WO2022230325A1 - 空気調和装置の据え付け支援システム、据え付け支援装置、及び据え付け支援方法 - Google Patents
空気調和装置の据え付け支援システム、据え付け支援装置、及び据え付け支援方法 Download PDFInfo
- Publication number
- WO2022230325A1 WO2022230325A1 PCT/JP2022/006937 JP2022006937W WO2022230325A1 WO 2022230325 A1 WO2022230325 A1 WO 2022230325A1 JP 2022006937 W JP2022006937 W JP 2022006937W WO 2022230325 A1 WO2022230325 A1 WO 2022230325A1
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- WO
- WIPO (PCT)
- Prior art keywords
- indoor unit
- air conditioner
- installation support
- indoor
- refrigerant
- Prior art date
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- 238000009434 installation Methods 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims description 14
- 238000004378 air conditioning Methods 0.000 title abstract description 33
- 239000003507 refrigerant Substances 0.000 claims abstract description 142
- 238000004891 communication Methods 0.000 description 63
- 230000007246 mechanism Effects 0.000 description 16
- 230000006870 function Effects 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012806 monitoring device Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- 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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
-
- 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
- F24F1/0007—Indoor units, e.g. fan coil 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
-
- 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 disclosure relates to an installation support system, an installation support device, and an installation support method for an air conditioner.
- the safety device When using a mildly flammable refrigerant in an air conditioner, it is obligatory to install a safety device based on the size of the room and the amount of refrigerant that may leak, so that there is no danger if the refrigerant leaks. ing.
- the safety device includes a detector (such as a sensor) that detects refrigerant leakage, and a device such as a shutoff valve that takes measures against refrigerant leakage.
- the air conditioner is prevented from operating in a dangerous state when refrigerant leaks.
- the operation of the air conditioner is not started unless signals from the ventilator and the refrigerant leakage sensor are input to the controller of the air conditioner.
- the air conditioning system of Patent Document 1 is configured so that the air conditioner cannot be operated unless the interlock is released.
- the installation worker when installing an air conditioner equipped with multiple indoor units, if a situation occurs in which the operation of the air conditioner cannot be started because the interlock is not released, the installation worker must remove the interlock for all indoor units. need to check the status of For this reason, the installation work of the air conditioner could not be performed quickly.
- the purpose of the present disclosure is to facilitate the installation work of an air conditioner equipped with a plurality of indoor units interlocked with a safety device to prevent refrigerant leakage.
- a first aspect of the present disclosure is an air conditioner comprising a first indoor unit (30A) and a second indoor unit (30B) interlocked with safety devices (45, 50, 55, 60) for countermeasures against refrigerant leakage.
- the installation support system for the air conditioner (10) determines the interlock release state of the plurality of indoor units (30) and outputs the determination result. Therefore, even if the operation of the air conditioner (10) cannot be started because the interlock is not released, the output result of the installation support system is used to determine whether the interlock is not released or the interlock is not released. It is possible to determine which indoor unit (30) is released. Therefore, since the indoor unit (30) that requires additional work can be identified, the installation work of the air conditioner (10) can be quickly carried out.
- a second aspect of the present disclosure in the first aspect, displays the determination result to the user.
- the results of determining the interlock-released state of each indoor unit (30) are displayed, making it easier for the installation worker to grasp the interlock-released state of each indoor unit (30).
- a third aspect of the present disclosure in the first or second aspect, acquires information as to whether or not the interlock is released from the first indoor unit (30A) and the second indoor unit (30B).
- the third aspect it is possible to determine the interlock release state of each indoor unit (30) based on the information acquired from each indoor unit (30) as to whether or not the interlock is released, and output the determination result.
- the first indoor unit (30A) and the second indoor unit (30B) interface with multiple types of safety devices (45, 50, 55, 60). - When the lock is removed, the first indoor unit (30A) and the second indoor unit (30B) cannot , 50, 55, 60) is released.
- interlock with any safety device (45, 50, 55, 60) is released for the indoor unit (30A, 30B) whose interlock is not released. It is possible to output information as to whether or not
- a fifth aspect of the present disclosure is, in the fourth aspect, regarding the indoor units (30A, 30B) in which the interlock is not released among the first indoor unit (30A) and the second indoor unit (30B), Information is output as to which safety device (45, 50, 55, 60) of the plurality of types of safety devices (45, 50, 55, 60) is not interlocked.
- the installation worker can more easily grasp the work required to release the interlock.
- a sixth aspect of the present disclosure is the safety device (45, 50) for each of the first indoor unit (30A) and the second indoor unit (30B) in any one of the first to fifth aspects. , 55, 60), and among the first indoor unit (30A) and the second indoor unit (30B), the safety Output information whether the device (45, 50, 55, 60) is required.
- the output information is used to install the The worker can more accurately grasp the work required to release the interlock.
- a seventh aspect of the present disclosure is, in the sixth aspect, Obtaining information including the amount of refrigerant used in (10) and the length of pipes connected to the first indoor unit (30A) and the second indoor unit (30B), and based on the obtained information, The necessity of providing the safety devices (45, 50, 55, 60) for the first indoor unit (30A) and the second indoor unit (30B) is determined.
- An eighth aspect of the present disclosure is an air conditioner comprising a first indoor unit (30A) and a second indoor unit (30B) interlocked with safety devices (45, 50, 55, 60) for countermeasures against refrigerant leakage.
- the installation support device (70) includes a storage unit (71) for storing information of the air conditioner (10), and based on the information of the air conditioner (10) stored in the storage unit (71), the a judgment section (72) for judging an interlock release state of the first indoor unit (30A) and the second indoor unit (30B); and an output section (73) for outputting the judgment result of the judgment section (72).
- a storage unit (71) for storing information of the air conditioner (10), and based on the information of the air conditioner (10) stored in the storage unit (71), the a judgment section (72) for judging an interlock release state of the first indoor unit (30A) and the second indoor unit (30B); and an output section (73) for outputting the judgment result of the judgment section (72).
- the installation support device (70) of the air conditioner (10) determines the interlock release state of the plurality of indoor units (30) and outputs the determination result. Therefore, even if the operation of the air conditioner (10) cannot be started because the interlock is not released, the installation work of the air conditioner (10) can be quickly performed using the output result of the installation support device (70). .
- the output section (73) includes a display section (74) that displays the determination result to the user.
- the results of determining the interlock-released state of each indoor unit (30) are displayed, so that the installation worker can more easily grasp the interlock-released state of each indoor unit (30).
- a tenth aspect of the present disclosure is an air conditioner comprising a first indoor unit (30A) and a second indoor unit (30B) interlocked with safety devices (45, 50, 55, 60) for countermeasures against refrigerant leakage.
- a method for supporting installation of an apparatus (10) comprising determining an interlock release state of the first indoor unit (30A) and the second indoor unit (30B) based on information of the air conditioner (10). , output the judgment result.
- the interlock release state of the plurality of indoor units (30) is determined based on the information of the air conditioner (10), and the determination result is output. Therefore, even if the operation of the air conditioner (10) cannot be started because the interlock is not released, the installation work of the air conditioner (10) can be quickly carried out.
- FIG. 1 is a piping system diagram illustrating the configuration of an air conditioning system including an air conditioner to which the installation support system of the present disclosure is applied.
- FIG. 2 is a block diagram showing a schematic configuration of the air conditioning system shown in FIG. 1.
- FIG. 3 is a block diagram showing a schematic configuration of an air conditioning system according to a modification.
- FIG. 4 is a flow chart showing the operation of the safety device of the air conditioning system shown in FIG.
- FIG. 5 is a block diagram showing a schematic configuration of an installation support device that is an example of the installation support system of the present disclosure.
- FIG. 6 is a flowchart showing an interlock release state determination operation among the operations (installation assistance method) of the installation assistance device shown in FIG.
