actual value ranges, a finer subdivision of the control tasks of the at least one conditioning module of the conditioning section can be achieved without having to switch between different control devices or within the control device with respect to controlled variables or setpoints. Insofar as the air parameter actual value is used directly by the control device in the secondary actual value range, the fundamentally defined controlled variable and the fundamentally defined setpoint remain authoritative. No manipulation is necessary, and all control processes with respect to the at least one conditioning module of the conditioning section can be carried out as usual. The term "direct use" is intended to exclude any manipulation as defined above.For example, even adjustments made to reduce measurement errors and simple rounding up or down still constitute direct use of the actual air parameter value. Insofar as the actual air parameter value is manipulated into a second, manipulated actual air parameter value in the secondary actual value range, the above statements regarding the primary actual value range and the new international patent application apply.

[0102] Dürr Systems AG

[0103] 214924 PWO

[0104] October 29, 2025

[0105] 14 / 39 corresponds to the first manipulated air parameter actual value. Overall, a less oscillating, more robust and more energy-efficient control behavior is achieved.

[0106] Preferably, the conditioning section has at least two conditioning modules, each for a type of conditioning, wherein the primary actual value range and the secondary actual value range are determined by the control device depending on the type of conditioning of the incoming air.

[0107] This further development of the method makes it possible to define a separate primary and secondary actual value range for each conditioning module or type of conditioning. In the case of temperature and humidity control, the conditioning section includes, for example, a heating device, and / or a cooling device, and / or a humidifying device, and / or a dehumidifying device. Thus, each of these conditioning modules can be subdivided into different control task areas, taking the overall control strategy into account. Preferably, the dehumidifying device is configured as a heating device or a reheating device.

[0108] Preferably, the actual air parameter value and the second manipulated actual air parameter value have an identical parameter type with a different value.

[0109] The above statements regarding the first manipulated actual value of an air parameter apply accordingly to the second manipulated actual value of an air parameter. By manipulating the value while maintaining the same parameter type, it is possible to continue controlling at least one conditioning module, or the conditioning modules of the conditioning section, based on the fundamentally defined control variable and the fundamentally defined setpoint. Overall, this results in smoother, more robust, and more energy-efficient control behavior.

[0110] Preferably, the second manipulated air parameter actual value includes a temperature value and / or a humidity value and / or an enthalpy value.

[0111] The method according to the invention is particularly advantageous for temperature and humidity control. In this case, the temperature values ​​and / or the humidity values ​​and / or the enthalpy values ​​are particularly relevant factors for carrying out the method.

[0112] According to the present invention, a ventilation system comprises an inlet for drawing in air; a conditioning section for conditioning the drawn in air; an outlet for discharging air; and a control device. The control device is configured to perform the method described above. New international patent application

[0113] Dürr Systems AG

[0114] 214924 PWO

[0115] October 29, 2025

[0116] 15 / 39

[0117] The advantages described in connection with the method for controlling a ventilation system apply accordingly to the ventilation system designed for this purpose. Ultimately, a ventilation system is provided that can be operated particularly reliably and energy-efficiently.

[0118] Preferably, the conditioning section has at least one conditioning module for one type of conditioning, preferably at least two conditioning modules, each for one type of conditioning.

[0119] Preferably, the conditioning section comprises a filter device, and / or a cooling device, and / or a heating device, and / or a dehumidification device, and / or a humidification device, and / or a fan, and / or a heat recovery device. Preferably, the dehumidification device is configured as a heating device or reheating device.

[0120] The advantages described in connection with the method for controlling a ventilation system apply accordingly to the ventilation system designed for this purpose. The various conditioning modules enable the conditioning of the incoming air in the conditioning section. Furthermore, the fan ensures the necessary airflow through the ventilation system. In addition, the heat recovery device allows for further energy savings. Ultimately, a ventilation system is provided that can be operated with exceptional reliability and energy efficiency.

[0121] Advantageously, the ventilation system has a control device for displaying information and / or entering user input.

[0122] The advantages described in connection with the method for controlling a ventilation system apply accordingly to the ventilation system designed for this purpose. Using the control device, a user can manually influence the control of the ventilation system, specifically by setting the setpoint range for at least one air parameter of the supply air, and optimize it according to their preferences. Ultimately, this results in a ventilation system that can be operated with exceptional reliability and energy efficiency.

[0123] According to the present invention, a system comprises the ventilation system described above and a ventilation room to be ventilated by the ventilation system. Preferably, the system is a paint shop and / or the ventilation room is a production room, a storage room, a paint mixing room, or a paint booth. New international patent application

[0124] Dürr Systems AG

[0125] 214924 PWO

[0126] October 29, 2025

[0127] 16 / 39

[0128] The advantages described in connection with the ventilation system also apply to the system incorporating the ventilation system. This results in a system that can be operated particularly reliably and energy-efficiently.

[0129] Overall, the present invention provides a reliable and energy-efficient method for controlling a ventilation system. The same advantages are observed for the ventilation system according to the invention and for the system comprising the ventilation system according to the invention.

[0130] Advantageous embodiments of the present invention will now be described schematically with reference to figures, wherein

[0131] Fig. 1 shows a schematic representation of a system with a ventilation system according to an embodiment of the present invention;

[0132] Fig. 2 shows a schematic representation of a functional structure of a ventilation system according to a first embodiment of the present invention;

[0133] Fig. 3 shows an hx diagram with a setpoint window and an alarm window;

[0134] Fig. 4 shows a flowchart for a method for controlling a ventilation system according to a

[0135] An embodiment of the present invention is shown;

[0136] Fig. 5 shows an hx diagram with divided zones;

[0137] Fig. 6 shows an hx diagram with different setpoint windows;

[0138] Fig. 7 shows a schematic representation of a functional structure of a ventilation system according to a second embodiment of the present invention;

[0139] Fig. 8 shows an hx diagram with a setpoint window for the ventilation system shown in Fig. 7;

[0140] Fig. 9 shows an hx diagram with the setpoint window of Fig. 8 and an actual value range for a function described as

[0141] Heating device shows trained conditioning module;

[0142] Fig. 10 shows an hx diagram with the setpoint window of Fig. 8 and actual value ranges for a conditioning module designed as a cooling device;

[0143] Fig. 11 shows an hx diagram with the setpoint window of Fig. 8 and actual value ranges for a function described as

[0144] humidification device, conditioning module shown; and New international patent application

[0145] Dürr Systems AG 214924 PWO October 29, 2025

[0146] 17 / 39

[0147] Fig. 12 shows an hx diagram with the setpoint window of Fig. 8 and actual value ranges for a conditioning module designed as a dehumidification device.

