EP4261469A1 - Procédé de commande d'un système de ventilation, système de ventilation et dispositif de commande - Google Patents

Procédé de commande d'un système de ventilation, système de ventilation et dispositif de commande Download PDF

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Publication number
EP4261469A1
EP4261469A1 EP23165142.3A EP23165142A EP4261469A1 EP 4261469 A1 EP4261469 A1 EP 4261469A1 EP 23165142 A EP23165142 A EP 23165142A EP 4261469 A1 EP4261469 A1 EP 4261469A1
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EP
European Patent Office
Prior art keywords
room
ventilation
ventilation system
air
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23165142.3A
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German (de)
English (en)
Inventor
Paul Skiba
Jan Strubel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Viessmann Holding International GmbH
Original Assignee
Viessmann Climate Solutions SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Viessmann Climate Solutions SE filed Critical Viessmann Climate Solutions SE
Publication of EP4261469A1 publication Critical patent/EP4261469A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/64—Airborne particle content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/66—Volatile organic compounds [VOC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/76—Oxygen

Definitions

  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • exhaust air discharged from the first room (or any further room with a ventilation device of the ventilation system) is preferably discharged into the surroundings of the building by the ventilation device.
  • the ventilation system preferably includes a cleaning and/or a filter device for cleaning the fresh air, for example in order to free it of pollen, dirt particles or pathogens from the surroundings of the building.
  • 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
  • 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.
  • 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.
  • the trust and sense of comfort of a user of the ventilation system can be improved by quickly reaching the desired setpoint.
  • ⁇ L n ⁇ L n , Should ⁇ L n , Is , if L n , Is on L n , Should elevated become should L n , Is ⁇ L n , Should , if L n , Is on L n , Should lowered become should .
  • ⁇ L 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.
  • 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 dependence, such that any mathematical expressions based on the determined difference can also be used, such as an amount of the determined difference or any pth power the determined difference (with p ⁇ 2).
  • 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.
  • 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.
  • 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.
  • the setpoint provided in the first space is predetermined as a function of time.
  • 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.
  • the ventilation system is additionally controlled depending on the setpoint provided.
  • the ventilation system is additionally controlled depending on an actual value of the air parameter in an area surrounding the building.
  • 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.
  • 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.
  • 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
  • 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 one that determines the operating state
  • Operating parameters depending on the differences determined, preferably depending on a weighted or an unweighted average from all differences determined.
  • 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
  • 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
  • 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
  • the maximum unweighted difference ⁇ L 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.
  • ⁇ L Max Max n L n
  • Is , n 1 . . 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.
  • 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 management room. This ensures 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 in order to achieve the desired setpoint comparatively quickly, even in the room with the highest deviation.
  • 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
  • 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
  • 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.
  • weighting factor is not limited to the exemplary weighting by multiplication above, but can also be used as an exponent of the difference, for example in the form of (
  • the weighting factor designated above as an example with g n , 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 space, for example according to equation 3 is multiplied by the weighting factor provided for this space.
  • 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.
  • 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
  • the respective target values of a room can preferably also be weighted with the weighting factor provided for the room.
  • a ventilation system 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.
  • HMI human-machine interface
  • rotary controller a rotary controller
  • slider a slider
  • digital input a digital input.
  • 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.
  • 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.
  • 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.
  • 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.
  • control device is set up to additionally control the ventilation system depending on the setpoint provided by the setpoint generator in the first room.
  • 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.
  • 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, and wherein the control device is set up to determine 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 further room and is further set up to additionally control the ventilation system in To control the dependence of the determined differences of the N additional rooms.
  • the 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
  • 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.
  • 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.
  • 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.
  • weighting factors are to be understood as numerical factors, which in the present case (and not as a limitation) can assume values between “0" and “1", with the value "1" corresponding 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.
  • 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.
  • 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.
  • a room with a floor area of less than 10 m 2 could have a weighting factor of "0.25"
  • a room with a floor area larger than 15 m 2 a weighting factor of "1" can be assigned.
  • 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, wherein the prioritization device is set up to determine the weighting factor for rooms with a detection device depending on a detection result.
  • a weighting factor of "0.5" can be stored as standard for a room to be ventilated, with this being set to the value "1" in the event of a positive detection result from the detection device in said room (person present).
  • 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.
  • 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 .
  • a control device for use in a ventilation system according to the second aspect of the invention is provided
  • Fig. 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.
  • 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, from it exhaust air discharged from the first room 30 through the ventilation device 31 into this.
  • 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 ventilation duct system 20 into 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.
  • 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 plurality of air sensor devices, the actual value of the air parameter to be controlled used to determine the difference being preferably an average of 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.
  • 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.
  • Fig. 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 ventilation flow based on the generated ventilation flow supply air 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, a a first setpoint generator 41 coupled to the controller 40 for providing a target value 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 target value 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
  • the ventilation system 10 is preferably analogous to the ventilation system of the first exemplary embodiment Fig. 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 Fig. 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.
  • 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.
  • ⁇ L Max Max L 1 , Should ⁇ L 1 , Is , L 2 , Should ⁇ L 2 , Is
  • ⁇ L 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.
  • ⁇ L max serves as a reference variable for the controller 40.
  • 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 ⁇ L max .
  • 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 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 100 or the ventilation system 10 is sufficient in order to achieve the desired target value even in the room with the said highest deviation.
  • Fig. 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.
  • 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 to be operated in a fresh air mode, a recirculated air mode or a mixed mode.
  • the ventilation system 10 can, on the one hand 200 fresh air is obtained from the environment and, on the other hand, exhaust air removed from the first room 30 is removed into this.
  • 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 .
  • 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.
  • 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.
  • the air sensor 32 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.
  • CO 2 carbon dioxide concentration
  • T air temperature
  • the air parameter to be controlled by the ventilation system is the carbon dioxide concentration.
  • the ventilation system 100 is set up to always control a second air parameter in the first room 30, which in this case is the air temperature.
  • 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.
  • 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.
  • 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.
  • 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.
  • Fig. 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;
  • step S11 a setpoint value is provided for an air parameter to be controlled by the ventilation system in the first room.
  • step S12 an actual value of the air parameter to be controlled in the first room is recorded.
  • 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.
  • 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.
  • 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.
  • Fig. 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.
  • 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 additional rooms providing a respective setpoint value for the air parameter to be controlled by means of the ventilation system in a respective further room.
  • 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.
  • 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.
  • 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.
  • step S25 there is a pause of a predetermined length before a repeated process begins starting from step S22. In this way, continuous control of the ventilation system over time can be made possible.
  • Fig. 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 Fig. 4 ventilation system described.
  • 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.
  • 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.
  • step S36 a pause of a predetermined length takes place before a repeated process begins starting 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 is particularly targeted at a ventilation requirement equal to the maximum (unweighted) difference will react, 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 even in the room with the highest deviation between the setpoint and actual value, the desired setpoint is reached and maintained comparatively quickly, i.e. a The operating performance of the ventilation system is sufficient to achieve the desired setpoint even in the room with the highest deviation.

