DE102022108935A1 - Method for controlling a ventilation system, ventilation system and control device - Google Patents

Abstract

The invention provides a method for controlling a ventilation system 100 of a building with at least one room to be ventilated, which has at least one ventilation system 10 for generating a ventilation flow, a ventilation duct system 20 for distributing the generated ventilation flow and at least a first ventilation device 31 coupled to the ventilation duct system 20 to be ventilated first room 30 of the building for supplying a supply air flow based on the generated ventilation flow into the first room 30, the method comprising providing a setpoint for an air parameter to be controlled by means of the ventilation system 100 in the first room 30, detecting an actual value of the controlling air parameter in the first room 30, determining a difference between the setpoint provided and the recorded actual value of the air parameter to be controlled in the first room 30 and controlling the ventilation system 100 depending on the determined difference in the first room 30.

Description

Technical area

The present invention relates to a method for controlling a ventilation system, a ventilation system and a control device for use in a ventilation system.

Background of the invention

Rooms and room areas are often used very differently in a building. Accordingly, a setpoint of an air parameter that determines the air quality in the room can vary from room to room or from room section to room section.

In addition, the air parameter in a room can essentially be influenced by other influences, such as people present in the room, opened or closed windows and doors and the like. This represents a control challenge for a building's ventilation system used for ventilation, which is intended to specifically influence the air quality in a room or rooms in the building.

The air quality, which is determined by the air parameter, not only affects the feeling of comfort of a person present in the room in question, but can also influence their health, for example with regard to pathogens contained in the air or an insufficient supply of oxygen.

Furthermore, the ventilation system should achieve a desired air quality or a desired value of the air parameter that determines it as quickly as possible in order to, among other things, optimally accommodate a wide variety of uses of a room. Especially when there are a large number of people present in the room, controlling the ventilation system often requires adjusting the ventilation performance.

Another challenge for controlling the ventilation system is operation with resource-saving energy consumption, which not only affects the operating costs but also the service life of the ventilation system

Summary of the invention

Accordingly, it is the object of the invention to provide a way to operate a ventilation system for a building more efficiently.

To solve this problem, a method for controlling a ventilation system according to claim 1, a ventilation system according to claim 12 and a control device according to claim 15 are provided.

The respective dependent claims relate to preferred embodiments, which can each be provided individually or in combination.

According to a first aspect of the invention, a method for controlling a ventilation system of a building with at least one room to be ventilated, which includes at least one ventilation system for generating a ventilation flow, a ventilation duct system for distributing the generated ventilation flow and at least a first ventilation device coupled to the ventilation duct system ventilating first room of the building for supplying a supply air flow based on the generated ventilation flow into the first room, the method comprising providing a setpoint for an air parameter to be controlled by means of the ventilation system in the first room, detecting an actual value of the air parameter to be controlled in the first room , a determination of a difference between the provided setpoint and the recorded actual value of the air parameter to be controlled in the first room and a control of the ventilation system depending on the determined difference of the first room, provided.

The first ventilation device comprises at least one supply air device for supplying the supply air flow and preferably an exhaust air device for discharging an exhaust air flow from the room to be ventilated in order to ensure sufficient air exchange in the first room.

The supply air and exhaust air devices of the first ventilation device can be arranged spatially separately from one another in or on the first room, but can also be provided together as a unit.

The supply air and/or the exhaust air device preferably comprise a blower unit or a valve unit, via the operating parameters of which the supply air flow or the exhaust air flow can be adjusted, for example a blower power of the blower unit or a valve position of the valve unit.

The embodiments of the first ventilation device described above apply analogously to all other ventilation devices of the ventilation system.

The ventilation system centrally provides the ventilation flow generated by it, which is distributed across the ventilation duct system in the building and is provided to various ventilation devices as the basis for their respective supply air flow. The ventilation system can generate the ventilation flow in different ways.

On the one hand, the ventilation system can preferably be operated in a recirculation mode, in which the ventilation system is returned to the ventilation system via the ventilation duct system via exhaust air removed from the first room (or any other room with a ventilation device of the ventilation system) by the first ventilation device and from there again as Ventilation flow is generated in the form of a circulating air flow. The ventilation system preferably comprises a cleaning and/or a filter device for cleaning the discharged exhaust air before it is introduced back into the ventilation duct system as a generated ventilation flow.

In this way, in the exemplary case of an excessive temperature gradient between a desired internal temperature in the building and an external temperature in the environment, it can be ensured that the ventilation system does not have a counteracting effect on the desired temperature control of a room, for example by a heating system.

On the other hand, the ventilation system can preferably be operated in a fresh air mode, in which the ventilation system is provided with fresh air from an environment of the building in order to generate the ventilation flow to be distributed via the ventilation duct system as a fresh air flow. In this case, exhaust air removed from the first room (or any further room with a ventilation device of the ventilation system) is preferably discharged by the ventilation device into the surroundings of the building. Here, too, the ventilation system preferably comprises a cleaning and / or a filter device for cleaning the fresh air, For example, to remove pollen, dirt particles or pathogens from the building's surroundings.

In this way, a complete exchange of air takes place, during which contaminated exhaust air is completely removed from the building and replaced with fresh air.

Preferably, the ventilation system can also be operated in a mixed mode of recirculating air and fresh air mode, in which in a mixing device of the ventilation system the ventilation flow is made up of (preferably purified) fresh air from the environment and discharged (preferably purified) exhaust air from the first room or the ventilated rooms, whereby the respective advantages of the two basic operating states complement each other.

A room can also just be a section of room, especially for rooms with a floor area larger than 15m ² .

The air parameter is a parameter that describes the condition of the air and can also be measured, which can be used in particular to indicate air quality. A concentration or an amount of volatile organic compounds, a concentration or an amount of carbon dioxide or a concentration or an amount of oxygen in the air may be mentioned as non-limiting examples of the air parameter.

By controlling the ventilation system depending on the determined difference in the first room, an optimized control of the air parameter there can be implemented for the first room, in the course of which a desired air quality or a desired value of the air parameter determining this is achieved comparatively quickly and this is also stable can be held.

By using the determined difference, a ventilation requirement can advantageously be quantified, which in turn enables a particularly resource-saving operation of the ventilation system, which, among other things, reduces operating costs and increases the service life of the ventilation system. For example, the operating performance of the ventilation system can be reduced as soon as the actual value sufficiently approaches the provided setpoint of the air parameter to be controlled.

Furthermore, the trust and sense of comfort of a user of the ventilation system can be improved by quickly reaching the desired setpoint.

When taking into account the difference determined in the course of controlling the ventilation system, it goes without saying that, depending on the type of air parameter to be controlled, it is advisable to introduce a sign convention that reflects whether the air parameter to be controlled should generally be reduced to a desired setpoint ( for example, reducing a carbon dioxide concentration as a selected air parameter in the room to be ventilated) or should be increased to a desired setpoint (for example, increasing an oxygen concentration as a selected air parameter in the room to be ventilated).

