Air conditioning and ventilation system, control method for air conditioning and ventilation system, control device, and program

Abstract

The present invention provides an air conditioning and ventilation system that can suppress the sudden increase in air conditioning load when the air conditioning system starts up. [Solution] The air conditioning and ventilation system 100 comprises an air conditioning device 3, a ventilation device 2, a room temperature sensor 8 for detecting room temperature TR, and a server device 6 for controlling the air conditioning device 3 and the ventilation device 2. The server device 6 comprises an information acquisition unit 602 for acquiring stop operation information of the indoor unit 1 of the air conditioning device 3, and an airflow control unit 603 for controlling the airflow B of the ventilation device 2. When the stop operation information of the indoor unit 1 acquired by the information acquisition unit 602 indicates that the indoor unit 1 has transitioned from a stopped state to an operating state, the airflow control unit 603 controls the airflow B of the ventilation device 2 to an airflow smaller than a preset value BS. When the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range, the airflow of the ventilation device 2 is gradually increased toward the set value BS.

Description

Technical Field

[0001] The present disclosure relates to an air-conditioning and ventilation system, a control method for the air-conditioning and ventilation system, a control device, and a program.

Background Art

[0002] Patent Document 1 discloses an air conditioner that determines the ventilation air volume during precooling and preheating operations and the normal ventilation mode or heat exchange ventilation mode of a total heat exchanger during air-conditioning operations (during and after precooling and preheating operations) based on the indoor temperature, the outside air temperature, and the set temperature of the air conditioner.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present disclosure provides an air-conditioning and ventilation system, a control method for the air-conditioning and ventilation system, a control device, and a program that can suppress a sudden increase in the air-conditioning load of an air conditioner when the air conditioner transitions from a stopped state to an operating state.

Means for Solving the Problems

[0005] The air conditioning and ventilation system in this disclosure comprises an air conditioning device for air conditioning an indoor space, a ventilation device for ventilating the indoor space, a room temperature sensor for detecting the temperature of the indoor space, and a control device for controlling the air conditioning device and the ventilation device, wherein the control device comprises an information acquisition unit for acquiring stop operation information of the indoor unit of the air conditioning device, and an airflow control unit for controlling the airflow of the ventilation device, wherein when the stop operation information of the indoor unit acquired by the information acquisition unit indicates that the indoor unit has transitioned from a stopped state to an operating state, the airflow control unit controls the airflow of the ventilation device to an airflow smaller than a preset value, and when the room temperature detected by the room temperature sensor falls within a predetermined range, it gradually increases the airflow of the ventilation device toward the preset value.

[0006] Furthermore, the control method for an air conditioning and ventilation system in this disclosure comprises an air conditioning device for air conditioning an indoor space, a ventilation device for ventilating the indoor space, a room temperature sensor for detecting the temperature of the indoor space, and a control device for controlling the air conditioning device and the ventilation device, wherein the control device performs an information acquisition step for acquiring stop operation information of the indoor unit of the air conditioning device, and an airflow control step for controlling the airflow of the ventilation device, and the airflow control step includes a first airflow control step for controlling the airflow of the ventilation device to an airflow smaller than a preset value when the stop operation information of the indoor unit acquired in the information acquisition step indicates that the indoor unit has transitioned from a stopped state to an operating state, and a second airflow control step for gradually increasing the airflow of the ventilation device toward the preset value when the room temperature detected by the room temperature sensor falls within a predetermined range.

[0007] Furthermore, the control device in this disclosure controls an air conditioning system that provides air conditioning for an indoor space where a room temperature sensor for detecting room temperature is located, and a ventilation system that provides ventilation for the indoor space, and comprises an information acquisition unit that acquires stop operation information for the indoor unit of the air conditioning system, and an airflow control unit that controls the airflow of the ventilation system, wherein the airflow control unit controls the airflow of the ventilation system to an airflow smaller than a preset value when the stop operation information for the indoor unit acquired by the information acquisition unit indicates that the indoor unit has transitioned from a stopped state to an operating state, and gradually increases the airflow of the ventilation system toward the preset value when the room temperature detected by the room temperature sensor falls within a predetermined range.

[0008] Furthermore, the program in this disclosure causes a processor in a control device that controls an air conditioning system that provides air conditioning for an indoor space where a room temperature sensor for detecting room temperature is located, and a ventilation system that ventilates the indoor space, to execute an information acquisition step for acquiring stop operation information for the indoor unit of the air conditioning system, and an airflow control step for controlling the airflow of the ventilation system, wherein the airflow control step includes a first airflow control step that controls the airflow of the ventilation system to an airflow smaller than a preset value when the stop operation information for the indoor unit acquired in the information acquisition step indicates that the indoor unit has transitioned from a stopped state to an operating state, and a second airflow control step that gradually increases the airflow of the ventilation system toward the preset value when the room temperature detected by the room temperature sensor falls within a predetermined range. [Effects of the Invention]

[0009] The air conditioning and ventilation system, control method, control device, and program described herein can suppress a sudden increase in the air conditioning load when the air conditioning system transitions from a stopped state to an operating state. [Brief explanation of the drawing]

[0010] [Figure 1] Diagram showing the configuration of the air conditioning and ventilation system in this embodiment. [Figure 2] A diagram showing an example of the mechanical configuration of the ventilation device in this embodiment. [Figure 3] This figure shows the configuration of the indoor unit, ventilation system, and server system in this embodiment. [Figure 4] A flowchart showing an example of the processing performed by the server device in this embodiment. [Modes for carrying out the invention]

[0011] (Knowledge and other information that formed the basis of this disclosure) At the time the inventors conceived of this disclosure, a system was known in which the ventilation system would start operating in conjunction with the air conditioning system. In such a system, the ventilation system would typically start operating at a preset airflow rate. Furthermore, the inventors discovered a problem in which, when a ventilation system operates at a set airflow rate, the air conditioning load on the air conditioning system may increase sharply due to the inflow of outside air caused by the operation of the ventilation system. The subject matter of this disclosure was established in order to solve this problem. Therefore, this disclosure provides an air conditioning and ventilation system, a control method for the air conditioning and ventilation system, a control device, and a program that can suppress a sudden increase in the air conditioning load when the air conditioning system transitions from a stopped state to an operating state.

[0012] The embodiments will be described in detail below with reference to the drawings. However, some unnecessarily detailed explanations may be omitted. For example, detailed explanations of already well-known matters or redundant explanations of substantially identical configurations may be omitted. The attached drawings and the following description are provided to enable those skilled in the art to fully understand this disclosure and are not intended to limit the subject matter described in the claims.

[0013] [1. Structure] [1-1. Configuration of the Air Conditioning and Ventilation System] Figure 1 shows the configuration of the air conditioning and ventilation system 100 in this embodiment. The air-conditioning and ventilation system 100 is a system for air-conditioning and ventilating an air-conditioned and ventilated space S provided inside a building H such as a residence or a facility. The air-conditioning and ventilation system 100 includes an indoor unit 1 and a ventilation device 2. The air-conditioned and ventilated space S is an air-conditioned space air-conditioned by the indoor unit 1 and a ventilated space ventilated by the ventilation device 2. Examples of the air-conditioned and ventilated space S include rooms provided inside the building H.

[0014] In this embodiment, a case where the air-conditioned and ventilated space S is, for example, a space where a business person P conducts business in an office will be described. In other words, a case where a room provided inside the building H is an office where the business person P conducts business will be described. The air-conditioned and ventilated space S corresponds to an example of an "indoor space". The business person P corresponds to an example of a "user".

[0015] The air-conditioning and ventilation system 100 includes an air conditioner 3 having a ventilation function. The air conditioner 3 includes an indoor unit 1 and an outdoor unit 31, and the indoor unit 1 air-conditions the air-conditioned and ventilated space S by a refrigeration cycle constituted by the indoor unit 1 and the outdoor unit 31.

[0016] The indoor unit 1 of this embodiment is exemplified as a ceiling cassette type indoor unit, but the form of the indoor unit 1 may be other forms such as a wall-mounted type or a ceiling-suspended type. The indoor unit 1 communicates with a communication device 5 and communicates with a server device 6 connected to a network NW via the communication device 5. The indoor unit 1 of the present embodiment periodically transmits first log data D1 to the server device 6. Details of the first log data D1 will be described later. The server device 6 corresponds to an example of a "control device".

[0017] The communication device 5 is connected to a network NW constituted by a public switched telephone network, a dedicated line, or other communication circuits, and communicates with the server device 6 via the network NW. The communication device 5 functions as an interface device for connecting each device to the network NW.

[0018] The air conditioning and ventilation system 100 includes a ventilation device 2. Ventilation device 2 is installed in building H. Ventilation device 2 is equipped with a supply fan 2H and an exhaust fan 2J. Ventilation device 2 supplies air to the air-conditioned ventilation space S using the supply fan 2H. Ventilation device 2 exhausts air from the air-conditioned ventilation space S using the exhaust fan 2J. In this embodiment, the ventilation device 2 is exemplified as a ceiling-mounted type. However, the type of ventilation device 2 is not limited to a ceiling-mounted type; for example, it may be installed on the wall of a building H. Furthermore, the ventilation device 2 may be equipped with a filter for capturing dust, fine particles, virus droplets, aerosols, etc. In addition, an exhaust port is provided in the air-conditioned ventilation space S corresponding to the supply air of the ventilation device 2.