[0148] Identical components in the different embodiments are identified with the same reference numerals.

[0149] Figure 1 schematically illustrates the structure of a system 1 with a ventilation system 2. In this embodiment, the system 1 is configured as a paint booth. The system 1 includes a ventilation chamber 3, which is supplied with conditioned air via the ventilation system 2. In this embodiment, the ventilation chamber 3 is a paint booth. For the ventilation of the ventilation chamber 3, the ventilation system 2 has an inlet 4 through which inlet air 5 is drawn into the ventilation system 2. Within the ventilation system 2, the inlet air 5 is conditioned and discharged as outlet air 7 into the ventilation chamber 2 via the outlet 6.

[0150] The schematic structure of the ventilation system 2 according to a first embodiment is shown in Fig. 2. The ventilation system 2 comprises a control device 8, an operating device 17, and a conditioning section 9 arranged between the inlet 4 and the outlet 6. The operating device 17 is designed as a touchscreen PC. The conditioning section 9 comprises a plurality of modules 10, 11, 15, and conditioning modules 12 to 14, namely a heat recovery device 10, a first filter device 11, a cooling device 12, a heating device 13, a combined humidification and dehumidification device 14, a second filter device 15, and a fan 16.The fan 16 is designed to generate an airflow between the inlet 4 and the outlet 6, such that the inlet air 5 is drawn in through the inlet 4, passed through the conditioning section 9 for conditioning, and discharged through the outlet 6 as outlet air 7. It should be noted that the arrangement of the individual conditioning modules 12 to 14 does not necessarily have to be as shown in Fig. 2. It is also conceivable that a separate dehumidification device and a separate humidification device are provided. Furthermore, individual conditioning modules can be omitted as required, for example, the cooling device 12, if the ventilation system 2 is operated in an area or region where the temperature of the inlet air 5 is always lower than the temperature of the outlet air 7.

[0151] The control device 8 is designed to control the ventilation system 2 such that the inlet air 5 is drawn in, conditioned in the conditioning section 9, and discharged again as outlet air 7, as described in more detail below. For this purpose, a setpoint window 100 (see also Fig. 4) for at least one air parameter of the outlet air 7 is defined via the control device 8. The setpoint window 100 is a kind of range within which the at least one air parameter of the outlet air 7 must lie in order to achieve the desired air quality. - New international patent application

[0152] Dürr Systems AG 214924 PWO October 29, 2025

[0153] 18 / 39 quality in the ventilation room 3. In the embodiment considered here, the at least one air parameter of the outlet air 7 comprises the temperature of the outlet air 7 and the humidity of the outlet air 7. Thus, the control device 8 controls the ventilation system 2 so that the temperature and humidity of the outlet air 7 are within the desired setpoint range 100. Of course, other air parameters of the outlet air 7 can also be taken into account, for example, the aerosol content and / or the air volume flow. It would also be conceivable to consider only one of the aforementioned air parameters of the outlet air 7 for the setpoint range 100. In the embodiment described below, the temperature and humidity of the outlet air 7 are discussed as an example.

[0154] The control device 8 is designed to dynamically select setpoint window 100 within a predefined alarm window 101, taking into account the risk of control errors, i.e., deviations between the actual conditions in the ventilation chamber 3 and the desired setpoints. Fig. 3 is a simplified section of an hx or Mollier diagram showing a setpoint window 100 as a sub-area of ​​the alarm window 101. The alarm window 101 describes the conditions under which the production process must be stopped or employees must be removed from the work areas. In the embodiment shown in Fig. 3, the alarm window 101 is defined by an exemplary temperature range between 20°C and 26°C and a relative humidity range between 60% and 70%. As shown, the setpoint window 100 is defined here by a minimum temperature T. min(minimum target temperature) of 21 °C, a maximum temperature T max (maximum target temperature) of 23°C, a maximum permissible humidity (p max (maximum relative humidity target) of 66% and a minimum permissible humidity (p min (minimum relative target humidity) defined as 63%.

[0155] A schematic sequence of the procedure carried out by the control device 8 for controlling the ventilation system 2 and in particular for determining the setpoint window 100 according to the present disclosure is shown in Fig. 4.

[0156] In step S1, relevant operating parameters are recorded. These include, in particular, the air parameters of the incoming air 5 at inlet 4 and the operating modes of system 1, and preferably also of ventilation system 2. The air parameters of the incoming air 5 at inlet 4 include temperature and humidity. The operating modes of ventilation system 2 include, for example, a standby mode, a normal operating mode, and an ECO mode. The operating modes of system 1 include, for example, the states production, cleaning, startup, pause, weekend, no production, etc.

[0157] To optimally control ventilation system 2, the operating parameters are required at least partially within a prediction interval, for example, for 6 hours. For this purpose, the operating parameters, and in particular the air parameters of the inlet air 5 at inlet 4, are measured with sufficiently short time intervals. New international patent application

[0158] Dürr Systems AG

[0159] 214924 PWO

[0160] October 29, 2025

[0161] 19 / 39

[0162] The air parameters are recorded at intervals, for example every 10 minutes, although intervals of 30 minutes or even just 5 minutes are also possible. The air parameters of the incoming air 5 at inlet 4 can be determined, for example, as real-time data by a sensor or weather station located in close proximity to inlet 4, and / or as real-time and forecast data from external weather services located as close as possible to inlet 4. The operating modes of system 1 and ventilation system 2 are generally known for the future and can be found in the production plan. For this purpose, the control device 8 of ventilation system 2 can, for example, communicate with another control device of system 1.

[0163] As a result, in step S1 a high-resolution time series of the temperature and humidity of the incoming air 5 at inlet 4 as well as a status and a time for each operating mode of the system 1 and the ventilation system 2 are determined.

[0164] In step S2, relevant features are extracted from the data collected in step S1. These include, in particular, the minimum and maximum values ​​of temperature and humidity, and the maximum rate of change of temperature and humidity. From these features, the range of weather conditions and the resulting control strategy or control behavior (heating, cooling, humidifying, or dehumidifying) can be derived. Furthermore, the rate of change of temperature and humidity can provide insights into rapid weather changes, for example, those caused by an approaching thunderstorm, a heavy downpour, or the formation of a fog bank. It is also conceivable to extract further features, such as a mean value, a standard deviation, a second derivative, or frequencies.The fundamental point is that the extracted characteristics allow conclusions to be drawn about the respective control strategy and weather changes.

