WO2024070491A1 - Unité intérieure pour système de climatisation, système de climatisation, dispositif de commande, procédé de commande d'unité intérieure pour système de climatisation et programme - Google Patents

Unité intérieure pour système de climatisation, système de climatisation, dispositif de commande, procédé de commande d'unité intérieure pour système de climatisation et programme Download PDF

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Publication number
WO2024070491A1
WO2024070491A1 PCT/JP2023/031967 JP2023031967W WO2024070491A1 WO 2024070491 A1 WO2024070491 A1 WO 2024070491A1 JP 2023031967 W JP2023031967 W JP 2023031967W WO 2024070491 A1 WO2024070491 A1 WO 2024070491A1
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WIPO (PCT)
Prior art keywords
room
unit
air conditioning
conditioning system
temperature
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PCT/JP2023/031967
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English (en)
Japanese (ja)
Inventor
裕人 高橋
裕志 神原
雅司 ▲高▼野
智充 山口
Original Assignee
三菱重工サーマルシステムズ株式会社
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Application filed by 三菱重工サーマルシステムズ株式会社 filed Critical 三菱重工サーマルシステムズ株式会社
Publication of WO2024070491A1 publication Critical patent/WO2024070491A1/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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide

Definitions

  • the present disclosure relates to an indoor unit of an air conditioning system, an air conditioning system, a control device, and a control method and program for an indoor unit of an air conditioning system.
  • Patent Literature 1 discloses an air conditioning system equipped with a gas sensor that detects the degree of pollution of indoor air. It is conceivable that such a gas sensor is used to detect the carbon dioxide concentration in a room, and when an increase in the carbon dioxide concentration in the room is detected, ventilation of the room is attempted.
  • Patent Document 1 the air conditioning system described in Patent Document 1 must be equipped with a gas sensor to detect the carbon dioxide concentration, which leads to problems such as a complex structure and increased costs.
  • the present disclosure has been made to solve the above problems, and aims to provide an indoor unit of an air conditioning system, an air conditioning system, a control device, and a control method and program for an indoor unit of an air conditioning system that is capable of detecting an increase in the concentration of carbon dioxide in a room that accompanies the use of another combustion-type heater with a simple configuration.
  • the indoor unit of the air conditioning system is an indoor unit of an air conditioning system, and is equipped with a temperature sensor that detects the temperature inside the room, a relative humidity sensor that detects the relative humidity inside the room, and a control device, and the control device is equipped with an information acquisition unit that acquires the temperature detected by the temperature sensor and the relative humidity detected by the relative humidity sensor, an operation control unit that controls the operation of the indoor unit based on the acquired temperature and relative humidity, and a monitoring unit that acquires the absolute humidity inside the room based on the temperature and relative humidity during heating operation of the indoor unit, and monitors the carbon dioxide concentration inside the room based on the acquired absolute humidity.
  • the air conditioning system according to the present disclosure includes an indoor unit of the air conditioning system as described above.
  • the control device is a control device provided in an indoor unit of an air conditioning system, and includes an information acquisition unit that acquires the indoor temperature detected by a temperature sensor and the indoor relative humidity detected by a relative humidity sensor, an operation control unit that controls the operation of the indoor unit based on the acquired temperature and relative humidity, and a monitoring unit that acquires the indoor absolute humidity based on the temperature and relative humidity during heating operation of the indoor unit, and monitors the carbon dioxide concentration in the room based on the acquired absolute humidity.
  • the method of controlling an indoor unit of an air conditioning system includes the steps of acquiring an indoor temperature and a relative humidity in the room, acquiring an absolute humidity in the room based on the temperature and the relative humidity during heating operation of the indoor unit, and monitoring the carbon dioxide concentration in the room based on the acquired absolute humidity.
  • the program disclosed herein causes a control device of an indoor unit of an air conditioning system to execute the steps of acquiring the indoor temperature and the indoor relative humidity, acquiring the indoor absolute humidity based on the temperature and the relative humidity during heating operation of the indoor unit, and monitoring the indoor carbon dioxide concentration based on the acquired absolute humidity.
  • the indoor unit of an air conditioning system, air conditioning system, control device, and control method and program for an indoor unit of an air conditioning system disclosed herein can detect an increase in the carbon dioxide concentration in a room that is caused by the use of another combustion-type heater with a simple configuration.