[0019] The ventilation device 2 communicates with the communication device 5 and communicates with the server device 6 via the communication device 5. In this embodiment, the ventilation device 2 periodically transmits the second log data D2 to the server device 6. Details of the second log data D2 will be described later. The configuration of ventilation device 2 will be further explained with reference to Figure 2.

[0020] The ventilation device 2 of this embodiment switches the airflow B. The ventilation device 2 of this embodiment can switch the airflow B to weak wind B1, medium wind B2, and strong wind B3. Note that the airflow B of strong wind B3 is greater than that of medium wind B2. Also, the airflow B of medium wind B2 is greater than that of weak wind B1. The ventilation device 2 is controlled by the airflow control unit 603 of the server device 6. The airflow control unit 603 of the server device 6 will be further explained with reference to Figure 3.

[0021] The air conditioning and ventilation system 100 is equipped with an air quality sensor 7. The air quality sensor 7 is a sensor that detects the state of air quality in the air-conditioned ventilation space S. The air quality sensor 7 detects the CO2 concentration CM as the state of air quality. The air quality sensor 7 in this embodiment is a sensor that employs, for example, a non-dispersive infrared absorption method. The air quality sensor 7 communicates with the communication device 5 and communicates with the server device 6 via the communication device 5. The air quality sensor 7 periodically transmits the detected CO2 concentration CM value to the server device 6. CO2 concentration CM corresponds to an example of a "detected value". The air conditioning and ventilation system 100 may also be equipped with multiple air quality sensors 7.

[0022] The air quality sensor 7 in this embodiment periodically transmits the third log data D3 to the server device 6. Details of the third log data D3 will be described later.

[0023] The air conditioning and ventilation system 100 is equipped with a room temperature sensor 8. However, the number of room temperature sensors 8 in the air conditioning and ventilation system 100 is not limited to the number shown in Figure 1 (i.e., 2), but may be 1 or 3 or more. The room temperature sensor 8 detects the temperature of the ventilated space S. In the following description, the temperature of the ventilated space S will be referred to as room temperature TR. The room temperature sensor 8 communicates with the communication device 5 and communicates with the server device 6 via the communication device 5. Although Figure 1 illustrates a case where the room temperature sensor 8 is installed on a stand within the ventilated space S, the installation location of the room temperature sensor 8 is not limited to a stand; for example, it may be installed on the wall of the ventilated space S. The room temperature sensor 8 periodically transmits the fourth log data D4 to the server device 6. Details of the fourth log data D4 will be described later.

[0024] The air conditioning and ventilation system 100 is equipped with an outside temperature sensor 9. The number of outside temperature sensors 9 in the air conditioning and ventilation system 100 may be multiple. The outside temperature sensor 9 detects the temperature of the outside air supplied by the ventilation device 2 to the ventilated space S. In the following description, the temperature of the outside air will be referred to as the outside temperature TQ. The outside temperature sensor 9 communicates with the communication device 5 and communicates with the server device 6 via the communication device 5. Although Figure 1 illustrates a case where the outside temperature sensor 9 is installed outside the building H, the installation location of the outside temperature sensor 9 is not limited to outside the building H, and may be inside the ventilation device 2, for example. The ambient temperature sensor 9 periodically transmits the fifth log data D5 to the server device 6. Details of the fifth log data D5 will be described later.

[0025] The air conditioning and ventilation system 100 includes a power sensor 4. The power sensor 4 detects the power consumption EP of office equipment QS located inside the air-conditioned and ventilated space S. The office equipment QS includes, for example, a personal computer, a photocopier, etc. The power sensor 4 is located, for example, in a switchboard SB. The switchboard SB is located, for example, on the wall surface of the air-conditioned and ventilated space S. The power sensor 4 periodically transmits the sixth log data D6 to the server device 6. Details of the sixth log data D6 will be described later.

[0026] The air conditioning and ventilation system 100 includes a server device 6. Server device 6 is a device that processes information using indoor unit 1 and ventilation device 2 as clients. Server device 6 is connected to the network NW and communicates with indoor unit 1 and ventilation device 2. In each diagram, server device 6 is represented by a single block, but this does not necessarily mean that server device 6 is composed of a single device.

[0027] [1-2. An example of the mechanical configuration of a ventilation system] Next, we will describe an example of the mechanical configuration of the ventilation device 2. Figure 2 shows an example of the mechanical configuration of the ventilation device 2 in this embodiment.

[0028] The ventilation device 2 has a roughly rectangular housing 2A. Inside the housing 2A, there is an air supply passage 2B and an exhaust passage 2C. Air introduced from outside and supplied to the room, which is the air-conditioned ventilation space S, flows through the air supply passage 2B. Air introduced from inside the room and discharged to the outside, the exhaust passage 2C, flows through the exhaust passage 2C. An outside air inlet 2D is provided at the upstream end of the air supply passage 2B. An indoor air inlet 2F is provided at the downstream end of the air supply passage 2B. An indoor air intake port 2G is provided at the upstream end of the exhaust passage 2C. An outdoor air exhaust port 2E is provided at the downstream end of the exhaust passage 2C.

[0029] An air supply fan 2H is positioned in the air supply passage 2B. When the air supply fan 2H operates, outside air is drawn in from the outside air intake 2D, flows through the air supply passage 2B, and is supplied to the room from the indoor air intake 2F. An exhaust fan 2J is positioned in the exhaust passage 2C. When the exhaust fan 2J operates, indoor air is drawn in through the indoor air intake 2G, flows through the exhaust passage 2C, and is discharged outside through the outdoor air exhaust vent 2E.

[0030] A total heat exchanger 2K is placed in the air path in the supply air passage 2B and in the air path in the exhaust air passage 2C. The total heat exchanger 2K in this embodiment is a so-called orthogonal type total heat exchanger 2K, in which the supply air passage 2B and the exhaust air passage 2C are orthogonal to each other. The total heat exchanger 2K is made of a porous substrate containing, for example, a hydrophilic resin or a flame retardant agent, and a rectangular prism-shaped total heat exchanger 2K in which the supply air passage 2B and the exhaust air passage 2C are orthogonal to each other is constructed by alternately stacking rectangular plate-shaped substrates having linear passages while changing their orientation. The total heat exchanger 2K of this embodiment has both heat transfer and moisture permeability, and is configured to enable total heat exchange of sensible heat (temperature) and latent heat (humidity) between the air flowing through the supply air passage 2B and the air flowing through the exhaust air passage 2C.

[0031] In the air supply channel 2B, an air supply side heat exchanger 2L is installed downstream of the total heat exchanger 2K. The air supply side heat exchanger 2L heats, cools, etc., the air flowing through the air supply channel 2B. In the exhaust flow path 2C, an exhaust-side heat exchanger 2M is installed downstream of the total heat exchanger 2K. The exhaust-side heat exchanger 2M heats, cools, etc., the air flowing through the exhaust flow path 2C.

[0032] Each of the supply-side heat exchanger 2L and the exhaust-side heat exchanger 2M is a so-called fin-and-tube type heat exchanger, and has a pipe (not shown) through which the refrigerant flows and a heat absorption / discharge section (not shown) that absorbs and releases heat with air. The supply-side heat exchanger 2L and the exhaust-side heat exchanger 2M are connected in series and connected to the refrigerant circuit outside the housing 2A. Refrigerant flows through the supply-side heat exchanger 2L and the exhaust-side heat exchanger 2M via the refrigerant circuit. In the supply-side heat exchanger 2L and the exhaust-side heat exchanger 2M, heat exchange occurs between the air passing through them and the refrigerant, causing the air to be heated and then cooled.

[0033] The supply air heat exchanger 2L can be switched to either heating, cooling, or neither heating nor cooling. The exhaust air heat exchanger 2M can also be switched to either heating, the opposite of the supply air heat exchanger 2L, or neither heating nor cooling. In the exhaust flow path 2C, an auxiliary heater 2N, such as a heating element, is installed downstream of the exhaust heat exchanger 2M. The auxiliary heater 2N provides supplementary heating to the air that the exhaust heat exchanger 2M is heating when the exhaust heat exchanger 2M heats the air in the exhaust flow path 2C.

[0034] A humidity control unit 2P is positioned downstream of the supply-side heat exchanger 2L and the exhaust-side heat exchanger 2M. The humidity control unit 2P includes a humidity controller 2Q and a humidity controller drive unit 2R, such as an electric motor, which rotates the humidity controller 2Q. The humidity controller 2Q, for example, absorbs moisture at low temperatures and releases moisture at high temperatures. When cold air flows into humidifier 2Q, moisture in the air is adsorbed, and the air is dehumidified. Conversely, when hot air flows into humidifier 2Q, the moisture adsorbed by humidifier 2Q is released into the air, and the air is humidified.