- FIG. 7 is a flowchart showing a safety device necessity determination operation among the operations (installation assistance method) of the installation support device shown in FIG.
- the installation support system of the present disclosure is an installation support system for an air conditioner (10) having safety devices (45, 50, 55, 60) for countermeasures against refrigerant leakage and a plurality of indoor units (30) interlocking. Then, the interlock release state of each indoor unit (30) is determined based on the information of the air conditioner (10), and the determination result is output.
- the plurality of indoor units (30) include at least a first indoor unit (30A) and a second indoor unit (30B).
- Safety devices (45, 50, 55, 60) are provided corresponding to indoor spaces (S) that require safety measures against refrigerant leakage.
- the safety device (45, 50, 55, 60) consists of a refrigerant sensor (45) for detecting refrigerant leakage and a device for taking countermeasures against refrigerant leakage based on the detection signal of the refrigerant sensor (45). includes at least one of an isolation device (50), a ventilation device (55) and an alarm device (60).
- An air conditioning system (100) including an air conditioner (10) to which the installation support system of the present disclosure is applied will be described. As shown in FIGS. 1 and 2, the air conditioning system (100) includes an air conditioner (10) and safety devices (45, 50, 55, 60).
- the air conditioner (10) adjusts the temperature of the air in the indoor space (S) to be air-conditioned.
- the indoor space (S) in this example is the indoor space of a building or the like.
- the air conditioner (10) cools or heats the indoor space (S).
- the air conditioner (10) is of a multi-type having a plurality of indoor units (30) which are usage units.
- the air conditioner (10) has an outdoor unit (20) which is a heat source unit, a plurality of indoor units (30), connecting pipes (13, 14), and an air conditioning controller (AC).
- the plurality of indoor units (30) and the outdoor unit (20) are connected to each other via connecting pipes (13, 14). This connection forms a closed refrigerant circuit (11).
- the plurality of indoor units (30) includes a first indoor unit (30A) arranged for the first indoor space (S1) and a second indoor unit (30A) arranged for the second indoor space (S2). Including indoor unit (30B).
- the refrigerant circuit (11) includes a heat source circuit (20a) provided in the outdoor unit (20) and a utilization circuit (30a) provided in each indoor unit (30).
- the refrigerant circuit (11) is filled with a slightly flammable refrigerant.
- the mildly flammable refrigerant in this example is R32 (difluoromethane).
- R32 has a relatively low GWP (Global Warming Potential), but has mild flammability. For this reason, the refrigerant may leak into the indoor space (S), and when the refrigerant concentration in the indoor space (S) increases, the refrigerant may burn.
- the density of refrigerant is greater than that of air. Therefore, when the refrigerant leaks into the indoor space (S), the refrigerant stays in the lower part of the indoor space (S).
- the communication pipes (13, 14) include the first communication pipe (13) and the second communication pipe (14).
- the first communication pipe (13) is a liquid communication pipe.
- the first communication pipe (13) includes a first main pipe (13a) and a plurality of first branch pipes (13b) branching from the first main pipe (13a).
- One end of the first main pipe (13a) is connected to the heat source circuit (20a) through the first shutoff valve (15), which is a liquid shutoff valve.
- One end of each of the plurality of first branch pipes (13b) is connected to the first main pipe (13a).
- the other end of each of the plurality of first branch pipes (13b) is connected to the corresponding utilization circuit (30a).
- the second communication pipe (14) is a gas communication pipe.
- the second communication pipe (14) includes a second main pipe (14a) and a plurality of second branch pipes (14b) branching from the second main pipe (14a).
- One end of the second main pipe (14a) is connected to the heat source circuit (20a) through the second shutoff valve (16), which is a gas shutoff valve.
- One end of each of the plurality of second branch pipes (14b) is connected to the second main pipe (14a).
- the other ends of the plurality of second branch pipes (14b) are connected to corresponding utilization circuits (30a).
- the outdoor unit (20) is a heat source unit arranged outdoors.
- the outdoor unit (20) is arranged, for example, on the roof of a building or on the ground.
- the outdoor unit (20) has a compressor (21), a heat source heat exchanger (22), and a heat source fan (23).
- the outdoor unit (20) has a switching mechanism (24) for switching refrigerant flow paths, and a heat source expansion valve (25).
- the outdoor unit (20) has a first controller (C1) included in the air conditioning controller (AC).
- the compressor (21) compresses the sucked refrigerant.
- the compressor (21) discharges compressed refrigerant.
- the compressor (21) is a rotary compressor such as a scroll compressor, an oscillating piston compressor, a rolling piston compressor, or a screw compressor.
- the compressor (21) is configured such that its operating frequency (rotational speed) is variable by an inverter device.
- the heat source heat exchanger (22) is an outdoor heat exchanger.
- the heat source heat exchanger (22) is a fin-and-tube air heat exchanger.
- the heat source heat exchanger (22) exchanges heat between the refrigerant flowing therein and the outdoor air.
- the heat source fan (23) is arranged outdoors near the heat source heat exchanger (22).
- the heat source fan (23) of this example is a propeller fan.
- the heat source fan (23) conveys air passing through the heat source heat exchanger (22).
- the switching mechanism (24) changes the flow path of the refrigerant circuit (11) so as to switch between the first refrigerating cycle, which is the cooling cycle, and the second refrigerating cycle, which is the heating cycle.
- the switching mechanism (24) is a four-way switching valve.
- the switching mechanism (24) has a first port, a second port, a third port and a fourth port.
- a first port of the switching mechanism (24) is connected to a discharge portion of the compressor (21).
- a second port of the switching mechanism (24) is connected to the suction portion of the compressor (21).
- a third port of the switching mechanism (24) is connected to the second communication pipe (14) through the second shutoff valve (16).
- a fourth port of the switching mechanism (24) is connected to the gas end of the heat source heat exchanger (22).
- the switching mechanism (24) switches between the first state and the second state.
- the switching mechanism (24) in the first state (the state indicated by the solid line in FIG. 1) communicates the first port and the fourth port and communicates the second port and the third port.
- the switching mechanism (24) in the second state (the state indicated by the dashed line in FIG. 1) communicates the first port and the third port, and communicates the second port and the fourth port.
- the heat source expansion valve (25) reduces the pressure of the refrigerant.
- the heat source expansion valve (25) is an outdoor expansion valve.
- the heat source expansion valve (25) is arranged between the first closing valve (15) and the heat source heat exchanger (22) in the heat source circuit (20a).
- the heat source expansion valve (25) is an electronic expansion valve whose degree of opening is adjustable.
- the plurality of indoor units (30) of this example include a first indoor unit (30A) and a second indoor unit (30B).
- the number of indoor units (30) may be three or more.
- the configurations of the first indoor unit (30A) and the second indoor unit (30B) are basically the same. Below, for convenience, the first indoor unit (30A) and the second indoor unit (30B) may be simply referred to as the indoor unit (30).
- the indoor unit (30) is a usage unit installed indoors such as a building.
- the term "indoor” as used herein is meant to include the space behind the ceiling panel.
- the indoor unit (30) of this example is of a ceiling installation type.
- the term "ceiling installation type” as used herein includes a ceiling hanging type in which the indoor unit (30) is suspended and a ceiling embedded type in which the indoor unit (30) is arranged in an open portion of the ceiling surface.
- the indoor unit (30) has a utilization expansion valve (31), a utilization heat exchanger (32), and a utilization fan (33).
- the utilization expansion valve (31) reduces the pressure of the refrigerant.
- the utilization expansion valve (31) is an indoor expansion valve.
- the utilization expansion valve (31) is arranged in the flow path on the liquid side of the utilization heat exchanger (32) in the utilization circuit (30a).
