WO2023161249A1 - Système de climatisation et procédé d'établissement d'une logique de commande pour l'actionnement de robinets d'arrêt - Google Patents

Système de climatisation et procédé d'établissement d'une logique de commande pour l'actionnement de robinets d'arrêt Download PDF

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Publication number
WO2023161249A1
WO2023161249A1 PCT/EP2023/054372 EP2023054372W WO2023161249A1 WO 2023161249 A1 WO2023161249 A1 WO 2023161249A1 EP 2023054372 W EP2023054372 W EP 2023054372W WO 2023161249 A1 WO2023161249 A1 WO 2023161249A1
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WO
WIPO (PCT)
Prior art keywords
room
air conditioning
leak detection
conditioning system
unit
Prior art date
Application number
PCT/EP2023/054372
Other languages
English (en)
Inventor
Gennaro SCOTTO DI LUZIO
David Steen
Original Assignee
Daikin Europe N.V.
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 Daikin Europe N.V. filed Critical Daikin Europe N.V.
Priority to CN202380022510.6A priority Critical patent/CN118742773A/zh
Publication of WO2023161249A1 publication Critical patent/WO2023161249A1/fr

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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
    • 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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/221—Preventing leaks from developing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks

Definitions

  • the present invention relates to air conditioning systems.
  • the present invention relates to air conditioning safety devices and methods.
  • Air conditioning systems are very often comprised of numerous discrete elements which may develop leaks. Refrigerants used in air conditioning systems are often damaging to the environment, health or both. Setting up and monitoring modern air conditioning systems, in particular in larger buildings, is therefore particularly difficult.
  • EP 2570740 first discloses a switching unit in which a plurality of shutoff valves are integrated. Each of the entrance shutoff valves and at least one corresponding exit shutoff valves are paired as an integral body, and a plurality of pairs are grouped together.
  • EP 3270069 discloses a cooling/heating switching unit capable of detecting refrigerant leaks.
  • switching units are provided near indoor units, which switching units are provided with sensors for detecting refrigerant leaks.
  • the present invention aims to resolve at least some of the problems and disadvantages mentioned above.
  • the aim of the invention is to provide a method which eliminates those disadvantages.
  • the present invention and embodiments thereof serve to provide a solution to one or more of above-mentioned disadvantages.
  • the present invention relates to an air conditioning system having leak safety features.
  • a compartment refers to one or more than one compartment.
  • the invention in a first aspect, relates to an air conditioning system comprising: compressor unit connected to a plurality of indoor units by means of a plurality of pipes; a switching unit between the compressor unit and each indoor unit, said switching unit comprising a plurality of shutoff valves connected to each pipe or pipe branch leading to an indoor unit; a plurality of leak detection sensors; and a controller configured to control the plurality shutoff valves and have information of associating each of the shutoff valves to at least one leak detection sensor; characterized in that, the shutoff valve is operated based on a signal from the associated sensor.
  • the controller has information of associating each of the shutoff valves to at least one leak detection sensor, so that when a refrigerant leak is detected by any leak detection sensor, based on the information from that leak detection sensor, the controller is configured to control a shut-off valve associated with the leak detection sensor.
  • the controller is configured to close a shut-off valve associated to the leak detection sensor, based on the signal from the leak detection sensor.
  • shutoff valves are operated based on information from their associated leak detection sensors.
  • an intermediate element is provided in order to mediate information coming from the leak detection sensors and the operation of the shutoff valves.
  • association or "associated” as applied to elements of the system are to be understood as an assignment or registration of one or more elements to each other. Elements which are associated among them are understood to have a function or effect which in turn directly affects function and/or state of any other element associated to said element. For example, a pipe passing through a room may develop a leak, which leak will cause refrigerant concentration in said room to rise and thereby trigger a leak detection sensor, which the leak detection sensor will cause a shutoff valve to close, which shutoff valve is in fluid connection with the pipe. In this example, the shutoff valve and the leak detection sensor are said to be associated to each other.
  • indoor unit is to be understood as an indoor air- conditioning unit.
  • each room which has an indoor unit and/or which is traversed by at least one of the refrigerant carrying pipes is provided with at least one leak detection sensor.
  • the switching unit is a manifold configured to be connected to the compressor unit and distribute a refrigerant input throughout multiple pipe branches. By preference, the switching unit is placed before any subdivisions in the piping.