[0165] With regard to the operating modes, in step S2 characteristics concerning the type of operating mode, the time span or duration of the operating mode and the number of changes of operating modes are recorded.

[0166] In step S3, a risk assessment of the control behavior is performed, based on the characteristics extracted in step S2. The result of the risk assessment can be expressed as a factor (e.g., between 0 and 1 or 0 and 100%) or categorized (e.g., "critical", "medium", "non-critical", etc.).

[0167] A criterion relevant for risk assessment is which control strategy is used, i.e., which conditioning modules 12 to 14 are to be operated to achieve the desired conditioning of the output air 7. This results, firstly, from the conditions of the input air 5 and a division into zones, as schematically depicted in the hx diagram shown in Fig. 5. As can be seen in Fig. 5, the alarm window 101 is defined by the maximum permissible New international patent application

[0168] Dürr Systems AG 214924 PWO October 29, 2025

[0169] 20 / 39

[0170] Humidity (p max , the minimum permissible humidity (p min , the maximum permissible temperature T max and the minimum permissible temperature T minThe system is divided into four zones, as shown in Fig. 5. Depending on which zone the incoming air 5 is located in due to the actual conditions, a different control strategy is used, as illustrated by examples in Table 1 below.

[0171] Table 1: Description of the zones and control strategies

[0172] In Table 1, t represents the temperature in °C, x the absolute humidity in g water / kg air, cp the relative humidity in % and h the enthalpy in kJ / kg.

[0173] Furthermore, it should be noted that the zone classification takes into account not only the controllable conditioning modules 12, 13, 14 (heating, cooling, humidifying, and dehumidifying), but also the potentially non-controllable modules 10 and 16. If the heat recovery device 10 is operated at a constant rate, the (additional) input can be calculated and considered as a fixed value by the control device 8. Similarly, the heat input from the fan 16 can be considered by the control device 8, as this depends on the (known) power of the fan 16 and the (known) volume of air moved. However, it is also conceivable that the heat recovery device 10 is operated in a controlled manner. In this case, the heat recovery device 10 is either considered as a controllable conditioning module, or a sensor provides a temperature and... New international patent application

[0174] Dürr Systems AG

[0175] 214924 PWO

[0176] October 29, 2025

[0177] 21 / 39

[0178] Humidity value measured between input 4 and heat recovery device 10.

[0179] Furthermore, it should be considered that a change in the control strategy, i.e., the use of certain conditioning modules 12 to 14, due to weather changes, poses an increased risk. This involves switching conditioning modules on and off, which can negatively impact the overall control behavior. For example, during a transition from Zone 1 to Zone 2, the heating device 13 is required in addition to the humidification device 14. In this case, the required hot water may not yet be available, leading to a delay in its provision and consequently a control error. This is included in the risk assessment and therefore taken into account.

[0180] Based on the control quality of the individual conditioning modules, a risk assessment results, which is shown by way of example in Table 2 below.

[0181] Table 2: Assessment of the incoming air

[0182] Furthermore, uncertainties in predicted weather data must also be taken into account, especially in the border area between two zones. Depending on the system configuration, this is particularly important to consider, as, for example, hot water is not always available on demand, or the use of a burner as a heating device 13 causes a sudden heat input when switched on.

[0183] Rapid weather changes and high rates of change in air parameters must also be included in the risk assessment, particularly with regard to the properties of the conditioning modules 12 to 14. For example, conditioning via the humidification device 14 is faster than the slower conditioning via the cooling device 12. New international patent application

[0184] Dürr Systems AG

[0185] 214924 PWO

[0186] October 29, 2025

[0187] 22 / 39

[0188] Operating modes also have a significant impact on risk assessment. An increased risk regularly exists before or during production periods, whereas no risk is present during extended production breaks. Depending on the operating mode, the quality of the conditioning and adherence to the target value window of 100 vary. Table 3 below provides examples of different operating modes and their corresponding risks, using a paint shop as an example.

[0189] Table 3: Evaluation of the operating mode

[0190] In step S3, the forecast accuracy is also determined. Various input values ​​can be considered for determining the forecast accuracy, such as the distance of input 4 to the (external) weather station, the agreement of the data transmitted by the external weather station with values ​​actually determined at input 4 in the sense of a historical analysis, and a forecast inaccuracy provided by the external data provider.

[0191] For the risk assessment in step S3, historical data relating to the control of the ventilation system 2 and / or climate data can also be used (additionally). For example, deviations or control errors that occurred in the past can be taken into account for the risk assessment based on the historical data. For this purpose, the control device 8 can have artificial intelligence that evaluates the historical data. The climate data can be... [New international patent application]

[0192] Dürr Systems AG 214924 PWO October 29, 2025 23 / 39, however, provide typical values ​​for various climate factors for the location of ventilation system 2 and the relevant season, such as a typical temperature for the season and the location. The climate data can be provided, in particular, in the form of climate tables.

[0193] Subsequently, in step S4, the setpoint window 100 within the alarm window 101 is determined or updated. The setpoint window is defined by setting or changing the minimum temperature, the maximum temperature, the minimum humidity, and the maximum humidity. In other words, based on the risk assessment, the position and size of the setpoint window 100 within the alarm window 101 are determined by the control device 8.

[0194] For example, if a clearly critical situation is assumed or expected, the setpoint window 100 (1) is defined as small as possible and centered in the alarm window 101, see Fig. 6. This may be the case, for example, with an expected weather event (e.g. thunderstorm), planned full-capacity production, or an inaccurate weather forecast.

[0195] If, however, a clearly non-critical situation is assumed or expected, the setpoint window 100 (2) is chosen to be as large as possible, see Fig. 6. It should be noted that in this case, the setpoint window 100 (2) can also be identical to or approximately the same size as the alarm window 101. A large setpoint window 100 (2) is defined, for example, in the case of stable weather conditions, good forecast accuracy, or no planned production.

[0196] In a partially critical situation, the setpoint window 100 (3) is defined in the middle of the alarm window 101, but with a larger area than in a critical situation, see Fig. 6.

[0197] Step S4a is optional. The setpoint window 100 can be adjusted manually. For this purpose, the user can, for example, be shown the setpoint window 100 as a suggested setpoint window via the control device 17. Depending on the user's risk tolerance, they can then manually enlarge or reduce the setpoint window 100 via the touchscreen of the control device 17. The risk assessment and forecast accuracy determined in step S3 can be provided to the user via the touchscreen as an aid. In addition, the corresponding expected energy consumption of the ventilation system 2 can be displayed. The consequences of changing the setpoint window 100 with regard to risk and energy consumption can also be shown to the user. The user can then confirm their input, and the control device 8 adopts the changes.New international patent application.