- the utilization expansion valve (31) is an electronic expansion valve whose degree of opening is adjustable.
- the utilization heat exchanger (32) is an indoor heat exchanger.
- the utilization heat exchanger (32) is a fin-and-tube air heat exchanger.
- the utilization heat exchanger (32) exchanges heat between the refrigerant flowing therein and the indoor air.
- the utilization fan (33) is placed in the vicinity of the utilization heat exchanger (32) indoors.
- the utilization fan (33) of this example is a centrifugal fan.
- the utilization fan (33) conveys air passing through the utilization heat exchanger (32).
- the indoor unit (30) has a second control device (C2) included in the air conditioning control section (AC).
- the second controller (C2) of each indoor unit (30) and the first controller (C1) of the outdoor unit (20) are connected to each other via a first communication line (W1).
- the first communication line (W1) is wired or wireless.
- the air conditioner (10) has a remote controller (40).
- One remote controller (40) of the present example is provided for each corresponding indoor unit (30).
- the remote controller (40) is a device for operating the air conditioner (10).
- the remote controller (40) has a first operating section (41) and a first display section (42) as functional sections.
- the term "functional unit” includes a functional unit realized only by hardware, a functional unit realized only by software, and a functional unit realized by cooperation between hardware and software.
- the first operation section (41) is a functional section for a person to input various instructions to the air conditioner (10).
- the 1st operation part (41) contains a switch, a button, or a touch panel.
- the first display section (42) is a functional section that displays settings for the air conditioner (10) and the state of the air conditioner (10).
- the first display (42) includes a display.
- the remote controller (40) has a third controller (C3) included in the air conditioning controller (AC).
- the third control device (C3) and the second control device (C2) of the indoor unit (30) are connected to each other via a second communication line (W2).
- the second communication line (W2) is wired or wireless.
- the air conditioning system (100) shown in FIG. 1 has a refrigerant sensor (45) as a detector serving as a safety device.
- the refrigerant sensor (45) is provided corresponding to all the indoor spaces (S) in this embodiment.
- the refrigerant sensor (45) is, for example, a semiconductor sensor.
- the refrigerant sensor (45) outputs a detection signal with a higher intensity (for example, a current value) as the concentration of the leaked refrigerant increases.
- the refrigerant sensor (45) is not limited to the semiconductor type, and may be of another type such as an infrared type.
- the refrigerant sensor (45) and the second controller (C2) of the first indoor unit (30A) are connected to each other by a third communication line (W3).
- the third communication line (W3) is wired or wireless.
- a detection signal output from the refrigerant sensor (45) is input to the second control device (C2) via the third communication line (W3).
- the air conditioning system (100) has a shutoff device (50) as a safety device.
- a shutoff device (50) is provided corresponding to an indoor space (S) determined to require a safety device.
- a shutoff device (50) is provided corresponding to the first indoor space (S1), that is, the first indoor unit (30A).
- the shutoff device (50) has a first shutoff valve (51) and a second shutoff valve (52).
- the first shutoff valve (51) is a liquid side shutoff valve.
- the first shutoff valve (51) of this example is provided in the first branch pipe (13b) connected to the first indoor unit (30A).
- the first cutoff valve (51) is an on-off valve such as a solenoid valve or an electric valve.
- the second shutoff valve (52) is a gas side shutoff valve.
- the second shutoff valve (52) of this example is provided in the second branch pipe (14b) connected to the first indoor unit (30A).
- the second cutoff valve (52) is an on-off valve such as an electromagnetic valve or an electric valve.
- the shut-off device (50) has a fourth control device (C4).
- the fourth control device (C4) and the second control device (C2) of the first indoor unit (30A) are connected to each other via a fourth communication line (W4).
- the fourth communication line (W4) is wired or wireless.
- the air conditioning system (100) has a ventilation device (55) as a safety device.
- a ventilator (55) is provided corresponding to the indoor space (S) determined to require a safety device.
- a ventilator (55) is provided corresponding to the first indoor space (S1), that is, the first indoor unit (30A).
- the ventilator (55) has a ventilation fan (56).
- the ventilation fan (56) exhausts the air in the indoor space (S) to the outside through an exhaust path (not shown).
- the ventilator (55) has a fifth controller (C5).
- the fifth control device (C5) and the second control device (C2) of the first indoor unit (30A) are connected to each other via a fifth communication line (W5).
- the fifth communication line (W5) is wired or wireless.
- both the shutoff device (50) and the ventilator (55) are provided in the indoor space (S) determined to require the safety device.
- only one of the ventilators (55) may be provided.
- the air conditioning system (100) has an alarm device (60) as a safety device.
- the alarm device (60) is provided corresponding to the indoor space (S) determined to require a safety device.
- an alarm device (60) is provided corresponding to the first indoor space (S1), that is, the first indoor unit (30A).
- the alarm device (60) has a light emitter (61) and a sound generator (62).
- the light emitting part (61) notifies a person of refrigerant leakage with light.
- the light emitting part (61) is, for example, an LED.
- the sound generator (62) notifies a person of refrigerant leakage by sound.
- the sound generator (62) is, for example, a speaker.
- the alarm device (60) has a sixth controller (C6).
- the sixth control device (C6) and the second control device (C2) of the first indoor unit (30A) are connected to each other via a sixth communication line (W6).
- the sixth communication line (W6) is wired or wireless.
- the air conditioning control section (AC) controls the operation of the air conditioner (10).
- the air conditioning control unit (AC) includes a first control device (C1), a second control device (C2), a third control device (C3), a first communication line (W1), a second communication line (W2), a third It includes a communication line (W3), a fourth communication line (W4), a fifth communication line (W5) and a sixth communication line (W6).
- the fourth control device (C4), the fifth control device (C5), and the sixth control device (C6) may also be configured as part of the air conditioning control section (AC).
- Each of the first control device (C1), the second control device (C2), the third control device (C3), the fourth control device (C4), the fifth control device (C5), and the sixth control device (C6) includes an MCU (Micro Control Unit), an electrical circuit, and an electronic circuit.
- the MCU includes a CPU (Central Processing Unit), a memory, and a communication interface. Various programs for the CPU to execute are stored in the memory.
- the first control device (C1) is the outdoor unit control section.
- the first control device (C1) controls the compressor (21), the heat source expansion valve (25), and the heat source fan (23).
- the second control device (C2) is the indoor unit control section.
- the second control device (C2) controls the utilization expansion valve (31) and the utilization fan (33).
- a detection signal from the refrigerant sensor (45) is input to the second control device (C2).
- the second control device (C2) determines whether or not a first condition indicating refrigerant leakage is satisfied.
- the second control device (C2) outputs a signal for activating the safety devices (50, 55, 60) when the first condition is satisfied.
- the third control device (C3) outputs an instruction based on the input of the first operation section (41) to the second control device (C2).
- the third control device (C3) causes the first display section (42) to display predetermined information according to the input of the first operation section (41).
- the fourth control device (C4) controls the opening/closing states of the first shutoff valve (51) and the second shutoff valve (52).
- the fourth control device (C4) closes the first shutoff valve (51) and the second shutoff valve (52). close up.
- the fifth controller (C5) controls the ventilation fan (56).
- the fifth control device (C5) operates the ventilation fan (56).
- the sixth control device (C6) controls the light emitting section (61) and the sound generating section (62).
- the sixth control device (C6) operates the light emitting section (61) and the sound generating section (62). .
- the air conditioner (10) is a system of equipment having one refrigerant circuit (11).
- an air conditioning system (1) including a plurality of systems of air conditioners (10) is configured.
- the air conditioning system (100) may have multiple air conditioners (10) and a central monitoring device (65).
- the central monitoring device (65) has a second operating section (66) and a second display section (67) as functional sections.