  • the leak detection sensors are installed outside of the indoor units. In this way, the leak detection sensors are free from the shrouding effect created by the structure of said indoor units. This advantageously allows refrigerant leaks coming from sources other than indoor units to more easily reach the sensors while still being able to detect leaks coming from indoor units.
  • each leak detection sensor is associated to a room in which it is positioned.
  • the associations are provided to or known by the controller. Said association is effectuated by assigning a unique unit identification code to each leak detection sensor and assigning said code to the room or room code wherein said leak detection sensor is installed. This association can be carried out manually. By preference, said association is carried out automatically, which advantageously permits reducing or even eliminating human error from the association process.
  • each pipe or pipe branch is associated to a shutoff valve.
  • Said shutoff valve is capable of blocking or allowing refrigerant to flow to said pipe or pipe branch.
  • This association is executed by means of a unique pipe or pipe branch identifying code and a unique shutoff valve identifying code.
  • the code of a pipe or branch is associated to the code of the shutoff valve said pipe departs from. This association is provided to or known by the controller.
  • each room which has an indoor unit and/or which is traversed by at least one of the pipes is associated with at least one shutoff valve.
  • each room which has an indoor unit and/or which is traversed by at least one of the pipes will be associated with one shutoff valve per pipe traversing said room. This association is provided or known by a controller. This advantageously permits, not only stopping any leaks that may occur in said room, but also permits diagnosing the origin of said leak, for example, by allowing refrigerant flow to one pipe at a time and monitoring the concentration of refrigerant in the room.
  • the switching unit will be placed inside a building.
  • the switching unit is placed inside a ventilated room.
  • a leak detection sensor is placed inside the room containing the switching unit. More preferably, the room is ventilated by a fan, which fan is further connected to a controller, which controller is further connected to the leak detection sensor installed in the room. This permits discharging refrigerant leaking from the switching unit out of the ventilated room.
  • the compressor unit In cases where the compressor unit must be placed inside a building, by preference, the compressor unit is placed inside a ventilated room. More preferably, a leak detection sensor is placed inside the room. Yet more preferably, the room is ventilated by a fan, which fan is further connected to a controller and which controller is further connected to the leak detection sensor installed in the room.
  • said switching unit and said compressor unit are preferably placed in the same ventilated room.
  • this permits reducing the number of leak detection sensors necessary, while maintaining a level of safety comparable to a situation where both units were in separate ventilated rooms.
  • each sensor is configured to cause the shutoff valves associated with each room which has an indoor unit and/or which is traversed by at least one of the pipes to close.
  • the sensors are connected to a central controller, which controller is configured to receive signals from leak detection sensors and interpret said signals into shutoff valve close triggering signals.
  • a refrigerant used in the air conditioning system is CO2 or R466A. These refrigerants are advantageously non-flammable and have a density much heavier than air. These refrigerants offer a highly predictable path and pooling characteristics which permit easy leak detection sensor placement and consistent leak detection.
  • a second aspect of the invention relates to a method of establishing a control logic for shutoff valve actuation based on leak detection signal comprising the steps of: registering leak detection sensors present in each room; registering pipes running through or into in each room; registering shutoff valves connected to each pipe; registering each leak detection sensor to at least one shutoff valve;
  • This method can advantageously be applied with the use of a floorplan of the building in which the air-conditioning system is to be installed.
  • the application of the present method is carried out by means of a software application which allows the user to insert, connect and edit attributes of each element (e.g. pipes, indoor units, shut-off valves) of the air-conditioning system.
  • said software includes a graphical user interface which permits the introduction and edition of data by the user. In this way, the generation of computer and human readable set of correspondence relationships is made easier and less prone to human error.
  • each leak detection sensor is registered to any shutoff valve associated to any pipe running through or into the room where the sensor is installed.
  • registration information is stored in a machine readable tabular format. In this way, the operator is provided with an easily read report, which report can advantageously be used as a system assembly/verification sheet. By being machine readable, the registration information is advantageously easy to copy, edit, download from/upload into a controller.
  • the method according to the invention can be applied in all sorts of systems carrying fluids in or susceptible to be in gaseous state upon or shortly after leaking, and in which state said fluids are denser than air.
  • Figure 1 shows an air conditioning system wherein the compressor unit is outside the building.
  • Figure 2 shows an air conditioning system wherein the compressor unit is inside the building and in a room separate from that of the switching unit.
  • Figure 3 shows an air conditioning system wherein the compressor unit is inside the building and in the same room as the switching unit.
  • Figure 4 shows a topology of pipe routing, and sensor placement for a plurality of indoor units.
