WO2021166846A1 - Système d'aide à la conception, programme d'aide à la conception et procédé d'aide à la conception - Google Patents

Système d'aide à la conception, programme d'aide à la conception et procédé d'aide à la conception Download PDF

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Publication number
WO2021166846A1
WO2021166846A1 PCT/JP2021/005507 JP2021005507W WO2021166846A1 WO 2021166846 A1 WO2021166846 A1 WO 2021166846A1 JP 2021005507 W JP2021005507 W JP 2021005507W WO 2021166846 A1 WO2021166846 A1 WO 2021166846A1
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Prior art keywords
unit
air conditioner
refrigerant
rooms
volume
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PCT/JP2021/005507
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English (en)
Japanese (ja)
Inventor
佳宏 春田
裕一 柳
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ダイキン工業株式会社
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Publication of WO2021166846A1 publication Critical patent/WO2021166846A1/fr

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    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD

Definitions

  • design support system design support program, and design support method.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2016-173224
  • the necessity of safety measures is judged at the stage of designing an air conditioner in a building.
  • the design support system from the first viewpoint supports the design of air conditioners in buildings including multiple rooms.
  • the design support system includes a volume acquisition unit, a heat load acquisition unit, an air conditioner determination unit, an encapsulation amount acquisition unit, a refrigerant filling rate acquisition unit, a comparison unit, and a determination unit.
  • the volume acquisition unit acquires the volume of the space in which the refrigerant stays when the refrigerant leaks into the room from the floor area of each room and the leakage height of the air conditioner installed in each room.
  • the heat load acquisition unit acquires the heat load of each room.
  • the air conditioner determination unit determines an air conditioner capable of processing the heat load based on the heat load.
  • the filling amount acquisition unit acquires the filling amount of the refrigerant to be filled in the air conditioner.
  • the refrigerant filling rate acquisition unit acquires the refrigerant filling rate, which is the amount of refrigerant per unit volume of each room at the time of refrigerant leakage, based on the volume and the filling amount.
  • the comparison unit compares the refrigerant filling rate of each room and the threshold value based on the volume of each room.
  • the determination unit determines the number of rooms in which the refrigerant filling rate is larger than the threshold value, based on the result of comparison in the comparison unit.
  • the design support system is a system related to the first viewpoint, and further includes a presentation screen generation unit.
  • the presentation screen generation unit generates a screen that presents the number of rooms in which the refrigerant filling rate is larger than the threshold value as a result of the determination by the determination unit.
  • the design support system according to the third viewpoint is a system according to the first viewpoint or the second viewpoint, and the air conditioner includes a plurality of indoor units and outdoor units.
  • the air conditioner determination unit determines an air conditioner capable of processing a heat load based on the capacity of the indoor unit and the capacity of the outdoor unit.
  • the design support system is the system according to the third aspect, and the encapsulation amount acquisition unit further air-conditions based on the information of the length of the connecting pipe connecting the indoor unit and the outdoor unit. Acquire the filling amount of the refrigerant to be filled in the machine.
  • the design support system according to the fifth viewpoint is a system according to any one of the first to fourth viewpoints, and the volume acquisition unit calculates and acquires the volume of each room based on the drawing of the building. ..
  • the design support system according to the sixth aspect is a system according to any one of the first to fifth aspects, and the presentation screen generator is provided in the shutoff valve provided in the air conditioner and / or in the room.
  • the ventilation system to be used is presented in a selectable manner.
  • the design support system is the system according to the sixth aspect, and when the ventilation device is selected in the presentation screen generation unit, the air conditioner determination unit further determines the air conditioner based on the capacity of the ventilation device. To determine.
  • the design support system according to the eighth viewpoint is a system according to any one of the first to seventh viewpoints, and when there is no room in which the refrigerant filling rate is larger than the threshold value as a result of comparison in the comparison unit,
  • the presentation screen generation unit presents information that there is no room in which the refrigerant filling rate is larger than the threshold value.
  • the design support system according to the ninth viewpoint is a system according to any one of the first to eighth viewpoints, and the presentation screen generation unit is further provided in the room based on the comparison result in the comparison unit. Generate a number of alarm devices to notify you of refrigerant leaks.
  • the design support program related to the tenth viewpoint is a program that functions in a design support system that supports the design of an air conditioner in a building including a plurality of rooms.
  • the design support program includes a volume acquisition step, a heat load acquisition step, an air conditioner determination step, an encapsulation amount acquisition step, a refrigerant filling rate acquisition step, a comparison step, and a determination step.
  • the volume acquisition step acquires the volume of the space in which the refrigerant stays when the refrigerant leaks into the room from the floor area of each room and the leakage height of the air conditioner installed in each room.
  • the heat load acquisition step acquires the heat load of each room.
  • the air conditioner determination step determines an air conditioner capable of processing the heat load based on the heat load.
  • the filling amount acquisition step acquires the filling amount of the refrigerant to be filled in the air conditioner based on the air conditioner determined by the air conditioner determination step.