ΔL_n bezeichnet hierbei die im Zuge des Steuerns zu berücksichtigende Differenz, L_n,Soll den bereitgestellten Sollwert und L_n,Ist den erfassten Istwert der zu steuernden Luftkenngröße L in einem beliebigen Raum n des Gebäudes.The following sign convention, mentioned only as an example, is recommended when taking into account the determined difference in the air parameter L to be controlled: $$\mathrm{\Delta }{\text{L}}_{\text{n}}=\{\begin{array}{c}{\text{L}}_{\text{n}\text{,Should}}-L_{\text{n}\text{,Is}},{\text{if L}}_{\text{n}\text{,Is}}{\text{on L}}_{\text{n}\text{,Should}}\text{erh}\ddot{\text{O}}\text{ht should be}\\ {\text{L}}_{\text{n}\text{,Is}}-{\text{L}}_{\text{n}\text{,Should}},{\text{if L}}_{\text{n}\text{,Is}}{\text{on L}}_{\text{n}\text{,Should}}\text{should be lowered}\end{array}.$$

ΔL _n denotes the difference to be taken into account during the control, L _n,Soll the setpoint provided and L _n,Ist the recorded actual value of the air parameter L to be controlled in any room n of the building.

The above sign convention is merely a non-limiting example of a control direction that is preferably to be taken into account in the course of the method with the aim of increasing or decreasing the air parameter to be controlled.

The dependence on the determined difference when controlling the ventilation system is not limited to a direct linear dependency, such that any mathematical expressions based on the determined difference can also be used, such as an amount of the determined difference or any p-th Power of the difference determined (with p≥2). The use of a quadratic power (p=2) has the advantage that an increasing deviation between the setpoint and actual value is weighted much more heavily than in the case of a simple power (p=1), i.e. a direct linear dependency.

In a preferred embodiment, controlling the ventilation system includes setting one or more operating parameters of the ventilation system that influence ventilation operation of the ventilation system, at least as a function of the determined difference in the first room.

For this purpose, controlling the ventilation system or setting the one or more operating parameters of the ventilation system that influence the ventilation operation of the ventilation system preferably includes setting an operating parameter of the ventilation system that regulates the generated ventilation flow, in particular for regulating a volume flow of the generated ventilation flow, depending on the determined difference in the ventilation system first room and / or setting an operating parameter of the first ventilation device that regulates a volume flow of the supply air flow to be supplied to the first room depending on the determined difference of the first room and / or setting an operating parameter that determines an operating state of the ventilation system, the operating state via the operating parameter at least between the recirculating air, the fresh air mode and particularly preferably between the recirculating air, the fresh air and the mixed mode can be switched.

In this way, the method preferably has several adjusting screws available for controlling the ventilation system, the adjustment of which is intended to minimize a deviation between the recorded actual value and the desired setpoint of the air parameter to be controlled in the first room based on the determined difference.

In a preferred embodiment, the setpoint provided in the first space is predetermined as a function of time.

In this way, the ventilation system can be controlled based on actual and generally time-varying needs, in the course of which, among other things, different setpoints can be specified at different times of the day.

In a preferred embodiment, the ventilation system is additionally controlled depending on the setpoint provided.

In this way, when controlling the heating system to achieve the setpoint provided, an undesirable and energetically unfavorable overshoot or undershoot of the air parameter to be controlled can be reduced.

In a preferred embodiment, the ventilation system is additionally controlled depending on an actual value of the air parameter in an area surrounding the building.

In this way, a state of outside air can be taken into account when controlling the heating system, in particular in fresh air or mixed operation of the ventilation system, so that, for example, in mixed operation, an amount of fresh air added can be reduced if excessive addition has a negative impact on reaching the setpoint the air parameter to be controlled in the first room, for example if the outside air is polluted.

• - eine Konzentration oder eine Menge von flüchtigen organischen Verbindungen;
• - eine Konzentration oder eine Menge von Kohlenstoffdioxid;
• - eine Konzentration oder eine Menge von Sauerstoff;
• - eine Konzentration oder eine Menge von Aerosolen;
• - eine Größe oder eine Konzentration oder eine Menge von Feststoffpartikeln;
• - eine Lufttemperatur;
• - eine Luftfeuchtigkeit

In a preferred embodiment, the air parameter to be controlled on which the method is based is one of the following variables or a combination of two or more of these variables:

• - a concentration or amount of volatile organic compounds;
• - a concentration or amount of carbon dioxide;
• - a concentration or amount of oxygen;
• - a concentration or quantity of aerosols;
• - a size or a concentration or an amount of solid particles;
• - an air temperature;
• - a humidity

The air parameter to be controlled is preferably a concentration or an amount of carbon dioxide, which can have a sleep-inducing or even toxic effect if the concentration is too high.

In a preferred embodiment, the building has N additional rooms to be ventilated, with N≥1, the ventilation system for each of the N additional rooms having at least one additional ventilation device of the respective additional room to be ventilated, coupled to the ventilation duct system, for supplying a ventilation flow generated on the ventilation flow based supply air flow into the respective further room, and wherein the method for each of the N further rooms includes providing a setpoint for the air parameter to be controlled by means of the ventilation system in the respective further room, detecting an actual value of the air parameter to be controlled in the respective further room and includes determining a difference between the setpoint provided and the recorded actual value of the air parameter to be controlled in the respective further room, the ventilation system also being controlled depending on the determined differences in the N further rooms.

In this way, all deviations between actual and target values in each room to be ventilated by the ventilation system are available to the method, on the basis of which the ventilation system can now be controlled in an optimized manner.

For example, an operating parameter of the ventilation system that regulates the generated ventilation flow, in particular the operating parameter that regulates the volume flow or the operating parameter that determines the operating state, can be set depending on the determined differences, preferably depending on a weighted or an unweighted average from all determined differences.

In this way, the operation of the ventilation system can be adapted to an overall ventilation requirement in the building, for example to provide a ventilation flow that is sufficient to provide all the supply air flows required to achieve the respective setpoint.

In a preferred embodiment, the method further comprises determining a maximum unweighted difference from a set of unweighted differences, comprising the determined difference of the first room and the determined differences of the N additional rooms, the ventilation system being controlled depending on the determined maximum unweighted difference , and in particular includes setting an operating parameter of the ventilation system that regulates the generated ventilation flow, in particular the operating parameter that regulates the volume flow or the operating parameter that determines the operating state, depending on the determined maximum unweighted difference.

Preferably, the set of unweighted differences is a set that includes an amount of the determined difference in the first room and amounts of the determined differences in the N further rooms.

L_n,Soll beschreibt hierbei den Sollwert der zu steuernden Luftkenngröße L in einem n-ten Raum der N+1 Räume des Gebäudes und L_n,Ist den Istwert der zu steuernden Luftkenngröße L im n-ten Raum.The maximum unweighted difference ΔL _max used to control the ventilation system can be specified in an equational and non-restrictive manner according to Equation 1, whereby in the sense of the sign convention mentioned above, an increase in the air parameter to be controlled to a desired setpoint with the help of the ventilation system is assumed below as an example and not in a restrictive manner shall be. $$\mathrm{\Delta }{\text{L}}_{\text{Max}}=\underset{\text{n}}{\text{Max}}\left({\text{L}}_{\text{n}\text{,Should}}-{\text{L}}_{\text{n}\text{,Is}}\right),\text{n}=\mathrm{1..}\text{N}+1$$

L _n,Soll describes the setpoint of the air parameter L to be controlled in an nth room of the N+1 rooms of the building and L _{n,Ist describes} the actual value of the air parameter L to be controlled in the nth room.