  • Figure 5 shows a flow diagram of the processes carried out once a refrigerant leakage is detected.
  • Figure 6 shows a functional structure of the controller.
  • Figure 1 shows an air conditioning system 1.
  • the air conditioning system according to the present embodiment comprises a compressor unit 2, a plurality of indoor units, a switching unit 3 which is connected between the compressor unit 2 and each indoor unit, a plurality of leak detection sensors and a controller.
  • the air conditioning system according to the present embodiment is an air conditioning system capable of a cooling operation and a heating operation by using CO2 or R.466A refrigerant.
  • Figure 1 shows an air conditioning system 1 wherein the compressor unit 2 is outside the building. In this way, the compressor unit 2 is advantageously eliminated as a possible origin of leaks.
  • the compressor unit 2 is shown in fluid communication with switching unit 3.
  • the switching unit 3 comprises a plurality of shutoff valves and a manifold.
  • the switching unit 3 splits the refrigerant flow to and from the compressor unit 2 into multiple pairs of two way refrigerant connection by means of the manifold.
  • the switching unit 3 is connected to an indoor unit by two pipes.
  • the two pipes comprise of a liquid pipe through which a liquid refrigerant flows and a gas pipe through which a gas refrigerant flows.
  • the switching unit 3 can connect to each of the indoor units 5 to 14.
  • the switching unit 3 has a plurality of pairs of liquid pipe and gas pipe, which number of pairs is the same as the number of indoor units to be able to connect. In this way, the control of the flow of refrigerant is advantageously centralized and as far upstream as possible, which advantageously permits better containment of any potential leak.
  • each indoor unit 5 to 14 is provided with a pair of two way connections.
  • the switching unit 3 is shown inside the building and in a room provided with a ventilation fan 4. This configuration permits evacuating any refrigerant that may leak from the switching unit 3 itself.
  • FIG. 2 shows an air conditioning system 1 wherein the compressor unit 2 is inside the building and in a room separate from that of the switching unit 3.
  • the room where the compressor unit 2 is installed is provided with a second ventilation fan 15. This permits extracting any refrigerant that may leak from the compressor unit 2 before it reaches other parts of the building.
  • the room where the switching unit 3 is installed is provided with a first ventilation fan 4 for the possibility that there is a leak in or adjacent to said switching unit 3.
  • the compressor unit 2 is shown in fluid communication with switching unit 3, which switching unit splits the refrigerant flow to and from the compressor unit 2 into multiple pairs of two way refrigerant connection. In this way, any leaks can be stopped far upstream, thereby reducing the risk of any hazardous amounts of refrigerant building up in any of the rooms.
  • each indoor unit 5 to 14 is provided with a pair of two way connections.
  • FIG. 3 shows an air conditioning system 1 wherein the compressor unit 2 is inside the building and in the same room as the switching unit 3. In this configuration, only a first ventilation fan 4 is necessary. This advantageously permits simplifying the system while still maintaining sufficient refrigerant extraction capability in the event either the compressor unit 2 or the switching unit 3 develop a leak.
  • the compressor unit 2 is shown in fluid communication with switching unit 3, which switching unit splits the refrigerant flow to and from the compressor unit 2 into multiple pairs of two way refrigerant connection. In this way, any leaks can be stopped far upstream, thereby reducing the risk of any hazardous amounts of refrigerant building up in any of the rooms.
  • each indoor unit 5 to 14 is provided with a pair of two way connections.
  • Figure 4 shows a topology of the equipment on the usage side of the air conditioning system in Figure 1 on the floor plan 31.
  • Figure 4 shows a topology of pipe routing, and leak detection sensor placement for a plurality of indoor units in a floorplan 31.
  • the figure shows an example where a plurality of shutoff valves are arranged in one switching unit 3.
  • the switching unit 3 comprises a plurality of shutoff valves (W,X,Y and Z), a manifold (now shown) and a controller 16.
  • the shutoff valves consist of an on-off valve such as a solenoid valve.
  • the manifold in the switching unit 3 is configured to distribute a refrigerant input throughout multiple pipe branches.
  • the manifold of the present embodiment is configured to distribute the refrigerant input to four pipe branches.
  • the switching unit 3 of the present embodiment is configured to be connectable to four indoor units.
  • the controller 16 is configured to perform information processing and signal processing by executing the control program to control operation of the shutoff valves based on signals received by any leak detection sensor a to g. A configuration of the controller 16 will be explained later.