  • FIG. 1 is a diagram showing a schematic configuration of an air conditioning system according to an embodiment of the present disclosure.
  • 3 is a block diagram showing a functional configuration of an indoor unit of the air conditioning system.
  • FIG. 4 is a flowchart showing the steps of a control method for an indoor unit of an air conditioning system according to an embodiment of the present disclosure.
  • the air conditioning system 1 includes an outdoor unit 2 and an indoor unit 3 .
  • the outdoor unit 2 is installed outside the building.
  • the outdoor unit 2 is connected to the indoor unit 3 via a connection pipe 5.
  • the outdoor unit 2 includes a compressor 21, a condenser (not shown), a fan (not shown), an expansion valve (not shown), a switching valve (not shown), and an outdoor unit control device 25.
  • the compressor 21, condenser, fan, expansion valve, and switching valve are provided on the refrigerant circuit (not shown).
  • the compressor 21 compresses the refrigerant flowing in the refrigerant piping that constitutes the refrigerant circuit.
  • the condenser exchanges heat between the outside air and the refrigerant flowing in the refrigerant piping.
  • the fan sends outside air toward the condenser.
  • the expansion valve expands the refrigerant that has passed through the condenser.
  • the switching valve switches the flow of refrigerant in the refrigerant circuit, switching between cooling and heating operation.
  • the outdoor unit control device 25 controls the operation of the outdoor unit 2.
  • the outdoor unit control device 25 detects the rotation speed of the compressor 21 and transfers the detection result to the control device 40 of the indoor unit 3, which will be described later.
  • the indoor unit 3 is installed inside the building.
  • the indoor unit 3 conditions the air inside the room by performing cooling operation, heating operation, etc.
  • the indoor unit 3 is equipped with an evaporator 33, a temperature sensor 31, a relative humidity sensor 32, and a control device 40.
  • the evaporator 33 of the indoor unit 3 is connected to the outdoor unit 2 via a connecting pipe 5.
  • the connecting pipe forms part of the refrigerant circuit (not shown).
  • the temperature sensor 31 detects the temperature in the room where the indoor unit 3 is installed.
  • the relative humidity sensor 32 detects the relative humidity in the room where the indoor unit 3 is installed.
  • the temperature sensor 31 and the relative humidity sensor 32 output the information (temperature, relative humidity) detected by each to the control device 40.
  • the control device 40 can be configured using a computer such as a microcomputer or a CPU (Central Processing Unit), and hardware such as computer peripheral circuits and devices.
  • the control device 40 is configured by a control board equipped with a microcomputer.
  • the control device 40 has a functional configuration consisting of a combination of hardware and software such as a program executed by the computer, including an information acquisition unit 41, an external input acceptance unit 42, an operation control unit 43, a monitoring unit 44, and an information output unit 45.
  • the information acquisition unit 41 acquires information on the temperature detected by the temperature sensor 31 and the relative humidity detected by the relative humidity sensor 32.
  • the information acquisition unit 41 also acquires information on the rotation speed of the compressor 21 transferred from the outdoor unit control device (not shown) of the outdoor unit 2.
  • the external input receiving unit 42 can receive a selection of multiple operation modes based on user input from an external remote controller or the like.
  • the external input receiving unit 42 receives input of a set temperature based on user input from an external remote controller or the like.
  • the indoor unit 3 can have multiple operation modes such as heating operation and cooling operation selected by the user of the air conditioning system 1 using a remote controller or the like for the indoor unit 3.
  • the indoor unit 3 can select a mode (for example, a fireplace mode) in which another combustion type heating appliance is used during heating operation in the room in which the indoor unit 3 is installed.
  • combustion type heating appliances used indoors include a gas fan heater, a kerosene fan heater, a gas stove, a kerosene stove, a wood stove that uses firewood as fuel, and a pellet stove that uses wood pellets as fuel.
  • the external input receiving unit 42 When the external input receiving unit 42 receives that an operation mode such as heating operation or cooling operation has been selected, it notifies the operation control unit 43 of the selected operation mode. When the external input receiving unit 42 receives that the fireplace mode, in which another combustion-type heating appliance is used during heating operation indoors, has been selected, it notifies the monitoring unit 44 that the fireplace mode has been selected.