This means that the ventilation system will react particularly effectively to a ventilation requirement amounting to the maximum (unweighted) difference, which acts as a reference variable when controlling the ventilation system. The associated room is also referred to as the control room. This can ensure that the ventilation system is operated in such a way that even in the room with the highest deviation between the setpoint and actual value, the desired setpoint is reached and maintained comparatively quickly, meaning that the operating performance of the ventilation system is sufficient to ensure that the desired setpoint is reached even in the room with the highest Deviation to reach the desired target value comparatively quickly.

In a preferred embodiment, the method includes, for each of the N additional rooms, providing a weighting factor for the respective additional room, determining a weighted difference for the respective additional room by weighting the determined difference in the respective additional room with the weighting factor provided, whereby the The method further includes providing a weighting factor for the first room, determining a weighted difference for the first room by weighting the determined difference of the first room with a provided weighting factor for the first room and determining a maximum weighted difference from a set of weighted differences, comprising the determined weighted difference of the first room and the determined weighted differences of the N further rooms, and wherein the ventilation system is controlled depending on the determined maximum weighted difference.

kann dabei gleichungsmäßig und nicht beschränkend gemäß Gleichung 2 angegeben werden. $$\mathrm{\Delta }{\text{L}}_{\text{max}}^{*}=\underset{\text{n}}{\text{max}}\left(\text{Y}\left({\text{L}}_{\text{n}\text{,Soll}}-{\text{L}}_{\text{n}\text{,Ist}},{\text{g}}_{\text{n}}\right)\right),\text{n}=\mathrm{1..}\text{N}+1$$

L_n,Soll beschreibt hierbei den Sollwert der zu steuernden Luftkenngröße L in einem n-ten Raum der N+1 Räume des Gebäudes, L_n,Ist den Istwert der zu steuernden Luftkenngröße L im n-ten Raum und g_n den Gewichtungsfaktor im n-ten Raum. Die Funktion Y übernimmt hierbei die mathematische Gewichtung des ersten Funktionsarguments (der Differenz im n-ten Raum) mit dem zweiten Funktionsargument (Gewichtungsfaktor) und kann beispielsweise und nicht beschränkend gemäß einer der Gleichungen 3 oder 4 festgelegt werden, die eine lineare und eine quadratische Berücksichtigung der Differenz beschreiben. $$\text{Y}\left({\text{L}}_{\text{n}\text{,Soll}}-{\text{L}}_{\text{n}\text{,Ist}\text{,}}{\text{g}}_{\text{n}}\right)={\text{g}}_{\text{n}}\cdot \left({\text{L}}_{\text{n}\text{,Soll}}-{\text{L}}_{\text{n}\text{,Ist}}\right)$$

$$\text{Y}\left({\text{L}}_{\text{n}\text{,Soll}}-{\text{L}}_{\text{n}\text{,Ist}}{\text{,g}}_{\text{n}}\right)={\text{g}}_{\text{n}}\cdot {\left({\text{L}}_{\text{n}\text{,Soll}}-{\text{L}}_{\text{n}\text{,Ist}}\right)}^2$$

The maximum weighted difference used to control the ventilation system $\mathrm{\Delta }{\text{L}}_{\text{Max}}^{*}$

can be given equationally and non-restrictively according to equation 2. $$\mathrm{\Delta }{\text{L}}_{\text{Max}}^{*}=\underset{\text{n}}{\text{Max}}\left(\text{Y}\left({\text{L}}_{\text{n}\text{,Should}}-{\text{L}}_{\text{n}\text{,Is}},{\text{G}}_{\text{n}}\right)\right),\text{n}=\mathrm{1..}\text{N}+1$$

L _n,Soll describes the setpoint of the air parameter L to be controlled in an nth room of the N+1 rooms of the building, L _{n,Ist describes} the actual value of the air parameter L to be controlled in the nth room and g _n the weighting factor in the n -th room. The function Y takes over the mathematical weighting of the first function argument (the difference in the nth space) with the second function argument (weighting factor) and can be set, for example and not restrictively, according to one of equations 3 or 4, which take a linear and a quadratic consideration describe the difference. $$\text{Y}\left({\text{L}}_{\text{n}\text{,Should}}-{\text{L}}_{\text{n}\text{,Is}\text{,}}{\text{G}}_{\text{n}}\right)={\text{G}}_{\text{n}}\cdot \left({\text{L}}_{\text{n}\text{,Should}}-{\text{L}}_{\text{n}\text{,Is}}\right)$$

$$\text{Y}\left({\text{L}}_{\text{n}\text{,Should}}-{\text{L}}_{\text{n}\text{,Is}}{\text{,G}}_{\text{n}}\right)={\text{G}}_{\text{n}}\cdot {\left({\text{L}}_{\text{n}\text{,Should}}-{\text{L}}_{\text{n}\text{,Is}}\right)}^2$$

The use of the weighting factor is not limited to the above exemplary weighting by multiplication, but can also be used, for example, as an exponent of the difference (for example in the form of (|L _{n, target} - L _nact |) ^{g n} ).

The weighting factor, referred to as g _n above as an example, can, for example, assume values between “0” and “1”, where “1” denotes the highest and “0” the lowest weighting, with a difference determined in a room, for example according to equation 3 is multiplied by the weighting factor provided for this space. In this way, the different rooms can be prioritized, in the course of which a deviation from the setpoint in a high-priority room is more significant when controlling the ventilation system than a quantitatively the same deviation in a low-priority room.

• - eine Größe des zu belüftenden Raums, insbesondere eine Grundfläche oder ein Raumvolumen des zu belüftenden Raums;
• - eine durch die jeweilige Lüftungsvorrichtung maximal umsetzbarer Zuluftvolumenstrom;
• - eine Anzahl von Fenstern und/oder Türen des zu belüftenden Raums;
• - eine durch einen Benutzer angegebene Priorisierungsstufe des zu belüftenden Raums;
• - ein Detektionsergebnis einer zur Anwesenheitsdetektion im zu belüftenden Raum eingerichteten Detektionsvorrichtung des Lüftungssystems, welches eine Anwesenheit einer Person im zu belüftenden Raum beschreibt

In a preferred embodiment, the weighting factor is provided in the first room and/or the weighting factors are provided for each of the N additional rooms based on one or more of the following input variables related to the respective room to be ventilated:

• - a size of the room to be ventilated, in particular a floor area or a volume of the room to be ventilated;
• - a maximum supply air volume flow that can be implemented by the respective ventilation device;
• - a number of windows and/or doors of the room to be ventilated;
• - a user-specified prioritization level of the room to be ventilated;
• - a detection result of a detection device of the ventilation system set up to detect presence in the room to be ventilated, which describes the presence of a person in the room to be ventilated

In a preferred embodiment, the method further comprises determining a maximum setpoint of the air parameter to be controlled from a set of setpoints, consisting of the setpoint provided in the first room and the setpoints provided in each of the N further rooms, the ventilation system also being controlled depending on of the determined maximum setpoint value.