  • the building comprises six rooms A to F. Of which, room A is equipped with an indoor unit 17, room B is equipped with indoor unit 18 and room E is equipped with indoor unit 19 and indoor unit 20. Refrigerant is distributed by switching unit 3. Refrigerant passing through shutoff valve W is then distributed by pipe a to indoor unit 17.
  • the pipe a comprises two pipes which connect the indoor unit 17 with the switching unit 3.
  • the shutoff valve W is disposed in each pipe which connects the indoor unit 17 with the switching unit 3.
  • Refrigerant passing through shutoff valve X is distributed by pipe P to indoor unit 18.
  • the pipe comprises two pipes which connect the indoor unit 18 with the switching unit 3.
  • the shutoff valve X is disposed in each pipe which connects the indoor unit 18 with the switching unit 3.
  • Refrigerant passing through shutoff valve Y is distributed by pipe y to indoor unit 19.
  • the pipe Y comprises two pipes which connect the indoor unit 19 with the switching unit 3.
  • the shutoff valve Y is disposed in each pipe which connects the indoor unit 19 with the switching unit 3.
  • Refrigerant passing through shutoff valve Z is distributed by pipe 3 to indoor unit 20.
  • the pipe 3 comprises two pipes which connect the indoor unit 20 with the switching unit 3.
  • the shutoff valve Z is disposed in each pipe which connects the indoor unit 20 with the switching unit 3.
  • Pipe a traverses rooms C and A
  • pipe P traverses rooms C and B
  • pipes y and 3 traverse C
  • D and E Leak detection sensor a is shown assigned to room A
  • leak detection sensor b is shown assigned to room B
  • leak detection sensors c and d are shown assigned to room C
  • leak detection sensor e is shown assigned to room D
  • leak detection sensors f and g are shown assigned to room E.
  • the leak detection sensors a to g are installed outside of the indoor units.
  • each leak detection sensor In order to process the signal sent by a leak detection sensor in the event of a refrigerant leakage, a correspondence relationship between each leak detection sensor and each shutoff valve must first be established by means of the following steps:
  • Switching unit is plotted in the floorplan of a building
  • Creating Table 1 associating the unique identifiers of the sensor, room, pipe, and shut-off valve identifier may be carried out manually or automatically. Furthermore, a dedicated software may be provided in order to assist to create it.
  • FIG. 5 shows a flow diagram 21 of the processes carried out once a refrigerant leakage is detected.
  • a functional structure of the controller 16 is shown in figure 6.
  • the controller 16 includes an information storage 22, an information input section 23, a leakage detection section 25, an identification section 26, a memory reading section 27 and a signal output section 29.
  • the information input section 23 is configured to receive signals from all the leak detection sensors which are connected to the controller 16.
  • a leak detection sensor detects a refrigerant leakage. Said leak detection sensor then sends a signal to the controller 16.
  • the leakage detection section 25 receives a signal of refrigerant leakage from the leak detection sensor via the information input section 23.
  • the signal allows the identification section 26 to identify the unique identification number of the leak detection sensor from which the signal is transmitted.
  • the memory reading section 27 accesses the information storage 22 to read information related to the identified leak detection sensor.
  • the information storage 22 stores at least the information of associating each of the shutoff valves to at least one leak detection sensor.
  • the information storage 22 stores the information of associating each leak detection sensor to a room in which it is positioned. More preferably, the information storage 22 stores the information of associating each pipe or pipe branch to a shutoff valve.
  • the information storage 22 stores the information of associating each room which has an indoor unit and/or which is traversed by at least one of the pipes to at least one shutoff valve.
  • the information storage 22 stores the information shown in the table 1 associating the unique identifiers of the sensor, room, pipe, and shut-off valve.
  • the identification section 26 reads the identification number of the shutoff valve associated with the identification number of the leak detection sensor identified. This permits conveying a signal via a to the specific shutoff valves which are in fluid connection with the pipes traversing the area where the refrigerant leakage was detected. Therefore, in step S6, the signal output section 29 transmits a signal for closing the identified shutoff valve(s).
  • the shutoff valve(s) is closed by receiving the closing signal. In this way, any disturbance to the functioning of the air conditioning system due to refrigerant leakage is kept to a bare minimum. While no leakages occur, normal operation of the system is kept by a normal operation controller 28.
  • a first example of application of the method shown in flow diagram 21 in figure 5 is now presented.
  • the method is applied to the topology shown in figure 4 wherein a refrigerant leakage is detected by leak detection sensor a.