  • the operation control unit 43 controls the operation of the indoor unit 3 based on the acquired temperature and relative humidity.
  • the operation control unit 43 controls the indoor unit 3 based on the set temperature and the indoor temperature detected by the temperature sensor 31 so that the indoor temperature approaches the set temperature.
  • the monitoring unit 44 acquires the indoor absolute humidity based on the temperature and relative humidity during heating operation of the indoor unit 3.
  • the indoor absolute humidity can be acquired based on the indoor temperature and the indoor relative humidity, for example, on a publicly known psychrometric chart.
  • the monitoring unit 44 calculates (acquires) the indoor absolute humidity from the indoor temperature detected by the temperature sensor 31 and the indoor relative humidity detected by the relative humidity sensor 32, based on an arithmetic formula set on the basis of a publicly known psychrometric chart, etc.
  • the monitoring unit 44 monitors the carbon dioxide concentration in the room based on the acquired absolute humidity.
  • the monitoring unit 44 determines that the carbon dioxide concentration in the room is increasing when the increase in absolute humidity per unit time is equal to or greater than a preset threshold value. For this reason, the monitoring unit 44 calculates the absolute humidity based on the indoor temperature detected by the temperature sensor 31 and the relative humidity detected by the relative humidity sensor 32 at preset time intervals (e.g., 10 minutes).
  • the monitoring unit 44 determines that the carbon dioxide concentration in the room is increasing based on the difference between the calculated absolute humidity and the absolute humidity calculated immediately before, when the increase in absolute humidity per unit time corresponding to the preset time interval is equal to or greater than a preset threshold value.
  • the monitoring unit 44 monitors the carbon dioxide concentration in the room as described above when a mode in which another combustion type heating appliance is used during heating operation is selected based on a notification from the external input receiving unit 42. This makes it possible to avoid monitoring the carbon dioxide concentration in the room when another combustion type heating appliance is not being used and normal heating or cooling operation is being performed.
  • the monitoring unit 44 monitors the carbon dioxide concentration in the room as described above when the heating load in the indoor unit 3 is low. Therefore, it is preferable that the monitoring unit 44 monitors the carbon dioxide concentration in the room as described above when the difference between the set temperature set externally to the operation control unit 43 and the temperature detected by the temperature sensor 31 is smaller than a preset value. Furthermore, it is preferable that the monitoring unit 44 monitors the carbon dioxide concentration in the room when the rotation speed of the compressor 21 acquired by the information acquisition unit 41 is lower than a preset reference rotation speed.
  • the information output unit 45 outputs information indicating that the carbon dioxide concentration in the room is increasing when it is determined that the carbon dioxide concentration in the room is increasing based on the monitoring result of the monitoring unit 44.
  • the information output by the information output unit 45 is preferably for promoting ventilation in the room.
  • the information output by the information output unit 45 may be, for example, information indicating that the carbon dioxide concentration in the room is high.
  • the information output unit 45 outputs information to the output device 50.
  • the output device 50 is, for example, a remote controller (not shown), a display screen of a display unit provided in the housing of the indoor unit 3, a lamp, etc. The information is notified to the outside, for example, by displaying a message on the display screen, lighting or blinking a lamp, etc.
  • the information may be notified to the outside by outputting an alarm sound or a voice message from the remote controller or the indoor unit 3.
  • the information output unit 45 may transfer the information to be output to an external terminal, for example, a smartphone, tablet terminal, etc. used by the user, and cause the external terminal to output the information.
  • the method for controlling an indoor unit of an air conditioning system includes step S11 of determining whether or not to monitor the indoor carbon dioxide concentration, step S12 of acquiring the indoor temperature and relative humidity, step S13 of acquiring the indoor absolute humidity, step S14 of monitoring the indoor carbon dioxide concentration, and step S15 of outputting information.
  • step S11 which determines whether or not to monitor the carbon dioxide concentration in the room, the monitoring unit 44 estimates whether or not another combustion-type heating appliance is being used in the room during heating operation.
  • the monitoring unit 44 estimates whether or not another combustion-type heating appliance is being used in the room based on the following conditions (A) to (C).
  • This step S11 is executed repeatedly every time a preset time has elapsed.