This can ensure that the control goal, namely reaching the setpoint, can be achieved for each of the rooms, especially if the target and actual values of the rooms are very different. Analogous to the weighted differences, the respective target values of a room can preferably also be weighted with the weighting factor provided for the room.

According to a second aspect of the invention, a ventilation system is provided for use in a building with at least one room to be ventilated, which has at least one ventilation system for generating a ventilation flow, a ventilation duct system for distributing the generated ventilation flow, a first ventilation device coupled to the ventilation duct system of a room to be ventilated first room of the building for supplying a supply air flow based on the generated ventilation flow into the first room, a control device for controlling the ventilation system, a first setpoint generator coupled to the control device for providing a setpoint for an air parameter to be controlled by means of the ventilation system in the first room and one with the first air sensor device coupled to the control device for detecting an actual value of the air parameter to be controlled in the first room, the control device being set up to control the ventilation system depending on a difference determined by the control device between the setpoint provided by the first setpoint generator and that detected by the first air sensor device To control the actual value of the air parameter to be controlled in the first room.

The ventilation system according to the second aspect of the invention is therefore suitable for carrying out the method according to the first aspect of the invention and correspondingly offers the associated advantages already described above.

The first and all further setpoint generators can include, for example, a human-machine interface (HMI), a rotary controller, a slider, or a digital input.

• - eine Konzentration oder eine Menge von flüchtigen organischen Verbindungen;
• - eine Konzentration oder eine Menge von Kohlenstoffdioxid;
• - eine Konzentration oder eine Menge von Sauerstoff;
• - eine Konzentration oder eine Menge von Aerosolen;
• - eine Größe oder eine Konzentration oder eine Menge von Feststoffpartikeln;
• - eine Lufttemperatur;
• - eine Luftfeuchtigkeit

Non-limiting examples of the first and all other air sensor devices are sensors that are set up to detect one or more of the following variables:

• - a concentration or amount of volatile organic compounds;
• - a concentration or amount of carbon dioxide;
• - a concentration or amount of oxygen;
• - a concentration or quantity of aerosols;
• - a size or a concentration or an amount of solid particles;
• - an air temperature;
• - a humidity

Preferably, the first and all further air sensor devices are CO ₂ sensors for detecting a concentration or an amount of carbon dioxide in the air.

The control device preferably comprises a microprocessor, a programmable logic circuit or the like, such that the difference to be determined is preferably determined digitally by the control device.

In a preferred embodiment, the control device is set up in the course of controlling the ventilation system to set one or more operating parameters of the ventilation system that influence ventilation operation of the ventilation system, at least as a function of the difference in the first room determined by the control device.

For this purpose, the control device is preferably coupled to the ventilation system and, in the course of controlling the ventilation system, is set up to set an operating parameter of the ventilation system that regulates the generated ventilation flow, in particular for regulating a volume flow of the generated ventilation flow, depending on the determined difference in the first room. Additionally or alternatively, the control device can be coupled to the first ventilation device and, in the course of controlling the ventilation system, can be set up to adjust a volume flow of the supply air flow to be supplied to the first room, regulating operating parameters of the first ventilation device depending on the determined difference in the first room.

The first setpoint generator preferably specifies the setpoint in the first room as a function of time.

Preferably, the control device is set up to additionally control the ventilation system depending on the setpoint provided by the setpoint generator in the first room.

Preferably, the ventilation system comprises an outside air sensor device coupled to the control device, which is set up to detect the air parameter in an environment of the building, in particular if the ventilation system is provided with fresh air from the environment for a fresh air or mixed operation, the control device further being set up for this purpose is to additionally control the ventilation system depending on an actual value of the air parameter detected by the outside air sensor device.

In a preferred embodiment, the building has N additional rooms to be ventilated, with N≥1, the ventilation system for each of the N additional rooms having at least one additional ventilation device of the respective additional room to be ventilated, coupled to the ventilation duct system, for supplying a ventilation flow based on the generated ventilation flow Supply air flow into the respective further room, a further setpoint generator coupled to the control device for providing a setpoint for an air parameter to be controlled by means of the ventilation system in the respective further room and at least one further air sensor device coupled to the control device for detecting an actual value of the air parameter to be controlled in the respective further room Room includes, and wherein the control device is set up, for each of the N further rooms, a respective difference between the setpoint provided by the further setpoint generator and the actual value detected by the further air sensor device in the respective one to determine another room and is further set up to additionally control the ventilation system depending on the determined differences in the N other rooms.

The setpoint generators (first setpoint generator and further setpoint generators) can preferably be designed in a common setpoint generator device, which is provided, for example, centrally in the building and gives a user the opportunity to centrally set the setpoint values in all rooms on this setpoint generator device, the setpoint generator device preferably having an input unit for includes digital input of the setpoints for one or more rooms of the room groups.

In the case of additional rooms, the control device is preferably set up to determine a maximum unweighted difference from a set of unweighted differences, comprising the determined difference of the first room and the determined differences of the N additional rooms, and the ventilation system depending on the determined maximum unweighted difference to control.

Preferably, the control device is set up to set an operating parameter of the ventilation system that regulates the generated ventilation flow, in particular for regulating a volume flow of the generated ventilation flow, depending on the determined maximum unweighted difference.

The ventilation system preferably comprises a prioritization device in which weighting factors for the first and for each of the N additional rooms are stored, which can be called up by the control device, in particular on a storage medium of the prioritization device. The control device is set up to determine a weighted difference for the first room and weighted differences for each additional room by weighting the determined difference in the first room or in the respective additional room with the respective weighting factor stored for the room. Furthermore, the control device is set up to determine a maximum weighted difference from a set of weighted differences, comprising the determined weighted difference of the first room and the determined weighted differences of the N additional rooms, and the ventilation system depending on the determined maximum weighted difference to control.

For the purposes of the following explanations, the weighting factors are to be understood as numerical factors, which in this case (and not as a limitation) can assume values between “0” and “1”, whereby the value “1” corresponds to the highest weighting.

The prioritization device can be designed as part of the control device or can be provided separately and correspondingly coupled to the control device.

The weighting factors for the individual rooms stored in the prioritization device can be stored via a variety of input devices and on the basis of a variety of assignment guidelines.

The prioritization device preferably comprises an input device via which the weighting factors for each room to be ventilated can be entered by a user in the form of a prioritization level. By way of example, the input device is set up to provide the user with the prioritization levels “no priority”, “low priority”, “medium priority” and “high priority” for selection for each room to be ventilated, which, after input by the user, are converted into associated weighting factors, for example Example “0”, “0.25”, “0.5” and “1” are implemented and stored in the prioritization device for retrieval.

Preferably, the input device can alternatively or additionally be used to enter a size of the room to be ventilated, in particular a base area or a volume of the room to be ventilated, from which an associated weighting factor is determined based on an assignment rule. For example, a room with a floor area of less than 10 m ² could be given a weighting factor of “0.25”, a room with a floor area of between 10 and 15 m ² a weighting factor of “0.5” and a room with a floor area of more than 15 m ² Weighting factor of “1” can be assigned.