[0035] The humidifier 2Q rotates in a predetermined direction by driving the humidifier drive unit 2R. The rotor-shaped portion of the humidifier 2Q moves continuously between the supply air passage 2B and the exhaust air passage 2C. The humidifier 2Q dehumidifies the air flowing through one of the supply air passages 2B and exhaust air passage 2C while humidifying the air flowing through the other. The humidity control unit 2P humidifies the air flowing through the supply air passage 2B downstream of the total heat exchanger 2K, and the air flowing through the exhaust air passage 2C downstream of the total heat exchanger 2K.

[0036] Inside the housing 2A, a partition member 2S is provided that separates the upper and lower parts of the total heat exchanger 2K. The partition member 2S has the function of separating the supply air passage 2B, which flows through the total heat exchanger 2K and the supply air side heat exchanger 2L, from the exhaust air passage 2C, which flows through the total heat exchanger 2K and the exhaust side heat exchanger 2M.

[0037] Furthermore, a temperature sensor ST1 for detecting the indoor air temperature is provided near the indoor air intake port 2G. A humidity sensor ST2 for detecting the humidity of the air passing through the exhaust flow path 2C is provided near the space between the exhaust heat exchanger 2M and the total heat exchanger 2K.

[0038] The ventilation device 2 shown in Figure 2 will be described in the case where it supplies air to the air-conditioned ventilation space S and exhausts air from the air-conditioned ventilation space S, but it is sufficient if the ventilation device 2 supplies air to the air-conditioned ventilation space S and exhausts air from the air-conditioned ventilation space S. For example, the ventilation device 2 may supply air to the ventilated space S. In this case, the ventilated space S is provided with an exhaust port corresponding to the air supply to the ventilation device 2. Alternatively, for example, the ventilation device 2 may exhaust air from the ventilated space S. In this case, the ventilated space S is provided with an air intake corresponding to the exhaust from the ventilation device 2.

[0039] The ventilation system 2 shown in Figure 2 is described in the case where it is equipped with a total heat exchanger 2K, but the ventilation system 2 does not necessarily have to be equipped with a total heat exchanger 2K. Furthermore, although the ventilation system 2 shown in Figure 2 is described as having a supply-side heat exchanger 2L and an exhaust-side heat exchanger 2M, the ventilation system 2 does not necessarily have to have a supply-side heat exchanger 2L and an exhaust-side heat exchanger 2M. Furthermore, although the ventilation system 2 shown in Figure 2 is described in the case where it is equipped with an auxiliary heater 2N, the ventilation system 2 does not necessarily have to be equipped with an auxiliary heater 2N. Furthermore, although the ventilation system 2 shown in Figure 2 is described as being equipped with a humidifier 2Q, the ventilation system 2 does not necessarily have to be equipped with a humidifier 2Q.

[0040] [1-3. Indoor Unit Configuration] Figure 3 shows the configuration of the indoor unit 1, the ventilation device 2, and the server device 6. The indoor unit 1 comprises an indoor control device 10, a first indoor communication unit 11, a second indoor communication unit 12, an intake temperature detection sensor 13, an indoor blower fan 14, and an indoor expansion valve 15. The temperature sensor ST1 in Figure 2 corresponds to an example of the suction temperature detection sensor 13. The air supply fan 1H in Figure 2 corresponds to an example of the indoor ventilation fan 14.

[0041] The indoor control device 10 is a control device that controls each part of the indoor unit 1. The indoor control device 10 comprises an indoor processor 10B, which is a processor such as a CPU (Central Processing Unit), an indoor memory 10A, and an interface circuit for connecting other devices and sensors, and controls each part of the indoor unit 1.

[0042] The indoor memory 10A is a memory that stores programs and data. The indoor memory 10A stores data to be processed by the control program 104 and the indoor processor 10B. The indoor memory 10A has a non-volatile storage area. Alternatively, the indoor memory 10A may also have a volatile storage area and constitute the work area of ​​the indoor processor 10B. The indoor memory 10A is composed of, for example, ROM (Read Only Memory) or RAM (Random Access Memory).

[0043] The first indoor communication unit 11 is equipped with communication hardware such as communication circuits and communicates with the server device 6 according to the control of the indoor control device 10. The communication standard of the first indoor communication unit 11 may be either a wireless communication standard or a wired communication standard.

[0044] The second indoor communication unit 12 is equipped with communication hardware such as a communication circuit and communicates with the outdoor unit 31 according to the control of the indoor control device 10. The communication standard of the second indoor communication unit 12 is a wired communication standard.

[0045] The intake temperature detection sensor 13 is a sensor that detects the temperature of the air in the ventilated space S that the indoor unit 1 draws in (hereinafter referred to as "intake temperature"). The intake temperature detection sensor 13 is installed, for example, at the intake port of the indoor unit 1. The intake temperature detection sensor 13 periodically outputs the detected intake temperature value to the indoor control device 10.

[0046] The indoor ventilation fan 14 rotates according to the control of the indoor control device 10 and sends air to the heat exchanger provided in the indoor unit 1.

[0047] The indoor expansion valve 15 is a valve that adjusts the refrigerant flow rate to the heat exchanger of the indoor unit 1. The opening degree of the indoor expansion valve 15 is adjusted according to the control of the indoor control device 10.

[0048] The indoor processor 10B functions as the first indoor communication control unit 101, the second indoor communication control unit 102, and the indoor operation control unit 103 by reading and executing the control program 104.

[0049] The first indoor communication control unit 101 communicates with the server device 6 via the first indoor communication unit 11. The first indoor communication control unit 101 transmits the first log data D1 to the server device 6. The first log data D1 describes whether the indoor unit 1 is stopped, in cooling operation, or in heating operation, the set temperature of the indoor unit 1 specified by the user P using a remote control or the like, and the intake temperature detected by the intake temperature detection sensor 13. The set temperature of the indoor unit 1 refers to the target temperature value within the ventilated space S that the indoor unit 1 adjusts. The indoor unit 1 switches between thermo on and thermo off, and adjusts the refrigerant flow rate to the heat exchanger of the indoor unit 1, so that the difference between the set temperature and the intake temperature is small.

[0050] The second indoor communication control unit 102 communicates with the outdoor unit 31 via the second indoor communication unit 12.

[0051] The indoor operation control unit 103 controls the operation of the indoor unit 1 by controlling air conditioning-related mechanisms such as the indoor blower fan 14 and the indoor expansion valve 15.

[0052] [1-4. Configuration of the ventilation system] Next, we will explain the configuration of the ventilation system 2. The ventilation system 2 comprises a ventilation control device 23, a first ventilation communication unit 24, a supply air fan motor 25, and an exhaust fan motor 26.

[0053] The ventilation control device 23 is a control device that controls each part of the ventilation device 2. The ventilation control device 23 includes a ventilation processor 20B, which is a processor such as a CPU, a ventilation memory 20A, and an interface circuit for connecting other devices and sensors, and controls each part of the ventilation device 2.

[0054] The ventilation memory 20A is a memory that stores programs and data. The ventilation memory 20A stores the control program 204 and data to be processed by the ventilation processor 20B. The ventilation memory 20A has a non-volatile storage area. Alternatively, the ventilation memory 20A may also have a volatile storage area and constitute the work area of ​​the ventilation processor 20B. The ventilation memory 20A is composed of, for example, ROM or RAM.

[0055] The first ventilation communication unit 24 is equipped with communication hardware such as a communication circuit and communicates with the server device 6 according to the control of the ventilation control device 23. The communication standard of the first ventilation communication unit 24 may be either a wireless communication standard or a wired communication standard.

[0056] The supply fan motor 25 rotates the supply fan 2H at a predetermined rotational speed according to the control of the ventilation control device 23. The exhaust fan motor 26 rotates the exhaust fan 2J at a predetermined rotational speed according to the control of the ventilation control device 23.

[0057] The ventilation processor 20B functions as a first ventilation communication control unit 201, a second ventilation communication control unit 202, and a ventilation operation control unit 203 by reading and executing the control program 204.

[0058] The first ventilation communication control unit 201 communicates with the server device 6 via the first ventilation communication unit 24. The first ventilation communication control unit 201 transmits the second log data D2 to the server device 6. The second log data D2 describes the current airflow B of the ventilation device 2.

[0059] The ventilation operation control unit 203 controls the operation of the ventilation system 2 according to instructions from the server device 6.

[0060] [1-5. Server Device Configuration] Next, we will describe the configuration of server device 6. The server device 6 includes a server control device 60 and a server communication unit 61. The server control device 60 is a control device that controls each part of the server device 6. The server control device 60 comprises a server processor 60B, which is a processor such as a CPU, a server memory 60A, and an interface circuit for connecting other devices and sensors, and controls each part of the server device 6. Server processor 60B corresponds to an example of a "processor".