  • the monitoring unit 44 presumes that another combustion-type heating appliance is being used indoors (step S11; Yes), and proceeds to the process of monitoring the carbon dioxide concentration indoors from step S12 onwards. If all of the conditions (A) to (C) are not met, the monitoring unit 44 presumes that another combustion-type heating appliance is not being used indoors (step S11; No), and repeats step S11 after a preset time has elapsed.
  • step S12 which acquires the indoor temperature and relative humidity
  • the information acquisition unit 41 acquires information on the temperature detected by the temperature sensor 31 and the relative humidity detected by the relative humidity sensor 32.
  • step S13 of acquiring the indoor absolute humidity the monitoring unit 44 acquires the indoor absolute humidity based on the indoor temperature and indoor relative humidity acquired in step S12.
  • the monitoring unit 44 calculates (acquires) the indoor absolute humidity from the indoor temperature detected by the temperature sensor 31 and the indoor relative humidity detected by the relative humidity sensor 32, based on an arithmetic formula set on the basis of a known psychrometric chart or the like.
  • step S14 of monitoring the indoor carbon dioxide concentration the monitoring unit 44 monitors the indoor carbon dioxide concentration based on the absolute humidity acquired in step S13.
  • the monitoring unit 44 calculates the increase in absolute humidity per unit time based on the difference between the absolute humidity calculated in step S13 and the absolute humidity calculated in step S13 immediately before that (during the previous processing).
  • the monitoring unit 44 determines whether the calculated increase in absolute humidity per unit time is equal to or greater than a preset threshold value. When the calculated increase in absolute humidity per unit time is not equal to or greater than the preset threshold value (Step S14; No), the monitoring unit 44 returns to Step S11. If the calculated increase in absolute humidity per unit time is equal to or greater than a preset threshold value (step S11; Yes), the monitoring unit 44 determines that the carbon dioxide concentration in the room is increasing, and proceeds to step S15.
  • step S15 of outputting information when it is determined that the carbon dioxide concentration in the room is increasing based on the monitoring result of the monitoring unit 44 in step S14 (step S11; Yes), information indicating that the carbon dioxide concentration in the room is increasing is output.
  • the information output unit 45 outputs information to the output device 50 to encourage ventilation in the room.
  • the output device 50 receives the information output from the information output unit 45 and notifies the outside of the information for encouraging ventilation in the room, for example, by displaying a message, turning on or blinking a lamp, outputting an alarm sound or a voice message, etc.
  • a user of the air conditioning system 1 recognizes the information notified by the output device 50, he or she can ventilate the room by opening a window, operating a ventilation fan, etc.
  • the absolute humidity in the room is acquired based on the temperature detected by the temperature sensor 31 and the relative humidity detected by the relative humidity sensor 32.
  • a combustion type heating appliance is used in addition to the air conditioning system 1 in the room, moisture is generated together with carbon dioxide as the fuel in the combustion type heating appliance is burned.
  • the combustion type heating appliance is continued to be used, the carbon dioxide concentration in the room increases and the humidity in the room increases. Therefore, when the combustion type heating appliance is used, it is possible to practically monitor the increase in the carbon dioxide concentration in the room by grasping the increase in the absolute humidity acquired based on the temperature and humidity in the room.
  • the information output unit 45 outputs information indicating that the carbon dioxide concentration in the room is increasing. This allows the user in the room to recognize that the carbon dioxide concentration in the room is increasing. This allows the user in the room to ventilate the room by opening a window, operating a ventilation fan, etc.
  • the information output unit 45 outputting information encouraging ventilation in the room, the user in the room can more directly recognize that the carbon dioxide concentration in the room is increasing and that ventilation in the room is necessary.
  • the monitoring unit 44 also determines that the carbon dioxide concentration in the room is increasing if the increase in absolute humidity per unit time is equal to or greater than a preset threshold value. If the increase in absolute humidity per unit time is large, the degree of increase in the carbon dioxide concentration in the room is increasing. In such a case, by determining that the carbon dioxide concentration in the room is increasing, it is possible to ventilate the room at a more appropriate time.
  • the air conditioning system 1, indoor unit 3, and control device 40 monitor the indoor carbon dioxide concentration when the external input receiving unit 42 selects a mode in which another combustion heater is used. For example, when the only increase in humidity in the room is due to a humidifier or cooking, the indoor carbon dioxide concentration may not increase even if the indoor humidity increases. In such cases, the indoor carbon dioxide concentration is not monitored, and the carbon dioxide concentration can be monitored based on the increase in indoor absolute humidity only when it is determined that another combustion heater is being used in the room.