Preferably, the prioritization device alternatively or additionally comprises one or more detection devices that are set up to detect the presence of a person in a respective room assigned to the detection device, the prioritization device being set up to determine the weighting factor for rooms with detection devices depending on a detection result to determine. For example, a weighting factor of “0.5” can be stored as standard for a room to be ventilated, whereby this is set to the value “1” in the event of a positive detection result from the detection device in said room (person present).

Preferably, the prioritization device can alternatively or additionally be set up to determine the weighting factor of a room to be ventilated based on a maximum supply air volume flow that can be implemented by the respective ventilation device of the room.

Preferably, the control device is set up to determine a maximum setpoint of the air parameter to be controlled from a set of setpoints, consisting of the setpoint provided by the setpoint first setpoint generator in the first room and the setpoints provided by the further setpoint generators in each of the N further rooms .

According to a third aspect of the invention, a control device for use in a ventilation system according to the second aspect of the invention is provided.

In this way, a retrofit option is provided through which an already existing ventilation system can be retrofitted with the control device in a simple and cost-effective manner in order to expand it to include the advantageous functionalities of the ventilation system according to the second aspect of the invention.

• 1 zeigt schematisch ein erstes Ausführungsbeispiel des erfindungsgemäßen Lüftungssystems.
• 2 zeigt schematisch ein zweites Ausführungsbeispiel des erfindungsgemäßen Lüftungssystems.
• 3 zeigt schematisch ein drittes Ausführungsbeispiel des erfindungsgemäßen Lüftungssystems in Form eines pneumatischen Schaltplans.
• 4 zeigt ein schematisches Ablaufdiagramm eines ersten Ausführungsbeispiels des erfindungsgemäßen Verfahrens zum Steuern eines Lüftungssystems.
• 5 zeigt ein schematisches Ablaufdiagramm eines zweiten Ausführungsbeispiels des erfindungsgemäßen Verfahrens zum Steuern eines Lüftungssystems.
• 6 zeigt ein schematisches Ablaufdiagramm eines dritten Ausführungsbeispiels des erfindungsgemäßen Verfahrens zum Steuern eines Lüftungssystems.

Further aspects and their advantages as well as more specific embodiments of the aforementioned aspects and features are described below with the help of the drawings shown in the attached figures.

• 1 shows schematically a first exemplary embodiment of the ventilation system according to the invention.
• 2 shows schematically a second embodiment of the ventilation system according to the invention.
• 3 shows schematically a third embodiment of the ventilation system according to the invention in the form of a pneumatic circuit diagram.
• 4 shows a schematic flow diagram of a first exemplary embodiment of the method according to the invention for controlling a ventilation system.
• 5 shows a schematic flow diagram of a second exemplary embodiment of the method according to the invention for controlling a ventilation system.
• 6 shows a schematic flow diagram of a third exemplary embodiment of the method according to the invention for controlling a ventilation system.

It is emphasized that the present invention is in no way limited to the exemplary embodiments described below and their embodiment features. The invention further includes modifications of the exemplary embodiments mentioned, in particular those consisting of modifications and/or combinations of individual or several features of the exemplary embodiments described within the scope of Scope of protection of the independent claims emerge.

Detailed character description

1 shows schematically a first exemplary embodiment of the ventilation system 100 according to the invention.

The ventilation system 100 includes a ventilation system 10 for generating a ventilation flow, a ventilation duct system 20 for distributing the generated ventilation flow, a first ventilation device 31 coupled to the ventilation duct system 20 of a first room 30 of the building to be ventilated for supplying a supply air flow based on the generated ventilation flow into the first room 30, a controller 40 for controlling the ventilation system 100, a setpoint generator 41 coupled to the controller 40 for providing a desired value for an air parameter to be controlled by means of the ventilation system 100 in the first room 30 and an air sensor 32 coupled to the controller 40 for detecting a Actual value of the air parameter to be controlled in the first room 30.

In the present case, the ventilation system 10 is set up to be operated in a fresh air mode, a recirculation mode or a mixed mode and for the latter includes a mixing device 11. The ventilation System 10 is connected to an environment 200 of the building and can, on the one hand, receive fresh air from this and, on the other hand, can discharge exhaust air discharged from the first room 30 through the ventilation device 31 into this. In recirculation mode, there is no exchange of air between the ventilation system 10 and the environment 200.

The mixing device 11 is set up to proportionally mix exhaust air and fresh air in order to provide the ventilation flow. The mixing device 11 preferably further comprises a cleaning filter, not shown here, in order to clean the exhaust air mixed into the fresh air during the mixing operation.

The ventilation flow generated by the ventilation system 10 is at least partially directed via the ventilation duct system 20 to the ventilation device 31 of the first room 30. The ventilation device 31 introduces the supply air flow based on the ventilation flow provided by the ventilation duct system 20 into the first room 30. This is done via a supply air device, not shown here, of the ventilation device 31. The ventilation device 31 preferably comprises an exhaust air device, not shown here, in order to remove air from the first room 30 and thus, in interaction with the supply air flow, to bring about an air exchange in the first room 30.

The air sensor 32 is set up to detect the air parameter to be controlled by measuring it. The air parameter in the present case is, by way of example and not by way of limitation, a carbon dioxide concentration, which is crucial for air quality in closed rooms, especially when people are in them. In this case, the air sensor 32 is designed as a carbon dioxide sensor. The ventilation system 100 is generally not limited to one air sensor or one air sensor device per room. Each room preferably has a large number of air sensor devices, with the actual value of the air parameter to be controlled used to determine the difference preferably being one The average value is the actual values recorded by the plurality of air sensor devices.

The controller 40 is coupled at least to the ventilation system 10, the setpoint generator 41 and the air sensor 32 and is set up to control the ventilation system 100 or the ventilation system 10 depending on a difference determined by the controller 40 between the setpoint provided by the setpoint generator 41 and the by to control the actual value of the air parameter to be controlled in the first room 30 detected by the air sensor 32.

In particular, the controller 40 is set up to set an operating parameter of the ventilation system 10 that regulates the generated ventilation flow depending on the determined difference in the first room 30.

The ventilation system 100 thus offers the possibility of achieving a desired setpoint of the air parameter to be controlled in the first room 30 comparatively quickly and also keeping it stable, with a particularly resource-saving operation of the ventilation system 100, which, among other things, reduces operating costs and extends the service life of the ventilation system 100 can be increased.

2 shows schematically a second embodiment of the ventilation system 100 according to the invention of a building with two rooms to be ventilated, a first room 30 and a second, further room 30b.

The ventilation system 100 includes a ventilation system 10 for generating a ventilation flow, a ventilation duct system 20 for distributing the generated ventilation flow, a first ventilation device 31 of the first room 30 of the building to be ventilated, coupled to the ventilation duct system 20, for supplying a supply air flow based on the generated ventilation flow into the first room 30, a second ventilation device 31b, coupled to the ventilation duct system 20, of the second room 30b of the building to be ventilated for supplying a supply air flow based on the generated ventilation flow into the second room 30b, a controller 40 for controlling the ventilation system 100, one with the controller 40 coupled first setpoint generator 41 for providing a setpoint for an air parameter to be controlled by means of the ventilation system 100 in the first room 30, a second setpoint generator 41b coupled to the controller 40 for providing a setpoint for an air parameter to be controlled by means of the ventilation system 100 in the second room 30b, a first air sensor 32 coupled to the controller 40 for detecting an actual value of the air parameter to be controlled in the first room 30 and a second air sensor 32b coupled to the controller 40 for detecting an actual value of the air parameter to be controlled in the second room 30b.