[0061] Server memory 60A is memory for storing programs and data. Server memory 60A stores data processed by the control program 607, log DB (Data Base) 608, and server processor 60B. Server memory 60A has a non-volatile storage area. Alternatively, server memory 60A may also have a volatile storage area and constitute the work area of ​​server processor 60B. Server memory 60A is composed of, for example, ROM or RAM. Control program 607 corresponds to an example of a "program".

[0062] Log DB608 is a database that stores log data D in chronological order for a predetermined period from the present to the past. Log DB608 stores log data D by separating it into fields according to the type of log data D. Specifically, Log DB608 stores log data D for each of the following: the first log data D1 transmitted by the indoor unit 1, the second log data D2 transmitted by the ventilation device 2, and the third log data D3 transmitted by the air quality sensor 7. Furthermore, log DB608 stores the fourth log data D4 transmitted by the room temperature sensor 8, the fifth log data D5 transmitted by the outside temperature sensor 9, and the sixth log data D6 transmitted by the power sensor 4.

[0063] The server communication unit 61 is equipped with communication hardware such as a communication circuit and communicates with the indoor unit 1, ventilation device 2, air quality sensor 7, room temperature sensor 8, and outdoor temperature sensor 9 according to the control of the server control device 60. The communication standard of the server communication unit 61 may be either a wireless communication standard or a wired communication standard.

[0064] The server processor 60B functions as the server communication control unit 601, information acquisition unit 602, airflow control unit 603, pre-cooling / heating execution unit 604, occupant management unit 605, and start time estimation unit 606 by reading and executing the control program 607 stored in the server memory 60A.

[0065] The server communication control unit 601 communicates with the indoor unit 1, the ventilation device 2, and the air quality sensor 7 via the server communication unit 61.

[0066] The server communication control unit 601 stores log data D in chronological order in the log DB 608. When the server communication control unit 601 receives first log data D1 from indoor unit 1, it stores the received first log data D1 in the log DB 608. When the server communication control unit 601 receives second log data D2 from ventilation device 2, it stores the received second log data D2 in the log DB 608. When the server communication control unit 601 receives third log data D3 from air quality sensor 7, it stores the received third log data D3 in the log DB 608. When the server communication control unit 601 receives fourth log data D4 from room temperature sensor 8, it stores the received fourth log data D4 in the log DB 608. When the server communication control unit 601 receives fifth log data D5 from outdoor temperature sensor 9, it stores the received fifth log data D5 in the log DB 608. When the server communication control unit 601 receives the sixth log data D6 from the power sensor 4, it stores the received sixth log data D6 in the log DB 608.

[0067] The information acquisition unit 602 acquires stop operation information for the indoor unit 1 of the air conditioning system 3. "Stop operation information" indicates whether the indoor unit 1 is in a stopped state or in an operating state. Furthermore, the information acquisition unit 602 acquires stop / operation information for the ventilation device 2. "Stop / operation information" indicates whether the ventilation device 2 is in a stopped state or in an operating state.

[0068] The airflow control unit 603 controls the airflow B of the ventilation device 2 to an airflow B smaller than the preset value BS when the stop operation information of the indoor unit 1 acquired by the information acquisition unit 602 indicates that the indoor unit 1 has transitioned from a stopped state to an operating state. If the preset value BS corresponds to, for example, a strong wind B3, the airflow control unit 603 controls the airflow B of the ventilation device 2 to a medium wind B2 or a weak wind B1. Also, if the preset value BS corresponds to, for example, a medium wind B2, the airflow control unit 603 controls the airflow B of the ventilation device 2 to a weak wind B1.

[0069] In the following explanation, the airflow rate B of ventilation device 2 refers to the airflow rate supplied by the supply fan 2H of ventilation device 2. In other words, the following explanation describes the case where the airflow rate supplied by the supply fan 2H is airflow rate B, and the exhaust airflow rate supplied by the exhaust fan 2J is "0".

[0070] When the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range, the airflow control unit 603 gradually increases the airflow B of the ventilation device 2 toward a set value BS. When the indoor unit 1 is in operation and the air conditioning system 3 performs cooling operation, the "predetermined range" is, for example, below the set temperature TS. Furthermore, when the indoor unit 1 is in operation and the air conditioning system 3 performs heating operation, the "predetermined range" is, for example, above the set temperature TS.

[0071] "Gradually increasing the airflow B of the ventilation device 2 toward the set value BS" means that, for example, if the set value BS corresponds to a strong wind B3, the airflow B of the ventilation device 2 is increased from a weak wind B1 to a moderate wind B2, and after a predetermined period of time has elapsed, the airflow B of the ventilation device 2 is increased from a moderate wind B2 to a strong wind B3. The predetermined period is, for example, 5 minutes.

[0072] Furthermore, the airflow control unit 603 determines the set value BS for the airflow B of the ventilation device 2 based on the room temperature TR detected by the room temperature sensor 8, the outside temperature TQ detected by the outside temperature sensor 9, and the volume VL of the ventilated space S. The volume information indicating the volume VL is stored in the server memory 60A in advance. Server memory 60A corresponds to an example of an "information storage unit".

[0073] The airflow control unit 603 determines the set value BS of the airflow B of the ventilation device 2, for example, as follows: If we denote the control period of the airflow rate B of ventilation device 2, that is, the period for updating the set value BS of the airflow rate B of ventilation device 2, as ΔT (minutes), then the airflow control unit 603 calculates the room temperature TR(T+ΔT) after a period ΔT has elapsed from time T, based on the airflow rate B of ventilation device 2, using the following equation (1). In other words, room temperature TR(T+ΔT) is the room temperature after a period ΔT has elapsed from time T, when the air conditioning system 3 has stopped operating and ventilation device 2 is performing ventilation operation with airflow rate B. TR(T+ΔT)=(VL×TR(T)+B×ΔT×TQ) / (VL+B×ΔT) (1) The period ΔT is, for example, "5 minutes".

[0074] When the air conditioner 3 performs cooling operation, the airflow control unit 603 calculates the set value of the airflow B BS(m) from the above equation (1) so that, for example, the room temperature TR(T+ΔT) after a period ΔT is higher than the room temperature TR(T) at time T by a predetermined temperature change amount ΔTR. 3 The predetermined temperature change amount ΔTR is determined (per minute). The predetermined temperature change amount ΔTR is, for example, "1°C". Note that the higher the predetermined temperature change amount ΔTR, the greater the load on the air conditioning system 3. When the air conditioner 3 performs heating operation, the airflow control unit 603 calculates the set value of the airflow B BS(m) from the above equation (1) so that, for example, the room temperature TR(T+ΔT) after a period ΔT is lower than the room temperature TR(T) at time T by a predetermined temperature change amount ΔTR. 3 The predetermined temperature change amount ΔTR is determined (per minute). The predetermined temperature change amount ΔTR is, for example, "1°C". Note that the lower the predetermined temperature change amount ΔTR, the greater the load on the air conditioning system 3.

[0075] In this embodiment, the case where the difference between the room temperature TR(T+ΔT) after a period ΔT has elapsed and the room temperature TR(T) at time T is "1°C" has been described. However, the difference between the room temperature TR(T+ΔT) after a period ΔT has elapsed and the room temperature TR(T) at time T may be less than "1°C", or the difference between the room temperature TR(T+ΔT) after a period ΔT has elapsed and the room temperature TR(T) at time T may be greater than "1°C". The smaller the absolute value of the predetermined temperature change ΔTR, the more the air conditioning load of the air conditioning system 3 can be suppressed.

[0076] Alternatively, the airflow control unit 603 may determine the set value BS of the airflow B of the ventilation device 2 based on the power consumption EP detected by the power sensor 4.

[0077] In this case, the airflow control unit 603 determines the set value BS of the airflow B of the ventilation device 2, for example, as follows: The airflow control unit 603 calculates the amount of rise ΔTRA in the room temperature TR of the air-conditioned ventilation space S due to the power consumption EP after the period ΔT has elapsed using the following equation (2). ΔTRA=(EP×ΔT) / (CP×σ×VL) (2) Here, the specific heat of air CP (J / kgK) is the specific heat of the air inside the air-conditioned ventilation space S. Air density σ (kg / m³) 3 ) is the density of the air inside the air-conditioned and ventilated space S.

[0078] The airflow control unit 603 determines the room temperature TR(T+ΔT) after a period ΔT has elapsed from time T, based on the airflow B of the ventilation device 2 and the power consumption EP, using the following equation (3). TR(T+ΔT)=(VL×(TR(T)+ΔTRA)+B×ΔT×TQ) / (VL+B×ΔT) (3) When the air conditioner 3 performs cooling operation, the airflow control unit 603 calculates the set value of the airflow B BS(m) from equation (3) above so that, for example, the room temperature TR(T+ΔT) after a period ΔT is higher than the room temperature TR(T) at time T by a predetermined temperature change amount ΔTR. 3 Determine the temperature change rate ( / min). The predetermined temperature change rate ΔTR is, for example, "1°C". When the air conditioner 3 performs heating operation, the airflow control unit 603 calculates the set value of the airflow B from equation (3) above, such that, for example, the room temperature TR(T+ΔT) after a period ΔT is lower than the room temperature TR(T) at time T by a predetermined temperature change amount ΔTR, so that the set value of the airflow B BS(m 3 Determine the temperature change rate ( / min). The predetermined temperature change rate ΔTR is, for example, "1°C".