- the second operation section (66) is a functional section for a person (administrator, etc.) to input various instructions to each air conditioner (10).
- the 2nd operation part (66) contains a switch, a button, or a touch panel.
- the second display section (67) is a functional section that displays settings for each air conditioner (10) and the state of each air conditioner (10).
- the second display (67) includes a display.
- the central monitoring device (65) has a seventh control device (C7).
- the seventh control device (C7) and the air conditioning control section (AC) of each air conditioner (10) are connected to each other via a seventh communication line (W7).
- the seventh communication line (W7) is wired or wireless.
- a seventh controller (C7) includes an MCU, electrical circuits, and electronic circuits.
- the MCU includes a CPU, memory, and communication interface. Various programs for the CPU to execute are stored in the memory.
- the first control device (C1) operates the compressor (21) and the heat source fan (23), sets the switching mechanism (24) to the first state, and fully opens the heat source expansion valve (25).
- the second control device (C2) operates the utilization fan (33) and adjusts the utilization expansion valve (31) to a predetermined degree of opening.
- the first shutoff valve (51) and the second shutoff valve (52) are open.
- the refrigerant circuit (11) during cooling operation performs the first refrigeration cycle.
- the heat source heat exchanger (22) functions as a radiator (strictly speaking, a condenser), and the utilization heat exchanger (32) functions as an evaporator.
- the refrigerant compressed by the compressor (21) flows through the heat source heat exchanger (22).
- the heat source heat exchanger (22) the refrigerant releases heat to the outdoor air and condenses.
- the refrigerant condensed in the heat source heat exchanger (22) flows through the first communication pipe (13) and is branched to each utilization circuit (30a).
- the refrigerant is decompressed by the utilization expansion valve (31) and then flows through the utilization heat exchanger (32).
- the heat utilization heat exchanger (32) the refrigerant absorbs heat from the indoor air and evaporates.
- the refrigerant evaporated in each utilization heat exchanger (32) joins in the second communication pipe (14) and is sucked into the compressor (21).
- the first control device (C1) operates the compressor (21) and the heat source fan (23), puts the switching mechanism (24) in the second state, and adjusts the heat source expansion valve (25) to a predetermined degree of opening. do.
- the second control device (C2) operates the utilization fan (33) and adjusts the utilization expansion valve (31) to a predetermined degree of opening.
- the first shutoff valve (51) and the second shutoff valve (52) are open.
- the refrigerant circuit (11) during heating operation performs the second refrigeration cycle.
- the utilization heat exchanger (32) functions as a radiator (strictly speaking, a condenser), and the heat source heat exchanger (22) functions as an evaporator.
- the refrigerant compressed by the compressor (21) flows through the second communication pipe (14) and is branched to each utilization circuit (30a).
- each utilization circuit (30a) refrigerant flows through a utilization heat exchanger (32).
- the utilization heat exchanger (32) the refrigerant releases heat to the room air and condenses.
- the refrigerant condensed in each utilization heat exchanger (32) is decompressed in each utilization expansion valve (31) and then joins in the first communication pipe (13).
- the refrigerant in the first communication pipe (13) is decompressed by the heat source expansion valve (25) and then flows through the heat source heat exchanger (22).
- the heat source heat exchanger (22) the refrigerant absorbs heat from outdoor air and evaporates.
- the refrigerant evaporated in the heat source heat exchanger (22) is sucked into the compressor (21).
- step S1 the refrigerant sensor (45) detects refrigerant leakage.
- a detected value of the refrigerant sensor (45) is input to the second controller (C2) of the first indoor unit (30A) via the third communication line (W3).
- step S2 the second control device (C2) determines whether or not a first condition indicating refrigerant leakage is satisfied based on the detection signal of the refrigerant sensor (45).
- the first condition is whether the detected value (for example, current value) of the refrigerant sensor (45) is equal to or greater than a predetermined value.
- the second control device (C2) outputs a signal to activate the safety device (50, 55, 60) when the first condition is satisfied.
- step S3 When the signal output from the second control device (C2) is input to the safety device (50, 55, 60), the safety device (50, 55, 60) operates in step S3. Specifically, in step S3, when the signal output from the second control device (C2) is input to the fourth control device (C4), the fourth control device (C4) switches the cutoff device (50). The first shutoff valve (51) and the second shutoff valve (52) are closed. Further, in step S3, when the signal output from the second control device (C2) is input to the fifth control device (C5), the fifth control device (C5) operates the ventilation fan (56).
- step S3 when the signal output from the second control device (C2) is input to the sixth control device (C6), the sixth control device (C6) controls the light emitting section (61) and the sound generating section. (62) is activated. More specifically, the sixth controller (C6) generates light from the light emitter (61). In addition, the sixth control device (C6) causes the sound generator (62) to generate a sound such as a warning sound.
- the refrigerant in the refrigerant circuit (11) of the air conditioner (10) of one system can be prevented from leaking into the first indoor space (S1).
- the installation support system of the present disclosure is used by a user such as a contractor when installing an air conditioner (10) having safety devices (45, 50, 55, 60) and multiple indoor units (30) interlocking. be done.
- a user can use the installation support system of the present disclosure to quickly and appropriately perform the work required to release the interlock.
- FIG. 5 is a block diagram showing a schematic configuration of an installation support device (70), which is an example of the installation support system of the present disclosure.
- the installation support device (70) may be composed of a dedicated portable terminal such as a notebook computer or tablet, for example.
- the installation support device (70) mainly includes a storage section (71), a determination section (72), and an output section (73).
- the installation support device (70) may further comprise an input section (75) and a communication section (76).
- the storage unit (71) is mainly composed of storage devices such as RAM, HDD, and SSD.
- the storage section (71) stores a program executed by the determination section (72), data used by the program, and the like. Specifically, the storage unit (71) stores, as information of the air conditioner (10), for example, whether interlocks with the safety devices (45, 50, 55, 60) are released for the plurality of indoor units (30). Stores information about whether or not In addition, the storage unit (71) stores, as information of the air conditioner (10), for example, the floor area of the indoor space (S) in which each indoor unit (30) is installed, the refrigerant used in the air conditioner (10), Information including the amount and length of pipes connected to each indoor unit (30) may be stored.
- the determination unit (72) is mainly composed of a CPU.
- the determination section (72) has an interlock release state determination section (72A) and a safety device necessity determination section (72B).
- the interlock release state determination section (72A) determines the interlock release state of the plurality of indoor units (30) based on the information of the air conditioner (10) stored in the storage section (71).
- the safety device necessity determination unit (72B) selects the safety devices (45, 50, 55, 60) for each of the indoor units (30B) based on the information of the air conditioner (10) stored in the storage unit (71). ) is necessary.
- the interlock release state determination section (72A) and the safety device necessity determination section (72B) may be programs executed by the CPU. Details of the interlock release state determination section (72A) and the safety device necessity determination section (72B) will be described later.
- the output section (73) outputs the judgment result of the judgment section (72).
- the output section (73) may have a display section (74) such as a display or a printer.
- the output section (73) may have only a function of outputting the judgment result of the judgment section (72) to a display device outside the installation support device (70).
- an interface or the like for starting the processing of the program executed by the determination section (72) may be displayed on the display section (74).
- the input unit (75) may be an input device such as a keyboard or mouse.
- a user of the installation support device (70), such as an installation worker, may operate the installation support device (70) by operating the input unit (75).
- the input section (75) may be configured integrally with the output section (73) as a display with a touch panel function.
- the communication unit (76) is an interface for communication networks and external devices.
- the communication unit (76) is, for example, a network interface for connecting the installation support device (70) to a communication network such as the Internet, or a general-purpose interface for connecting the installation support device (70) to an external device such as a display. There may be.
- the communication unit (76) and the air conditioning control unit (AC) of the air conditioner (10) are connected to each other via the eighth communication line (W8).