[0198] Dürr Systems AG 214924 PWO October 29, 2025

[0199] 24 / 39

[0200] As mentioned above, the setpoint window 100 is dynamically or iteratively adjusted or updated. In step S5, the adjustment rate of the setpoint window 100 is determined. To avoid unwanted fluctuations in the ventilation system 2, the setpoint window 100 is not updated abruptly, but gradually. The adjustment rate is determined by the time intervals between two update steps. It should be noted that the temperature and humidity can be adjusted separately and differently. For example, the temperature can be adjusted by 0.2°C every 30 minutes and the humidity by 1% every 30 minutes. If, for example, the temperature is to be changed from 23°C to 20°C and the humidity from 65% to 61%, the desired setpoint temperature will be reached after 7.5 hours, but the desired setpoint humidity after only 2 hours.

[0201] The artificial intelligence of the control device 8 can also be used for this purpose, as it can take into account learned, plant-specific vibration behavior. For example, it can be deduced that an increase in temperature leads to fewer vibrations than a decrease in temperature. Accordingly, the adaptation speed can therefore differ depending on the direction. The control device 8 can also take into account that a slower adaptation is required when changing the control strategy.

[0202] In step S6, the updated values ​​defining the target value window of 100 (especially the maximum permissible humidity) are entered. <p max , the minimum permissible humidity (p min , the maximum permissible temperature T max and the minimum permissible temperature T min) is stored in the control device 8. This allows the control device 8 to continuously control the conditioning of the input air 5 in the conditioning section based on the updated setpoint window. The control device 8 is therefore preferably designed as a programmable logic controller (PLC). It is conceivable that the setpoint window 100 is updated by additionally transmitting the adaptation rate or by high-frequency iteration.

[0203] In step S7, actual values ​​of the air parameters are recorded, for example, the actual temperature and humidity of the incoming air 5 at inlet 4, the actual temperature and humidity of the outgoing air 7 at outlet 6, as well as the consumption of the conditioning modules 2 to 14 (energy and media consumption) and the operating mode of system 1 and ventilation system 2, etc. In particular, time series and historical data of the actual values ​​are generated for further processing.

[0204] In step S8, the risk assessment according to step S3 is validated and, if necessary, adjusted based on the data obtained in step S7. This allows the risk assessment to be continuously improved and the target value window 100 to be defined even more precisely. In particular, at least one actual value is processed by the artificial intelligence of the control device 8 to adjust the risk assessment. Furthermore, other parameters can also be taken into account, for example, a quality parameter which determines the quality of a workpiece to be produced. New international patent application

[0205] Dürr Systems AG 214924 PWO October 29, 2025

[0206] 25 / 39 describes. In the event of unacceptable quality, the alarm window 101 can also be adjusted accordingly by the control device 8.

[0207] Step S1 is then executed again, taking into account the insights and data gained for the further update of the target value window 100.

[0208] Figure 7 shows the schematic structure of a ventilation system 2 according to a second embodiment. Based on this second embodiment, the control of the conditioning of the incoming air 5 in the conditioning section 9 by the control device 8, according to the invention, is described below.

[0209] The ventilation system 2 of the second embodiment is essentially the same as the ventilation system 2 shown in Fig. 2 according to the first embodiment. This applies in particular to all components and associated processes described. However, the ventilation system 2 of the second embodiment differs from the ventilation system 2 shown in Fig. 2 by a different design of the conditioning section 9. In this example, the conditioning section 9 comprises, in the order from inlet 4 to outlet 6, the following conditioning modules 12, 13, 18, and 19: the heating device 13, the cooling device 12, and, instead of the combined humidification and dehumidification device 14, a humidification device 18 and a (separate) dehumidification device 19. The dehumidification device 19 is designed as a heating device or reheating device.The fan 16 is arranged between the dehumidification device 19 and the outlet 6 to draw in the inlet air 5 at the inlet 4, pass it through the conditioning section 9, and finally discharge it as outlet air 7 at the outlet 6. Naturally, the various modules 16, or conditioning modules 12, 13, 18, and 19, can also be arranged in a different order. Furthermore, it is conceivable that individual conditioning modules could be omitted, as will be explained below in relation to the various control processes. With the arrangement of the conditioning modules 12, 13, 18, and 19 shown here, or rather the design of the conditioning section 9, particularly efficient temperature and humidity control can be achieved. Thus, in this embodiment as well, a setpoint window 100 is provided for the temperature and humidity of the outlet air 7, see Fig. 8.

[0210] Fig. 8 schematically shows an hx diagram with a defined setpoint window 100 of the present embodiment. As already explained with regard to the first embodiment, the setpoint window 100 is defined by two temperature and two humidity setpoints: the minimum setpoint temperature ST min , the maximum target temperature ST max , the minimum relative target humidity S(p min and the maximum relative humidity S(p max Thus, the target value window of 100 is determined by the four

[0211] The setpoint window corners P1 to P4 are limited. The first setpoint window corner P1 is located at the maximum setpoint temperature ST. max and the maximum relative target humidity S(p max The second new international patent application

[0212] Dürr Systems AG 214924 PWO October 29, 2025

[0213] 26 / 39

[0214] Setpoint window corner P2 lies at the maximum relative target humidity S(p max and the minimum target temperature ST min The third setpoint window corner point P3 lies at the minimum relative setpoint humidity S(p min and the minimum target temperature ST min And the fourth setpoint window corner point P4 lies at the minimum relative setpoint humidity S(p min and the maximum target temperature ST max .

[0215] The various conditioning modules 12, 13, 18, and 19 of the conditioning section 9 and the control device 8 are fundamentally designed to condition the incoming air 5 from a determined actual air parameter value to a setpoint within the setpoint window 100, based on a defined control variable. In this context, temperature is defined as the control variable for the heating device 13. If the actual temperature of the incoming air 5 falls below the minimum setpoint temperature ST min The incoming air 5 is heated by the heating device 13 to the minimum target temperature ST. min conditioned or heated. The temperature is also provided as a fixed control variable for the cooling device 12. If the actual temperature value exceeds the maximum setpoint temperature ST max The incoming air 5 is cooled by the cooling device 12 to the maximum target temperature ST. maxconditioned or cooled. Furthermore, relative humidity is specified as a fixed control variable for the humidification device 18. If the actual value of the relative humidity falls below the minimum target relative humidity S(p min The incoming air 5 is humidified by the humidification device 18 to the minimum relative target humidity S(p). min conditioned or humidified. Furthermore, relative humidity is also provided as a fixed control variable for the dehumidification device 19. If the actual value of the relative humidity is above the maximum relative target humidity S(p max The incoming air 5 is dehumidified by the dehumidification device 19 to the maximum relative target humidity S(p). max conditioned or dehumidified / heated.