[0079] Alternatively, the airflow control unit 603 may determine the set value BS for the airflow B of the ventilation device 2 based on the results of prior learning of the relationship between the change in airflow B of the ventilation device 2 and the change in room temperature TR.

[0080] In this case, for example, a trained model is generated that predicts the change in room temperature TR from the change in airflow B of ventilation device 2, and this trained model is used to determine the set value BS for the airflow B of ventilation device 2.

[0081] The trained model is generated by machine learning, such as deep learning. The input data used to generate the trained model includes the change in airflow B of the ventilation device 2, room temperature TR, outside temperature TQ, and the set temperature TS of the air conditioner 3. The input data may also include power consumption EP, time, and day of the week. The output data used to generate the trained model is the change in room temperature TR. In other words, the trained model is generated by supervised learning. The input and output data used for supervised learning are values ​​from a predetermined period. This predetermined period is, for example, three months. The longer the predetermined period, the better the prediction accuracy of the trained model can be improved.

[0082] The airflow control unit 603 determines the set value BS of the airflow B of the ventilation device 2, for example, as follows: First, the amount of change in the airflow rate B of ventilation device 2, which is input to the trained model, is varied within a predetermined range. Then, the amount of change in the airflow rate B of ventilation device 2 that results in an output change in room temperature TR being less than or equal to a predetermined value (for example, "1°C") is determined. Next, based on the determined amount of change in airflow rate B, the set value BS for the airflow rate B of ventilation device 2 is determined.

[0083] The pre-cooling / heating execution unit 604 causes the air conditioning unit 3 to perform pre-cooling or pre-heating operation before a business person P enters the air-conditioned ventilation space S. "Pre-cooling operation" refers to the operation of the air conditioning system to ensure that the temperature of the air-conditioned and ventilated space S reaches an appropriate temperature before a business person P enters the space during the summer. "Pre-cooling operation" is an example of air conditioning operation. "Preheating operation" refers to a process, for example, in winter, where heating is performed to ensure that the temperature of the air-conditioned and ventilated space S reaches an appropriate temperature before a business person P enters the space. "Preheating operation" is an example of heating operation.

[0084] Based on instructions from the pre-cooling / heating execution unit 604, the airflow control unit 603 controls the airflow B of the ventilation device 2 to an airflow B smaller than a preset value BS after the air conditioning device 3 has started pre-cooling or pre-heating operation. When the air conditioning system 3 starts pre-cooling or pre-heating operation, the stop operation information of the indoor unit 1 acquired by the information acquisition unit 602 indicates that the indoor unit 1 has transitioned from a stopped state to an operating state. In other words, "after the air conditioning system 3 has started pre-cooling or pre-heating operation" corresponds to an example of "when the stop operation information of the indoor unit 1 acquired by the information acquisition unit 602 indicates that the indoor unit 1 has transitioned from a stopped state to an operating state."

[0085] Furthermore, when the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range, the airflow control unit 603 gradually increases the airflow B of the ventilation device 2 toward a set value BS. When the indoor unit 1 is in operation and the air conditioning system 3 performs a pre-cooling operation, the "predetermined range" is, for example, below the set temperature TS. Furthermore, when the indoor unit 1 is in operation and the air conditioning system 3 performs preheating operation, the "predetermined range" is, for example, above the set temperature TS.

[0086] The occupancy management unit 605 manages the schedule of business person P who is present in the air-conditioned and ventilated space S. The schedule of business person P includes occupancy time information indicating the time that business person P is present in the air-conditioned and ventilated space S. The schedule of business person P also includes absence time information indicating the time that business person P is not present in the air-conditioned and ventilated space S.

[0087] The start time estimation unit 606 estimates the time when business person P will begin to be present in the room, based on the business person P's schedule from the occupant management unit 605. The time when business person P begins to be present corresponds, for example, to the start of the time when business person P is present in the air-conditioned ventilation space S. Also, the time when business person P begins to be present corresponds, for example, to the end of the time when business person P is not present in the air-conditioned ventilation space S.

[0088] The pre-cooling / heating execution unit 604 sets the start time of the pre-cooling or pre-heating operation so that it is completed and the gradual increase in the airflow of the ventilation device 2 is completed by the time estimated by the start time estimation unit 606 that business person P is expected to start occupying the air-conditioned ventilation space S. Furthermore, "gradual increase in airflow of ventilation device 2" refers to the operation in which the airflow control unit 603 gradually increases the airflow B of ventilation device 2 toward the set value BS when the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range.

[0089] Furthermore, the airflow control unit 603 may control the airflow B of the ventilation device 2 to a predetermined airflow when the detected value of the air quality sensor 7 exceeds a predetermined value. A predetermined airflow rate corresponds, for example, to the set value BS of airflow rate B. In this case, the airflow control unit 603 determines the set value BS of airflow rate B based on the value detected by the air quality sensor 7. The value detected by the air quality sensor 7 is, for example, the CO2 concentration CM. The airflow control unit 603 sets a stronger airflow rate B as the set value BS of airflow rate B, the higher the CO2 concentration CM.

[0090] [2. Server device processing] Next, referring to Figure 4, the processing of the server control device 60 of the server device 6 will be described. Figure 4 is a flowchart showing an example of processing by the server control device 60 of the server device 6. Furthermore, the flowchart shown in Figure 4 illustrates the case where the pre-cooling / heating execution unit 604 instructs the air conditioning unit 3 to perform pre-cooling or pre-heating operation. Also, the flowchart shown in Figure 4 illustrates the case where the occupant management unit 605 has a pre-existing schedule of business persons P who are present in the air-conditioned ventilation space S.

[0091] First, as shown in Figure 4, in step S101, the start time estimation unit 606 estimates the time when business person P will start being present in the office, based on the schedule information of business person P from the occupancy management unit 605. Next, in step S103, the pre-cooling / pre-heating execution unit 604 sets the start time of the pre-cooling or pre-heating operation so that the pre-cooling or pre-heating operation is completed and the gradual increase in the airflow of the ventilation device 2 is completed by the time when it is estimated that the business person P will begin to be in the room. Next, in step S105, the pre-cooling / heating execution unit 604 determines whether or not the start time for pre-cooling or pre-heating has been reached. If the pre-cooling / pre-heating execution unit 604 determines that the start time for pre-cooling or pre-heating has not been reached (step S105; NO), the process enters a standby state. If the pre-cooling / pre-heating execution unit 604 determines that the start time for pre-cooling or pre-heating has been reached (step S105; YES), the process proceeds to step S107.

[0092] Then, in step S107, the pre-cooling / heating execution unit 604 causes the air conditioning unit 3 to start pre-cooling or pre-heating operation. Next, in step S109, the information acquisition unit 602 acquires stop operation information for the indoor unit 1 of the air conditioning system 3. If the stop operation information indicates that the indoor unit 1 has transitioned from a stopped state to an operating state, the airflow control unit 603 determines the set value BS of the airflow B of the ventilation system 2. The airflow control unit 603 determines the set value BS of the airflow B of the ventilation device 2 based, for example, the room temperature TR detected by the room temperature sensor 8, the outside temperature TQ detected by the outside temperature sensor 9, and the volume VL of the air-conditioned ventilation space S. Next, in step S111, the airflow control unit 603 controls the airflow B of the ventilation device 2 to an airflow B less than the set value BS set in step S109. For example, the set value BS corresponds to a strong wind B3. In this case, the airflow control unit 603 controls the airflow B of the ventilation device 2 to, for example, a weak wind B1.

[0093] Next, in step S113, the airflow control unit 603 determines whether the room temperature TR detected by the room temperature sensor 8 is within a predetermined range. When the air conditioning unit 3 performs pre-cooling operation, the "predetermined range" is, for example, below the set temperature TS. The set temperature TS is, for example, 25°C. Also, when the indoor unit 1 is in operation and the air conditioning unit 3 performs pre-heating operation, the "predetermined range" is, for example, above the set temperature TS. The set temperature TS is, for example, 20°C. If the airflow control unit 603 determines that the room temperature TR is not within a predetermined range (step S113; NO), the process enters a standby state. If the airflow control unit 603 determines that the room temperature TR is within a predetermined range (step S113; YES), the process proceeds to step S115.

[0094] Then, in step S115, the airflow control unit 603 gradually increases the airflow B of the ventilation device 2 toward the set value BS. For example, the airflow control unit 603 increases the airflow B from weak wind B1 to medium wind B2, and after a predetermined period of time has elapsed, increases the airflow B of the ventilation device 2 from medium wind B2 to strong wind B3. Next, in step S117, the airflow control unit 603 determines whether the airflow B of the ventilation device 2 has reached the set value BS. If the airflow control unit 603 determines that the airflow B of the ventilation device 2 has not reached the set value BS (step S117; NO), the process returns to step S115. If the airflow control unit 603 determines that the airflow B of the ventilation device 2 has reached the set value BS (step S117; YES), the process proceeds to step S119.