- the eighth communication line (W8) is wired or wireless.
- the installation support device (70) By connecting the installation support device (70) to the air conditioner (10) (for example, the air conditioning control unit (AC)) via the communication unit (76) and the eighth communication line (W8), the installation support device (70 ) can acquire various types of information about the air conditioner (10) and store them in the storage unit (71). Further, when the output section (73) does not have the display section (74), the output section (73) transmits the determination result of the determination section (72) to an external display or the like via the communication section (76). be able to.
- the air conditioner (10) for example, the air conditioning control unit (AC)
- the eighth communication line (W8) the installation support device (70 ) can acquire various types of information about the air conditioner (10) and store them in the storage unit (71). Further, when the output section (73) does not have the display section (74), the output section (73) transmits the determination result of the determination section (72) to an external display or the like via the communication section (76). be able to.
- FIG. 6 is a flow chart showing an example of the interlock release state determination operation among the operations (installation assistance method) of the installation support device (70) shown in FIG.
- the installation support device (70) communicates with the air conditioner (10), specifically the air conditioning controller (AC), via the communication unit (76) and the eighth communication line (W8). shall be connected to
- the installation support device (70) receives information on the air conditioner (10) from the plurality of indoor units (30) via the communication unit (76) and the eighth communication line (W8). Information as to whether or not the lock is released is acquired and stored in a storage section (71). Specifically, the installation support device (70) recognizes the connected indoor unit (30) via the communication unit (76) and the eighth communication line (W8), and the recognized indoor unit (30) requests information whether the interlock line is shorted or not. After that, the installation support device (70) causes the storage unit (71) to store information on whether or not the interlock line is short-circuited, which is acquired from the indoor unit (30).
- the installation support device (70) provides multiple types of safety devices ( 45, 50, 55, 60) with which safety device (45, 50, 55, 60) is unlocked.
- each indoor unit (30) (specifically, the second control device (C2)) can grasp whether or not it is connected to each safety device (45, 50, 55, 60) via an interlock line. .
- the indoor unit (30) transmits information as to whether or not the interlock line is short-circuited to the installation support device (70), and based on the information, the installation support device (70) determines whether or not the interlock line is short-circuited in step S12, which will be described later. (70) determines whether the interlock of the indoor unit (30) is released.
- the indoor unit (30) (second control device (C2)) itself determines whether or not the interlock is released based on information on whether or not the interlock line is short-circuited. You can make a decision.
- step S12 the interlock release state determination section (72A) of the installation support device (70) determines whether each room is in the room based on the information of the air conditioner (10) stored in the storage section (71) in step S11. Judge whether or not the interlock of the machine (30) is released.
- the interlock release state determination unit (72A) determines whether each safety device for each indoor unit (30) It may be determined whether the interlock with (45, 50, 55, 60) is released.
- step S12 when it is determined in step S12 that all the indoor units (30) are unlocked, the operation of the air conditioner (10) is permitted.
- step S12 if it is determined in step S12 that the interlock of any of the indoor units (30) is not released, in step S13, the output section (73) of the installation support device (70) causes the interlock to be released in step S12.
- the release state determining section (72A) outputs the result of determining whether or not the interlock of each indoor unit (30) is released. If multiple types of safety devices (45, 50, 55, 60) are provided for each indoor unit (30), the output section (73) should be one of the multiple indoor units (30) that is unlocked. Regarding the indoor unit (30) that is not may be output. Further, when the output section (73) has the display section (74), the display section (74) may display the determination result of the interlock release state of each indoor unit (30) to the user such as the installation worker. good.
- step S12 When the information of the indoor unit (30) whose interlock has not been released is output, for example, a later-described safety device necessity judgment shown in FIG. After checking, if necessary, the interlock release operation is performed for the indoor unit (30). After performing necessary measures for all the indoor units (30) for which it is determined that the interlock has not been released in step S12, the processing from step S11 onward is performed again, and in step S12 all indoor units (30) If it is determined that the interlock has been released, the operation of the air conditioner (10) is permitted.
- FIG. 7 is a flow chart showing an example of safety device necessity determination operation among the operations (installation support method) of the installation support device (70) shown in FIG.
- the installation of the safety device (45, 50, 55, 60) is necessary and unnecessary. There are things.
- the installer must release the interlock, for example by shorting the dedicated interlock wiring. .
- the installation support device (70) obtains, as information of the air conditioner (10), the floor area of the indoor space (S) in which each indoor unit (30) is installed, and the information used in the air conditioner (10). Information including the amount of refrigerant to be supplied and the length of the pipe connected to each indoor unit (30) is acquired and stored in the storage section (71).
- the floor area of the indoor space (S) means the area of the bottom surface of the cylindrical body when the shape of the indoor space (S) is regarded as a cylindrical body such as a square column or a cylinder.
- the installation support device (70) takes in spatial information, which is drawing data (CAD file, PDF file, etc.) regarding the indoor space (S) from the outside via the communication unit (76), and based on the spatial information, The floor area of the indoor space (S) may be obtained.
- the installation support device (70) may acquire spatial information stored in an external storage device such as a USB memory via the communication section (76), which is a general-purpose interface.
- the installation support device (70) may acquire spatial information stored in a server or the like on the network via the communication section (76), which is a network interface.
- image data obtained by scanning a printed drawing of the indoor space (S) using an external input device such as an image scanner is sent to the installation support device (70) via the communication unit (76), which is a general-purpose interface, as spatial information. can be taken as
- the amount of refrigerant used in the air conditioner (10) and the length of the pipes connected to each indoor unit (30) depend on the specifications of the outdoor unit (20) and the indoor unit (30) (compressor capacity, It is determined based on the volume of the refrigerant channel of the heat exchanger, etc.), the number of the indoor units (30), and the like. These pieces of information may be read from an external storage device such as a USB memory via the communication unit (76), which is a general-purpose interface, or may be read from a server on the network via the communication unit (76), which is a network interface. etc. Also, the number of indoor units (30) and the length of pipes connected to each indoor unit (30) may be input by the user of the installation support device (70) via the input unit (75). Alternatively, it may be automatically set by the installation support device (70) based on a drawing or the like of the property where the air conditioner (10) is installed.
- step S22 the safety device necessity determination section (72B) of the installation support device (70) determines the safety device for each room based on the information of the air conditioner (10) stored in the storage section (71) in step S21. Determine the necessity of providing safety devices (45, 50, 55, 60) for the machine (30).
- the safety device necessity determination unit (72B) determines the necessity of installing the safety device (45, 50, 55, 60) based on at least the floor area of the indoor space (S).
- S) Calculate the allowable amount of refrigerant.
- the allowable amount of refrigerant is the indoor space (S) in which the indoor unit (30) is installed, when the refrigerant leaks from the air conditioner (10) equipped with the indoor unit (30).
- ) is the amount of refrigerant that is allowed to stagnate. That is, it is necessary to provide safety devices (45, 50, 55, 60) for the indoor unit (30) in which refrigerant exceeding the allowable amount of refrigerant may stay in the indoor space (S) when the refrigerant leaks.
- the safety device necessity determination unit (72B) stores, for example, the floor area of the indoor space (S) stored in the storage unit (71), the leakage height of the indoor space (S), and the refrigerant parameter. Based on, the allowable amount of refrigerant in the indoor space (S) may be calculated.
- the leakage height of the indoor space (S) is the height position of the location where the refrigerant leaks when the refrigerant leaks from the indoor unit (30) or the like into the indoor space (S).
- the leakage height of the indoor space (S) is the position based on the floor height position of the indoor space (S).
- the leakage height of the indoor space (S) varies depending on the type of indoor unit (30) installed in the indoor space (S). For example, in the case of the indoor unit (30) of the type embedded in the ceiling of the indoor space (S), the leakage height of the indoor space (S) is the height position of the ceiling of the indoor space (S).