[0216] In addition to the fundamental control processes described above, the control device 8 is designed to provide or define different actual value ranges for the individual conditioning modules 12, 13, 18, and 19, within which different control tasks are performed (see Figures 9 to 12). Firstly, actual value ranges can be provided in which the fundamentally defined controlled variable and the fundamentally defined setpoint of the respective conditioning module 12, 13, 18, and 19 remain advantageous and relevant. If the corresponding determined actual value of the air parameter falls within this actual value range, the control device 8 uses the determined actual value of the air parameter directly to control the respective conditioning module 12, 13, 18, and 19 in order to condition the incoming air 5 to the fundamentally defined setpoint, as described above, based on the fundamentally defined controlled variable.Furthermore, actual value ranges can be provided in which a different controlled variable and / or a different setpoint for the respective conditioning module 12, 13, 18 and 19 is taken into account. If the corresponding determined actual air parameter value falls within this actual value range, the control of the respective conditioning module 12, 13, 18 and 19 does not rely on the other New international patent application.

[0217] Dürr Systems AG 214924 PWO October 29, 2025 27 / 39

[0218] The controlled variable and / or the other setpoint are not switched; rather, only the determined actual value of the air parameter is manipulated, and the manipulated actual value of the air parameter is used by the control device 8 to control the respective conditioning module 12, 13, 18, and 19. The respective conditioning module 12, 13, 18, and 19 can thus continue to be controlled based on the fundamentally defined controlled variable and / or the fundamentally defined setpoint, even though a different controlled variable and / or a different setpoint is actually relevant.

[0219] Figures 9 to 12 schematically show hx diagrams with the setpoint window 100 and various examples of actual value ranges for the conditioning modules 12, 13, 18, and 19. Figure 9 illustrates a possible actual value range for the heating device 13. In particular, a first actual value range B1 is provided, which surrounds the setpoint window 100. The first actual value range B1 is defined by the fact that the temperature is below the minimum setpoint temperature ST. min The first actual value range B1 is provided for, that the inlet air 5 is heated by the heating device 13 to the temperature of the setpoint window corner point P3, i.e. the minimum setpoint temperature ST. min , is conditioned or heated.

[0220] Figure 10 shows exemplary possible actual value ranges for the cooling device 12. As shown, a second actual value range B2, a third actual value range B3, and a fourth actual value range B4 are provided, surrounding the setpoint window 100. In this embodiment, the fourth actual value range B4 represents a primary actual value range according to the present invention. Furthermore, the second actual value range B2 and the third actual value range B3 represent a secondary actual value range according to the present invention. The second actual value range B2 is relevant when no humidification device 18 is present, and the temperature is above the maximum setpoint temperature ST. maxThe temperature is lower than the absolute humidity at the setpoint window corner P1. In the second actual value range B2, the incoming air 5 is cooled by the cooling device 12 to the temperature of the setpoint window corner P1, i.e., the maximum setpoint temperature ST. maxThe third actual value range, B3, is relevant when a humidification device 18 is present and used for cooling, the absolute humidity is lower than the absolute humidity at the setpoint window corner P1, and the enthalpy is higher than the enthalpy at the setpoint window corner P1. In the third actual value range, B3, the incoming air 5 is conditioned or cooled by the cooling device 12 to the enthalpy at the setpoint window corner P1. The fourth actual value range, B4, is defined by the fact that the absolute humidity is higher than the absolute humidity at the setpoint window corner P1. In the fourth actual value range, B4, the incoming air 5 is conditioned or cooled by the cooling device 12 to the absolute humidity at the setpoint window corner P1.

[0221] Figure 11 shows examples of possible actual value ranges for the humidification device 18. As shown, a fifth actual value range B5, a sixth actual value range B6, and a seventh are shown in the new international patent application.

[0222] Dürr Systems AG 214924 PWO October 29, 2025 28 / 39

[0223] Actual value range B7 is provided, surrounding the setpoint window 100. In this embodiment, the sixth actual value range B6 represents a primary actual value range according to the present invention. Furthermore, the fifth actual value range B5 and the seventh actual value range B7 represent secondary actual value ranges according to the present invention. The fifth actual value range B5 is defined by the fact that the relative humidity is below the minimum relative setpoint humidity S(p minThe enthalpy is less than or equal to the enthalpy of the setpoint window corner P4. In the fifth actual value range B5, it is provided that the inlet air 5 is humidified by the humidification device 18 to the relative humidity of the setpoint window corner P3, i.e., the minimum relative setpoint humidity S(p). min , is conditioned or humidified. The sixth actual value range B6 is defined by the fact that the temperature is above the maximum setpoint temperature ST. max The temperature is greater than the enthalpy of the setpoint window corner P4 and less than or equal to the enthalpy of the setpoint window corner P1. In the sixth actual value range B6, it is provided that the inlet air 5 is humidified by the humidification device 18 to the temperature of the setpoint window corner P1, i.e., the maximum setpoint temperature ST. maxThe air is conditioned or humidified. Here, the humidification device 18 is used for cooling. The seventh actual value range B7 is defined by the fact that the enthalpy is greater than the enthalpy of the setpoint window corner P1 and the relative target humidity is less than the relative target humidity of the setpoint window corner P1. In the seventh actual value range B7, it is provided that the inlet air 5 is conditioned by the humidification device 18 to the relative humidity of the setpoint window corner P1, i.e., the maximum relative target humidity Scp. max , is conditioned or moistened.