  • the refrigerant filling rate acquisition step acquires the refrigerant filling rate, which is the amount of refrigerant per unit volume of each room at the time of refrigerant leakage, based on the volume and the filling amount.
  • the comparison step compares the refrigerant filling rate of each room and the threshold value based on the volume of each room.
  • the determination step determines the number of rooms in which the refrigerant filling rate is larger than the threshold value, based on the result of the comparison in the comparison step.
  • the design support method supports the design of an air conditioner in a building including a plurality of rooms.
  • the design support method includes a volume acquisition step, a heat load acquisition step, an air conditioner determination step, an encapsulation amount acquisition step, a refrigerant filling rate acquisition step, a comparison step, and a determination step.
  • the volume acquisition step acquires the volume of the space in which the refrigerant stays when the refrigerant leaks into the room from the floor area of each room and the leakage height of the air conditioner installed in each room.
  • the heat load acquisition step acquires the heat load of each room.
  • the air conditioner determination step determines an air conditioner capable of processing the heat load based on the heat load.
  • the filling amount acquisition step acquires the filling amount of the refrigerant to be filled in the air conditioner based on the air conditioner determined by the air conditioner determination step.
  • the refrigerant filling rate acquisition step acquires the refrigerant filling rate, which is the amount of refrigerant per unit volume of each room at the time of refrigerant leakage, based on the volume and the filling amount.
  • the comparison step compares the refrigerant filling rate of each room and the threshold value based on the volume of each room.
  • the determination step determines the number of rooms in which the refrigerant filling rate is larger than the threshold value, based on the result of the comparison in the comparison step. This makes it possible for the design support method to determine the necessity of safety measures at the stage of designing the air conditioner.
  • FIG. 1 shows an example of designing the air conditioner 10 in the building 2 using the design support system 1 according to the present disclosure.
  • the air conditioner 10 shown in FIG. 1 is the air conditioner 10 determined by the design support device 20, and is shown in a state of being installed in the building 2 for convenience of explanation.
  • the design support device 20 is installed, for example, in the central management center 3 or the center office of the building 2.
  • Building 2 is, for example, an office building, a commercial building, or a condominium.
  • Air conditioner 10 is a device for cooling and heating a plurality of rooms ⁇ ( ⁇ 1 to ⁇ 3) provided in the building 2, and the outdoor unit 11 and the plurality of indoor units 12 are connected to each other. It is composed of things.
  • FIG. 1 shows an example in which a ceiling-embedded indoor unit is installed as the indoor unit 12.
  • the refrigerant circuit is configured by connecting the outdoor unit 11 and the indoor unit 12 via a connecting pipe 13.
  • the refrigerant circuit is filled with a slightly flammable refrigerant such as R32 or a highly flammable refrigerant such as R290 as the refrigerant.
  • the air conditioner 10 has control units 11x and 12x that control equipment and the like that constitute the refrigerant circuit of the air conditioner 10.
  • the control units 11x and 12x are formed by connecting the outdoor control unit 11x that controls the equipment that constitutes the outdoor unit 11 and the indoor control unit 12x that controls the equipment that constitutes the indoor unit 12 via a transmission line. It is configured.
  • the outdoor control unit 11x is provided in the outdoor unit 11.
  • the outdoor control unit 11x is composed of a CPU, a memory, a communication interface, and the like (not shown).
  • the indoor control unit 12x is provided in the indoor unit 12, and when a remote controller is provided corresponding to the indoor unit 12, the remote controller is also included in the indoor control unit 12x.
  • the indoor control unit 12x is composed of a CPU, a memory, a communication interface, and the like (not shown).
  • a transmission format in which the control units 11x and 12x are connected via a transmission line is adopted, but the present invention is not limited to this, and other transmission formats such as wireless connection may be used. good.
  • the threshold value is based on the LFL (Lower Flammability Limit), which is the minimum concentration of the refrigerant capable of propagating the flame in a state where the refrigerant and air are uniformly mixed, and is a quarter of the LFL. If it exceeds, it is said that safety measures are required.
  • LFL Lower Flammability Limit
  • the LFL is 0.307 and the threshold is 0.07675.
  • the threshold value according to the type of the refrigerant is stored in advance in the storage unit 21 of the design support device 20 as information used in the design support program described later.
  • the refrigerant circuit of the air conditioner 10 is filled with a slightly flammable or highly flammable refrigerant, but if the refrigerant filling rate (described later) does not exceed the threshold value, even if the refrigerant leaks. Since the concentration of the refrigerant in each room ⁇ does not reach the limit concentration, there is no possibility of an ignition accident or the like. On the contrary, when the refrigerant filling rate exceeds the threshold value, if the refrigerant leaks, the concentration of the refrigerant in the room ⁇ may reach the limit concentration, which may cause an ignition accident or the like.
  • the safety measure is to prevent the refrigerant filling rate from exceeding the threshold value by installing a safety device such as a ventilation device or a shutoff valve, for example.