- the leak height in the indoor space (S) is the height position of the outlet of the indoor unit (30).
- the leakage height of the indoor space (S) may be preset to a predetermined value according to the dimensions of the indoor space (S) and the type of the indoor unit (30) installed in the indoor space (S). .
- the safety device necessity determination unit (72B) sets the leakage height of the indoor space (S) based on the spatial information of the indoor space (S) and the type of the indoor unit (30). good too.
- Refrigerant parameters are set according to the properties of the refrigerant used in the air conditioner (10).
- the refrigerant parameters are calculated, for example, based on the refrigerant density, refrigerant flammability, and refrigerant lower flammability limit (LFL).
- the safety device necessity determination unit (72B) may calculate the allowable refrigerant amount V based on, for example, the following formula (1).
- the variable k is a dimensionless value based on the combustibility of the refrigerant used by the air conditioner (10). For example, k may be set to 0.25 if the refrigerant is flammable and k may be set to 0.50 if the refrigerant is non-flammable.
- a combustible refrigerant is, for example, R32.
- a nonflammable refrigerant is, for example, carbon dioxide.
- the variable L is the lower combustion limit of the refrigerant used by the air conditioner (10).
- the lower combustion limit of the refrigerant is the lower limit of the concentration of the refrigerant in the combustion range. In the flammable range, the mixture of refrigerant and air is combustible or ignitable.
- the variable L is a dimensionless value.
- a refrigerant parameter corresponds to the product of the variable k and the variable L.
- the variable h is the leak height (unit: m) of the indoor space (S)
- the variable S is the floor area (unit: m 2 ) of the indoor space (S).
- the allowable refrigerant amount V (unit: m 3 ) is calculated by multiplying all four variables k, L, h, and S.
- the allowable refrigerant amount V of the indoor space (S) calculated by the safety device necessity determination section (72B) may be stored in the storage section (71).
- the safety device necessity determination unit (72B) determines the allowable refrigerant amount V in the indoor space (S) calculated as described above and the air conditioner ( 10) Compare the amount of refrigerant used (hereinafter referred to as the amount of refrigerant used), and if the amount of refrigerant used is greater than the allowable refrigerant amount V, the indoor unit installed in the indoor space (S) Regarding (30), it is judged that it is necessary to install a safety device (45, 50, 55, 60).
- the safety device necessity determination unit (72B) may determine the necessity of providing safety devices (45, 50, 55, 60) for all indoor spaces (S), that is, all indoor units (30), Alternatively, it may be determined whether the safety device (45, 50, 55, 60) is necessary for the indoor unit (30) for which the interlock is determined not to be released by the interlock release state determination section (72A). .
- the output section (73) of the installation support device (70) causes the safety device necessity determination section (72B) to determine whether the safety device (45, 50, 55, 60) and output the result of judging the necessity of providing.
- the output unit (73) determines whether or not the safety device (45, 50, 55, 60) is required for the indoor unit (30), which is not interlocked among the plurality of indoor units (30B). information may be output.
- the display section (74) displays the judgment result of the necessity of the safety device (45, 50, 55, 60) for each indoor unit (30). It may be displayed to a user such as an installer.
- the installation support device (70) shown in FIG. 5 has been described as one implementation example of the installation support system of the present disclosure.
- the installation support method (steps S11 to S13 and steps S21 to S23) shown in FIGS. ) is implemented.
- the implementation form of the installation support system of the present disclosure is not limited to the installation support device (70).
- the air conditioning control unit (AC) specifically, the first controller (C1) of the outdoor unit (20) or the second controller (C2) of each indoor unit (30)
- the centralized monitoring device (65 ) or the like may be provided with a function equivalent to that of the installation support device (70) to implement the installation support system of the present disclosure.
- each function of the installation support device (70) may be distributed among a plurality of control devices.
- the installation support device (70) is configured using a dedicated portable terminal such as a notebook computer or tablet, but instead of this, the installation support device (70) mainly includes the output section (73) ( (including the display unit (74)) and the input unit (75) are provided in a terminal device (for example, a smartphone), and the functional units mainly corresponding to the storage unit (71) and the judgment unit (72) are provided in the server device. may be set to The terminal device and the server device are connected to each other via a communication line such as the Internet, thereby implementing the installation support system of the present disclosure.
- the installation support system of the present embodiment is an installation support system for an air conditioner (10) having safety devices (45, 50, 55, 60) for preventing refrigerant leakage and a plurality of indoor units (30) interlocking. is.
- the installation support system of the present embodiment determines the interlock release state of the plurality of indoor units (30) based on the information of the air conditioner (10), and outputs the determination result. Therefore, even if the operation of the air conditioner (10) cannot be started because the interlock is not released, the installation worker can use the output result of the installation support system to check the interlock release state of each indoor unit (30). Easy to grasp.
- the indoor unit (30) whose interlock is not released or the indoor unit (30) whose interlock is released can be determined, so the indoor unit (30) that requires additional work can be grasped. Therefore, the work required to release the interlock can be performed quickly and appropriately, so that the installation work of the air conditioner (10) can be performed quickly.
- the determination result of the interlock released state of each indoor unit (30) is displayed, so that the installation worker can easily determine whether the interlock state of each indoor unit (30) has been released. This makes it easier to grasp the unlocked state.
- the interlock release state of each indoor unit (30) is determined based on the information. , the judgment result can be output.
- the plurality of indoor units (30) are interlocked with a plurality of types of safety devices (45, 50, 55, 60), and the plurality of indoor units (30) , information as to which safety device (45, 50, 55, 60) among the plurality of types of safety devices (45, 50, 55, 60) is unlocked.
- information as to which safety device (45, 50, 55, 60) among the plurality of types of safety devices (45, 50, 55, 60) is unlocked.
- Information can be output.
- the installation worker can more quickly and appropriately perform the work required to release the interlock.
- the need to provide safety devices (45, 50, 55, 60) for each of the plurality of indoor units (30) is determined, and interlock among the plurality of indoor units (30) is determined.
- Information as to whether or not the safety device (45, 50, 55, 60) is necessary may be output for the indoor unit (30) that has not been released. In this way, the necessity of the safety device (45, 50, 55, 60) related to the indoor unit (30) that needs to be unlocked is output. , the work required to release the interlock can be grasped more accurately.
- the installation support device (70) of the present embodiment is an implementation example of the installation support system described above, and includes a plurality of indoor safety devices (45, 50, 55, 60) interlocking with the safety devices (45, 50, 55, 60) for countermeasures against refrigerant leakage.
- the installation support device (70) includes a storage unit (71) for storing information of the air conditioner (10), and a plurality of indoor units based on the information of the air conditioner (10) stored in the storage unit (71). It comprises a judgment section (72) for judging the interlock release state of (30), and an output section (73) for outputting the judgment result of the judgment section (72).
- the installation worker can use the output result of the installation support device (70) to interlock each indoor unit (30).
- the released state can be easily grasped. Therefore, the work required to release the interlock can be performed quickly and appropriately, so that the installation work of the air conditioner (10) can be performed quickly.
- the output section (73) includes the display section (74)
- the judgment result of the interlock release state of each indoor unit (30) is displayed, so that the installation worker can makes it easier to grasp the interlock release state of each indoor unit (30).
- the installation support method of the present embodiment is an installation support method for an air conditioner (10) having safety devices (45, 50, 55, 60) for refrigerant leakage countermeasures and a plurality of indoor units (30) interlocked. is.
- the installation support method of the present embodiment determines the interlock release state of the plurality of indoor units (30) based on the information of the air conditioner (10), and outputs the determination result. Therefore, even if the operation of the air conditioner (10) cannot be started because the interlock is not released, the installation work of the air conditioner (10) can be quickly carried out.