[0095] Then, in step S119, the server control device 60 determines whether or not the air conditioning unit 3 has stopped operating. Based on the stop operation information acquired by the information acquisition unit 602, the server control device 60 determines whether or not the air conditioning unit 3 has stopped operating. If the server control device 60 determines that the air conditioning unit 3 is not stopped (step S119; NO), the process enters a standby state. If the server control device 60 determines that the air conditioning unit 3 has stopped (step S119; YES), the process proceeds to step S121.

[0096] Then, in step S121, the server control device 60 determines whether or not the ventilation device 2 has stopped operating. Based on the stop operation information acquired by the information acquisition unit 602, the server control device 60 determines whether or not the ventilation device 2 has stopped operating. If the server control device 60 determines that ventilation device 2 is not stopped (step S121; NO), the process enters a standby state. If the server control device 60 determines that ventilation device 2 has stopped operating (step S121; YES), the process then terminates.

[0097] Step S109 corresponds to an example of an "information acquisition step". Steps S111 and S115 correspond to an example of an "airflow control step". Step S111 corresponds to an example of the "first airflow control step". Step S115 corresponds to an example of the "second airflow control step".

[0098] [3. Effects, etc.] As described above, the air conditioning and ventilation system 100 comprises an air conditioning device 3 that provides air conditioning to the ventilated space S, a ventilation device 2 that provides ventilation to the ventilated space S, a room temperature sensor 8 that detects the temperature of the ventilated space S, and a server device 6 that controls the air conditioning device 3 and the ventilation device 2. The server device 6 comprises an information acquisition unit 602 that acquires stop operation information of the indoor unit 1 of the air conditioning device 3, and an airflow control unit 603 that controls the airflow B of the ventilation device 2. When the stop operation information of the indoor unit 1 acquired by the information acquisition unit 602 indicates that the indoor unit 1 has transitioned from a stopped state to an operating state, the airflow control unit 603 controls the airflow B of the ventilation device 2 to an airflow smaller than a preset value BS, and when the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range, it gradually increases the airflow of the ventilation device 2 toward the set value BS.

[0099] With this configuration, when the air conditioning system 3 starts operating, the airflow rate B of the ventilation system 2 is gradually increased, thereby gradually increasing the air conditioning load associated with the inflow of outside air into the room. Therefore, a sudden increase in the air conditioning load of the air conditioning system 3 can be suppressed.

[0100] In the air conditioning and ventilation system 100, the air conditioning and ventilation system 100 is equipped with an outside temperature sensor 9 that detects the outside temperature TQ, the server device 6 is equipped with a server memory 60A that stores volume information indicating the volume of the air-conditioned ventilation space S, and the airflow control unit 603 determines the set value BS of the airflow B of the ventilation device 2 based on the room temperature TR detected by the room temperature sensor 8, the outside temperature TQ detected by the outside temperature sensor 9, and the volume information.

[0101] With this configuration, the set value BS for the airflow B of the ventilation device 2 is determined based on the room temperature TR detected by the room temperature sensor 8, the outside temperature TQ detected by the outside temperature sensor 9, and the volume information, so that the set value BS can be determined to an appropriate value.

[0102] In the air conditioning and ventilation system 100, the air conditioning and ventilation system 100 is equipped with a power sensor 4 that detects the power consumption EP of office equipment QS in the air-conditioned ventilation space S, and the airflow control unit 603 determines the set value BS of the airflow B of the ventilation device 2 based on the power consumption EP detected by the power sensor 4.

[0103] With this configuration, the set value BS for the airflow rate B of the ventilation device 2 is determined based on the power consumption EP of the office equipment QS in the air-conditioned ventilation space S, thus allowing the set value BS to be determined to an appropriate value. In other words, the set value BS can be determined while reflecting the influence of the power consumption EP of the office equipment QS.

[0104] In the air conditioning and ventilation system 100, the airflow control unit 603 determines the set value BS for the airflow B of the ventilation device 2 based on the results of prior learning of the relationship between the change in airflow B of the ventilation device 2 and the change in room temperature TR.

[0105] With this configuration, for example, the change in the airflow rate B of the ventilation device 2 can be determined so that the change in room temperature TR is less than or equal to a predetermined temperature. Therefore, for example, the airflow rate B of the ventilation device 2 can be controlled so that the change in room temperature TR is less than or equal to a predetermined temperature.

[0106] In the air conditioning and ventilation system 100, the server device 6 is equipped with a pre-cooling / pre-heating execution unit 604 that causes the air conditioning unit 3 to perform pre-cooling or pre-heating operation before a business person P enters the air-conditioned ventilation space S. The airflow control unit 603 controls the airflow B of the ventilation unit 2 to a smaller airflow B than the set value BS after the air conditioning unit 3 starts pre-cooling or pre-heating operation based on instructions from the pre-cooling / pre-heating execution unit 604, and gradually increases the airflow B of the ventilation unit 2 toward the set value BS when the room temperature TR acquired by the room temperature sensor 8 falls within a predetermined range.

[0107] With this configuration, when pre-cooling or pre-heating operation is started and the room temperature TR reaches a predetermined range, the airflow B of the ventilation device 2 is gradually increased, thereby gradually increasing the air conditioning load associated with the inflow of outside air into the room. Therefore, a sudden increase in the air conditioning load of the air conditioning device 3 can be suppressed.

[0108] In the air conditioning and ventilation system 100, the server device 6 includes an occupancy management unit 605 that manages the schedules of business persons P who are present in the air-conditioned ventilation space S, and a start time estimation unit 606 that estimates the time when business persons P will begin to be present based on the schedule from the occupancy management unit 605. The pre-cooling and heating execution unit 604 sets the start time of the pre-cooling or pre-heating operation so that the pre-cooling or pre-heating operation is completed and the gradual increase in the airflow rate B of the ventilation device 2 is completed by the time when it is estimated that business persons P will begin to be present.

[0109] With this configuration, the start time of the pre-cooling or pre-heating operation is set so that it is completed and the gradual increase in the airflow B of the ventilation device 2 is completed by the time when business person P is estimated to begin being in the room. Therefore, the start time of the pre-cooling or pre-heating operation can be set to an appropriate time.

[0110] In the air conditioning and ventilation system 100, the air conditioning and ventilation system 100 is equipped with an air quality sensor 7 that detects air pollutants in the air-conditioned ventilation space S, and the airflow control unit 603 controls the airflow B of the ventilation device 2 to a predetermined airflow when the detected value of the air quality sensor 7 exceeds a predetermined value.

[0111] With this configuration, when the detected value of the air quality sensor 7 exceeds a predetermined value, the airflow B of the ventilation device 2 is controlled to a predetermined airflow. By setting each of the predetermined value and the predetermined airflow to appropriate values, the airflow B of the ventilation device 2 can be properly controlled.

[0112] The control method for the air conditioning and ventilation system 100 comprises an air conditioning device 3 that provides air conditioning to an air-conditioned ventilation space S, a ventilation device 2 that provides ventilation to the air-conditioned ventilation space S, a room temperature sensor 8 that detects the temperature of the air-conditioned ventilation space S, and a server device 6 that controls the air conditioning device 3 and the ventilation device 2. The control method for the air conditioning and ventilation system 100 comprises an information acquisition step of acquiring stop operation information of the indoor unit 1 of the air conditioning device 3, and an airflow control step of controlling the airflow B of the ventilation device 2. The airflow control step includes a first airflow control step of controlling the airflow of the ventilation device 2 to an airflow B smaller than a preset set value BS when the stop operation information of the indoor unit 1 acquired in the information acquisition step indicates that the indoor unit 1 has transitioned from a stop state to an operating state, and a second airflow control step of gradually increasing the airflow B of the ventilation device 2 toward the set value BS when the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range.

[0113] This configuration produces the same effects as the air conditioning and ventilation system 100 described above.

[0114] The server device 6 controls an air conditioning system 3 that provides air conditioning to an air-conditioned ventilation space S where a room temperature sensor 8 for detecting room temperature TR is located, and a ventilation system 2 that provides ventilation to the air-conditioned ventilation space S. The server device 6 includes an information acquisition unit 602 that acquires stop operation information of the indoor unit 1 of the air conditioning system 3, and an airflow control unit 603 that controls the airflow B of the ventilation system 2. When the stop operation information of the indoor unit 1 acquired by the information acquisition unit 602 indicates that the indoor unit 1 has transitioned from a stopped state to an operating state, the airflow control unit 603 controls the airflow B of the ventilation system 2 to an airflow smaller than a preset value BS, and when the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range, it gradually increases the airflow of the ventilation system 2 toward the set value BS.

[0115] This configuration produces the same effects as the air conditioning and ventilation system 100 described above.

