EP4379279A1 - Hygienisches belüftungssystem und verfahren zur steuerung solch eines belüftungssystems - Google Patents

Hygienisches belüftungssystem und verfahren zur steuerung solch eines belüftungssystems Download PDF

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Publication number
EP4379279A1
EP4379279A1 EP23213416.3A EP23213416A EP4379279A1 EP 4379279 A1 EP4379279 A1 EP 4379279A1 EP 23213416 A EP23213416 A EP 23213416A EP 4379279 A1 EP4379279 A1 EP 4379279A1
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EP
European Patent Office
Prior art keywords
exhaust
ventilation
hygienic
air
exhaust 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
EP23213416.3A
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English (en)
French (fr)
Inventor
Luc Louis Renson
Koen Maertens
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.)
Vero Duco NV
Original Assignee
Vero Duco NV
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 Vero Duco NV filed Critical Vero Duco NV
Publication of EP4379279A1 publication Critical patent/EP4379279A1/de
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
    • F24F11/70—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
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/0025—Ventilation using vent ports in a wall
    • 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

Definitions

  • the current invention involves a method for controlling a hygienic balanced ventilation system for ventilative cooling of a building.
  • the current invention also refers to a hygienic ventilation system and a hybrid ventilation system comprising this type of hygienic ventilation system as a central ventilation system.
  • the current invention also involves a computer-implemented method, a data processing device, a computer program that contains instructions to have a hygienic ventilation system perform the steps of the aforementioned method and a computer-readable storage medium containing the computer program.
  • a passive alternative is naturally cooling with air through actively opening shutters (or windows), but because sometimes there is no availability of two facades and/or there is no skylight, natural flows are often limited, so big shutters are required or a limited cooling capacity is realized.
  • the current invention and the preferred designs of it have the objective of offering a solution for one or more of the aforementioned disadvantages.
  • One objective of the invention can therefore be to create a ventilation system that is also suitable for ventilative cooling of the same residence.
  • Another objective of the invention can therefore be to create a method for controlling a hygienic ventilation system that is suitable for ventilative cooling of a residence.
  • a hygienic ventilation system for hygienic ventilation and ventilative cooling of the same residence during summer nights.
  • the current invention is a method for controlling a hygienic ventilation system.
  • hygienic ventilation system refers to the whole of various components that ensure that the air in rooms of the building are refreshed in a controlled manner.
  • the invention provides for a method for controlling a hygienic ventilation system comprising an exhaust flow passage that extends between a main exhaust connection and at least one auxiliary exhaust connection and exhaust flow control units to ensure an air exhaust flow from the at least one auxiliary exhaust connection and exhaust flow control units to ensure an air exhaust flow from the main exhaust connection via the exhaust flow passage to the main exhaust connection.
  • connection refers to an open end where an air passage may or may not be connected, such as an opening in the housing of the ventilation box or the end of an air passage.
  • the invention comprises a method for the regulation of this type of hygienic ventilation system to cool a building through ventilation.
  • the method involves the steps of controlling the exhaust flow regulation elements based on one or more parameters related to the ventilation mode of the hygienic ventilation system so that when the hygienic ventilation system is in a hygienic ventilation mode, where exhaust air flows through each auxiliary exhaust connection with a zonal air exhaust flow rate of Q H_ETA that corresponds to a zonal hygienic air exhaust flow rate Q H_HYG related to the air quality in one or more rooms of the building associated with the respective auxiliary exhaust connection.
  • Each zonal hygienic exhaust air flow lies in a respective pre-set hygienic ventilation range between a minimum set zonal ventilation flow rate and a maximum set zonal ventilation flow rate.
  • These set ventilation flow rates are preferably determined based on the legal ventilation standards of the space to be ventilated.
  • This method also involves the steps of controlling the exhaust flow regulation elements based on one or more parameters related to the ventilation mode of the hygienic ventilation system so that when the hygienic ventilation system is in a summer night ventilation mode, for at least one of the auxiliary exhaust connections, the zonal air exhaust flow rate of Q H_ETA corresponds to a zonal hygienic air exhaust flow rate Q H_HYG and a zonal thermal flow rate.
  • the zonal exhaust air flow rate Q H_ETA is higher than the maximum set zonal ventilation rate Q H_SET,MAX .
  • the zonal thermal output is at least 100 m 3 /hour or at least 150 m 3 /hour.
  • the air exhaust rate Q ETA that flows through the residence is higher than in conventional demand-driven ventilation systems such that more flow is output than can be used to cool the building by ventilation.
  • the air exhaust flow Q ETA are distributed over the multiple auxiliary connections and the air exhaust flow Q ETA and the air output are consistent with the sum of the individual, zonal flows Q H_ETA per auxiliary connection. At least one of these zonal flows is thus increased to effectively cool the building.