- the air conditioner (10) may not be a multi-type, but may be a pair type having one indoor unit (30) and one outdoor unit (20).
- the air conditioner (10) may have a plurality of outdoor units (20).
- the refrigerant filled in the refrigerant circuit (11) may be a refrigerant other than R32.
- the refrigerant is Class 3 (strongly flammable), Class 2 (weakly flammable), and Subclass 2L (slightly flammable) in the US ASHRAE34 Designation and safety classification of refrigerant standard or ISO817 Refrigerants- Designation and safety classification standard. including.
- the refrigerant is a single refrigerant consisting of R1234yf, R1234ze(E), R516A, R445A, R444A, R454C, R444B, R454A, R455A, R457A, R459B, R452B, R454B, R447B, R32, R447A, R446A, and R459 .
- the refrigerant is two selected from R1234yf, R1234ze(E), R516A, R445A, R444A, R454C, R444B, R454A, R455A, R457A, R459B, R452B, R454B, R447B, R32, R447A, R446A, and R459 It is a mixed refrigerant composed of the above refrigerants.
- the switching mechanism (24) does not have to be a four-way switching valve.
- the switching mechanism (24) may be configured by combining four flow paths and on-off valves for opening and closing these, or may be configured by combining two three-way valves.
- the heat source expansion valve (25) and utilization expansion valve (31) may not be electronic expansion valves, but may be temperature-sensitive expansion valves or rotary expansion mechanisms.
- the indoor unit (30) may not be ceiling-mounted, but may be wall-mounted or floor-mounted.
- the present disclosure is useful for an air conditioner installation support system, installation support device, and installation support method.
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Abstract
Description
以下、実施形態について図面を参照しながら説明する。尚、以下の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。また、各図面は、本開示を概念的に説明するためのものであるから、理解の容易のために必要に応じて寸法、比又は数を誇張又は簡略化して表す場合がある。
本開示の据え付け支援システムは、冷媒漏洩対策のための安全装置(45,50,55,60)とインターロックを取る複数の室内機(30)を備える空気調和装置(10)の据え付け支援システムであって、空気調和装置(10)の情報に基づき各室内機(30)のインターロック解除状態を判断し、判断結果を出力する。複数の室内機(30)は、少なくとも第1室内機(30A)及び第2室内機(30B)を含む。安全装置(45,50,55,60)は、冷媒漏洩にに対する安全対策が必要な室内空間(S)に対応して設けられる。安全装置(45,50,55,60)は、冷媒の漏洩を検出するための冷媒センサ(45)と、冷媒センサ(45)の検出信号に基づき、冷媒の漏洩の対策を講じる装置、具体的には、遮断装置(50)、換気装置(55)、及び警報装置(60)の少なくとも1つを含む。
本開示の据え付け支援システムの適用対象となる空気調和装置(10)を備えた空調システム(100)について説明する。図1及び図2に示すように、空調システム(100)は、空気調和装置(10)と、安全装置(45,50,55,60)とを備える。
室外機(20)は、室外に配置される熱源ユニットである。室外機(20)は、例えばビルなどの屋上や地上に配置される。室外機(20)は、圧縮機(21)、熱源熱交換器(22)、及び熱源ファン(23)を有する。室外機(20)は、冷媒の流路を切り換える切換機構(24)と、熱源膨張弁(25)とを有する。室外機(20)は、空調制御部(AC)に含まれる第1制御装置(C1)を有する。
本例の複数の室内機(30)は、第1室内機(30A)と、第2室内機(30B)とを含む。室内機(30)の数は、3つ以上であってもよい。第1室内機(30A)及び第2室内機(30B)の構成は、基本的に同じある。以下では、便宜上、第1室内機(30A)及び第2室内機(30B)を単に室内機(30)と述べる場合がある。
空気調和装置(10)は、リモートコントローラ(40)を有する。本例のリモートコントローラ(40)は、対応する室内機(30)のそれぞれに1つずつ設けられる。リモートコントローラ(40)は、空気調和装置(10)を操作するための機器である。図2に示すように、リモートコントローラ(40)は、機能部としての第1操作部(41)及び第1表示部(42)を有する。尚、本開示において「機能部」という用語は、ハードウェアのみによって実現される機能部、ソフトウェアのみによって実現される機能部、及びハードウェアとソフトウェアとが協調して実現される機能部を含む。
図1に示す空調システム(100)は、安全装置となる検知器として、冷媒センサ(45)を有する。冷媒センサ(45)は、本実施形態では全ての室内空間(S)に対応して設けられる。冷媒センサ(45)は、例えば半導体方式のセンサである。冷媒センサ(45)は、漏洩した冷媒の濃度が高くなるほど、強度(例えば電流値)の大きな検出信号を出力する。冷媒センサ(45)は、半導体方式に限られず、例えば赤外線方式などの他の方式であってもよい。冷媒センサ(45)と、第1室内機(30A)の第2制御装置(C2)とは、第3通信線(W3)によって互いに接続される。第3通信線(W3)は、有線又は無線である。冷媒センサ(45)から出力された検出信号は第3通信線(W3)を介して第2制御装置(C2)に入力される。
空調制御部(AC)は、空気調和装置(10)の動作を制御する。空調制御部(AC)は、第1制御装置(C1)、第2制御装置(C2)、第3制御装置(C3)、第1通信線(W1)、第2通信線(W2)、第3通信線(W3)、第4通信線(W4)、第5通信線(W5)、及び第6通信線(W6)を含む。第4制御装置(C4)、第5制御装置(C5)、及び第6制御装置(C6)についても、、空調制御部(AC)の一部として構成してもよい。第1制御装置(C1)、第2制御装置(C2)、第3制御装置(C3)、第4制御装置(C4)、第5制御装置(C5)、及び第6制御装置(C6)のそれぞれは、MCU(Micro Control Unit:マイクロコントローラユニット)、電気回路、電子回路を含む。MCUは、CPU(Central Processing Unit:中央演算処理装置)、メモリ、通信インターフェースを含む。メモリには、CPUが実行するための各種のプログラムが記憶されている。