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EP23165142.3A 2022-04-12 2023-03-29 Procédé de commande d'un système de ventilation, système de ventilation et dispositif de commande Pending EP4261469A1 (fr)

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Citations (6)

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EP0851179A2 (fr) * 1996-12-27 1998-07-01 Albert Bauer Dispositif de conditionnement d'air
DE20207747U1 (de) * 2002-05-17 2002-08-01 LTG Aktiengesellschaft, 70435 Stuttgart Belüftungssystem von Tierkäfigen sowie Tierkäfiganordnung
EP1703221A1 (fr) * 2005-02-15 2006-09-20 Lg Electronics Inc. Système de ventilation et procédé de contrôle de celui-ci
KR20190115565A (ko) * 2018-04-03 2019-10-14 엘지전자 주식회사 공기조화기의 실내기
EP3569943A1 (fr) * 2017-01-26 2019-11-20 Daikin Industries, Ltd. Système de ventilation
CN113465073A (zh) * 2021-06-21 2021-10-01 青岛海尔空调电子有限公司 通风系统的控制方法及通风系统

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US7758407B2 (en) 2006-09-26 2010-07-20 Siemens Industry, Inc. Ventilation control based on occupancy
US8442694B2 (en) 2010-07-23 2013-05-14 Lg Electronics Inc. Distribution of airflow in an HVAC system to optimize energy efficiency and temperature differentials
US9031706B2 (en) 2010-07-28 2015-05-12 Lg Electronics Inc. Air conditioner and method for controlling the same
US20190257537A1 (en) 2018-02-20 2019-08-22 Ecotel Inc. Controllable duct system for multi-zone climate control
EP3683512A1 (fr) 2019-01-21 2020-07-22 Möhlenhoff GmbH Unité de régulation pour une installation de ventilation, de préférence pour une installation d'aération contrôlée des locaux d'habitation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851179A2 (fr) * 1996-12-27 1998-07-01 Albert Bauer Dispositif de conditionnement d'air
DE20207747U1 (de) * 2002-05-17 2002-08-01 LTG Aktiengesellschaft, 70435 Stuttgart Belüftungssystem von Tierkäfigen sowie Tierkäfiganordnung
EP1703221A1 (fr) * 2005-02-15 2006-09-20 Lg Electronics Inc. Système de ventilation et procédé de contrôle de celui-ci
EP3569943A1 (fr) * 2017-01-26 2019-11-20 Daikin Industries, Ltd. Système de ventilation
KR20190115565A (ko) * 2018-04-03 2019-10-14 엘지전자 주식회사 공기조화기의 실내기
CN113465073A (zh) * 2021-06-21 2021-10-01 青岛海尔空调电子有限公司 通风系统的控制方法及通风系统

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