  • the monitoring unit 44 also monitors the carbon dioxide concentration in the room when the difference between the set temperature externally set for the operation control unit 43 and the temperature detected by the temperature sensor 31 is smaller than a preset value. As a result, if the difference between the set temperature and the room temperature is small and the absolute humidity in the room increases, it can be assumed that the increase in carbon dioxide concentration is due to the use of another combustion heater in the room. Therefore, it is possible to effectively monitor the carbon dioxide concentration based on the increase in absolute humidity in the room.
  • the monitoring unit 44 also monitors the carbon dioxide concentration in the room when the acquired rotation speed of the compressor 21 is lower than a preset reference rotation speed. In this way, if the difference between the set temperature and the room temperature is small and the rotation speed of the compressor 21 is low, and the absolute humidity in the room increases, it can be estimated with greater accuracy that another combustion heater is being used in the room. In such cases, it is possible to effectively monitor the carbon dioxide concentration based on the increase in absolute humidity in the room.
  • step S11 when all of the conditions (A) to (C) are satisfied, it is estimated that another combustion type heating appliance is being used indoors, but this is not limited to the above. For example, it is assumed that the user forgets to select the fireplace mode and uses another combustion type heating appliance.
  • step S11 Even if the condition (A) is not satisfied and the conditions (B) and (C) are satisfied, it may be estimated that another combustion type heating appliance is being used indoors (step S11; Yes), and the process of monitoring the carbon dioxide concentration in the room may proceed to step S12 and subsequent steps. If the conditions (B) and (C) are satisfied, the heating load in the indoor unit 3 is small. In this state, if it is confirmed in step S14 that the absolute humidity in the room is rising, it is considered that the carbon dioxide concentration in the room is rising because another combustion type heating appliance is being used indoors.
  • control device 40 which is a computer
  • some or all of the programs executed by the control device 40 can be distributed via a computer-readable recording medium or a communication line.
  • the indoor unit 3 of the air conditioning system 1, the air conditioning system 1, the control device 40, and the control method and program for the indoor unit 3 of the air conditioning system 1 described in the embodiment can be understood, for example, as follows.
  • the indoor unit 3 of the air conditioning system 1 is an indoor unit 3 of an air conditioning system 1, and includes a temperature sensor 31 that detects the temperature inside the room, a relative humidity sensor 32 that detects the relative humidity inside the room, and a control device 40.
  • the control device 40 includes an information acquisition unit 41 that acquires the temperature detected by the temperature sensor 31 and the relative humidity detected by the relative humidity sensor 32, an operation control unit 43 that controls the operation of the indoor unit 3 based on the acquired temperature and relative humidity, and a monitoring unit 44 that acquires the absolute humidity inside the room based on the temperature and the relative humidity during heating operation of the indoor unit 3, and monitors the carbon dioxide concentration inside the room based on the acquired absolute humidity.
  • an operation control unit 43 controls the operation of the indoor unit 3 based on the temperature detected by the temperature sensor 31 and the relative humidity detected by the relative humidity sensor 32 .
  • a combustion-type heating appliance is used indoors in addition to the air conditioning system 1, moisture is generated along with carbon dioxide as the fuel in the heating appliance burns. As a result, if the combustion-type heating appliance is used continuously, the carbon dioxide concentration in the room increases and the humidity in the room also increases.
  • the monitoring unit 44 obtains the absolute humidity in the room based on the temperature detected by the temperature sensor 31 and the relative humidity detected by the relative humidity sensor 32.
  • the monitoring unit 44 can grasp the increase in absolute humidity. Therefore, it is possible to practically monitor the carbon dioxide concentration in the room based on the obtained absolute humidity. This makes it possible to effectively monitor the carbon dioxide concentration in the room without having a carbon dioxide sensor that detects the carbon dioxide concentration. As a result, with a simple configuration, it is possible to detect an increase in the carbon dioxide concentration in the room that accompanies the use of another combustion type heating appliance.