空気調和装置(10)は、1つの冷媒回路(11)を有する1系統の装置である。ビルなどにおいては、複数の系統の空気調和装置(10)を含む空気調和システム(1)が構成される。この場合、図3に示すように、空調システム(100)は、複数の空気調和装置(10)と、集中監視装置(65)とを有してもよい。集中監視装置(65)は、機能部としての第2操作部(66)及び第2表示部(67)を有する。第2操作部(66)は、人(管理者など)が各空気調和装置(10)に対する各種の指示を入力するための機能部である。第2操作部(66)は、スイッチ、ボタン、又はタッチパネルを含む。第2表示部(67)は、各空気調和装置(10)に対する設定内容や、各空気調和装置(10)の状態を表示する機能部である。第2表示部(67)は、ディスプレイを含む。集中監視装置(65)は、第7制御装置(C7)を有する。第7制御装置(C7)と、各空気調和装置(10)の空調制御部(AC)とは、第7通信線(W7)を介して互いに接続される。第7通信線(W7)は有線又は無線である。第7制御装置(C7)は、MCU、電気回路、電子回路を含む。MCUは、CPU、メモリ、通信インターフェースを含む。メモリには、CPUが実行するための各種のプログラムが記憶されている。
空気調和装置(10)の運転動作について図1を参照しながら説明する。空気調和装置(10)は、冷房運転と暖房運転とを切り換えて行う。尚、図1では、冷房運転時の冷媒の流れを実線矢印で示し、暖房運転時の冷媒の流れを破線矢印で示している。
冷媒漏洩時の空調システム(100)の動作について図4を参照しながら説明する。尚、第1室内機(30A)から冷媒が漏洩すると、漏洩した冷媒は第1室内空間(S1)に流れる。具体的には、冷媒の密度は空気の密度より大きいため、冷媒は第1室内空間(S1)の下方へ流れる。その結果、第1室内空間(S1)の冷媒の濃度が徐々に高くなる。
本開示の据え付け支援システムは、安全装置(45,50,55,60)とインターロックを取る複数の室内機(30)を備える空気調和装置(10)の据え付け時に、施工業者などのユーザに用いられる。ユーザは、本開示の据え付け支援システムを利用して、インターロックの解除に必要な作業を迅速且つ適切に行うことができる。
図6は、図5に示す据え付け支援装置(70)の動作(据え付け支援方法)のうちインターロック解除状態判断動作の一例を示すフロー図である。尚、以下の説明では、据え付け支援装置(70)は、通信部(76)及び第8通信線(W8)を介して、空気調和装置(10)、具体的には空調制御部(AC))に接続されているものとする。
図7は、図5に示す据え付け支援装置(70)の動作(据え付け支援方法)のうち安全装置必要性判断動作の一例を示すフロー図である。尚、安全装置(45,50,55,60)とのインターロックが解除されていない室内機(30)には、安全装置(45,50,55,60)の設置が必要なものと不要なものとがある。安全装置(45,50,55,60)の設置が不要な室内機(30)については、据え付け作業者は、例えば専用のインターロック配線を短絡するなどして、インターロックを解除する必要がある。
式(1)において、変数kは、空気調和装置(10)が使用する冷媒の燃焼性に基づく、無次元の値である。例えば、冷媒が可燃性である場合、kは0.25に設定され、冷媒が不燃性である場合、kは0.50に設定されてもよい。可燃性の冷媒は、例えば、R32である。不燃性の冷媒は、例えば、二酸化炭素である。
ここまで、本開示の据え付け支援システムの一実装例として、図5に示す据え付け支援装置(70)について説明してきた。据え付け支援装置(70)においては、記憶部(71)にに記憶されたプログラムがコンピュータにより実行されることによって、図6及び図7に示す据え付け支援方法(ステップS11~S13及びS21~S23の処理)が実施される。
本実施形態の据え付け支援システムは、冷媒漏洩対策のための安全装置(45,50,55,60)とインターロックを取る複数の室内機(30)を備える空気調和装置(10)の据え付け支援システムである。本実施形態の据え付け支援システムは、空気調和装置(10)の情報に基づいて、複数の室内機(30)のインターロック解除状態を判断し、判断結果を出力する。このため、インターロックが解除されないために空気調和装置(10)の運転を開始できない場合でも、据え付け作業者は、据え付け支援システムの出力結果を用いて各室内機(30)のインターロック解除状態を容易に把握できる。具体的には、インターロックが解除されていない室内機(30)、又はインターロックが解除されている室内機(30)を判断することができるので、追加で作業が必要な室内機(30)を把握できる。従って、インターロックの解除に必要な作業を迅速且つ適切に行うことができるので、空気調和装置(10)の据え付け作業を迅速に実施することができる。
本実施形態の据え付け支援システムにおいて、複数の室内機(30)のうちインターロックが解除されていない室内機(30)に関して、複数種類の安全装置(45,50,55,60)のうちいずれの安全装置(45,50,55,60)とのインターロックが解除されていないかという情報を出力してもよい。このようにすると、出力された情報を用いて、据え付け作業者は、インターロックの解除に必要な作業をより一層把握しやすくなる。
前記実施形態(変形例を含む。以下同じ。)においては、以下の構成としてもよい。
30 室内機
30A 第1室内機
30B 第2室内機
45 冷媒センサ(安全装置)
50 遮断装置(安全装置)
55 換気装置(安全装置)
60 警報装置(安全装置)
70 据え付け支援装置
71 記憶部
72 判断部
73 出力部
74 表示部
S 室内空間
S1 第1室内空間
S2 第2室内空間
Claims (10)
- 冷媒漏洩対策のための安全装置(45,50,55,60)とインターロックを取る第1室内機(30A)及び第2室内機(30B)を備える空気調和装置(10)の据え付け支援システムであって、
前記空気調和装置(10)の情報に基づき前記第1室内機(30A)及び前記第2室内機(30B)のインターロック解除状態を判断し、判断結果を出力する
空気調和装置の据え付け支援システム。 - 請求項1の空気調和装置の据え付け支援システムにおいて、
前記判断結果をユーザに表示する
空気調和装置の据え付け支援システム。 - 請求項1又は2の空気調和装置の据え付け支援システムにおいて、
前記第1室内機(30A)及び前記第2室内機(30B)からインターロックが解除されているかどうかの情報を取得する
空気調和装置の据え付け支援システム。 - 請求項3の空気調和装置の据え付け支援システムにおいて、
前記第1室内機(30A)及び前記第2室内機(30B)は、複数種類の安全装置(45,50,55,60)とインタ-ロックが取られており、
前記第1室内機(30A)及び前記第2室内機(30B)から、前記複数種類の安全装置(45,50,55,60)のうちいずれの安全装置(45,50,55,60)とのインターロックが解除されているかという情報を取得する
空気調和装置の据え付け支援システム。 - 請求項4の空気調和装置の据え付け支援システムにおいて、
前記第1室内機(30A)及び前記第2室内機(30B)のうちインターロックが解除されていない室内機(30A,30B)に関して、前記複数種類の安全装置(45,50,55,60)のうちいずれの安全装置(45,50,55,60)とのインターロックが解除されていないかという情報を出力する
空気調和装置の据え付け支援システム。 - 請求項1~5のいずれか1項の空気調和装置の据え付け支援システムにおいて、
前記第1室内機(30A)及び前記第2室内機(30B)のそれぞれについて前記安全装置(45,50,55,60)を設ける必要性を判断し、前記第1室内機(30A)及び前記第2室内機(30B)のうちインターロックが解除されていない室内機(30A,30B)に関して、前記安全装置(45,50,55,60)が必要か否かの情報を出力する
空気調和装置の据え付け支援システム。 - 請求項6の空気調和装置の据え付け支援システムにおいて、
前記第1室内機(30A)及び前記第2室内機(30B)が据え付けられる室内空間(S1,S2)の床面積、前記空気調和装置(10)で使用される冷媒量、並びに前記第1室内機(30A)及び前記第2室内機(30B)と接続される配管の長さを含む情報を取得し、取得した情報に基づいて、前記第1室内機(30A)及び前記第2室内機(30B)について前記安全装置(45,50,55,60)を設ける必要性を判断する
空気調和装置の据え付け支援システム。 - 冷媒漏洩対策のための安全装置(45,50,55,60)とインターロックを取る第1室内機(30A)及び第2室内機(30B)を備える空気調和装置(10)の据え付け支援装置であって、
前記空気調和装置(10)の情報を記憶する記憶部(71)と、
前記記憶部(71)に記憶された前記空気調和装置(10)の情報に基づき、前記第1室内機(30A)及び前記第2室内機(30B)のインターロック解除状態を判断する判断部(72)と、
前記判断部(72)の判断結果を出力する出力部(73)とを備える
空気調和装置の据え付け支援装置。 - 請求項8の空気調和装置の据え付け支援装置において、
前記出力部(73)は、前記判断結果をユーザに表示する表示部(74)を含む
空気調和装置の据え付け支援装置。 - 冷媒漏洩対策のための安全装置(45,50,55,60)とインターロックを取る第1室内機(30A)及び第2室内機(30B)を備える空気調和装置(10)の据え付け支援方法であって、
前記空気調和装置(10)の情報に基づいて、前記第1室内機(30A)及び前記第2室内機(30B)のインターロック解除状態を判断し、判断結果を出力する
空気調和装置の据え付け支援方法。
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