[0224] Figure 12 shows exemplary possible actual value ranges for the dehumidification device 19. As shown, an eighth actual value range B8, a ninth actual value range B9, and a tenth actual value range B10 are provided, surrounding the setpoint window 100. In this embodiment, the eighth actual value range B8 and the tenth actual value range B10 constitute a primary actual value range according to the present invention. Furthermore, the ninth actual value range B9 constitutes a secondary actual value range according to the present invention. The eighth actual value range B8 is relevant when no heating device 13 is present and the temperature is below the minimum setpoint temperature ST. minThe temperature is lower than or equal to the absolute humidity of the setpoint window corner P2. In the eighth actual value range B8, it is provided that the incoming air 5 is dehumidified by the dehumidification device 19 to the temperature of the setpoint window corner P3, i.e., the minimum setpoint temperature ST. min , is conditioned or dehumidified / heated (the dehumidification device 19 is designed as a heating device). Here, the dehumidification device 19 takes over the functions of the non-existent heating device 13. The ninth actual value range B9 is defined by the fact that the relative humidity is above the maximum relative target humidity S(p maxlies and the absolute humidity is greater than the absolute humidity of the setpoint window corner P2 and less than the absolute humidity of the setpoint window corner P1. In the ninth actual value range B9, it is provided that the inlet air 5 is dehumidified by the dehumidification device 19 to the maximum relative humidity of the New international patent application

[0225] Dürr Systems AG 214924 PWO October 29, 2025

[0226] 29 / 39

[0227] Setpoint window corner point P1 , i.e. the maximum relative target humidity S(p max , is conditioned or dehumidified / heated. The tenth actual value range B10 is defined by the fact that the temperature is below the maximum setpoint temperature ST. maxThe temperature is greater than or equal to the absolute humidity at the setpoint window corner P1. In the tenth actual value range B10, the incoming air 5 is dehumidified by the dehumidification device 19 to the temperature of the setpoint window corner P1, i.e., the maximum setpoint temperature ST. max , is conditioned or dehumidified / heated. Of course, other actual value ranges for the various conditioning modules 12, 13, 18 and 19 can also be considered or defined.

[0228] Taking into account the defined first to tenth actual value ranges B1 to B10 for the various conditioning modules 12, 13, 18 and 19, the control of the conditioning of the inlet air 5 in the conditioning section 9 according to the invention can be carried out by the control device 8 as follows.

[0229] First, for example, the control device 8 determines the actual values ​​for the temperature and relative humidity of the incoming air 5 at the inlet 4 of the ventilation system 2 using a combined sensor (not shown in the figures). Of course, the temperature and relative humidity of the incoming air 5 can also be determined by other suitable sensors. If required, the actual values ​​for absolute humidity and enthalpy can also be calculated from these two parameters. The control device 8 then checks whether the actual values ​​for temperature and relative humidity for the individual conditioning modules 12, 13, 18, and 19 fall within one of the defined first to ten actual value ranges B1 to B10 in order to implement the respective intended control task.In principle, several sensors can also be provided for the individual conditioning modules 12, 13, 18 and 19 in the conditioning section 9.

[0230] With regard to the heating device 13, taking into account the overall control strategy, for example, the first actual value range B1 is provided, cf. Fig. 9. If the determined actual value for the temperature and the relative humidity lies in the first actual value range B1, the inlet air 5 is heated to the minimum setpoint temperature ST as usual. min The device is conditioned or heated. In this case, no other controlled variable and / or setpoint needs to be considered. Therefore, the control device 8 uses the determined actual value for temperature and relative humidity directly to control the heating device 13. In particular, the actual temperature value is used directly by the control device 8 to control the heating device 13 based on the defined controlled variable.

[0231] For the cooling device 12, for example, the second actual value range B2, the third actual value range B3 and / or the fourth actual value range B4 can be defined within the framework of the overall control strategy. New international patent application

[0232] Dürr Systems AG 214924 PWO October 29, 2025

[0233] 30 / 39 cf. Fig. 10. If the determined actual value for the temperature and relative humidity is in the second actual value range B2 (and no humidification device 18 is present), the inlet air 5 is heated to the maximum setpoint temperature ST as generally specified. maxThe device is conditioned or cooled. In this case, no other controlled variable and / or setpoint needs to be considered. Thus, the control device 8 uses the determined actual value for temperature and relative humidity directly to control the cooling device 12. In particular, the actual temperature value is used directly by the control device 8 to control the cooling device 12 based on the defined controlled variable.

[0234] If, however, the actual values ​​for temperature and relative humidity are in the third actual value range B3 (and a humidification device 18 is present, which is used for cooling), the inlet air 5 should actually be conditioned or cooled to the enthalpy of the setpoint window corner P1. For this purpose, however, the control variable is not switched to enthalpy, but the determined actual values ​​for temperature and relative humidity are manipulated accordingly, and the control device 8 uses the manipulated actual values ​​for temperature and relative humidity to control the cooling device 12. In particular, the actual temperature value is manipulated accordingly and used by the control device 8 to control the cooling device 12. Ultimately, the cooling device 12 is used, as fundamentally defined, to cool to the maximum setpoint temperature ST. max regulated, although the regulation actually focuses on enthalpy.

[0235] If the actual values ​​for temperature and relative humidity are in the fourth actual value range B4, the incoming air 5 should indeed be conditioned or cooled to the absolute humidity of the setpoint window corner P1. However, the control variable is not switched to absolute humidity; instead, the determined actual values ​​for temperature and relative humidity are manipulated accordingly, and the control device 8 uses this manipulated value to control the cooling device 12. Specifically, the actual temperature value is manipulated and used by the control device 8 to control the cooling device 12. Consequently, the cooling device 12, as generally defined, is cooled to the maximum setpoint temperature ST. maxThe system is regulated, although it is actually regulated based on absolute humidity. Overall, when switching between the different actual value ranges B2 to B4 and corresponding control tasks of the cooling device 12, no switching to other controlled variables and / or setpoints is necessary.

[0236] As shown in Fig. 11, for the humidification device 18, taking into account the overall control strategy, the fifth actual value range B5, the sixth actual value range B6 and / or the seventh actual value range B7 can be defined, for example. If the determined actual value for the temperature and the relative humidity lies in the fifth actual value range B5, the inlet air 5 is humidified as generally set to the minimum relative target humidity S(p). min Conditioned or humidified. In this case, no other controlled variable and / or setpoint needs to be considered. New international patent application

[0237] Dürr Systems AG 214924 PWO October 29, 2025

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[0239] Thus, the control device 8 uses the determined actual value for temperature and relative humidity directly to control the humidification device 18. In particular, the actual value for relative humidity is used directly by the control device 8 to control the humidification device 18 based on the specified control variable.

[0240] If the actual value for the temperature and relative humidity is in the sixth actual value range B6, the incoming air 5 should actually be heated to the maximum target temperature ST. maxThe room is conditioned or humidified. However, the control variable is not switched to temperature; instead, the determined actual values ​​for temperature and relative humidity are manipulated accordingly, and the control device 8 uses this manipulated value to control the humidification device 18. Specifically, the actual value for relative humidity is manipulated and used by the control device 8 to control the humidification device 18. Ultimately, the humidification device 18, as fundamentally defined, maintains the minimum target relative humidity S(p). min regulated, although it is actually the temperature that is being regulated.