  • the safety measure is to provide an alarm device for notifying the leakage of the refrigerant in case the refrigerant leaks.
  • the design support device 20 supports the design work for constructing the air conditioner 10 and the safety measure device in the building 2 by using the design support program.
  • the design support device 20 is, for example, a server device, a personal computer, a tablet terminal, or the like.
  • the design support device 20 includes a storage unit 21, a communication unit 22, an input unit 23, a processing unit 24, and a presentation unit 25.
  • the storage unit 21 stores various types of information, and is composed of a non-volatile memory and / or a volatile memory and the like.
  • the storage unit 21 stores programs for executing various functions of the design support device 20.
  • the program includes a design support program to support the design work.
  • the storage unit 21 stores information used for the design support program.
  • the information and the table used in the design support program include information acquired via the communication unit 22 or the input unit 23, or information calculated / acquired by the processing unit 24.
  • Various information stored in the storage unit 21 can be updated as appropriate.
  • the communication unit 22 is a communication interface for communicating with an external network.
  • the design support device 20 can send and receive information to and from the air conditioner 10 and an external device via the communication unit 22.
  • the input unit 23 enables input of information to the design support device 20, and is realized by a keyboard, a mouse, and / or a touch screen or the like.
  • the information input from the input unit 23 is stored in an appropriate storage area in the storage unit 21.
  • the type of refrigerant to be sealed in the air conditioner 10 can be input from the input unit 23.
  • the type of safety device to be installed in the room ⁇ can be input from the input unit 23.
  • the processing unit 24 executes various information processing in the design support device 20, and is composed of a CPU, a cache memory, and the like.
  • the processing unit 24 includes a volume calculation unit 24a (volume acquisition unit), a heat load calculation unit 24b (heat load acquisition unit), an air conditioner determination unit 24c, a communication pipe determination unit 24d, and an encapsulation amount calculation unit 24e (encapsulation amount). It also functions as an acquisition unit), a refrigerant filling rate calculation unit 24f (refrigerant filling rate acquisition unit), a comparison unit 24g, a determination unit 24h, a shutoff valve determination unit 24i, a ventilation device determination unit 24j, and a presentation screen generation unit 24k.
  • volume calculation unit 24a In the volume calculation unit 24a, the refrigerant is supplied to the room ⁇ from the floor area S of each room ⁇ and the leakage height H of the indoor unit 12 (air conditioner 10) installed in each of the rooms ⁇ , which are stored in the storage unit 21 in advance. When a leak occurs, the volume of the space in which the refrigerant stays is calculated and acquired. Information on the floor area S and the leakage height H is acquired in advance via the communication unit 22 or the input unit 23 and stored in the storage unit 21.
  • the floor area S is, for example, the value of S shown in FIG. 3, and the leakage height is the value of H.
  • the leakage height H is defined as the leakage height specified in the guidelines of JRA GL-16 of the Japan Racing Association.
  • the leakage height H is the height from the floor surface to the assumed refrigerant leakage point, and is the joint between the installation height of the indoor unit and the indoor piping (brazing). It means the lowest height (excluding the part).
  • the installation height of the indoor unit means the height from the floor surface to the lower end of the air outlet of the indoor unit.
  • FIG. 3 shows an example in which a ceiling-embedded indoor unit is installed as the indoor unit 12.
  • the leakage height H is the height from the floor to the ceiling.
  • the leakage height H is the height from the floor surface to the lower end of the air outlet of the indoor unit. This height is approximately equal to the height from the floor surface to the lower end of the housing of the wall-mounted indoor unit.
  • the leakage height indicated by the above-mentioned GL-16 guideline is used.
  • the volume of each space of the room ⁇ calculated by the volume calculation unit 24a is stored in an appropriate storage area of the storage unit 21.
  • Heat load calculation unit 24b calculates and acquires the heat load of each room ⁇ based on the information about the building 2, the weather conditions, the default value for each use of each room ⁇ , etc. stored in the storage unit 21 in advance. do.
  • the information about the building 2 includes the property identification information, the city where the building 2 is located or the representative city in the suburbs of the building 2, the frequency band used, the floor area of the building 2, the reference floor area, the number of floors of the building 2.
  • the meteorological condition is the meteorological condition of the city where the building 2 is located or the representative city in the suburbs of the building 2, and is information on the hourly average temperature and solar radiation conditions of the city in summer and winter.
  • the default values for each use of room ⁇ are information on the operating time of each use of room ⁇ , air-conditioning design conditions, lighting load, human body load, equipment heat generation, amount of heat generated by room ⁇ such as ventilation, etc. Is.
  • Information about the building 2, weather conditions, default values for each use of each room ⁇ , etc. are acquired in advance via the communication unit 22 or the input unit 23 and stored in the storage unit 21.
  • the heat load of each room ⁇ calculated by the heat load calculation unit 24b is stored in an appropriate storage area of the storage unit 21.