  • the excess capacity of the ventilation system will be used, meaning the difference between the maximum set ventilation flow related to the applicable standard for ventilation of buildings and the ventilation capacity of the system.
  • the air exhaust flow rate Q ETA corresponds to a hygienic air exhaust flow rate Q HYG related to the air quality in one or more rooms in the building.
  • the air exhaust flow rate Q ETA lies between a minimum set ventilation rate and a maximum set ventilation rate. This set ventilation flow rate is preferably determined based on the legal ventilation standards of the building to be ventilated.
  • the air exhaust flow rate Q ETA corresponds to the total exhaust rate that is removed by the ventilation systems from the residence and is thus consistent with the sum of the zonal air exhaust rates Q H_ETA .
  • They hygienic air exhaust rate Q HYG corresponds to the sum of the zonal hygienic air exhaust rates Q H_HYG .
  • the minimum set ventilation rate Q SET, MIN corresponds to the sum of the minimum set zonal ventilation rates.
  • the maximum set ventilation rate Q SET , MAX corresponds to the sum of the maximum set zonal ventilation rates.
  • This method also involves the steps of controlling the exhaust flow regulation elements based on one or more parameters related to the ventilation mode of the hygienic ventilation system so that when the hygienic ventilation system is in a summer night ventilation mode, the air exhaust flow rate of Q ETA corresponds to the sum of the hygienic air exhaust rate Q HYG and a thermal flow rate, wherein the air exhaust rate is higher than the set ventilation rate.
  • the thermal output is at least 100 m 3 /hour or at least 150 m 3 /hour.
  • the thermal flow rate corresponds to the sum of the zonal thermal flow rates.
  • an exhaust flow passage extends from the at least one auxiliary exhaust connection, further comprising the steps of determining the ventilation rate of the exhaust flow passage and controlling the exhaust flow regulation elements such that when the hygienic ventilation system is in summer night ventilation mode, the zonal air exhaust rate Q H_ETA lies between the maximum set zonal ventilation rate Q H_SET,MAX and the ventilation capacity of the exhaust flow passage, preferably the zonal air exhaust rate Q H_ETA corresponds to the ventilation capacity of the exhaust flow passage.
  • a first embodiment which may occur in combination with the other aspects and embodiments of the invention described here involves an aforementioned method, wherein the exhaust flow regulators are formed by an exhaust booster to create an air exhaust flow from the main exhaust connection via the exhaust air passage to at least one auxiliary exhaust connection.
  • the method also includes the step of ensuring the air exhaust flow by creating the air exhaust flow with the exhaust booster.
  • a second embodiment which may occur in combination with the other aspects and embodiments of the invention described here involves an aforementioned method, wherein the exhaust flow regulators are formed by one or more exhaust regulator valves for controlling the air exhaust flow of a generated air flow that flows from the main exhaust connection via the exhaust air passage to at least one auxiliary exhaust connection.
  • the method further includes the step of ensuring the air exhaust flow by adjusting the flow of the exhaust regulation valves.
  • the invention comprises a hygienic ventilation system configured to execute an aforementioned method, comprising an exhaust flow passage that extends between a main exhaust connection and at least one auxiliary exhaust connection and exhaust flow control units to ensure an air exhaust flow from the at least one auxiliary exhaust connection via the exhaust flow passage to the main exhaust connection.
  • the invention is an aforementioned hygienic ventilation system comprising a hygienic ventilation assembly consisting of a housing, a supply passage that extends between a main supply connection and at least one auxiliary supply connection and supply flow control means to ensure a supply airflow from the main supply connection via the supply flow passage to at main supply connection.
  • the invention contains a hybrid ventilation system comprising an aforementioned central hygienic ventilation system and a decentralized hygienic ventilation system for bringing outside air into the building.
  • the decentralized air input system can passively allow air to flow in by using the influence of the pressure difference between the interior and exterior of the building to bring outside air into the building, or actively bring air in using mechanical ventilation.
  • the decentralized air input system can be designed as a window, door, sliding door, grate or in particular a summer night ventilation shutter.
  • the invention involves a computer-implemented method for the ventilation and ventilative cooling of a building, involving the steps of developing of a control signal by a processor for controlling the exhaust flow regulators of an aforementioned hygienic ventilation system; provision by the processor of the control signal to the exhaust flow regulators and controlling the exhaust flow regulators in reaction to the control signal to adjust the exhaust rate to the zonal air exhaust rate Q H_ETA for at least one of the auxiliary exhaust connections consistent with the sum of the zonal hygienic air exhaust rate Q H_HYG and a zonal thermal flow rate Q H_THERM , wherein the zonal air exhaust rate Q H_ETA is higher than the maximum set zonal ventilation rate Q H_SET, MAX , preferably to adjust the exhaust rate to an air exhaust rate consistent with the sum of a hygienic air exhaust rate and a thermal flow rate, wherein the air exhaust rate is higher than a maximum, set ventilation