[0241] If the actual value for the temperature and relative humidity is in the seventh actual value range B7, the incoming air 5 should actually be adjusted to the maximum relative target humidity S(pmax They are conditioned or humidified. However, the maximum relative target humidity (Scp) is not used for this. max Instead of switching to the setpoint, the determined actual value for temperature and relative humidity is manipulated accordingly, and the control device 8 uses the manipulated actual value for temperature and relative humidity to control the humidification device 18. In particular, the actual value for relative humidity is manipulated accordingly and used by the control device 8 to control the humidification device 18. Ultimately, the humidification device 18, as fundamentally defined, is used to control the minimum relative setpoint humidity S(p). min regulated, although actually based on the maximum relative target humidity S(p maxis regulated. Overall, when switching between the different actual value ranges B5 to B7 and corresponding control tasks of the humidification device 18, no switching to other control variables and / or setpoints is necessary.

[0242] For the dehumidification device 19, the eighth actual value range B8, the ninth actual value range B9 and / or the tenth actual value range B10 can be defined within the framework of the overall control strategy, cf. Fig. 12. If the determined actual value for the temperature and relative humidity lies in the eighth actual value range B8 (and no heating device 13 is present), the inlet air 5 should actually be cooled to the minimum setpoint temperature ST minThe system is conditioned or dehumidified / heated. However, the temperature is not used as the control variable; instead, the determined actual value for temperature and relative humidity is manipulated accordingly, and the control device 8 uses the manipulated actual value for temperature and relative humidity to control the dehumidification device 19. In particular, the actual value is... [New international patent application]

[0243] Dürr Systems AG 214924 PWO October 29, 2025 32 / 39 for the relative humidity is manipulated accordingly and used by the control device 8 to control the dehumidification device 19. Ultimately, the dehumidification device 19, as generally specified, is used to control the maximum relative target humidity Scp max regulated, although it is actually the temperature that is being regulated.

[0244] If the determined actual value for temperature and relative humidity lies within the ninth actual value range B9, the incoming air 5 is conditioned or dehumidified / heated to the maximum relative humidity setpoint StPmax, as is generally defined. In this case, no other control variable and / or setpoint needs to be considered. Thus, the control device 8 uses the determined actual value for temperature and relative humidity directly to control the dehumidification device 19. In particular, the actual value for relative humidity is used directly by the control device 8 to control the dehumidification device 19 based on the defined control variable.

[0245] If the actual value for temperature and relative humidity is in the tenth actual value range B10, the incoming air 5 should actually be heated to the maximum target temperature ST. maxThe air is conditioned or dehumidified / heated. However, the control variable is not switched to temperature; instead, the determined actual values ​​for temperature and relative humidity are manipulated accordingly, and the control device 8 uses these manipulated values ​​to control the dehumidification device 19. Specifically, the actual value for relative humidity is manipulated and used by the control device 8 to control the dehumidification device 19. Ultimately, the dehumidification device 19 is controlled, as fundamentally defined, to achieve the maximum target relative humidity Scpmax, even though the control is actually based on temperature.Overall, when switching between the different actual value ranges B8 to B10 and corresponding control tasks of the dehumidification device 19, no switching to other control variables and / or setpoints is necessary.

[0246] The inventive method, or rather the control of the conditioning of the inlet air 5 in the conditioning section 9, prevents disturbances caused by switching between controlled variables and / or setpoints and / or control devices (with a finer subdivision of the control tasks). Overall, a more vibration-free, robust, and energy-efficient control behavior is achieved.

[0247] Finally, it should be noted that the numerical designations used, such as "primary," "secondary," "first," "second," "third," "fourth," "fifth," "sixth," "seventh," "eighth," "ninth," and "tenth," do not imply any desired order. Rather, they serve solely to conceptually distinguish similar features and elements of the present disclosure. New international patent application Dürr Systems AG 214924 PWO October 29, 2025

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[0249] REFERENCE MARK

[0250] 1 Annex

[0251] 2 ventilation system

[0252] 3 Ventilation room

[0253] 4 Entrance

[0254] 5 Inlet air

[0255] 6 Exit

[0256] 7. Output air

[0257] 8 Control device

[0258] 9 Conditioning section

[0259] 10 Heat recovery device

[0260] 11 First filter device

[0261] 12 Cooling device

[0262] 13 Heating device

[0263] 14 Humidification and dehumidification device

[0264] 15 Second filter device

[0265] 16 fans

[0266] 17 Operating device

[0267] 18 Humidification device

[0268] 19 Dehumidification device

[0269] 100 setpoint windows

[0270] 101 Alarm Windows

[0271] B1 - B10 First to tenth actual value range

[0272] P1 - P4 First to fourth setpoint window corner

Claims

New international patent application Dürr Systems AG 214924 PWO October 29, 2025 34 / 39 REQUIREMENTS 1. Method for controlling a ventilation system (2), wherein the ventilation system (2) has an inlet (4) for receiving inlet air (5), a conditioning section (9) for conditioning the received inlet air (5), an outlet (6) for discharging outlet air (7) and a control device (8), wherein the method comprises the following steps: Defining a setpoint window (100) for at least one air parameter of the output air (7), preferably by the control device (8); and Control of the conditioning of the inlet air (5) in the conditioning section (9) based on the setpoint window (100) by the control device (8).

2. Method for controlling a ventilation system (2) according to claim 1, wherein the at least one air parameter of the output air (7) comprises at least one of the following parameters: a temperature; a humidity; an aerosol content; and an air volume flow rate.

3. Method for controlling a ventilation system (2) according to claim 1 or 2, wherein at least one operating parameter of the ventilation system (2) and / or of a system (1) comprising the ventilation system (2) is detected and processed by the control device (8) to determine the setpoint window (100).

4. Method for controlling a ventilation system (2) according to claim 3, wherein the at least one operating parameter comprises at least one current, and / or predicted, and / or historical parameter.

5. Method for controlling a ventilation system (2) according to claim 3 or 4, wherein the at least one operating parameter comprises at least one air parameter of the inlet air (5) at the inlet (4) and / or at least one operating mode.

6. Method for controlling a ventilation system (2) according to claim 5, wherein at least one air parameter of the inlet air (5) at the inlet (4) and at least one air parameter of the outlet air (7) have at least one identical parameter type. New international patent application Dürr Systems AG 214924 PWO October 29, 2025 35 / 39 7. A method for controlling a ventilation system (2) according to any one of claims 3 to 6, wherein the at least one operating parameter comprises at least one of the following parameters: a current, and / or predicted, and / or historical temperature of the inlet air (5) at the inlet (4); a current, and / or predicted, and / or historical humidity of the inlet air (5) at the inlet (4); a current, and / or predicted, and / or historical aerosol content of the inlet air (5) at the inlet (4); a current, and / or predicted, and / or historical operating mode of the ventilation system (2); and a current, and / or predicted, and / or historical operating mode of a system (1) comprising the ventilation system (2).