  • the air-conditioner determination unit 24c can process the heat load based on the heat load of each room ⁇ calculated by the heat load calculation unit 24b and stored in the storage unit 21.
  • the capacity of the air conditioner 10 is calculated, and the air conditioner 10 is determined.
  • the air conditioner determination unit 24c first calculates the capacity (horsepower and number of horsepower) of the indoor unit 12 required for each room ⁇ based on the heat load of each room ⁇ by the air conditioner determination unit 24c.
  • the required capacity (horsepower and number of units) of the outdoor unit 11 is calculated based on the total value of the heat load of each room ⁇ , the outside air temperature, and the like.
  • the calculated total capacity of the indoor unit 12 and the capacity of the outdoor unit 11 are compared, and the smaller capacity is determined as the capacity of the air conditioner 10.
  • the air conditioner determination unit 24c determines the indoor unit 12 and the outdoor unit 11 (air conditioner 10) to be installed in each of the rooms ⁇ based on the capacity of the air conditioner 10.
  • the information related to the air conditioner 10 determined by the air conditioner determination unit 24c is stored in an appropriate storage area of the storage unit 21.
  • the communication pipe determination unit 24d is based on the information regarding the air conditioner 10 determined by the air conditioner determination unit 24c and stored in the storage unit 21 and the information regarding the building 2. , The pipe diameter and the pipe length of the connecting pipe 13 connecting the indoor unit 12 and the outdoor unit 11 installed in each of the rooms ⁇ are determined. Information related to the pipe diameter and the pipe length of the connecting pipe 13 determined by the connecting pipe determining unit 24d is stored in an appropriate storage area of the storage unit 21.
  • Encapsulation amount calculation unit (encapsulation amount acquisition unit)
  • the encapsulation amount calculation unit 24e contains information about the air conditioner 10 determined by the air conditioner determination unit 24c and stored in the storage unit 21, and the pipe diameter of the communication pipe 13 determined by the communication pipe determination unit 24d and stored in the storage unit 21. Based on the information about the pipe length and the pipe length, the amount K of the refrigerant to be sealed in the air conditioner 10 is calculated and acquired.
  • the refrigerant encapsulation amount K acquired by the encapsulation amount calculation unit 24e is stored in an appropriate storage area of the storage unit 21.
  • the refrigerant filling rate calculation unit 24f includes the volume of each space of the room ⁇ calculated by the volume calculation unit 24a and stored in the storage unit 21, and the amount of the refrigerant filled in the storage unit 21 calculated by the filling amount calculation unit 24e. Based on K, the amount of refrigerant (refrigerant filling rate) per unit volume of each room ⁇ at the time of refrigerant leakage is calculated and acquired. Specifically, the refrigerant filling rate calculation unit 24f calculates the refrigerant filling rate using the equation (1).
  • K is the amount of the refrigerant sealed in the air conditioner 10 K (Kg)
  • H is the leakage height H (m) of the air conditioner 10
  • S is the floor area S (m) of each room ⁇ . 2 ).
  • Comparison unit 24g compares the refrigerant filling rate of each room ⁇ calculated by the refrigerant filling rate calculation unit 24f with the threshold value.
  • the determination unit 24h causes the determination unit 24h to determine the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value.
  • information indicating that there is no room ⁇ having a refrigerant filling rate larger than the threshold value is stored in an appropriate storage area of the storage unit 21.
  • the determination unit 24h determines (specifies) the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value, based on the result of comparison by the comparison unit 24g.
  • Information on the number of rooms ⁇ whose refrigerant filling rate determined by the determination unit 24h is larger than the threshold value is stored in an appropriate storage area of the storage unit 21.
  • the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value is, in other words, the number of rooms requiring safety measures. It can also be said that the number of rooms requires a safety device such as a ventilation device or a shutoff valve. It can also be said to be the number of alarm devices that need to be installed.
  • the shutoff valve determination unit 24i determines the number of shutoff valves required for each room ⁇ based on the results of comparison by the comparison unit 24g.
  • the shutoff valve includes a liquid side shutoff valve and a gas side shutoff valve, and the shutoff valve determining unit 24i determines the quantity of each.
  • the number of shutoff valves calculated by the shutoff valve determination unit 24i is stored in an appropriate storage area of the storage unit 21. Further, the shutoff valve determination unit 24i determines the quantity and diameter of the liquid side shutoff valve and the quantity and diameter of the gas side shutoff valve based on the capacity (horsepower and number of units) of the indoor unit 12 determined by the air conditioner determination unit 24c. Each may be decided.
  • Ventilation device determination unit 24j determines the volume of each space of the room ⁇ calculated by the volume calculation unit 24a and stored in the storage unit 21, and the ventilation frequency of each room ⁇ . Based on this, the air volume required for each room ⁇ is calculated and the ventilation device is determined. The information related to the ventilation device determined by the ventilation device determination unit 24j is stored in an appropriate storage area of the storage unit 21. If the ventilation device is installed in the room ⁇ in advance, the ventilation device is determined by calculating the air volume obtained by subtracting the air volume of the ventilation device from the required air volume in advance.