[0116] The control program 607 causes the server processor 60B of the server device 6, which controls the air conditioning unit 3 that provides air conditioning to the ventilated space S where a room temperature sensor 8 for detecting room temperature TR is located, and the ventilation unit 2 that provides ventilation to the ventilated space S, to execute an information acquisition step to acquire stop operation information of the indoor unit 1 of the air conditioning unit 3, and an airflow control step to control the airflow B of the ventilation unit 2. The airflow control step includes a first airflow control step in which, when the stop operation information of the indoor unit 1 acquired in the information acquisition step indicates that the indoor unit 1 has transitioned from a stopped state to an operating state, the airflow of the ventilation unit 2 is controlled to an airflow B smaller than a preset set value BS, and a second airflow control step in which, when the room temperature TR detected by the room temperature sensor 8 falls within a predetermined range, the airflow B of the ventilation unit 2 is gradually increased toward the set value BS.

[0117] This configuration produces the same effects as the air conditioning and ventilation system 100 described above.

[0118] (Other embodiments) As described above, the above embodiment has been explained as an example disclosed in this application. However, the technology in this disclosure is not limited to this embodiment and can be applied to embodiments that have been modified, replaced, added, or omitted. Furthermore, it is possible to combine the components described in the above embodiment to create new embodiments. Therefore, other embodiments are described below as examples.

[0119] In the embodiment described above, an example was given in which the server device 6 comprises an information acquisition unit 602, an airflow control unit 603, a pre-cooling / heating execution unit 604, an occupant management unit 605, and a start time estimation unit 606. However, a so-called "information processing device" may also comprise an information acquisition unit 602, an airflow control unit 603, a pre-cooling / heating execution unit 604, an occupant management unit 605, and a start time estimation unit 606. The "information processing device" includes personal computers, smartphones, tablet computers, etc.

[0120] In the embodiment described above, the case in which the server device 6 is a "control device" is illustrated. However, the "control device" in this disclosure is not limited to the server device 6, and may be, for example, a so-called "information processing device" that manages each piece of equipment within a building H. The "information processing device" includes personal computers, smartphones, tablet computers, etc. Furthermore, the "information processing device" may be, for example, the indoor control device 10 of the indoor unit 1, or the ventilation control device 23 of the ventilation device 2.

[0121] In the embodiment described above, an example was given in which the air quality sensor 7 detects CO2 concentration CM. However, the air quality sensor 7 of this disclosure only needs to detect air pollutants. The air quality sensor 7 may, for example, detect fine particulate matter such as PM2.5. Alternatively, the air quality sensor 7 may, for example, detect odor substances.

[0122] In the embodiment described above, the ventilation device 2 was shown as having three selectable airflow levels B: "low," "medium," and "high." The ventilation device 2 may have four or more selectable airflow levels B. Furthermore, the ventilation device 2 may be configured to continuously control the airflow level B in a stepless manner.

[0123] The server processor 60B may consist of a single processor or multiple processors. The server processor 60B may also be hardware programmed to implement the corresponding functional units. That is, these processors may consist of, for example, an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

[0124] The configuration of the indoor unit 1, ventilation device 2, and server device 6 shown in Figure 3 is merely an example, and the specific implementation is not particularly limited. In other words, it is not necessarily required that each part be individually equipped with corresponding hardware; it is also possible to configure the system so that a single processor executes a program to realize the functions of each part. Furthermore, some of the functions realized by software in the above-described embodiment may be implemented as hardware, or some of the functions realized by hardware may be implemented as software.

[0125] The operational step units shown in Figure 4 are divided according to the main processing content to facilitate understanding of the operation, and the operation is not limited by the way the processing units are divided or the names of the processing units. Depending on the processing content, it may be further divided into more step units. Alternatively, it may be divided so that one step unit includes even more processing. Furthermore, the order of the steps may be changed as appropriate, as long as it does not hinder the intent of this disclosure.

[0126] Since the embodiments described above are for illustrative purposes only, various modifications, substitutions, additions, omissions, etc., can be made within the claims or their equivalents.

[0127] (Note) Based on the above description of embodiments, the following technologies are disclosed.

[0128] (Technology 1) An air conditioning and ventilation system comprising: an air conditioning device for air conditioning an indoor space; a ventilation device for ventilating the indoor space; a room temperature sensor for detecting the temperature of the indoor space; and a control device for controlling the air conditioning device and the ventilation device, wherein the control device comprises: an information acquisition unit for acquiring stop operation information of the indoor unit of the air conditioning device; and an airflow control unit for controlling the airflow of the ventilation device, wherein the airflow control unit controls the airflow of the ventilation device to an airflow smaller than a preset value when the stop operation information of the indoor unit acquired by the information acquisition unit indicates that the indoor unit has transitioned from a stopped state to an operating state; and gradually increases the airflow of the ventilation device toward the preset value when the room temperature detected by the room temperature sensor falls within a predetermined range. According to this method, when the air conditioning system is started, the airflow rate of the ventilation system is gradually increased, thereby gradually increasing the air conditioning load associated with the inflow of outside air into the room. Therefore, a sudden increase in the air conditioning load of the air conditioning system can be suppressed.

[0129] (Technology 2) The air conditioning and ventilation system according to Technology 1, wherein the air conditioning and ventilation system includes an outside temperature sensor for detecting the temperature outside, the control device includes an information storage unit for storing volume information indicating the volume of the indoor space, and the airflow control unit determines a set value for the airflow of the ventilation device based on the room temperature detected by the room temperature sensor, the outside temperature detected by the outside temperature sensor, and the volume information. According to this, the set value for the ventilation system's airflow is determined based on the room temperature detected by the room temperature sensor, the outside temperature detected by the outside temperature sensor, and volume information, thus enabling the setting value to be determined to an appropriate value.

[0130] (Technology 3) The air conditioning and ventilation system according to Technology 1 or Technology 2, wherein the air conditioning and ventilation system is equipped with a power sensor that detects the power consumption of office equipment in the indoor space, and the airflow control unit determines a set value for the airflow of the ventilation device based on the power consumption detected by the power sensor. According to this method, the set value for the ventilation system's airflow is determined based on the power consumption of office equipment in the indoor space, allowing for the determination of an appropriate set value. In other words, the set value can be determined while reflecting the impact of the power consumption of office equipment.

[0131] (Technology 4) An air conditioning and ventilation system according to any one of Technology 1 to 3, wherein the airflow control unit controls the airflow of the ventilation device based on the results of having previously learned the relationship between the amount of change in the airflow of the ventilation device and the amount of change in the room temperature. According to this, for example, the amount of change in the airflow rate of the ventilation system can be determined so that the change in room temperature is below a predetermined temperature. Therefore, for example, the airflow rate of the ventilation system can be controlled so that the change in room temperature is below a predetermined temperature.

[0132] (Technology 5) An air conditioning and ventilation system according to any one of Technology 1 to Technology 4, wherein the control device includes a pre-cooling / pre-heating execution unit that causes the air conditioning device to perform a pre-cooling or pre-heating operation before a user enters the indoor space, and the airflow control unit controls the airflow of the ventilation device to an airflow smaller than the set value after the air conditioning device has started the pre-cooling or pre-heating operation based on instructions from the pre-cooling / pre-heating execution unit, and when the room temperature acquired by the room temperature sensor falls within a predetermined range, the airflow of the ventilation device is gradually increased toward the set value. According to this method, pre-cooling or pre-heating is initiated, and when the room temperature reaches a predetermined range, the airflow rate of the ventilation system is gradually increased, thereby gradually increasing the air conditioning load associated with the inflow of outside air into the room. Therefore, a sudden increase in the air conditioning load of the air conditioning system can be suppressed.

[0133] (Technical 6) The air conditioning and ventilation system according to Technical 5, wherein the control device comprises an occupancy management unit that manages the schedules of users in the indoor space, and a start time estimation unit that estimates the time when the user will begin to be in the room based on the schedule from the occupancy management unit, and the pre-cooling and heating execution unit sets the start time of the pre-cooling or pre-heating operation so that the pre-cooling or pre-heating operation is completed and the gradual increase in airflow of the ventilation device is completed by the time when the user is estimated to begin to be in the room. According to this, the start time of the pre-cooling or pre-heating operation is set so that it is completed and the gradual increase in the airflow of the ventilation system is completed by the time when the user is estimated to begin occupying the room. Therefore, the start time of the pre-cooling or pre-heating operation can be set to an appropriate time.

[0134] (Technology 7) The air conditioning and ventilation system according to any one of Technology 1 to Technology 6, wherein the air conditioning and ventilation system includes an air quality sensor for detecting air pollutants in the indoor space, and the airflow control unit controls the airflow of the ventilation device to a predetermined airflow when the detected value of the air quality sensor exceeds a predetermined value. According to this, when the detected value of the air quality sensor exceeds a predetermined value, the airflow rate of the ventilation system is controlled to a predetermined airflow rate. By setting both the predetermined value and the predetermined airflow rate to appropriate values, the airflow rate of the ventilation system can be properly controlled.