The ventilation system 10 is preferably analogous to the ventilation system of the first exemplary embodiment 1 constructed The ventilation flow generated by the ventilation system 10 is distributed over the ventilation duct system 20 and is provided to the two ventilation devices 31, 31b as a basis for the respective supply air flow. The ventilation devices 31, 31b can be designed in the same way as the ventilation device of the first exemplary embodiment 1 .

The controller 40 is coupled at least to the ventilation system 10, the setpoint generators 41, 41b and the air sensors 32, 32b and is set up to control the ventilation system 100 or the ventilation system 10 depending on differences determined by the controller 40 between the setpoint generator 41 , 41b provided setpoint and the actual value of the air parameter to be controlled in the first and second rooms 30, 30b detected by the respective air sensor 32, 32b.

ΔL_max bezeichnet die maximale - in diesem Fall ungewichtete - Differenz, L_1,Soll und L_2,Soll die Sollwerte des ersten und des zweiten Sollwertgebers 41, 41b und L_1,Ist und L_2,Ist die erfassten Istwerte des ersten und des zweiten Luftsensor 32, 32b. ΔL_max dient dabei der Steuerung 40 als Führungsgröße.The controller 40 is specifically set up to determine the maximum difference from the determined differences according to the following equation 5, which serves as a reference variable when controlling the ventilation system 100, such that the controller 40 is set up to control the ventilation system 100 or the ventilation system 10 to be controlled depending on the maximum difference determined. $$\mathrm{\Delta }{\text{L}}_{\text{Max}}=\text{Max}\left(\left({\text{<figure-callout id="1" label="L" filenames="DE102022108935A1\_0008.png,DE102022108935A1\_0009.png" state="{{state}}">L</figure-callout>}}_{\text{1}\text{,Should}}-{\text{<figure-callout id="1" label="L" filenames="DE102022108935A1\_0008.png,DE102022108935A1\_0009.png" state="{{state}}">L</figure-callout>}}_{\text{1}\text{,Is}}\right),\left({\text{<figure-callout id="2" label="L" filenames="DE102022108935A1\_0009.png" state="{{state}}">L</figure-callout>}}_{\text{2}\text{,Should}}-{\text{<figure-callout id="2" label="L" filenames="DE102022108935A1\_0009.png" state="{{state}}">L</figure-callout>}}_{\text{2}\text{,Is}}\right)\right)$$

ΔL _max denotes the maximum - in this case unweighted - difference, L _{1, setpoint} and L _{2, setpoint} the setpoint values of the first and second setpoint generators 41, 41b and L _{1, actual} and L _{2, is} the recorded actual values of the first and second second air sensor 32, 32b. ΔL _max serves as a reference variable for the controller 40.

In particular, the controller 40 is set up to set an operating parameter of the ventilation system 10 that regulates the generated ventilation flow as a function of the determined maximum difference ΔL _max .

As a result, the ventilation system 100 will react particularly effectively to a ventilation requirement amounting to the maximum difference. The associated room 30 or 30b is also referred to as the management room. This can ensure that the ventilation system 100 is operated in such a way that the desired setpoint is reached and maintained comparatively quickly even in the room with the highest deviation between the setpoint and actual value, i.e. a The operating performance of the ventilation system 100 or the ventilation system 10 is sufficient to achieve the desired setpoint even in the room with the highest deviation.

3 shows schematically a third embodiment of the ventilation system 100 according to the invention in the form of a pneumatic circuit diagram.

The ventilation system 100 includes a ventilation system 10 for generating a ventilation flow, a ventilation duct system (not marked here) for distributing the generated ventilation flow, a first ventilation device 31 coupled to the ventilation duct system 20 of a first room 30 of the building to be ventilated for supplying a supply air flow based on the generated ventilation flow in the first room 30, a control 40 for controlling the ventilation system 100, a setpoint generator (not shown here) coupled to the control 40 for providing a setpoint for an air parameter to be controlled by means of the ventilation system 100 in the first room 30 and an air sensor coupled to the control 40 32 for recording an actual value of the air parameter to be controlled in the first room 30.

In the pneumatic network shown, the bold lines designate connecting channels between the individual components of the ventilation system 100, with the arrows shown as triangles indicating corresponding flow directions of the air in the ventilation system 100.

The ventilation system 10 in the present case comprises a first blower unit 12, a second blower unit 13, a mixing device 11 and an air temperature controller 14. The first blower unit 12 is set up to convert a volume flow in the direction of the first room 30 to be ventilated, whereas the second blower unit is designed to convert a volume flow is set up towards an environment 200 of the building (directed away from the first room 30 to be ventilated).

The ventilation system 10 is connected to the environment 200 of the building via appropriate connecting channels and is in the present case set up in a fresh air mode, a recirculation mode or to be operated in a mixed operation. The ventilation system 10 can, on the one hand, receive fresh air from the environment 200 and, on the other hand, exhaust air removed from the first room 30 can be discharged into it.

The mixing device 11 is set up in the given pneumatic network to determine the operating state (fresh air, recirculated air or mixed operation) of the ventilation system 10 by adjusting the valve positions of valve flaps 15 (not all valve flaps are provided with the reference number 15) and also a mixing ratio between Fresh air and exhaust air must be adjusted during mixed operation. If, for example, the top and bottom valve flaps 15 of the mixing device 11 are closed (middle valve flap 15 remains open), then there is a recirculation mode in which the first blower unit 12 circulates the air in the ventilation system 100 without, for example, fresh air from the environment 200 being mixed in .

In particular, a volume flow of the ventilation flow in the ventilation system 100 can be adjusted via the blower units 12, 13 coupled to the controller 40, in the course of which a blower power of one or both blower units 12, 13 is adjusted.

The air temperature controller 14 of the ventilation system 100 is set up to control the temperature of the ventilation flow generated as a basis for the supply air flow for the first room 30 and is preferably also set up to adjust the humidity of the ventilation flow.

In the present case, the ventilation device 31 for the first room comprises a lower supply air opening for supplying the supply air flow into the first room 30 and an upper exhaust air opening for removing exhaust air from the first room 30. Furthermore, the ventilation device comprises a temperature sensor 33, which is set up to generate an actual value of the Measure the temperature (T) of the supply air flow and provide it to the controller 40.

Arranged in the first room 30 is the air sensor 32, which in the present case is set up to measure both an actual value of a carbon dioxide concentration (CO ₂ ) and an actual value of an air temperature (T) in the first room 30 and to provide these to the controller 40.

In this case, the air parameter to be controlled by the ventilation system is the carbon dioxide concentration.

Furthermore, the ventilation system 100 is set up to always control a second air parameter in the first room 30, which in the present case is the air temperature. For this purpose, the ventilation system further comprises a temperature setpoint generator, not shown, for providing a setpoint for the air temperature in the first room 30.

The control 40 of the ventilation system includes a first control unit 40a for taking over the functionalities with regard to the air parameter of the carbon dioxide concentration to be controlled and a second control unit 40b for taking over the functionalities with regard to the second air parameter of the air temperature to be controlled.