  • the indoor unit 3 of the air conditioning system 1 is the indoor unit 3 of the air conditioning system 1 of (1), and further includes an information output unit 45 that outputs information indicating that the carbon dioxide concentration in the room is increasing when the carbon dioxide concentration in the room is increasing based on the monitoring result of the monitoring unit 44.
  • the information output unit 45 outputs information indicating that the carbon dioxide concentration in the room is increasing, allowing the user in the room to recognize that the carbon dioxide concentration in the room is increasing. This allows the user in the room to ventilate the room by opening a window, operating a ventilation fan, etc.
  • the indoor unit 3 of the air conditioning system 1 according to the third aspect is the indoor unit 3 of the air conditioning system 1 of (1) or (2), and the information is intended to promote ventilation in the room.
  • the information output unit 45 outputs information to encourage ventilation in the room, allowing the user in the room to more directly recognize that ventilation in the room is necessary when the carbon dioxide concentration in the room is high.
  • the indoor unit 3 of the air conditioning system 1 is an indoor unit 3 of any one of the air conditioning systems 1 described in (1) to (3), and the monitoring unit 44 determines that the carbon dioxide concentration in the room is increasing when the increase in the absolute humidity per unit time is equal to or greater than a preset threshold value.
  • the indoor unit 3 of the air conditioning system 1 is an indoor unit 3 of any one of the air conditioning systems 1 of (1) to (4), and further includes an external input receiving unit 42 that allows a selection of multiple operating modes based on an input from the outside, and the monitoring unit 44 monitors the carbon dioxide concentration in the room when a mode in which another combustion heater is used is selected by the external input receiving unit 42.
  • the indoor carbon dioxide concentration is monitored when the external input receiving unit 42 selects a mode in which another combustion heater is used. For example, when the only increase in humidity in the room is due to a humidifier or cooking, the indoor carbon dioxide concentration may not increase even if the humidity in the room increases. In such cases, the indoor carbon dioxide concentration is not monitored, and the carbon dioxide concentration can be monitored based on the increase in absolute humidity in the room only when it is determined that another combustion heater is being used in the room.
  • the indoor unit 3 of the air conditioning system 1 is the indoor unit 3 of any one of the air conditioning systems 1 of (1) to (5), and the monitoring unit 44 monitors the carbon dioxide concentration in the room when the difference between the set temperature set externally to the operation control unit 43 and the temperature detected by the temperature sensor 31 is smaller than a preset value.
  • the indoor unit 3 of the air conditioning system 1 is the indoor unit 3 of the air conditioning system 1 of (6), in which the information acquisition unit 41 acquires the rotation speed of the compressor 21 that compresses the refrigerant in the refrigerant circuit of the air conditioning system 1, and the monitoring unit 44 monitors the carbon dioxide concentration in the room when the acquired rotation speed is lower than a preset reference rotation speed.
  • the air conditioning system 1 includes an indoor unit 3 of any one of the air conditioning systems 1 (1) to (7).
  • This air conditioning system 1 has a simple configuration and can detect an increase in the carbon dioxide concentration in a room that occurs when another combustion-type heater is used.
  • the control device 40 is a control device 40 provided in an indoor unit 3 of an air conditioning system 1, and includes an information acquisition unit 41 that acquires the indoor temperature detected by a temperature sensor 31 and the indoor relative humidity detected by a relative humidity sensor 32, an operation control unit 43 that controls the operation of the indoor unit 3 based on the acquired temperature and relative humidity, and a monitoring unit 44 that acquires the indoor absolute humidity based on the temperature and the relative humidity during heating operation of the indoor unit 3, and monitors the carbon dioxide concentration in the room based on the acquired absolute humidity.
  • This control device 40 has a simple configuration and can detect an increase in the carbon dioxide concentration in the room that occurs when other combustion heaters are used.
  • the method for controlling the indoor unit 3 of the air conditioning system 1 includes step S12 of acquiring the indoor temperature and the indoor relative humidity, step S13 of acquiring the indoor absolute humidity based on the temperature and the relative humidity during heating operation of the indoor unit 3, and step S14 of monitoring the indoor carbon dioxide concentration based on the acquired absolute humidity.
  • This method of controlling the indoor unit 3 of the air conditioning system 1 makes it possible, with a simple configuration, to detect an increase in the carbon dioxide concentration in the room that accompanies the use of another combustion-type heater.