  • the ventilation device determination unit 24j does not use the volume of each space of the room ⁇ stored in the storage unit 21, but the volume of the room ⁇ based on the floor area S of the room ⁇ and the height from the floor surface to the ceiling. May be calculated, and the air volume required for each room ⁇ may be calculated to determine the ventilation device.
  • Presentation screen generation unit 24k generates a presentation screen for presentation to the presentation unit 25 based on the information stored in the storage unit 21.
  • the presentation screen generation unit 24k presents the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value based on the result of comparison by the comparison unit 24g (FIG. 4B), or the refrigerant filling rate is greater than the threshold value.
  • the presentation screen generation unit 24k generates a screen for presenting a selection command capable of selecting a shutoff valve or a ventilation device as a safety device.
  • These presentation screens include information generated based on the result of comparison by the comparison unit 24g, which is referred to by the user of the design support device 20 for inputting via the input unit 23. May be good.
  • the presentation screen generation unit 24k provides information on the number of alarm devices that notify the refrigerant leakage that needs to be installed in the room ⁇ , or information that the alarm device is unnecessary, based on the result of comparison by the comparison unit 24g. Generate a presentation screen to present.
  • the presentation unit 25 outputs various information, and is composed of various displays, speakers, and the like.
  • the presentation unit 25 presents the presentation screen generated by the presentation screen generation unit 24k.
  • the user of the design support device 20 can input necessary information from the input unit 23 with reference to the presentation screen.
  • Design Method of Air Conditioner and Safety Device in Design Support System The design method of the air conditioner 10 and safety device in the building 2 including a plurality of rooms ⁇ in the design support system 1 will be described below.
  • 5 and 6 are flowcharts showing the processing of the design support system 1. This design method is realized based on the design support program executed in the design support system 1.
  • the storage unit 21 of the design support device 20 stores various information used in the design support program in advance.
  • the volume calculation unit 24a of the processing unit 24 changes from the floor area S of each room ⁇ and the leakage height H of the indoor unit 12 (air conditioner 10) installed in each room ⁇ to the room ⁇ .
  • the respective volumes of the space in which the refrigerant stays are calculated and acquired (volume acquisition step ST1).
  • the volume of each space of the room ⁇ calculated by the volume calculation unit 24a is stored in an appropriate storage area of the storage unit 21.
  • the volume of the space in the room ⁇ 1 is 55 m 3 .
  • the heat load calculation unit 24b of the processing unit 24 calculates and acquires the heat load based on the information about the building 2, the weather conditions, the default value for each use of each room ⁇ , and the like (heat load acquisition step ST2). ..
  • the heat load of each room ⁇ calculated by the heat load calculation unit 24b is stored in an appropriate storage area of the storage unit 21.
  • the air conditioner determination unit 24c of the processing unit 24 determines the air conditioner 10 based on the heat load of each room ⁇ acquired in the heat load acquisition step ST2 (air conditioner determination step ST3).
  • the information related to the air conditioner 10 determined by the air conditioner determination unit 24c is stored in an appropriate storage area of the storage unit 21.
  • the air conditioner determination unit 24c first calculates the capacity (horsepower and number of units) of the indoor unit 12 required for each room ⁇ based on the heat load of each room ⁇ . do. Next, the required capacity (horsepower and number of units) of the outdoor unit 11 is calculated based on the total value of the heat load of each room ⁇ , the outside air temperature, and the like. The total capacity of the indoor unit 12 calculated and the capacity of the outdoor unit 11 are compared, and the smaller capacity is determined as the capacity of the air conditioner 10. Finally, the air conditioner determination unit 24c determines the indoor unit 12 and the outdoor unit 11 (air conditioner 10) to be installed in each of the rooms ⁇ based on the capacity of the air conditioner 10.
  • the communication piping determination unit 24d of the processing unit 24 installs the indoor unit 12 and the outdoor unit in each of the rooms ⁇ based on the information regarding the air conditioner 10 acquired in the air conditioner determination step ST3 and the information regarding the building 2.
  • the pipe diameter and the pipe length of the connecting pipe 13 connecting the 11 are determined (communication pipe determination step ST4).
  • Information related to the pipe diameter and the pipe length of the connecting pipe 13 determined by the connecting pipe determining unit 24d is stored in an appropriate storage area of the storage unit 21.
  • the encapsulation amount calculation unit 24e of the processing unit 24 has information on the air conditioner 10 acquired in the air conditioner determination step ST3 and information on the pipe diameter and the pipe length of the communication pipe 13 acquired in the communication pipe determination step ST4. Based on the above, the amount K of the refrigerant to be sealed in the air conditioner 10 is calculated and acquired (filling amount acquisition step ST5).