The first control unit 40a is coupled at least to the blower units 12, 13 and the mixing device 11 of the ventilation system 10 as well as to the setpoint generator (not shown) and the air sensor 32 and is set up to control the ventilation system 10, in particular the blower units 12, 13 and the mixing device 11. depending on a difference determined by the first control unit 40a between the setpoint provided and the actual value of the carbon dioxide concentration in the first room 30 detected by the air sensor 32. In particular, the first control unit 40a is set up to set a blower power of one or both blower units or to set an operating state of the ventilation system 10 by adjusting the valve positions of the valve flaps 15 of the mixing device 11 and / or to set a mixing ratio between exhaust air and fresh air in mixed operation.

The second control unit 40b is coupled at least to the air temperature controller 14 and the temperature setpoint generator (not shown), the air sensor 32 and the temperature sensor 33 and is set up to control the ventilation system 10, in particular the air temperature controller 14, depending on a difference between the provided and determined by the second control unit 40b Temperature setpoint and the actual value of the air temperature in the first room 30 detected by the air sensor 32. In particular, the second control unit 40b is set up to set an operating parameter of the air temperature controller 14 that regulates the temperature of the supply air flow.

The second control unit 40b is preferably set up to control the air temperature controller 14 in additional dependence on the actual value of the temperature of the supply air flow detected by the temperature sensor 33.

By combining the first and second control units, a carbon dioxide concentration in the first room 30, which primarily determines the air quality, can advantageously be controlled particularly efficiently, without a drop in the air temperature in the first room 30, which may be perceived as uncomfortable, for example by supplying significant amounts colder and unheated fresh air from the environment.

4 shows a schematic flow diagram of a first exemplary embodiment of the method according to the invention for controlling a ventilation system.

The ventilation system comprises at least one ventilation system for generating a ventilation flow, a ventilation duct system for distributing the generated ventilation flow and at least one first ventilation device, coupled to the ventilation duct system, of a first room of a building to be ventilated for supplying a supply air flow based on the generated ventilation flow into the first room;

In step S11, a setpoint value is provided for an air parameter to be controlled by the ventilation system in the first room.

In step S12, an actual value of the air parameter to be controlled in the first room is recorded.

In step S13, a difference is determined between the setpoint provided from step S11 and the recorded actual value of the air parameter to be controlled in the first room from step S12.

In step S14, the ventilation system is controlled depending on the determined difference in the first room from step S13, preferably comprising step S14.1, in which an operating parameter of the ventilation system that regulates the generated ventilation flow is set depending on the determined difference in the first room, in particular for regulating a volume flow of the generated ventilation flow depending on the determined difference.

The above method has the advantage that by controlling the ventilation system depending on the determined difference in the first room, an optimized control of the air parameter there is implemented for the first room, in the course of which a desired value (setpoint) of the air parameter is achieved comparatively quickly and this can also be kept stable. By using the determined difference, a ventilation requirement can advantageously be quantified, which in turn enables a particularly resource-saving operation of the ventilation system, which, among other things, reduces operating costs and increases the service life of the ventilation system.

5 shows a schematic flow diagram of a second exemplary embodiment of the method according to the invention for controlling a ventilation system.

The ventilation system is intended for use in a building with N+1 (at N≥1) rooms to be ventilated and comprises a ventilation system for generating a ventilation flow, a ventilation duct system for distributing the generated ventilation flow and at least a first ventilation device coupled to the ventilation duct system ventilating first room of the building for supplying a supply air flow based on the generated ventilation flow into the first room and for each of the N further rooms at least one further ventilation device coupled to the ventilation duct system of the respective further room to be ventilated for supplying a supply air flow based on the generated ventilation flow into the respective additional room.

In step S21, a setpoint value is provided for an air parameter to be controlled by means of the ventilation system in the first room and, for each of the N further rooms, a respective setpoint value is provided for the air parameter to be controlled by means of the ventilation system in a respective further room.

In step S22, an actual value of the air parameter to be controlled is detected in the first room and, for each of the N further rooms, a respective actual value of the air parameter to be controlled is detected in the respective further room.

In step S23, differences are determined between the setpoint values provided room by room from step S21 and the recorded actual values of the air parameter to be controlled from step S22 for each of the N+1 rooms.

In step S24, the ventilation system is controlled depending on the differences in the N+1 rooms determined in step S23, preferably comprising step S24.1, in which an operating parameter of the ventilation system that regulates the generated ventilation flow is set depending on the determined differences in the N+ 1 rooms takes place, in particular depending on an average value of the differences determined between the N + 1 rooms.

In step S25, a time pause of a predetermined length takes place before a repeated process begins from step S22. In this way, continuous control of the ventilation system over time can be made possible.

6 shows a schematic flow diagram of a third exemplary embodiment of the method according to the invention for controlling a ventilation system.

The ventilation system corresponds to that in the course of 4 ventilation system described. The first three steps S31 to S33 of the third exemplary embodiment also correspond to the first three steps of the second exemplary embodiment 4 (S21=S31, S22=S32, S23=S33).

Starting from step S33, in step S34 a maximum unweighted difference is determined from a set of unweighted differences, comprising the differences of the N+1 rooms determined in step 33.

In step S35, the ventilation system is controlled depending on the maximum unweighted difference determined in step S34, preferably comprising step S35.1, in which an operating parameter of the ventilation system that regulates the generated ventilation flow is set depending on the determined maximum unweighted difference.

In step S36, a time pause of a predetermined length takes place before a repeated process begins from step S32. In this way, continuous control of the ventilation system over time can be made possible.

The above method has the advantage that the ventilation system will react particularly effectively to a ventilation requirement in the amount of the maximum (unweighted) difference, which therefore acts as a reference variable when controlling the ventilation system. This can ensure that the ventilation system is operated in such a way that In the room with the highest deviation between the setpoint and actual value, the desired setpoint is reached and maintained comparatively quickly, meaning that the operating performance of the ventilation system is sufficient to achieve the desired setpoint even in the room with the said highest deviation.

Exemplary embodiments of the present invention and their advantages have been described in detail above with reference to the accompanying figures.

It is emphasized again that the present invention is in no way limited to the exemplary embodiments described above and their embodiment features. The invention further includes modifications of the exemplary embodiments mentioned, in particular those consisting of modifications and/or combinations of individual or several features of the exemplary embodiments described within the framework the scope of protection of the independent claims.