  • an aforementioned computer-implemented method further involving the step of: developing a control signal by the processor for controlling a decentralized air supply system for the supply of outside air via an opening in an outside facade of the building; providing the control signal by the processor to the decentralized air supply system and controlling the exhaust rate regulators in reaction to the control signal to increase the decentralized supply rate of outside air.
  • the invention involves a data processing device comprising a processor configured to execute the steps of the aforementioned method.
  • the invention comprises a computer program that contains the instructions to have the aforementioned data processing device execute the steps of the aforementioned method.
  • the invention has a computer-readable data storage unit containing the aforementioned computer program.
  • the invention involves a building, such as a residence or apartment, with two or more rooms containing the aforementioned hygienic ventilation system or hybrid ventilation system.
  • first, second, third and the like are used in the description and claims to differentiate between similar elements and not necessarily to describe a sequential or chronological sequence.
  • the terms are interchangeable under fitting circumstances and the embodiments of the invention can be applied in sequences other than those described or illustrated here.
  • top, bottom, over, under and the like are used in the description and claims are used for illustrative purposes and not necessarily to describe relative positions.
  • the terms used are interchangeable under fitting circumstances and the embodiments of the invention described can be applied in other orientations than described or illustrated here.
  • Fig. 1 shows a building 1a in the form of a residence consisting of multiple rooms 11, 12, 21, 22 and traffic area 30, such as a passageway, hallway or landing that provides access to the rooms.
  • the of the building shown in figure 1 has multiple living spaces in the form of rooms 11, 12, such as a living room or a bedroom, into which the supply air SUP can be pumped in via the auxiliary supply (not shown).
  • the building 1a also has functional spaces in the form of rooms 21, 22, for example a toilet room, a bathroom or a kitchen, from which the ETA exhaust air can be removed via the ancillary exhaust flow passages 4, 5.
  • Each of these auxiliary passages 4, 5 are connected to an auxiliary connection 123-125 of a hygienic ventilation system 100. With one or more distribution pieces (not shown), multiple similar auxiliary passages can be connected to one auxiliary connection.
  • the building also has a main exhaust flow passage 8 for removing the exhaust air EHA from a main exhaust connection 122 of the hygienic ventilation system 100.
  • the building 1a also has a decentralized air supply system in the form of a summer night vent 200 for supply of outside air into one of the living spaces.
  • a summer night vent is a vent that thanks to the supply of large ventilation airflows, ensures efficient cooling of the building according to the summer night ventilation principle.
  • a summer night vent 200 has an anti-burglary, rain resistant and/or insect-proof outside grate that can be opened without any negative consequences.
  • the summer night vent 200 is designed to be opened through an external signal or for manual opening, to send a signal which can be received by the hygienic ventilation system 100 or another connected ventilation system.
  • the hygienic ventilation system 100 can create a thermal flow Q THERM by upping the flow Q ETA of the exhaust return air ETA to increase the pressure difference over the summer night vent 200.
  • the same cooling capacity can be achieved (with regard to natural ventilation) with more freedom in the location and dimensions of the summer night vent 200. For example, a summer night vent with a smaller surface and fewer summer night vents placed further apart will have the same air flow.
  • FIG. 2 One embodiment of the hygienic ventilation system 100 is shown in figure 2 .
  • This hygienic ventilation system 100 has a housing shown by 101 with an air supply connection 122 to which the main supply passage 7 is to be connected.
  • On the other end of the housing there are one or more, in the figure three, used ancillary exhaust connections 123-125 and optionally one or more, in the figure one, auxiliary cooling connection 160 with an auxiliary cooling vale 162 for connecting the auxiliary cooling connection 160.
  • the exhaust plenum 120 extends between the auxiliary exhaust connections 123 and the exhaust air connection 122. The output of air takes place using the booster 121 that is placed in the exhaust plenum near the main exhaust connection 122.
  • hygienic flow regulator valves 126- 128 are placed in the auxiliary connections.
  • Each flow regulator can be contained in a cassette that is inserted into a cassette chamber that is located at or behind the respective auxiliary supply connection.
  • Each cassette can also have a measurement system that can contain a sensor, for example, for measuring the CO 2 value of the air, relative humidity and the like. Based on the measurements of this sensor, not only the hygienic ventilation system but also the summer night vent can be controlled.
  • Fig. 3 shows a building 1b in the form of an apartment building consisting of multiple residential units with rooms 11-13, 21-26 and traffic areas (not shown) such as a passageway, hallway or landing that provides access to the rooms.
  • Each of the residential units shown in figure 3 has residential spaces in the form of rooms, such as a living room or a bedroom, into which the supply air SUP can be pumped in via the auxiliary supply passages 2.