  • the information related to the filling amount K of the refrigerant to be sealed in the air conditioner 10 acquired by the filling amount calculation unit 24e is stored in an appropriate storage area of the storage unit 21.
  • the refrigerant filling rate calculation unit 24f of the processing unit 24 has the volume of each space of the room ⁇ acquired in the volume acquisition step ST1 and the amount of the refrigerant sealed in the air conditioner 10 acquired in the encapsulation amount acquisition step ST5. Based on the above, the refrigerant filling rate, which is the amount of refrigerant per unit volume of each room ⁇ at the time of refrigerant leakage, is calculated and acquired (refrigerant filling rate acquisition step ST6).
  • the information related to the refrigerant filling rate acquired by the refrigerant filling rate calculation unit 24f is stored in an appropriate storage area of the storage unit 21.
  • the refrigerant filling rate applied to the equation (1) is calculated to be 0.5455 (Kg / m 3).
  • the refrigerant sealed in the air conditioner 10 is R32
  • the threshold value of 0.07675 and the refrigerant filling rate are compared, it can be seen that the refrigerant filling rate is larger than the threshold value.
  • the comparison unit 24g of the processing unit 24 compares the refrigerant filling rate acquired in the refrigerant filling rate acquisition step ST6 and the threshold value stored in the storage unit 21 (comparison step ST7). As a result of comparing the refrigerant filling rate and the threshold value of each of the rooms ⁇ , the comparison unit 24g does not have a room ⁇ having a refrigerant filling rate larger than the threshold value (NO). Information to that effect is stored in an appropriate storage area of the storage unit 21 (comparison result storage step ST8).
  • the presentation screen generation unit 24k of the processing unit 24 generates a presentation screen that presents that there is no room ⁇ in which the refrigerant filling rate is larger than the threshold value (presentation screen generation step ST9).
  • the presentation screen generated here is, for example, the presentation screen shown in FIG. 4A.
  • the presentation unit 25 presents the presentation screen generated in the presentation screen generation step ST9 to the user of the design support device 20 (presentation step ST10).
  • the determination unit 24h is made to determine the number of rooms ⁇ having a refrigerant filling rate larger than the threshold value (determination step). ST11). Information on the number of rooms ⁇ whose refrigerant filling rate determined by the determination unit 24h is larger than the threshold value is stored in an appropriate storage area of the storage unit 21 (determination result storage step ST12).
  • the presentation screen generation unit 24k of the processing unit 24 generates a presentation screen that presents the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value (presentation screen generation step ST13). Further, in the presentation screen generation step ST12, the presentation screen generation unit 24k of the processing unit 24 generates a screen for presenting a selection command capable of selecting a shutoff valve or a ventilation device as a safety device.
  • the presentation unit 25 presents the presentation screen generated in the presentation screen generation step ST13 to the user of the design support device 20 (presentation step ST14).
  • the presentation screen is, for example, the presentation screen shown in FIG. 4B, and is provided with a selection command for selecting a shutoff valve or a ventilation device as a safety device.
  • the user refers to the presentation screen presented in the presentation step ST14, and inputs information related to the safety device via the input unit 23 (input step ST15).
  • shutoff valve determination unit 24i of the processing unit 24 determines the shutoff valve required for each of the rooms ⁇ based on the comparison result in the comparison step ST7. The quantity is determined (shutoff valve determination step ST16).
  • the presentation screen generation unit 24k generates a presentation screen that presents information related to the number of shutoff valves required for each of the rooms ⁇ determined in the shutoff valve determination step ST16 (presentation screen generation step ST17).
  • the presentation unit 25 presents the presentation screen generated in the presentation screen generation step ST17 to the user of the design support device 20 (presentation step ST18).
  • the ventilation device determination unit 24j of the processing unit 24 determines the volume of each space of the room ⁇ acquired in the volume acquisition step ST1.
  • the air volume required for each room ⁇ is calculated based on the ventilation frequency of each room ⁇ , and the ventilation device is determined (ventilation device determination step ST19).
  • the ventilation device is determined by subtracting the air volume of the existing ventilation device from the required air volume.
  • the process returns to the heat load acquisition step ST2 in step ST20, and the air conditioner 10 and the safety device are determined again (ST2-ST19).
  • the presentation screen generation unit 24k generates a presentation screen for presenting information related to the ventilation device determined in the ventilation device determination step ST19 (presentation screen generation step ST21).
  • the presentation unit 25 presents the presentation screen generated in the presentation screen generation step ST21 to the user of the design support device 20 (presentation step ST22).
  • the design support system 1 of the present disclosure supports the design of the air conditioner 10 in the building 2 including a plurality of rooms ⁇ .
  • the air conditioner 10 includes a plurality of indoor units 12 and outdoor units 11.
  • the design support system 1 includes a volume calculation unit 24a as a volume acquisition unit, a heat load calculation unit 24b as a heat load acquisition unit, an air conditioner determination unit 24c, and an encapsulation amount calculation unit 24e as an encapsulation amount acquisition unit. It includes a refrigerant filling rate calculation unit 24f as a refrigerant filling rate acquisition unit, a comparison unit 24g, a determination unit 24h, and a presentation screen generation unit 24k.