8. Method for controlling a ventilation system (2) according to one of the preceding claims, wherein a risk assessment is carried out to determine the setpoint window (100), wherein the risk assessment is preferably carried out based on at least one operating parameter, and / or historical data, and / or climate data.

9. Method for controlling a ventilation system (2) according to claim 8, wherein, for risk assessment, a control behavior of the ventilation system (2) and / or a quality of at least one operating parameter is evaluated.

10. Method for controlling a ventilation system (2) according to claim 8 or 9, wherein the control device (8) comprises an artificial intelligence, wherein the risk assessment is at least partially carried out by the artificial intelligence.

11. Method for controlling a ventilation system (2) according to one of claims 8 to 10, wherein the ventilation system has an operating device (17), wherein at least one proposed setpoint window is calculated by the control device (8) based on the risk assessment to determine the setpoint window (100), the at least one proposed setpoint window is displayed via the operating device (17), and a user input at the operating device (17) with respect to the at least one proposed setpoint window is detected and processed by the control device (8), wherein the display of the at least one proposed setpoint window preferably also displays information relating to an associated risk and / or an associated energy consumption. New international patent application Dürr Systems AG 214924 PWO October 29, 2025 36 / 39 12. Method for controlling a ventilation system (2) according to one of the preceding claims, wherein the step of setting the setpoint window (100) is repeated to obtain an updated setpoint window, so that the conditioning of the incoming air (5) in the conditioning section (9) is controlled based on the updated setpoint window.

13. Method for controlling a ventilation system (2) according to claim 12, wherein the setpoint window is continuously or stepwise switched to the updated setpoint window by the control device (8) over a defined period of time, so that the conditioning of the incoming air (5) in the conditioning section (9) is controlled accordingly over the defined period of time.

14. Method for controlling a ventilation system (2) according to one of the preceding claims and at least claim 8, wherein the method comprises the following step: Acquiring at least one actual value by the control device (8) for at least one of: the at least one operating parameter; the at least one air parameter of the output air (7); a consumption of the conditioning section (9); and a quality parameter relating to a system (1) comprising the ventilation system (2), wherein the at least one actual value is processed by the control device (8) for risk assessment.

15. Method for controlling a ventilation system (2) according to one of the preceding claims, wherein a primary actual value range (B4, B6, B8, B10) surrounds the setpoint window (100), wherein an actual air parameter value of the incoming air (5) is determined for controlling the conditioning of the incoming air (5), wherein the actual air parameter value is manipulated into a first manipulated actual air parameter value if the actual air parameter value lies in the primary actual value range (B4, B6, B8, B10), and the first manipulated actual air parameter value is used by the control device (8) to control the conditioning of the incoming air (5), such that the incoming air (5) is conditioned to a setpoint within the setpoint window (100) based on the first manipulated actual air parameter value.

16. Method for controlling a ventilation system (2) according to claim 15, wherein the actual air parameter value and the first manipulated actual air parameter value have an identical parameter type with a different value.

17. Method for controlling a ventilation system (2) according to one of claims 15 or 16, New international patent application Dürr Systems AG 214924 PWO October 29, 2025 37 / 39 wherein the actual air parameter value, and / or the first manipulated actual air parameter value, and / or the setpoint value has a temperature value and / or a humidity value and / or an enthalpy value.

18. Method for controlling a ventilation system (2) according to any one of claims 15 to 17, wherein a secondary actual value range (B2, B3, B5, B7, B9) surrounds the setpoint window (100), wherein the primary actual value range (B4, B6, B8, B10) differs from the secondary actual value range (B2, B3, B5, B7, B9), wherein the actual air parameter value is used directly by the control device (8) to control the conditioning of the incoming air (5), such that the incoming air (5) is conditioned to a setpoint within the setpoint window (100) based on the actual air parameter value when the actual air parameter value is in the secondary actual value range (B2, B3, B5, B7, B9), or wherein the actual air parameter value is manipulated into a second manipulated actual air parameter value when the actual air parameter value is in the secondary The actual value range (B2, B3, B5, B7, B9) is located there.and the second manipulated actual air parameter value is used by the control device (8) to control the conditioning of the inlet air (5), so that the inlet air (5) is conditioned to a setpoint within the setpoint window (100) based on the second manipulated actual air parameter value.

19. Method for controlling a ventilation system (2) according to claim 18, wherein the conditioning section (9) has at least two conditioning modules (12, 13, 14, 18, 19) for each type of conditioning, wherein the primary actual value range (B4, B6, B8, B10) and the secondary actual value range (B2, B3, B5, B7, B9) are determined by the control device (8) depending on the type of conditioning of the incoming air (5).

20. Method for controlling a ventilation system (2) according to claim 18 or 19, wherein the actual air parameter value and the second manipulated actual air parameter value have an identical parameter type with a different value.

21. Method for controlling a ventilation system (2) according to one of claims 18 to 20, wherein the second manipulated air parameter actual value comprises a temperature value and / or a humidity value and / or an enthalpy value.

22. Ventilation system (2), comprising: an inlet (4) for receiving inlet air (5); a conditioning section (9) for conditioning the received inlet air (5); an outlet (6) for discharging outlet air (7); and New international patent application Dürr Systems AG 214924 PWO October 29, 2025 38 / 39 a control device (8) wherein the control device (8) is configured to perform the method according to one of the preceding claims.

23. Ventilation system (2) according to claim 22, wherein the conditioning section (9) has at least one conditioning module for one type of conditioning, preferably at least two conditioning modules for one type of conditioning each.

24. Ventilation system (2) according to claim 22 or 23, wherein the conditioning section (9) comprises a filter device (11, 15), and / or a cooling device (12), and / or a heating device (13), and / or a dehumidifying device (14, 19), and / or a humidifying device (14, 18), and / or a fan (16), and / or a heat recovery device (10).

25. Ventilation system (2) according to one of claims 22 to 24, wherein the ventilation system (2) has an operating device (17) for displaying information and / or entering user input.

26. System (1) comprising a ventilation system (2) according to one of claims 22 to 25 and a ventilation room (3) to be ventilated by the ventilation system (2), wherein the system (1) is preferably a painting system and / or the ventilation room (3) is preferably a production room, a storage room, a paint mixing room or a painting booth.

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