  • the program according to the eleventh aspect causes the control device 40 of the indoor unit 3 of the air conditioning system 1 to execute step S12 of acquiring the indoor temperature and the indoor relative humidity, step S13 of acquiring the indoor absolute humidity based on the temperature and the relative humidity during heating operation of the indoor unit 3, and step S14 of monitoring the indoor carbon dioxide concentration based on the acquired absolute humidity.
  • This program has a simple configuration and can cause the control device 40 of the indoor unit 3 of the air conditioning system 1 to execute a process for detecting an increase in the carbon dioxide concentration in the room that accompanies the use of another combustion-type heater.
  • a simple configuration is used to detect an increase in the carbon dioxide concentration in a room that occurs when another combustion-type heater is used.
  • Reference Signs List 1 For Air conditioning system 2
  • Outdoor unit 3 ForIndoor unit 21
  • Compressor 25 ...Outdoor unit control device 31
  • Temperature sensor 32 ForRelative humidity sensor 33
  • Evaporator 40 Control device 41
  • Information acquisition unit 42 ForExternal input reception unit 43
  • Operation control unit 44 ForMonitoring unit 45
  • Information output unit 50 ...Output device

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  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
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  • Chemical & Material Sciences (AREA)
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Abstract

L'invention concerne une unité intérieure d'un système de climatisation qui comprend un capteur de température qui détecte la température dans une pièce, un capteur d'humidité relative qui détecte l'humidité relative dans la pièce, et un dispositif de commande, le dispositif de commande comprenant : une unité d'acquisition d'informations qui acquiert la température détectée par le capteur de température et l'humidité relative détectée par le capteur d'humidité relative ; une unité de commande de fonctionnement qui commande le fonctionnement de l'unité intérieure sur la base de la température et de l'humidité relative acquises ; et une unité de surveillance qui, pendant une opération de chauffage de l'unité intérieure, acquiert l'humidité absolue dans la pièce sur la base de la température et de l'humidité relative, et surveille la concentration de dioxyde de carbone dans la pièce sur la base de l'humidité absolue acquise.
PCT/JP2023/031967 2022-09-29 2023-08-31 Unité intérieure pour système de climatisation, système de climatisation, dispositif de commande, procédé de commande d'unité intérieure pour système de climatisation et programme WO2024070491A1 (fr)

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JP2022-156111 2022-09-29
JP2022156111A JP2024049712A (ja) 2022-09-29 2022-09-29 空気調和システムの室内機、空気調和システム、制御装置、空気調和システムの室内機の制御方法、プログラム

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JPS591940A (ja) * 1982-06-02 1984-01-07 Hitachi Plant Eng & Constr Co Ltd 絶対湿度差による外気取入量の制御方法
JP2004278916A (ja) * 2003-03-17 2004-10-07 Toho Gas Co Ltd 空調システム
DE102006023182A1 (de) * 2006-05-17 2007-11-22 Siemens Ag Sensoranordnung zur Erfassung von Kennwerten der Umgebung und Verfahren zur Generierung entsprechender Ausgangssignale
WO2020262300A1 (fr) * 2019-06-28 2020-12-30 ダイキン工業株式会社 Unité intérieure de climatiseur et climatiseur
WO2022180931A1 (fr) * 2021-02-24 2022-09-01 三菱重工サーマルシステムズ株式会社 Dispositif de commande de climatiseur, climatiseur, procédé de climatisation et programme de climatisation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591940A (ja) * 1982-06-02 1984-01-07 Hitachi Plant Eng & Constr Co Ltd 絶対湿度差による外気取入量の制御方法
JP2004278916A (ja) * 2003-03-17 2004-10-07 Toho Gas Co Ltd 空調システム
DE102006023182A1 (de) * 2006-05-17 2007-11-22 Siemens Ag Sensoranordnung zur Erfassung von Kennwerten der Umgebung und Verfahren zur Generierung entsprechender Ausgangssignale
WO2020262300A1 (fr) * 2019-06-28 2020-12-30 ダイキン工業株式会社 Unité intérieure de climatiseur et climatiseur
WO2022180931A1 (fr) * 2021-02-24 2022-09-01 三菱重工サーマルシステムズ株式会社 Dispositif de commande de climatiseur, climatiseur, procédé de climatisation et programme de climatisation

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