  • the volume calculation unit 24a is the volume of the space in which the refrigerant stays when the refrigerant leaks into the room ⁇ from the floor area S of each room ⁇ and the leakage height H of the air conditioner 10 installed in each of the rooms ⁇ .
  • the heat load calculation unit 24b acquires the heat load of each room ⁇ .
  • the air conditioner determination unit 24c determines the air conditioner 10 capable of processing the heat load based on the heat load.
  • the air conditioner determination unit 24c determines the air conditioner 10 capable of processing the heat load based on the capacity of the indoor unit 12 and the capacity of the outdoor unit 11.
  • the filling amount calculation unit 24e acquires the filling amount K of the refrigerant to be filled in the air conditioner 10.
  • the filling amount calculation unit 24e further acquires the filling amount K of the refrigerant to be filled in the air conditioner 10 based on the information of the pipe diameter and the pipe length of the connecting pipe 13 connecting the indoor unit 12 and the outdoor unit 11.
  • the refrigerant filling rate calculation unit 24f acquires the refrigerant filling rate of each room ⁇ at the time of refrigerant leakage based on the volume of the space and the filling amount K.
  • the comparison unit 24g compares the refrigerant filling rate of each room ⁇ and the threshold value based on the volume of each room ⁇ .
  • the determination unit 24h determines the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value, based on the result of comparison in the comparison unit 24g.
  • the presentation screen generation unit 24k presents information that there is no room ⁇ having a refrigerant filling rate larger than the threshold value when there is no room ⁇ having a refrigerant filling rate larger than the threshold value.
  • the presentation screen generation unit 24k further presents the number of alarm devices that notify the refrigerant leakage that needs to be installed in the room ⁇ , based on the result of the comparison in the comparison unit 24g.
  • a threshold value based on the volume of each room according to the type of refrigerant (for example, a threshold value based on LFL) is provided.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2016-173224
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2016-173224
  • the necessity of safety measures is judged at the stage of designing an air conditioner in a building.
  • the design support system 1 shown in the present disclosure can determine the necessity of safety measures at the stage of designing the air conditioner 10. Thereby, a necessary and sufficient amount of safety measure device or safety measure function can be provided.
  • the presentation screen generation unit 24k of the design support system 1 presents the comparison result in the comparison unit 24g
  • the user of the design support device 20 (design support system 1) is created and presented by the presentation screen generation unit 24k.
  • the number of safety measures devices the number of rooms ⁇ in which the amount of refrigerant leakage is larger than the threshold value, or the fact that there is no room ⁇ in which the amount of refrigerant leakage is larger than the threshold value
  • the presentation screen generation unit 24k generates a screen for presenting a selection command capable of selecting a shutoff valve provided in the air conditioner 10 and / or a ventilation device provided in the room ⁇ .
  • the air conditioner determination unit 24c further determines the air conditioner 10 based on the capacity of the ventilator.
  • the user of the design support device 20 (design support system 1) can select the type of the safety device by referring to the information generated by the presentation screen generation unit 24k and presented to the presentation unit 25. be.
  • design support device 20 (design support system 1) can perform the processing in the design support system 1 again in consideration of the ventilation volume of the ventilation device.
  • the design support program according to the present disclosure is a program that functions in the design support system 1 that supports the design of the air conditioner 10 in the building 2 including the plurality of rooms ⁇ .
  • the design support program includes volume acquisition step ST1, heat load acquisition step ST2, air conditioner determination step ST3, filling amount acquisition step ST5, refrigerant filling rate acquisition step ST6, comparison step ST7, and determination step ST11.
  • volume acquisition step ST1 the floor area S of each room ⁇ and the leakage height H of the air conditioner 10 installed in each room ⁇ are used to determine the volume of the space in which the refrigerant stays when the refrigerant leaks into the room ⁇ . get.
  • the heat load acquisition step ST2 acquires the heat load of each room ⁇ .
  • the air conditioner determination step ST3 determines the air conditioner 10 capable of processing the heat load based on the heat load.
  • the filling amount acquisition step ST5 acquires the filling amount K of the refrigerant to be filled in the air conditioner 10 based on the air conditioner 10 determined in the air conditioner determination step ST3.
  • the refrigerant filling rate acquisition step ST6 acquires the refrigerant filling rate, which is the amount of refrigerant per unit volume of each room ⁇ at the time of refrigerant leakage, based on the volume and the filling amount K.
  • the comparison step ST7 compares the refrigerant filling rate of each room ⁇ and the threshold value based on the volume of each room ⁇ .
  • the determination step ST11 determines the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value, based on the result of the comparison in the comparison step ST7.
  • the user who uses the design support program shown in the present disclosure can determine the necessity of safety measures at the stage of designing the air conditioner 10. Thereby, a necessary and sufficient amount of safety measure device or safety measure function can be provided.