  • Return air, ETA can also be removed through auxiliary exhaust flow passages 4 from the functional spaces 21-26 in the form of rooms, such as a toilet room, bathroom or kitchen.
  • Each of these auxiliary passages 2, 4, 5 are connected to a hygienic ventilation system in the form of a hygienic ventilation assembly 300a-300c.
  • the building also contains a main inflow passage 6 for letting in outside air, ODA to a supply connection of a hygienic ventilation assembly 300a-300c and a main exhaust flow passage 7 to expel the exhaust air, EHA from a main exhaust connection of the hygienic ventilation assembly 300a-300c.
  • Each residential unit also has a decentralized air supply system in the form of a summer night vent 201-203 for supply of outside air into one of the spaces in the accommodation.
  • the summer night vent 200 is designed to be opened through an external signal or for manual opening, to send a signal which can be received by the hygienic ventilation system or another connected control system.
  • the hygienic ventilation system can create a thermal flow Q THERM by increasing the exhaust Q ETA to increase the pressure difference over the summer night vent 200 so that a smaller vent can be used to achieve the same flow rate.
  • the collectively created air flows through a central control valve 311, 312, 313; 321 and depending on the resistance in the various auxiliary passages 2, 4, 5 without further options for adjustment toward the various rooms, and the air is suctioned out.
  • hygienic flow regulators (not shown) are placed in the auxiliary connections or auxiliary passages in zones 322-323 or locally 324-325.
  • Each control valve can be enclosed in a cassette.
  • Each cassette can also have a measurement system that can contain a sensor, for example, for measuring the CO 2 value of the air, relative humidity, temperature and the like.
  • a constant volume regulator 310, 320 for limiting the maximum air flow through the auxiliary air passages.
  • a fire valve (not shown) between the constant volume regulator 310, 320 and the collective air passage 8, 9.
  • FIG. 4 The function of the central hygienic ventilation system 100, 300a-300c is illustrated in figures 4 and 5A-5E .
  • An internal or external control unit or processor 150 is set to control the exhaust booster 121 or the one or more exhaust regulation valves 320-325. The control of these elements is dependent on the ventilation mode of the hygienic ventilation system. As is clear in figure 4 , which shows the time lapse of the air supply flow the air exhaust flow Q ETA in a hygienic ventilation mode I (left) and a summer night ventilation mode II (right).
  • the hygienic ventilation system functions like a conventional demand-driven ventilation system and the ventilation requirement is adjusted to the air quality between a minimum, set ventilation flow Q SET , MIN and a maximum, set ventilation flow Q SET , MAX .
  • the set ventilation flows Q SET are determined based on the legal ventilation standards.
  • the demand-driven ventilation flow Q HYG can be controlled based on CO 2 , humidity, time (day and night as 2-zone system) and any movement.
  • the exhaust flow rate Q ETA will then fluctuate between Q SET , MIN and Q SET , MAX based on the air quality.
  • the hygienic ventilation system When transitioning to the summer night ventilation mode, the hygienic ventilation system will remove more air than it supplies and thus runs imbalanced to be able to realize the desired supply flows with the summer night vent 200-203.
  • the air exhaust flow Q ETA will be maximized to a level above the set ventilation range Q SET , MAX and thus use the excess capacity of the hygienic ventilation system to cool the building by ventilation.
  • the air exhaust flow rate Q ETA will be consistent with the sum of the air supply flow Q HYG and the additional thermal flow Q THERM .
  • FIG. 5A-5E An alternative function of the central hygienic ventilation system 100 shown in figure 2 is illustrated in figures 5A-5E .
  • the exhaust rate is only maximized by zone to a level above the maximum set ventilation rate Q H_SET, MAX .
  • the air exhaust flow Q ETA can be maximized to a level above the set ventilation rate Q SET , MAX but this is not necessary.
  • Figures 5A-5C show the zonal air exhaust rate Q H_ETA 123 -Q H_ETA_125 related to the auxiliary exhaust connections. In the operation illustrated, these zonal air exhaust rates are also consistent with the zonal hygienic, demand-driven ventilation rates Q H_HYG even in the summer night ventilation mode II.
  • the zonal air exhaust rate Q H_ETA_160 related to the auxiliary cooling connection 160 is shown in figure 5D .
  • the auxiliary cooling connection 160 remains connected and therefore the zonal air exhaust rate Q H_ETA_160 is equal to zero. No account is taken of some leak rates for the calculation of the air exhaust rates.
  • the auxiliary cooling connection 160 is opened and the zonal air exhaust rate Q H_ETA_160 is maximized to a level above the set ventilation rate Q H_SET, MAX , preferably to the ventilation capacity of the auxiliary cooling connection 160 or an auxiliary cooling passage connected to it.
  • one or more of the zonal air exhaust rate Q H_ETA 123 -Q H_ETA_125 related to the auxiliary exhaust connections can be maximized to a level above the maximum set zonal ventilation flow rate Q H_SET, MAX , preferably to the ventilation capacity of the auxiliary connection or the auxiliary cooling passage connected to it.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
  • Building Environments (AREA)
EP23213416.3A 2022-11-30 2023-11-30 Hygienisches belüftungssystem und verfahren zur steuerung solch eines belüftungssystems Pending EP4379279A1 (de)