List of reference symbols

10

Ventilation system

11

Mixing device

12

first blower unit

13

second blower unit

14

Air temperature controller

15

valve flaps

20

Ventilation duct system

30

first room

30b

second room

31, 31b

Ventilation device

32, 32b

Air sensor

33

Supply air temperature sensor

40

steering

40a

first control unit

40b

second control unit

41, 41b

Setpoint generator

42

Outdoor air sensor

100

Ventilation system

200

Vicinity

Claims (15)

Method for controlling a ventilation system (100) of a building with at least one room to be ventilated, comprising at least: - a ventilation system (10) for generating a ventilation flow; - a ventilation duct system (20) for distributing the ventilation flow generated; and - at least one first ventilation device (31), coupled to the ventilation duct system (20), of a first room (30) of the building to be ventilated for supplying a supply air flow based on the generated ventilation flow into the first room; wherein the method includes: - Providing a setpoint for an air parameter to be controlled by means of the ventilation system (1) in the first room (30); - Detecting an actual value of the air parameter to be controlled in the first room (30); - Determining a difference between the setpoint provided and the recorded actual value of the air parameter to be controlled in the first room (30); and - Controlling the ventilation system (100) depending on the determined difference in the first room (30). Procedure according to Claim 1 , characterized in that controlling the ventilation system (100) comprises one or more of the following steps: - Setting an operating parameter of the ventilation system (10) that regulates the generated ventilation flow depending on the determined difference in the first room (30), in particular for regulating a volume flow the ventilation flow generated; and - setting an operating parameter of the first ventilation device (31) that regulates a volume flow of the supply air flow to be supplied to the first room (30) depending on the determined difference in the first room (30). Method according to one of the preceding claims, characterized in that the setpoint value provided in the first space (30) is predetermined as a function of time Method according to one of the preceding claims, characterized in that the ventilation system (100) is additionally controlled depending on the setpoint value provided Method according to one of the preceding claims, characterized in that the ventilation system (100) is additionally controlled as a function of an actual value of the air parameter in an environment (200) of the building Method according to one of the preceding claims, characterized in that the air parameter to be controlled on which the method is based is one of the following variables: - a concentration or an amount of volatile organic compounds; - a concentration or amount of carbon dioxide; - a concentration or amount of oxygen; - a concentration or quantity of aerosols; - a size or a concentration or an amount of solid particles; - an air temperature; - a humidity Method according to one of the preceding claims, characterized in that the building has N further rooms (30b) to be ventilated, with N≥1, and the ventilation system (100) for each of the N further rooms (30b) comprises: - at least one the ventilation duct system (20) coupled further ventilation device (31b) of the respective further room (30b) to be ventilated for supplying a supply air flow based on the generated ventilation flow into the respective further room (30b); wherein the method for each of the N additional rooms comprises: - providing a setpoint for the air parameter to be controlled by means of the ventilation system (100) in the respective additional room (30b); - Detecting an actual value of the air parameter to be controlled in the respective additional room (30b); - Determining a difference between the setpoint provided and the recorded actual value of the air parameter to be controlled in the respective additional room (30b); wherein the ventilation system (100) is additionally controlled depending on the determined differences between the N additional rooms (30b). Procedure according to Claim 7 , characterized in that the method further comprises: - determining a maximum unweighted difference from a set of unweighted differences, comprising the determined difference of the first room (30) and the determined differences of the N further rooms (30b); wherein the ventilation system (100) is controlled depending on the determined maximum unweighted difference, and in particular includes: - Setting an operating parameter of the ventilation system (10) that regulates the generated ventilation flow depending on the determined maximum unweighted difference, in particular for regulating a volume flow of the generated ventilation flow. Procedure according to one of the Claims 7 , characterized in that the method comprises for each of the N additional rooms (30b): - providing a weighting factor for the respective additional room (30b); - Determining a weighted difference for the respective further room (30b) by weighting the determined difference in the respective further room (30b) with the weighting factor provided; and the method further comprises: - providing a weighting factor for the first space (30); - Determining a weighted difference for the first room (30) by weighting the determined difference of the first room (30) with a weighting factor provided for the first room (30); - Determining a maximum weighted difference from a set of weighted differences, comprising the determined weighted difference of the first room (30) and the determined weighted differences of the N further rooms (30b); wherein the ventilation system (100) is controlled depending on the determined maximum weighted difference Procedure according to Claim 9 , characterized in that the provision of the weighting factor in the first room (30) and/or the provision of the weighting factors for each of the N further rooms (30b) is based on one or more of the following related to the respective room (30, 30b) to be ventilated Input variables: - a size of the room to be ventilated (30, 30b), in particular a base area or a volume of the room to be ventilated (30, 30b); - a maximum supply air volume flow that can be implemented by the respective ventilation device (31, 31b); - a number of windows and/or doors of the room to be ventilated (30, 30b); - a user-specified prioritization level of the room to be ventilated (30, 30b); - a detection result of a detection device of the ventilation system (100) set up to detect presence in the room (30, 30b) to be ventilated, which describes the presence of a person in the room (30, 30b) to be ventilated Procedure according to one of the Claims 7 until 10 , characterized in that the method further comprises: - determining a maximum setpoint of the air parameter to be controlled from a set of setpoints, consisting of the setpoint provided in the first room (30) and the setpoints provided in each of the N further rooms (30b); wherein the ventilation system (100) is also controlled depending on the determined maximum setpoint Ventilation system (100) for use in a building with at least one room to be ventilated, at least comprising: - a ventilation system (10) for generating a ventilation flow; - a ventilation duct system (20) for distributing the ventilation flow generated; - a first ventilation device (31) of a first room (30) of the building to be ventilated, coupled to the ventilation duct system (20), for supplying a supply air flow based on the ventilation flow generated into the first room (30); - a control device (40) for controlling the ventilation system (100); - a first setpoint generator (41) coupled to the control device (40) for providing a setpoint for an air parameter in the first room (30) to be controlled by means of the ventilation system (100); and - a first air sensor device (32) coupled to the control device (40) for detecting an actual value of the air parameter to be controlled in the first room (30); wherein the control device (40) is set up to control the ventilation system (100) depending on a difference determined by the control device (40) between the setpoint provided by the first setpoint generator (41) and the actual value detected by the first air sensor device (32). controlling air parameter in the first room (30). Ventilation system (100). Claim 12 , characterized in that the control device (40) is coupled to the ventilation system (10) and, in the course of controlling the ventilation system (100), is set up to regulate the generated ventilation flow operating parameter of the ventilation system (10) depending on the determined difference in the first room to set, in particular an operating parameter that regulates the volume flow of the ventilation flow generated, and / or the control device (40) is coupled to the first ventilation device (31) and is set up in the course of controlling the ventilation system (100), a volume flow of the first room (30 ) to adjust the supply air flow regulating operating parameters of the first ventilation device (31) depending on the determined difference in the first room (30). Ventilation system (100) according to one of the Claims 12 or 13 , characterized in that the building has N additional rooms (30b) to be ventilated, with N≥1, and the ventilation system (100) for each of the N additional rooms (30, 30b) comprises: - at least one connected to the ventilation duct system (20) coupled further ventilation device (31b) of the respective further room (30b) to be ventilated for supplying a supply air flow based on the generated ventilation flow into the respective further room (30, 30b); - a further setpoint generator (41b) coupled to the control device (40) for providing a setpoint for an air parameter to be controlled by means of the ventilation system (100) in the respective further room (30b); and - at least one further air sensor device (32b) coupled to the control device (40) for detecting an actual value of the air parameter to be controlled in the respective further room (30b); wherein the control device (40) is set up, for each of the N further rooms (30b), a respective difference between the setpoint provided by the further setpoint generator (32b) and the actual value detected by the further air sensor device (31b) in the respective further room (30b) to be determined and is further set up to additionally control the ventilation system (100) depending on the determined differences in the N additional rooms (30b). Control device (40) for use in a ventilation system (100) according to one of Claims 12 until 14 .

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