  • the design support method supports the design of the air conditioner 10 in the building 2 including a plurality of rooms ⁇ .
  • the design support method includes volume acquisition step ST1, heat load acquisition step ST2, air conditioner determination step ST3, filling amount acquisition step ST5, refrigerant filling rate acquisition step ST6, comparison step ST7, and determination step ST11.
  • the volume acquisition step ST1 acquires the volume of the space that stays when the refrigerant leaks into the room ⁇ from the floor area S of each room ⁇ and the leakage height H of the air conditioner 10 installed in each of the rooms ⁇ .
  • the heat load acquisition step ST2 acquires the heat load of each room ⁇ .
  • the air conditioner determination step ST3 determines the air conditioner 10 capable of processing the heat load based on the heat load.
  • the filling amount acquisition step ST5 acquires the filling amount K of the refrigerant to be filled in the air conditioner 10 based on the air conditioner 10 determined in the air conditioner determination step ST3.
  • the refrigerant filling rate acquisition step ST6 acquires the refrigerant filling rate, which is the amount of refrigerant per unit volume of each room ⁇ at the time of refrigerant leakage, based on the volume and the filling amount K.
  • the comparison step ST7 compares the refrigerant filling rate of each room ⁇ and the threshold value based on the volume of each room ⁇ .
  • the determination step ST11 determines the number of rooms ⁇ in which the refrigerant filling rate is larger than the threshold value, based on the result of the comparison in the comparison step ST7.
  • a user who uses the design support method shown in the present disclosure can determine the necessity of safety measures at the stage of designing the air conditioner 10. Thereby, a necessary and sufficient amount of safety measure device or safety measure function can be provided.
  • the volume calculation unit 24a of the design support system 1 may calculate and acquire the volume of each room ⁇ based on the drawing of the building 2. Specifically, based on the drawing input from the input unit 23 such as a scanner or the drawing received from the communication unit 22, the floor area S of each room ⁇ and the indoor unit 12 installed in each room ⁇ When the refrigerant leaks from the leakage height H of the (air conditioner 10) to the room ⁇ , the respective volumes of the space in which the refrigerant stays may be calculated.

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Abstract

La présente invention concerne un système d'aide à la conception (1) qui est pourvu de : une unité d'acquisition de volume (24a) qui, sur la base des zones de sol respectives (S) de pièces (α) et des hauteurs de fuite (H) de climatiseurs (10) respectivement installés dans les pièces (α), acquiert le volume de l'espace dans lequel un liquide de refroidissement est retenu lorsque le liquide de refroidissement a fui dans une pièce (α); une unité d'acquisition de charge thermique (24b) qui acquiert la charge thermique de chaque pièce (α); une unité de détermination de climatiseur (24c) qui, sur la base des charges thermiques, détermine un climatiseur (10) en mesure de traiter une charge thermique; une unité d'acquisition de quantité scellée (24e) qui acquiert la quantité scellée (K) de liquide de refroidissement chargée dans les climatiseurs (10); une unité d'acquisition de débit de remplissage de liquide de refroidissement (24f) qui acquiert le débit de remplissage de liquide de refroidissement de chaque pièce (α) pendant une fuite de liquide de refroidissement, sur la base des volumes et des quantités scellées (K); une unité de comparaison (24g) qui compare les débits de remplissage de liquide de refroidissement respectifs des pièces (α) avec des valeurs de seuil sur la base des volumes respectifs des pièces (α); et une unité de détermination (24h) qui détermine, sur la base des résultats de la comparaison par l'unité de comparaison (24g), le nombre de pièces (α) dans lesquelles le débit de remplissage de liquide de refroidissement dépasse la valeur de seuil.
PCT/JP2021/005507 2020-02-20 2021-02-15 Système d'aide à la conception, programme d'aide à la conception et procédé d'aide à la conception WO2021166846A1 (fr)

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WO2024134890A1 (fr) * 2022-12-23 2024-06-27 三菱電機株式会社 Système de climatisation et son procédé de commande, et programme

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018186175A1 (fr) * 2017-04-04 2018-10-11 ダイキン工業株式会社 Système de sélection de climatiseur
JP2019132530A (ja) * 2018-01-31 2019-08-08 ダイキン工業株式会社 空調機器選定システム
WO2019171520A1 (fr) * 2018-03-08 2019-09-12 日立ジョンソンコントロールズ空調株式会社 Dispositif d'aide à la conception de climatiseur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018186175A1 (fr) * 2017-04-04 2018-10-11 ダイキン工業株式会社 Système de sélection de climatiseur
JP2019132530A (ja) * 2018-01-31 2019-08-08 ダイキン工業株式会社 空調機器選定システム
WO2019171520A1 (fr) * 2018-03-08 2019-09-12 日立ジョンソンコントロールズ空調株式会社 Dispositif d'aide à la conception de climatiseur

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