  • leak detection sensor a is located inside room A which room is traversed by pipe a. Said pipe is in fluid connection with shutoff valve W. Therefore, the signal sent by leak detection sensor a to the controller 16 will cause said controller 16 to send a shutoff signal to shutoff valve W. In this case, only the first indoor unit 17 is disabled.
  • a second example of application of the method shown in flow diagram 21 in figure 5 is now presented.
  • the method is applied to the topology shown in figure 4 wherein a refrigerant leakage is detected by leak detection sensor f.
  • leak detection sensor f is located inside room E which room is traversed by pipes y and 3. Said pipes are fluid connection with shutoff valve Y and shutoff valve Z. Therefore, the signal sent by leak detection sensor f to the controller 16 will cause said controller 16 to send a shutoff signal to shutoff valve Y and shutoff valve Z. In this case, only the third indoor unit 19 and fourth indoor unit 20 are disabled. A similar outcome would be obtained if a refrigerant leakage would be detected by sensor g or by both sensor f and sensor g.
  • leak detection sensor e is located inside room D which room is traversed by pipes y and 3. Said pipes are fluid connection with shutoff valve Y and shutoff valve Z. Therefore, the signal sent by leak detection sensor e to the controller 16 will cause said controller 16 to send a shutoff signal to shutoff valve Y and shutoff valve Z. Even though there are no indoor units in room D, pipes y and 3 continue to room E, which room contains the third indoor unit 19 and fourth indoor unit 20. Therefore, the third indoor unit 19 and fourth indoor unit 20 are disabled by the closing of shutoff valve Y and shutoff valve Z.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente invention concerne un système de climatisation comprenant une unité de compresseur reliée à une pluralité d'unités intérieures au moyen d'une pluralité de tuyaux ; une unité de commutation entre l'unité extérieure et chaque unité intérieure, ladite unité de commutation comprenant une pluralité de robinets d'arrêt ; une pluralité de capteurs de détection de fuite ; et un dispositif de commande conçu pour commander la pluralité de robinets d'arrêt et avoir des informations d'association de chacun des robinets d'arrêt à au moins un capteur. Afin de gérer de manière sûre et efficace des fuites de fluide frigorigène, les robinets d'arrêt sont actionnés sur la base d'informations en provenance de leurs capteurs associés.
PCT/EP2023/054372 2022-02-23 2023-02-22 Système de climatisation et procédé d'établissement d'une logique de commande pour l'actionnement de robinets d'arrêt WO2023161249A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202380022510.6A CN118742773A (zh) 2022-02-23 2023-02-22 空调系统和建立用于截流阀致动的控制逻辑的方法

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BE2022/5125 2022-02-23
BE20225125A BE1030293B1 (nl) 2022-02-23 2022-02-23 Airconditioningsysteem en werkwijze voor het tot stand brengen van een besturingslogica voor de bediening van de afsluitklep

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US11927377B2 (en) 2014-09-26 2024-03-12 Waterfurnace International, Inc. Air conditioning system with vapor injection compressor
US11953239B2 (en) 2018-08-29 2024-04-09 Waterfurnace International, Inc. Integrated demand water heating using a capacity modulated heat pump with desuperheater

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EP3690352A1 (fr) * 2017-09-29 2020-08-05 Daikin Industries, Ltd. Dispositif de réfrigération
US20210010704A1 (en) * 2018-04-09 2021-01-14 Mitsubishi Electric Corporation Air conditioner
EP3889515A1 (fr) * 2019-01-02 2021-10-06 Daikin Industries, Ltd. Climatiseur et soupape de commutation de trajet d'écoulement
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EP2570740A1 (fr) 2010-05-12 2013-03-20 Mitsubishi Electric Corporation Appareil de commande et appareil de climatisation
EP3270069A2 (fr) 2016-07-15 2018-01-17 Hitachi-Johnson Controls Air Conditioning, Inc. Unité de commutation de refroidissement/chauffage et climatiseur la comprenant
EP3534084A1 (fr) * 2016-10-28 2019-09-04 Daikin Industries, Ltd. Dispositif de climatisation
EP3690352A1 (fr) * 2017-09-29 2020-08-05 Daikin Industries, Ltd. Dispositif de réfrigération
US20210010704A1 (en) * 2018-04-09 2021-01-14 Mitsubishi Electric Corporation Air conditioner
EP3889515A1 (fr) * 2019-01-02 2021-10-06 Daikin Industries, Ltd. Climatiseur et soupape de commutation de trajet d'écoulement
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