[0135] (Technical 8) A control method for an air conditioning and ventilation system comprising: an air conditioning device for providing air conditioning to an indoor space; a ventilation device for providing ventilation to the indoor space; a room temperature sensor for detecting the temperature of the indoor space; and a control device for controlling the air conditioning device and the ventilation device, wherein the control device performs an information acquisition step for acquiring stop operation information of the indoor unit of the air conditioning device; and an airflow control step for controlling the airflow of the ventilation device, the airflow control step including: a first airflow control step for controlling the airflow of the ventilation device to an airflow smaller than a preset value when the stop operation information of the indoor unit acquired in the information acquisition step indicates that the indoor unit has transitioned from a stopped state to an operating state; and a second airflow control step for gradually increasing the airflow of the ventilation device toward the preset value when the room temperature detected by the room temperature sensor falls within a predetermined range. According to this, it will produce the same effect as the air conditioning and ventilation system described in Technology 1.

[0136] (Technical 9) A control device for controlling an air conditioning system that provides air conditioning for an indoor space in which a room temperature sensor for detecting room temperature is located, and a ventilation system that provides ventilation for the indoor space, comprising: an information acquisition unit that acquires stop operation information of the indoor unit of the air conditioning system; and an airflow control unit that controls the airflow of the ventilation system, wherein the airflow control unit controls the airflow of the ventilation system to an airflow smaller than a preset value when the stop operation information of the indoor unit acquired by the information acquisition unit indicates that the indoor unit has transitioned from a stopped state to an operating state, and gradually increases the airflow of the ventilation system toward the preset value when the room temperature detected by the room temperature sensor falls within a predetermined range. According to this, it will produce the same effect as the air conditioning and ventilation system described in Technology 1.

[0137] (Technical 10) A program comprising a processor in a control device that controls an air conditioning system that provides air conditioning for an indoor space where a room temperature sensor for detecting room temperature is located, and a ventilation system that ventilates the indoor space, wherein the processor causes the processor to execute an information acquisition step for acquiring stop operation information for the indoor unit of the air conditioning system and an airflow control step for controlling the airflow of the ventilation system, wherein the airflow control step includes a first airflow control step which controls the airflow of the ventilation system to an airflow smaller than a preset value when the stop operation information for the indoor unit acquired in the information acquisition step indicates that the indoor unit has transitioned from a stopped state to an operating state, and a second airflow control step which gradually increases the airflow of the ventilation system toward the preset value when the room temperature detected by the room temperature sensor falls within a predetermined range. According to this, it will produce the same effect as the air conditioning and ventilation system described in Technology 1. [Industrial applicability]

[0138] As described above, the air conditioning and ventilation system, control method, control device, and program related to this disclosure can be used to suppress the sudden increase in air conditioning load when an air conditioning system transitions from a stopped state to an operating state. [Explanation of Symbols]

[0139] 100 Air conditioning and ventilation systems 1 Indoor unit 2. Ventilation system 3. Air conditioning system 4 Power Sensor 6. Server device (control device) 7. Air quality sensor 8. Room temperature sensor 9. Outdoor temperature sensor 60A Server Memory 60B Server Processor (Processor) 601 Server Communication Control Unit 602 Information acquisition department 603 Airflow control unit 604 Pre-cooling and heating execution unit 605 Room Occupant Management Department 606 Start time estimation section 607 Control program (program) S Air-conditioned and ventilated space S109 Step (Information Acquisition Step) S111, S115 Step (Airflow control step) S111 Step (First airflow control step) S115 Step (Second airflow control step) B Air volume ES setting value EP power consumption P Business person (user) TQ outside temperature TR room temperature

Claims

1. An air conditioning system that provides air conditioning for indoor spaces, A ventilation device for ventilating the aforementioned indoor space, A room temperature sensor for detecting the temperature of the indoor space, The air conditioning system and the control device for controlling the ventilation system, An air conditioning and ventilation system equipped with, The control device is An information acquisition unit that acquires stop operation information for the indoor unit of the air conditioning system, The airflow control unit controls the airflow rate of the ventilation device, Equipped with, The airflow control unit, When the information acquisition unit acquires stop operation information for the indoor unit indicating that the indoor unit has transitioned from a stop state to an operating state, the airflow of the ventilation device is controlled to an airflow smaller than a preset value. When the room temperature detected by the room temperature sensor falls within a predetermined range, the airflow of the ventilation device is gradually increased toward the set value. Air conditioning and ventilation system.

2. The aforementioned air conditioning and ventilation system includes an outdoor temperature sensor for detecting the outdoor temperature, The control device includes an information storage unit that stores volume information indicating the volume of the indoor space, The airflow control unit determines the set value of the airflow of the ventilation device based on the room temperature detected by the room temperature sensor, the outside temperature detected by the outside temperature sensor, and the volume information. The air conditioning and ventilation system according to claim 1.

3. The air conditioning and ventilation system includes a power sensor that detects the power consumption of office equipment in the indoor space. The airflow control unit determines the set value of the airflow of the ventilation device based on the power consumption detected by the power sensor. The air conditioning and ventilation system according to claim 2.

4. The airflow control unit controls the airflow of the ventilation device based on the results of prior learning of the relationship between the change in airflow of the ventilation device and the change in room temperature. The air conditioning and ventilation system according to claim 1.

5. The control device includes a pre-cooling / pre-heating execution unit that causes the air conditioning system to perform pre-cooling or pre-heating operation before a user enters the indoor space. The airflow control unit, After the air conditioning system starts the pre-cooling or pre-heating operation based on instructions from the pre-cooling / heating execution unit, the airflow rate of the ventilation system is controlled to a rate smaller than the set value. When the room temperature acquired by the room temperature sensor falls within a predetermined range, the airflow rate of the ventilation device is gradually increased toward the set value. The air conditioning and ventilation system according to claim 1.

6. The control device is A room occupancy management unit manages the schedules of users who are in the aforementioned room space, Based on the schedule from the Occupancy Management Unit, the Start Time Estimation Unit estimates the time when the user will begin to occupy the room, Equipped with, The pre-cooling / heating execution unit sets the start time of the pre-cooling or pre-heating operation so that the pre-cooling or pre-heating operation is completed and the gradual increase in the airflow of the ventilation device is completed by the time it is estimated that the user will begin to be in the room. The air conditioning and ventilation system according to claim 5.

7. The aforementioned air conditioning and ventilation system includes an air quality sensor that detects air pollutants in the indoor space, The airflow control unit controls the airflow of the ventilation device to a predetermined airflow when the detected value of the air quality sensor exceeds a predetermined value. An air conditioning and ventilation system according to any one of claims 1 to 6.

8. An air conditioning system that provides air conditioning for indoor spaces, A ventilation device for ventilating the aforementioned indoor space, A room temperature sensor for detecting the temperature of the indoor space, The air conditioning system and the control device for controlling the ventilation system, A control method for an air conditioning and ventilation system, comprising: The control device, An information acquisition step to acquire stop operation information of the indoor unit of the air conditioning system, A volume control step for controlling the airflow of the ventilation device, Execute, The aforementioned airflow control step is: If the stop operation information of the indoor unit obtained in the information acquisition step indicates that the indoor unit has transitioned from a stopped state to an operating state, a first airflow control step is performed to control the airflow of the ventilation device to an airflow smaller than a preset value. A second airflow control step in which, when the room temperature detected by the room temperature sensor falls within a predetermined range, the airflow of the ventilation device is gradually increased toward the set value, A method for controlling an air conditioning and ventilation system, including the control of an air conditioning and ventilation system.

9. A control device for controlling an air conditioning system that provides air conditioning for an indoor space in which a room temperature sensor for detecting room temperature is installed, and a ventilation system that provides ventilation for the indoor space, An information acquisition unit that acquires stop operation information for the indoor unit of the air conditioning system, The airflow control unit controls the airflow rate of the ventilation device, Equipped with, The airflow control unit, When the information acquisition unit acquires stop operation information for the indoor unit indicating that the indoor unit has transitioned from a stop state to an operating state, the airflow of the ventilation device is controlled to an airflow smaller than a preset value. When the room temperature detected by the room temperature sensor falls within a predetermined range, the airflow of the ventilation device is gradually increased toward the set value. Control device.

10. A processor in a control device that controls an air conditioning system that provides air conditioning for an indoor space where a room temperature sensor is installed to detect the room temperature, and a ventilation system that provides ventilation for the indoor space, An information acquisition step to acquire stop operation information of the indoor unit of the air conditioning system, A volume control step for controlling the airflow of the ventilation device, Make it run, The aforementioned airflow control step is: If the stop operation information of the indoor unit obtained in the information acquisition step indicates that the indoor unit has transitioned from a stopped state to an operating state, a first airflow control step is performed to control the airflow of the ventilation device to an airflow smaller than a preset value. A second airflow control step in which, when the room temperature detected by the room temperature sensor falls within a predetermined range, the airflow of the ventilation device is gradually increased toward the set value, A program that includes this.

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