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Application Number Priority Date Filing Date Title
BE20225975A BE1031087B1 (nl) 2022-11-30 2022-11-30 Hygienisch ventilatiesysteem en werkwijze voor het aansturen van een dergelijke ventilatiesysteem

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EP4379279A1 true EP4379279A1 (de) 2024-06-05

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20314980U1 (de) * 2003-09-26 2004-02-12 Hagmann, Ernst Belüftungsvorrichtung
EP1482253A2 (de) * 2003-05-21 2004-12-01 Gentle Vent B.V Verfahren und Vorrichtung zur Lüftung eines Gebäudes
US20120064818A1 (en) 2010-08-26 2012-03-15 Kurelowech Richard S Heat recovery and demand ventilationsystem
NL2014612A (nl) 2015-04-10 2016-10-12 Vero Duco Nv Gebouw met vraaggestuurd warmtewisselingssysteem voor ventilatie, alsmede warmtewisselingssysteem.
KR101931912B1 (ko) * 2018-06-14 2018-12-21 홍승수 공기의 유동경로를 변화시키는 환기시스템
NL2022733B1 (en) 2019-03-13 2020-09-18 Vero Duco Nv Building With Demand-Controlled Heat Exchange System For Ventilation, Heat Exchange Ventilation System and Heat Exchange System
KR20210155403A (ko) * 2020-06-15 2021-12-23 이상섭 친환경 에너지 절약형 다기능 환기 시스템
EP4036486A1 (de) 2021-01-29 2022-08-03 Daikin Industries, Ltd. Integriertes hlk-system für ein gebäude

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1482253A2 (de) * 2003-05-21 2004-12-01 Gentle Vent B.V Verfahren und Vorrichtung zur Lüftung eines Gebäudes
DE20314980U1 (de) * 2003-09-26 2004-02-12 Hagmann, Ernst Belüftungsvorrichtung
US20120064818A1 (en) 2010-08-26 2012-03-15 Kurelowech Richard S Heat recovery and demand ventilationsystem
NL2014612A (nl) 2015-04-10 2016-10-12 Vero Duco Nv Gebouw met vraaggestuurd warmtewisselingssysteem voor ventilatie, alsmede warmtewisselingssysteem.
KR101931912B1 (ko) * 2018-06-14 2018-12-21 홍승수 공기의 유동경로를 변화시키는 환기시스템
NL2022733B1 (en) 2019-03-13 2020-09-18 Vero Duco Nv Building With Demand-Controlled Heat Exchange System For Ventilation, Heat Exchange Ventilation System and Heat Exchange System
KR20210155403A (ko) * 2020-06-15 2021-12-23 이상섭 친환경 에너지 절약형 다기능 환기 시스템
EP4036486A1 (de) 2021-01-29 2022-08-03 Daikin Industries, Ltd. Integriertes hlk-system für ein gebäude

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BE1031087B1 (nl) 2024-06-24

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